projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
| 3a71aa26 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
| 794e51c0 | 3 | 2009, 2010, 2011, 2012 Free Software Foundation, Inc. |
| 5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
| 5 | based on elf32-ppc.c by Ian Lance Taylor. | |
| 32ca9640 | 6 | Largely rewritten by Alan Modra. |
| 5bd4f169 | 7 | |
| ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
| 5bd4f169 | 9 | |
| ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by | |
| cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
| ae9a127f | 13 | (at your option) any later version. |
| 5bd4f169 | 14 | |
| ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | GNU General Public License for more details. | |
| 5bd4f169 | 19 | |
| 4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
| 21 | with this program; if not, write to the Free Software Foundation, Inc., | |
| 3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 5bd4f169 | 23 | |
| cd123cb7 | 24 | |
| 4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
| 26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
| 27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
| 5bd4f169 | 28 | |
| 3db64b00 | 29 | #include "sysdep.h" |
| 183e98be | 30 | #include <stdarg.h> |
| 5bd4f169 | 31 | #include "bfd.h" |
| 5bd4f169 AM |
32 | #include "bfdlink.h" |
| 33 | #include "libbfd.h" | |
| 34 | #include "elf-bfd.h" | |
| 04c9666a | 35 | #include "elf/ppc64.h" |
| 5d1634d7 | 36 | #include "elf64-ppc.h" |
| 58d180e8 | 37 | #include "dwarf2.h" |
| 5bd4f169 | 38 | |
| 805fc799 | 39 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
| 4ce794b7 | 40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 2441e016 AM |
41 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
| 42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
| 805fc799 | 43 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
| 4ce794b7 | 44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
| 4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
| 4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
| 4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 51 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
| 4ce794b7 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 53 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
| 4ce794b7 | 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 55 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
| 4ce794b7 | 56 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 2441e016 | 57 | static bfd_vma opd_entry_value |
| aef36ac1 | 58 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
| 5bd4f169 | 59 | |
| ad8e1ba5 AM |
60 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
| 61 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
| 62 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
| 63 | #define TARGET_BIG_NAME "elf64-powerpc" | |
| 64 | #define ELF_ARCH bfd_arch_powerpc | |
| ae95ffa6 | 65 | #define ELF_TARGET_ID PPC64_ELF_DATA |
| ad8e1ba5 AM |
66 | #define ELF_MACHINE_CODE EM_PPC64 |
| 67 | #define ELF_MAXPAGESIZE 0x10000 | |
| 24718e3b | 68 | #define ELF_COMMONPAGESIZE 0x1000 |
| ad8e1ba5 AM |
69 | #define elf_info_to_howto ppc64_elf_info_to_howto |
| 70 | ||
| 71 | #define elf_backend_want_got_sym 0 | |
| 72 | #define elf_backend_want_plt_sym 0 | |
| 73 | #define elf_backend_plt_alignment 3 | |
| 74 | #define elf_backend_plt_not_loaded 1 | |
| ad8e1ba5 | 75 | #define elf_backend_got_header_size 8 |
| ad8e1ba5 AM |
76 | #define elf_backend_can_gc_sections 1 |
| 77 | #define elf_backend_can_refcount 1 | |
| 78 | #define elf_backend_rela_normal 1 | |
| 6bfdb61b | 79 | #define elf_backend_default_execstack 0 |
| ad8e1ba5 | 80 | |
| e717da7e | 81 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
| ad8e1ba5 | 82 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
| aa374f67 | 83 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
| ee67d69a AM |
84 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
| 85 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
| ad8e1ba5 AM |
86 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
| 87 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
| 88 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
| 90e3cdf2 | 89 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
| aa374f67 | 90 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
| ad8e1ba5 AM |
91 | |
| 92 | #define elf_backend_object_p ppc64_elf_object_p | |
| d37c89e5 AM |
93 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
| 94 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
| 183e98be | 95 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
| ad8e1ba5 AM |
96 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
| 97 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
| 555cd476 | 98 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
| 7d9616d7 | 99 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
| e5034e59 | 100 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
| 8387904d | 101 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
| ad8e1ba5 | 102 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
| 74f0fb50 | 103 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
| 64d03ab5 | 104 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
| ad8e1ba5 AM |
105 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
| 106 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
| 107 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
| 108 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
| 9f296da3 | 109 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
| ad8e1ba5 AM |
110 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
| 111 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
| 74541ad4 | 112 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
| 60124e18 | 113 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
| ad8e1ba5 AM |
114 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
| 115 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
| 116 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
| 117 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
| 754021d0 | 118 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
| 29ef7005 | 119 | #define elf_backend_special_sections ppc64_elf_special_sections |
| e054468f | 120 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
| ad8e1ba5 | 121 | |
| 5bd4f169 AM |
122 | /* The name of the dynamic interpreter. This is put in the .interp |
| 123 | section. */ | |
| 124 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
| 125 | ||
| 126 | /* The size in bytes of an entry in the procedure linkage table. */ | |
| 127 | #define PLT_ENTRY_SIZE 24 | |
| 128 | ||
| 129 | /* The initial size of the plt reserved for the dynamic linker. */ | |
| 5d1634d7 | 130 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
| 5bd4f169 AM |
131 | |
| 132 | /* TOC base pointers offset from start of TOC. */ | |
| 411e1bfb AM |
133 | #define TOC_BASE_OFF 0x8000 |
| 134 | ||
| 135 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
| 136 | #define TP_OFFSET 0x7000 | |
| 137 | #define DTP_OFFSET 0x8000 | |
| 5bd4f169 | 138 | |
| ad8e1ba5 AM |
139 | /* .plt call stub instructions. The normal stub is like this, but |
| 140 | sometimes the .plt entry crosses a 64k boundary and we need to | |
| 71a39c98 | 141 | insert an addi to adjust r11. */ |
| ad8e1ba5 | 142 | #define PLT_CALL_STUB_SIZE (7*4) |
| 5d1634d7 | 143 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ |
| 71a39c98 AM |
144 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
| 145 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
| 146 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
| 147 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
| 148 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
| 5d1634d7 AM |
149 | #define BCTR 0x4e800420 /* bctr */ |
| 150 | ||
| 71a39c98 | 151 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
| ad8e1ba5 AM |
152 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
| 153 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
| 154 | ||
| 71a39c98 AM |
155 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
| 156 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
| 157 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
| 794e51c0 AM |
158 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
| 159 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
| 160 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
| 161 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
| 162 | ||
| 71a39c98 | 163 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
| ac2df442 AM |
164 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
| 165 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
| 166 | ||
| ad8e1ba5 AM |
167 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
| 168 | ||
| ee4bf8d2 | 169 | /* glink call stub instructions. We enter with the index in R0. */ |
| ad8e1ba5 | 170 | #define GLINK_CALL_STUB_SIZE (16*4) |
| ee4bf8d2 AM |
171 | /* 0: */ |
| 172 | /* .quad plt0-1f */ | |
| 173 | /* __glink: */ | |
| 174 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
| 175 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
| 176 | /* 1: */ | |
| 177 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
| 71a39c98 | 178 | /* ld %2,(0b-1b)(%11) */ |
| ee4bf8d2 | 179 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
| 71a39c98 AM |
180 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
| 181 | /* ld %12,0(%11) */ | |
| 182 | /* ld %2,8(%11) */ | |
| 183 | /* mtctr %12 */ | |
| 184 | /* ld %11,16(%11) */ | |
| ee4bf8d2 | 185 | /* bctr */ |
| 5d1634d7 AM |
186 | |
| 187 | /* Pad with this. */ | |
| 188 | #define NOP 0x60000000 | |
| 189 | ||
| 721956f4 AM |
190 | /* Some other nops. */ |
| 191 | #define CROR_151515 0x4def7b82 | |
| 192 | #define CROR_313131 0x4ffffb82 | |
| 193 | ||
| cedb70c5 | 194 | /* .glink entries for the first 32k functions are two instructions. */ |
| 5d1634d7 AM |
195 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
| 196 | #define B_DOT 0x48000000 /* b . */ | |
| 197 | ||
| 198 | /* After that, we need two instructions to load the index, followed by | |
| 199 | a branch. */ | |
| 200 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
| 10ed1bba | 201 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
| 41bd81ab | 202 | |
| deb0e272 AM |
203 | /* Instructions used by the save and restore reg functions. */ |
| 204 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
| 205 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
| 206 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
| 207 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
| 82bd7b59 AM |
208 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
| 209 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
| deb0e272 AM |
210 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
| 211 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
| 212 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
| 213 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 82bd7b59 AM |
214 | #define BLR 0x4e800020 /* blr */ |
| 215 | ||
| 41bd81ab AM |
216 | /* Since .opd is an array of descriptors and each entry will end up |
| 217 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
| 218 | propagate .opd relocs; The dynamic linker should be taught to | |
| 1e2f5b6e | 219 | relocate .opd without reloc entries. */ |
| 41bd81ab AM |
220 | #ifndef NO_OPD_RELOCS |
| 221 | #define NO_OPD_RELOCS 0 | |
| 222 | #endif | |
| 5bd4f169 | 223 | \f |
| f5e87a1d | 224 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
| b34976b6 | 225 | |
| 5bd4f169 | 226 | /* Relocation HOWTO's. */ |
| 04c9666a | 227 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
| 5bd4f169 AM |
228 | |
| 229 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
| 230 | /* This reloc does nothing. */ | |
| 231 | HOWTO (R_PPC64_NONE, /* type */ | |
| 232 | 0, /* rightshift */ | |
| 411e1bfb AM |
233 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 234 | 32, /* bitsize */ | |
| b34976b6 | 235 | FALSE, /* pc_relative */ |
| 5bd4f169 | 236 | 0, /* bitpos */ |
| f5e87a1d | 237 | complain_overflow_dont, /* complain_on_overflow */ |
| 5bd4f169 AM |
238 | bfd_elf_generic_reloc, /* special_function */ |
| 239 | "R_PPC64_NONE", /* name */ | |
| b34976b6 | 240 | FALSE, /* partial_inplace */ |
| d006db6c | 241 | 0, /* src_mask */ |
| 5bd4f169 | 242 | 0, /* dst_mask */ |
| b34976b6 | 243 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
244 | |
| 245 | /* A standard 32 bit relocation. */ | |
| 246 | HOWTO (R_PPC64_ADDR32, /* type */ | |
| 247 | 0, /* rightshift */ | |
| 248 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 249 | 32, /* bitsize */ | |
| b34976b6 | 250 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
251 | 0, /* bitpos */ |
| 252 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 253 | bfd_elf_generic_reloc, /* special_function */ | |
| 254 | "R_PPC64_ADDR32", /* name */ | |
| b34976b6 | 255 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
256 | 0, /* src_mask */ |
| 257 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 258 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
259 | |
| 260 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
| 261 | FIXME: we don't check that, we just clear them. */ | |
| 262 | HOWTO (R_PPC64_ADDR24, /* type */ | |
| 263 | 0, /* rightshift */ | |
| 264 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 265 | 26, /* bitsize */ | |
| b34976b6 | 266 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
267 | 0, /* bitpos */ |
| 268 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 269 | bfd_elf_generic_reloc, /* special_function */ | |
| 270 | "R_PPC64_ADDR24", /* name */ | |
| b34976b6 | 271 | FALSE, /* partial_inplace */ |
| d006db6c | 272 | 0, /* src_mask */ |
| f5e87a1d | 273 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 274 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
275 | |
| 276 | /* A standard 16 bit relocation. */ | |
| 277 | HOWTO (R_PPC64_ADDR16, /* type */ | |
| 278 | 0, /* rightshift */ | |
| 279 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 280 | 16, /* bitsize */ | |
| b34976b6 | 281 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
282 | 0, /* bitpos */ |
| 283 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 284 | bfd_elf_generic_reloc, /* special_function */ | |
| 285 | "R_PPC64_ADDR16", /* name */ | |
| b34976b6 | 286 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
287 | 0, /* src_mask */ |
| 288 | 0xffff, /* dst_mask */ | |
| b34976b6 | 289 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
290 | |
| 291 | /* A 16 bit relocation without overflow. */ | |
| 292 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
| 293 | 0, /* rightshift */ | |
| 294 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 295 | 16, /* bitsize */ | |
| b34976b6 | 296 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
297 | 0, /* bitpos */ |
| 298 | complain_overflow_dont,/* complain_on_overflow */ | |
| 299 | bfd_elf_generic_reloc, /* special_function */ | |
| 300 | "R_PPC64_ADDR16_LO", /* name */ | |
| b34976b6 | 301 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
302 | 0, /* src_mask */ |
| 303 | 0xffff, /* dst_mask */ | |
| b34976b6 | 304 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
305 | |
| 306 | /* Bits 16-31 of an address. */ | |
| 307 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
| 308 | 16, /* rightshift */ | |
| 309 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 310 | 16, /* bitsize */ | |
| b34976b6 | 311 | FALSE, /* pc_relative */ |
| 5bd4f169 | 312 | 0, /* bitpos */ |
| f9c6b907 | 313 | complain_overflow_signed, /* complain_on_overflow */ |
| 5bd4f169 AM |
314 | bfd_elf_generic_reloc, /* special_function */ |
| 315 | "R_PPC64_ADDR16_HI", /* name */ | |
| b34976b6 | 316 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
317 | 0, /* src_mask */ |
| 318 | 0xffff, /* dst_mask */ | |
| b34976b6 | 319 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
320 | |
| 321 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
| 322 | bits, treated as a signed number, is negative. */ | |
| 323 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
| 324 | 16, /* rightshift */ | |
| 325 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 326 | 16, /* bitsize */ | |
| b34976b6 | 327 | FALSE, /* pc_relative */ |
| 5bd4f169 | 328 | 0, /* bitpos */ |
| f9c6b907 | 329 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 330 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 331 | "R_PPC64_ADDR16_HA", /* name */ |
| b34976b6 | 332 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
333 | 0, /* src_mask */ |
| 334 | 0xffff, /* dst_mask */ | |
| b34976b6 | 335 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
336 | |
| 337 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
| 338 | FIXME: we don't check that, we just clear them. */ | |
| 339 | HOWTO (R_PPC64_ADDR14, /* type */ | |
| 340 | 0, /* rightshift */ | |
| 341 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 342 | 16, /* bitsize */ | |
| b34976b6 | 343 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
344 | 0, /* bitpos */ |
| 345 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2441e016 | 346 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 347 | "R_PPC64_ADDR14", /* name */ |
| b34976b6 | 348 | FALSE, /* partial_inplace */ |
| d006db6c | 349 | 0, /* src_mask */ |
| f5e87a1d | 350 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 351 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
352 | |
| 353 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 354 | indicate that the branch is expected to be taken. The lower two | |
| 355 | bits must be zero. */ | |
| 356 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
| 357 | 0, /* rightshift */ | |
| 358 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 359 | 16, /* bitsize */ | |
| b34976b6 | 360 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
361 | 0, /* bitpos */ |
| 362 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 363 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 364 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
| b34976b6 | 365 | FALSE, /* partial_inplace */ |
| d006db6c | 366 | 0, /* src_mask */ |
| f5e87a1d | 367 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 368 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
369 | |
| 370 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 371 | indicate that the branch is not expected to be taken. The lower | |
| 372 | two bits must be zero. */ | |
| 373 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
| 374 | 0, /* rightshift */ | |
| 375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 376 | 16, /* bitsize */ | |
| b34976b6 | 377 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
378 | 0, /* bitpos */ |
| 379 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 380 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 381 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
| b34976b6 | 382 | FALSE, /* partial_inplace */ |
| d006db6c | 383 | 0, /* src_mask */ |
| f5e87a1d | 384 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 385 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
386 | |
| 387 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
| 388 | HOWTO (R_PPC64_REL24, /* type */ | |
| 389 | 0, /* rightshift */ | |
| 390 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 391 | 26, /* bitsize */ | |
| b34976b6 | 392 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
393 | 0, /* bitpos */ |
| 394 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 395 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 396 | "R_PPC64_REL24", /* name */ |
| b34976b6 | 397 | FALSE, /* partial_inplace */ |
| d006db6c | 398 | 0, /* src_mask */ |
| f5e87a1d | 399 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 400 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
401 | |
| 402 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
| 403 | HOWTO (R_PPC64_REL14, /* type */ | |
| 404 | 0, /* rightshift */ | |
| 405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 406 | 16, /* bitsize */ | |
| b34976b6 | 407 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
408 | 0, /* bitpos */ |
| 409 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 410 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 411 | "R_PPC64_REL14", /* name */ |
| b34976b6 | 412 | FALSE, /* partial_inplace */ |
| d006db6c | 413 | 0, /* src_mask */ |
| f5e87a1d | 414 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 415 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
416 | |
| 417 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 418 | the branch is expected to be taken. The lower two bits must be | |
| 419 | zero. */ | |
| 420 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
| 421 | 0, /* rightshift */ | |
| 422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 423 | 16, /* bitsize */ | |
| b34976b6 | 424 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
425 | 0, /* bitpos */ |
| 426 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 427 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 428 | "R_PPC64_REL14_BRTAKEN", /* name */ |
| b34976b6 | 429 | FALSE, /* partial_inplace */ |
| d006db6c | 430 | 0, /* src_mask */ |
| f5e87a1d | 431 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 432 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
433 | |
| 434 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 435 | the branch is not expected to be taken. The lower two bits must | |
| 436 | be zero. */ | |
| 437 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
| 438 | 0, /* rightshift */ | |
| 439 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 440 | 16, /* bitsize */ | |
| b34976b6 | 441 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
442 | 0, /* bitpos */ |
| 443 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 444 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 445 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
| b34976b6 | 446 | FALSE, /* partial_inplace */ |
| d006db6c | 447 | 0, /* src_mask */ |
| f5e87a1d | 448 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 449 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
450 | |
| 451 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
| 452 | symbol. */ | |
| 453 | HOWTO (R_PPC64_GOT16, /* type */ | |
| 454 | 0, /* rightshift */ | |
| 455 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 456 | 16, /* bitsize */ | |
| b34976b6 | 457 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
458 | 0, /* bitpos */ |
| 459 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 460 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 461 | "R_PPC64_GOT16", /* name */ |
| b34976b6 | 462 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
463 | 0, /* src_mask */ |
| 464 | 0xffff, /* dst_mask */ | |
| b34976b6 | 465 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
466 | |
| 467 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
| 468 | the symbol. */ | |
| 469 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
| 470 | 0, /* rightshift */ | |
| 471 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 472 | 16, /* bitsize */ | |
| b34976b6 | 473 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
474 | 0, /* bitpos */ |
| 475 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 476 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 477 | "R_PPC64_GOT16_LO", /* name */ |
| b34976b6 | 478 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
479 | 0, /* src_mask */ |
| 480 | 0xffff, /* dst_mask */ | |
| b34976b6 | 481 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
482 | |
| 483 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
| 484 | the symbol. */ | |
| 485 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
| 486 | 16, /* rightshift */ | |
| 487 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 488 | 16, /* bitsize */ | |
| b34976b6 | 489 | FALSE, /* pc_relative */ |
| 5bd4f169 | 490 | 0, /* bitpos */ |
| f9c6b907 | 491 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 492 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 493 | "R_PPC64_GOT16_HI", /* name */ |
| b34976b6 | 494 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
495 | 0, /* src_mask */ |
| 496 | 0xffff, /* dst_mask */ | |
| b34976b6 | 497 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
498 | |
| 499 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
| 500 | the symbol. */ | |
| 501 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
| 502 | 16, /* rightshift */ | |
| 503 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 504 | 16, /* bitsize */ | |
| b34976b6 | 505 | FALSE, /* pc_relative */ |
| 5bd4f169 | 506 | 0, /* bitpos */ |
| f9c6b907 | 507 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 508 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 509 | "R_PPC64_GOT16_HA", /* name */ |
| b34976b6 | 510 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
511 | 0, /* src_mask */ |
| 512 | 0xffff, /* dst_mask */ | |
| b34976b6 | 513 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
514 | |
| 515 | /* This is used only by the dynamic linker. The symbol should exist | |
| 516 | both in the object being run and in some shared library. The | |
| 517 | dynamic linker copies the data addressed by the symbol from the | |
| 518 | shared library into the object, because the object being | |
| 519 | run has to have the data at some particular address. */ | |
| 520 | HOWTO (R_PPC64_COPY, /* type */ | |
| 521 | 0, /* rightshift */ | |
| f5e87a1d AM |
522 | 0, /* this one is variable size */ |
| 523 | 0, /* bitsize */ | |
| b34976b6 | 524 | FALSE, /* pc_relative */ |
| 5bd4f169 | 525 | 0, /* bitpos */ |
| f5e87a1d AM |
526 | complain_overflow_dont, /* complain_on_overflow */ |
| 527 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 5bd4f169 | 528 | "R_PPC64_COPY", /* name */ |
| b34976b6 | 529 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
530 | 0, /* src_mask */ |
| 531 | 0, /* dst_mask */ | |
| b34976b6 | 532 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
533 | |
| 534 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
| 535 | entries. */ | |
| 536 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
| 537 | 0, /* rightshift */ | |
| 538 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 539 | 64, /* bitsize */ | |
| b34976b6 | 540 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
541 | 0, /* bitpos */ |
| 542 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 543 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 544 | "R_PPC64_GLOB_DAT", /* name */ |
| b34976b6 | 545 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 546 | 0, /* src_mask */ |
| f5e87a1d | 547 | ONES (64), /* dst_mask */ |
| b34976b6 | 548 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
549 | |
| 550 | /* Created by the link editor. Marks a procedure linkage table | |
| 551 | entry for a symbol. */ | |
| 552 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
| 553 | 0, /* rightshift */ | |
| 554 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 555 | 0, /* bitsize */ | |
| b34976b6 | 556 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
557 | 0, /* bitpos */ |
| 558 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 559 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 560 | "R_PPC64_JMP_SLOT", /* name */ |
| b34976b6 | 561 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
562 | 0, /* src_mask */ |
| 563 | 0, /* dst_mask */ | |
| b34976b6 | 564 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
565 | |
| 566 | /* Used only by the dynamic linker. When the object is run, this | |
| 567 | doubleword64 is set to the load address of the object, plus the | |
| 568 | addend. */ | |
| 569 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
| 570 | 0, /* rightshift */ | |
| 571 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 572 | 64, /* bitsize */ | |
| b34976b6 | 573 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
574 | 0, /* bitpos */ |
| 575 | complain_overflow_dont, /* complain_on_overflow */ | |
| 576 | bfd_elf_generic_reloc, /* special_function */ | |
| 577 | "R_PPC64_RELATIVE", /* name */ | |
| b34976b6 | 578 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 579 | 0, /* src_mask */ |
| f5e87a1d | 580 | ONES (64), /* dst_mask */ |
| b34976b6 | 581 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
582 | |
| 583 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
| 584 | HOWTO (R_PPC64_UADDR32, /* type */ | |
| 585 | 0, /* rightshift */ | |
| 586 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 587 | 32, /* bitsize */ | |
| b34976b6 | 588 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
589 | 0, /* bitpos */ |
| 590 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 591 | bfd_elf_generic_reloc, /* special_function */ | |
| 592 | "R_PPC64_UADDR32", /* name */ | |
| b34976b6 | 593 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
594 | 0, /* src_mask */ |
| 595 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 596 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
597 | |
| 598 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
| 599 | HOWTO (R_PPC64_UADDR16, /* type */ | |
| 600 | 0, /* rightshift */ | |
| 601 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 602 | 16, /* bitsize */ | |
| b34976b6 | 603 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
604 | 0, /* bitpos */ |
| 605 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 606 | bfd_elf_generic_reloc, /* special_function */ | |
| 607 | "R_PPC64_UADDR16", /* name */ | |
| b34976b6 | 608 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
609 | 0, /* src_mask */ |
| 610 | 0xffff, /* dst_mask */ | |
| b34976b6 | 611 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
612 | |
| 613 | /* 32-bit PC relative. */ | |
| 614 | HOWTO (R_PPC64_REL32, /* type */ | |
| 615 | 0, /* rightshift */ | |
| 616 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 617 | 32, /* bitsize */ | |
| b34976b6 | 618 | TRUE, /* pc_relative */ |
| 5bd4f169 | 619 | 0, /* bitpos */ |
| cedb70c5 | 620 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
| 5bd4f169 AM |
621 | complain_overflow_signed, /* complain_on_overflow */ |
| 622 | bfd_elf_generic_reloc, /* special_function */ | |
| 623 | "R_PPC64_REL32", /* name */ | |
| b34976b6 | 624 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
625 | 0, /* src_mask */ |
| 626 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 627 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 628 | |
| 10ed1bba | 629 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
630 | HOWTO (R_PPC64_PLT32, /* type */ |
| 631 | 0, /* rightshift */ | |
| 632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 633 | 32, /* bitsize */ | |
| b34976b6 | 634 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
635 | 0, /* bitpos */ |
| 636 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 637 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 638 | "R_PPC64_PLT32", /* name */ |
| b34976b6 | 639 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 640 | 0, /* src_mask */ |
| f5e87a1d | 641 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 642 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
643 | |
| 644 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
| 645 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
| 646 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
| 647 | 0, /* rightshift */ | |
| 648 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 649 | 32, /* bitsize */ | |
| b34976b6 | 650 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
651 | 0, /* bitpos */ |
| 652 | complain_overflow_signed, /* complain_on_overflow */ | |
| 653 | bfd_elf_generic_reloc, /* special_function */ | |
| 654 | "R_PPC64_PLTREL32", /* name */ | |
| b34976b6 | 655 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 656 | 0, /* src_mask */ |
| f5e87a1d | 657 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 658 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
659 | |
| 660 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
| 661 | the symbol. */ | |
| 662 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
| 663 | 0, /* rightshift */ | |
| 664 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 665 | 16, /* bitsize */ | |
| b34976b6 | 666 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
667 | 0, /* bitpos */ |
| 668 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 669 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 670 | "R_PPC64_PLT16_LO", /* name */ |
| b34976b6 | 671 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
672 | 0, /* src_mask */ |
| 673 | 0xffff, /* dst_mask */ | |
| b34976b6 | 674 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
675 | |
| 676 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
| 677 | the symbol. */ | |
| 678 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
| 679 | 16, /* rightshift */ | |
| 680 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 681 | 16, /* bitsize */ | |
| b34976b6 | 682 | FALSE, /* pc_relative */ |
| 5bd4f169 | 683 | 0, /* bitpos */ |
| f9c6b907 | 684 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 685 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 686 | "R_PPC64_PLT16_HI", /* name */ |
| b34976b6 | 687 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
688 | 0, /* src_mask */ |
| 689 | 0xffff, /* dst_mask */ | |
| b34976b6 | 690 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
691 | |
| 692 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
| 693 | the symbol. */ | |
| 694 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
| 695 | 16, /* rightshift */ | |
| 696 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 697 | 16, /* bitsize */ | |
| b34976b6 | 698 | FALSE, /* pc_relative */ |
| 5bd4f169 | 699 | 0, /* bitpos */ |
| f9c6b907 | 700 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 701 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 702 | "R_PPC64_PLT16_HA", /* name */ |
| b34976b6 | 703 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
704 | 0, /* src_mask */ |
| 705 | 0xffff, /* dst_mask */ | |
| b34976b6 | 706 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 707 | |
| c061c2d8 | 708 | /* 16-bit section relative relocation. */ |
| 5bd4f169 AM |
709 | HOWTO (R_PPC64_SECTOFF, /* type */ |
| 710 | 0, /* rightshift */ | |
| c061c2d8 AM |
711 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 712 | 16, /* bitsize */ | |
| b34976b6 | 713 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
714 | 0, /* bitpos */ |
| 715 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 716 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 717 | "R_PPC64_SECTOFF", /* name */ |
| b34976b6 | 718 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 719 | 0, /* src_mask */ |
| c061c2d8 | 720 | 0xffff, /* dst_mask */ |
| b34976b6 | 721 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 722 | |
| c061c2d8 | 723 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
| 5bd4f169 AM |
724 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
| 725 | 0, /* rightshift */ | |
| 726 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 727 | 16, /* bitsize */ | |
| b34976b6 | 728 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
729 | 0, /* bitpos */ |
| 730 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 731 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 732 | "R_PPC64_SECTOFF_LO", /* name */ |
| b34976b6 | 733 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
734 | 0, /* src_mask */ |
| 735 | 0xffff, /* dst_mask */ | |
| b34976b6 | 736 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
737 | |
| 738 | /* 16-bit upper half section relative relocation. */ | |
| 739 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
| 740 | 16, /* rightshift */ | |
| 741 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 742 | 16, /* bitsize */ | |
| b34976b6 | 743 | FALSE, /* pc_relative */ |
| 5bd4f169 | 744 | 0, /* bitpos */ |
| f9c6b907 | 745 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 746 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 747 | "R_PPC64_SECTOFF_HI", /* name */ |
| b34976b6 | 748 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
749 | 0, /* src_mask */ |
| 750 | 0xffff, /* dst_mask */ | |
| b34976b6 | 751 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
752 | |
| 753 | /* 16-bit upper half adjusted section relative relocation. */ | |
| 754 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
| 755 | 16, /* rightshift */ | |
| 756 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 757 | 16, /* bitsize */ | |
| b34976b6 | 758 | FALSE, /* pc_relative */ |
| 5bd4f169 | 759 | 0, /* bitpos */ |
| f9c6b907 | 760 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 761 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
| 5bd4f169 | 762 | "R_PPC64_SECTOFF_HA", /* name */ |
| b34976b6 | 763 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
764 | 0, /* src_mask */ |
| 765 | 0xffff, /* dst_mask */ | |
| b34976b6 | 766 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 767 | |
| 04c9666a AM |
768 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
| 769 | HOWTO (R_PPC64_REL30, /* type */ | |
| 5bd4f169 AM |
770 | 2, /* rightshift */ |
| 771 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 772 | 30, /* bitsize */ | |
| b34976b6 | 773 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
774 | 0, /* bitpos */ |
| 775 | complain_overflow_dont, /* complain_on_overflow */ | |
| 776 | bfd_elf_generic_reloc, /* special_function */ | |
| 04c9666a | 777 | "R_PPC64_REL30", /* name */ |
| b34976b6 | 778 | FALSE, /* partial_inplace */ |
| d006db6c | 779 | 0, /* src_mask */ |
| 5bd4f169 | 780 | 0xfffffffc, /* dst_mask */ |
| b34976b6 | 781 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
782 | |
| 783 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
| 784 | ||
| 785 | /* A standard 64-bit relocation. */ | |
| 786 | HOWTO (R_PPC64_ADDR64, /* type */ | |
| 787 | 0, /* rightshift */ | |
| 788 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 789 | 64, /* bitsize */ | |
| b34976b6 | 790 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
791 | 0, /* bitpos */ |
| 792 | complain_overflow_dont, /* complain_on_overflow */ | |
| 793 | bfd_elf_generic_reloc, /* special_function */ | |
| 794 | "R_PPC64_ADDR64", /* name */ | |
| b34976b6 | 795 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 796 | 0, /* src_mask */ |
| f5e87a1d | 797 | ONES (64), /* dst_mask */ |
| b34976b6 | 798 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
799 | |
| 800 | /* The bits 32-47 of an address. */ | |
| 801 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
| 802 | 32, /* rightshift */ | |
| 803 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 804 | 16, /* bitsize */ | |
| b34976b6 | 805 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
806 | 0, /* bitpos */ |
| 807 | complain_overflow_dont, /* complain_on_overflow */ | |
| 808 | bfd_elf_generic_reloc, /* special_function */ | |
| 809 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
| b34976b6 | 810 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
811 | 0, /* src_mask */ |
| 812 | 0xffff, /* dst_mask */ | |
| b34976b6 | 813 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
814 | |
| 815 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
| 816 | 16 bits, treated as a signed number, is negative. */ | |
| 817 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
| 818 | 32, /* rightshift */ | |
| 819 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 820 | 16, /* bitsize */ | |
| b34976b6 | 821 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
822 | 0, /* bitpos */ |
| 823 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 824 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 825 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
| b34976b6 | 826 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
827 | 0, /* src_mask */ |
| 828 | 0xffff, /* dst_mask */ | |
| b34976b6 | 829 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
830 | |
| 831 | /* The bits 48-63 of an address. */ | |
| 832 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
| 833 | 48, /* rightshift */ | |
| 834 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 835 | 16, /* bitsize */ | |
| b34976b6 | 836 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
837 | 0, /* bitpos */ |
| 838 | complain_overflow_dont, /* complain_on_overflow */ | |
| 839 | bfd_elf_generic_reloc, /* special_function */ | |
| 840 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
| b34976b6 | 841 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
842 | 0, /* src_mask */ |
| 843 | 0xffff, /* dst_mask */ | |
| b34976b6 | 844 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
845 | |
| 846 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
| 847 | 16 bits, treated as a signed number, is negative. */ | |
| 848 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
| 849 | 48, /* rightshift */ | |
| 850 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 851 | 16, /* bitsize */ | |
| b34976b6 | 852 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
853 | 0, /* bitpos */ |
| 854 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 855 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 856 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
| b34976b6 | 857 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
858 | 0, /* src_mask */ |
| 859 | 0xffff, /* dst_mask */ | |
| b34976b6 | 860 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
861 | |
| 862 | /* Like ADDR64, but may be unaligned. */ | |
| 863 | HOWTO (R_PPC64_UADDR64, /* type */ | |
| 864 | 0, /* rightshift */ | |
| 865 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 866 | 64, /* bitsize */ | |
| b34976b6 | 867 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
868 | 0, /* bitpos */ |
| 869 | complain_overflow_dont, /* complain_on_overflow */ | |
| 870 | bfd_elf_generic_reloc, /* special_function */ | |
| 871 | "R_PPC64_UADDR64", /* name */ | |
| b34976b6 | 872 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 873 | 0, /* src_mask */ |
| f5e87a1d | 874 | ONES (64), /* dst_mask */ |
| b34976b6 | 875 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
876 | |
| 877 | /* 64-bit relative relocation. */ | |
| 878 | HOWTO (R_PPC64_REL64, /* type */ | |
| 879 | 0, /* rightshift */ | |
| 880 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 881 | 64, /* bitsize */ | |
| b34976b6 | 882 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
883 | 0, /* bitpos */ |
| 884 | complain_overflow_dont, /* complain_on_overflow */ | |
| 885 | bfd_elf_generic_reloc, /* special_function */ | |
| 886 | "R_PPC64_REL64", /* name */ | |
| b34976b6 | 887 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 888 | 0, /* src_mask */ |
| f5e87a1d | 889 | ONES (64), /* dst_mask */ |
| b34976b6 | 890 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 891 | |
| cedb70c5 | 892 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
893 | HOWTO (R_PPC64_PLT64, /* type */ |
| 894 | 0, /* rightshift */ | |
| 895 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 896 | 64, /* bitsize */ | |
| b34976b6 | 897 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
898 | 0, /* bitpos */ |
| 899 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 900 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 901 | "R_PPC64_PLT64", /* name */ |
| b34976b6 | 902 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 903 | 0, /* src_mask */ |
| f5e87a1d | 904 | ONES (64), /* dst_mask */ |
| b34976b6 | 905 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
906 | |
| 907 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
| 908 | table. */ | |
| 909 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
| 910 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
| 911 | 0, /* rightshift */ | |
| 912 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 913 | 64, /* bitsize */ | |
| b34976b6 | 914 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
915 | 0, /* bitpos */ |
| 916 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 917 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 918 | "R_PPC64_PLTREL64", /* name */ |
| b34976b6 | 919 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 920 | 0, /* src_mask */ |
| f5e87a1d | 921 | ONES (64), /* dst_mask */ |
| b34976b6 | 922 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
923 | |
| 924 | /* 16 bit TOC-relative relocation. */ | |
| 925 | ||
| 926 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
| 927 | HOWTO (R_PPC64_TOC16, /* type */ | |
| 928 | 0, /* rightshift */ | |
| 929 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 930 | 16, /* bitsize */ | |
| b34976b6 | 931 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
932 | 0, /* bitpos */ |
| 933 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 934 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 935 | "R_PPC64_TOC16", /* name */ |
| b34976b6 | 936 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
937 | 0, /* src_mask */ |
| 938 | 0xffff, /* dst_mask */ | |
| b34976b6 | 939 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
940 | |
| 941 | /* 16 bit TOC-relative relocation without overflow. */ | |
| 942 | ||
| 943 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
| 944 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
| 945 | 0, /* rightshift */ | |
| 946 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 947 | 16, /* bitsize */ | |
| b34976b6 | 948 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
949 | 0, /* bitpos */ |
| 950 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 951 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 952 | "R_PPC64_TOC16_LO", /* name */ |
| b34976b6 | 953 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
954 | 0, /* src_mask */ |
| 955 | 0xffff, /* dst_mask */ | |
| b34976b6 | 956 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
957 | |
| 958 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
| 959 | ||
| 960 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
| 961 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
| 962 | 16, /* rightshift */ | |
| 963 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 964 | 16, /* bitsize */ | |
| b34976b6 | 965 | FALSE, /* pc_relative */ |
| 5bd4f169 | 966 | 0, /* bitpos */ |
| f9c6b907 | 967 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 968 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 969 | "R_PPC64_TOC16_HI", /* name */ |
| b34976b6 | 970 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
971 | 0, /* src_mask */ |
| 972 | 0xffff, /* dst_mask */ | |
| b34976b6 | 973 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
974 | |
| 975 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
| 976 | contents of the low 16 bits, treated as a signed number, is | |
| 977 | negative. */ | |
| 978 | ||
| 979 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
| 980 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
| 981 | 16, /* rightshift */ | |
| 982 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 983 | 16, /* bitsize */ | |
| b34976b6 | 984 | FALSE, /* pc_relative */ |
| 5bd4f169 | 985 | 0, /* bitpos */ |
| f9c6b907 | 986 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 987 | ppc64_elf_toc_ha_reloc, /* special_function */ |
| 5bd4f169 | 988 | "R_PPC64_TOC16_HA", /* name */ |
| b34976b6 | 989 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
990 | 0, /* src_mask */ |
| 991 | 0xffff, /* dst_mask */ | |
| b34976b6 | 992 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
993 | |
| 994 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
| 995 | ||
| 996 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
| 997 | HOWTO (R_PPC64_TOC, /* type */ | |
| 998 | 0, /* rightshift */ | |
| 999 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1000 | 64, /* bitsize */ | |
| b34976b6 | 1001 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1002 | 0, /* bitpos */ |
| 1003 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 1004 | ppc64_elf_toc64_reloc, /* special_function */ |
| 5bd4f169 | 1005 | "R_PPC64_TOC", /* name */ |
| b34976b6 | 1006 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 1007 | 0, /* src_mask */ |
| f5e87a1d | 1008 | ONES (64), /* dst_mask */ |
| b34976b6 | 1009 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1010 | |
| 1011 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
| 1012 | value to relocate may (!) refer to a PLT entry which the link | |
| 1013 | editor (a) may replace with the symbol value. If the link editor | |
| 1014 | is unable to fully resolve the symbol, it may (b) create a PLT | |
| 1015 | entry and store the address to the new PLT entry in the GOT. | |
| 1016 | This permits lazy resolution of function symbols at run time. | |
| 1017 | The link editor may also skip all of this and just (c) emit a | |
| 1018 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
| 1019 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
| 1020 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
| 1021 | 0, /* rightshift */ | |
| 1022 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1023 | 16, /* bitsize */ | |
| b34976b6 | 1024 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1025 | 0, /* bitpos */ |
| 1026 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 1027 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb AM |
1028 | "R_PPC64_PLTGOT16", /* name */ |
| 1029 | FALSE, /* partial_inplace */ | |
| 1030 | 0, /* src_mask */ | |
| 1031 | 0xffff, /* dst_mask */ | |
| 1032 | FALSE), /* pcrel_offset */ | |
| 1033 | ||
| 1034 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
| 1035 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1036 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
| 1037 | 0, /* rightshift */ | |
| 1038 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1039 | 16, /* bitsize */ | |
| 1040 | FALSE, /* pc_relative */ | |
| 1041 | 0, /* bitpos */ | |
| 1042 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1043 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1044 | "R_PPC64_PLTGOT16_LO", /* name */ | |
| 1045 | FALSE, /* partial_inplace */ | |
| 1046 | 0, /* src_mask */ | |
| 1047 | 0xffff, /* dst_mask */ | |
| 1048 | FALSE), /* pcrel_offset */ | |
| 1049 | ||
| 1050 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
| 1051 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
| 1052 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
| 1053 | 16, /* rightshift */ | |
| 1054 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1055 | 16, /* bitsize */ | |
| 1056 | FALSE, /* pc_relative */ | |
| 1057 | 0, /* bitpos */ | |
| f9c6b907 | 1058 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1059 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1060 | "R_PPC64_PLTGOT16_HI", /* name */ | |
| 1061 | FALSE, /* partial_inplace */ | |
| 1062 | 0, /* src_mask */ | |
| 1063 | 0xffff, /* dst_mask */ | |
| 1064 | FALSE), /* pcrel_offset */ | |
| 1065 | ||
| 1066 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
| 1067 | 1 if the contents of the low 16 bits, treated as a signed number, | |
| 1068 | is negative. */ | |
| 1069 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
| 1070 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
| 1071 | 16, /* rightshift */ | |
| 1072 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1073 | 16, /* bitsize */ | |
| 1074 | FALSE, /* pc_relative */ | |
| 1075 | 0, /* bitpos */ | |
| f9c6b907 | 1076 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1077 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1078 | "R_PPC64_PLTGOT16_HA", /* name */ | |
| 1079 | FALSE, /* partial_inplace */ | |
| 1080 | 0, /* src_mask */ | |
| 1081 | 0xffff, /* dst_mask */ | |
| 1082 | FALSE), /* pcrel_offset */ | |
| 1083 | ||
| 1084 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
| 1085 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
| 1086 | 0, /* rightshift */ | |
| 1087 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1088 | 16, /* bitsize */ | |
| 1089 | FALSE, /* pc_relative */ | |
| 1090 | 0, /* bitpos */ | |
| 1091 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1092 | bfd_elf_generic_reloc, /* special_function */ | |
| 1093 | "R_PPC64_ADDR16_DS", /* name */ | |
| 1094 | FALSE, /* partial_inplace */ | |
| 1095 | 0, /* src_mask */ | |
| 1096 | 0xfffc, /* dst_mask */ | |
| 1097 | FALSE), /* pcrel_offset */ | |
| 1098 | ||
| 1099 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
| 1100 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
| 1101 | 0, /* rightshift */ | |
| 1102 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1103 | 16, /* bitsize */ | |
| 1104 | FALSE, /* pc_relative */ | |
| 1105 | 0, /* bitpos */ | |
| 1106 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1107 | bfd_elf_generic_reloc, /* special_function */ | |
| 1108 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
| 1109 | FALSE, /* partial_inplace */ | |
| 1110 | 0, /* src_mask */ | |
| 1111 | 0xfffc, /* dst_mask */ | |
| 1112 | FALSE), /* pcrel_offset */ | |
| 1113 | ||
| 1114 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
| 1115 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
| 1116 | 0, /* rightshift */ | |
| 1117 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1118 | 16, /* bitsize */ | |
| 1119 | FALSE, /* pc_relative */ | |
| 1120 | 0, /* bitpos */ | |
| 1121 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1122 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1123 | "R_PPC64_GOT16_DS", /* name */ | |
| 1124 | FALSE, /* partial_inplace */ | |
| 1125 | 0, /* src_mask */ | |
| 1126 | 0xfffc, /* dst_mask */ | |
| 1127 | FALSE), /* pcrel_offset */ | |
| 1128 | ||
| 1129 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
| 1130 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
| 1131 | 0, /* rightshift */ | |
| 1132 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1133 | 16, /* bitsize */ | |
| 1134 | FALSE, /* pc_relative */ | |
| 1135 | 0, /* bitpos */ | |
| 1136 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1137 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1138 | "R_PPC64_GOT16_LO_DS", /* name */ | |
| 1139 | FALSE, /* partial_inplace */ | |
| 1140 | 0, /* src_mask */ | |
| 1141 | 0xfffc, /* dst_mask */ | |
| 1142 | FALSE), /* pcrel_offset */ | |
| 1143 | ||
| 1144 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
| 1145 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
| 1146 | 0, /* rightshift */ | |
| 1147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1148 | 16, /* bitsize */ | |
| 1149 | FALSE, /* pc_relative */ | |
| 1150 | 0, /* bitpos */ | |
| 1151 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1152 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1153 | "R_PPC64_PLT16_LO_DS", /* name */ | |
| 1154 | FALSE, /* partial_inplace */ | |
| 1155 | 0, /* src_mask */ | |
| 1156 | 0xfffc, /* dst_mask */ | |
| 1157 | FALSE), /* pcrel_offset */ | |
| 1158 | ||
| 1159 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
| 1160 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
| 1161 | 0, /* rightshift */ | |
| 1162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1163 | 16, /* bitsize */ | |
| 1164 | FALSE, /* pc_relative */ | |
| 1165 | 0, /* bitpos */ | |
| 1166 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1167 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1168 | "R_PPC64_SECTOFF_DS", /* name */ | |
| 1169 | FALSE, /* partial_inplace */ | |
| 1170 | 0, /* src_mask */ | |
| 1171 | 0xfffc, /* dst_mask */ | |
| 1172 | FALSE), /* pcrel_offset */ | |
| 1173 | ||
| 1174 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
| 1175 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
| 1176 | 0, /* rightshift */ | |
| 1177 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1178 | 16, /* bitsize */ | |
| 1179 | FALSE, /* pc_relative */ | |
| 1180 | 0, /* bitpos */ | |
| 1181 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1182 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1183 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
| 1184 | FALSE, /* partial_inplace */ | |
| 1185 | 0, /* src_mask */ | |
| 1186 | 0xfffc, /* dst_mask */ | |
| 1187 | FALSE), /* pcrel_offset */ | |
| 1188 | ||
| 1189 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
| 1190 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
| 1191 | 0, /* rightshift */ | |
| 1192 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1193 | 16, /* bitsize */ | |
| 1194 | FALSE, /* pc_relative */ | |
| 1195 | 0, /* bitpos */ | |
| 1196 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1197 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1198 | "R_PPC64_TOC16_DS", /* name */ | |
| 1199 | FALSE, /* partial_inplace */ | |
| 1200 | 0, /* src_mask */ | |
| 1201 | 0xfffc, /* dst_mask */ | |
| 1202 | FALSE), /* pcrel_offset */ | |
| 1203 | ||
| 1204 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
| 1205 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
| 1206 | 0, /* rightshift */ | |
| 1207 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1208 | 16, /* bitsize */ | |
| 1209 | FALSE, /* pc_relative */ | |
| 1210 | 0, /* bitpos */ | |
| 1211 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1212 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1213 | "R_PPC64_TOC16_LO_DS", /* name */ | |
| 1214 | FALSE, /* partial_inplace */ | |
| 1215 | 0, /* src_mask */ | |
| 1216 | 0xfffc, /* dst_mask */ | |
| 1217 | FALSE), /* pcrel_offset */ | |
| 1218 | ||
| 1219 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
| 1220 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
| 6bfdb61b | 1221 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
| 411e1bfb AM |
1222 | 0, /* rightshift */ |
| 1223 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1224 | 16, /* bitsize */ | |
| 1225 | FALSE, /* pc_relative */ | |
| 1226 | 0, /* bitpos */ | |
| 1227 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1228 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1229 | "R_PPC64_PLTGOT16_DS", /* name */ | |
| 1230 | FALSE, /* partial_inplace */ | |
| 1231 | 0, /* src_mask */ | |
| 1232 | 0xfffc, /* dst_mask */ | |
| 1233 | FALSE), /* pcrel_offset */ | |
| 1234 | ||
| 1235 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
| 1236 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1237 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
| 1238 | 0, /* rightshift */ | |
| 1239 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1240 | 16, /* bitsize */ | |
| 1241 | FALSE, /* pc_relative */ | |
| 1242 | 0, /* bitpos */ | |
| 1243 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1244 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1245 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
| 1246 | FALSE, /* partial_inplace */ | |
| 1247 | 0, /* src_mask */ | |
| 1248 | 0xfffc, /* dst_mask */ | |
| 1249 | FALSE), /* pcrel_offset */ | |
| 1250 | ||
| 727fc41e | 1251 | /* Marker relocs for TLS. */ |
| 411e1bfb AM |
1252 | HOWTO (R_PPC64_TLS, |
| 1253 | 0, /* rightshift */ | |
| 1254 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1255 | 32, /* bitsize */ | |
| 1256 | FALSE, /* pc_relative */ | |
| 1257 | 0, /* bitpos */ | |
| 1258 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1259 | bfd_elf_generic_reloc, /* special_function */ | |
| 1260 | "R_PPC64_TLS", /* name */ | |
| 1261 | FALSE, /* partial_inplace */ | |
| 1262 | 0, /* src_mask */ | |
| 1263 | 0, /* dst_mask */ | |
| 1264 | FALSE), /* pcrel_offset */ | |
| 1265 | ||
| 727fc41e AM |
1266 | HOWTO (R_PPC64_TLSGD, |
| 1267 | 0, /* rightshift */ | |
| 1268 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1269 | 32, /* bitsize */ | |
| 1270 | FALSE, /* pc_relative */ | |
| 1271 | 0, /* bitpos */ | |
| 1272 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1273 | bfd_elf_generic_reloc, /* special_function */ | |
| 1274 | "R_PPC64_TLSGD", /* name */ | |
| 1275 | FALSE, /* partial_inplace */ | |
| 1276 | 0, /* src_mask */ | |
| 1277 | 0, /* dst_mask */ | |
| 1278 | FALSE), /* pcrel_offset */ | |
| 1279 | ||
| 1280 | HOWTO (R_PPC64_TLSLD, | |
| 1281 | 0, /* rightshift */ | |
| 1282 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1283 | 32, /* bitsize */ | |
| 1284 | FALSE, /* pc_relative */ | |
| 1285 | 0, /* bitpos */ | |
| 1286 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1287 | bfd_elf_generic_reloc, /* special_function */ | |
| 1288 | "R_PPC64_TLSLD", /* name */ | |
| 1289 | FALSE, /* partial_inplace */ | |
| 1290 | 0, /* src_mask */ | |
| 1291 | 0, /* dst_mask */ | |
| 1292 | FALSE), /* pcrel_offset */ | |
| 1293 | ||
| 3b421ab3 AM |
1294 | HOWTO (R_PPC64_TOCSAVE, |
| 1295 | 0, /* rightshift */ | |
| 1296 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1297 | 32, /* bitsize */ | |
| 1298 | FALSE, /* pc_relative */ | |
| 1299 | 0, /* bitpos */ | |
| 1300 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1301 | bfd_elf_generic_reloc, /* special_function */ | |
| 1302 | "R_PPC64_TOCSAVE", /* name */ | |
| 1303 | FALSE, /* partial_inplace */ | |
| 1304 | 0, /* src_mask */ | |
| 1305 | 0, /* dst_mask */ | |
| 1306 | FALSE), /* pcrel_offset */ | |
| 1307 | ||
| 411e1bfb AM |
1308 | /* Computes the load module index of the load module that contains the |
| 1309 | definition of its TLS sym. */ | |
| 1310 | HOWTO (R_PPC64_DTPMOD64, | |
| 1311 | 0, /* rightshift */ | |
| 1312 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1313 | 64, /* bitsize */ | |
| 1314 | FALSE, /* pc_relative */ | |
| 1315 | 0, /* bitpos */ | |
| 1316 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1317 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1318 | "R_PPC64_DTPMOD64", /* name */ | |
| 1319 | FALSE, /* partial_inplace */ | |
| 1320 | 0, /* src_mask */ | |
| 1321 | ONES (64), /* dst_mask */ | |
| 1322 | FALSE), /* pcrel_offset */ | |
| 1323 | ||
| 1324 | /* Computes a dtv-relative displacement, the difference between the value | |
| 1325 | of sym+add and the base address of the thread-local storage block that | |
| 1326 | contains the definition of sym, minus 0x8000. */ | |
| 1327 | HOWTO (R_PPC64_DTPREL64, | |
| 1328 | 0, /* rightshift */ | |
| 1329 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1330 | 64, /* bitsize */ | |
| 1331 | FALSE, /* pc_relative */ | |
| 1332 | 0, /* bitpos */ | |
| 1333 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1334 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1335 | "R_PPC64_DTPREL64", /* name */ | |
| 1336 | FALSE, /* partial_inplace */ | |
| 1337 | 0, /* src_mask */ | |
| 1338 | ONES (64), /* dst_mask */ | |
| 1339 | FALSE), /* pcrel_offset */ | |
| 1340 | ||
| 1341 | /* A 16 bit dtprel reloc. */ | |
| 1342 | HOWTO (R_PPC64_DTPREL16, | |
| 1343 | 0, /* rightshift */ | |
| 1344 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1345 | 16, /* bitsize */ | |
| 1346 | FALSE, /* pc_relative */ | |
| 1347 | 0, /* bitpos */ | |
| 1348 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1349 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1350 | "R_PPC64_DTPREL16", /* name */ | |
| 1351 | FALSE, /* partial_inplace */ | |
| 1352 | 0, /* src_mask */ | |
| 1353 | 0xffff, /* dst_mask */ | |
| 1354 | FALSE), /* pcrel_offset */ | |
| 1355 | ||
| 1356 | /* Like DTPREL16, but no overflow. */ | |
| 1357 | HOWTO (R_PPC64_DTPREL16_LO, | |
| 1358 | 0, /* rightshift */ | |
| 1359 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1360 | 16, /* bitsize */ | |
| 1361 | FALSE, /* pc_relative */ | |
| 1362 | 0, /* bitpos */ | |
| 1363 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1364 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1365 | "R_PPC64_DTPREL16_LO", /* name */ | |
| 1366 | FALSE, /* partial_inplace */ | |
| 1367 | 0, /* src_mask */ | |
| 1368 | 0xffff, /* dst_mask */ | |
| 1369 | FALSE), /* pcrel_offset */ | |
| 1370 | ||
| 1371 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
| 1372 | HOWTO (R_PPC64_DTPREL16_HI, | |
| 1373 | 16, /* rightshift */ | |
| 1374 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1375 | 16, /* bitsize */ | |
| 1376 | FALSE, /* pc_relative */ | |
| 1377 | 0, /* bitpos */ | |
| f9c6b907 | 1378 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1379 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1380 | "R_PPC64_DTPREL16_HI", /* name */ | |
| 1381 | FALSE, /* partial_inplace */ | |
| 1382 | 0, /* src_mask */ | |
| 1383 | 0xffff, /* dst_mask */ | |
| 1384 | FALSE), /* pcrel_offset */ | |
| 1385 | ||
| 1386 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
| 1387 | HOWTO (R_PPC64_DTPREL16_HA, | |
| 1388 | 16, /* rightshift */ | |
| 1389 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1390 | 16, /* bitsize */ | |
| 1391 | FALSE, /* pc_relative */ | |
| 1392 | 0, /* bitpos */ | |
| f9c6b907 | 1393 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1394 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1395 | "R_PPC64_DTPREL16_HA", /* name */ | |
| 1396 | FALSE, /* partial_inplace */ | |
| 1397 | 0, /* src_mask */ | |
| 1398 | 0xffff, /* dst_mask */ | |
| 1399 | FALSE), /* pcrel_offset */ | |
| 1400 | ||
| 1401 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
| 1402 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
| 1403 | 32, /* rightshift */ | |
| 1404 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1405 | 16, /* bitsize */ | |
| 1406 | FALSE, /* pc_relative */ | |
| 1407 | 0, /* bitpos */ | |
| 1408 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1409 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1410 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
| 1411 | FALSE, /* partial_inplace */ | |
| 1412 | 0, /* src_mask */ | |
| 1413 | 0xffff, /* dst_mask */ | |
| 1414 | FALSE), /* pcrel_offset */ | |
| 1415 | ||
| 1416 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1417 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
| 1418 | 32, /* rightshift */ | |
| 1419 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1420 | 16, /* bitsize */ | |
| 1421 | FALSE, /* pc_relative */ | |
| 1422 | 0, /* bitpos */ | |
| 1423 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1424 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1425 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
| 1426 | FALSE, /* partial_inplace */ | |
| 1427 | 0, /* src_mask */ | |
| 1428 | 0xffff, /* dst_mask */ | |
| 1429 | FALSE), /* pcrel_offset */ | |
| 1430 | ||
| 1431 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1432 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
| 1433 | 48, /* rightshift */ | |
| 1434 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1435 | 16, /* bitsize */ | |
| 1436 | FALSE, /* pc_relative */ | |
| 1437 | 0, /* bitpos */ | |
| 1438 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1439 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1440 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
| 1441 | FALSE, /* partial_inplace */ | |
| 1442 | 0, /* src_mask */ | |
| 1443 | 0xffff, /* dst_mask */ | |
| 1444 | FALSE), /* pcrel_offset */ | |
| 1445 | ||
| 1446 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1447 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
| 1448 | 48, /* rightshift */ | |
| 1449 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1450 | 16, /* bitsize */ | |
| 1451 | FALSE, /* pc_relative */ | |
| 1452 | 0, /* bitpos */ | |
| 1453 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1454 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1455 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
| 1456 | FALSE, /* partial_inplace */ | |
| 1457 | 0, /* src_mask */ | |
| 1458 | 0xffff, /* dst_mask */ | |
| 1459 | FALSE), /* pcrel_offset */ | |
| 1460 | ||
| 1461 | /* Like DTPREL16, but for insns with a DS field. */ | |
| 1462 | HOWTO (R_PPC64_DTPREL16_DS, | |
| 1463 | 0, /* rightshift */ | |
| 1464 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1465 | 16, /* bitsize */ | |
| 1466 | FALSE, /* pc_relative */ | |
| 1467 | 0, /* bitpos */ | |
| 1468 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1469 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1470 | "R_PPC64_DTPREL16_DS", /* name */ | |
| 1471 | FALSE, /* partial_inplace */ | |
| 1472 | 0, /* src_mask */ | |
| 1473 | 0xfffc, /* dst_mask */ | |
| 1474 | FALSE), /* pcrel_offset */ | |
| 1475 | ||
| 1476 | /* Like DTPREL16_DS, but no overflow. */ | |
| 1477 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
| 1478 | 0, /* rightshift */ | |
| 1479 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1480 | 16, /* bitsize */ | |
| 1481 | FALSE, /* pc_relative */ | |
| 1482 | 0, /* bitpos */ | |
| 1483 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1484 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1485 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
| 1486 | FALSE, /* partial_inplace */ | |
| 1487 | 0, /* src_mask */ | |
| 1488 | 0xfffc, /* dst_mask */ | |
| 1489 | FALSE), /* pcrel_offset */ | |
| 1490 | ||
| 1491 | /* Computes a tp-relative displacement, the difference between the value of | |
| 1492 | sym+add and the value of the thread pointer (r13). */ | |
| 1493 | HOWTO (R_PPC64_TPREL64, | |
| 1494 | 0, /* rightshift */ | |
| 1495 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1496 | 64, /* bitsize */ | |
| 1497 | FALSE, /* pc_relative */ | |
| 1498 | 0, /* bitpos */ | |
| 1499 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1500 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1501 | "R_PPC64_TPREL64", /* name */ | |
| 1502 | FALSE, /* partial_inplace */ | |
| 1503 | 0, /* src_mask */ | |
| 1504 | ONES (64), /* dst_mask */ | |
| 1505 | FALSE), /* pcrel_offset */ | |
| 1506 | ||
| 1507 | /* A 16 bit tprel reloc. */ | |
| 1508 | HOWTO (R_PPC64_TPREL16, | |
| 1509 | 0, /* rightshift */ | |
| 1510 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1511 | 16, /* bitsize */ | |
| 1512 | FALSE, /* pc_relative */ | |
| 1513 | 0, /* bitpos */ | |
| 1514 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1515 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1516 | "R_PPC64_TPREL16", /* name */ | |
| 1517 | FALSE, /* partial_inplace */ | |
| 1518 | 0, /* src_mask */ | |
| 1519 | 0xffff, /* dst_mask */ | |
| 1520 | FALSE), /* pcrel_offset */ | |
| 1521 | ||
| 1522 | /* Like TPREL16, but no overflow. */ | |
| 1523 | HOWTO (R_PPC64_TPREL16_LO, | |
| 1524 | 0, /* rightshift */ | |
| 1525 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1526 | 16, /* bitsize */ | |
| 1527 | FALSE, /* pc_relative */ | |
| 1528 | 0, /* bitpos */ | |
| 1529 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1530 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1531 | "R_PPC64_TPREL16_LO", /* name */ | |
| 1532 | FALSE, /* partial_inplace */ | |
| 1533 | 0, /* src_mask */ | |
| 1534 | 0xffff, /* dst_mask */ | |
| 1535 | FALSE), /* pcrel_offset */ | |
| 1536 | ||
| 1537 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
| 1538 | HOWTO (R_PPC64_TPREL16_HI, | |
| 1539 | 16, /* rightshift */ | |
| 1540 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1541 | 16, /* bitsize */ | |
| 1542 | FALSE, /* pc_relative */ | |
| 1543 | 0, /* bitpos */ | |
| f9c6b907 | 1544 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1545 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1546 | "R_PPC64_TPREL16_HI", /* name */ | |
| 1547 | FALSE, /* partial_inplace */ | |
| 1548 | 0, /* src_mask */ | |
| 1549 | 0xffff, /* dst_mask */ | |
| 1550 | FALSE), /* pcrel_offset */ | |
| 1551 | ||
| 1552 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
| 1553 | HOWTO (R_PPC64_TPREL16_HA, | |
| 1554 | 16, /* rightshift */ | |
| 1555 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1556 | 16, /* bitsize */ | |
| 1557 | FALSE, /* pc_relative */ | |
| 1558 | 0, /* bitpos */ | |
| f9c6b907 | 1559 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1560 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1561 | "R_PPC64_TPREL16_HA", /* name */ | |
| 1562 | FALSE, /* partial_inplace */ | |
| 1563 | 0, /* src_mask */ | |
| 1564 | 0xffff, /* dst_mask */ | |
| 1565 | FALSE), /* pcrel_offset */ | |
| 1566 | ||
| 1567 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
| 1568 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
| 1569 | 32, /* rightshift */ | |
| 1570 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1571 | 16, /* bitsize */ | |
| 1572 | FALSE, /* pc_relative */ | |
| 1573 | 0, /* bitpos */ | |
| 1574 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1575 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1576 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
| 1577 | FALSE, /* partial_inplace */ | |
| 1578 | 0, /* src_mask */ | |
| 1579 | 0xffff, /* dst_mask */ | |
| 1580 | FALSE), /* pcrel_offset */ | |
| 1581 | ||
| 1582 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1583 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
| 1584 | 32, /* rightshift */ | |
| 1585 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1586 | 16, /* bitsize */ | |
| 1587 | FALSE, /* pc_relative */ | |
| 1588 | 0, /* bitpos */ | |
| 1589 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1590 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1591 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
| 1592 | FALSE, /* partial_inplace */ | |
| 1593 | 0, /* src_mask */ | |
| 1594 | 0xffff, /* dst_mask */ | |
| 1595 | FALSE), /* pcrel_offset */ | |
| 1596 | ||
| 1597 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1598 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
| 1599 | 48, /* rightshift */ | |
| 1600 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1601 | 16, /* bitsize */ | |
| 1602 | FALSE, /* pc_relative */ | |
| 1603 | 0, /* bitpos */ | |
| 1604 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1605 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1606 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
| 1607 | FALSE, /* partial_inplace */ | |
| 1608 | 0, /* src_mask */ | |
| 1609 | 0xffff, /* dst_mask */ | |
| 1610 | FALSE), /* pcrel_offset */ | |
| 1611 | ||
| 1612 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1613 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
| 1614 | 48, /* rightshift */ | |
| 1615 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1616 | 16, /* bitsize */ | |
| 1617 | FALSE, /* pc_relative */ | |
| 1618 | 0, /* bitpos */ | |
| 1619 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1620 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1621 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
| 1622 | FALSE, /* partial_inplace */ | |
| 1623 | 0, /* src_mask */ | |
| 1624 | 0xffff, /* dst_mask */ | |
| 1625 | FALSE), /* pcrel_offset */ | |
| 1626 | ||
| 1627 | /* Like TPREL16, but for insns with a DS field. */ | |
| 1628 | HOWTO (R_PPC64_TPREL16_DS, | |
| 1629 | 0, /* rightshift */ | |
| 1630 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1631 | 16, /* bitsize */ | |
| 1632 | FALSE, /* pc_relative */ | |
| 1633 | 0, /* bitpos */ | |
| 1634 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1635 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1636 | "R_PPC64_TPREL16_DS", /* name */ | |
| 1637 | FALSE, /* partial_inplace */ | |
| 1638 | 0, /* src_mask */ | |
| 1639 | 0xfffc, /* dst_mask */ | |
| 1640 | FALSE), /* pcrel_offset */ | |
| 1641 | ||
| 1642 | /* Like TPREL16_DS, but no overflow. */ | |
| 1643 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
| 1644 | 0, /* rightshift */ | |
| 1645 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1646 | 16, /* bitsize */ | |
| 1647 | FALSE, /* pc_relative */ | |
| 1648 | 0, /* bitpos */ | |
| 1649 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1650 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1651 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
| 1652 | FALSE, /* partial_inplace */ | |
| 1653 | 0, /* src_mask */ | |
| 1654 | 0xfffc, /* dst_mask */ | |
| 1655 | FALSE), /* pcrel_offset */ | |
| 1656 | ||
| 1657 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
| 1658 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
| 1659 | to the first entry relative to the TOC base (r2). */ | |
| 1660 | HOWTO (R_PPC64_GOT_TLSGD16, | |
| 1661 | 0, /* rightshift */ | |
| 1662 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1663 | 16, /* bitsize */ | |
| 1664 | FALSE, /* pc_relative */ | |
| 1665 | 0, /* bitpos */ | |
| 1666 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1667 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1668 | "R_PPC64_GOT_TLSGD16", /* name */ | |
| b34976b6 | 1669 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1670 | 0, /* src_mask */ |
| 1671 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1672 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1673 | |
| 411e1bfb AM |
1674 | /* Like GOT_TLSGD16, but no overflow. */ |
| 1675 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
| 5bd4f169 AM |
1676 | 0, /* rightshift */ |
| 1677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1678 | 16, /* bitsize */ | |
| b34976b6 | 1679 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1680 | 0, /* bitpos */ |
| 1681 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1682 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1683 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
| b34976b6 | 1684 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1685 | 0, /* src_mask */ |
| 1686 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1687 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1688 | |
| 411e1bfb AM |
1689 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
| 1690 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
| 5bd4f169 AM |
1691 | 16, /* rightshift */ |
| 1692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1693 | 16, /* bitsize */ | |
| b34976b6 | 1694 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1695 | 0, /* bitpos */ |
| f9c6b907 | 1696 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1697 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1698 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
| b34976b6 | 1699 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1700 | 0, /* src_mask */ |
| 1701 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1702 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1703 | |
| 411e1bfb AM |
1704 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
| 1705 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
| 5bd4f169 AM |
1706 | 16, /* rightshift */ |
| 1707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1708 | 16, /* bitsize */ | |
| b34976b6 | 1709 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1710 | 0, /* bitpos */ |
| f9c6b907 | 1711 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1712 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1713 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
| b34976b6 | 1714 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1715 | 0, /* src_mask */ |
| 1716 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1717 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1718 | |
| 411e1bfb AM |
1719 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
| 1720 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
| 1721 | first entry relative to the TOC base (r2). */ | |
| 1722 | HOWTO (R_PPC64_GOT_TLSLD16, | |
| 5bd4f169 AM |
1723 | 0, /* rightshift */ |
| 1724 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1725 | 16, /* bitsize */ | |
| b34976b6 | 1726 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1727 | 0, /* bitpos */ |
| 411e1bfb AM |
1728 | complain_overflow_signed, /* complain_on_overflow */ |
| 1729 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1730 | "R_PPC64_GOT_TLSLD16", /* name */ | |
| b34976b6 | 1731 | FALSE, /* partial_inplace */ |
| d006db6c | 1732 | 0, /* src_mask */ |
| 411e1bfb | 1733 | 0xffff, /* dst_mask */ |
| b34976b6 | 1734 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1735 | |
| 411e1bfb AM |
1736 | /* Like GOT_TLSLD16, but no overflow. */ |
| 1737 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
| 5bd4f169 AM |
1738 | 0, /* rightshift */ |
| 1739 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1740 | 16, /* bitsize */ | |
| b34976b6 | 1741 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1742 | 0, /* bitpos */ |
| 411e1bfb AM |
1743 | complain_overflow_dont, /* complain_on_overflow */ |
| 1744 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1745 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
| b34976b6 | 1746 | FALSE, /* partial_inplace */ |
| d006db6c | 1747 | 0, /* src_mask */ |
| 411e1bfb | 1748 | 0xffff, /* dst_mask */ |
| b34976b6 | 1749 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1750 | |
| 411e1bfb AM |
1751 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
| 1752 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
| 1753 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1754 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1755 | 16, /* bitsize */ | |
| b34976b6 | 1756 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1757 | 0, /* bitpos */ |
| f9c6b907 | 1758 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1759 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1760 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
| b34976b6 | 1761 | FALSE, /* partial_inplace */ |
| d006db6c | 1762 | 0, /* src_mask */ |
| 411e1bfb | 1763 | 0xffff, /* dst_mask */ |
| b34976b6 | 1764 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1765 | |
| 411e1bfb AM |
1766 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
| 1767 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
| 1768 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1769 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1770 | 16, /* bitsize */ | |
| b34976b6 | 1771 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1772 | 0, /* bitpos */ |
| f9c6b907 | 1773 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1774 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1775 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
| b34976b6 | 1776 | FALSE, /* partial_inplace */ |
| d006db6c | 1777 | 0, /* src_mask */ |
| 411e1bfb | 1778 | 0xffff, /* dst_mask */ |
| b34976b6 | 1779 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1780 | |
| 411e1bfb AM |
1781 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
| 1782 | the offset to the entry relative to the TOC base (r2). */ | |
| 1783 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
| 5bd4f169 AM |
1784 | 0, /* rightshift */ |
| 1785 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1786 | 16, /* bitsize */ | |
| b34976b6 | 1787 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1788 | 0, /* bitpos */ |
| 411e1bfb | 1789 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1790 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1791 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
| b34976b6 | 1792 | FALSE, /* partial_inplace */ |
| d006db6c | 1793 | 0, /* src_mask */ |
| 5bd4f169 | 1794 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1795 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1796 | |
| 411e1bfb AM |
1797 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
| 1798 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
| 5bd4f169 | 1799 | 0, /* rightshift */ |
| c061c2d8 AM |
1800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1801 | 16, /* bitsize */ | |
| b34976b6 | 1802 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1803 | 0, /* bitpos */ |
| 411e1bfb AM |
1804 | complain_overflow_dont, /* complain_on_overflow */ |
| 1805 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1806 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
| b34976b6 | 1807 | FALSE, /* partial_inplace */ |
| d006db6c | 1808 | 0, /* src_mask */ |
| c061c2d8 | 1809 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1810 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1811 | |
| 411e1bfb AM |
1812 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1813 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
| 1814 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1815 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1816 | 16, /* bitsize */ | |
| b34976b6 | 1817 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1818 | 0, /* bitpos */ |
| f9c6b907 | 1819 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1820 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1821 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
| b34976b6 | 1822 | FALSE, /* partial_inplace */ |
| d006db6c | 1823 | 0, /* src_mask */ |
| 411e1bfb | 1824 | 0xffff, /* dst_mask */ |
| b34976b6 | 1825 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1826 | |
| 411e1bfb AM |
1827 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
| 1828 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
| 1829 | 16, /* rightshift */ | |
| 1830 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1831 | 16, /* bitsize */ | |
| 1832 | FALSE, /* pc_relative */ | |
| 1833 | 0, /* bitpos */ | |
| f9c6b907 | 1834 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1835 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1836 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
| 1837 | FALSE, /* partial_inplace */ | |
| 1838 | 0, /* src_mask */ | |
| 1839 | 0xffff, /* dst_mask */ | |
| 1840 | FALSE), /* pcrel_offset */ | |
| 1841 | ||
| 1842 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
| 1843 | offset to the entry relative to the TOC base (r2). */ | |
| 1844 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
| 5bd4f169 AM |
1845 | 0, /* rightshift */ |
| 1846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1847 | 16, /* bitsize */ | |
| b34976b6 | 1848 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1849 | 0, /* bitpos */ |
| 1850 | complain_overflow_signed, /* complain_on_overflow */ | |
| 411e1bfb AM |
1851 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1852 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
| b34976b6 | 1853 | FALSE, /* partial_inplace */ |
| d006db6c | 1854 | 0, /* src_mask */ |
| ad8e1ba5 | 1855 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1856 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1857 | |
| 411e1bfb AM |
1858 | /* Like GOT_TPREL16_DS, but no overflow. */ |
| 1859 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
| 5bd4f169 AM |
1860 | 0, /* rightshift */ |
| 1861 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1862 | 16, /* bitsize */ | |
| b34976b6 | 1863 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1864 | 0, /* bitpos */ |
| 1865 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1866 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1867 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
| b34976b6 | 1868 | FALSE, /* partial_inplace */ |
| d006db6c | 1869 | 0, /* src_mask */ |
| ad8e1ba5 | 1870 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1871 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1872 | |
| 411e1bfb AM |
1873 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1874 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
| 1875 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1876 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1877 | 16, /* bitsize */ | |
| b34976b6 | 1878 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1879 | 0, /* bitpos */ |
| f9c6b907 | 1880 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1881 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1882 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
| b34976b6 | 1883 | FALSE, /* partial_inplace */ |
| d006db6c | 1884 | 0, /* src_mask */ |
| 411e1bfb | 1885 | 0xffff, /* dst_mask */ |
| b34976b6 | 1886 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1887 | |
| 411e1bfb AM |
1888 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
| 1889 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
| 1890 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1891 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1892 | 16, /* bitsize */ | |
| b34976b6 | 1893 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1894 | 0, /* bitpos */ |
| f9c6b907 | 1895 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1896 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1897 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
| b34976b6 | 1898 | FALSE, /* partial_inplace */ |
| d006db6c | 1899 | 0, /* src_mask */ |
| 411e1bfb | 1900 | 0xffff, /* dst_mask */ |
| b34976b6 | 1901 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1902 | |
| 25f23106 AM |
1903 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
| 1904 | 0, /* rightshift */ | |
| 1905 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1906 | 0, /* bitsize */ | |
| 1907 | FALSE, /* pc_relative */ | |
| 1908 | 0, /* bitpos */ | |
| 1909 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1910 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1911 | "R_PPC64_JMP_IREL", /* name */ | |
| 1912 | FALSE, /* partial_inplace */ | |
| 1913 | 0, /* src_mask */ | |
| 1914 | 0, /* dst_mask */ | |
| 1915 | FALSE), /* pcrel_offset */ | |
| 1916 | ||
| e054468f AM |
1917 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
| 1918 | 0, /* rightshift */ | |
| 1919 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1920 | 64, /* bitsize */ | |
| 1921 | FALSE, /* pc_relative */ | |
| 1922 | 0, /* bitpos */ | |
| 1923 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1924 | bfd_elf_generic_reloc, /* special_function */ | |
| 1925 | "R_PPC64_IRELATIVE", /* name */ | |
| 1926 | FALSE, /* partial_inplace */ | |
| 1927 | 0, /* src_mask */ | |
| 1928 | ONES (64), /* dst_mask */ | |
| 1929 | FALSE), /* pcrel_offset */ | |
| 1930 | ||
| 25f23106 AM |
1931 | /* A 16 bit relative relocation. */ |
| 1932 | HOWTO (R_PPC64_REL16, /* type */ | |
| 1933 | 0, /* rightshift */ | |
| 1934 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1935 | 16, /* bitsize */ | |
| 1936 | TRUE, /* pc_relative */ | |
| 1937 | 0, /* bitpos */ | |
| 1938 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1939 | bfd_elf_generic_reloc, /* special_function */ | |
| 1940 | "R_PPC64_REL16", /* name */ | |
| 1941 | FALSE, /* partial_inplace */ | |
| 1942 | 0, /* src_mask */ | |
| 1943 | 0xffff, /* dst_mask */ | |
| 1944 | TRUE), /* pcrel_offset */ | |
| 1945 | ||
| 1946 | /* A 16 bit relative relocation without overflow. */ | |
| 1947 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
| 1948 | 0, /* rightshift */ | |
| 1949 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1950 | 16, /* bitsize */ | |
| 1951 | TRUE, /* pc_relative */ | |
| 1952 | 0, /* bitpos */ | |
| 1953 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1954 | bfd_elf_generic_reloc, /* special_function */ | |
| 1955 | "R_PPC64_REL16_LO", /* name */ | |
| 1956 | FALSE, /* partial_inplace */ | |
| 1957 | 0, /* src_mask */ | |
| 1958 | 0xffff, /* dst_mask */ | |
| 1959 | TRUE), /* pcrel_offset */ | |
| 1960 | ||
| 1961 | /* The high order 16 bits of a relative address. */ | |
| 1962 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
| 1963 | 16, /* rightshift */ | |
| 1964 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1965 | 16, /* bitsize */ | |
| 1966 | TRUE, /* pc_relative */ | |
| 1967 | 0, /* bitpos */ | |
| f9c6b907 | 1968 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1969 | bfd_elf_generic_reloc, /* special_function */ |
| 1970 | "R_PPC64_REL16_HI", /* name */ | |
| 1971 | FALSE, /* partial_inplace */ | |
| 1972 | 0, /* src_mask */ | |
| 1973 | 0xffff, /* dst_mask */ | |
| 1974 | TRUE), /* pcrel_offset */ | |
| 1975 | ||
| 1976 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
| 1977 | the low 16 bits, treated as a signed number, is negative. */ | |
| 1978 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
| 1979 | 16, /* rightshift */ | |
| 1980 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1981 | 16, /* bitsize */ | |
| 1982 | TRUE, /* pc_relative */ | |
| 1983 | 0, /* bitpos */ | |
| f9c6b907 | 1984 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1985 | ppc64_elf_ha_reloc, /* special_function */ |
| 1986 | "R_PPC64_REL16_HA", /* name */ | |
| 1987 | FALSE, /* partial_inplace */ | |
| 1988 | 0, /* src_mask */ | |
| 1989 | 0xffff, /* dst_mask */ | |
| 1990 | TRUE), /* pcrel_offset */ | |
| 1991 | ||
| f9c6b907 AM |
1992 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
| 1993 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
| 1994 | 16, /* rightshift */ | |
| 1995 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1996 | 16, /* bitsize */ | |
| 1997 | FALSE, /* pc_relative */ | |
| 1998 | 0, /* bitpos */ | |
| 1999 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2000 | bfd_elf_generic_reloc, /* special_function */ | |
| 2001 | "R_PPC64_ADDR16_HIGH", /* name */ | |
| 2002 | FALSE, /* partial_inplace */ | |
| 2003 | 0, /* src_mask */ | |
| 2004 | 0xffff, /* dst_mask */ | |
| 2005 | FALSE), /* pcrel_offset */ | |
| 2006 | ||
| 2007 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
| 2008 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
| 2009 | 16, /* rightshift */ | |
| 2010 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2011 | 16, /* bitsize */ | |
| 2012 | FALSE, /* pc_relative */ | |
| 2013 | 0, /* bitpos */ | |
| 2014 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2015 | ppc64_elf_ha_reloc, /* special_function */ | |
| 2016 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
| 2017 | FALSE, /* partial_inplace */ | |
| 2018 | 0, /* src_mask */ | |
| 2019 | 0xffff, /* dst_mask */ | |
| 2020 | FALSE), /* pcrel_offset */ | |
| 2021 | ||
| 2022 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
| 2023 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
| 2024 | 16, /* rightshift */ | |
| 2025 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2026 | 16, /* bitsize */ | |
| 2027 | FALSE, /* pc_relative */ | |
| 2028 | 0, /* bitpos */ | |
| 2029 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2030 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2031 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
| 2032 | FALSE, /* partial_inplace */ | |
| 2033 | 0, /* src_mask */ | |
| 2034 | 0xffff, /* dst_mask */ | |
| 2035 | FALSE), /* pcrel_offset */ | |
| 2036 | ||
| 2037 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
| 2038 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
| 2039 | 16, /* rightshift */ | |
| 2040 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2041 | 16, /* bitsize */ | |
| 2042 | FALSE, /* pc_relative */ | |
| 2043 | 0, /* bitpos */ | |
| 2044 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2045 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2046 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
| 2047 | FALSE, /* partial_inplace */ | |
| 2048 | 0, /* src_mask */ | |
| 2049 | 0xffff, /* dst_mask */ | |
| 2050 | FALSE), /* pcrel_offset */ | |
| 2051 | ||
| 2052 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
| 2053 | HOWTO (R_PPC64_TPREL16_HIGH, | |
| 2054 | 16, /* rightshift */ | |
| 2055 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2056 | 16, /* bitsize */ | |
| 2057 | FALSE, /* pc_relative */ | |
| 2058 | 0, /* bitpos */ | |
| 2059 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2060 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2061 | "R_PPC64_TPREL16_HIGH", /* name */ | |
| 2062 | FALSE, /* partial_inplace */ | |
| 2063 | 0, /* src_mask */ | |
| 2064 | 0xffff, /* dst_mask */ | |
| 2065 | FALSE), /* pcrel_offset */ | |
| 2066 | ||
| 2067 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
| 2068 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
| 2069 | 16, /* rightshift */ | |
| 2070 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2071 | 16, /* bitsize */ | |
| 2072 | FALSE, /* pc_relative */ | |
| 2073 | 0, /* bitpos */ | |
| 2074 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2075 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2076 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
| 2077 | FALSE, /* partial_inplace */ | |
| 2078 | 0, /* src_mask */ | |
| 2079 | 0xffff, /* dst_mask */ | |
| 2080 | FALSE), /* pcrel_offset */ | |
| 2081 | ||
| 5bd4f169 AM |
2082 | /* GNU extension to record C++ vtable hierarchy. */ |
| 2083 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
| 2084 | 0, /* rightshift */ | |
| 2085 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2086 | 0, /* bitsize */ | |
| b34976b6 | 2087 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2088 | 0, /* bitpos */ |
| 2089 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2090 | NULL, /* special_function */ | |
| 2091 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
| b34976b6 | 2092 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2093 | 0, /* src_mask */ |
| 2094 | 0, /* dst_mask */ | |
| b34976b6 | 2095 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2096 | |
| 2097 | /* GNU extension to record C++ vtable member usage. */ | |
| 2098 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
| 2099 | 0, /* rightshift */ | |
| 2100 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2101 | 0, /* bitsize */ | |
| b34976b6 | 2102 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2103 | 0, /* bitpos */ |
| 2104 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2105 | NULL, /* special_function */ | |
| 2106 | "R_PPC64_GNU_VTENTRY", /* name */ | |
| b34976b6 | 2107 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2108 | 0, /* src_mask */ |
| 2109 | 0, /* dst_mask */ | |
| b34976b6 | 2110 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2111 | }; |
| 2112 | ||
| 2113 | \f | |
| 2114 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
| 2115 | be done. */ | |
| 2116 | ||
| 2117 | static void | |
| 4ce794b7 | 2118 | ppc_howto_init (void) |
| 5bd4f169 AM |
2119 | { |
| 2120 | unsigned int i, type; | |
| 2121 | ||
| 2122 | for (i = 0; | |
| 2123 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2124 | i++) | |
| 2125 | { | |
| 2126 | type = ppc64_elf_howto_raw[i].type; | |
| 2127 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
| 2128 | / sizeof (ppc64_elf_howto_table[0]))); | |
| 2129 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
| 2130 | } | |
| 2131 | } | |
| 2132 | ||
| 2133 | static reloc_howto_type * | |
| 4ce794b7 AM |
2134 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 2135 | bfd_reloc_code_real_type code) | |
| 5bd4f169 | 2136 | { |
| 411e1bfb | 2137 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
| 5bd4f169 AM |
2138 | |
| 2139 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 2140 | /* Initialize howto table if needed. */ | |
| 2141 | ppc_howto_init (); | |
| 2142 | ||
| 4ce794b7 | 2143 | switch (code) |
| 5bd4f169 AM |
2144 | { |
| 2145 | default: | |
| 4ce794b7 | 2146 | return NULL; |
| 5bd4f169 | 2147 | |
| 411e1bfb AM |
2148 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
| 2149 | break; | |
| 2150 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
| 2151 | break; | |
| 2152 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
| 2153 | break; | |
| 2154 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
| 2155 | break; | |
| 2156 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
| 2157 | break; | |
| 2158 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
| 2159 | break; | |
| f9c6b907 AM |
2160 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
| 2161 | break; | |
| 411e1bfb | 2162 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
| 5bd4f169 | 2163 | break; |
| f9c6b907 AM |
2164 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
| 2165 | break; | |
| 411e1bfb | 2166 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
| 5bd4f169 | 2167 | break; |
| 411e1bfb | 2168 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
| 5bd4f169 | 2169 | break; |
| 411e1bfb | 2170 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
| 5bd4f169 | 2171 | break; |
| 411e1bfb | 2172 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
| 5bd4f169 | 2173 | break; |
| 411e1bfb | 2174 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
| 5bd4f169 | 2175 | break; |
| 411e1bfb | 2176 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
| 5bd4f169 | 2177 | break; |
| 411e1bfb | 2178 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
| 5bd4f169 | 2179 | break; |
| 411e1bfb | 2180 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
| 5bd4f169 | 2181 | break; |
| 411e1bfb | 2182 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
| 5bd4f169 | 2183 | break; |
| 411e1bfb | 2184 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
| 5bd4f169 | 2185 | break; |
| 411e1bfb | 2186 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
| 5bd4f169 | 2187 | break; |
| 411e1bfb | 2188 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
| 5bd4f169 | 2189 | break; |
| 411e1bfb | 2190 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
| 5bd4f169 | 2191 | break; |
| 411e1bfb | 2192 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
| 5bd4f169 | 2193 | break; |
| 411e1bfb | 2194 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
| 5bd4f169 | 2195 | break; |
| 411e1bfb | 2196 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
| 5bd4f169 | 2197 | break; |
| 411e1bfb | 2198 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
| 5bd4f169 | 2199 | break; |
| 411e1bfb | 2200 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
| 5bd4f169 | 2201 | break; |
| 411e1bfb | 2202 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
| 5bd4f169 | 2203 | break; |
| 411e1bfb | 2204 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
| 5bd4f169 | 2205 | break; |
| 411e1bfb | 2206 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
| 5bd4f169 | 2207 | break; |
| 411e1bfb | 2208 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
| 5bd4f169 | 2209 | break; |
| 411e1bfb | 2210 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
| 5bd4f169 | 2211 | break; |
| 411e1bfb | 2212 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2213 | break; |
| 411e1bfb | 2214 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2215 | break; |
| 411e1bfb | 2216 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
| 5bd4f169 | 2217 | break; |
| 411e1bfb | 2218 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
| 5bd4f169 | 2219 | break; |
| 411e1bfb | 2220 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
| 5bd4f169 | 2221 | break; |
| 411e1bfb | 2222 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
| 5bd4f169 | 2223 | break; |
| 411e1bfb | 2224 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
| 5bd4f169 | 2225 | break; |
| 411e1bfb | 2226 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
| 5bd4f169 | 2227 | break; |
| 411e1bfb | 2228 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
| 5bd4f169 | 2229 | break; |
| 411e1bfb | 2230 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
| 5bd4f169 | 2231 | break; |
| 411e1bfb | 2232 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
| 5bd4f169 | 2233 | break; |
| 411e1bfb | 2234 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
| 5bd4f169 | 2235 | break; |
| 411e1bfb | 2236 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
| 5bd4f169 | 2237 | break; |
| 411e1bfb | 2238 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
| 5bd4f169 | 2239 | break; |
| 411e1bfb | 2240 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
| 5bd4f169 | 2241 | break; |
| 411e1bfb | 2242 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
| 5bd4f169 | 2243 | break; |
| 411e1bfb | 2244 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
| 5bd4f169 | 2245 | break; |
| 411e1bfb | 2246 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
| 5bd4f169 | 2247 | break; |
| 411e1bfb | 2248 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
| 5bd4f169 | 2249 | break; |
| 411e1bfb | 2250 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
| 5bd4f169 | 2251 | break; |
| 411e1bfb | 2252 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
| 5bd4f169 | 2253 | break; |
| 411e1bfb | 2254 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
| 5bd4f169 | 2255 | break; |
| 411e1bfb | 2256 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
| 5bd4f169 | 2257 | break; |
| 411e1bfb | 2258 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
| 5bd4f169 | 2259 | break; |
| 411e1bfb | 2260 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
| 5bd4f169 | 2261 | break; |
| 411e1bfb | 2262 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
| 5bd4f169 | 2263 | break; |
| 411e1bfb | 2264 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
| 5bd4f169 | 2265 | break; |
| 411e1bfb | 2266 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
| 5bd4f169 | 2267 | break; |
| 411e1bfb | 2268 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
| 5bd4f169 | 2269 | break; |
| 411e1bfb | 2270 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
| 5bd4f169 | 2271 | break; |
| 727fc41e AM |
2272 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
| 2273 | break; | |
| 2274 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
| 2275 | break; | |
| 411e1bfb | 2276 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
| 5bd4f169 | 2277 | break; |
| 411e1bfb | 2278 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
| 5bd4f169 | 2279 | break; |
| 411e1bfb | 2280 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
| 5bd4f169 | 2281 | break; |
| 411e1bfb | 2282 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
| 5bd4f169 | 2283 | break; |
| f9c6b907 AM |
2284 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
| 2285 | break; | |
| 411e1bfb | 2286 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
| 5bd4f169 | 2287 | break; |
| f9c6b907 AM |
2288 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
| 2289 | break; | |
| 411e1bfb | 2290 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
| 5bd4f169 | 2291 | break; |
| 411e1bfb AM |
2292 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
| 2293 | break; | |
| 2294 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
| 2295 | break; | |
| 2296 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
| 2297 | break; | |
| f9c6b907 AM |
2298 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
| 2299 | break; | |
| 411e1bfb AM |
2300 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
| 2301 | break; | |
| f9c6b907 AM |
2302 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
| 2303 | break; | |
| 411e1bfb AM |
2304 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
| 2305 | break; | |
| 2306 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
| 2307 | break; | |
| 2308 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
| 2309 | break; | |
| 2310 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
| 2311 | break; | |
| 2312 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
| 2313 | break; | |
| 2314 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
| 2315 | break; | |
| 2316 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
| 2317 | break; | |
| 2318 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
| 2319 | break; | |
| 2320 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
| 2321 | break; | |
| 2322 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
| 2323 | break; | |
| 2324 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
| 2325 | break; | |
| 2326 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
| 2327 | break; | |
| 2328 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
| 2329 | break; | |
| 2330 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
| 2331 | break; | |
| 2332 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
| 2333 | break; | |
| 2334 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
| 2335 | break; | |
| 2336 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
| 2337 | break; | |
| 2338 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
| 2339 | break; | |
| 2340 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
| 2341 | break; | |
| 2342 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
| 2343 | break; | |
| 2344 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
| 2345 | break; | |
| 2346 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
| 2347 | break; | |
| 2348 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
| 2349 | break; | |
| 2350 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
| 2351 | break; | |
| 2352 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
| 2353 | break; | |
| 2354 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
| 2355 | break; | |
| 2356 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
| 2357 | break; | |
| 2358 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
| 2359 | break; | |
| 2360 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
| 2361 | break; | |
| 25f23106 AM |
2362 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
| 2363 | break; | |
| 2364 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
| 2365 | break; | |
| 2366 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
| 2367 | break; | |
| 2368 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
| 2369 | break; | |
| 411e1bfb AM |
2370 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
| 2371 | break; | |
| 2372 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
| 5bd4f169 AM |
2373 | break; |
| 2374 | } | |
| 2375 | ||
| 4ce794b7 | 2376 | return ppc64_elf_howto_table[r]; |
| 5bd4f169 AM |
2377 | }; |
| 2378 | ||
| 157090f7 AM |
2379 | static reloc_howto_type * |
| 2380 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
| 2381 | const char *r_name) | |
| 2382 | { | |
| 2383 | unsigned int i; | |
| 2384 | ||
| 2385 | for (i = 0; | |
| 2386 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2387 | i++) | |
| 2388 | if (ppc64_elf_howto_raw[i].name != NULL | |
| 2389 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
| 2390 | return &ppc64_elf_howto_raw[i]; | |
| 2391 | ||
| 2392 | return NULL; | |
| 2393 | } | |
| 2394 | ||
| 5bd4f169 AM |
2395 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
| 2396 | ||
| 2397 | static void | |
| 4ce794b7 AM |
2398 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 2399 | Elf_Internal_Rela *dst) | |
| 5bd4f169 | 2400 | { |
| 65f38f15 AM |
2401 | unsigned int type; |
| 2402 | ||
| ef60b7ff | 2403 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 2404 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
2405 | ppc_howto_init (); |
| 2406 | ||
| 65f38f15 | 2407 | type = ELF64_R_TYPE (dst->r_info); |
| d0fb9a8d JJ |
2408 | if (type >= (sizeof (ppc64_elf_howto_table) |
| 2409 | / sizeof (ppc64_elf_howto_table[0]))) | |
| 2410 | { | |
| 2411 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
| 3ec2b351 NC |
2412 | abfd, (int) type); |
| 2413 | type = R_PPC64_NONE; | |
| d0fb9a8d | 2414 | } |
| 65f38f15 | 2415 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
| 5bd4f169 AM |
2416 | } |
| 2417 | ||
| 04c9666a | 2418 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
| 5bd4f169 AM |
2419 | |
| 2420 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2421 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2422 | void *data, asection *input_section, | |
| 2423 | bfd *output_bfd, char **error_message) | |
| 5bd4f169 | 2424 | { |
| 805fc799 AM |
2425 | /* If this is a relocatable link (output_bfd test tells us), just |
| 2426 | call the generic function. Any adjustment will be done at final | |
| 2427 | link time. */ | |
| 2428 | if (output_bfd != NULL) | |
| cedb70c5 | 2429 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2430 | input_section, output_bfd, error_message); |
| 2431 | ||
| 2432 | /* Adjust the addend for sign extension of the low 16 bits. | |
| 2433 | We won't actually be using the low 16 bits, so trashing them | |
| 2434 | doesn't matter. */ | |
| 2435 | reloc_entry->addend += 0x8000; | |
| 2436 | return bfd_reloc_continue; | |
| 2437 | } | |
| 5bd4f169 | 2438 | |
| 2441e016 AM |
2439 | static bfd_reloc_status_type |
| 2440 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
| 2441 | void *data, asection *input_section, | |
| 2442 | bfd *output_bfd, char **error_message) | |
| 2443 | { | |
| 2444 | if (output_bfd != NULL) | |
| 2445 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
| 2446 | input_section, output_bfd, error_message); | |
| 2447 | ||
| 699733f6 AM |
2448 | if (strcmp (symbol->section->name, ".opd") == 0 |
| 2449 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
| 2441e016 AM |
2450 | { |
| 2451 | bfd_vma dest = opd_entry_value (symbol->section, | |
| 2452 | symbol->value + reloc_entry->addend, | |
| aef36ac1 | 2453 | NULL, NULL, FALSE); |
| 2441e016 AM |
2454 | if (dest != (bfd_vma) -1) |
| 2455 | reloc_entry->addend = dest - (symbol->value | |
| 2456 | + symbol->section->output_section->vma | |
| 2457 | + symbol->section->output_offset); | |
| 2458 | } | |
| 2459 | return bfd_reloc_continue; | |
| 2460 | } | |
| 2461 | ||
| 805fc799 | 2462 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2463 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2464 | void *data, asection *input_section, | |
| 2465 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2466 | { |
| 2467 | long insn; | |
| 04c9666a | 2468 | enum elf_ppc64_reloc_type r_type; |
| 805fc799 | 2469 | bfd_size_type octets; |
| 794e51c0 AM |
2470 | /* Assume 'at' branch hints. */ |
| 2471 | bfd_boolean is_isa_v2 = TRUE; | |
| 805fc799 AM |
2472 | |
| 2473 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2474 | call the generic function. Any adjustment will be done at final | |
| 2475 | link time. */ | |
| 5bd4f169 | 2476 | if (output_bfd != NULL) |
| cedb70c5 | 2477 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2478 | input_section, output_bfd, error_message); |
| 2479 | ||
| 2480 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2481 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2482 | insn &= ~(0x01 << 21); | |
| 4ce794b7 | 2483 | r_type = reloc_entry->howto->type; |
| 805fc799 AM |
2484 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
| 2485 | || r_type == R_PPC64_REL14_BRTAKEN) | |
| cedb70c5 | 2486 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 805fc799 | 2487 | |
| 794e51c0 | 2488 | if (is_isa_v2) |
| 5bd4f169 | 2489 | { |
| 805fc799 AM |
2490 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 2491 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 2492 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 2493 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 2494 | insn |= 0x02 << 21; | |
| 2495 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 2496 | insn |= 0x08 << 21; | |
| 2497 | else | |
| 2441e016 | 2498 | goto out; |
| 5bd4f169 | 2499 | } |
| 805fc799 AM |
2500 | else |
| 2501 | { | |
| 2502 | bfd_vma target = 0; | |
| 2503 | bfd_vma from; | |
| 5bd4f169 | 2504 | |
| 805fc799 AM |
2505 | if (!bfd_is_com_section (symbol->section)) |
| 2506 | target = symbol->value; | |
| 2507 | target += symbol->section->output_section->vma; | |
| 2508 | target += symbol->section->output_offset; | |
| 2509 | target += reloc_entry->addend; | |
| 5bd4f169 | 2510 | |
| 805fc799 AM |
2511 | from = (reloc_entry->address |
| 2512 | + input_section->output_offset | |
| 2513 | + input_section->output_section->vma); | |
| 5bd4f169 | 2514 | |
| 805fc799 AM |
2515 | /* Invert 'y' bit if not the default. */ |
| 2516 | if ((bfd_signed_vma) (target - from) < 0) | |
| 2517 | insn ^= 0x01 << 21; | |
| 2518 | } | |
| 4ce794b7 | 2519 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
| 2441e016 AM |
2520 | out: |
| 2521 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
| 2522 | input_section, output_bfd, error_message); | |
| 805fc799 | 2523 | } |
| 5bd4f169 | 2524 | |
| 805fc799 | 2525 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2526 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2527 | void *data, asection *input_section, | |
| 2528 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2529 | { |
| 2530 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2531 | call the generic function. Any adjustment will be done at final | |
| 2532 | link time. */ | |
| 2533 | if (output_bfd != NULL) | |
| cedb70c5 | 2534 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 | 2535 | input_section, output_bfd, error_message); |
| 5bd4f169 | 2536 | |
| 805fc799 AM |
2537 | /* Subtract the symbol section base address. */ |
| 2538 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 5bd4f169 AM |
2539 | return bfd_reloc_continue; |
| 2540 | } | |
| 2541 | ||
| 805fc799 | 2542 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2543 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2544 | void *data, asection *input_section, | |
| 2545 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2546 | { |
| 2547 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2548 | call the generic function. Any adjustment will be done at final | |
| 2549 | link time. */ | |
| 2550 | if (output_bfd != NULL) | |
| cedb70c5 | 2551 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2552 | input_section, output_bfd, error_message); |
| 2553 | ||
| 2554 | /* Subtract the symbol section base address. */ | |
| 2555 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 2556 | ||
| 2557 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2558 | reloc_entry->addend += 0x8000; | |
| 2559 | return bfd_reloc_continue; | |
| 2560 | } | |
| 2561 | ||
| 2562 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2563 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2564 | void *data, asection *input_section, | |
| 2565 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2566 | { |
| 2567 | bfd_vma TOCstart; | |
| 2568 | ||
| 2569 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2570 | call the generic function. Any adjustment will be done at final | |
| 2571 | link time. */ | |
| 2572 | if (output_bfd != NULL) | |
| cedb70c5 | 2573 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2574 | input_section, output_bfd, error_message); |
| 2575 | ||
| 2576 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2577 | if (TOCstart == 0) | |
| 1c865ab2 | 2578 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2579 | |
| 2580 | /* Subtract the TOC base address. */ | |
| 2581 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2582 | return bfd_reloc_continue; | |
| 2583 | } | |
| 2584 | ||
| 2585 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2586 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2587 | void *data, asection *input_section, | |
| 2588 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2589 | { |
| 2590 | bfd_vma TOCstart; | |
| 2591 | ||
| 2592 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2593 | call the generic function. Any adjustment will be done at final | |
| 2594 | link time. */ | |
| 2595 | if (output_bfd != NULL) | |
| cedb70c5 | 2596 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2597 | input_section, output_bfd, error_message); |
| 2598 | ||
| 2599 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2600 | if (TOCstart == 0) | |
| 1c865ab2 | 2601 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2602 | |
| 2603 | /* Subtract the TOC base address. */ | |
| 2604 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2605 | ||
| 2606 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2607 | reloc_entry->addend += 0x8000; | |
| 2608 | return bfd_reloc_continue; | |
| 2609 | } | |
| 2610 | ||
| 2611 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2612 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2613 | void *data, asection *input_section, | |
| 2614 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2615 | { |
| 2616 | bfd_vma TOCstart; | |
| 2617 | bfd_size_type octets; | |
| 2618 | ||
| 2619 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2620 | call the generic function. Any adjustment will be done at final | |
| 2621 | link time. */ | |
| 2622 | if (output_bfd != NULL) | |
| cedb70c5 | 2623 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2624 | input_section, output_bfd, error_message); |
| 2625 | ||
| 2626 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2627 | if (TOCstart == 0) | |
| 1c865ab2 | 2628 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2629 | |
| 2630 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2631 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
| 2632 | return bfd_reloc_ok; | |
| 2633 | } | |
| 2634 | ||
| 2635 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2636 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2637 | void *data, asection *input_section, | |
| 2638 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2639 | { |
| 2640 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2641 | call the generic function. Any adjustment will be done at final | |
| 2642 | link time. */ | |
| 2643 | if (output_bfd != NULL) | |
| cedb70c5 | 2644 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2645 | input_section, output_bfd, error_message); |
| 2646 | ||
| 2647 | if (error_message != NULL) | |
| 2648 | { | |
| 2649 | static char buf[60]; | |
| 2650 | sprintf (buf, "generic linker can't handle %s", | |
| 2651 | reloc_entry->howto->name); | |
| 2652 | *error_message = buf; | |
| 2653 | } | |
| 2654 | return bfd_reloc_dangerous; | |
| 2655 | } | |
| 2656 | ||
| 927be08e AM |
2657 | /* Track GOT entries needed for a given symbol. We might need more |
| 2658 | than one got entry per symbol. */ | |
| 2659 | struct got_entry | |
| 2660 | { | |
| 2661 | struct got_entry *next; | |
| 2662 | ||
| 2663 | /* The symbol addend that we'll be placing in the GOT. */ | |
| 2664 | bfd_vma addend; | |
| 2665 | ||
| 2666 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
| 2667 | symbol referenced from different input files. This is to support | |
| 2668 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
| 2669 | from one input file to another. After partitioning into TOC groups | |
| 2670 | we merge entries within the group. | |
| 2671 | ||
| 2672 | Point to the BFD owning this GOT entry. */ | |
| 2673 | bfd *owner; | |
| 2674 | ||
| 2675 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
| 2676 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
| f961d9dd | 2677 | unsigned char tls_type; |
| 927be08e AM |
2678 | |
| 2679 | /* Non-zero if got.ent points to real entry. */ | |
| f961d9dd | 2680 | unsigned char is_indirect; |
| 927be08e AM |
2681 | |
| 2682 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
| 2683 | union | |
| 2684 | { | |
| 2685 | bfd_signed_vma refcount; | |
| 2686 | bfd_vma offset; | |
| 2687 | struct got_entry *ent; | |
| 2688 | } got; | |
| 2689 | }; | |
| 2690 | ||
| 2691 | /* The same for PLT. */ | |
| 2692 | struct plt_entry | |
| 2693 | { | |
| 2694 | struct plt_entry *next; | |
| 2695 | ||
| 2696 | bfd_vma addend; | |
| 2697 | ||
| 2698 | union | |
| 2699 | { | |
| 2700 | bfd_signed_vma refcount; | |
| 2701 | bfd_vma offset; | |
| 2702 | } plt; | |
| 2703 | }; | |
| 2704 | ||
| e717da7e AM |
2705 | struct ppc64_elf_obj_tdata |
| 2706 | { | |
| 2707 | struct elf_obj_tdata elf; | |
| 2708 | ||
| 2709 | /* Shortcuts to dynamic linker sections. */ | |
| 2710 | asection *got; | |
| 2711 | asection *relgot; | |
| 2712 | ||
| b3fac117 AM |
2713 | /* Used during garbage collection. We attach global symbols defined |
| 2714 | on removed .opd entries to this section so that the sym is removed. */ | |
| 2715 | asection *deleted_section; | |
| 81688140 | 2716 | |
| 927be08e | 2717 | /* TLS local dynamic got entry handling. Support for multiple GOT |
| e717da7e | 2718 | sections means we potentially need one of these for each input bfd. */ |
| 927be08e | 2719 | struct got_entry tlsld_got; |
| 8860955f | 2720 | |
| 729eabd5 AM |
2721 | union { |
| 2722 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
| 2723 | Elf_Internal_Rela *relocs; | |
| 2724 | ||
| 2725 | /* Section contents. */ | |
| 2726 | bfd_byte *contents; | |
| 2727 | } opd; | |
| d77c8a4b AM |
2728 | |
| 2729 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
| 2730 | the reloc to be in the range -32768 to 32767. */ | |
| 98528052 AM |
2731 | unsigned int has_small_toc_reloc : 1; |
| 2732 | ||
| 560c8763 AM |
2733 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
| 2734 | instruction not one we handle. */ | |
| 2735 | unsigned int unexpected_toc_insn : 1; | |
| e717da7e AM |
2736 | }; |
| 2737 | ||
| 2738 | #define ppc64_elf_tdata(bfd) \ | |
| 2739 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
| 2740 | ||
| 2741 | #define ppc64_tlsld_got(bfd) \ | |
| 2742 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
| 2743 | ||
| 0c8d6e5c AM |
2744 | #define is_ppc64_elf(bfd) \ |
| 2745 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
| 4dfe6ac6 | 2746 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
| 0c8d6e5c | 2747 | |
| e717da7e AM |
2748 | /* Override the generic function because we store some extras. */ |
| 2749 | ||
| 2750 | static bfd_boolean | |
| 2751 | ppc64_elf_mkobject (bfd *abfd) | |
| 2752 | { | |
| 0ffa91dd | 2753 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
| 4dfe6ac6 | 2754 | PPC64_ELF_DATA); |
| e717da7e AM |
2755 | } |
| 2756 | ||
| feee612b AM |
2757 | /* Fix bad default arch selected for a 64 bit input bfd when the |
| 2758 | default is 32 bit. */ | |
| 2759 | ||
| b34976b6 | 2760 | static bfd_boolean |
| 4ce794b7 | 2761 | ppc64_elf_object_p (bfd *abfd) |
| feee612b AM |
2762 | { |
| 2763 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
| 2764 | { | |
| 2765 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
| 2766 | ||
| 2767 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
| 2768 | { | |
| 2769 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
| 2770 | abfd->arch_info = abfd->arch_info->next; | |
| 2771 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
| 2772 | } | |
| 2773 | } | |
| b34976b6 | 2774 | return TRUE; |
| feee612b AM |
2775 | } |
| 2776 | ||
| d37c89e5 AM |
2777 | /* Support for core dump NOTE sections. */ |
| 2778 | ||
| 2779 | static bfd_boolean | |
| 2780 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
| 2781 | { | |
| eea6121a | 2782 | size_t offset, size; |
| d37c89e5 AM |
2783 | |
| 2784 | if (note->descsz != 504) | |
| 2785 | return FALSE; | |
| 2786 | ||
| 2787 | /* pr_cursig */ | |
| 228e534f | 2788 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| d37c89e5 AM |
2789 | |
| 2790 | /* pr_pid */ | |
| 228e534f | 2791 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
| d37c89e5 AM |
2792 | |
| 2793 | /* pr_reg */ | |
| 2794 | offset = 112; | |
| eea6121a | 2795 | size = 384; |
| d37c89e5 AM |
2796 | |
| 2797 | /* Make a ".reg/999" section. */ | |
| 2798 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
| eea6121a | 2799 | size, note->descpos + offset); |
| d37c89e5 AM |
2800 | } |
| 2801 | ||
| 2802 | static bfd_boolean | |
| 2803 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
| 2804 | { | |
| 2805 | if (note->descsz != 136) | |
| 2806 | return FALSE; | |
| 2807 | ||
| 228e534f | 2808 | elf_tdata (abfd)->core->pid |
| bc989cdc | 2809 | = bfd_get_32 (abfd, note->descdata + 24); |
| 228e534f | 2810 | elf_tdata (abfd)->core->program |
| d37c89e5 | 2811 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
| 228e534f | 2812 | elf_tdata (abfd)->core->command |
| d37c89e5 AM |
2813 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
| 2814 | ||
| 2815 | return TRUE; | |
| 2816 | } | |
| 2817 | ||
| 183e98be AM |
2818 | static char * |
| 2819 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
| 2820 | ...) | |
| 2821 | { | |
| 2822 | switch (note_type) | |
| 2823 | { | |
| 2824 | default: | |
| 2825 | return NULL; | |
| 2826 | ||
| 2827 | case NT_PRPSINFO: | |
| 2828 | { | |
| 2829 | char data[136]; | |
| 2830 | va_list ap; | |
| 2831 | ||
| 2832 | va_start (ap, note_type); | |
| 75cd47ed | 2833 | memset (data, 0, sizeof (data)); |
| 183e98be AM |
2834 | strncpy (data + 40, va_arg (ap, const char *), 16); |
| 2835 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
| 2836 | va_end (ap); | |
| 2837 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2838 | "CORE", note_type, data, sizeof (data)); | |
| 2839 | } | |
| 2840 | ||
| 2841 | case NT_PRSTATUS: | |
| 2842 | { | |
| 2843 | char data[504]; | |
| 2844 | va_list ap; | |
| 2845 | long pid; | |
| 2846 | int cursig; | |
| 2847 | const void *greg; | |
| 2848 | ||
| 2849 | va_start (ap, note_type); | |
| 2850 | memset (data, 0, 112); | |
| 2851 | pid = va_arg (ap, long); | |
| 2852 | bfd_put_32 (abfd, pid, data + 32); | |
| 2853 | cursig = va_arg (ap, int); | |
| 2854 | bfd_put_16 (abfd, cursig, data + 12); | |
| 2855 | greg = va_arg (ap, const void *); | |
| 2856 | memcpy (data + 112, greg, 384); | |
| 2857 | memset (data + 496, 0, 8); | |
| 2858 | va_end (ap); | |
| 2859 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2860 | "CORE", note_type, data, sizeof (data)); | |
| 2861 | } | |
| 2862 | } | |
| 2863 | } | |
| 2864 | ||
| 5d35169e AM |
2865 | /* Add extra PPC sections. */ |
| 2866 | ||
| b35d266b | 2867 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
| 7f4d3958 | 2868 | { |
| 0112cd26 NC |
2869 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
| 2870 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2871 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2872 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2873 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2874 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2875 | { NULL, 0, 0, 0, 0 } | |
| 5d35169e AM |
2876 | }; |
| 2877 | ||
| 7c8fe5c4 AM |
2878 | enum _ppc64_sec_type { |
| 2879 | sec_normal = 0, | |
| 2880 | sec_opd = 1, | |
| 2881 | sec_toc = 2 | |
| 2882 | }; | |
| 2883 | ||
| f0abc2a1 AM |
2884 | struct _ppc64_elf_section_data |
| 2885 | { | |
| 2886 | struct bfd_elf_section_data elf; | |
| 411e1bfb | 2887 | |
| f0abc2a1 AM |
2888 | union |
| 2889 | { | |
| 74f0fb50 AM |
2890 | /* An array with one entry for each opd function descriptor. */ |
| 2891 | struct _opd_sec_data | |
| 2892 | { | |
| 2893 | /* Points to the function code section for local opd entries. */ | |
| 2894 | asection **func_sec; | |
| 2895 | ||
| 2896 | /* After editing .opd, adjust references to opd local syms. */ | |
| 2897 | long *adjust; | |
| 2898 | } opd; | |
| 7c8fe5c4 | 2899 | |
| 3a71aa26 AM |
2900 | /* An array for toc sections, indexed by offset/8. */ |
| 2901 | struct _toc_sec_data | |
| 2902 | { | |
| 2903 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
| 2904 | unsigned *symndx; | |
| 2905 | ||
| 2906 | /* And the relocation addend. */ | |
| 2907 | bfd_vma *add; | |
| 2908 | } toc; | |
| 7c8fe5c4 AM |
2909 | } u; |
| 2910 | ||
| 2911 | enum _ppc64_sec_type sec_type:2; | |
| 411e1bfb | 2912 | |
| 7c8fe5c4 AM |
2913 | /* Flag set when small branches are detected. Used to |
| 2914 | select suitable defaults for the stub group size. */ | |
| 2915 | unsigned int has_14bit_branch:1; | |
| f0abc2a1 AM |
2916 | }; |
| 2917 | ||
| 2918 | #define ppc64_elf_section_data(sec) \ | |
| 411e1bfb | 2919 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
| f0abc2a1 AM |
2920 | |
| 2921 | static bfd_boolean | |
| 4ce794b7 | 2922 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
| f0abc2a1 | 2923 | { |
| f592407e AM |
2924 | if (!sec->used_by_bfd) |
| 2925 | { | |
| 2926 | struct _ppc64_elf_section_data *sdata; | |
| 2927 | bfd_size_type amt = sizeof (*sdata); | |
| f0abc2a1 | 2928 | |
| f592407e AM |
2929 | sdata = bfd_zalloc (abfd, amt); |
| 2930 | if (sdata == NULL) | |
| 2931 | return FALSE; | |
| 2932 | sec->used_by_bfd = sdata; | |
| 2933 | } | |
| f0abc2a1 AM |
2934 | |
| 2935 | return _bfd_elf_new_section_hook (abfd, sec); | |
| 2936 | } | |
| 4025353c | 2937 | |
| 74f0fb50 | 2938 | static struct _opd_sec_data * |
| 4025353c AM |
2939 | get_opd_info (asection * sec) |
| 2940 | { | |
| 2941 | if (sec != NULL | |
| 2942 | && ppc64_elf_section_data (sec) != NULL | |
| 7c8fe5c4 | 2943 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
| 74f0fb50 | 2944 | return &ppc64_elf_section_data (sec)->u.opd; |
| 4025353c AM |
2945 | return NULL; |
| 2946 | } | |
| ee67d69a AM |
2947 | |
| 2948 | static inline int | |
| 2949 | abiversion (bfd *abfd) | |
| 2950 | { | |
| 2951 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
| 2952 | } | |
| 2953 | ||
| 2954 | static inline void | |
| 2955 | set_abiversion (bfd *abfd, int ver) | |
| 2956 | { | |
| 2957 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
| 2958 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
| 2959 | } | |
| 90e3cdf2 JJ |
2960 | \f |
| 2961 | /* Parameters for the qsort hook. */ | |
| 90e3cdf2 JJ |
2962 | static bfd_boolean synthetic_relocatable; |
| 2963 | ||
| 699733f6 | 2964 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
| 90e3cdf2 JJ |
2965 | |
| 2966 | static int | |
| 2967 | compare_symbols (const void *ap, const void *bp) | |
| 2968 | { | |
| 2969 | const asymbol *a = * (const asymbol **) ap; | |
| 2970 | const asymbol *b = * (const asymbol **) bp; | |
| 2971 | ||
| 699733f6 AM |
2972 | /* Section symbols first. */ |
| 2973 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
| 90e3cdf2 | 2974 | return -1; |
| 699733f6 | 2975 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
| 90e3cdf2 JJ |
2976 | return 1; |
| 2977 | ||
| 699733f6 | 2978 | /* then .opd symbols. */ |
| ffcfec52 AM |
2979 | if (strcmp (a->section->name, ".opd") == 0 |
| 2980 | && strcmp (b->section->name, ".opd") != 0) | |
| 90e3cdf2 | 2981 | return -1; |
| ffcfec52 AM |
2982 | if (strcmp (a->section->name, ".opd") != 0 |
| 2983 | && strcmp (b->section->name, ".opd") == 0) | |
| 90e3cdf2 JJ |
2984 | return 1; |
| 2985 | ||
| 699733f6 | 2986 | /* then other code symbols. */ |
| 90e3cdf2 JJ |
2987 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
| 2988 | == (SEC_CODE | SEC_ALLOC) | |
| 2989 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2990 | != (SEC_CODE | SEC_ALLOC)) | |
| 2991 | return -1; | |
| 2992 | ||
| 2993 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2994 | != (SEC_CODE | SEC_ALLOC) | |
| 2995 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2996 | == (SEC_CODE | SEC_ALLOC)) | |
| 2997 | return 1; | |
| 2998 | ||
| 2999 | if (synthetic_relocatable) | |
| 3000 | { | |
| 3001 | if (a->section->id < b->section->id) | |
| 3002 | return -1; | |
| 3003 | ||
| 3004 | if (a->section->id > b->section->id) | |
| 3005 | return 1; | |
| 3006 | } | |
| 3007 | ||
| 3008 | if (a->value + a->section->vma < b->value + b->section->vma) | |
| 3009 | return -1; | |
| 3010 | ||
| 3011 | if (a->value + a->section->vma > b->value + b->section->vma) | |
| 3012 | return 1; | |
| 3013 | ||
| 4d35a0aa AM |
3014 | /* For syms with the same value, prefer strong dynamic global function |
| 3015 | syms over other syms. */ | |
| 3016 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
| 3017 | return -1; | |
| 3018 | ||
| 3019 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
| 3020 | return 1; | |
| 3021 | ||
| 3022 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
| 3023 | return -1; | |
| 3024 | ||
| 3025 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
| 3026 | return 1; | |
| 3027 | ||
| 3028 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
| 3029 | return -1; | |
| 3030 | ||
| 3031 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
| 3032 | return 1; | |
| 3033 | ||
| 3034 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
| 3035 | return -1; | |
| 3036 | ||
| 3037 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
| 3038 | return 1; | |
| 3039 | ||
| 90e3cdf2 JJ |
3040 | return 0; |
| 3041 | } | |
| 3042 | ||
| 699733f6 | 3043 | /* Search SYMS for a symbol of the given VALUE. */ |
| 90e3cdf2 | 3044 | |
| 699733f6 AM |
3045 | static asymbol * |
| 3046 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
| 90e3cdf2 | 3047 | { |
| 699733f6 | 3048 | long mid; |
| 90e3cdf2 | 3049 | |
| 699733f6 AM |
3050 | if (id == -1) |
| 3051 | { | |
| 3052 | while (lo < hi) | |
| 3053 | { | |
| 3054 | mid = (lo + hi) >> 1; | |
| 3055 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
| 3056 | lo = mid + 1; | |
| 3057 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
| 3058 | hi = mid; | |
| 3059 | else | |
| 3060 | return syms[mid]; | |
| 3061 | } | |
| 3062 | } | |
| 3063 | else | |
| 3064 | { | |
| 3065 | while (lo < hi) | |
| 3066 | { | |
| 3067 | mid = (lo + hi) >> 1; | |
| 3068 | if (syms[mid]->section->id < id) | |
| 3069 | lo = mid + 1; | |
| 3070 | else if (syms[mid]->section->id > id) | |
| 3071 | hi = mid; | |
| 3072 | else if (syms[mid]->value < value) | |
| 3073 | lo = mid + 1; | |
| 3074 | else if (syms[mid]->value > value) | |
| 3075 | hi = mid; | |
| 3076 | else | |
| 3077 | return syms[mid]; | |
| 3078 | } | |
| 3079 | } | |
| 3080 | return NULL; | |
| 90e3cdf2 JJ |
3081 | } |
| 3082 | ||
| 468392fb AM |
3083 | static bfd_boolean |
| 3084 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
| 3085 | { | |
| 3086 | bfd_vma vma = *(bfd_vma *) ptr; | |
| 3087 | return ((section->flags & SEC_ALLOC) != 0 | |
| 3088 | && section->vma <= vma | |
| 3089 | && vma < section->vma + section->size); | |
| 3090 | } | |
| 3091 | ||
| 699733f6 | 3092 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
| 468392fb | 3093 | entry syms. Also generate @plt symbols for the glink branch table. */ |
| 90e3cdf2 JJ |
3094 | |
| 3095 | static long | |
| a7535cf3 AM |
3096 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
| 3097 | long static_count, asymbol **static_syms, | |
| 3098 | long dyn_count, asymbol **dyn_syms, | |
| c9727e01 | 3099 | asymbol **ret) |
| 90e3cdf2 JJ |
3100 | { |
| 3101 | asymbol *s; | |
| 699733f6 AM |
3102 | long i; |
| 3103 | long count; | |
| 90e3cdf2 | 3104 | char *names; |
| a7535cf3 | 3105 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
| ee67d69a | 3106 | asection *opd = NULL; |
| 90e3cdf2 | 3107 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
| a7535cf3 | 3108 | asymbol **syms; |
| ee67d69a | 3109 | int abi = abiversion (abfd); |
| 90e3cdf2 JJ |
3110 | |
| 3111 | *ret = NULL; | |
| 3112 | ||
| ee67d69a AM |
3113 | if (abi < 2) |
| 3114 | { | |
| 3115 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
| 3116 | if (opd == NULL && abi == 1) | |
| 3117 | return 0; | |
| 3118 | } | |
| 90e3cdf2 | 3119 | |
| a7535cf3 | 3120 | symcount = static_count; |
| c9727e01 | 3121 | if (!relocatable) |
| a7535cf3 | 3122 | symcount += dyn_count; |
| 90e3cdf2 | 3123 | if (symcount == 0) |
| c9727e01 | 3124 | return 0; |
| 90e3cdf2 | 3125 | |
| a7535cf3 AM |
3126 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
| 3127 | if (syms == NULL) | |
| 7356fed5 | 3128 | return -1; |
| a7535cf3 AM |
3129 | |
| 3130 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
| 3131 | { | |
| 3132 | /* Use both symbol tables. */ | |
| 3133 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
| 3134 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
| 3135 | } | |
| 3136 | else if (!relocatable && static_count == 0) | |
| 3137 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
| 3138 | else | |
| 3139 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
| 3140 | ||
| 90e3cdf2 | 3141 | synthetic_relocatable = relocatable; |
| 595da8c5 | 3142 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
| 90e3cdf2 | 3143 | |
| c9727e01 AM |
3144 | if (!relocatable && symcount > 1) |
| 3145 | { | |
| 3146 | long j; | |
| 3147 | /* Trim duplicate syms, since we may have merged the normal and | |
| 3148 | dynamic symbols. Actually, we only care about syms that have | |
| 3b36f7e6 | 3149 | different values, so trim any with the same value. */ |
| c9727e01 AM |
3150 | for (i = 1, j = 1; i < symcount; ++i) |
| 3151 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
| 3152 | != syms[i]->value + syms[i]->section->vma) | |
| 3153 | syms[j++] = syms[i]; | |
| 3154 | symcount = j; | |
| 3155 | } | |
| 3156 | ||
| 699733f6 | 3157 | i = 0; |
| ffcfec52 | 3158 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
| 699733f6 AM |
3159 | ++i; |
| 3160 | codesecsym = i; | |
| 90e3cdf2 | 3161 | |
| 699733f6 AM |
3162 | for (; i < symcount; ++i) |
| 3163 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3164 | != (SEC_CODE | SEC_ALLOC)) | |
| 3165 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3166 | break; | |
| 3167 | codesecsymend = i; | |
| 90e3cdf2 | 3168 | |
| 699733f6 AM |
3169 | for (; i < symcount; ++i) |
| 3170 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3171 | break; | |
| 3172 | secsymend = i; | |
| 90e3cdf2 | 3173 | |
| 699733f6 | 3174 | for (; i < symcount; ++i) |
| ffcfec52 | 3175 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
| 699733f6 AM |
3176 | break; |
| 3177 | opdsymend = i; | |
| 90e3cdf2 | 3178 | |
| 699733f6 AM |
3179 | for (; i < symcount; ++i) |
| 3180 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3181 | != (SEC_CODE | SEC_ALLOC)) | |
| 3182 | break; | |
| 3183 | symcount = i; | |
| 3184 | ||
| c9727e01 | 3185 | count = 0; |
| 90e3cdf2 | 3186 | |
| 699733f6 | 3187 | if (relocatable) |
| 90e3cdf2 | 3188 | { |
| 699733f6 AM |
3189 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 3190 | arelent *r; | |
| 3191 | size_t size; | |
| 3192 | long relcount; | |
| 90e3cdf2 | 3193 | |
| 468392fb AM |
3194 | if (opdsymend == secsymend) |
| 3195 | goto done; | |
| 3196 | ||
| 699733f6 | 3197 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
| 90e3cdf2 | 3198 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
| 7356fed5 | 3199 | if (relcount == 0) |
| c9727e01 | 3200 | goto done; |
| 90e3cdf2 | 3201 | |
| 7356fed5 AM |
3202 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
| 3203 | { | |
| 3204 | count = -1; | |
| 3205 | goto done; | |
| 3206 | } | |
| 3207 | ||
| 699733f6 | 3208 | size = 0; |
| 595da8c5 | 3209 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 699733f6 AM |
3210 | { |
| 3211 | asymbol *sym; | |
| 90e3cdf2 | 3212 | |
| 595da8c5 | 3213 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3214 | && r->address < syms[i]->value + opd->vma) |
| 3215 | ++r; | |
| 90e3cdf2 | 3216 | |
| 595da8c5 | 3217 | if (r == opd->relocation + relcount) |
| 699733f6 | 3218 | break; |
| 90e3cdf2 | 3219 | |
| 699733f6 AM |
3220 | if (r->address != syms[i]->value + opd->vma) |
| 3221 | continue; | |
| 90e3cdf2 | 3222 | |
| 699733f6 AM |
3223 | if (r->howto->type != R_PPC64_ADDR64) |
| 3224 | continue; | |
| 90e3cdf2 | 3225 | |
| 699733f6 AM |
3226 | sym = *r->sym_ptr_ptr; |
| 3227 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3228 | sym->section->id, sym->value + r->addend)) | |
| 3229 | { | |
| 3230 | ++count; | |
| 3231 | size += sizeof (asymbol); | |
| 3232 | size += strlen (syms[i]->name) + 2; | |
| 3233 | } | |
| 3234 | } | |
| 90e3cdf2 | 3235 | |
| 699733f6 AM |
3236 | s = *ret = bfd_malloc (size); |
| 3237 | if (s == NULL) | |
| 3238 | { | |
| 7356fed5 | 3239 | count = -1; |
| c9727e01 | 3240 | goto done; |
| 699733f6 | 3241 | } |
| 90e3cdf2 | 3242 | |
| 699733f6 | 3243 | names = (char *) (s + count); |
| 90e3cdf2 | 3244 | |
| 595da8c5 | 3245 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 90e3cdf2 | 3246 | { |
| 699733f6 | 3247 | asymbol *sym; |
| 90e3cdf2 | 3248 | |
| 595da8c5 | 3249 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3250 | && r->address < syms[i]->value + opd->vma) |
| 3251 | ++r; | |
| 90e3cdf2 | 3252 | |
| 595da8c5 | 3253 | if (r == opd->relocation + relcount) |
| 699733f6 AM |
3254 | break; |
| 3255 | ||
| 3256 | if (r->address != syms[i]->value + opd->vma) | |
| 3257 | continue; | |
| 3258 | ||
| 3259 | if (r->howto->type != R_PPC64_ADDR64) | |
| 3260 | continue; | |
| 90e3cdf2 | 3261 | |
| 699733f6 AM |
3262 | sym = *r->sym_ptr_ptr; |
| 3263 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3264 | sym->section->id, sym->value + r->addend)) | |
| 3265 | { | |
| 3266 | size_t len; | |
| 3267 | ||
| 3268 | *s = *syms[i]; | |
| 6ba2a415 | 3269 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3270 | s->section = sym->section; |
| 3271 | s->value = sym->value + r->addend; | |
| 3272 | s->name = names; | |
| 3273 | *names++ = '.'; | |
| 3274 | len = strlen (syms[i]->name); | |
| 3275 | memcpy (names, syms[i]->name, len + 1); | |
| 3276 | names += len + 1; | |
| 6f610d07 UW |
3277 | /* Have udata.p point back to the original symbol this |
| 3278 | synthetic symbol was derived from. */ | |
| 3279 | s->udata.p = syms[i]; | |
| 699733f6 AM |
3280 | s++; |
| 3281 | } | |
| 3282 | } | |
| 3283 | } | |
| 3284 | else | |
| 90e3cdf2 | 3285 | { |
| 468392fb | 3286 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| ee67d69a | 3287 | bfd_byte *contents = NULL; |
| 699733f6 | 3288 | size_t size; |
| 468392fb AM |
3289 | long plt_count = 0; |
| 3290 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
| 3291 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
| 3292 | arelent *p; | |
| 90e3cdf2 | 3293 | |
| ee67d69a | 3294 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
| 699733f6 | 3295 | { |
| ee67d69a | 3296 | free_contents_and_exit: |
| 699733f6 | 3297 | if (contents) |
| ee67d69a | 3298 | free (contents); |
| 7356fed5 | 3299 | count = -1; |
| c9727e01 | 3300 | goto done; |
| 699733f6 | 3301 | } |
| 90e3cdf2 | 3302 | |
| 699733f6 AM |
3303 | size = 0; |
| 3304 | for (i = secsymend; i < opdsymend; ++i) | |
| 3305 | { | |
| 3306 | bfd_vma ent; | |
| 90e3cdf2 | 3307 | |
| 5ef11c02 AM |
3308 | /* Ignore bogus symbols. */ |
| 3309 | if (syms[i]->value > opd->size - 8) | |
| 3310 | continue; | |
| 3311 | ||
| 699733f6 AM |
3312 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3313 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 3314 | { | |
| 3315 | ++count; | |
| 3316 | size += sizeof (asymbol); | |
| 3317 | size += strlen (syms[i]->name) + 2; | |
| 3318 | } | |
| 3319 | } | |
| 90e3cdf2 | 3320 | |
| 468392fb | 3321 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
| 066ee829 AM |
3322 | if (dyn_count != 0 |
| 3323 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
| 468392fb AM |
3324 | { |
| 3325 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
| 3326 | size_t extdynsize; | |
| 3327 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
| 3328 | ||
| 3329 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
| 3330 | goto free_contents_and_exit; | |
| 3331 | ||
| 3332 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
| 3333 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
| 3334 | ||
| 3335 | extdyn = dynbuf; | |
| 3336 | extdynend = extdyn + dynamic->size; | |
| 3337 | for (; extdyn < extdynend; extdyn += extdynsize) | |
| 3338 | { | |
| 3339 | Elf_Internal_Dyn dyn; | |
| 3340 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
| 3341 | ||
| 3342 | if (dyn.d_tag == DT_NULL) | |
| 3343 | break; | |
| 3344 | ||
| 3345 | if (dyn.d_tag == DT_PPC64_GLINK) | |
| 3346 | { | |
| 3347 | /* The first glink stub starts at offset 32; see comment in | |
| 3348 | ppc64_elf_finish_dynamic_sections. */ | |
| 3349 | glink_vma = dyn.d_un.d_val + 32; | |
| 3350 | /* The .glink section usually does not survive the final | |
| 3351 | link; search for the section (usually .text) where the | |
| 3352 | glink stubs now reside. */ | |
| 3353 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
| 3354 | &glink_vma); | |
| 3355 | break; | |
| 3356 | } | |
| 3357 | } | |
| 3358 | ||
| 3359 | free (dynbuf); | |
| 3360 | } | |
| 3361 | ||
| 3362 | if (glink != NULL) | |
| 3363 | { | |
| 3364 | /* Determine __glink trampoline by reading the relative branch | |
| 3365 | from the first glink stub. */ | |
| 3366 | bfd_byte buf[4]; | |
| 3367 | if (bfd_get_section_contents (abfd, glink, buf, | |
| 3368 | glink_vma + 4 - glink->vma, 4)) | |
| 3369 | { | |
| 3370 | unsigned int insn = bfd_get_32 (abfd, buf); | |
| 3371 | insn ^= B_DOT; | |
| 3372 | if ((insn & ~0x3fffffc) == 0) | |
| 3373 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
| 3374 | } | |
| 3375 | ||
| 3376 | if (resolv_vma) | |
| 3377 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
| 468392fb | 3378 | |
| 066ee829 AM |
3379 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
| 3380 | if (relplt != NULL) | |
| 3381 | { | |
| 3382 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
| 3383 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
| 3384 | goto free_contents_and_exit; | |
| 68ffbac6 | 3385 | |
| 066ee829 AM |
3386 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
| 3387 | size += plt_count * sizeof (asymbol); | |
| 468392fb | 3388 | |
| 066ee829 AM |
3389 | p = relplt->relocation; |
| 3390 | for (i = 0; i < plt_count; i++, p++) | |
| e054468f AM |
3391 | { |
| 3392 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
| 3393 | if (p->addend != 0) | |
| 3394 | size += sizeof ("+0x") - 1 + 16; | |
| 3395 | } | |
| 066ee829 | 3396 | } |
| 468392fb AM |
3397 | } |
| 3398 | ||
| 699733f6 AM |
3399 | s = *ret = bfd_malloc (size); |
| 3400 | if (s == NULL) | |
| 7356fed5 | 3401 | goto free_contents_and_exit; |
| 90e3cdf2 | 3402 | |
| 468392fb | 3403 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
| 90e3cdf2 | 3404 | |
| 699733f6 | 3405 | for (i = secsymend; i < opdsymend; ++i) |
| 90e3cdf2 | 3406 | { |
| 699733f6 | 3407 | bfd_vma ent; |
| 90e3cdf2 | 3408 | |
| 5ef11c02 AM |
3409 | if (syms[i]->value > opd->size - 8) |
| 3410 | continue; | |
| 3411 | ||
| 699733f6 AM |
3412 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3413 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 90e3cdf2 | 3414 | { |
| c9727e01 | 3415 | long lo, hi; |
| 699733f6 | 3416 | size_t len; |
| c9727e01 | 3417 | asection *sec = abfd->sections; |
| 90e3cdf2 | 3418 | |
| 699733f6 AM |
3419 | *s = *syms[i]; |
| 3420 | lo = codesecsym; | |
| 3421 | hi = codesecsymend; | |
| 3422 | while (lo < hi) | |
| 3423 | { | |
| c9727e01 | 3424 | long mid = (lo + hi) >> 1; |
| 699733f6 AM |
3425 | if (syms[mid]->section->vma < ent) |
| 3426 | lo = mid + 1; | |
| 3427 | else if (syms[mid]->section->vma > ent) | |
| 3428 | hi = mid; | |
| 3429 | else | |
| c9727e01 AM |
3430 | { |
| 3431 | sec = syms[mid]->section; | |
| 3432 | break; | |
| 3433 | } | |
| 699733f6 AM |
3434 | } |
| 3435 | ||
| c9727e01 | 3436 | if (lo >= hi && lo > codesecsym) |
| 699733f6 | 3437 | sec = syms[lo - 1]->section; |
| 699733f6 AM |
3438 | |
| 3439 | for (; sec != NULL; sec = sec->next) | |
| 3440 | { | |
| 3441 | if (sec->vma > ent) | |
| 3442 | break; | |
| 63524580 JK |
3443 | /* SEC_LOAD may not be set if SEC is from a separate debug |
| 3444 | info file. */ | |
| 3445 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 699733f6 AM |
3446 | break; |
| 3447 | if ((sec->flags & SEC_CODE) != 0) | |
| 3448 | s->section = sec; | |
| 3449 | } | |
| 6ba2a415 | 3450 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3451 | s->value = ent - s->section->vma; |
| 3452 | s->name = names; | |
| 3453 | *names++ = '.'; | |
| 3454 | len = strlen (syms[i]->name); | |
| 3455 | memcpy (names, syms[i]->name, len + 1); | |
| 3456 | names += len + 1; | |
| 6f610d07 UW |
3457 | /* Have udata.p point back to the original symbol this |
| 3458 | synthetic symbol was derived from. */ | |
| 3459 | s->udata.p = syms[i]; | |
| 699733f6 | 3460 | s++; |
| 90e3cdf2 | 3461 | } |
| 90e3cdf2 | 3462 | } |
| 699733f6 | 3463 | free (contents); |
| 468392fb AM |
3464 | |
| 3465 | if (glink != NULL && relplt != NULL) | |
| 3466 | { | |
| 3467 | if (resolv_vma) | |
| 3468 | { | |
| 3469 | /* Add a symbol for the main glink trampoline. */ | |
| 86a4952b | 3470 | memset (s, 0, sizeof *s); |
| 468392fb | 3471 | s->the_bfd = abfd; |
| 6ba2a415 | 3472 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
| 468392fb AM |
3473 | s->section = glink; |
| 3474 | s->value = resolv_vma - glink->vma; | |
| 3475 | s->name = names; | |
| 3476 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
| 3477 | names += sizeof ("__glink_PLTresolve"); | |
| 3478 | s++; | |
| 3479 | count++; | |
| 3480 | } | |
| 3481 | ||
| 3482 | /* FIXME: It would be very much nicer to put sym@plt on the | |
| 3483 | stub rather than on the glink branch table entry. The | |
| 3484 | objdump disassembler would then use a sensible symbol | |
| 3485 | name on plt calls. The difficulty in doing so is | |
| 3486 | a) finding the stubs, and, | |
| 3487 | b) matching stubs against plt entries, and, | |
| 3488 | c) there can be multiple stubs for a given plt entry. | |
| 3489 | ||
| 3490 | Solving (a) could be done by code scanning, but older | |
| 3491 | ppc64 binaries used different stubs to current code. | |
| 3492 | (b) is the tricky one since you need to known the toc | |
| 3493 | pointer for at least one function that uses a pic stub to | |
| 3494 | be able to calculate the plt address referenced. | |
| 3495 | (c) means gdb would need to set multiple breakpoints (or | |
| 3496 | find the glink branch itself) when setting breakpoints | |
| 3497 | for pending shared library loads. */ | |
| 3498 | p = relplt->relocation; | |
| 3499 | for (i = 0; i < plt_count; i++, p++) | |
| 3500 | { | |
| 3501 | size_t len; | |
| 3502 | ||
| 3503 | *s = **p->sym_ptr_ptr; | |
| 3504 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
| 3505 | we are defining a symbol, ensure one of them is set. */ | |
| 3506 | if ((s->flags & BSF_LOCAL) == 0) | |
| 3507 | s->flags |= BSF_GLOBAL; | |
| 6ba2a415 | 3508 | s->flags |= BSF_SYNTHETIC; |
| 468392fb AM |
3509 | s->section = glink; |
| 3510 | s->value = glink_vma - glink->vma; | |
| 3511 | s->name = names; | |
| 3512 | s->udata.p = NULL; | |
| 3513 | len = strlen ((*p->sym_ptr_ptr)->name); | |
| 3514 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
| 3515 | names += len; | |
| e054468f AM |
3516 | if (p->addend != 0) |
| 3517 | { | |
| 3518 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
| 3519 | names += sizeof ("+0x") - 1; | |
| 3520 | bfd_sprintf_vma (abfd, names, p->addend); | |
| 3521 | names += strlen (names); | |
| 3522 | } | |
| 468392fb AM |
3523 | memcpy (names, "@plt", sizeof ("@plt")); |
| 3524 | names += sizeof ("@plt"); | |
| 3525 | s++; | |
| 3526 | glink_vma += 8; | |
| 3527 | if (i >= 0x8000) | |
| 3528 | glink_vma += 4; | |
| 3529 | } | |
| 3530 | count += plt_count; | |
| 3531 | } | |
| 90e3cdf2 JJ |
3532 | } |
| 3533 | ||
| c9727e01 | 3534 | done: |
| a7535cf3 | 3535 | free (syms); |
| 90e3cdf2 JJ |
3536 | return count; |
| 3537 | } | |
| 5bd4f169 | 3538 | \f |
| 65f38f15 AM |
3539 | /* The following functions are specific to the ELF linker, while |
| 3540 | functions above are used generally. Those named ppc64_elf_* are | |
| 3541 | called by the main ELF linker code. They appear in this file more | |
| 3542 | or less in the order in which they are called. eg. | |
| 3543 | ppc64_elf_check_relocs is called early in the link process, | |
| 3544 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
| e86ce104 AM |
3545 | called. |
| 3546 | ||
| 3547 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
| 3548 | functions have both a function code symbol and a function descriptor | |
| 3549 | symbol. A call to foo in a relocatable object file looks like: | |
| 3550 | ||
| 3551 | . .text | |
| 3552 | . x: | |
| 3553 | . bl .foo | |
| 3554 | . nop | |
| 3555 | ||
| 3556 | The function definition in another object file might be: | |
| 3557 | ||
| 3558 | . .section .opd | |
| 3559 | . foo: .quad .foo | |
| 3560 | . .quad .TOC.@tocbase | |
| 3561 | . .quad 0 | |
| 3562 | . | |
| 3563 | . .text | |
| 3564 | . .foo: blr | |
| 3565 | ||
| 3566 | When the linker resolves the call during a static link, the branch | |
| 3567 | unsurprisingly just goes to .foo and the .opd information is unused. | |
| 3568 | If the function definition is in a shared library, things are a little | |
| 3569 | different: The call goes via a plt call stub, the opd information gets | |
| 3570 | copied to the plt, and the linker patches the nop. | |
| 3571 | ||
| 3572 | . x: | |
| 3573 | . bl .foo_stub | |
| 3574 | . ld 2,40(1) | |
| 3575 | . | |
| 3576 | . | |
| 3577 | . .foo_stub: | |
| 71a39c98 AM |
3578 | . std 2,40(1) # in practice, the call stub |
| 3579 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
| 3580 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
| 3581 | . ld 12,0(11) | |
| 3582 | . ld 2,8(11) | |
| 3583 | . mtctr 12 | |
| 3584 | . ld 11,16(11) | |
| e86ce104 AM |
3585 | . bctr |
| 3586 | . | |
| 3587 | . .section .plt | |
| 3588 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
| 3589 | ||
| 3590 | The "reloc ()" notation is supposed to indicate that the linker emits | |
| 3591 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
| 3592 | copying. | |
| 3593 | ||
| 3594 | What are the difficulties here? Well, firstly, the relocations | |
| 3595 | examined by the linker in check_relocs are against the function code | |
| 3596 | sym .foo, while the dynamic relocation in the plt is emitted against | |
| 3597 | the function descriptor symbol, foo. Somewhere along the line, we need | |
| 3598 | to carefully copy dynamic link information from one symbol to the other. | |
| 3599 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
| 3600 | symbol as is normal for most other backends. We need foo dynamic | |
| 3601 | instead, at least for an application final link. However, when | |
| 3602 | creating a shared library containing foo, we need to have both symbols | |
| 3603 | dynamic so that references to .foo are satisfied during the early | |
| 3604 | stages of linking. Otherwise the linker might decide to pull in a | |
| 8387904d AM |
3605 | definition from some other object, eg. a static library. |
| 3606 | ||
| 3607 | Update: As of August 2004, we support a new convention. Function | |
| 3608 | calls may use the function descriptor symbol, ie. "bl foo". This | |
| 3609 | behaves exactly as "bl .foo". */ | |
| 65f38f15 | 3610 | |
| 1d483afe | 3611 | /* Of those relocs that might be copied as dynamic relocs, this function |
| 58ac9f71 AM |
3612 | selects those that must be copied when linking a shared library, |
| 3613 | even when the symbol is local. */ | |
| 65f38f15 | 3614 | |
| 1d483afe AM |
3615 | static int |
| 3616 | must_be_dyn_reloc (struct bfd_link_info *info, | |
| 3617 | enum elf_ppc64_reloc_type r_type) | |
| 3618 | { | |
| 3619 | switch (r_type) | |
| 3620 | { | |
| 3621 | default: | |
| 3622 | return 1; | |
| 3623 | ||
| 3624 | case R_PPC64_REL32: | |
| 3625 | case R_PPC64_REL64: | |
| 3626 | case R_PPC64_REL30: | |
| 3627 | return 0; | |
| 3628 | ||
| 3629 | case R_PPC64_TPREL16: | |
| 3630 | case R_PPC64_TPREL16_LO: | |
| 3631 | case R_PPC64_TPREL16_HI: | |
| 3632 | case R_PPC64_TPREL16_HA: | |
| 3633 | case R_PPC64_TPREL16_DS: | |
| 3634 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
3635 | case R_PPC64_TPREL16_HIGH: |
| 3636 | case R_PPC64_TPREL16_HIGHA: | |
| 1d483afe AM |
3637 | case R_PPC64_TPREL16_HIGHER: |
| 3638 | case R_PPC64_TPREL16_HIGHERA: | |
| 3639 | case R_PPC64_TPREL16_HIGHEST: | |
| 3640 | case R_PPC64_TPREL16_HIGHESTA: | |
| 3641 | case R_PPC64_TPREL64: | |
| 3642 | return !info->executable; | |
| 3643 | } | |
| 3644 | } | |
| 65f38f15 | 3645 | |
| f4656909 AM |
3646 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
| 3647 | copying dynamic variables from a shared lib into an app's dynbss | |
| 3648 | section, and instead use a dynamic relocation to point into the | |
| 5d35169e AM |
3649 | shared lib. With code that gcc generates, it's vital that this be |
| 3650 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
| 3651 | the address of a function descriptor, which resides in the .opd | |
| 3652 | section. gcc uses the descriptor directly rather than going via the | |
| 3653 | GOT as some other ABI's do, which means that initialized function | |
| 3654 | pointers must reference the descriptor. Thus, a function pointer | |
| 3655 | initialized to the address of a function in a shared library will | |
| 3656 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
| 4cc11e76 | 3657 | redefines the function descriptor symbol to point to the copy. This |
| 5d35169e AM |
3658 | presents a problem as a plt entry for that function is also |
| 3659 | initialized from the function descriptor symbol and the copy reloc | |
| 3660 | may not be initialized first. */ | |
| a23b6845 | 3661 | #define ELIMINATE_COPY_RELOCS 1 |
| f4656909 | 3662 | |
| 721956f4 | 3663 | /* Section name for stubs is the associated section name plus this |
| 29942be8 NC |
3664 | string. */ |
| 3665 | #define STUB_SUFFIX ".stub" | |
| 721956f4 AM |
3666 | |
| 3667 | /* Linker stubs. | |
| 3668 | ppc_stub_long_branch: | |
| 3669 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
| 3670 | destination, but a 24 bit branch in a stub section will reach. | |
| 3671 | . b dest | |
| 3672 | ||
| 3673 | ppc_stub_plt_branch: | |
| 3674 | Similar to the above, but a 24 bit branch in the stub section won't | |
| 3675 | reach its destination. | |
| 71a39c98 AM |
3676 | . addis %r11,%r2,xxx@toc@ha |
| 3677 | . ld %r12,xxx@toc@l(%r11) | |
| 3678 | . mtctr %r12 | |
| 721956f4 AM |
3679 | . bctr |
| 3680 | ||
| 3681 | ppc_stub_plt_call: | |
| 2c66dc6c AM |
3682 | Used to call a function in a shared library. If it so happens that |
| 3683 | the plt entry referenced crosses a 64k boundary, then an extra | |
| 71a39c98 | 3684 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
| 721956f4 | 3685 | . std %r2,40(%r1) |
| 71a39c98 AM |
3686 | . addis %r11,%r2,xxx@toc@ha |
| 3687 | . ld %r12,xxx+0@toc@l(%r11) | |
| 3688 | . mtctr %r12 | |
| 3689 | . ld %r2,xxx+8@toc@l(%r11) | |
| 3690 | . ld %r11,xxx+16@toc@l(%r11) | |
| 721956f4 | 3691 | . bctr |
| ad8e1ba5 AM |
3692 | |
| 3693 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
| 3694 | code to adjust the value and save r2 to support multiple toc sections. | |
| 3695 | A ppc_stub_long_branch with an r2 offset looks like: | |
| 3696 | . std %r2,40(%r1) | |
| 3697 | . addis %r2,%r2,off@ha | |
| 3698 | . addi %r2,%r2,off@l | |
| 3699 | . b dest | |
| 3700 | ||
| 3701 | A ppc_stub_plt_branch with an r2 offset looks like: | |
| 3702 | . std %r2,40(%r1) | |
| 71a39c98 AM |
3703 | . addis %r11,%r2,xxx@toc@ha |
| 3704 | . ld %r12,xxx@toc@l(%r11) | |
| ad8e1ba5 AM |
3705 | . addis %r2,%r2,off@ha |
| 3706 | . addi %r2,%r2,off@l | |
| 71a39c98 | 3707 | . mtctr %r12 |
| ad8e1ba5 | 3708 | . bctr |
| ac2df442 AM |
3709 | |
| 3710 | In cases where the "addis" instruction would add zero, the "addis" is | |
| 3711 | omitted and following instructions modified slightly in some cases. | |
| 721956f4 AM |
3712 | */ |
| 3713 | ||
| 3714 | enum ppc_stub_type { | |
| 3715 | ppc_stub_none, | |
| 3716 | ppc_stub_long_branch, | |
| ad8e1ba5 | 3717 | ppc_stub_long_branch_r2off, |
| 721956f4 | 3718 | ppc_stub_plt_branch, |
| ad8e1ba5 | 3719 | ppc_stub_plt_branch_r2off, |
| 794e51c0 AM |
3720 | ppc_stub_plt_call, |
| 3721 | ppc_stub_plt_call_r2save | |
| 721956f4 AM |
3722 | }; |
| 3723 | ||
| 3724 | struct ppc_stub_hash_entry { | |
| 3725 | ||
| 3726 | /* Base hash table entry structure. */ | |
| 3727 | struct bfd_hash_entry root; | |
| 3728 | ||
| ad8e1ba5 AM |
3729 | enum ppc_stub_type stub_type; |
| 3730 | ||
| 721956f4 AM |
3731 | /* The stub section. */ |
| 3732 | asection *stub_sec; | |
| 3733 | ||
| 3734 | /* Offset within stub_sec of the beginning of this stub. */ | |
| 3735 | bfd_vma stub_offset; | |
| 3736 | ||
| 3737 | /* Given the symbol's value and its section we can determine its final | |
| 3738 | value when building the stubs (so the stub knows where to jump. */ | |
| 3739 | bfd_vma target_value; | |
| 3740 | asection *target_section; | |
| 3741 | ||
| 721956f4 AM |
3742 | /* The symbol table entry, if any, that this was derived from. */ |
| 3743 | struct ppc_link_hash_entry *h; | |
| e054468f | 3744 | struct plt_entry *plt_ent; |
| 721956f4 AM |
3745 | |
| 3746 | /* Where this stub is being called from, or, in the case of combined | |
| 3747 | stub sections, the first input section in the group. */ | |
| 3748 | asection *id_sec; | |
| 3749 | }; | |
| 3750 | ||
| 3751 | struct ppc_branch_hash_entry { | |
| 3752 | ||
| 3753 | /* Base hash table entry structure. */ | |
| 3754 | struct bfd_hash_entry root; | |
| 3755 | ||
| c456f082 | 3756 | /* Offset within branch lookup table. */ |
| 721956f4 AM |
3757 | unsigned int offset; |
| 3758 | ||
| 3759 | /* Generation marker. */ | |
| 3760 | unsigned int iter; | |
| 3761 | }; | |
| 65f38f15 | 3762 | |
| 19e08130 AM |
3763 | /* Used to track dynamic relocations for local symbols. */ |
| 3764 | struct ppc_dyn_relocs | |
| 3765 | { | |
| 3766 | struct ppc_dyn_relocs *next; | |
| 3767 | ||
| 3768 | /* The input section of the reloc. */ | |
| 3769 | asection *sec; | |
| 3770 | ||
| 3771 | /* Total number of relocs copied for the input section. */ | |
| 3772 | unsigned int count : 31; | |
| 3773 | ||
| 3774 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
| 3775 | unsigned int ifunc : 1; | |
| 3776 | }; | |
| 3777 | ||
| 65f38f15 AM |
3778 | struct ppc_link_hash_entry |
| 3779 | { | |
| 3780 | struct elf_link_hash_entry elf; | |
| 3781 | ||
| b3fac117 AM |
3782 | union { |
| 3783 | /* A pointer to the most recently used stub hash entry against this | |
| 3784 | symbol. */ | |
| 3785 | struct ppc_stub_hash_entry *stub_cache; | |
| 3786 | ||
| 3787 | /* A pointer to the next symbol starting with a '.' */ | |
| 3788 | struct ppc_link_hash_entry *next_dot_sym; | |
| 3789 | } u; | |
| 721956f4 | 3790 | |
| 65f38f15 | 3791 | /* Track dynamic relocs copied for this symbol. */ |
| 6061a67d | 3792 | struct elf_dyn_relocs *dyn_relocs; |
| e86ce104 | 3793 | |
| 721956f4 | 3794 | /* Link between function code and descriptor symbols. */ |
| 34814b9f | 3795 | struct ppc_link_hash_entry *oh; |
| 721956f4 | 3796 | |
| e86ce104 AM |
3797 | /* Flag function code and descriptor symbols. */ |
| 3798 | unsigned int is_func:1; | |
| 3799 | unsigned int is_func_descriptor:1; | |
| 908b32fc | 3800 | unsigned int fake:1; |
| 411e1bfb | 3801 | |
| c5614fa4 AM |
3802 | /* Whether global opd/toc sym has been adjusted or not. |
| 3803 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
| 3804 | should be set for all globals defined in any opd/toc section. */ | |
| 754021d0 AM |
3805 | unsigned int adjust_done:1; |
| 3806 | ||
| 99877b66 AM |
3807 | /* Set if we twiddled this symbol to weak at some stage. */ |
| 3808 | unsigned int was_undefined:1; | |
| 3809 | ||
| 411e1bfb | 3810 | /* Contexts in which symbol is used in the GOT (or TOC). |
| e7b938ca AM |
3811 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
| 3812 | corresponding relocs are encountered during check_relocs. | |
| 3813 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
| 3814 | indicate the corresponding GOT entry type is not needed. | |
| 3815 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
| 3816 | a TPREL one. We use a separate flag rather than setting TPREL | |
| 3817 | just for convenience in distinguishing the two cases. */ | |
| 3818 | #define TLS_GD 1 /* GD reloc. */ | |
| 3819 | #define TLS_LD 2 /* LD reloc. */ | |
| 3820 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
| 3821 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
| 3822 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
| 3823 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
| 3824 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
| e054468f | 3825 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
| f961d9dd | 3826 | unsigned char tls_mask; |
| 65f38f15 AM |
3827 | }; |
| 3828 | ||
| 3829 | /* ppc64 ELF linker hash table. */ | |
| 3830 | ||
| 3831 | struct ppc_link_hash_table | |
| 3832 | { | |
| 3833 | struct elf_link_hash_table elf; | |
| 3834 | ||
| 721956f4 AM |
3835 | /* The stub hash table. */ |
| 3836 | struct bfd_hash_table stub_hash_table; | |
| 3837 | ||
| 3838 | /* Another hash table for plt_branch stubs. */ | |
| 3839 | struct bfd_hash_table branch_hash_table; | |
| 3840 | ||
| 3b421ab3 AM |
3841 | /* Hash table for function prologue tocsave. */ |
| 3842 | htab_t tocsave_htab; | |
| 3843 | ||
| 721956f4 AM |
3844 | /* Linker stub bfd. */ |
| 3845 | bfd *stub_bfd; | |
| 3846 | ||
| 3847 | /* Linker call-backs. */ | |
| 4ce794b7 AM |
3848 | asection * (*add_stub_section) (const char *, asection *); |
| 3849 | void (*layout_sections_again) (void); | |
| 721956f4 AM |
3850 | |
| 3851 | /* Array to keep track of which stub sections have been created, and | |
| 3852 | information on stub grouping. */ | |
| 3853 | struct map_stub { | |
| 3854 | /* This is the section to which stubs in the group will be attached. */ | |
| 3855 | asection *link_sec; | |
| 3856 | /* The stub section. */ | |
| 3857 | asection *stub_sec; | |
| ad8e1ba5 AM |
3858 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
| 3859 | bfd_vma toc_off; | |
| 721956f4 AM |
3860 | } *stub_group; |
| 3861 | ||
| ad8e1ba5 AM |
3862 | /* Temp used when calculating TOC pointers. */ |
| 3863 | bfd_vma toc_curr; | |
| bf102f86 AM |
3864 | bfd *toc_bfd; |
| 3865 | asection *toc_first_sec; | |
| ad8e1ba5 | 3866 | |
| 8f3bab57 AM |
3867 | /* Highest input section id. */ |
| 3868 | int top_id; | |
| 3869 | ||
| 734b6cf9 AM |
3870 | /* Highest output section index. */ |
| 3871 | int top_index; | |
| 3872 | ||
| b3fac117 AM |
3873 | /* Used when adding symbols. */ |
| 3874 | struct ppc_link_hash_entry *dot_syms; | |
| 3875 | ||
| 734b6cf9 AM |
3876 | /* List of input sections for each output section. */ |
| 3877 | asection **input_list; | |
| 721956f4 | 3878 | |
| 65f38f15 | 3879 | /* Short-cuts to get to dynamic linker sections. */ |
| 4ce794b7 | 3880 | asection *got; |
| 4ce794b7 AM |
3881 | asection *plt; |
| 3882 | asection *relplt; | |
| e054468f AM |
3883 | asection *iplt; |
| 3884 | asection *reliplt; | |
| 4ce794b7 AM |
3885 | asection *dynbss; |
| 3886 | asection *relbss; | |
| 3887 | asection *glink; | |
| 82bd7b59 | 3888 | asection *sfpr; |
| 4ce794b7 AM |
3889 | asection *brlt; |
| 3890 | asection *relbrlt; | |
| 58d180e8 | 3891 | asection *glink_eh_frame; |
| ec338859 | 3892 | |
| 8387904d AM |
3893 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
| 3894 | struct ppc_link_hash_entry *tls_get_addr; | |
| 3895 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
| 411e1bfb | 3896 | |
| 927be08e AM |
3897 | /* The size of reliplt used by got entry relocs. */ |
| 3898 | bfd_size_type got_reli_size; | |
| 3899 | ||
| 9b5ecbd0 | 3900 | /* Statistics. */ |
| 794e51c0 | 3901 | unsigned long stub_count[ppc_stub_plt_call_r2save]; |
| 9b5ecbd0 | 3902 | |
| ee75fd95 AM |
3903 | /* Number of stubs against global syms. */ |
| 3904 | unsigned long stub_globals; | |
| 3905 | ||
| 794e51c0 AM |
3906 | /* Alignment of PLT call stubs. */ |
| 3907 | unsigned int plt_stub_align:4; | |
| 3908 | ||
| ee67d69a AM |
3909 | /* Set if we're linking code with function descriptors. */ |
| 3910 | unsigned int opd_abi:1; | |
| 3911 | ||
| 9df0ef5f AM |
3912 | /* Set if PLT call stubs should load r11. */ |
| 3913 | unsigned int plt_static_chain:1; | |
| 3914 | ||
| 794e51c0 AM |
3915 | /* Set if PLT call stubs need a read-read barrier. */ |
| 3916 | unsigned int plt_thread_safe:1; | |
| 3917 | ||
| ad8e1ba5 | 3918 | /* Set if we should emit symbols for stubs. */ |
| 99877b66 | 3919 | unsigned int emit_stub_syms:1; |
| ad8e1ba5 | 3920 | |
| a7f2871e AM |
3921 | /* Set if __tls_get_addr optimization should not be done. */ |
| 3922 | unsigned int no_tls_get_addr_opt:1; | |
| 3923 | ||
| 4c52953f | 3924 | /* Support for multiple toc sections. */ |
| 33c0ec9d | 3925 | unsigned int do_multi_toc:1; |
| 4c52953f | 3926 | unsigned int multi_toc_needed:1; |
| 927be08e | 3927 | unsigned int second_toc_pass:1; |
| 67f0cbdb | 3928 | unsigned int do_toc_opt:1; |
| 4c52953f | 3929 | |
| 5d1634d7 | 3930 | /* Set on error. */ |
| 99877b66 | 3931 | unsigned int stub_error:1; |
| 721956f4 | 3932 | |
| 7d9616d7 | 3933 | /* Temp used by ppc64_elf_process_dot_syms. */ |
| 99877b66 | 3934 | unsigned int twiddled_syms:1; |
| 721956f4 AM |
3935 | |
| 3936 | /* Incremented every time we size stubs. */ | |
| 3937 | unsigned int stub_iteration; | |
| 5d1634d7 | 3938 | |
| 87d72d41 AM |
3939 | /* Small local sym cache. */ |
| 3940 | struct sym_cache sym_cache; | |
| 65f38f15 AM |
3941 | }; |
| 3942 | ||
| 4c52953f AM |
3943 | /* Rename some of the generic section flags to better document how they |
| 3944 | are used here. */ | |
| b0dddeec AM |
3945 | |
| 3946 | /* Nonzero if this section has TLS related relocations. */ | |
| 3947 | #define has_tls_reloc sec_flg0 | |
| 3948 | ||
| 3949 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
| 3950 | #define has_tls_get_addr_call sec_flg1 | |
| 3951 | ||
| 3952 | /* Nonzero if this section has any toc or got relocs. */ | |
| 3953 | #define has_toc_reloc sec_flg2 | |
| 3954 | ||
| 3955 | /* Nonzero if this section has a call to another section that uses | |
| 3956 | the toc or got. */ | |
| d77c8a4b | 3957 | #define makes_toc_func_call sec_flg3 |
| b0dddeec AM |
3958 | |
| 3959 | /* Recursion protection when determining above flag. */ | |
| d77c8a4b | 3960 | #define call_check_in_progress sec_flg4 |
| 70cc837d | 3961 | #define call_check_done sec_flg5 |
| 4c52953f | 3962 | |
| 65f38f15 AM |
3963 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
| 3964 | ||
| 3965 | #define ppc_hash_table(p) \ | |
| 4dfe6ac6 NC |
3966 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 3967 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
| 65f38f15 | 3968 | |
| 721956f4 AM |
3969 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
| 3970 | ((struct ppc_stub_hash_entry *) \ | |
| 3971 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3972 | ||
| 3973 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
| 3974 | ((struct ppc_branch_hash_entry *) \ | |
| 3975 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3976 | ||
| 3977 | /* Create an entry in the stub hash table. */ | |
| 3978 | ||
| 3979 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
3980 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
| 3981 | struct bfd_hash_table *table, | |
| 3982 | const char *string) | |
| 721956f4 AM |
3983 | { |
| 3984 | /* Allocate the structure if it has not already been allocated by a | |
| 3985 | subclass. */ | |
| 3986 | if (entry == NULL) | |
| 3987 | { | |
| 3988 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
| 3989 | if (entry == NULL) | |
| 3990 | return entry; | |
| 3991 | } | |
| 3992 | ||
| 3993 | /* Call the allocation method of the superclass. */ | |
| 3994 | entry = bfd_hash_newfunc (entry, table, string); | |
| 3995 | if (entry != NULL) | |
| 3996 | { | |
| 3997 | struct ppc_stub_hash_entry *eh; | |
| 3998 | ||
| 3999 | /* Initialize the local fields. */ | |
| 4000 | eh = (struct ppc_stub_hash_entry *) entry; | |
| ad8e1ba5 | 4001 | eh->stub_type = ppc_stub_none; |
| 721956f4 AM |
4002 | eh->stub_sec = NULL; |
| 4003 | eh->stub_offset = 0; | |
| 4004 | eh->target_value = 0; | |
| 4005 | eh->target_section = NULL; | |
| 721956f4 AM |
4006 | eh->h = NULL; |
| 4007 | eh->id_sec = NULL; | |
| 4008 | } | |
| 4009 | ||
| 4010 | return entry; | |
| 4011 | } | |
| 4012 | ||
| 4013 | /* Create an entry in the branch hash table. */ | |
| 4014 | ||
| 4015 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4016 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
| 4017 | struct bfd_hash_table *table, | |
| 4018 | const char *string) | |
| 721956f4 AM |
4019 | { |
| 4020 | /* Allocate the structure if it has not already been allocated by a | |
| 4021 | subclass. */ | |
| 4022 | if (entry == NULL) | |
| 4023 | { | |
| 4024 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
| 4025 | if (entry == NULL) | |
| 4026 | return entry; | |
| 4027 | } | |
| 4028 | ||
| 4029 | /* Call the allocation method of the superclass. */ | |
| 4030 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4031 | if (entry != NULL) | |
| 4032 | { | |
| 4033 | struct ppc_branch_hash_entry *eh; | |
| 4034 | ||
| 4035 | /* Initialize the local fields. */ | |
| 4036 | eh = (struct ppc_branch_hash_entry *) entry; | |
| 4037 | eh->offset = 0; | |
| 4038 | eh->iter = 0; | |
| 4039 | } | |
| 4040 | ||
| 4041 | return entry; | |
| 4042 | } | |
| 4043 | ||
| 65f38f15 AM |
4044 | /* Create an entry in a ppc64 ELF linker hash table. */ |
| 4045 | ||
| 4046 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4047 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 4048 | struct bfd_hash_table *table, | |
| 4049 | const char *string) | |
| 65f38f15 AM |
4050 | { |
| 4051 | /* Allocate the structure if it has not already been allocated by a | |
| 4052 | subclass. */ | |
| 4053 | if (entry == NULL) | |
| 4054 | { | |
| 4055 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
| 4056 | if (entry == NULL) | |
| 4057 | return entry; | |
| 4058 | } | |
| 4059 | ||
| 4060 | /* Call the allocation method of the superclass. */ | |
| 4061 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
| 4062 | if (entry != NULL) | |
| 4063 | { | |
| 4064 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
| 4065 | ||
| b3fac117 | 4066 | memset (&eh->u.stub_cache, 0, |
| 908b32fc | 4067 | (sizeof (struct ppc_link_hash_entry) |
| b3fac117 AM |
4068 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
| 4069 | ||
| 4070 | /* When making function calls, old ABI code references function entry | |
| 4071 | points (dot symbols), while new ABI code references the function | |
| 4072 | descriptor symbol. We need to make any combination of reference and | |
| 4073 | definition work together, without breaking archive linking. | |
| 4074 | ||
| 4075 | For a defined function "foo" and an undefined call to "bar": | |
| 4076 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
| 4077 | "bar" too). | |
| 4078 | A new object defines "foo" and references "bar". | |
| 4079 | ||
| 4080 | A new object thus has no problem with its undefined symbols being | |
| 4081 | satisfied by definitions in an old object. On the other hand, the | |
| 4082 | old object won't have ".bar" satisfied by a new object. | |
| 4083 | ||
| 4084 | Keep a list of newly added dot-symbols. */ | |
| 4085 | ||
| 4086 | if (string[0] == '.') | |
| 4087 | { | |
| 4088 | struct ppc_link_hash_table *htab; | |
| 4089 | ||
| 4090 | htab = (struct ppc_link_hash_table *) table; | |
| 4091 | eh->u.next_dot_sym = htab->dot_syms; | |
| 4092 | htab->dot_syms = eh; | |
| 4093 | } | |
| 65f38f15 AM |
4094 | } |
| 4095 | ||
| 4096 | return entry; | |
| 4097 | } | |
| 4098 | ||
| 3b421ab3 AM |
4099 | struct tocsave_entry { |
| 4100 | asection *sec; | |
| 4101 | bfd_vma offset; | |
| 4102 | }; | |
| 4103 | ||
| 4104 | static hashval_t | |
| 4105 | tocsave_htab_hash (const void *p) | |
| 4106 | { | |
| 4107 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
| 4108 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
| 4109 | } | |
| 4110 | ||
| 4111 | static int | |
| 4112 | tocsave_htab_eq (const void *p1, const void *p2) | |
| 4113 | { | |
| 4114 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
| 4115 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
| 4116 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
| 4117 | } | |
| 4118 | ||
| 65f38f15 AM |
4119 | /* Create a ppc64 ELF linker hash table. */ |
| 4120 | ||
| 4121 | static struct bfd_link_hash_table * | |
| 4ce794b7 | 4122 | ppc64_elf_link_hash_table_create (bfd *abfd) |
| 65f38f15 AM |
4123 | { |
| 4124 | struct ppc_link_hash_table *htab; | |
| 4125 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
| 4126 | ||
| 4ce794b7 | 4127 | htab = bfd_zmalloc (amt); |
| 65f38f15 AM |
4128 | if (htab == NULL) |
| 4129 | return NULL; | |
| 4130 | ||
| 66eb6687 | 4131 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
| 4dfe6ac6 NC |
4132 | sizeof (struct ppc_link_hash_entry), |
| 4133 | PPC64_ELF_DATA)) | |
| 65f38f15 | 4134 | { |
| e2d34d7d | 4135 | free (htab); |
| 65f38f15 AM |
4136 | return NULL; |
| 4137 | } | |
| 4138 | ||
| 721956f4 | 4139 | /* Init the stub hash table too. */ |
| 66eb6687 AM |
4140 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
| 4141 | sizeof (struct ppc_stub_hash_entry))) | |
| 721956f4 AM |
4142 | return NULL; |
| 4143 | ||
| 4144 | /* And the branch hash table. */ | |
| 66eb6687 AM |
4145 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
| 4146 | sizeof (struct ppc_branch_hash_entry))) | |
| 721956f4 AM |
4147 | return NULL; |
| 4148 | ||
| 3b421ab3 AM |
4149 | htab->tocsave_htab = htab_try_create (1024, |
| 4150 | tocsave_htab_hash, | |
| 4151 | tocsave_htab_eq, | |
| 4152 | NULL); | |
| 4153 | if (htab->tocsave_htab == NULL) | |
| 4154 | return NULL; | |
| 4155 | ||
| 3254fd24 AM |
4156 | /* Initializing two fields of the union is just cosmetic. We really |
| 4157 | only care about glist, but when compiled on a 32-bit host the | |
| 4158 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
| 4159 | debugger inspection of these fields look nicer. */ | |
| a6aa5195 AM |
4160 | htab->elf.init_got_refcount.refcount = 0; |
| 4161 | htab->elf.init_got_refcount.glist = NULL; | |
| 4162 | htab->elf.init_plt_refcount.refcount = 0; | |
| 4163 | htab->elf.init_plt_refcount.glist = NULL; | |
| 4164 | htab->elf.init_got_offset.offset = 0; | |
| 4165 | htab->elf.init_got_offset.glist = NULL; | |
| 4166 | htab->elf.init_plt_offset.offset = 0; | |
| 4167 | htab->elf.init_plt_offset.glist = NULL; | |
| 3254fd24 | 4168 | |
| 65f38f15 AM |
4169 | return &htab->elf.root; |
| 4170 | } | |
| 4171 | ||
| 721956f4 AM |
4172 | /* Free the derived linker hash table. */ |
| 4173 | ||
| 4174 | static void | |
| 4ce794b7 | 4175 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
| 721956f4 | 4176 | { |
| 3b421ab3 | 4177 | struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash; |
| 721956f4 | 4178 | |
| 3b421ab3 AM |
4179 | bfd_hash_table_free (&htab->stub_hash_table); |
| 4180 | bfd_hash_table_free (&htab->branch_hash_table); | |
| 4181 | if (htab->tocsave_htab) | |
| 4182 | htab_delete (htab->tocsave_htab); | |
| 9f7c3e5e | 4183 | _bfd_elf_link_hash_table_free (hash); |
| 721956f4 AM |
4184 | } |
| 4185 | ||
| bfeb4a28 AM |
4186 | /* Create sections for linker generated code. */ |
| 4187 | ||
| 4188 | static bfd_boolean | |
| 4189 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
| 4190 | { | |
| 4191 | struct ppc_link_hash_table *htab; | |
| 4192 | flagword flags; | |
| 4193 | ||
| 4194 | htab = ppc_hash_table (info); | |
| 4195 | ||
| 4196 | /* Create .sfpr for code to save and restore fp regs. */ | |
| 4197 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
| 4198 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4199 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
| 4200 | flags); | |
| 4201 | if (htab->sfpr == NULL | |
| 4202 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
| 4203 | return FALSE; | |
| 4204 | ||
| 4205 | /* Create .glink for lazy dynamic linking support. */ | |
| 4206 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
| 4207 | flags); | |
| 4208 | if (htab->glink == NULL | |
| 4209 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
| 4210 | return FALSE; | |
| 4211 | ||
| 4212 | if (!info->no_ld_generated_unwind_info) | |
| 4213 | { | |
| 4214 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
| 4215 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4216 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
| 4217 | ".eh_frame", | |
| 4218 | flags); | |
| 4219 | if (htab->glink_eh_frame == NULL | |
| 4220 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
| 4221 | return FALSE; | |
| 4222 | } | |
| 4223 | ||
| 4224 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
| 4225 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
| 4226 | if (htab->iplt == NULL | |
| 4227 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
| 4228 | return FALSE; | |
| 4229 | ||
| 4230 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4231 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4232 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4233 | ".rela.iplt", | |
| 4234 | flags); | |
| 4235 | if (htab->reliplt == NULL | |
| 4236 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
| 4237 | return FALSE; | |
| 4238 | ||
| 4239 | /* Create branch lookup table for plt_branch stubs. */ | |
| 4240 | flags = (SEC_ALLOC | SEC_LOAD | |
| 4241 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4242 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
| 4243 | flags); | |
| 4244 | if (htab->brlt == NULL | |
| 4245 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
| 4246 | return FALSE; | |
| 4247 | ||
| 4248 | if (!info->shared) | |
| 4249 | return TRUE; | |
| 4250 | ||
| 4251 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4252 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4253 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4254 | ".rela.branch_lt", | |
| 4255 | flags); | |
| 4256 | if (htab->relbrlt == NULL | |
| 4257 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
| 4258 | return FALSE; | |
| 4259 | ||
| 4260 | return TRUE; | |
| 4261 | } | |
| 4262 | ||
| e717da7e AM |
4263 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
| 4264 | ||
| bfeb4a28 | 4265 | bfd_boolean |
| e717da7e AM |
4266 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) |
| 4267 | { | |
| 4268 | struct ppc_link_hash_table *htab; | |
| 4269 | ||
| 4270 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
| 4271 | ||
| 4272 | /* Always hook our dynamic sections into the first bfd, which is the | |
| 4273 | linker created stub bfd. This ensures that the GOT header is at | |
| 4274 | the start of the output TOC section. */ | |
| 4275 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 | 4276 | if (htab == NULL) |
| bfeb4a28 | 4277 | return FALSE; |
| e717da7e AM |
4278 | htab->stub_bfd = abfd; |
| 4279 | htab->elf.dynobj = abfd; | |
| bfeb4a28 AM |
4280 | |
| 4281 | if (info->relocatable) | |
| 4282 | return TRUE; | |
| 4283 | ||
| 4284 | return create_linkage_sections (htab->elf.dynobj, info); | |
| e717da7e AM |
4285 | } |
| 4286 | ||
| 721956f4 AM |
4287 | /* Build a name for an entry in the stub hash table. */ |
| 4288 | ||
| 4289 | static char * | |
| 4ce794b7 AM |
4290 | ppc_stub_name (const asection *input_section, |
| 4291 | const asection *sym_sec, | |
| 4292 | const struct ppc_link_hash_entry *h, | |
| 4293 | const Elf_Internal_Rela *rel) | |
| 721956f4 AM |
4294 | { |
| 4295 | char *stub_name; | |
| bcaa2f82 | 4296 | ssize_t len; |
| 721956f4 AM |
4297 | |
| 4298 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
| 4299 | offsets from a sym as a branch target? In fact, we could | |
| 4300 | probably assume the addend is always zero. */ | |
| 4301 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
| 4302 | ||
| 4303 | if (h) | |
| 4304 | { | |
| 4305 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
| 4306 | stub_name = bfd_malloc (len); | |
| 46de2a7c AM |
4307 | if (stub_name == NULL) |
| 4308 | return stub_name; | |
| 4309 | ||
| bcaa2f82 AM |
4310 | len = sprintf (stub_name, "%08x.%s+%x", |
| 4311 | input_section->id & 0xffffffff, | |
| 4312 | h->elf.root.root.string, | |
| 4313 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 AM |
4314 | } |
| 4315 | else | |
| 4316 | { | |
| ad8e1ba5 | 4317 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
| 721956f4 | 4318 | stub_name = bfd_malloc (len); |
| 46de2a7c AM |
4319 | if (stub_name == NULL) |
| 4320 | return stub_name; | |
| 4321 | ||
| bcaa2f82 AM |
4322 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
| 4323 | input_section->id & 0xffffffff, | |
| 4324 | sym_sec->id & 0xffffffff, | |
| 4325 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
| 4326 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 | 4327 | } |
| bcaa2f82 | 4328 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
| ee75fd95 | 4329 | stub_name[len - 2] = 0; |
| 721956f4 AM |
4330 | return stub_name; |
| 4331 | } | |
| 4332 | ||
| 4333 | /* Look up an entry in the stub hash. Stub entries are cached because | |
| 4334 | creating the stub name takes a bit of time. */ | |
| 4335 | ||
| 4336 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4337 | ppc_get_stub_entry (const asection *input_section, |
| 4338 | const asection *sym_sec, | |
| 039b3fef | 4339 | struct ppc_link_hash_entry *h, |
| 4ce794b7 AM |
4340 | const Elf_Internal_Rela *rel, |
| 4341 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
4342 | { |
| 4343 | struct ppc_stub_hash_entry *stub_entry; | |
| 721956f4 AM |
4344 | const asection *id_sec; |
| 4345 | ||
| 4346 | /* If this input section is part of a group of sections sharing one | |
| 4347 | stub section, then use the id of the first section in the group. | |
| 4348 | Stub names need to include a section id, as there may well be | |
| 4349 | more than one stub used to reach say, printf, and we need to | |
| 4350 | distinguish between them. */ | |
| 4351 | id_sec = htab->stub_group[input_section->id].link_sec; | |
| 4352 | ||
| b3fac117 AM |
4353 | if (h != NULL && h->u.stub_cache != NULL |
| 4354 | && h->u.stub_cache->h == h | |
| 4355 | && h->u.stub_cache->id_sec == id_sec) | |
| 721956f4 | 4356 | { |
| b3fac117 | 4357 | stub_entry = h->u.stub_cache; |
| 721956f4 AM |
4358 | } |
| 4359 | else | |
| 4360 | { | |
| 4361 | char *stub_name; | |
| 4362 | ||
| 4363 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
| 4364 | if (stub_name == NULL) | |
| 4365 | return NULL; | |
| 4366 | ||
| 4367 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 4368 | stub_name, FALSE, FALSE); |
| 721956f4 | 4369 | if (h != NULL) |
| b3fac117 | 4370 | h->u.stub_cache = stub_entry; |
| 721956f4 AM |
4371 | |
| 4372 | free (stub_name); | |
| 4373 | } | |
| 4374 | ||
| 4375 | return stub_entry; | |
| 4376 | } | |
| 4377 | ||
| 4378 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
| 4379 | stub entry are initialised. */ | |
| 4380 | ||
| 4381 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4382 | ppc_add_stub (const char *stub_name, |
| 4383 | asection *section, | |
| 25f53a85 | 4384 | struct bfd_link_info *info) |
| 721956f4 | 4385 | { |
| 25f53a85 | 4386 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 721956f4 AM |
4387 | asection *link_sec; |
| 4388 | asection *stub_sec; | |
| 4389 | struct ppc_stub_hash_entry *stub_entry; | |
| 4390 | ||
| 4391 | link_sec = htab->stub_group[section->id].link_sec; | |
| 4392 | stub_sec = htab->stub_group[section->id].stub_sec; | |
| 4393 | if (stub_sec == NULL) | |
| 4394 | { | |
| 4395 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
| 4396 | if (stub_sec == NULL) | |
| 4397 | { | |
| d4c88bbb | 4398 | size_t namelen; |
| 721956f4 AM |
4399 | bfd_size_type len; |
| 4400 | char *s_name; | |
| 4401 | ||
| d4c88bbb AM |
4402 | namelen = strlen (link_sec->name); |
| 4403 | len = namelen + sizeof (STUB_SUFFIX); | |
| 721956f4 AM |
4404 | s_name = bfd_alloc (htab->stub_bfd, len); |
| 4405 | if (s_name == NULL) | |
| 4406 | return NULL; | |
| 4407 | ||
| d4c88bbb AM |
4408 | memcpy (s_name, link_sec->name, namelen); |
| 4409 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
| 721956f4 AM |
4410 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
| 4411 | if (stub_sec == NULL) | |
| 4412 | return NULL; | |
| 4413 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
| 4414 | } | |
| 4415 | htab->stub_group[section->id].stub_sec = stub_sec; | |
| 4416 | } | |
| 4417 | ||
| 4418 | /* Enter this entry into the linker stub hash table. */ | |
| 4419 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
| b34976b6 | 4420 | TRUE, FALSE); |
| 721956f4 AM |
4421 | if (stub_entry == NULL) |
| 4422 | { | |
| 8de848d8 | 4423 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
| 25f53a85 | 4424 | section->owner, stub_name); |
| 721956f4 AM |
4425 | return NULL; |
| 4426 | } | |
| 4427 | ||
| 4428 | stub_entry->stub_sec = stub_sec; | |
| 4429 | stub_entry->stub_offset = 0; | |
| 4430 | stub_entry->id_sec = link_sec; | |
| 4431 | return stub_entry; | |
| 4432 | } | |
| 4433 | ||
| e717da7e AM |
4434 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
| 4435 | not already done. */ | |
| 65f38f15 | 4436 | |
| b34976b6 | 4437 | static bfd_boolean |
| e717da7e | 4438 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 65f38f15 | 4439 | { |
| e717da7e AM |
4440 | asection *got, *relgot; |
| 4441 | flagword flags; | |
| 4442 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 65f38f15 | 4443 | |
| 0c8d6e5c | 4444 | if (!is_ppc64_elf (abfd)) |
| 0ffa91dd | 4445 | return FALSE; |
| 4dfe6ac6 NC |
4446 | if (htab == NULL) |
| 4447 | return FALSE; | |
| 0ffa91dd | 4448 | |
| 4ce794b7 | 4449 | if (!htab->got) |
| e717da7e AM |
4450 | { |
| 4451 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
| 4452 | return FALSE; | |
| 4453 | ||
| 3d4d4302 | 4454 | htab->got = bfd_get_linker_section (htab->elf.dynobj, ".got"); |
| e717da7e AM |
4455 | if (!htab->got) |
| 4456 | abort (); | |
| 4457 | } | |
| 4458 | ||
| 4459 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
| 4460 | | SEC_LINKER_CREATED); | |
| 4461 | ||
| c456f082 | 4462 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
| e717da7e | 4463 | if (!got |
| e717da7e AM |
4464 | || !bfd_set_section_alignment (abfd, got, 3)) |
| 4465 | return FALSE; | |
| 65f38f15 | 4466 | |
| c456f082 AM |
4467 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
| 4468 | flags | SEC_READONLY); | |
| e717da7e | 4469 | if (!relgot |
| e717da7e | 4470 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
| b34976b6 | 4471 | return FALSE; |
| e717da7e AM |
4472 | |
| 4473 | ppc64_elf_tdata (abfd)->got = got; | |
| 4474 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
| b34976b6 | 4475 | return TRUE; |
| 65f38f15 | 4476 | } |
| 5bd4f169 | 4477 | |
| 82bd7b59 | 4478 | /* Create the dynamic sections, and set up shortcuts. */ |
| 5bd4f169 | 4479 | |
| b34976b6 | 4480 | static bfd_boolean |
| 4ce794b7 | 4481 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
| 5bd4f169 | 4482 | { |
| 65f38f15 | 4483 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 4484 | |
| 65f38f15 | 4485 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| b34976b6 | 4486 | return FALSE; |
| 65f38f15 | 4487 | |
| e717da7e | 4488 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
4489 | if (htab == NULL) |
| 4490 | return FALSE; | |
| 4491 | ||
| e717da7e | 4492 | if (!htab->got) |
| 3d4d4302 AM |
4493 | htab->got = bfd_get_linker_section (dynobj, ".got"); |
| 4494 | htab->plt = bfd_get_linker_section (dynobj, ".plt"); | |
| 4495 | htab->relplt = bfd_get_linker_section (dynobj, ".rela.plt"); | |
| 4496 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
| 65f38f15 | 4497 | if (!info->shared) |
| 3d4d4302 | 4498 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
| 65f38f15 | 4499 | |
| e717da7e | 4500 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
| 4ce794b7 | 4501 | || (!info->shared && !htab->relbss)) |
| 65f38f15 AM |
4502 | abort (); |
| 4503 | ||
| b34976b6 | 4504 | return TRUE; |
| 5bd4f169 AM |
4505 | } |
| 4506 | ||
| b31867b6 AM |
4507 | /* Follow indirect and warning symbol links. */ |
| 4508 | ||
| 4509 | static inline struct bfd_link_hash_entry * | |
| 4510 | follow_link (struct bfd_link_hash_entry *h) | |
| 4511 | { | |
| 4512 | while (h->type == bfd_link_hash_indirect | |
| 4513 | || h->type == bfd_link_hash_warning) | |
| 4514 | h = h->u.i.link; | |
| 4515 | return h; | |
| 4516 | } | |
| 4517 | ||
| 4518 | static inline struct elf_link_hash_entry * | |
| 4519 | elf_follow_link (struct elf_link_hash_entry *h) | |
| 4520 | { | |
| 4521 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
| 4522 | } | |
| 4523 | ||
| 4524 | static inline struct ppc_link_hash_entry * | |
| 4525 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
| 4526 | { | |
| 4527 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
| 4528 | } | |
| 4529 | ||
| 40d16e0b AM |
4530 | /* Merge PLT info on FROM with that on TO. */ |
| 4531 | ||
| 4532 | static void | |
| 4533 | move_plt_plist (struct ppc_link_hash_entry *from, | |
| 4534 | struct ppc_link_hash_entry *to) | |
| 4535 | { | |
| 4536 | if (from->elf.plt.plist != NULL) | |
| 4537 | { | |
| 4538 | if (to->elf.plt.plist != NULL) | |
| 4539 | { | |
| 4540 | struct plt_entry **entp; | |
| 4541 | struct plt_entry *ent; | |
| 4542 | ||
| 4543 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
| 4544 | { | |
| 4545 | struct plt_entry *dent; | |
| 4546 | ||
| 4547 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
| 4548 | if (dent->addend == ent->addend) | |
| 4549 | { | |
| 4550 | dent->plt.refcount += ent->plt.refcount; | |
| 4551 | *entp = ent->next; | |
| 4552 | break; | |
| 4553 | } | |
| 4554 | if (dent == NULL) | |
| 4555 | entp = &ent->next; | |
| 4556 | } | |
| 4557 | *entp = to->elf.plt.plist; | |
| 4558 | } | |
| 4559 | ||
| 4560 | to->elf.plt.plist = from->elf.plt.plist; | |
| 4561 | from->elf.plt.plist = NULL; | |
| 4562 | } | |
| 4563 | } | |
| 4564 | ||
| 65f38f15 AM |
4565 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 4566 | ||
| 4567 | static void | |
| fcfa13d2 AM |
4568 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 4569 | struct elf_link_hash_entry *dir, | |
| 4570 | struct elf_link_hash_entry *ind) | |
| 65f38f15 AM |
4571 | { |
| 4572 | struct ppc_link_hash_entry *edir, *eind; | |
| 4573 | ||
| 4574 | edir = (struct ppc_link_hash_entry *) dir; | |
| 4575 | eind = (struct ppc_link_hash_entry *) ind; | |
| 4576 | ||
| c79d6685 AM |
4577 | edir->is_func |= eind->is_func; |
| 4578 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
| 4579 | edir->tls_mask |= eind->tls_mask; | |
| 4580 | if (eind->oh != NULL) | |
| 4581 | edir->oh = ppc_follow_link (eind->oh); | |
| 4582 | ||
| 4583 | /* If called to transfer flags for a weakdef during processing | |
| 4584 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
| 4585 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
| 4586 | if (!(ELIMINATE_COPY_RELOCS | |
| 4587 | && eind->elf.root.type != bfd_link_hash_indirect | |
| 4588 | && edir->elf.dynamic_adjusted)) | |
| 4589 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
| 4590 | ||
| 4591 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
| 4592 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
| 4593 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
| 4594 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
| 4595 | ||
| 411e1bfb | 4596 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
| bbd7ec4a | 4597 | if (eind->dyn_relocs != NULL) |
| 65f38f15 | 4598 | { |
| bbd7ec4a AM |
4599 | if (edir->dyn_relocs != NULL) |
| 4600 | { | |
| 6061a67d AM |
4601 | struct elf_dyn_relocs **pp; |
| 4602 | struct elf_dyn_relocs *p; | |
| bbd7ec4a | 4603 | |
| fcfa13d2 | 4604 | /* Add reloc counts against the indirect sym to the direct sym |
| bbd7ec4a AM |
4605 | list. Merge any entries against the same section. */ |
| 4606 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
| 4607 | { | |
| 6061a67d | 4608 | struct elf_dyn_relocs *q; |
| bbd7ec4a AM |
4609 | |
| 4610 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
| 4611 | if (q->sec == p->sec) | |
| 4612 | { | |
| 4613 | q->pc_count += p->pc_count; | |
| 4614 | q->count += p->count; | |
| 4615 | *pp = p->next; | |
| 4616 | break; | |
| 4617 | } | |
| 4618 | if (q == NULL) | |
| 4619 | pp = &p->next; | |
| 4620 | } | |
| 4621 | *pp = edir->dyn_relocs; | |
| 4622 | } | |
| 4623 | ||
| 65f38f15 AM |
4624 | edir->dyn_relocs = eind->dyn_relocs; |
| 4625 | eind->dyn_relocs = NULL; | |
| 4626 | } | |
| 65f38f15 | 4627 | |
| 68ba6d40 AM |
4628 | /* If we were called to copy over info for a weak sym, that's all. |
| 4629 | You might think dyn_relocs need not be copied over; After all, | |
| 4630 | both syms will be dynamic or both non-dynamic so we're just | |
| 68ffbac6 | 4631 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
| 68ba6d40 AM |
4632 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
| 4633 | dyn_relocs in read-only sections, and it does so on what is the | |
| 4634 | DIR sym here. */ | |
| 4635 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
| 4636 | return; | |
| 4637 | ||
| 81848ca0 AM |
4638 | /* Copy over got entries that we may have already seen to the |
| 4639 | symbol which just became indirect. */ | |
| 411e1bfb AM |
4640 | if (eind->elf.got.glist != NULL) |
| 4641 | { | |
| 4642 | if (edir->elf.got.glist != NULL) | |
| 4643 | { | |
| 4644 | struct got_entry **entp; | |
| 4645 | struct got_entry *ent; | |
| 4646 | ||
| 4647 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
| 4648 | { | |
| 4649 | struct got_entry *dent; | |
| 4650 | ||
| 4651 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
| 4652 | if (dent->addend == ent->addend | |
| e717da7e | 4653 | && dent->owner == ent->owner |
| 411e1bfb AM |
4654 | && dent->tls_type == ent->tls_type) |
| 4655 | { | |
| 4656 | dent->got.refcount += ent->got.refcount; | |
| 4657 | *entp = ent->next; | |
| 4658 | break; | |
| 4659 | } | |
| 4660 | if (dent == NULL) | |
| 4661 | entp = &ent->next; | |
| 4662 | } | |
| 4663 | *entp = edir->elf.got.glist; | |
| 4664 | } | |
| 4665 | ||
| 4666 | edir->elf.got.glist = eind->elf.got.glist; | |
| 4667 | eind->elf.got.glist = NULL; | |
| 4668 | } | |
| 4669 | ||
| 4670 | /* And plt entries. */ | |
| 40d16e0b | 4671 | move_plt_plist (eind, edir); |
| 411e1bfb | 4672 | |
| fcfa13d2 | 4673 | if (eind->elf.dynindx != -1) |
| 411e1bfb | 4674 | { |
| fcfa13d2 AM |
4675 | if (edir->elf.dynindx != -1) |
| 4676 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 4677 | edir->elf.dynstr_index); | |
| 411e1bfb AM |
4678 | edir->elf.dynindx = eind->elf.dynindx; |
| 4679 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
| 4680 | eind->elf.dynindx = -1; | |
| 4681 | eind->elf.dynstr_index = 0; | |
| 4682 | } | |
| 411e1bfb AM |
4683 | } |
| 4684 | ||
| 8387904d AM |
4685 | /* Find the function descriptor hash entry from the given function code |
| 4686 | hash entry FH. Link the entries via their OH fields. */ | |
| 4687 | ||
| 4688 | static struct ppc_link_hash_entry * | |
| b31867b6 | 4689 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
| 8387904d AM |
4690 | { |
| 4691 | struct ppc_link_hash_entry *fdh = fh->oh; | |
| 4692 | ||
| 4693 | if (fdh == NULL) | |
| 4694 | { | |
| 4695 | const char *fd_name = fh->elf.root.root.string + 1; | |
| 4696 | ||
| 4697 | fdh = (struct ppc_link_hash_entry *) | |
| 4698 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
| b31867b6 AM |
4699 | if (fdh == NULL) |
| 4700 | return fdh; | |
| 4701 | ||
| 4702 | fdh->is_func_descriptor = 1; | |
| 4703 | fdh->oh = fh; | |
| 4704 | fh->is_func = 1; | |
| 4705 | fh->oh = fdh; | |
| 8387904d AM |
4706 | } |
| 4707 | ||
| b31867b6 | 4708 | return ppc_follow_link (fdh); |
| 8387904d AM |
4709 | } |
| 4710 | ||
| bb700d78 AM |
4711 | /* Make a fake function descriptor sym for the code sym FH. */ |
| 4712 | ||
| 4713 | static struct ppc_link_hash_entry * | |
| 4714 | make_fdh (struct bfd_link_info *info, | |
| 908b32fc | 4715 | struct ppc_link_hash_entry *fh) |
| bb700d78 AM |
4716 | { |
| 4717 | bfd *abfd; | |
| 4718 | asymbol *newsym; | |
| 4719 | struct bfd_link_hash_entry *bh; | |
| 4720 | struct ppc_link_hash_entry *fdh; | |
| 4721 | ||
| 4722 | abfd = fh->elf.root.u.undef.abfd; | |
| 4723 | newsym = bfd_make_empty_symbol (abfd); | |
| 4724 | newsym->name = fh->elf.root.root.string + 1; | |
| 4725 | newsym->section = bfd_und_section_ptr; | |
| 4726 | newsym->value = 0; | |
| 908b32fc | 4727 | newsym->flags = BSF_WEAK; |
| bb700d78 AM |
4728 | |
| 4729 | bh = NULL; | |
| 4730 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
| 4731 | newsym->flags, newsym->section, | |
| 4732 | newsym->value, NULL, FALSE, FALSE, | |
| 4733 | &bh)) | |
| 4734 | return NULL; | |
| 4735 | ||
| 4736 | fdh = (struct ppc_link_hash_entry *) bh; | |
| 4737 | fdh->elf.non_elf = 0; | |
| 908b32fc AM |
4738 | fdh->fake = 1; |
| 4739 | fdh->is_func_descriptor = 1; | |
| 4740 | fdh->oh = fh; | |
| 4741 | fh->is_func = 1; | |
| 4742 | fh->oh = fdh; | |
| bb700d78 AM |
4743 | return fdh; |
| 4744 | } | |
| 4745 | ||
| 8387904d AM |
4746 | /* Fix function descriptor symbols defined in .opd sections to be |
| 4747 | function type. */ | |
| 555cd476 AM |
4748 | |
| 4749 | static bfd_boolean | |
| c16153ae | 4750 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
| e054468f | 4751 | struct bfd_link_info *info, |
| 555cd476 | 4752 | Elf_Internal_Sym *isym, |
| b3fac117 | 4753 | const char **name ATTRIBUTE_UNUSED, |
| 555cd476 AM |
4754 | flagword *flags ATTRIBUTE_UNUSED, |
| 4755 | asection **sec, | |
| 4756 | bfd_vma *value ATTRIBUTE_UNUSED) | |
| 4757 | { | |
| f64b2e8d NC |
4758 | if ((ibfd->flags & DYNAMIC) == 0 |
| 4759 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
| 4760 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
| 4761 | ||
| e054468f | 4762 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
| c16153ae L |
4763 | { |
| 4764 | if ((ibfd->flags & DYNAMIC) == 0) | |
| f64b2e8d | 4765 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
| c16153ae | 4766 | } |
| e054468f AM |
4767 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
| 4768 | ; | |
| 4769 | else if (*sec != NULL | |
| 70cc837d | 4770 | && strcmp ((*sec)->name, ".opd") == 0) |
| 555cd476 | 4771 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
| 433817dd | 4772 | |
| 555cd476 AM |
4773 | return TRUE; |
| 4774 | } | |
| 4775 | ||
| 8387904d | 4776 | /* This function makes an old ABI object reference to ".bar" cause the |
| 908b32fc AM |
4777 | inclusion of a new ABI object archive that defines "bar". |
| 4778 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
| 4779 | table that might be satisfied by the archive symbols. */ | |
| 8387904d AM |
4780 | |
| 4781 | static struct elf_link_hash_entry * | |
| 4782 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
| 4783 | struct bfd_link_info *info, | |
| 4784 | const char *name) | |
| 4785 | { | |
| 4786 | struct elf_link_hash_entry *h; | |
| 4787 | char *dot_name; | |
| 4788 | size_t len; | |
| 4789 | ||
| 4790 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
| 908b32fc AM |
4791 | if (h != NULL |
| 4792 | /* Don't return this sym if it is a fake function descriptor | |
| 4793 | created by add_symbol_adjust. */ | |
| 4794 | && !(h->root.type == bfd_link_hash_undefweak | |
| 4795 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
| 8387904d AM |
4796 | return h; |
| 4797 | ||
| 4798 | if (name[0] == '.') | |
| 4799 | return h; | |
| 4800 | ||
| 4801 | len = strlen (name); | |
| 4802 | dot_name = bfd_alloc (abfd, len + 2); | |
| 4803 | if (dot_name == NULL) | |
| 4804 | return (struct elf_link_hash_entry *) 0 - 1; | |
| 4805 | dot_name[0] = '.'; | |
| 4806 | memcpy (dot_name + 1, name, len + 1); | |
| 4807 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
| 4808 | bfd_release (abfd, dot_name); | |
| 4809 | return h; | |
| 4810 | } | |
| 4811 | ||
| 4812 | /* This function satisfies all old ABI object references to ".bar" if a | |
| 99877b66 AM |
4813 | new ABI object defines "bar". Well, at least, undefined dot symbols |
| 4814 | are made weak. This stops later archive searches from including an | |
| 4815 | object if we already have a function descriptor definition. It also | |
| 35b0ce59 AM |
4816 | prevents the linker complaining about undefined symbols. |
| 4817 | We also check and correct mismatched symbol visibility here. The | |
| 4818 | most restrictive visibility of the function descriptor and the | |
| 4819 | function entry symbol is used. */ | |
| 8387904d AM |
4820 | |
| 4821 | static bfd_boolean | |
| b3fac117 | 4822 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
| 8387904d | 4823 | { |
| 8387904d AM |
4824 | struct ppc_link_hash_table *htab; |
| 4825 | struct ppc_link_hash_entry *fdh; | |
| 4826 | ||
| b3fac117 | 4827 | if (eh->elf.root.type == bfd_link_hash_indirect) |
| 8387904d AM |
4828 | return TRUE; |
| 4829 | ||
| b3fac117 AM |
4830 | if (eh->elf.root.type == bfd_link_hash_warning) |
| 4831 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 8387904d | 4832 | |
| b3fac117 AM |
4833 | if (eh->elf.root.root.string[0] != '.') |
| 4834 | abort (); | |
| 8387904d | 4835 | |
| b3fac117 | 4836 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
4837 | if (htab == NULL) |
| 4838 | return FALSE; | |
| 4839 | ||
| b31867b6 AM |
4840 | fdh = lookup_fdh (eh, htab); |
| 4841 | if (fdh == NULL) | |
| 4842 | { | |
| 4843 | if (!info->relocatable | |
| 4844 | && (eh->elf.root.type == bfd_link_hash_undefined | |
| 4845 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
| 4846 | && eh->elf.ref_regular) | |
| 4847 | { | |
| 4848 | /* Make an undefweak function descriptor sym, which is enough to | |
| 4849 | pull in an --as-needed shared lib, but won't cause link | |
| 4850 | errors. Archives are handled elsewhere. */ | |
| 4851 | fdh = make_fdh (info, eh); | |
| 4852 | if (fdh == NULL) | |
| 4853 | return FALSE; | |
| 4854 | fdh->elf.ref_regular = 1; | |
| 4855 | } | |
| bb700d78 | 4856 | } |
| b31867b6 | 4857 | else |
| 8387904d | 4858 | { |
| 35b0ce59 AM |
4859 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
| 4860 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
| 4861 | if (entry_vis < descr_vis) | |
| 4862 | fdh->elf.other += entry_vis - descr_vis; | |
| 4863 | else if (entry_vis > descr_vis) | |
| 4864 | eh->elf.other += descr_vis - entry_vis; | |
| 4865 | ||
| e87d886e AM |
4866 | if ((fdh->elf.root.type == bfd_link_hash_defined |
| 4867 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 4868 | && eh->elf.root.type == bfd_link_hash_undefined) | |
| 35b0ce59 AM |
4869 | { |
| 4870 | eh->elf.root.type = bfd_link_hash_undefweak; | |
| 4871 | eh->was_undefined = 1; | |
| 4872 | htab->twiddled_syms = 1; | |
| 4873 | } | |
| 8387904d | 4874 | } |
| 99877b66 | 4875 | |
| 8387904d AM |
4876 | return TRUE; |
| 4877 | } | |
| 4878 | ||
| b3fac117 AM |
4879 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
| 4880 | ||
| 8387904d | 4881 | static bfd_boolean |
| 7d9616d7 | 4882 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
| 8387904d | 4883 | { |
| 99877b66 | 4884 | struct ppc_link_hash_table *htab; |
| b3fac117 | 4885 | struct ppc_link_hash_entry **p, *eh; |
| 433817dd | 4886 | |
| 0c8d6e5c | 4887 | if (!is_ppc64_elf (info->output_bfd)) |
| 35b0ce59 | 4888 | return TRUE; |
| 4dfe6ac6 NC |
4889 | htab = ppc_hash_table (info); |
| 4890 | if (htab == NULL) | |
| 4891 | return FALSE; | |
| 35b0ce59 | 4892 | |
| 0c8d6e5c | 4893 | if (is_ppc64_elf (ibfd)) |
| b3fac117 AM |
4894 | { |
| 4895 | p = &htab->dot_syms; | |
| 4896 | while ((eh = *p) != NULL) | |
| 4897 | { | |
| 4898 | *p = NULL; | |
| 1c865ab2 AM |
4899 | if (&eh->elf == htab->elf.hgot) |
| 4900 | ; | |
| 4901 | else if (htab->elf.hgot == NULL | |
| 4902 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
| 4903 | htab->elf.hgot = &eh->elf; | |
| 4904 | else if (!add_symbol_adjust (eh, info)) | |
| b3fac117 AM |
4905 | return FALSE; |
| 4906 | p = &eh->u.next_dot_sym; | |
| 4907 | } | |
| 4908 | } | |
| 4909 | ||
| 4910 | /* Clear the list for non-ppc64 input files. */ | |
| 4911 | p = &htab->dot_syms; | |
| 4912 | while ((eh = *p) != NULL) | |
| 4913 | { | |
| 4914 | *p = NULL; | |
| 4915 | p = &eh->u.next_dot_sym; | |
| 4916 | } | |
| 99877b66 AM |
4917 | |
| 4918 | /* We need to fix the undefs list for any syms we have twiddled to | |
| 4919 | undef_weak. */ | |
| 4920 | if (htab->twiddled_syms) | |
| 4921 | { | |
| 77cfaee6 | 4922 | bfd_link_repair_undef_list (&htab->elf.root); |
| 99877b66 AM |
4923 | htab->twiddled_syms = 0; |
| 4924 | } | |
| b3fac117 | 4925 | return TRUE; |
| 8387904d AM |
4926 | } |
| 4927 | ||
| 97fed1c9 JJ |
4928 | /* Undo hash table changes when an --as-needed input file is determined |
| 4929 | not to be needed. */ | |
| 4930 | ||
| 4931 | static bfd_boolean | |
| e5034e59 AM |
4932 | ppc64_elf_notice_as_needed (bfd *ibfd, |
| 4933 | struct bfd_link_info *info, | |
| 4934 | enum notice_asneeded_action act) | |
| 97fed1c9 | 4935 | { |
| e5034e59 AM |
4936 | if (act == notice_not_needed) |
| 4937 | { | |
| 4938 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 | 4939 | |
| e5034e59 AM |
4940 | if (htab == NULL) |
| 4941 | return FALSE; | |
| 4dfe6ac6 | 4942 | |
| e5034e59 AM |
4943 | htab->dot_syms = NULL; |
| 4944 | } | |
| 4945 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
| 97fed1c9 JJ |
4946 | } |
| 4947 | ||
| aa374f67 AM |
4948 | /* If --just-symbols against a final linked binary, then assume we need |
| 4949 | toc adjusting stubs when calling functions defined there. */ | |
| 4950 | ||
| 4951 | static void | |
| 4952 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
| 4953 | { | |
| 4954 | if ((sec->flags & SEC_CODE) != 0 | |
| 4955 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
| 4956 | && is_ppc64_elf (sec->owner)) | |
| 4957 | { | |
| 4958 | asection *got = bfd_get_section_by_name (sec->owner, ".got"); | |
| 4959 | if (got != NULL | |
| 4960 | && got->size >= elf_backend_got_header_size | |
| 4961 | && bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
| 4962 | sec->has_toc_reloc = 1; | |
| 4963 | } | |
| 4964 | _bfd_elf_link_just_syms (sec, info); | |
| 4965 | } | |
| 4966 | ||
| e054468f | 4967 | static struct plt_entry ** |
| 4ce794b7 AM |
4968 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
| 4969 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
| 411e1bfb AM |
4970 | { |
| 4971 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
| e054468f | 4972 | struct plt_entry **local_plt; |
| f961d9dd | 4973 | unsigned char *local_got_tls_masks; |
| 411e1bfb AM |
4974 | |
| 4975 | if (local_got_ents == NULL) | |
| 4976 | { | |
| 4977 | bfd_size_type size = symtab_hdr->sh_info; | |
| 4978 | ||
| e054468f AM |
4979 | size *= (sizeof (*local_got_ents) |
| 4980 | + sizeof (*local_plt) | |
| 4981 | + sizeof (*local_got_tls_masks)); | |
| 4ce794b7 | 4982 | local_got_ents = bfd_zalloc (abfd, size); |
| 411e1bfb | 4983 | if (local_got_ents == NULL) |
| e054468f | 4984 | return NULL; |
| 411e1bfb AM |
4985 | elf_local_got_ents (abfd) = local_got_ents; |
| 4986 | } | |
| 4987 | ||
| e054468f | 4988 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
| 411e1bfb AM |
4989 | { |
| 4990 | struct got_entry *ent; | |
| 4991 | ||
| 4992 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
| e717da7e AM |
4993 | if (ent->addend == r_addend |
| 4994 | && ent->owner == abfd | |
| 4995 | && ent->tls_type == tls_type) | |
| 411e1bfb AM |
4996 | break; |
| 4997 | if (ent == NULL) | |
| 4998 | { | |
| 4999 | bfd_size_type amt = sizeof (*ent); | |
| 4ce794b7 | 5000 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5001 | if (ent == NULL) |
| 5002 | return FALSE; | |
| 5003 | ent->next = local_got_ents[r_symndx]; | |
| 5004 | ent->addend = r_addend; | |
| e717da7e | 5005 | ent->owner = abfd; |
| 411e1bfb | 5006 | ent->tls_type = tls_type; |
| 927be08e | 5007 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5008 | ent->got.refcount = 0; |
| 5009 | local_got_ents[r_symndx] = ent; | |
| 5010 | } | |
| 5011 | ent->got.refcount += 1; | |
| 5012 | } | |
| 5013 | ||
| e054468f | 5014 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
| f961d9dd | 5015 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 5016 | local_got_tls_masks[r_symndx] |= tls_type; |
| e054468f AM |
5017 | |
| 5018 | return local_plt + r_symndx; | |
| 65f38f15 AM |
5019 | } |
| 5020 | ||
| 411e1bfb | 5021 | static bfd_boolean |
| e054468f | 5022 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
| 1e2f5b6e | 5023 | { |
| 411e1bfb | 5024 | struct plt_entry *ent; |
| 1e2f5b6e | 5025 | |
| e054468f | 5026 | for (ent = *plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
5027 | if (ent->addend == addend) |
| 5028 | break; | |
| 5029 | if (ent == NULL) | |
| 1e2f5b6e | 5030 | { |
| 411e1bfb | 5031 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5032 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5033 | if (ent == NULL) |
| 5034 | return FALSE; | |
| e054468f | 5035 | ent->next = *plist; |
| 411e1bfb AM |
5036 | ent->addend = addend; |
| 5037 | ent->plt.refcount = 0; | |
| e054468f | 5038 | *plist = ent; |
| 1e2f5b6e | 5039 | } |
| 411e1bfb | 5040 | ent->plt.refcount += 1; |
| b34976b6 | 5041 | return TRUE; |
| 1e2f5b6e AM |
5042 | } |
| 5043 | ||
| e054468f AM |
5044 | static bfd_boolean |
| 5045 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
| 5046 | { | |
| 5047 | return (r_type == R_PPC64_REL24 | |
| 5048 | || r_type == R_PPC64_REL14 | |
| 5049 | || r_type == R_PPC64_REL14_BRTAKEN | |
| 5050 | || r_type == R_PPC64_REL14_BRNTAKEN | |
| 5051 | || r_type == R_PPC64_ADDR24 | |
| 5052 | || r_type == R_PPC64_ADDR14 | |
| 5053 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
| 5054 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
| 5055 | } | |
| 5056 | ||
| 5bd4f169 | 5057 | /* Look through the relocs for a section during the first phase, and |
| 65f38f15 | 5058 | calculate needed space in the global offset table, procedure |
| 5d1634d7 | 5059 | linkage table, and dynamic reloc sections. */ |
| 5bd4f169 | 5060 | |
| b34976b6 | 5061 | static bfd_boolean |
| 4ce794b7 AM |
5062 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 5063 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 5064 | { |
| 65f38f15 | 5065 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 5066 | Elf_Internal_Shdr *symtab_hdr; |
| c7e2358a | 5067 | struct elf_link_hash_entry **sym_hashes; |
| 5bd4f169 AM |
5068 | const Elf_Internal_Rela *rel; |
| 5069 | const Elf_Internal_Rela *rel_end; | |
| 5bd4f169 | 5070 | asection *sreloc; |
| 1e2f5b6e | 5071 | asection **opd_sym_map; |
| 3a71aa26 | 5072 | struct elf_link_hash_entry *tga, *dottga; |
| 5bd4f169 | 5073 | |
| 1049f94e | 5074 | if (info->relocatable) |
| b34976b6 | 5075 | return TRUE; |
| 5bd4f169 | 5076 | |
| 680a3378 AM |
5077 | /* Don't do anything special with non-loaded, non-alloced sections. |
| 5078 | In particular, any relocs in such sections should not affect GOT | |
| 5079 | and PLT reference counting (ie. we don't allow them to create GOT | |
| 5080 | or PLT entries), there's no possibility or desire to optimize TLS | |
| 5081 | relocs, and there's not much point in propagating relocs to shared | |
| 5082 | libs that the dynamic linker won't relocate. */ | |
| 5083 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 5084 | return TRUE; | |
| 5085 | ||
| 0c8d6e5c | 5086 | BFD_ASSERT (is_ppc64_elf (abfd)); |
| 0ffa91dd | 5087 | |
| 65f38f15 | 5088 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
5089 | if (htab == NULL) |
| 5090 | return FALSE; | |
| 5091 | ||
| 3a71aa26 AM |
5092 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
| 5093 | FALSE, FALSE, TRUE); | |
| 5094 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 5095 | FALSE, FALSE, TRUE); | |
| 0ffa91dd | 5096 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 5097 | sym_hashes = elf_sym_hashes (abfd); |
| 5bd4f169 | 5098 | sreloc = NULL; |
| 1e2f5b6e | 5099 | opd_sym_map = NULL; |
| 70cc837d | 5100 | if (strcmp (sec->name, ".opd") == 0) |
| 1e2f5b6e AM |
5101 | { |
| 5102 | /* Garbage collection needs some extra help with .opd sections. | |
| 5103 | We don't want to necessarily keep everything referenced by | |
| 5104 | relocs in .opd, as that would keep all functions. Instead, | |
| 5105 | if we reference an .opd symbol (a function descriptor), we | |
| 5106 | want to keep the function code symbol's section. This is | |
| 5107 | easy for global symbols, but for local syms we need to keep | |
| 74f0fb50 | 5108 | information about the associated function section. */ |
| 1e2f5b6e AM |
5109 | bfd_size_type amt; |
| 5110 | ||
| ee67d69a AM |
5111 | if (abiversion (abfd) == 0) |
| 5112 | set_abiversion (abfd, 1); | |
| 5113 | else if (abiversion (abfd) == 2) | |
| 5114 | { | |
| 5115 | info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"), | |
| 5116 | abiversion (abfd)); | |
| 5117 | bfd_set_error (bfd_error_bad_value); | |
| 5118 | return FALSE; | |
| 5119 | } | |
| 74f0fb50 | 5120 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
| 4ce794b7 | 5121 | opd_sym_map = bfd_zalloc (abfd, amt); |
| 1e2f5b6e | 5122 | if (opd_sym_map == NULL) |
| b34976b6 | 5123 | return FALSE; |
| 74f0fb50 | 5124 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
| 7c8fe5c4 AM |
5125 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
| 5126 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e | 5127 | } |
| 5bd4f169 AM |
5128 | |
| 5129 | rel_end = relocs + sec->reloc_count; | |
| 5130 | for (rel = relocs; rel < rel_end; rel++) | |
| 5131 | { | |
| 5132 | unsigned long r_symndx; | |
| 5133 | struct elf_link_hash_entry *h; | |
| 04c9666a | 5134 | enum elf_ppc64_reloc_type r_type; |
| 727fc41e | 5135 | int tls_type; |
| 7c8fe5c4 | 5136 | struct _ppc64_elf_section_data *ppc64_sec; |
| e054468f | 5137 | struct plt_entry **ifunc; |
| 5bd4f169 AM |
5138 | |
| 5139 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 5140 | if (r_symndx < symtab_hdr->sh_info) | |
| 5141 | h = NULL; | |
| 5142 | else | |
| 973a3492 L |
5143 | { |
| 5144 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 5145 | h = elf_follow_link (h); |
| 81fbe831 AM |
5146 | |
| 5147 | /* PR15323, ref flags aren't set for references in the same | |
| 5148 | object. */ | |
| 5149 | h->root.non_ir_ref = 1; | |
| 1c865ab2 AM |
5150 | |
| 5151 | if (h == htab->elf.hgot) | |
| 5152 | sec->has_toc_reloc = 1; | |
| 973a3492 | 5153 | } |
| 5bd4f169 | 5154 | |
| 727fc41e | 5155 | tls_type = 0; |
| e054468f | 5156 | ifunc = NULL; |
| 25f23106 AM |
5157 | if (h != NULL) |
| 5158 | { | |
| 5159 | if (h->type == STT_GNU_IFUNC) | |
| 5160 | { | |
| 5161 | h->needs_plt = 1; | |
| 5162 | ifunc = &h->plt.plist; | |
| 5163 | } | |
| 5164 | } | |
| 5165 | else | |
| 5166 | { | |
| 5167 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5168 | abfd, r_symndx); | |
| 5169 | if (isym == NULL) | |
| 5170 | return FALSE; | |
| 5171 | ||
| 5172 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
| 5173 | { | |
| 5174 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5175 | rel->r_addend, PLT_IFUNC); | |
| 5176 | if (ifunc == NULL) | |
| 5177 | return FALSE; | |
| 5178 | } | |
| 5179 | } | |
| 4ce794b7 | 5180 | r_type = ELF64_R_TYPE (rel->r_info); |
| e054468f AM |
5181 | if (is_branch_reloc (r_type)) |
| 5182 | { | |
| 5183 | if (h != NULL && (h == tga || h == dottga)) | |
| 5184 | { | |
| 5185 | if (rel != relocs | |
| 5186 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
| 5187 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
| 5188 | /* We have a new-style __tls_get_addr call with a marker | |
| 5189 | reloc. */ | |
| 5190 | ; | |
| 5191 | else | |
| 5192 | /* Mark this section as having an old-style call. */ | |
| 5193 | sec->has_tls_get_addr_call = 1; | |
| 5194 | } | |
| 727fc41e | 5195 | |
| e054468f | 5196 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
| e054468f AM |
5197 | if (ifunc != NULL |
| 5198 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
| 5199 | return FALSE; | |
| 5200 | } | |
| 727fc41e | 5201 | |
| a33d1f77 | 5202 | switch (r_type) |
| 5bd4f169 | 5203 | { |
| 727fc41e AM |
5204 | case R_PPC64_TLSGD: |
| 5205 | case R_PPC64_TLSLD: | |
| 5206 | /* These special tls relocs tie a call to __tls_get_addr with | |
| 5207 | its parameter symbol. */ | |
| 5208 | break; | |
| 5209 | ||
| 411e1bfb AM |
5210 | case R_PPC64_GOT_TLSLD16: |
| 5211 | case R_PPC64_GOT_TLSLD16_LO: | |
| 5212 | case R_PPC64_GOT_TLSLD16_HI: | |
| 5213 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 5214 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5215 | goto dogottls; |
| 5216 | ||
| 5217 | case R_PPC64_GOT_TLSGD16: | |
| 5218 | case R_PPC64_GOT_TLSGD16_LO: | |
| 5219 | case R_PPC64_GOT_TLSGD16_HI: | |
| 5220 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 5221 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
5222 | goto dogottls; |
| 5223 | ||
| 5224 | case R_PPC64_GOT_TPREL16_DS: | |
| 5225 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 5226 | case R_PPC64_GOT_TPREL16_HI: | |
| 5227 | case R_PPC64_GOT_TPREL16_HA: | |
| 1d483afe | 5228 | if (!info->executable) |
| 411e1bfb AM |
5229 | info->flags |= DF_STATIC_TLS; |
| 5230 | tls_type = TLS_TLS | TLS_TPREL; | |
| 5231 | goto dogottls; | |
| 5232 | ||
| 5233 | case R_PPC64_GOT_DTPREL16_DS: | |
| 5234 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 5235 | case R_PPC64_GOT_DTPREL16_HI: | |
| 5236 | case R_PPC64_GOT_DTPREL16_HA: | |
| 5237 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 5238 | dogottls: | |
| 5239 | sec->has_tls_reloc = 1; | |
| 5240 | /* Fall thru */ | |
| 5241 | ||
| 5bd4f169 | 5242 | case R_PPC64_GOT16: |
| 5bd4f169 | 5243 | case R_PPC64_GOT16_DS: |
| 65f38f15 AM |
5244 | case R_PPC64_GOT16_HA: |
| 5245 | case R_PPC64_GOT16_HI: | |
| 5246 | case R_PPC64_GOT16_LO: | |
| 5bd4f169 | 5247 | case R_PPC64_GOT16_LO_DS: |
| 65f38f15 | 5248 | /* This symbol requires a global offset table entry. */ |
| 4c52953f | 5249 | sec->has_toc_reloc = 1; |
| 33c0ec9d AM |
5250 | if (r_type == R_PPC64_GOT_TLSLD16 |
| 5251 | || r_type == R_PPC64_GOT_TLSGD16 | |
| 5252 | || r_type == R_PPC64_GOT_TPREL16_DS | |
| 5253 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
| 5254 | || r_type == R_PPC64_GOT16 | |
| 5255 | || r_type == R_PPC64_GOT16_DS) | |
| 5256 | { | |
| 5257 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5258 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| 33c0ec9d AM |
5259 | } |
| 5260 | ||
| e717da7e AM |
5261 | if (ppc64_elf_tdata (abfd)->got == NULL |
| 5262 | && !create_got_section (abfd, info)) | |
| b34976b6 | 5263 | return FALSE; |
| 5bd4f169 AM |
5264 | |
| 5265 | if (h != NULL) | |
| 5266 | { | |
| 411e1bfb AM |
5267 | struct ppc_link_hash_entry *eh; |
| 5268 | struct got_entry *ent; | |
| 65f38f15 | 5269 | |
| 411e1bfb AM |
5270 | eh = (struct ppc_link_hash_entry *) h; |
| 5271 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
| 5272 | if (ent->addend == rel->r_addend | |
| e717da7e | 5273 | && ent->owner == abfd |
| 411e1bfb AM |
5274 | && ent->tls_type == tls_type) |
| 5275 | break; | |
| 5276 | if (ent == NULL) | |
| 5bd4f169 | 5277 | { |
| 411e1bfb | 5278 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5279 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb | 5280 | if (ent == NULL) |
| b34976b6 | 5281 | return FALSE; |
| 411e1bfb AM |
5282 | ent->next = eh->elf.got.glist; |
| 5283 | ent->addend = rel->r_addend; | |
| e717da7e | 5284 | ent->owner = abfd; |
| 411e1bfb | 5285 | ent->tls_type = tls_type; |
| 927be08e | 5286 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5287 | ent->got.refcount = 0; |
| 5288 | eh->elf.got.glist = ent; | |
| 5bd4f169 | 5289 | } |
| 411e1bfb | 5290 | ent->got.refcount += 1; |
| e7b938ca | 5291 | eh->tls_mask |= tls_type; |
| 5bd4f169 | 5292 | } |
| 411e1bfb AM |
5293 | else |
| 5294 | /* This is a global offset table entry for a local symbol. */ | |
| 5295 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5296 | rel->r_addend, tls_type)) | |
| 5297 | return FALSE; | |
| 5bd4f169 AM |
5298 | break; |
| 5299 | ||
| 5bd4f169 | 5300 | case R_PPC64_PLT16_HA: |
| 65f38f15 AM |
5301 | case R_PPC64_PLT16_HI: |
| 5302 | case R_PPC64_PLT16_LO: | |
| 5303 | case R_PPC64_PLT32: | |
| 5304 | case R_PPC64_PLT64: | |
| 5bd4f169 | 5305 | /* This symbol requires a procedure linkage table entry. We |
| 3fad3c7c AM |
5306 | actually build the entry in adjust_dynamic_symbol, |
| 5307 | because this might be a case of linking PIC code without | |
| 5308 | linking in any dynamic objects, in which case we don't | |
| 5309 | need to generate a procedure linkage table after all. */ | |
| 5bd4f169 AM |
5310 | if (h == NULL) |
| 5311 | { | |
| 5312 | /* It does not make sense to have a procedure linkage | |
| 3fad3c7c | 5313 | table entry for a local symbol. */ |
| 5bd4f169 | 5314 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 5315 | return FALSE; |
| 5bd4f169 | 5316 | } |
| 411e1bfb | 5317 | else |
| e054468f AM |
5318 | { |
| 5319 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5320 | return FALSE; | |
| 5321 | h->needs_plt = 1; | |
| 5322 | if (h->root.root.string[0] == '.' | |
| 5323 | && h->root.root.string[1] != '\0') | |
| 5324 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5325 | } | |
| 5bd4f169 AM |
5326 | break; |
| 5327 | ||
| 5328 | /* The following relocations don't need to propagate the | |
| 5329 | relocation if linking a shared object since they are | |
| 5330 | section relative. */ | |
| 5331 | case R_PPC64_SECTOFF: | |
| 5332 | case R_PPC64_SECTOFF_LO: | |
| 5333 | case R_PPC64_SECTOFF_HI: | |
| 5334 | case R_PPC64_SECTOFF_HA: | |
| 5335 | case R_PPC64_SECTOFF_DS: | |
| 5336 | case R_PPC64_SECTOFF_LO_DS: | |
| 411e1bfb AM |
5337 | case R_PPC64_DTPREL16: |
| 5338 | case R_PPC64_DTPREL16_LO: | |
| 5339 | case R_PPC64_DTPREL16_HI: | |
| 5340 | case R_PPC64_DTPREL16_HA: | |
| 5341 | case R_PPC64_DTPREL16_DS: | |
| 5342 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
5343 | case R_PPC64_DTPREL16_HIGH: |
| 5344 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
5345 | case R_PPC64_DTPREL16_HIGHER: |
| 5346 | case R_PPC64_DTPREL16_HIGHERA: | |
| 5347 | case R_PPC64_DTPREL16_HIGHEST: | |
| 5348 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 5bd4f169 AM |
5349 | break; |
| 5350 | ||
| ad8e1ba5 | 5351 | /* Nor do these. */ |
| 25f23106 AM |
5352 | case R_PPC64_REL16: |
| 5353 | case R_PPC64_REL16_LO: | |
| 5354 | case R_PPC64_REL16_HI: | |
| 5355 | case R_PPC64_REL16_HA: | |
| 5356 | break; | |
| 5357 | ||
| ad8e1ba5 | 5358 | case R_PPC64_TOC16: |
| 33c0ec9d AM |
5359 | case R_PPC64_TOC16_DS: |
| 5360 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5361 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| ad8e1ba5 AM |
5362 | case R_PPC64_TOC16_LO: |
| 5363 | case R_PPC64_TOC16_HI: | |
| 5364 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 5365 | case R_PPC64_TOC16_LO_DS: |
| 4c52953f | 5366 | sec->has_toc_reloc = 1; |
| ad8e1ba5 AM |
5367 | break; |
| 5368 | ||
| 5bd4f169 AM |
5369 | /* This relocation describes the C++ object vtable hierarchy. |
| 5370 | Reconstruct it for later use during GC. */ | |
| 5371 | case R_PPC64_GNU_VTINHERIT: | |
| c152c796 | 5372 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| b34976b6 | 5373 | return FALSE; |
| 5bd4f169 AM |
5374 | break; |
| 5375 | ||
| 5376 | /* This relocation describes which C++ vtable entries are actually | |
| 5377 | used. Record for later use during GC. */ | |
| 5378 | case R_PPC64_GNU_VTENTRY: | |
| d17e0c6e JB |
5379 | BFD_ASSERT (h != NULL); |
| 5380 | if (h != NULL | |
| 5381 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
| b34976b6 | 5382 | return FALSE; |
| 5bd4f169 AM |
5383 | break; |
| 5384 | ||
| 721956f4 AM |
5385 | case R_PPC64_REL14: |
| 5386 | case R_PPC64_REL14_BRTAKEN: | |
| 5387 | case R_PPC64_REL14_BRNTAKEN: | |
| 220c76dd AM |
5388 | { |
| 5389 | asection *dest = NULL; | |
| 5390 | ||
| 5391 | /* Heuristic: If jumping outside our section, chances are | |
| 5392 | we are going to need a stub. */ | |
| 5393 | if (h != NULL) | |
| 5394 | { | |
| 5395 | /* If the sym is weak it may be overridden later, so | |
| 5396 | don't assume we know where a weak sym lives. */ | |
| 5397 | if (h->root.type == bfd_link_hash_defined) | |
| 5398 | dest = h->root.u.def.section; | |
| 5399 | } | |
| 5400 | else | |
| 87d72d41 AM |
5401 | { |
| 5402 | Elf_Internal_Sym *isym; | |
| 5403 | ||
| 5404 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5405 | abfd, r_symndx); | |
| 5406 | if (isym == NULL) | |
| 5407 | return FALSE; | |
| 5408 | ||
| 5409 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5410 | } | |
| 5411 | ||
| 220c76dd | 5412 | if (dest != sec) |
| 7c8fe5c4 | 5413 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
| 220c76dd | 5414 | } |
| 721956f4 AM |
5415 | /* Fall through. */ |
| 5416 | ||
| 5d1634d7 | 5417 | case R_PPC64_REL24: |
| e054468f | 5418 | if (h != NULL && ifunc == NULL) |
| 5d1634d7 AM |
5419 | { |
| 5420 | /* We may need a .plt entry if the function this reloc | |
| 5421 | refers to is in a shared lib. */ | |
| e054468f | 5422 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
| 411e1bfb | 5423 | return FALSE; |
| e054468f AM |
5424 | h->needs_plt = 1; |
| 5425 | if (h->root.root.string[0] == '.' | |
| 5426 | && h->root.root.string[1] != '\0') | |
| 5427 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 3a71aa26 | 5428 | if (h == tga || h == dottga) |
| 411e1bfb | 5429 | sec->has_tls_reloc = 1; |
| 411e1bfb AM |
5430 | } |
| 5431 | break; | |
| 5432 | ||
| 5433 | case R_PPC64_TPREL64: | |
| 5434 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
| 1d483afe | 5435 | if (!info->executable) |
| 411e1bfb AM |
5436 | info->flags |= DF_STATIC_TLS; |
| 5437 | goto dotlstoc; | |
| 5438 | ||
| 5439 | case R_PPC64_DTPMOD64: | |
| 5440 | if (rel + 1 < rel_end | |
| 5441 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 5442 | && rel[1].r_offset == rel->r_offset + 8) | |
| 951fd09b | 5443 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
| 411e1bfb | 5444 | else |
| 951fd09b | 5445 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5446 | goto dotlstoc; |
| 5447 | ||
| 5448 | case R_PPC64_DTPREL64: | |
| 5449 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
| 5450 | if (rel != relocs | |
| 5451 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
| 5452 | && rel[-1].r_offset == rel->r_offset - 8) | |
| 5453 | /* This is the second reloc of a dtpmod, dtprel pair. | |
| 5454 | Don't mark with TLS_DTPREL. */ | |
| 5455 | goto dodyn; | |
| 5456 | ||
| 5457 | dotlstoc: | |
| 5458 | sec->has_tls_reloc = 1; | |
| 5459 | if (h != NULL) | |
| 5460 | { | |
| 5461 | struct ppc_link_hash_entry *eh; | |
| 5462 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 5463 | eh->tls_mask |= tls_type; |
| 411e1bfb AM |
5464 | } |
| 5465 | else | |
| 5466 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5467 | rel->r_addend, tls_type)) | |
| 5468 | return FALSE; | |
| 5469 | ||
| 7c8fe5c4 AM |
5470 | ppc64_sec = ppc64_elf_section_data (sec); |
| 5471 | if (ppc64_sec->sec_type != sec_toc) | |
| 411e1bfb | 5472 | { |
| 3a71aa26 AM |
5473 | bfd_size_type amt; |
| 5474 | ||
| e7b938ca | 5475 | /* One extra to simplify get_tls_mask. */ |
| 3a71aa26 AM |
5476 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
| 5477 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
| 5478 | if (ppc64_sec->u.toc.symndx == NULL) | |
| 5479 | return FALSE; | |
| 5480 | amt = sec->size * sizeof (bfd_vma) / 8; | |
| 5481 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
| 5482 | if (ppc64_sec->u.toc.add == NULL) | |
| 411e1bfb | 5483 | return FALSE; |
| 7c8fe5c4 AM |
5484 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
| 5485 | ppc64_sec->sec_type = sec_toc; | |
| 411e1bfb AM |
5486 | } |
| 5487 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
| 3a71aa26 AM |
5488 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
| 5489 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
| 951fd09b AM |
5490 | |
| 5491 | /* Mark the second slot of a GD or LD entry. | |
| 5492 | -1 to indicate GD and -2 to indicate LD. */ | |
| 5493 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
| 3a71aa26 | 5494 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
| 951fd09b | 5495 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
| 3a71aa26 | 5496 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
| 411e1bfb AM |
5497 | goto dodyn; |
| 5498 | ||
| 5499 | case R_PPC64_TPREL16: | |
| 5500 | case R_PPC64_TPREL16_LO: | |
| 5501 | case R_PPC64_TPREL16_HI: | |
| 5502 | case R_PPC64_TPREL16_HA: | |
| 5503 | case R_PPC64_TPREL16_DS: | |
| 5504 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
5505 | case R_PPC64_TPREL16_HIGH: |
| 5506 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
5507 | case R_PPC64_TPREL16_HIGHER: |
| 5508 | case R_PPC64_TPREL16_HIGHERA: | |
| 5509 | case R_PPC64_TPREL16_HIGHEST: | |
| 5510 | case R_PPC64_TPREL16_HIGHESTA: | |
| 5511 | if (info->shared) | |
| 5512 | { | |
| 1d483afe AM |
5513 | if (!info->executable) |
| 5514 | info->flags |= DF_STATIC_TLS; | |
| 411e1bfb | 5515 | goto dodyn; |
| 5d1634d7 AM |
5516 | } |
| 5517 | break; | |
| 5518 | ||
| e86ce104 | 5519 | case R_PPC64_ADDR64: |
| 1e2f5b6e | 5520 | if (opd_sym_map != NULL |
| 1e2f5b6e | 5521 | && rel + 1 < rel_end |
| 4ce794b7 | 5522 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
| 1e2f5b6e | 5523 | { |
| 8387904d AM |
5524 | if (h != NULL) |
| 5525 | { | |
| 5526 | if (h->root.root.string[0] == '.' | |
| 5527 | && h->root.root.string[1] != 0 | |
| b31867b6 | 5528 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
| 8387904d AM |
5529 | ; |
| 5530 | else | |
| 5531 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5532 | } | |
| 5533 | else | |
| 5534 | { | |
| 5535 | asection *s; | |
| 87d72d41 | 5536 | Elf_Internal_Sym *isym; |
| 1e2f5b6e | 5537 | |
| 87d72d41 AM |
5538 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5539 | abfd, r_symndx); | |
| 5540 | if (isym == NULL) | |
| 8387904d | 5541 | return FALSE; |
| 87d72d41 AM |
5542 | |
| 5543 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5544 | if (s != NULL && s != sec) | |
| 3f764659 | 5545 | opd_sym_map[rel->r_offset / 8] = s; |
| 8387904d | 5546 | } |
| 1e2f5b6e | 5547 | } |
| e86ce104 AM |
5548 | /* Fall through. */ |
| 5549 | ||
| 04c9666a | 5550 | case R_PPC64_REL30: |
| 5bd4f169 | 5551 | case R_PPC64_REL32: |
| 04c9666a | 5552 | case R_PPC64_REL64: |
| 65f38f15 AM |
5553 | case R_PPC64_ADDR14: |
| 5554 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 5555 | case R_PPC64_ADDR14_BRTAKEN: | |
| 5556 | case R_PPC64_ADDR16: | |
| 5557 | case R_PPC64_ADDR16_DS: | |
| 5558 | case R_PPC64_ADDR16_HA: | |
| 5559 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
5560 | case R_PPC64_ADDR16_HIGH: |
| 5561 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
5562 | case R_PPC64_ADDR16_HIGHER: |
| 5563 | case R_PPC64_ADDR16_HIGHERA: | |
| 5564 | case R_PPC64_ADDR16_HIGHEST: | |
| 5565 | case R_PPC64_ADDR16_HIGHESTA: | |
| 5566 | case R_PPC64_ADDR16_LO: | |
| 5567 | case R_PPC64_ADDR16_LO_DS: | |
| 5568 | case R_PPC64_ADDR24: | |
| 65f38f15 | 5569 | case R_PPC64_ADDR32: |
| 65f38f15 AM |
5570 | case R_PPC64_UADDR16: |
| 5571 | case R_PPC64_UADDR32: | |
| 5572 | case R_PPC64_UADDR64: | |
| 5bd4f169 | 5573 | case R_PPC64_TOC: |
| 81848ca0 AM |
5574 | if (h != NULL && !info->shared) |
| 5575 | /* We may need a copy reloc. */ | |
| f5385ebf | 5576 | h->non_got_ref = 1; |
| 81848ca0 | 5577 | |
| 41bd81ab | 5578 | /* Don't propagate .opd relocs. */ |
| 1e2f5b6e | 5579 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
| e86ce104 | 5580 | break; |
| e86ce104 | 5581 | |
| 65f38f15 AM |
5582 | /* If we are creating a shared library, and this is a reloc |
| 5583 | against a global symbol, or a non PC relative reloc | |
| 5584 | against a local symbol, then we need to copy the reloc | |
| 5585 | into the shared library. However, if we are linking with | |
| 5586 | -Bsymbolic, we do not need to copy a reloc against a | |
| 5587 | global symbol which is defined in an object we are | |
| 5588 | including in the link (i.e., DEF_REGULAR is set). At | |
| 5589 | this point we have not seen all the input files, so it is | |
| 5590 | possible that DEF_REGULAR is not set now but will be set | |
| 5591 | later (it is never cleared). In case of a weak definition, | |
| 5592 | DEF_REGULAR may be cleared later by a strong definition in | |
| 5593 | a shared library. We account for that possibility below by | |
| f4656909 | 5594 | storing information in the dyn_relocs field of the hash |
| 65f38f15 AM |
5595 | table entry. A similar situation occurs when creating |
| 5596 | shared libraries and symbol visibility changes render the | |
| 5597 | symbol local. | |
| 5598 | ||
| 5599 | If on the other hand, we are creating an executable, we | |
| 5600 | may need to keep relocations for symbols satisfied by a | |
| 5601 | dynamic library if we manage to avoid copy relocs for the | |
| 5602 | symbol. */ | |
| 411e1bfb | 5603 | dodyn: |
| 65f38f15 | 5604 | if ((info->shared |
| 1d483afe | 5605 | && (must_be_dyn_reloc (info, r_type) |
| 65f38f15 | 5606 | || (h != NULL |
| 198f1157 | 5607 | && (!SYMBOLIC_BIND (info, h) |
| 65f38f15 | 5608 | || h->root.type == bfd_link_hash_defweak |
| f5385ebf | 5609 | || !h->def_regular)))) |
| f4656909 AM |
5610 | || (ELIMINATE_COPY_RELOCS |
| 5611 | && !info->shared | |
| 65f38f15 AM |
5612 | && h != NULL |
| 5613 | && (h->root.type == bfd_link_hash_defweak | |
| 25f23106 AM |
5614 | || !h->def_regular)) |
| 5615 | || (!info->shared | |
| 5616 | && ifunc != NULL)) | |
| 5bd4f169 | 5617 | { |
| 65f38f15 AM |
5618 | /* We must copy these reloc types into the output file. |
| 5619 | Create a reloc section in dynobj and make room for | |
| 5620 | this reloc. */ | |
| 5bd4f169 AM |
5621 | if (sreloc == NULL) |
| 5622 | { | |
| 83bac4b0 NC |
5623 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 5624 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
| 65f38f15 | 5625 | |
| 5bd4f169 | 5626 | if (sreloc == NULL) |
| 83bac4b0 | 5627 | return FALSE; |
| 5bd4f169 AM |
5628 | } |
| 5629 | ||
| 65f38f15 AM |
5630 | /* If this is a global symbol, we count the number of |
| 5631 | relocations we need for this symbol. */ | |
| 5632 | if (h != NULL) | |
| 5633 | { | |
| 19e08130 AM |
5634 | struct elf_dyn_relocs *p; |
| 5635 | struct elf_dyn_relocs **head; | |
| 5636 | ||
| ec338859 | 5637 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
| 19e08130 AM |
5638 | p = *head; |
| 5639 | if (p == NULL || p->sec != sec) | |
| 5640 | { | |
| 5641 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5642 | if (p == NULL) | |
| 5643 | return FALSE; | |
| 5644 | p->next = *head; | |
| 5645 | *head = p; | |
| 5646 | p->sec = sec; | |
| 5647 | p->count = 0; | |
| 5648 | p->pc_count = 0; | |
| 5649 | } | |
| 5650 | p->count += 1; | |
| 5651 | if (!must_be_dyn_reloc (info, r_type)) | |
| 5652 | p->pc_count += 1; | |
| 65f38f15 AM |
5653 | } |
| 5654 | else | |
| 5655 | { | |
| ec338859 AM |
5656 | /* Track dynamic relocs needed for local syms too. |
| 5657 | We really need local syms available to do this | |
| 5658 | easily. Oh well. */ | |
| 19e08130 AM |
5659 | struct ppc_dyn_relocs *p; |
| 5660 | struct ppc_dyn_relocs **head; | |
| 5661 | bfd_boolean is_ifunc; | |
| ec338859 | 5662 | asection *s; |
| 6edfbbad | 5663 | void *vpp; |
| 87d72d41 | 5664 | Elf_Internal_Sym *isym; |
| 6edfbbad | 5665 | |
| 87d72d41 AM |
5666 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5667 | abfd, r_symndx); | |
| 5668 | if (isym == NULL) | |
| b34976b6 | 5669 | return FALSE; |
| ec338859 | 5670 | |
| 87d72d41 AM |
5671 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 5672 | if (s == NULL) | |
| 5673 | s = sec; | |
| 5674 | ||
| 6edfbbad | 5675 | vpp = &elf_section_data (s)->local_dynrel; |
| 19e08130 AM |
5676 | head = (struct ppc_dyn_relocs **) vpp; |
| 5677 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
| 5678 | p = *head; | |
| 5679 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
| 5680 | p = p->next; | |
| 5681 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
| 5682 | { | |
| 5683 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5684 | if (p == NULL) | |
| 5685 | return FALSE; | |
| 5686 | p->next = *head; | |
| 5687 | *head = p; | |
| 5688 | p->sec = sec; | |
| 5689 | p->ifunc = is_ifunc; | |
| 5690 | p->count = 0; | |
| 5691 | } | |
| 5692 | p->count += 1; | |
| ec338859 | 5693 | } |
| 65f38f15 | 5694 | } |
| 5bd4f169 | 5695 | break; |
| 65f38f15 AM |
5696 | |
| 5697 | default: | |
| 96e0dda4 | 5698 | break; |
| 5bd4f169 AM |
5699 | } |
| 5700 | } | |
| 5701 | ||
| b34976b6 | 5702 | return TRUE; |
| 5bd4f169 AM |
5703 | } |
| 5704 | ||
| ee67d69a AM |
5705 | /* Merge backend specific data from an object file to the output |
| 5706 | object file when linking. */ | |
| 5707 | ||
| 5708 | static bfd_boolean | |
| 5709 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
| 5710 | { | |
| 5711 | unsigned long iflags, oflags; | |
| 5712 | ||
| 5713 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
| 5714 | return TRUE; | |
| 5715 | ||
| 5716 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
| 5717 | return TRUE; | |
| 5718 | ||
| 5719 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
| 5720 | return FALSE; | |
| 5721 | ||
| 5722 | iflags = elf_elfheader (ibfd)->e_flags; | |
| 5723 | oflags = elf_elfheader (obfd)->e_flags; | |
| 5724 | ||
| 5725 | if (!elf_flags_init (obfd) || oflags == 0) | |
| 5726 | { | |
| 5727 | elf_flags_init (obfd) = TRUE; | |
| 5728 | elf_elfheader (obfd)->e_flags = iflags; | |
| 5729 | } | |
| 5730 | else if (iflags == oflags || iflags == 0) | |
| 5731 | ; | |
| 5732 | else if (iflags & ~EF_PPC64_ABI) | |
| 5733 | { | |
| 5734 | (*_bfd_error_handler) | |
| 5735 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
| 5736 | bfd_set_error (bfd_error_bad_value); | |
| 5737 | return FALSE; | |
| 5738 | } | |
| 5739 | else | |
| 5740 | { | |
| 5741 | (*_bfd_error_handler) | |
| 5742 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
| 5743 | ibfd, iflags, oflags); | |
| 5744 | bfd_set_error (bfd_error_bad_value); | |
| 5745 | return FALSE; | |
| 5746 | } | |
| 5747 | ||
| 5748 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
| 5749 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
| 5750 | ||
| 5751 | return TRUE; | |
| 5752 | } | |
| 5753 | ||
| 5754 | static bfd_boolean | |
| 5755 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
| 5756 | { | |
| 5757 | /* Print normal ELF private data. */ | |
| 5758 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
| 5759 | ||
| 5760 | if (elf_elfheader (abfd)->e_flags != 0) | |
| 5761 | { | |
| 5762 | FILE *file = ptr; | |
| 5763 | ||
| 5764 | /* xgettext:c-format */ | |
| 5765 | fprintf (file, _("private flags = 0x%lx:"), | |
| 5766 | elf_elfheader (abfd)->e_flags); | |
| 5767 | ||
| 5768 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
| 5769 | fprintf (file, _(" [abiv%ld]"), | |
| 5770 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
| 5771 | fputc ('\n', file); | |
| 5772 | } | |
| 5773 | ||
| 5774 | return TRUE; | |
| 5775 | } | |
| 5776 | ||
| 8387904d AM |
5777 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
| 5778 | of the code entry point, and its section. */ | |
| 5779 | ||
| 5780 | static bfd_vma | |
| 5781 | opd_entry_value (asection *opd_sec, | |
| 5782 | bfd_vma offset, | |
| 5783 | asection **code_sec, | |
| aef36ac1 AM |
5784 | bfd_vma *code_off, |
| 5785 | bfd_boolean in_code_sec) | |
| 8387904d AM |
5786 | { |
| 5787 | bfd *opd_bfd = opd_sec->owner; | |
| 8860955f | 5788 | Elf_Internal_Rela *relocs; |
| 8387904d | 5789 | Elf_Internal_Rela *lo, *hi, *look; |
| 645ea6a9 | 5790 | bfd_vma val; |
| 8387904d | 5791 | |
| 9f296da3 AM |
5792 | /* No relocs implies we are linking a --just-symbols object, or looking |
| 5793 | at a final linked executable with addr2line or somesuch. */ | |
| 4b85d634 AM |
5794 | if (opd_sec->reloc_count == 0) |
| 5795 | { | |
| 729eabd5 | 5796 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
| 3b36f7e6 | 5797 | |
| 729eabd5 AM |
5798 | if (contents == NULL) |
| 5799 | { | |
| 5800 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
| 5801 | return (bfd_vma) -1; | |
| 5802 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
| 5803 | } | |
| ee1e4ede | 5804 | |
| 729eabd5 | 5805 | val = bfd_get_64 (opd_bfd, contents + offset); |
| aef36ac1 AM |
5806 | if (code_sec != NULL) |
| 5807 | { | |
| 5808 | asection *sec, *likely = NULL; | |
| ee1e4ede | 5809 | |
| aef36ac1 | 5810 | if (in_code_sec) |
| 4b85d634 | 5811 | { |
| aef36ac1 AM |
5812 | sec = *code_sec; |
| 5813 | if (sec->vma <= val | |
| 5814 | && val < sec->vma + sec->size) | |
| 5815 | likely = sec; | |
| 5816 | else | |
| 5817 | val = -1; | |
| 5818 | } | |
| 5819 | else | |
| 5820 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
| 5821 | if (sec->vma <= val | |
| 5822 | && (sec->flags & SEC_LOAD) != 0 | |
| 5823 | && (sec->flags & SEC_ALLOC) != 0) | |
| 5824 | likely = sec; | |
| 5825 | if (likely != NULL) | |
| 5826 | { | |
| 5827 | *code_sec = likely; | |
| 5828 | if (code_off != NULL) | |
| 5829 | *code_off = val - likely->vma; | |
| 4b85d634 AM |
5830 | } |
| 5831 | } | |
| aef36ac1 | 5832 | return val; |
| 4b85d634 AM |
5833 | } |
| 5834 | ||
| 0c8d6e5c | 5835 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
| 0ffa91dd | 5836 | |
| 729eabd5 | 5837 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
| 8860955f AM |
5838 | if (relocs == NULL) |
| 5839 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
| 645ea6a9 | 5840 | |
| 8387904d | 5841 | /* Go find the opd reloc at the sym address. */ |
| 8860955f | 5842 | lo = relocs; |
| 8387904d AM |
5843 | BFD_ASSERT (lo != NULL); |
| 5844 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
| 645ea6a9 | 5845 | val = (bfd_vma) -1; |
| 8387904d AM |
5846 | while (lo < hi) |
| 5847 | { | |
| 5848 | look = lo + (hi - lo) / 2; | |
| 5849 | if (look->r_offset < offset) | |
| 5850 | lo = look + 1; | |
| 5851 | else if (look->r_offset > offset) | |
| 5852 | hi = look; | |
| 5853 | else | |
| 5854 | { | |
| 0ffa91dd NC |
5855 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
| 5856 | ||
| 8387904d AM |
5857 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
| 5858 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
| 5859 | { | |
| 5860 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
| 8387904d AM |
5861 | asection *sec; |
| 5862 | ||
| 62599110 AM |
5863 | if (symndx < symtab_hdr->sh_info |
| 5864 | || elf_sym_hashes (opd_bfd) == NULL) | |
| 8387904d AM |
5865 | { |
| 5866 | Elf_Internal_Sym *sym; | |
| 5867 | ||
| 5868 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 5869 | if (sym == NULL) | |
| 5870 | { | |
| 62599110 AM |
5871 | size_t symcnt = symtab_hdr->sh_info; |
| 5872 | if (elf_sym_hashes (opd_bfd) == NULL) | |
| 5873 | symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
| 5874 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt, | |
| 8387904d AM |
5875 | 0, NULL, NULL, NULL); |
| 5876 | if (sym == NULL) | |
| 645ea6a9 | 5877 | break; |
| 8387904d AM |
5878 | symtab_hdr->contents = (bfd_byte *) sym; |
| 5879 | } | |
| 5880 | ||
| 5881 | sym += symndx; | |
| 5882 | val = sym->st_value; | |
| cb33740c | 5883 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
| 8387904d AM |
5884 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
| 5885 | } | |
| 5886 | else | |
| 5887 | { | |
| 5888 | struct elf_link_hash_entry **sym_hashes; | |
| 5889 | struct elf_link_hash_entry *rh; | |
| 5890 | ||
| 5891 | sym_hashes = elf_sym_hashes (opd_bfd); | |
| 5892 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
| 128205bb AM |
5893 | if (rh != NULL) |
| 5894 | { | |
| 5895 | rh = elf_follow_link (rh); | |
| 5896 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
| 5897 | || rh->root.type == bfd_link_hash_defweak); | |
| 5898 | val = rh->root.u.def.value; | |
| 5899 | sec = rh->root.u.def.section; | |
| 5900 | } | |
| 5901 | else | |
| 5902 | { | |
| 5903 | /* Handle the odd case where we can be called | |
| 5904 | during bfd_elf_link_add_symbols before the | |
| 5905 | symbol hashes have been fully populated. */ | |
| 5906 | Elf_Internal_Sym *sym; | |
| 5907 | ||
| 5908 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1, | |
| 5909 | symndx, NULL, NULL, NULL); | |
| 5910 | if (sym == NULL) | |
| 5911 | break; | |
| 5912 | ||
| 5913 | val = sym->st_value; | |
| 5914 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
| 5915 | free (sym); | |
| 5916 | } | |
| 8387904d AM |
5917 | } |
| 5918 | val += look->r_addend; | |
| 5919 | if (code_off != NULL) | |
| 5920 | *code_off = val; | |
| 5921 | if (code_sec != NULL) | |
| aef36ac1 AM |
5922 | { |
| 5923 | if (in_code_sec && *code_sec != sec) | |
| 5924 | return -1; | |
| 5925 | else | |
| 5926 | *code_sec = sec; | |
| 5927 | } | |
| 8387904d AM |
5928 | if (sec != NULL && sec->output_section != NULL) |
| 5929 | val += sec->output_section->vma + sec->output_offset; | |
| 8387904d AM |
5930 | } |
| 5931 | break; | |
| 5932 | } | |
| 5933 | } | |
| 645ea6a9 | 5934 | |
| 645ea6a9 | 5935 | return val; |
| 8387904d AM |
5936 | } |
| 5937 | ||
| aef36ac1 AM |
5938 | /* If the ELF symbol SYM might be a function in SEC, return the |
| 5939 | function size and set *CODE_OFF to the function's entry point, | |
| 5940 | otherwise return zero. */ | |
| 9f296da3 | 5941 | |
| aef36ac1 AM |
5942 | static bfd_size_type |
| 5943 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
| 5944 | bfd_vma *code_off) | |
| 9f296da3 | 5945 | { |
| aef36ac1 AM |
5946 | bfd_size_type size; |
| 5947 | ||
| 5948 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
| 5949 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
| 5950 | return 0; | |
| 5951 | ||
| 5952 | size = 0; | |
| 5953 | if (!(sym->flags & BSF_SYNTHETIC)) | |
| 5954 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
| 5955 | ||
| 5956 | if (strcmp (sym->section->name, ".opd") == 0) | |
| 9f296da3 | 5957 | { |
| aef36ac1 AM |
5958 | if (opd_entry_value (sym->section, sym->value, |
| 5959 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
| 5960 | return 0; | |
| 5961 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
| 5962 | symbol. This size has nothing to do with the code size of the | |
| 5963 | function, which is what we're supposed to return, but the | |
| 5964 | code size isn't available without looking up the dot-sym. | |
| 5965 | However, doing that would be a waste of time particularly | |
| 5966 | since elf_find_function will look at the dot-sym anyway. | |
| 5967 | Now, elf_find_function will keep the largest size of any | |
| 5968 | function sym found at the code address of interest, so return | |
| 5969 | 1 here to avoid it incorrectly caching a larger function size | |
| 5970 | for a small function. This does mean we return the wrong | |
| 5971 | size for a new-ABI function of size 24, but all that does is | |
| 5972 | disable caching for such functions. */ | |
| 5973 | if (size == 24) | |
| 5974 | size = 1; | |
| 9f296da3 | 5975 | } |
| aef36ac1 AM |
5976 | else |
| 5977 | { | |
| 5978 | if (sym->section != sec) | |
| 5979 | return 0; | |
| 5980 | *code_off = sym->value; | |
| 5981 | } | |
| 5982 | if (size == 0) | |
| 5983 | size = 1; | |
| 5984 | return size; | |
| 9f296da3 AM |
5985 | } |
| 5986 | ||
| 854b41e7 AM |
5987 | /* Return true if symbol is defined in a regular object file. */ |
| 5988 | ||
| 5989 | static bfd_boolean | |
| 5990 | is_static_defined (struct elf_link_hash_entry *h) | |
| 5991 | { | |
| 5992 | return ((h->root.type == bfd_link_hash_defined | |
| 5993 | || h->root.type == bfd_link_hash_defweak) | |
| 5994 | && h->root.u.def.section != NULL | |
| 5995 | && h->root.u.def.section->output_section != NULL); | |
| 5996 | } | |
| 5997 | ||
| b31867b6 AM |
5998 | /* If FDH is a function descriptor symbol, return the associated code |
| 5999 | entry symbol if it is defined. Return NULL otherwise. */ | |
| 6000 | ||
| 6001 | static struct ppc_link_hash_entry * | |
| 6002 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
| 6003 | { | |
| 6004 | if (fdh->is_func_descriptor) | |
| 6005 | { | |
| 6006 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
| 6007 | if (fh->elf.root.type == bfd_link_hash_defined | |
| 6008 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6009 | return fh; | |
| 6010 | } | |
| 6011 | return NULL; | |
| 6012 | } | |
| 6013 | ||
| 6014 | /* If FH is a function code entry symbol, return the associated | |
| 6015 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
| 6016 | ||
| 6017 | static struct ppc_link_hash_entry * | |
| 6018 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
| 6019 | { | |
| 6020 | if (fh->oh != NULL | |
| 6021 | && fh->oh->is_func_descriptor) | |
| 6022 | { | |
| 6023 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
| 6024 | if (fdh->elf.root.type == bfd_link_hash_defined | |
| 6025 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 6026 | return fdh; | |
| 6027 | } | |
| 6028 | return NULL; | |
| 6029 | } | |
| 6030 | ||
| 74f0fb50 AM |
6031 | /* Mark all our entry sym sections, both opd and code section. */ |
| 6032 | ||
| 6033 | static void | |
| 6034 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
| 6035 | { | |
| 6036 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6037 | struct bfd_sym_chain *sym; | |
| 6038 | ||
| 4dfe6ac6 NC |
6039 | if (htab == NULL) |
| 6040 | return; | |
| 6041 | ||
| 74f0fb50 AM |
6042 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
| 6043 | { | |
| b31867b6 | 6044 | struct ppc_link_hash_entry *eh, *fh; |
| 74f0fb50 AM |
6045 | asection *sec; |
| 6046 | ||
| 6047 | eh = (struct ppc_link_hash_entry *) | |
| b31867b6 | 6048 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
| 74f0fb50 AM |
6049 | if (eh == NULL) |
| 6050 | continue; | |
| 6051 | if (eh->elf.root.type != bfd_link_hash_defined | |
| 6052 | && eh->elf.root.type != bfd_link_hash_defweak) | |
| 6053 | continue; | |
| 6054 | ||
| b31867b6 AM |
6055 | fh = defined_code_entry (eh); |
| 6056 | if (fh != NULL) | |
| 74f0fb50 | 6057 | { |
| b31867b6 | 6058 | sec = fh->elf.root.u.def.section; |
| 74f0fb50 AM |
6059 | sec->flags |= SEC_KEEP; |
| 6060 | } | |
| 6061 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
| 6062 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6063 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6064 | &sec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 AM |
6065 | sec->flags |= SEC_KEEP; |
| 6066 | ||
| 6067 | sec = eh->elf.root.u.def.section; | |
| 6068 | sec->flags |= SEC_KEEP; | |
| 6069 | } | |
| 6070 | } | |
| 6071 | ||
| 64d03ab5 AM |
6072 | /* Mark sections containing dynamically referenced symbols. When |
| 6073 | building shared libraries, we must assume that any visible symbol is | |
| 6074 | referenced. */ | |
| 6075 | ||
| 6076 | static bfd_boolean | |
| 6077 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
| 6078 | { | |
| 6079 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
| 6080 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| b31867b6 | 6081 | struct ppc_link_hash_entry *fdh; |
| 64d03ab5 | 6082 | |
| 64d03ab5 | 6083 | /* Dynamic linking info is on the func descriptor sym. */ |
| b31867b6 AM |
6084 | fdh = defined_func_desc (eh); |
| 6085 | if (fdh != NULL) | |
| 6086 | eh = fdh; | |
| 64d03ab5 AM |
6087 | |
| 6088 | if ((eh->elf.root.type == bfd_link_hash_defined | |
| 6089 | || eh->elf.root.type == bfd_link_hash_defweak) | |
| 6090 | && (eh->elf.ref_dynamic | |
| 6091 | || (!info->executable | |
| 6092 | && eh->elf.def_regular | |
| 6093 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
| 4c58e0d8 AM |
6094 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
| 6095 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL | |
| 6096 | || !bfd_hide_sym_by_version (info->version_info, | |
| 6097 | eh->elf.root.root.string))))) | |
| 64d03ab5 AM |
6098 | { |
| 6099 | asection *code_sec; | |
| b31867b6 | 6100 | struct ppc_link_hash_entry *fh; |
| 64d03ab5 AM |
6101 | |
| 6102 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
| 6103 | ||
| 6104 | /* Function descriptor syms cause the associated | |
| 6105 | function code sym section to be marked. */ | |
| b31867b6 AM |
6106 | fh = defined_code_entry (eh); |
| 6107 | if (fh != NULL) | |
| 6108 | { | |
| 6109 | code_sec = fh->elf.root.u.def.section; | |
| 6110 | code_sec->flags |= SEC_KEEP; | |
| 6111 | } | |
| 64d03ab5 AM |
6112 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6113 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6114 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6115 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
| 64d03ab5 AM |
6116 | code_sec->flags |= SEC_KEEP; |
| 6117 | } | |
| 6118 | ||
| 6119 | return TRUE; | |
| 6120 | } | |
| 6121 | ||
| 5bd4f169 AM |
6122 | /* Return the section that should be marked against GC for a given |
| 6123 | relocation. */ | |
| 6124 | ||
| 6125 | static asection * | |
| 4ce794b7 | 6126 | ppc64_elf_gc_mark_hook (asection *sec, |
| fb34365b | 6127 | struct bfd_link_info *info, |
| 4ce794b7 AM |
6128 | Elf_Internal_Rela *rel, |
| 6129 | struct elf_link_hash_entry *h, | |
| 6130 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 6131 | { |
| ccfa59ea AM |
6132 | asection *rsec; |
| 6133 | ||
| ccfa59ea AM |
6134 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
| 6135 | function sections, as all functions are referenced in .opd. */ | |
| 6136 | rsec = NULL; | |
| 6137 | if (get_opd_info (sec) != NULL) | |
| 6138 | return rsec; | |
| 1e2f5b6e | 6139 | |
| 5bd4f169 AM |
6140 | if (h != NULL) |
| 6141 | { | |
| 04c9666a | 6142 | enum elf_ppc64_reloc_type r_type; |
| b31867b6 | 6143 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
| a33d1f77 | 6144 | |
| 4ce794b7 | 6145 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 6146 | switch (r_type) |
| 5bd4f169 AM |
6147 | { |
| 6148 | case R_PPC64_GNU_VTINHERIT: | |
| 6149 | case R_PPC64_GNU_VTENTRY: | |
| 6150 | break; | |
| 6151 | ||
| 6152 | default: | |
| 6153 | switch (h->root.type) | |
| 6154 | { | |
| 6155 | case bfd_link_hash_defined: | |
| 6156 | case bfd_link_hash_defweak: | |
| ccfa59ea | 6157 | eh = (struct ppc_link_hash_entry *) h; |
| b31867b6 AM |
6158 | fdh = defined_func_desc (eh); |
| 6159 | if (fdh != NULL) | |
| 6160 | eh = fdh; | |
| 1e2f5b6e AM |
6161 | |
| 6162 | /* Function descriptor syms cause the associated | |
| 6163 | function code sym section to be marked. */ | |
| b31867b6 AM |
6164 | fh = defined_code_entry (eh); |
| 6165 | if (fh != NULL) | |
| ccfa59ea AM |
6166 | { |
| 6167 | /* They also mark their opd section. */ | |
| 74f0fb50 | 6168 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6169 | |
| b31867b6 | 6170 | rsec = fh->elf.root.u.def.section; |
| ccfa59ea | 6171 | } |
| 8387904d AM |
6172 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6173 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6174 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6175 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 | 6176 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6177 | else |
| 1e2f5b6e AM |
6178 | rsec = h->root.u.def.section; |
| 6179 | break; | |
| 5bd4f169 AM |
6180 | |
| 6181 | case bfd_link_hash_common: | |
| 1e2f5b6e AM |
6182 | rsec = h->root.u.c.p->section; |
| 6183 | break; | |
| 5bd4f169 AM |
6184 | |
| 6185 | default: | |
| fb34365b | 6186 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 5bd4f169 AM |
6187 | } |
| 6188 | } | |
| 6189 | } | |
| 6190 | else | |
| 6191 | { | |
| 74f0fb50 | 6192 | struct _opd_sec_data *opd; |
| 1e2f5b6e AM |
6193 | |
| 6194 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 74f0fb50 AM |
6195 | opd = get_opd_info (rsec); |
| 6196 | if (opd != NULL && opd->func_sec != NULL) | |
| ccfa59ea | 6197 | { |
| 74f0fb50 | 6198 | rsec->gc_mark = 1; |
| ccfa59ea | 6199 | |
| 74f0fb50 | 6200 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
| ccfa59ea | 6201 | } |
| 5bd4f169 AM |
6202 | } |
| 6203 | ||
| 1e2f5b6e | 6204 | return rsec; |
| 5bd4f169 AM |
6205 | } |
| 6206 | ||
| 65f38f15 AM |
6207 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
| 6208 | section being removed. */ | |
| 5bd4f169 | 6209 | |
| b34976b6 | 6210 | static bfd_boolean |
| 4ce794b7 AM |
6211 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 6212 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 6213 | { |
| 411e1bfb | 6214 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
6215 | Elf_Internal_Shdr *symtab_hdr; |
| 6216 | struct elf_link_hash_entry **sym_hashes; | |
| 411e1bfb | 6217 | struct got_entry **local_got_ents; |
| 5bd4f169 | 6218 | const Elf_Internal_Rela *rel, *relend; |
| 5bd4f169 | 6219 | |
| 7dda2462 TG |
6220 | if (info->relocatable) |
| 6221 | return TRUE; | |
| 6222 | ||
| 680a3378 AM |
6223 | if ((sec->flags & SEC_ALLOC) == 0) |
| 6224 | return TRUE; | |
| 6225 | ||
| ec338859 AM |
6226 | elf_section_data (sec)->local_dynrel = NULL; |
| 6227 | ||
| 411e1bfb | 6228 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6229 | if (htab == NULL) |
| 6230 | return FALSE; | |
| 6231 | ||
| 0ffa91dd | 6232 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 6233 | sym_hashes = elf_sym_hashes (abfd); |
| 411e1bfb | 6234 | local_got_ents = elf_local_got_ents (abfd); |
| 5bd4f169 AM |
6235 | |
| 6236 | relend = relocs + sec->reloc_count; | |
| 6237 | for (rel = relocs; rel < relend; rel++) | |
| a33d1f77 AM |
6238 | { |
| 6239 | unsigned long r_symndx; | |
| 04c9666a | 6240 | enum elf_ppc64_reloc_type r_type; |
| 58ac9f71 | 6241 | struct elf_link_hash_entry *h = NULL; |
| f961d9dd | 6242 | unsigned char tls_type = 0; |
| 5bd4f169 | 6243 | |
| a33d1f77 | 6244 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 4ce794b7 | 6245 | r_type = ELF64_R_TYPE (rel->r_info); |
| 58ac9f71 AM |
6246 | if (r_symndx >= symtab_hdr->sh_info) |
| 6247 | { | |
| 6248 | struct ppc_link_hash_entry *eh; | |
| 6061a67d AM |
6249 | struct elf_dyn_relocs **pp; |
| 6250 | struct elf_dyn_relocs *p; | |
| 58ac9f71 AM |
6251 | |
| 6252 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 6253 | h = elf_follow_link (h); |
| 58ac9f71 AM |
6254 | eh = (struct ppc_link_hash_entry *) h; |
| 6255 | ||
| 6256 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
| 6257 | if (p->sec == sec) | |
| 6258 | { | |
| 6259 | /* Everything must go for SEC. */ | |
| 6260 | *pp = p->next; | |
| 6261 | break; | |
| 6262 | } | |
| 6263 | } | |
| 6264 | ||
| e054468f AM |
6265 | if (is_branch_reloc (r_type)) |
| 6266 | { | |
| 6267 | struct plt_entry **ifunc = NULL; | |
| 6268 | if (h != NULL) | |
| 6269 | { | |
| 6270 | if (h->type == STT_GNU_IFUNC) | |
| 6271 | ifunc = &h->plt.plist; | |
| 6272 | } | |
| 6273 | else if (local_got_ents != NULL) | |
| 6274 | { | |
| 6275 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 6276 | (local_got_ents + symtab_hdr->sh_info); | |
| f961d9dd | 6277 | unsigned char *local_got_tls_masks = (unsigned char *) |
| e054468f AM |
6278 | (local_plt + symtab_hdr->sh_info); |
| 6279 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
| 6280 | ifunc = local_plt + r_symndx; | |
| 6281 | } | |
| 6282 | if (ifunc != NULL) | |
| 6283 | { | |
| 6284 | struct plt_entry *ent; | |
| 6285 | ||
| 6286 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
| 6287 | if (ent->addend == rel->r_addend) | |
| 6288 | break; | |
| 6289 | if (ent == NULL) | |
| 6290 | abort (); | |
| 6291 | if (ent->plt.refcount > 0) | |
| 6292 | ent->plt.refcount -= 1; | |
| 6293 | continue; | |
| 6294 | } | |
| 6295 | } | |
| 6296 | ||
| a33d1f77 AM |
6297 | switch (r_type) |
| 6298 | { | |
| 411e1bfb AM |
6299 | case R_PPC64_GOT_TLSLD16: |
| 6300 | case R_PPC64_GOT_TLSLD16_LO: | |
| 6301 | case R_PPC64_GOT_TLSLD16_HI: | |
| 6302 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 6303 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
6304 | goto dogot; |
| 6305 | ||
| 6306 | case R_PPC64_GOT_TLSGD16: | |
| 6307 | case R_PPC64_GOT_TLSGD16_LO: | |
| 6308 | case R_PPC64_GOT_TLSGD16_HI: | |
| 6309 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 6310 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
6311 | goto dogot; |
| 6312 | ||
| 6313 | case R_PPC64_GOT_TPREL16_DS: | |
| 6314 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 6315 | case R_PPC64_GOT_TPREL16_HI: | |
| 6316 | case R_PPC64_GOT_TPREL16_HA: | |
| 6317 | tls_type = TLS_TLS | TLS_TPREL; | |
| 6318 | goto dogot; | |
| 6319 | ||
| 6320 | case R_PPC64_GOT_DTPREL16_DS: | |
| 6321 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 6322 | case R_PPC64_GOT_DTPREL16_HI: | |
| 6323 | case R_PPC64_GOT_DTPREL16_HA: | |
| 6324 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 6325 | goto dogot; | |
| 6326 | ||
| a33d1f77 AM |
6327 | case R_PPC64_GOT16: |
| 6328 | case R_PPC64_GOT16_DS: | |
| 6329 | case R_PPC64_GOT16_HA: | |
| 6330 | case R_PPC64_GOT16_HI: | |
| 6331 | case R_PPC64_GOT16_LO: | |
| 6332 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb AM |
6333 | dogot: |
| 6334 | { | |
| 6335 | struct got_entry *ent; | |
| 6336 | ||
| 58ac9f71 AM |
6337 | if (h != NULL) |
| 6338 | ent = h->got.glist; | |
| 411e1bfb AM |
6339 | else |
| 6340 | ent = local_got_ents[r_symndx]; | |
| 6341 | ||
| 6342 | for (; ent != NULL; ent = ent->next) | |
| 6343 | if (ent->addend == rel->r_addend | |
| e717da7e | 6344 | && ent->owner == abfd |
| 411e1bfb AM |
6345 | && ent->tls_type == tls_type) |
| 6346 | break; | |
| 6347 | if (ent == NULL) | |
| 6348 | abort (); | |
| 6349 | if (ent->got.refcount > 0) | |
| 6350 | ent->got.refcount -= 1; | |
| 6351 | } | |
| a33d1f77 | 6352 | break; |
| 65f38f15 | 6353 | |
| a33d1f77 AM |
6354 | case R_PPC64_PLT16_HA: |
| 6355 | case R_PPC64_PLT16_HI: | |
| 6356 | case R_PPC64_PLT16_LO: | |
| 6357 | case R_PPC64_PLT32: | |
| 6358 | case R_PPC64_PLT64: | |
| 721956f4 AM |
6359 | case R_PPC64_REL14: |
| 6360 | case R_PPC64_REL14_BRNTAKEN: | |
| 6361 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 | 6362 | case R_PPC64_REL24: |
| 58ac9f71 | 6363 | if (h != NULL) |
| 5d1634d7 | 6364 | { |
| 411e1bfb AM |
6365 | struct plt_entry *ent; |
| 6366 | ||
| 411e1bfb AM |
6367 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 6368 | if (ent->addend == rel->r_addend) | |
| 6369 | break; | |
| 7c6c1722 | 6370 | if (ent != NULL && ent->plt.refcount > 0) |
| 411e1bfb | 6371 | ent->plt.refcount -= 1; |
| 5d1634d7 | 6372 | } |
| e86ce104 | 6373 | break; |
| 5d1634d7 | 6374 | |
| a33d1f77 AM |
6375 | default: |
| 6376 | break; | |
| 6377 | } | |
| 6378 | } | |
| b34976b6 | 6379 | return TRUE; |
| 5bd4f169 AM |
6380 | } |
| 6381 | ||
| deb0e272 AM |
6382 | /* The maximum size of .sfpr. */ |
| 6383 | #define SFPR_MAX (218*4) | |
| 6384 | ||
| 6385 | struct sfpr_def_parms | |
| 6386 | { | |
| 699733f6 AM |
6387 | const char name[12]; |
| 6388 | unsigned char lo, hi; | |
| deb0e272 AM |
6389 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
| 6390 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
| 6391 | }; | |
| 6392 | ||
| 6393 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
| 6394 | ||
| 4dfe6ac6 | 6395 | static bfd_boolean |
| deb0e272 AM |
6396 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
| 6397 | { | |
| 6398 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6399 | unsigned int i; | |
| 6400 | size_t len = strlen (parm->name); | |
| 6401 | bfd_boolean writing = FALSE; | |
| 699733f6 | 6402 | char sym[16]; |
| deb0e272 | 6403 | |
| 4dfe6ac6 NC |
6404 | if (htab == NULL) |
| 6405 | return FALSE; | |
| 6406 | ||
| deb0e272 AM |
6407 | memcpy (sym, parm->name, len); |
| 6408 | sym[len + 2] = 0; | |
| 6409 | ||
| 6410 | for (i = parm->lo; i <= parm->hi; i++) | |
| 6411 | { | |
| 6412 | struct elf_link_hash_entry *h; | |
| 6413 | ||
| 6414 | sym[len + 0] = i / 10 + '0'; | |
| 6415 | sym[len + 1] = i % 10 + '0'; | |
| 6416 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
| 6417 | if (h != NULL | |
| f5385ebf | 6418 | && !h->def_regular) |
| deb0e272 AM |
6419 | { |
| 6420 | h->root.type = bfd_link_hash_defined; | |
| 6421 | h->root.u.def.section = htab->sfpr; | |
| 6422 | h->root.u.def.value = htab->sfpr->size; | |
| 6423 | h->type = STT_FUNC; | |
| f5385ebf | 6424 | h->def_regular = 1; |
| deb0e272 AM |
6425 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
| 6426 | writing = TRUE; | |
| 6427 | if (htab->sfpr->contents == NULL) | |
| 6428 | { | |
| 6429 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
| 6430 | if (htab->sfpr->contents == NULL) | |
| 6431 | return FALSE; | |
| 6432 | } | |
| 6433 | } | |
| 6434 | if (writing) | |
| 6435 | { | |
| 6436 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
| 6437 | if (i != parm->hi) | |
| 6438 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
| 6439 | else | |
| 6440 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
| 6441 | htab->sfpr->size = p - htab->sfpr->contents; | |
| 6442 | } | |
| 6443 | } | |
| 6444 | ||
| 6445 | return TRUE; | |
| 6446 | } | |
| 6447 | ||
| 6448 | static bfd_byte * | |
| 6449 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6450 | { | |
| 6451 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6452 | return p + 4; | |
| 6453 | } | |
| 6454 | ||
| 6455 | static bfd_byte * | |
| 6456 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6457 | { | |
| 6458 | p = savegpr0 (abfd, p, r); | |
| 6459 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
| 6460 | p = p + 4; | |
| 6461 | bfd_put_32 (abfd, BLR, p); | |
| 6462 | return p + 4; | |
| 6463 | } | |
| 6464 | ||
| 6465 | static bfd_byte * | |
| 6466 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6467 | { | |
| 6468 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6469 | return p + 4; | |
| 6470 | } | |
| 6471 | ||
| 6472 | static bfd_byte * | |
| 6473 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6474 | { | |
| 6475 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
| 6476 | p = p + 4; | |
| 6477 | p = restgpr0 (abfd, p, r); | |
| 6478 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6479 | p = p + 4; | |
| 6480 | if (r == 29) | |
| 6481 | { | |
| 6482 | p = restgpr0 (abfd, p, 30); | |
| 6483 | p = restgpr0 (abfd, p, 31); | |
| 6484 | } | |
| 6485 | bfd_put_32 (abfd, BLR, p); | |
| 6486 | return p + 4; | |
| 6487 | } | |
| 6488 | ||
| 6489 | static bfd_byte * | |
| 6490 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6491 | { | |
| 6492 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6493 | return p + 4; | |
| 6494 | } | |
| 6495 | ||
| 6496 | static bfd_byte * | |
| 6497 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6498 | { | |
| 6499 | p = savegpr1 (abfd, p, r); | |
| 6500 | bfd_put_32 (abfd, BLR, p); | |
| 6501 | return p + 4; | |
| 6502 | } | |
| 6503 | ||
| 6504 | static bfd_byte * | |
| 6505 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6506 | { | |
| 6507 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6508 | return p + 4; | |
| 6509 | } | |
| 6510 | ||
| 6511 | static bfd_byte * | |
| 6512 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6513 | { | |
| 6514 | p = restgpr1 (abfd, p, r); | |
| 6515 | bfd_put_32 (abfd, BLR, p); | |
| 6516 | return p + 4; | |
| 6517 | } | |
| 6518 | ||
| 6519 | static bfd_byte * | |
| 6520 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
| 6521 | { | |
| 6522 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6523 | return p + 4; | |
| 6524 | } | |
| 6525 | ||
| 6526 | static bfd_byte * | |
| 6527 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6528 | { | |
| 6529 | p = savefpr (abfd, p, r); | |
| 6530 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
| 6531 | p = p + 4; | |
| 6532 | bfd_put_32 (abfd, BLR, p); | |
| 6533 | return p + 4; | |
| 6534 | } | |
| 6535 | ||
| 6536 | static bfd_byte * | |
| 6537 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
| 6538 | { | |
| 6539 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6540 | return p + 4; | |
| 6541 | } | |
| 6542 | ||
| 6543 | static bfd_byte * | |
| 6544 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6545 | { | |
| 6546 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
| 6547 | p = p + 4; | |
| 6548 | p = restfpr (abfd, p, r); | |
| 6549 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6550 | p = p + 4; | |
| 6551 | if (r == 29) | |
| 6552 | { | |
| 6553 | p = restfpr (abfd, p, 30); | |
| 6554 | p = restfpr (abfd, p, 31); | |
| 6555 | } | |
| 6556 | bfd_put_32 (abfd, BLR, p); | |
| 6557 | return p + 4; | |
| 6558 | } | |
| 6559 | ||
| 6560 | static bfd_byte * | |
| 6561 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6562 | { | |
| 6563 | p = savefpr (abfd, p, r); | |
| 6564 | bfd_put_32 (abfd, BLR, p); | |
| 6565 | return p + 4; | |
| 6566 | } | |
| 6567 | ||
| 6568 | static bfd_byte * | |
| 6569 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6570 | { | |
| 6571 | p = restfpr (abfd, p, r); | |
| 6572 | bfd_put_32 (abfd, BLR, p); | |
| 6573 | return p + 4; | |
| 6574 | } | |
| 6575 | ||
| 6576 | static bfd_byte * | |
| 6577 | savevr (bfd *abfd, bfd_byte *p, int r) | |
| 6578 | { | |
| 6579 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6580 | p = p + 4; | |
| 6581 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
| 6582 | return p + 4; | |
| 6583 | } | |
| 6584 | ||
| 6585 | static bfd_byte * | |
| 6586 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6587 | { | |
| 6588 | p = savevr (abfd, p, r); | |
| 6589 | bfd_put_32 (abfd, BLR, p); | |
| 6590 | return p + 4; | |
| 6591 | } | |
| 6592 | ||
| 6593 | static bfd_byte * | |
| 6594 | restvr (bfd *abfd, bfd_byte *p, int r) | |
| 6595 | { | |
| 6596 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6597 | p = p + 4; | |
| 6598 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
| 6599 | return p + 4; | |
| 6600 | } | |
| 6601 | ||
| 6602 | static bfd_byte * | |
| 6603 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6604 | { | |
| 6605 | p = restvr (abfd, p, r); | |
| 6606 | bfd_put_32 (abfd, BLR, p); | |
| 6607 | return p + 4; | |
| 6608 | } | |
| 6609 | ||
| e86ce104 AM |
6610 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
| 6611 | information on function code symbol entries to their corresponding | |
| 6612 | function descriptor symbol entries. */ | |
| deb0e272 | 6613 | |
| b34976b6 | 6614 | static bfd_boolean |
| 4ce794b7 | 6615 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 6616 | { |
| e86ce104 | 6617 | struct bfd_link_info *info; |
| 65f38f15 | 6618 | struct ppc_link_hash_table *htab; |
| 411e1bfb | 6619 | struct plt_entry *ent; |
| 50bc7936 AM |
6620 | struct ppc_link_hash_entry *fh; |
| 6621 | struct ppc_link_hash_entry *fdh; | |
| 6622 | bfd_boolean force_local; | |
| 5bd4f169 | 6623 | |
| 50bc7936 AM |
6624 | fh = (struct ppc_link_hash_entry *) h; |
| 6625 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
| b34976b6 | 6626 | return TRUE; |
| e86ce104 | 6627 | |
| 4ce794b7 | 6628 | info = inf; |
| 65f38f15 | 6629 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6630 | if (htab == NULL) |
| 6631 | return FALSE; | |
| 5bd4f169 | 6632 | |
| c09bdfe5 AM |
6633 | /* Resolve undefined references to dot-symbols as the value |
| 6634 | in the function descriptor, if we have one in a regular object. | |
| 6635 | This is to satisfy cases like ".quad .foo". Calls to functions | |
| 6636 | in dynamic objects are handled elsewhere. */ | |
| 6637 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
| 6638 | && fh->was_undefined | |
| b31867b6 AM |
6639 | && (fdh = defined_func_desc (fh)) != NULL |
| 6640 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
| 6641 | && opd_entry_value (fdh->elf.root.u.def.section, | |
| 6642 | fdh->elf.root.u.def.value, | |
| c09bdfe5 | 6643 | &fh->elf.root.u.def.section, |
| aef36ac1 | 6644 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
| c09bdfe5 | 6645 | { |
| b31867b6 | 6646 | fh->elf.root.type = fdh->elf.root.type; |
| f5385ebf | 6647 | fh->elf.forced_local = 1; |
| b31867b6 AM |
6648 | fh->elf.def_regular = fdh->elf.def_regular; |
| 6649 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
| c09bdfe5 AM |
6650 | } |
| 6651 | ||
| e86ce104 AM |
6652 | /* If this is a function code symbol, transfer dynamic linking |
| 6653 | information to the function descriptor symbol. */ | |
| 50bc7936 | 6654 | if (!fh->is_func) |
| b34976b6 | 6655 | return TRUE; |
| e86ce104 | 6656 | |
| 50bc7936 | 6657 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
6658 | if (ent->plt.refcount > 0) |
| 6659 | break; | |
| 50bc7936 AM |
6660 | if (ent == NULL |
| 6661 | || fh->elf.root.root.string[0] != '.' | |
| 6662 | || fh->elf.root.root.string[1] == '\0') | |
| 6663 | return TRUE; | |
| 5bd4f169 | 6664 | |
| 50bc7936 AM |
6665 | /* Find the corresponding function descriptor symbol. Create it |
| 6666 | as undefined if necessary. */ | |
| 5bd4f169 | 6667 | |
| b31867b6 | 6668 | fdh = lookup_fdh (fh, htab); |
| 50bc7936 | 6669 | if (fdh == NULL |
| df131623 | 6670 | && !info->executable |
| 50bc7936 AM |
6671 | && (fh->elf.root.type == bfd_link_hash_undefined |
| 6672 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
| 6673 | { | |
| 908b32fc | 6674 | fdh = make_fdh (info, fh); |
| bb700d78 AM |
6675 | if (fdh == NULL) |
| 6676 | return FALSE; | |
| 50bc7936 | 6677 | } |
| 648cca2c | 6678 | |
| 908b32fc | 6679 | /* Fake function descriptors are made undefweak. If the function |
| 433817dd AM |
6680 | code symbol is strong undefined, make the fake sym the same. |
| 6681 | If the function code symbol is defined, then force the fake | |
| 6682 | descriptor local; We can't support overriding of symbols in a | |
| 6683 | shared library on a fake descriptor. */ | |
| 908b32fc AM |
6684 | |
| 6685 | if (fdh != NULL | |
| 6686 | && fdh->fake | |
| 433817dd | 6687 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
| 908b32fc | 6688 | { |
| 433817dd AM |
6689 | if (fh->elf.root.type == bfd_link_hash_undefined) |
| 6690 | { | |
| 6691 | fdh->elf.root.type = bfd_link_hash_undefined; | |
| 6692 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
| 6693 | } | |
| 6694 | else if (fh->elf.root.type == bfd_link_hash_defined | |
| 6695 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6696 | { | |
| 6697 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
| 6698 | } | |
| 908b32fc AM |
6699 | } |
| 6700 | ||
| 50bc7936 | 6701 | if (fdh != NULL |
| f5385ebf | 6702 | && !fdh->elf.forced_local |
| df131623 | 6703 | && (!info->executable |
| f5385ebf AM |
6704 | || fdh->elf.def_dynamic |
| 6705 | || fdh->elf.ref_dynamic | |
| 50bc7936 AM |
6706 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
| 6707 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
| 6708 | { | |
| 6709 | if (fdh->elf.dynindx == -1) | |
| c152c796 | 6710 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
| 50bc7936 | 6711 | return FALSE; |
| f5385ebf AM |
6712 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
| 6713 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
| 6714 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
| 6715 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
| 50bc7936 | 6716 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
| e86ce104 | 6717 | { |
| 40d16e0b | 6718 | move_plt_plist (fh, fdh); |
| f5385ebf | 6719 | fdh->elf.needs_plt = 1; |
| e86ce104 | 6720 | } |
| 50bc7936 | 6721 | fdh->is_func_descriptor = 1; |
| 34814b9f AM |
6722 | fdh->oh = fh; |
| 6723 | fh->oh = fdh; | |
| e86ce104 AM |
6724 | } |
| 6725 | ||
| 50bc7936 AM |
6726 | /* Now that the info is on the function descriptor, clear the |
| 6727 | function code sym info. Any function code syms for which we | |
| 6728 | don't have a definition in a regular file, we force local. | |
| 6729 | This prevents a shared library from exporting syms that have | |
| 6730 | been imported from another library. Function code syms that | |
| 6731 | are really in the library we must leave global to prevent the | |
| 6732 | linker dragging in a definition from a static library. */ | |
| 93f3fa99 AM |
6733 | force_local = (!fh->elf.def_regular |
| 6734 | || fdh == NULL | |
| 6735 | || !fdh->elf.def_regular | |
| 6736 | || fdh->elf.forced_local); | |
| 50bc7936 AM |
6737 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| 6738 | ||
| b34976b6 | 6739 | return TRUE; |
| e86ce104 | 6740 | } |
| 40b8271b | 6741 | |
| e86ce104 | 6742 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
| 82bd7b59 AM |
6743 | this hook to a) provide some gcc support functions, and b) transfer |
| 6744 | dynamic linking information gathered so far on function code symbol | |
| 6745 | entries, to their corresponding function descriptor symbol entries. */ | |
| deb0e272 | 6746 | |
| b34976b6 | 6747 | static bfd_boolean |
| 4ce794b7 AM |
6748 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
| 6749 | struct bfd_link_info *info) | |
| e86ce104 AM |
6750 | { |
| 6751 | struct ppc_link_hash_table *htab; | |
| 82bd7b59 | 6752 | unsigned int i; |
| 27fc25a1 | 6753 | static const struct sfpr_def_parms funcs[] = |
| deb0e272 AM |
6754 | { |
| 6755 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
| 6756 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
| 6757 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
| 6758 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
| 6759 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
| 6760 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
| 6761 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
| 6762 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
| 6763 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
| 6764 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
| 6765 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
| 6766 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
| 6767 | }; | |
| e86ce104 AM |
6768 | |
| 6769 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
6770 | if (htab == NULL) |
| 6771 | return FALSE; | |
| 6772 | ||
| 5295321c AM |
6773 | if (!info->relocatable |
| 6774 | && htab->elf.hgot != NULL) | |
| 6775 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
| c66bb0ee | 6776 | |
| 82bd7b59 AM |
6777 | if (htab->sfpr == NULL) |
| 6778 | /* We don't have any relocs. */ | |
| b34976b6 | 6779 | return TRUE; |
| 82bd7b59 | 6780 | |
| deb0e272 AM |
6781 | /* Provide any missing _save* and _rest* functions. */ |
| 6782 | htab->sfpr->size = 0; | |
| 27fc25a1 AM |
6783 | if (!info->relocatable) |
| 6784 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
| 6785 | if (!sfpr_define (info, &funcs[i])) | |
| 6786 | return FALSE; | |
| 82bd7b59 | 6787 | |
| 4ce794b7 | 6788 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
| 805fc799 | 6789 | |
| eea6121a | 6790 | if (htab->sfpr->size == 0) |
| 8423293d | 6791 | htab->sfpr->flags |= SEC_EXCLUDE; |
| 82bd7b59 | 6792 | |
| b34976b6 | 6793 | return TRUE; |
| e86ce104 AM |
6794 | } |
| 6795 | ||
| 6796 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
| 6797 | regular object. The current definition is in some section of the | |
| 6798 | dynamic object, but we're not including those sections. We have to | |
| 6799 | change the definition to something the rest of the link can | |
| 6800 | understand. */ | |
| 6801 | ||
| b34976b6 | 6802 | static bfd_boolean |
| 4ce794b7 AM |
6803 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 6804 | struct elf_link_hash_entry *h) | |
| e86ce104 AM |
6805 | { |
| 6806 | struct ppc_link_hash_table *htab; | |
| e86ce104 | 6807 | asection *s; |
| e86ce104 AM |
6808 | |
| 6809 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
6810 | if (htab == NULL) |
| 6811 | return FALSE; | |
| e86ce104 AM |
6812 | |
| 6813 | /* Deal with function syms. */ | |
| 6814 | if (h->type == STT_FUNC | |
| e054468f | 6815 | || h->type == STT_GNU_IFUNC |
| f5385ebf | 6816 | || h->needs_plt) |
| e86ce104 AM |
6817 | { |
| 6818 | /* Clear procedure linkage table information for any symbol that | |
| 6819 | won't need a .plt entry. */ | |
| 411e1bfb AM |
6820 | struct plt_entry *ent; |
| 6821 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
| 6822 | if (ent->plt.refcount > 0) | |
| 6823 | break; | |
| 8387904d | 6824 | if (ent == NULL |
| e054468f AM |
6825 | || (h->type != STT_GNU_IFUNC |
| 6826 | && (SYMBOL_CALLS_LOCAL (info, h) | |
| 6827 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
| 6828 | && h->root.type == bfd_link_hash_undefweak)))) | |
| 40b8271b | 6829 | { |
| 411e1bfb | 6830 | h->plt.plist = NULL; |
| f5385ebf | 6831 | h->needs_plt = 0; |
| 40b8271b | 6832 | } |
| 5bd4f169 | 6833 | } |
| bbd7ec4a | 6834 | else |
| 411e1bfb | 6835 | h->plt.plist = NULL; |
| 5bd4f169 AM |
6836 | |
| 6837 | /* If this is a weak symbol, and there is a real definition, the | |
| 6838 | processor independent code will have arranged for us to see the | |
| 6839 | real definition first, and we can just use the same value. */ | |
| f6e332e6 | 6840 | if (h->u.weakdef != NULL) |
| 5bd4f169 | 6841 | { |
| f6e332e6 AM |
6842 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 6843 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
| 6844 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
| 6845 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
| a23b6845 | 6846 | if (ELIMINATE_COPY_RELOCS) |
| f6e332e6 | 6847 | h->non_got_ref = h->u.weakdef->non_got_ref; |
| b34976b6 | 6848 | return TRUE; |
| 5bd4f169 AM |
6849 | } |
| 6850 | ||
| 5bd4f169 AM |
6851 | /* If we are creating a shared library, we must presume that the |
| 6852 | only references to the symbol are via the global offset table. | |
| 6853 | For such cases we need not do anything here; the relocations will | |
| 6854 | be handled correctly by relocate_section. */ | |
| 6855 | if (info->shared) | |
| b34976b6 | 6856 | return TRUE; |
| 5bd4f169 | 6857 | |
| 65f38f15 AM |
6858 | /* If there are no references to this symbol that do not use the |
| 6859 | GOT, we don't need to generate a copy reloc. */ | |
| f5385ebf | 6860 | if (!h->non_got_ref) |
| b34976b6 | 6861 | return TRUE; |
| 65f38f15 | 6862 | |
| b186458a JJ |
6863 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
| 6864 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
| 6865 | return TRUE; | |
| 6866 | ||
| f4656909 | 6867 | if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 | 6868 | { |
| f4656909 | 6869 | struct ppc_link_hash_entry * eh; |
| 6061a67d | 6870 | struct elf_dyn_relocs *p; |
| 65f38f15 | 6871 | |
| f4656909 AM |
6872 | eh = (struct ppc_link_hash_entry *) h; |
| 6873 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 6874 | { | |
| 6875 | s = p->sec->output_section; | |
| 6876 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 6877 | break; | |
| 6878 | } | |
| 6879 | ||
| 6880 | /* If we didn't find any dynamic relocs in read-only sections, then | |
| 6881 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
| 6882 | if (p == NULL) | |
| 6883 | { | |
| f5385ebf | 6884 | h->non_got_ref = 0; |
| f4656909 AM |
6885 | return TRUE; |
| 6886 | } | |
| 65f38f15 AM |
6887 | } |
| 6888 | ||
| 5d35169e | 6889 | if (h->plt.plist != NULL) |
| 97b639ba AM |
6890 | { |
| 6891 | /* We should never get here, but unfortunately there are versions | |
| 6892 | of gcc out there that improperly (for this ABI) put initialized | |
| 6893 | function pointers, vtable refs and suchlike in read-only | |
| 6894 | sections. Allow them to proceed, but warn that this might | |
| 6895 | break at runtime. */ | |
| 25f53a85 | 6896 | info->callbacks->einfo |
| bc30df16 | 6897 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
| 25f53a85 | 6898 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
| 97b639ba AM |
6899 | h->root.root.string); |
| 6900 | } | |
| 5d35169e AM |
6901 | |
| 6902 | /* This is a reference to a symbol defined by a dynamic object which | |
| 6903 | is not a function. */ | |
| 6904 | ||
| 5bd4f169 AM |
6905 | /* We must allocate the symbol in our .dynbss section, which will |
| 6906 | become part of the .bss section of the executable. There will be | |
| 6907 | an entry for this symbol in the .dynsym section. The dynamic | |
| 6908 | object will contain position independent code, so all references | |
| 6909 | from the dynamic object to this symbol will go through the global | |
| 6910 | offset table. The dynamic linker will use the .dynsym entry to | |
| 6911 | determine the address it must put in the global offset table, so | |
| 6912 | both the dynamic object and the regular object will refer to the | |
| 6913 | same memory location for the variable. */ | |
| 5bd4f169 | 6914 | |
| 04c9666a AM |
6915 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
| 6916 | to copy the initial value out of the dynamic object and into the | |
| 5bd4f169 AM |
6917 | runtime process image. We need to remember the offset into the |
| 6918 | .rela.bss section we are going to use. */ | |
| 1d7e9d18 | 6919 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
| 5bd4f169 | 6920 | { |
| eea6121a | 6921 | htab->relbss->size += sizeof (Elf64_External_Rela); |
| f5385ebf | 6922 | h->needs_copy = 1; |
| 5bd4f169 AM |
6923 | } |
| 6924 | ||
| 4ce794b7 | 6925 | s = htab->dynbss; |
| 5bd4f169 | 6926 | |
| 027297b7 | 6927 | return _bfd_elf_adjust_dynamic_copy (h, s); |
| 5bd4f169 AM |
6928 | } |
| 6929 | ||
| e86ce104 AM |
6930 | /* If given a function descriptor symbol, hide both the function code |
| 6931 | sym and the descriptor. */ | |
| 6932 | static void | |
| 4ce794b7 AM |
6933 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
| 6934 | struct elf_link_hash_entry *h, | |
| 6935 | bfd_boolean force_local) | |
| e86ce104 | 6936 | { |
| 34814b9f | 6937 | struct ppc_link_hash_entry *eh; |
| e86ce104 AM |
6938 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
| 6939 | ||
| 34814b9f AM |
6940 | eh = (struct ppc_link_hash_entry *) h; |
| 6941 | if (eh->is_func_descriptor) | |
| e86ce104 | 6942 | { |
| 34814b9f | 6943 | struct ppc_link_hash_entry *fh = eh->oh; |
| e86ce104 | 6944 | |
| 721956f4 | 6945 | if (fh == NULL) |
| d1329ca3 AM |
6946 | { |
| 6947 | const char *p, *q; | |
| 6948 | struct ppc_link_hash_table *htab; | |
| 6949 | char save; | |
| 6950 | ||
| 6951 | /* We aren't supposed to use alloca in BFD because on | |
| 6952 | systems which do not have alloca the version in libiberty | |
| 6953 | calls xmalloc, which might cause the program to crash | |
| 6954 | when it runs out of memory. This function doesn't have a | |
| 6955 | return status, so there's no way to gracefully return an | |
| 6956 | error. So cheat. We know that string[-1] can be safely | |
| 34814b9f AM |
6957 | accessed; It's either a string in an ELF string table, |
| 6958 | or allocated in an objalloc structure. */ | |
| d1329ca3 | 6959 | |
| 34814b9f | 6960 | p = eh->elf.root.root.string - 1; |
| d1329ca3 AM |
6961 | save = *p; |
| 6962 | *(char *) p = '.'; | |
| 6963 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
6964 | if (htab == NULL) |
| 6965 | return; | |
| 6966 | ||
| 34814b9f AM |
6967 | fh = (struct ppc_link_hash_entry *) |
| 6968 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
6969 | *(char *) p = save; |
| 6970 | ||
| 6971 | /* Unfortunately, if it so happens that the string we were | |
| 6972 | looking for was allocated immediately before this string, | |
| 6973 | then we overwrote the string terminator. That's the only | |
| 6974 | reason the lookup should fail. */ | |
| 6975 | if (fh == NULL) | |
| 6976 | { | |
| 34814b9f AM |
6977 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
| 6978 | while (q >= eh->elf.root.root.string && *q == *p) | |
| d1329ca3 | 6979 | --q, --p; |
| 34814b9f AM |
6980 | if (q < eh->elf.root.root.string && *p == '.') |
| 6981 | fh = (struct ppc_link_hash_entry *) | |
| 6982 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
6983 | } |
| 6984 | if (fh != NULL) | |
| 6985 | { | |
| 34814b9f AM |
6986 | eh->oh = fh; |
| 6987 | fh->oh = eh; | |
| d1329ca3 AM |
6988 | } |
| 6989 | } | |
| e86ce104 | 6990 | if (fh != NULL) |
| 34814b9f | 6991 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| e86ce104 AM |
6992 | } |
| 6993 | } | |
| 6994 | ||
| 411e1bfb | 6995 | static bfd_boolean |
| 8843416a AM |
6996 | get_sym_h (struct elf_link_hash_entry **hp, |
| 6997 | Elf_Internal_Sym **symp, | |
| 6998 | asection **symsecp, | |
| f961d9dd | 6999 | unsigned char **tls_maskp, |
| 8843416a AM |
7000 | Elf_Internal_Sym **locsymsp, |
| 7001 | unsigned long r_symndx, | |
| 7002 | bfd *ibfd) | |
| 411e1bfb | 7003 | { |
| 0ffa91dd | 7004 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
| 411e1bfb AM |
7005 | |
| 7006 | if (r_symndx >= symtab_hdr->sh_info) | |
| 7007 | { | |
| 7008 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
| 7009 | struct elf_link_hash_entry *h; | |
| 7010 | ||
| 7011 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 7012 | h = elf_follow_link (h); |
| 411e1bfb AM |
7013 | |
| 7014 | if (hp != NULL) | |
| 7015 | *hp = h; | |
| 7016 | ||
| 7017 | if (symp != NULL) | |
| 7018 | *symp = NULL; | |
| 7019 | ||
| 7020 | if (symsecp != NULL) | |
| 7021 | { | |
| 7022 | asection *symsec = NULL; | |
| 7023 | if (h->root.type == bfd_link_hash_defined | |
| 7024 | || h->root.type == bfd_link_hash_defweak) | |
| 7025 | symsec = h->root.u.def.section; | |
| 7026 | *symsecp = symsec; | |
| 7027 | } | |
| 7028 | ||
| e7b938ca | 7029 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7030 | { |
| 7031 | struct ppc_link_hash_entry *eh; | |
| 7032 | ||
| 7033 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 7034 | *tls_maskp = &eh->tls_mask; |
| 411e1bfb AM |
7035 | } |
| 7036 | } | |
| 7037 | else | |
| 7038 | { | |
| 7039 | Elf_Internal_Sym *sym; | |
| 7040 | Elf_Internal_Sym *locsyms = *locsymsp; | |
| 7041 | ||
| 7042 | if (locsyms == NULL) | |
| 7043 | { | |
| 7044 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 7045 | if (locsyms == NULL) | |
| 7046 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
| 7047 | symtab_hdr->sh_info, | |
| 7048 | 0, NULL, NULL, NULL); | |
| 7049 | if (locsyms == NULL) | |
| 7050 | return FALSE; | |
| 7051 | *locsymsp = locsyms; | |
| 7052 | } | |
| 7053 | sym = locsyms + r_symndx; | |
| 7054 | ||
| 7055 | if (hp != NULL) | |
| 7056 | *hp = NULL; | |
| 7057 | ||
| 7058 | if (symp != NULL) | |
| 7059 | *symp = sym; | |
| 7060 | ||
| 7061 | if (symsecp != NULL) | |
| cb33740c | 7062 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
| 411e1bfb | 7063 | |
| e7b938ca | 7064 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7065 | { |
| 7066 | struct got_entry **lgot_ents; | |
| f961d9dd | 7067 | unsigned char *tls_mask; |
| 411e1bfb | 7068 | |
| e7b938ca | 7069 | tls_mask = NULL; |
| 411e1bfb AM |
7070 | lgot_ents = elf_local_got_ents (ibfd); |
| 7071 | if (lgot_ents != NULL) | |
| 7072 | { | |
| e054468f AM |
7073 | struct plt_entry **local_plt = (struct plt_entry **) |
| 7074 | (lgot_ents + symtab_hdr->sh_info); | |
| f961d9dd | 7075 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 7076 | (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 7077 | tls_mask = &lgot_masks[r_symndx]; |
| 411e1bfb | 7078 | } |
| e7b938ca | 7079 | *tls_maskp = tls_mask; |
| 411e1bfb AM |
7080 | } |
| 7081 | } | |
| 7082 | return TRUE; | |
| 7083 | } | |
| 7084 | ||
| e7b938ca | 7085 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
| 951fd09b | 7086 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
| ad8e1ba5 | 7087 | type suitable for optimization, and 1 otherwise. */ |
| 951fd09b AM |
7088 | |
| 7089 | static int | |
| f961d9dd | 7090 | get_tls_mask (unsigned char **tls_maskp, |
| 3a71aa26 AM |
7091 | unsigned long *toc_symndx, |
| 7092 | bfd_vma *toc_addend, | |
| 0d4792f7 | 7093 | Elf_Internal_Sym **locsymsp, |
| 3a71aa26 AM |
7094 | const Elf_Internal_Rela *rel, |
| 7095 | bfd *ibfd) | |
| 411e1bfb AM |
7096 | { |
| 7097 | unsigned long r_symndx; | |
| 0d4792f7 | 7098 | int next_r; |
| 411e1bfb AM |
7099 | struct elf_link_hash_entry *h; |
| 7100 | Elf_Internal_Sym *sym; | |
| 7101 | asection *sec; | |
| 7102 | bfd_vma off; | |
| 7103 | ||
| 7104 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| e7b938ca | 7105 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
| 951fd09b | 7106 | return 0; |
| 411e1bfb | 7107 | |
| e7b938ca | 7108 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
| 411e1bfb | 7109 | || sec == NULL |
| 6bee8834 | 7110 | || ppc64_elf_section_data (sec) == NULL |
| 7c8fe5c4 | 7111 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
| 951fd09b | 7112 | return 1; |
| 411e1bfb AM |
7113 | |
| 7114 | /* Look inside a TOC section too. */ | |
| 7115 | if (h != NULL) | |
| 7116 | { | |
| 7117 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
| 7118 | off = h->root.u.def.value; | |
| 7119 | } | |
| 7120 | else | |
| 7121 | off = sym->st_value; | |
| 7122 | off += rel->r_addend; | |
| 7123 | BFD_ASSERT (off % 8 == 0); | |
| 3a71aa26 AM |
7124 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
| 7125 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
| 0d4792f7 AM |
7126 | if (toc_symndx != NULL) |
| 7127 | *toc_symndx = r_symndx; | |
| 3a71aa26 AM |
7128 | if (toc_addend != NULL) |
| 7129 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
| 7130 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
| 7131 | return 0; | |
| 854b41e7 | 7132 | if ((h == NULL || is_static_defined (h)) |
| 0d4792f7 AM |
7133 | && (next_r == -1 || next_r == -2)) |
| 7134 | return 1 - next_r; | |
| 951fd09b | 7135 | return 1; |
| 411e1bfb AM |
7136 | } |
| 7137 | ||
| 3b421ab3 AM |
7138 | /* Find (or create) an entry in the tocsave hash table. */ |
| 7139 | ||
| 7140 | static struct tocsave_entry * | |
| 7141 | tocsave_find (struct ppc_link_hash_table *htab, | |
| 7142 | enum insert_option insert, | |
| 7143 | Elf_Internal_Sym **local_syms, | |
| 7144 | const Elf_Internal_Rela *irela, | |
| 7145 | bfd *ibfd) | |
| 7146 | { | |
| 7147 | unsigned long r_indx; | |
| 7148 | struct elf_link_hash_entry *h; | |
| 7149 | Elf_Internal_Sym *sym; | |
| 7150 | struct tocsave_entry ent, *p; | |
| 7151 | hashval_t hash; | |
| 7152 | struct tocsave_entry **slot; | |
| 7153 | ||
| 7154 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 7155 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
| 7156 | return NULL; | |
| 7157 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
| 7158 | { | |
| 7159 | (*_bfd_error_handler) | |
| 7160 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
| 7161 | return NULL; | |
| 7162 | } | |
| 7163 | ||
| 7164 | if (h != NULL) | |
| 7165 | ent.offset = h->root.u.def.value; | |
| 7166 | else | |
| 7167 | ent.offset = sym->st_value; | |
| 7168 | ent.offset += irela->r_addend; | |
| 7169 | ||
| 7170 | hash = tocsave_htab_hash (&ent); | |
| 7171 | slot = ((struct tocsave_entry **) | |
| 7172 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
| 7173 | if (slot == NULL) | |
| 7174 | return NULL; | |
| 7175 | ||
| 7176 | if (*slot == NULL) | |
| 7177 | { | |
| 7178 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
| 7179 | if (p == NULL) | |
| 7180 | return NULL; | |
| 7181 | *p = ent; | |
| 7182 | *slot = p; | |
| 7183 | } | |
| 7184 | return *slot; | |
| 7185 | } | |
| 7186 | ||
| 754021d0 | 7187 | /* Adjust all global syms defined in opd sections. In gcc generated |
| 8387904d | 7188 | code for the old ABI, these will already have been done. */ |
| 754021d0 AM |
7189 | |
| 7190 | static bfd_boolean | |
| 7191 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 7192 | { | |
| 7193 | struct ppc_link_hash_entry *eh; | |
| 7194 | asection *sym_sec; | |
| 74f0fb50 | 7195 | struct _opd_sec_data *opd; |
| 754021d0 AM |
7196 | |
| 7197 | if (h->root.type == bfd_link_hash_indirect) | |
| 7198 | return TRUE; | |
| 7199 | ||
| 754021d0 AM |
7200 | if (h->root.type != bfd_link_hash_defined |
| 7201 | && h->root.type != bfd_link_hash_defweak) | |
| 7202 | return TRUE; | |
| 7203 | ||
| 7204 | eh = (struct ppc_link_hash_entry *) h; | |
| 7205 | if (eh->adjust_done) | |
| 7206 | return TRUE; | |
| 7207 | ||
| 7208 | sym_sec = eh->elf.root.u.def.section; | |
| 74f0fb50 AM |
7209 | opd = get_opd_info (sym_sec); |
| 7210 | if (opd != NULL && opd->adjust != NULL) | |
| 754021d0 | 7211 | { |
| 74f0fb50 | 7212 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
| 4025353c AM |
7213 | if (adjust == -1) |
| 7214 | { | |
| 7215 | /* This entry has been deleted. */ | |
| b3fac117 | 7216 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
| 81688140 AM |
7217 | if (dsec == NULL) |
| 7218 | { | |
| 7219 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
| dbaa2011 | 7220 | if (discarded_section (dsec)) |
| 81688140 | 7221 | { |
| b3fac117 | 7222 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
| 81688140 AM |
7223 | break; |
| 7224 | } | |
| 7225 | } | |
| 4025353c | 7226 | eh->elf.root.u.def.value = 0; |
| 81688140 | 7227 | eh->elf.root.u.def.section = dsec; |
| 4025353c AM |
7228 | } |
| 7229 | else | |
| 7230 | eh->elf.root.u.def.value += adjust; | |
| 754021d0 AM |
7231 | eh->adjust_done = 1; |
| 7232 | } | |
| 7233 | return TRUE; | |
| 7234 | } | |
| 7235 | ||
| 8c1d1bb8 | 7236 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
| 19e08130 | 7237 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
| 8c1d1bb8 AM |
7238 | have already been determined. */ |
| 7239 | ||
| 7240 | static bfd_boolean | |
| 7241 | dec_dynrel_count (bfd_vma r_info, | |
| 7242 | asection *sec, | |
| 7243 | struct bfd_link_info *info, | |
| 7244 | Elf_Internal_Sym **local_syms, | |
| 7245 | struct elf_link_hash_entry *h, | |
| 19e08130 | 7246 | Elf_Internal_Sym *sym) |
| 8c1d1bb8 AM |
7247 | { |
| 7248 | enum elf_ppc64_reloc_type r_type; | |
| 19e08130 | 7249 | asection *sym_sec = NULL; |
| 8c1d1bb8 AM |
7250 | |
| 7251 | /* Can this reloc be dynamic? This switch, and later tests here | |
| 7252 | should be kept in sync with the code in check_relocs. */ | |
| 7253 | r_type = ELF64_R_TYPE (r_info); | |
| 7254 | switch (r_type) | |
| 7255 | { | |
| 7256 | default: | |
| 7257 | return TRUE; | |
| 7258 | ||
| 7259 | case R_PPC64_TPREL16: | |
| 7260 | case R_PPC64_TPREL16_LO: | |
| 7261 | case R_PPC64_TPREL16_HI: | |
| 7262 | case R_PPC64_TPREL16_HA: | |
| 7263 | case R_PPC64_TPREL16_DS: | |
| 7264 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
7265 | case R_PPC64_TPREL16_HIGH: |
| 7266 | case R_PPC64_TPREL16_HIGHA: | |
| 8c1d1bb8 AM |
7267 | case R_PPC64_TPREL16_HIGHER: |
| 7268 | case R_PPC64_TPREL16_HIGHERA: | |
| 7269 | case R_PPC64_TPREL16_HIGHEST: | |
| 7270 | case R_PPC64_TPREL16_HIGHESTA: | |
| 7271 | if (!info->shared) | |
| 7272 | return TRUE; | |
| 7273 | ||
| 7274 | case R_PPC64_TPREL64: | |
| 7275 | case R_PPC64_DTPMOD64: | |
| 7276 | case R_PPC64_DTPREL64: | |
| 7277 | case R_PPC64_ADDR64: | |
| 7278 | case R_PPC64_REL30: | |
| 7279 | case R_PPC64_REL32: | |
| 7280 | case R_PPC64_REL64: | |
| 7281 | case R_PPC64_ADDR14: | |
| 7282 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 7283 | case R_PPC64_ADDR14_BRTAKEN: | |
| 7284 | case R_PPC64_ADDR16: | |
| 7285 | case R_PPC64_ADDR16_DS: | |
| 7286 | case R_PPC64_ADDR16_HA: | |
| 7287 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
7288 | case R_PPC64_ADDR16_HIGH: |
| 7289 | case R_PPC64_ADDR16_HIGHA: | |
| 8c1d1bb8 AM |
7290 | case R_PPC64_ADDR16_HIGHER: |
| 7291 | case R_PPC64_ADDR16_HIGHERA: | |
| 7292 | case R_PPC64_ADDR16_HIGHEST: | |
| 7293 | case R_PPC64_ADDR16_HIGHESTA: | |
| 7294 | case R_PPC64_ADDR16_LO: | |
| 7295 | case R_PPC64_ADDR16_LO_DS: | |
| 7296 | case R_PPC64_ADDR24: | |
| 7297 | case R_PPC64_ADDR32: | |
| 7298 | case R_PPC64_UADDR16: | |
| 7299 | case R_PPC64_UADDR32: | |
| 7300 | case R_PPC64_UADDR64: | |
| 7301 | case R_PPC64_TOC: | |
| 7302 | break; | |
| 7303 | } | |
| 7304 | ||
| 7305 | if (local_syms != NULL) | |
| 7306 | { | |
| 7307 | unsigned long r_symndx; | |
| 8c1d1bb8 AM |
7308 | bfd *ibfd = sec->owner; |
| 7309 | ||
| 7310 | r_symndx = ELF64_R_SYM (r_info); | |
| 7311 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
| 7312 | return FALSE; | |
| 7313 | } | |
| 7314 | ||
| 7315 | if ((info->shared | |
| 1d483afe | 7316 | && (must_be_dyn_reloc (info, r_type) |
| 8c1d1bb8 | 7317 | || (h != NULL |
| 198f1157 | 7318 | && (!SYMBOLIC_BIND (info, h) |
| 8c1d1bb8 AM |
7319 | || h->root.type == bfd_link_hash_defweak |
| 7320 | || !h->def_regular)))) | |
| 7321 | || (ELIMINATE_COPY_RELOCS | |
| 7322 | && !info->shared | |
| 7323 | && h != NULL | |
| 7324 | && (h->root.type == bfd_link_hash_defweak | |
| 7325 | || !h->def_regular))) | |
| 7326 | ; | |
| 7327 | else | |
| 7328 | return TRUE; | |
| 7329 | ||
| 7330 | if (h != NULL) | |
| 6edfbbad | 7331 | { |
| 19e08130 AM |
7332 | struct elf_dyn_relocs *p; |
| 7333 | struct elf_dyn_relocs **pp; | |
| 7334 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
| 7335 | ||
| 7336 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
| 7337 | with local syms for a given section. Also, symbol flags are | |
| 7338 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
| 7339 | report a dynreloc miscount. */ | |
| 7340 | if (*pp == NULL && info->gc_sections) | |
| 7341 | return TRUE; | |
| 7342 | ||
| 7343 | while ((p = *pp) != NULL) | |
| 60124e18 | 7344 | { |
| 19e08130 AM |
7345 | if (p->sec == sec) |
| 7346 | { | |
| 7347 | if (!must_be_dyn_reloc (info, r_type)) | |
| 7348 | p->pc_count -= 1; | |
| 7349 | p->count -= 1; | |
| 7350 | if (p->count == 0) | |
| 7351 | *pp = p->next; | |
| 7352 | return TRUE; | |
| 7353 | } | |
| 7354 | pp = &p->next; | |
| 60124e18 | 7355 | } |
| 6edfbbad | 7356 | } |
| 19e08130 AM |
7357 | else |
| 7358 | { | |
| 7359 | struct ppc_dyn_relocs *p; | |
| 7360 | struct ppc_dyn_relocs **pp; | |
| 7361 | void *vpp; | |
| 7362 | bfd_boolean is_ifunc; | |
| 8c1d1bb8 | 7363 | |
| 19e08130 AM |
7364 | if (local_syms == NULL) |
| 7365 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 7366 | if (sym_sec == NULL) | |
| 7367 | sym_sec = sec; | |
| c57da1a7 | 7368 | |
| 19e08130 AM |
7369 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
| 7370 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 7371 | ||
| 7372 | if (*pp == NULL && info->gc_sections) | |
| 7373 | return TRUE; | |
| 7374 | ||
| 7375 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
| 7376 | while ((p = *pp) != NULL) | |
| 8c1d1bb8 | 7377 | { |
| 19e08130 AM |
7378 | if (p->sec == sec && p->ifunc == is_ifunc) |
| 7379 | { | |
| 7380 | p->count -= 1; | |
| 7381 | if (p->count == 0) | |
| 7382 | *pp = p->next; | |
| 7383 | return TRUE; | |
| 7384 | } | |
| 7385 | pp = &p->next; | |
| 8c1d1bb8 | 7386 | } |
| 8c1d1bb8 AM |
7387 | } |
| 7388 | ||
| 8de848d8 | 7389 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
| 25f53a85 | 7390 | sec->owner, sec); |
| 8c1d1bb8 AM |
7391 | bfd_set_error (bfd_error_bad_value); |
| 7392 | return FALSE; | |
| 7393 | } | |
| 7394 | ||
| 754021d0 AM |
7395 | /* Remove unused Official Procedure Descriptor entries. Currently we |
| 7396 | only remove those associated with functions in discarded link-once | |
| 7397 | sections, or weakly defined functions that have been overridden. It | |
| 7398 | would be possible to remove many more entries for statically linked | |
| 7399 | applications. */ | |
| 7400 | ||
| b34976b6 | 7401 | bfd_boolean |
| 33c0ec9d | 7402 | ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping) |
| 1e2f5b6e AM |
7403 | { |
| 7404 | bfd *ibfd; | |
| 754021d0 | 7405 | bfd_boolean some_edited = FALSE; |
| 3f764659 | 7406 | asection *need_pad = NULL; |
| 1e2f5b6e | 7407 | |
| 411e1bfb | 7408 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 1e2f5b6e AM |
7409 | { |
| 7410 | asection *sec; | |
| 7411 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 7412 | Elf_Internal_Shdr *symtab_hdr; | |
| 6cdc0ccc | 7413 | Elf_Internal_Sym *local_syms; |
| 1e2f5b6e | 7414 | bfd_vma offset; |
| 74f0fb50 | 7415 | struct _opd_sec_data *opd; |
| 3f764659 JJ |
7416 | bfd_boolean need_edit, add_aux_fields; |
| 7417 | bfd_size_type cnt_16b = 0; | |
| 1e2f5b6e | 7418 | |
| 854b41e7 AM |
7419 | if (!is_ppc64_elf (ibfd)) |
| 7420 | continue; | |
| 7421 | ||
| 1e2f5b6e | 7422 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
| 46de2a7c | 7423 | if (sec == NULL || sec->size == 0) |
| 1e2f5b6e AM |
7424 | continue; |
| 7425 | ||
| dbaa2011 | 7426 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
| 4b85d634 AM |
7427 | continue; |
| 7428 | ||
| 1e2f5b6e AM |
7429 | if (sec->output_section == bfd_abs_section_ptr) |
| 7430 | continue; | |
| 7431 | ||
| 7432 | /* Look through the section relocs. */ | |
| 7433 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
| 7434 | continue; | |
| 7435 | ||
| 6cdc0ccc | 7436 | local_syms = NULL; |
| 0ffa91dd | 7437 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 1e2f5b6e AM |
7438 | |
| 7439 | /* Read the relocations. */ | |
| 4ce794b7 | 7440 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 45d6a902 | 7441 | info->keep_memory); |
| 1e2f5b6e | 7442 | if (relstart == NULL) |
| b34976b6 | 7443 | return FALSE; |
| 1e2f5b6e AM |
7444 | |
| 7445 | /* First run through the relocs to check they are sane, and to | |
| 7446 | determine whether we need to edit this opd section. */ | |
| b34976b6 | 7447 | need_edit = FALSE; |
| 3f764659 | 7448 | need_pad = sec; |
| 1e2f5b6e AM |
7449 | offset = 0; |
| 7450 | relend = relstart + sec->reloc_count; | |
| 50bc7936 | 7451 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 7452 | { |
| 04c9666a | 7453 | enum elf_ppc64_reloc_type r_type; |
| 1e2f5b6e AM |
7454 | unsigned long r_symndx; |
| 7455 | asection *sym_sec; | |
| 7456 | struct elf_link_hash_entry *h; | |
| 7457 | Elf_Internal_Sym *sym; | |
| 7458 | ||
| 3f764659 | 7459 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
| 1e2f5b6e AM |
7460 | only interested in the reloc pointing to a function entry |
| 7461 | point. */ | |
| 50bc7936 AM |
7462 | if (rel->r_offset != offset |
| 7463 | || rel + 1 >= relend | |
| 7464 | || (rel + 1)->r_offset != offset + 8) | |
| 1e2f5b6e AM |
7465 | { |
| 7466 | /* If someone messes with .opd alignment then after a | |
| 7467 | "ld -r" we might have padding in the middle of .opd. | |
| 7468 | Also, there's nothing to prevent someone putting | |
| 7469 | something silly in .opd with the assembler. No .opd | |
| b34976b6 | 7470 | optimization for them! */ |
| 3f764659 | 7471 | broken_opd: |
| 1e2f5b6e | 7472 | (*_bfd_error_handler) |
| d003868e | 7473 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
| b34976b6 | 7474 | need_edit = FALSE; |
| 1e2f5b6e AM |
7475 | break; |
| 7476 | } | |
| 7477 | ||
| 50bc7936 AM |
7478 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
| 7479 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
| 7480 | { | |
| 7481 | (*_bfd_error_handler) | |
| d003868e AM |
7482 | (_("%B: unexpected reloc type %u in .opd section"), |
| 7483 | ibfd, r_type); | |
| 50bc7936 AM |
7484 | need_edit = FALSE; |
| 7485 | break; | |
| 7486 | } | |
| 7487 | ||
| 1e2f5b6e | 7488 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 411e1bfb AM |
7489 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 7490 | r_symndx, ibfd)) | |
| 50bc7936 | 7491 | goto error_ret; |
| 1e2f5b6e AM |
7492 | |
| 7493 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
| 7494 | { | |
| 411e1bfb AM |
7495 | const char *sym_name; |
| 7496 | if (h != NULL) | |
| 7497 | sym_name = h->root.root.string; | |
| 7498 | else | |
| 26c61ae5 L |
7499 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 7500 | sym_sec); | |
| 411e1bfb | 7501 | |
| 1e2f5b6e | 7502 | (*_bfd_error_handler) |
| d003868e AM |
7503 | (_("%B: undefined sym `%s' in .opd section"), |
| 7504 | ibfd, sym_name); | |
| b34976b6 | 7505 | need_edit = FALSE; |
| 1e2f5b6e AM |
7506 | break; |
| 7507 | } | |
| 7508 | ||
| 51020317 AM |
7509 | /* opd entries are always for functions defined in the |
| 7510 | current input bfd. If the symbol isn't defined in the | |
| 7511 | input bfd, then we won't be using the function in this | |
| 7512 | bfd; It must be defined in a linkonce section in another | |
| 7513 | bfd, or is weak. It's also possible that we are | |
| 7514 | discarding the function due to a linker script /DISCARD/, | |
| 7515 | which we test for via the output_section. */ | |
| 7516 | if (sym_sec->owner != ibfd | |
| 7517 | || sym_sec->output_section == bfd_abs_section_ptr) | |
| b34976b6 | 7518 | need_edit = TRUE; |
| 1e2f5b6e | 7519 | |
| 50bc7936 | 7520 | rel += 2; |
| 3f764659 JJ |
7521 | if (rel == relend |
| 7522 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
| 7523 | { | |
| 7524 | if (sec->size == offset + 24) | |
| 7525 | { | |
| 7526 | need_pad = NULL; | |
| 7527 | break; | |
| 7528 | } | |
| 7529 | if (rel == relend && sec->size == offset + 16) | |
| 7530 | { | |
| 7531 | cnt_16b++; | |
| 7532 | break; | |
| 7533 | } | |
| 7534 | goto broken_opd; | |
| 7535 | } | |
| 7536 | ||
| 7537 | if (rel->r_offset == offset + 24) | |
| 7538 | offset += 24; | |
| 7539 | else if (rel->r_offset != offset + 16) | |
| 7540 | goto broken_opd; | |
| 7541 | else if (rel + 1 < relend | |
| 7542 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
| 7543 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
| 7544 | { | |
| 7545 | offset += 16; | |
| 7546 | cnt_16b++; | |
| 7547 | } | |
| 7548 | else if (rel + 2 < relend | |
| 7549 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
| 7550 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
| 7551 | { | |
| 7552 | offset += 24; | |
| 7553 | rel += 1; | |
| 7554 | } | |
| 7555 | else | |
| 7556 | goto broken_opd; | |
| 1e2f5b6e AM |
7557 | } |
| 7558 | ||
| 3f764659 JJ |
7559 | add_aux_fields = non_overlapping && cnt_16b > 0; |
| 7560 | ||
| 7561 | if (need_edit || add_aux_fields) | |
| 1e2f5b6e AM |
7562 | { |
| 7563 | Elf_Internal_Rela *write_rel; | |
| d4730f92 | 7564 | Elf_Internal_Shdr *rel_hdr; |
| 1e2f5b6e | 7565 | bfd_byte *rptr, *wptr; |
| 983bddc8 | 7566 | bfd_byte *new_contents; |
| b34976b6 | 7567 | bfd_boolean skip; |
| 3f764659 | 7568 | long opd_ent_size; |
| 74f0fb50 AM |
7569 | bfd_size_type amt; |
| 7570 | ||
| 983bddc8 | 7571 | new_contents = NULL; |
| 74f0fb50 AM |
7572 | amt = sec->size * sizeof (long) / 8; |
| 7573 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
| 33c0ec9d | 7574 | opd->adjust = bfd_zalloc (sec->owner, amt); |
| 74f0fb50 AM |
7575 | if (opd->adjust == NULL) |
| 7576 | return FALSE; | |
| 7577 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e AM |
7578 | |
| 7579 | /* This seems a waste of time as input .opd sections are all | |
| 7580 | zeros as generated by gcc, but I suppose there's no reason | |
| 7581 | this will always be so. We might start putting something in | |
| 7582 | the third word of .opd entries. */ | |
| 7583 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
| 7584 | { | |
| eea6121a AM |
7585 | bfd_byte *loc; |
| 7586 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
| 6cdc0ccc | 7587 | { |
| eea6121a AM |
7588 | if (loc != NULL) |
| 7589 | free (loc); | |
| 50bc7936 | 7590 | error_ret: |
| 6cdc0ccc AM |
7591 | if (local_syms != NULL |
| 7592 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7593 | free (local_syms); | |
| 6cdc0ccc AM |
7594 | if (elf_section_data (sec)->relocs != relstart) |
| 7595 | free (relstart); | |
| b34976b6 | 7596 | return FALSE; |
| 6cdc0ccc | 7597 | } |
| 1e2f5b6e AM |
7598 | sec->contents = loc; |
| 7599 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7600 | } | |
| 7601 | ||
| 7602 | elf_section_data (sec)->relocs = relstart; | |
| 7603 | ||
| 3f764659 | 7604 | new_contents = sec->contents; |
| 3f764659 JJ |
7605 | if (add_aux_fields) |
| 7606 | { | |
| 7607 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
| 7608 | if (new_contents == NULL) | |
| 7609 | return FALSE; | |
| 7610 | need_pad = FALSE; | |
| 3f764659 | 7611 | } |
| b4f4e59f AM |
7612 | wptr = new_contents; |
| 7613 | rptr = sec->contents; | |
| 3f764659 | 7614 | |
| 1e2f5b6e | 7615 | write_rel = relstart; |
| b34976b6 | 7616 | skip = FALSE; |
| 1e2f5b6e | 7617 | offset = 0; |
| 3f764659 | 7618 | opd_ent_size = 0; |
| 1e2f5b6e AM |
7619 | for (rel = relstart; rel < relend; rel++) |
| 7620 | { | |
| 50bc7936 AM |
7621 | unsigned long r_symndx; |
| 7622 | asection *sym_sec; | |
| 7623 | struct elf_link_hash_entry *h; | |
| 7624 | Elf_Internal_Sym *sym; | |
| 7625 | ||
| 7626 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7627 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| d37c89e5 | 7628 | r_symndx, ibfd)) |
| 50bc7936 AM |
7629 | goto error_ret; |
| 7630 | ||
| 1e2f5b6e AM |
7631 | if (rel->r_offset == offset) |
| 7632 | { | |
| 50bc7936 | 7633 | struct ppc_link_hash_entry *fdh = NULL; |
| 3f764659 JJ |
7634 | |
| 7635 | /* See if the .opd entry is full 24 byte or | |
| 7636 | 16 byte (with fd_aux entry overlapped with next | |
| 7637 | fd_func). */ | |
| 7638 | opd_ent_size = 24; | |
| 7639 | if ((rel + 2 == relend && sec->size == offset + 16) | |
| 7640 | || (rel + 3 < relend | |
| 7641 | && rel[2].r_offset == offset + 16 | |
| 7642 | && rel[3].r_offset == offset + 24 | |
| 7643 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
| 7644 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
| 7645 | opd_ent_size = 16; | |
| 7646 | ||
| 4025353c AM |
7647 | if (h != NULL |
| 7648 | && h->root.root.string[0] == '.') | |
| c4f68ce3 | 7649 | { |
| 4dfe6ac6 NC |
7650 | struct ppc_link_hash_table *htab; |
| 7651 | ||
| 7652 | htab = ppc_hash_table (info); | |
| 7653 | if (htab != NULL) | |
| 7654 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, | |
| 7655 | htab); | |
| c4f68ce3 AM |
7656 | if (fdh != NULL |
| 7657 | && fdh->elf.root.type != bfd_link_hash_defined | |
| 7658 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
| 7659 | fdh = NULL; | |
| 7660 | } | |
| 1e2f5b6e | 7661 | |
| 51020317 AM |
7662 | skip = (sym_sec->owner != ibfd |
| 7663 | || sym_sec->output_section == bfd_abs_section_ptr); | |
| a4aa0fb7 AM |
7664 | if (skip) |
| 7665 | { | |
| 4025353c | 7666 | if (fdh != NULL && sym_sec->owner == ibfd) |
| a4aa0fb7 AM |
7667 | { |
| 7668 | /* Arrange for the function descriptor sym | |
| 7669 | to be dropped. */ | |
| d6fe2dc1 AM |
7670 | fdh->elf.root.u.def.value = 0; |
| 7671 | fdh->elf.root.u.def.section = sym_sec; | |
| a4aa0fb7 | 7672 | } |
| 74f0fb50 | 7673 | opd->adjust[rel->r_offset / 8] = -1; |
| a4aa0fb7 AM |
7674 | } |
| 7675 | else | |
| 1e2f5b6e AM |
7676 | { |
| 7677 | /* We'll be keeping this opd entry. */ | |
| 7678 | ||
| 4025353c | 7679 | if (fdh != NULL) |
| 1e2f5b6e | 7680 | { |
| 754021d0 AM |
7681 | /* Redefine the function descriptor symbol to |
| 7682 | this location in the opd section. It is | |
| 7683 | necessary to update the value here rather | |
| 7684 | than using an array of adjustments as we do | |
| 7685 | for local symbols, because various places | |
| 7686 | in the generic ELF code use the value | |
| 7687 | stored in u.def.value. */ | |
| 3f764659 | 7688 | fdh->elf.root.u.def.value = wptr - new_contents; |
| 754021d0 | 7689 | fdh->adjust_done = 1; |
| 1e2f5b6e | 7690 | } |
| 754021d0 AM |
7691 | |
| 7692 | /* Local syms are a bit tricky. We could | |
| 7693 | tweak them as they can be cached, but | |
| 7694 | we'd need to look through the local syms | |
| 7695 | for the function descriptor sym which we | |
| 7696 | don't have at the moment. So keep an | |
| 7697 | array of adjustments. */ | |
| 74f0fb50 | 7698 | opd->adjust[rel->r_offset / 8] |
| 3f764659 | 7699 | = (wptr - new_contents) - (rptr - sec->contents); |
| 1e2f5b6e AM |
7700 | |
| 7701 | if (wptr != rptr) | |
| 3f764659 JJ |
7702 | memcpy (wptr, rptr, opd_ent_size); |
| 7703 | wptr += opd_ent_size; | |
| 7704 | if (add_aux_fields && opd_ent_size == 16) | |
| 7705 | { | |
| 7706 | memset (wptr, '\0', 8); | |
| 7707 | wptr += 8; | |
| 7708 | } | |
| 1e2f5b6e | 7709 | } |
| 3f764659 JJ |
7710 | rptr += opd_ent_size; |
| 7711 | offset += opd_ent_size; | |
| 1e2f5b6e AM |
7712 | } |
| 7713 | ||
| 50bc7936 AM |
7714 | if (skip) |
| 7715 | { | |
| 60124e18 AM |
7716 | if (!NO_OPD_RELOCS |
| 7717 | && !info->relocatable | |
| 18d944df | 7718 | && !dec_dynrel_count (rel->r_info, sec, info, |
| 19e08130 | 7719 | NULL, h, sym)) |
| 8c1d1bb8 | 7720 | goto error_ret; |
| 50bc7936 AM |
7721 | } |
| 7722 | else | |
| 1e2f5b6e | 7723 | { |
| 50bc7936 AM |
7724 | /* We need to adjust any reloc offsets to point to the |
| 7725 | new opd entries. While we're at it, we may as well | |
| 7726 | remove redundant relocs. */ | |
| 74f0fb50 | 7727 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
| 1e2f5b6e AM |
7728 | if (write_rel != rel) |
| 7729 | memcpy (write_rel, rel, sizeof (*rel)); | |
| 7730 | ++write_rel; | |
| 7731 | } | |
| 7732 | } | |
| 7733 | ||
| 3f764659 | 7734 | sec->size = wptr - new_contents; |
| 1e2f5b6e | 7735 | sec->reloc_count = write_rel - relstart; |
| 3f764659 JJ |
7736 | if (add_aux_fields) |
| 7737 | { | |
| 7738 | free (sec->contents); | |
| 7739 | sec->contents = new_contents; | |
| 7740 | } | |
| 7741 | ||
| 05bf9422 | 7742 | /* Fudge the header size too, as this is used later in |
| cdcf6e38 | 7743 | elf_bfd_final_link if we are emitting relocs. */ |
| d4730f92 BS |
7744 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
| 7745 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
| 754021d0 | 7746 | some_edited = TRUE; |
| 1e2f5b6e | 7747 | } |
| 6cdc0ccc | 7748 | else if (elf_section_data (sec)->relocs != relstart) |
| 1e2f5b6e | 7749 | free (relstart); |
| 6cdc0ccc | 7750 | |
| 411e1bfb AM |
7751 | if (local_syms != NULL |
| 7752 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7753 | { | |
| 7754 | if (!info->keep_memory) | |
| 7755 | free (local_syms); | |
| 7756 | else | |
| 7757 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 7758 | } | |
| 7759 | } | |
| 7760 | ||
| 754021d0 AM |
7761 | if (some_edited) |
| 7762 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
| 7763 | ||
| 3f764659 JJ |
7764 | /* If we are doing a final link and the last .opd entry is just 16 byte |
| 7765 | long, add a 8 byte padding after it. */ | |
| 7766 | if (need_pad != NULL && !info->relocatable) | |
| 7767 | { | |
| 7768 | bfd_byte *p; | |
| 7769 | ||
| 7770 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
| 7771 | { | |
| 7772 | BFD_ASSERT (need_pad->size > 0); | |
| 7773 | ||
| 7774 | p = bfd_malloc (need_pad->size + 8); | |
| 7775 | if (p == NULL) | |
| 7776 | return FALSE; | |
| 699733f6 | 7777 | |
| 3f764659 JJ |
7778 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
| 7779 | p, 0, need_pad->size)) | |
| 7780 | return FALSE; | |
| 7781 | ||
| 7782 | need_pad->contents = p; | |
| 7783 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7784 | } | |
| 7785 | else | |
| 7786 | { | |
| 7787 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
| 7788 | if (p == NULL) | |
| 7789 | return FALSE; | |
| 7790 | ||
| 7791 | need_pad->contents = p; | |
| 7792 | } | |
| 7793 | ||
| 7794 | memset (need_pad->contents + need_pad->size, 0, 8); | |
| 7795 | need_pad->size += 8; | |
| 7796 | } | |
| 7797 | ||
| 411e1bfb AM |
7798 | return TRUE; |
| 7799 | } | |
| 7800 | ||
| e1918d23 | 7801 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
| 411e1bfb | 7802 | |
| e1918d23 | 7803 | asection * |
| 33c0ec9d AM |
7804 | ppc64_elf_tls_setup (struct bfd_link_info *info, |
| 7805 | int no_tls_get_addr_opt, | |
| 7806 | int *no_multi_toc) | |
| 411e1bfb | 7807 | { |
| 411e1bfb AM |
7808 | struct ppc_link_hash_table *htab; |
| 7809 | ||
| 411e1bfb | 7810 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
7811 | if (htab == NULL) |
| 7812 | return NULL; | |
| 7813 | ||
| ee67d69a AM |
7814 | if (abiversion (info->output_bfd) == 1) |
| 7815 | htab->opd_abi = 1; | |
| 7816 | ||
| 33c0ec9d AM |
7817 | if (*no_multi_toc) |
| 7818 | htab->do_multi_toc = 0; | |
| 7819 | else if (!htab->do_multi_toc) | |
| 7820 | *no_multi_toc = 1; | |
| 7821 | ||
| 3a71aa26 AM |
7822 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
| 7823 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 7824 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
7825 | /* Move dynamic linking info to the function descriptor sym. */ |
| 7826 | if (htab->tls_get_addr != NULL) | |
| 7827 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
| 3a71aa26 AM |
7828 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
| 7829 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
| 7830 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
7831 | if (!no_tls_get_addr_opt) |
| 7832 | { | |
| 7833 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
| 7834 | ||
| 7835 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
| 7836 | FALSE, FALSE, TRUE); | |
| 7837 | if (opt != NULL) | |
| 7838 | func_desc_adjust (opt, info); | |
| 7839 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
| 7840 | FALSE, FALSE, TRUE); | |
| 7841 | if (opt_fd != NULL | |
| 7842 | && (opt_fd->root.type == bfd_link_hash_defined | |
| 7843 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
| 7844 | { | |
| 7845 | /* If glibc supports an optimized __tls_get_addr call stub, | |
| 7846 | signalled by the presence of __tls_get_addr_opt, and we'll | |
| 7847 | be calling __tls_get_addr via a plt call stub, then | |
| 7848 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
| 7849 | tga_fd = &htab->tls_get_addr_fd->elf; | |
| 7850 | if (htab->elf.dynamic_sections_created | |
| 7851 | && tga_fd != NULL | |
| 7852 | && (tga_fd->type == STT_FUNC | |
| 7853 | || tga_fd->needs_plt) | |
| 7854 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
| 7855 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
| 7856 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
| 7857 | { | |
| 7858 | struct plt_entry *ent; | |
| 7859 | ||
| 7860 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
| 7861 | if (ent->plt.refcount > 0) | |
| 7862 | break; | |
| 7863 | if (ent != NULL) | |
| 7864 | { | |
| 7865 | tga_fd->root.type = bfd_link_hash_indirect; | |
| 7866 | tga_fd->root.u.i.link = &opt_fd->root; | |
| 7867 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
| 7868 | if (opt_fd->dynindx != -1) | |
| 7869 | { | |
| 7870 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
| 7871 | opt_fd->dynindx = -1; | |
| 7872 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 7873 | opt_fd->dynstr_index); | |
| 7874 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
| 854b41e7 | 7875 | return NULL; |
| a7f2871e AM |
7876 | } |
| 7877 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
| 7878 | tga = &htab->tls_get_addr->elf; | |
| 7879 | if (opt != NULL && tga != NULL) | |
| 7880 | { | |
| 7881 | tga->root.type = bfd_link_hash_indirect; | |
| 7882 | tga->root.u.i.link = &opt->root; | |
| 7883 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
| 7884 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
| 7885 | tga->forced_local); | |
| 7886 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
| 7887 | } | |
| 7888 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
| 7889 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
| 7890 | if (htab->tls_get_addr != NULL) | |
| 7891 | { | |
| 7892 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
| 7893 | htab->tls_get_addr->is_func = 1; | |
| 7894 | } | |
| 7895 | } | |
| 7896 | } | |
| 7897 | } | |
| 7898 | else | |
| 7899 | no_tls_get_addr_opt = TRUE; | |
| 7900 | } | |
| 7901 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
| 33c0ec9d | 7902 | return _bfd_elf_tls_setup (info->output_bfd, info); |
| 3a71aa26 | 7903 | } |
| 8387904d | 7904 | |
| 3a71aa26 AM |
7905 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
| 7906 | HASH1 or HASH2. */ | |
| 8387904d | 7907 | |
| 3a71aa26 AM |
7908 | static bfd_boolean |
| 7909 | branch_reloc_hash_match (const bfd *ibfd, | |
| 7910 | const Elf_Internal_Rela *rel, | |
| 7911 | const struct ppc_link_hash_entry *hash1, | |
| 7912 | const struct ppc_link_hash_entry *hash2) | |
| 7913 | { | |
| 7914 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 7915 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
| 7916 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7917 | ||
| e054468f | 7918 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
| 8387904d | 7919 | { |
| 3a71aa26 AM |
7920 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
| 7921 | struct elf_link_hash_entry *h; | |
| 8387904d | 7922 | |
| 3a71aa26 | 7923 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| b31867b6 | 7924 | h = elf_follow_link (h); |
| 3a71aa26 AM |
7925 | if (h == &hash1->elf || h == &hash2->elf) |
| 7926 | return TRUE; | |
| a48ebf4d | 7927 | } |
| 3a71aa26 | 7928 | return FALSE; |
| 951fd09b | 7929 | } |
| 411e1bfb | 7930 | |
| 951fd09b AM |
7931 | /* Run through all the TLS relocs looking for optimization |
| 7932 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
| 7933 | a preliminary section layout so that we know the TLS segment | |
| 7934 | offsets. We can't optimize earlier because some optimizations need | |
| 7935 | to know the tp offset, and we need to optimize before allocating | |
| 7936 | dynamic relocations. */ | |
| 7937 | ||
| 7938 | bfd_boolean | |
| 33c0ec9d | 7939 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
| 951fd09b AM |
7940 | { |
| 7941 | bfd *ibfd; | |
| 7942 | asection *sec; | |
| 7943 | struct ppc_link_hash_table *htab; | |
| 663a1470 | 7944 | unsigned char *toc_ref; |
| 102890f0 | 7945 | int pass; |
| 951fd09b | 7946 | |
| 1d483afe | 7947 | if (info->relocatable || !info->executable) |
| 411e1bfb AM |
7948 | return TRUE; |
| 7949 | ||
| 951fd09b | 7950 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
7951 | if (htab == NULL) |
| 7952 | return FALSE; | |
| 7953 | ||
| 663a1470 AM |
7954 | /* Make two passes over the relocs. On the first pass, mark toc |
| 7955 | entries involved with tls relocs, and check that tls relocs | |
| 7956 | involved in setting up a tls_get_addr call are indeed followed by | |
| 7957 | such a call. If they are not, we can't do any tls optimization. | |
| 7958 | On the second pass twiddle tls_mask flags to notify | |
| 7959 | relocate_section that optimization can be done, and adjust got | |
| 7960 | and plt refcounts. */ | |
| 7961 | toc_ref = NULL; | |
| 7962 | for (pass = 0; pass < 2; ++pass) | |
| 7963 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 7964 | { | |
| 7965 | Elf_Internal_Sym *locsyms = NULL; | |
| 7966 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
| 7967 | ||
| 102890f0 AM |
7968 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 7969 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
| 7970 | { | |
| 7971 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 663a1470 | 7972 | bfd_boolean found_tls_get_addr_arg = 0; |
| 411e1bfb | 7973 | |
| 102890f0 AM |
7974 | /* Read the relocations. */ |
| 7975 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 7976 | info->keep_memory); | |
| 7977 | if (relstart == NULL) | |
| 7978 | return FALSE; | |
| 411e1bfb | 7979 | |
| 102890f0 AM |
7980 | relend = relstart + sec->reloc_count; |
| 7981 | for (rel = relstart; rel < relend; rel++) | |
| 7982 | { | |
| 7983 | enum elf_ppc64_reloc_type r_type; | |
| 7984 | unsigned long r_symndx; | |
| 7985 | struct elf_link_hash_entry *h; | |
| 7986 | Elf_Internal_Sym *sym; | |
| 7987 | asection *sym_sec; | |
| f961d9dd AM |
7988 | unsigned char *tls_mask; |
| 7989 | unsigned char tls_set, tls_clear, tls_type = 0; | |
| 102890f0 AM |
7990 | bfd_vma value; |
| 7991 | bfd_boolean ok_tprel, is_local; | |
| 7992 | long toc_ref_index = 0; | |
| 7993 | int expecting_tls_get_addr = 0; | |
| 663a1470 | 7994 | bfd_boolean ret = FALSE; |
| 411e1bfb | 7995 | |
| 102890f0 AM |
7996 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 7997 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
| 7998 | r_symndx, ibfd)) | |
| 7999 | { | |
| 8000 | err_free_rel: | |
| 8001 | if (elf_section_data (sec)->relocs != relstart) | |
| 8002 | free (relstart); | |
| 8003 | if (toc_ref != NULL) | |
| 8004 | free (toc_ref); | |
| 8005 | if (locsyms != NULL | |
| 0ffa91dd | 8006 | && (elf_symtab_hdr (ibfd).contents |
| 102890f0 AM |
8007 | != (unsigned char *) locsyms)) |
| 8008 | free (locsyms); | |
| 663a1470 | 8009 | return ret; |
| 102890f0 | 8010 | } |
| 411e1bfb | 8011 | |
| 102890f0 AM |
8012 | if (h != NULL) |
| 8013 | { | |
| 766bc656 AM |
8014 | if (h->root.type == bfd_link_hash_defined |
| 8015 | || h->root.type == bfd_link_hash_defweak) | |
| 8016 | value = h->root.u.def.value; | |
| 8017 | else if (h->root.type == bfd_link_hash_undefweak) | |
| 8018 | value = 0; | |
| 8019 | else | |
| 663a1470 AM |
8020 | { |
| 8021 | found_tls_get_addr_arg = 0; | |
| 8022 | continue; | |
| 8023 | } | |
| 102890f0 AM |
8024 | } |
| 8025 | else | |
| 8026 | /* Symbols referenced by TLS relocs must be of type | |
| 8027 | STT_TLS. So no need for .opd local sym adjust. */ | |
| 8028 | value = sym->st_value; | |
| 8029 | ||
| 8030 | ok_tprel = FALSE; | |
| 8031 | is_local = FALSE; | |
| 8032 | if (h == NULL | |
| 8033 | || !h->def_dynamic) | |
| 8034 | { | |
| 8035 | is_local = TRUE; | |
| 766bc656 AM |
8036 | if (h != NULL |
| 8037 | && h->root.type == bfd_link_hash_undefweak) | |
| 8038 | ok_tprel = TRUE; | |
| 8039 | else | |
| 8040 | { | |
| 8041 | value += sym_sec->output_offset; | |
| 8042 | value += sym_sec->output_section->vma; | |
| 8043 | value -= htab->elf.tls_sec->vma; | |
| 8044 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
| 8045 | < (bfd_vma) 1 << 32); | |
| 8046 | } | |
| 102890f0 | 8047 | } |
| 951fd09b | 8048 | |
| 102890f0 | 8049 | r_type = ELF64_R_TYPE (rel->r_info); |
| 663a1470 AM |
8050 | /* If this section has old-style __tls_get_addr calls |
| 8051 | without marker relocs, then check that each | |
| 8052 | __tls_get_addr call reloc is preceded by a reloc | |
| 8053 | that conceivably belongs to the __tls_get_addr arg | |
| 8054 | setup insn. If we don't find matching arg setup | |
| 8055 | relocs, don't do any tls optimization. */ | |
| 8056 | if (pass == 0 | |
| 8057 | && sec->has_tls_get_addr_call | |
| 8058 | && h != NULL | |
| 8059 | && (h == &htab->tls_get_addr->elf | |
| 8060 | || h == &htab->tls_get_addr_fd->elf) | |
| 8061 | && !found_tls_get_addr_arg | |
| 8062 | && is_branch_reloc (r_type)) | |
| 8063 | { | |
| 25f53a85 | 8064 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
| 663a1470 AM |
8065 | "TLS optimization disabled\n"), |
| 8066 | ibfd, sec, rel->r_offset); | |
| 8067 | ret = TRUE; | |
| 8068 | goto err_free_rel; | |
| 8069 | } | |
| 8070 | ||
| 8071 | found_tls_get_addr_arg = 0; | |
| 102890f0 AM |
8072 | switch (r_type) |
| 8073 | { | |
| 8074 | case R_PPC64_GOT_TLSLD16: | |
| 8075 | case R_PPC64_GOT_TLSLD16_LO: | |
| 8076 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8077 | found_tls_get_addr_arg = 1; |
| 102890f0 AM |
8078 | /* Fall thru */ |
| 8079 | ||
| 8080 | case R_PPC64_GOT_TLSLD16_HI: | |
| 8081 | case R_PPC64_GOT_TLSLD16_HA: | |
| 8082 | /* These relocs should never be against a symbol | |
| 8083 | defined in a shared lib. Leave them alone if | |
| 8084 | that turns out to be the case. */ | |
| 8085 | if (!is_local) | |
| 8086 | continue; | |
| 411e1bfb | 8087 | |
| 102890f0 | 8088 | /* LD -> LE */ |
| 411e1bfb | 8089 | tls_set = 0; |
| 102890f0 AM |
8090 | tls_clear = TLS_LD; |
| 8091 | tls_type = TLS_TLS | TLS_LD; | |
| 8092 | break; | |
| 411e1bfb | 8093 | |
| 102890f0 AM |
8094 | case R_PPC64_GOT_TLSGD16: |
| 8095 | case R_PPC64_GOT_TLSGD16_LO: | |
| 8096 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8097 | found_tls_get_addr_arg = 1; |
| 102890f0 AM |
8098 | /* Fall thru */ |
| 8099 | ||
| 8100 | case R_PPC64_GOT_TLSGD16_HI: | |
| 8101 | case R_PPC64_GOT_TLSGD16_HA: | |
| 8102 | if (ok_tprel) | |
| 8103 | /* GD -> LE */ | |
| 411e1bfb | 8104 | tls_set = 0; |
| 102890f0 AM |
8105 | else |
| 8106 | /* GD -> IE */ | |
| 8107 | tls_set = TLS_TLS | TLS_TPRELGD; | |
| 8108 | tls_clear = TLS_GD; | |
| 8109 | tls_type = TLS_TLS | TLS_GD; | |
| 8110 | break; | |
| 8111 | ||
| 8112 | case R_PPC64_GOT_TPREL16_DS: | |
| 8113 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 8114 | case R_PPC64_GOT_TPREL16_HI: | |
| 8115 | case R_PPC64_GOT_TPREL16_HA: | |
| 8116 | if (ok_tprel) | |
| 8117 | { | |
| 8118 | /* IE -> LE */ | |
| 8119 | tls_set = 0; | |
| 8120 | tls_clear = TLS_TPREL; | |
| 8121 | tls_type = TLS_TLS | TLS_TPREL; | |
| 8122 | break; | |
| 8123 | } | |
| 411e1bfb AM |
8124 | continue; |
| 8125 | ||
| 727fc41e AM |
8126 | case R_PPC64_TLSGD: |
| 8127 | case R_PPC64_TLSLD: | |
| 663a1470 AM |
8128 | found_tls_get_addr_arg = 1; |
| 8129 | /* Fall thru */ | |
| 8130 | ||
| 8131 | case R_PPC64_TLS: | |
| 8132 | case R_PPC64_TOC16: | |
| 8133 | case R_PPC64_TOC16_LO: | |
| 102890f0 AM |
8134 | if (sym_sec == NULL || sym_sec != toc) |
| 8135 | continue; | |
| 8136 | ||
| 8137 | /* Mark this toc entry as referenced by a TLS | |
| 8138 | code sequence. We can do that now in the | |
| 8139 | case of R_PPC64_TLS, and after checking for | |
| 8140 | tls_get_addr for the TOC16 relocs. */ | |
| 8141 | if (toc_ref == NULL) | |
| 663a1470 AM |
8142 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
| 8143 | if (toc_ref == NULL) | |
| 8144 | goto err_free_rel; | |
| 8145 | ||
| 102890f0 AM |
8146 | if (h != NULL) |
| 8147 | value = h->root.u.def.value; | |
| 8148 | else | |
| 8149 | value = sym->st_value; | |
| 8150 | value += rel->r_addend; | |
| 8151 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
| 663a1470 | 8152 | toc_ref_index = (value + toc->output_offset) / 8; |
| 727fc41e AM |
8153 | if (r_type == R_PPC64_TLS |
| 8154 | || r_type == R_PPC64_TLSGD | |
| 8155 | || r_type == R_PPC64_TLSLD) | |
| 102890f0 AM |
8156 | { |
| 8157 | toc_ref[toc_ref_index] = 1; | |
| 8158 | continue; | |
| 8159 | } | |
| 8160 | ||
| 8161 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
| 8162 | continue; | |
| 8163 | ||
| 8164 | tls_set = 0; | |
| 8165 | tls_clear = 0; | |
| 8166 | expecting_tls_get_addr = 2; | |
| 8167 | break; | |
| 8168 | ||
| 8169 | case R_PPC64_TPREL64: | |
| 8170 | if (pass == 0 | |
| 8171 | || sec != toc | |
| 8172 | || toc_ref == NULL | |
| 663a1470 | 8173 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8174 | continue; |
| 8175 | if (ok_tprel) | |
| 8176 | { | |
| 8177 | /* IE -> LE */ | |
| 8178 | tls_set = TLS_EXPLICIT; | |
| 8179 | tls_clear = TLS_TPREL; | |
| 8180 | break; | |
| 8181 | } | |
| 8182 | continue; | |
| 8183 | ||
| 8184 | case R_PPC64_DTPMOD64: | |
| 8185 | if (pass == 0 | |
| 8186 | || sec != toc | |
| 8187 | || toc_ref == NULL | |
| 663a1470 | 8188 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8189 | continue; |
| 8190 | if (rel + 1 < relend | |
| 8191 | && (rel[1].r_info | |
| 8192 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
| 8193 | && rel[1].r_offset == rel->r_offset + 8) | |
| 8194 | { | |
| 8195 | if (ok_tprel) | |
| 8196 | /* GD -> LE */ | |
| 8197 | tls_set = TLS_EXPLICIT | TLS_GD; | |
| 8198 | else | |
| 8199 | /* GD -> IE */ | |
| 8200 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
| 8201 | tls_clear = TLS_GD; | |
| 8202 | } | |
| 8203 | else | |
| 8204 | { | |
| 8205 | if (!is_local) | |
| 8206 | continue; | |
| 8207 | ||
| 8208 | /* LD -> LE */ | |
| 8209 | tls_set = TLS_EXPLICIT; | |
| 8210 | tls_clear = TLS_LD; | |
| 8211 | } | |
| 8212 | break; | |
| 8213 | ||
| 8214 | default: | |
| 8215 | continue; | |
| 8216 | } | |
| 8217 | ||
| 8218 | if (pass == 0) | |
| 8219 | { | |
| 727fc41e AM |
8220 | if (!expecting_tls_get_addr |
| 8221 | || !sec->has_tls_get_addr_call) | |
| 102890f0 AM |
8222 | continue; |
| 8223 | ||
| 3a71aa26 AM |
8224 | if (rel + 1 < relend |
| 8225 | && branch_reloc_hash_match (ibfd, rel + 1, | |
| 8226 | htab->tls_get_addr, | |
| 8227 | htab->tls_get_addr_fd)) | |
| 102890f0 | 8228 | { |
| 3a71aa26 | 8229 | if (expecting_tls_get_addr == 2) |
| 102890f0 | 8230 | { |
| 3a71aa26 | 8231 | /* Check for toc tls entries. */ |
| f961d9dd | 8232 | unsigned char *toc_tls; |
| 3a71aa26 AM |
8233 | int retval; |
| 8234 | ||
| 8235 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
| 8236 | &locsyms, | |
| 8237 | rel, ibfd); | |
| 8238 | if (retval == 0) | |
| 8239 | goto err_free_rel; | |
| 663a1470 AM |
8240 | if (toc_tls != NULL) |
| 8241 | { | |
| 8242 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
| 8243 | found_tls_get_addr_arg = 1; | |
| 8244 | if (retval > 1) | |
| 8245 | toc_ref[toc_ref_index] = 1; | |
| 8246 | } | |
| 102890f0 | 8247 | } |
| 3a71aa26 | 8248 | continue; |
| 102890f0 AM |
8249 | } |
| 8250 | ||
| 8251 | if (expecting_tls_get_addr != 1) | |
| 8252 | continue; | |
| 8253 | ||
| 8254 | /* Uh oh, we didn't find the expected call. We | |
| 8255 | could just mark this symbol to exclude it | |
| 8256 | from tls optimization but it's safer to skip | |
| 663a1470 | 8257 | the entire optimization. */ |
| 25f53a85 | 8258 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
| 663a1470 AM |
8259 | "TLS optimization disabled\n"), |
| 8260 | ibfd, sec, rel->r_offset); | |
| 8261 | ret = TRUE; | |
| 8262 | goto err_free_rel; | |
| 102890f0 AM |
8263 | } |
| 8264 | ||
| 85f7a9cb | 8265 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
| 102890f0 AM |
8266 | { |
| 8267 | struct plt_entry *ent; | |
| 8268 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
| 8269 | ent != NULL; | |
| 8270 | ent = ent->next) | |
| 8271 | if (ent->addend == 0) | |
| 411e1bfb | 8272 | { |
| 102890f0 | 8273 | if (ent->plt.refcount > 0) |
| 30038c59 | 8274 | { |
| 102890f0 AM |
8275 | ent->plt.refcount -= 1; |
| 8276 | expecting_tls_get_addr = 0; | |
| 30038c59 | 8277 | } |
| 102890f0 | 8278 | break; |
| 411e1bfb | 8279 | } |
| 102890f0 | 8280 | } |
| 411e1bfb | 8281 | |
| 85f7a9cb | 8282 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
| 102890f0 AM |
8283 | { |
| 8284 | struct plt_entry *ent; | |
| 8285 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
| 8286 | ent != NULL; | |
| 8287 | ent = ent->next) | |
| 8288 | if (ent->addend == 0) | |
| 411e1bfb | 8289 | { |
| 102890f0 AM |
8290 | if (ent->plt.refcount > 0) |
| 8291 | ent->plt.refcount -= 1; | |
| 8292 | break; | |
| 411e1bfb | 8293 | } |
| 102890f0 | 8294 | } |
| 411e1bfb | 8295 | |
| 102890f0 | 8296 | if (tls_clear == 0) |
| 30038c59 AM |
8297 | continue; |
| 8298 | ||
| 102890f0 AM |
8299 | if ((tls_set & TLS_EXPLICIT) == 0) |
| 8300 | { | |
| 8301 | struct got_entry *ent; | |
| 411e1bfb | 8302 | |
| 102890f0 AM |
8303 | /* Adjust got entry for this reloc. */ |
| 8304 | if (h != NULL) | |
| 8305 | ent = h->got.glist; | |
| 8306 | else | |
| 8307 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
| 411e1bfb | 8308 | |
| 102890f0 AM |
8309 | for (; ent != NULL; ent = ent->next) |
| 8310 | if (ent->addend == rel->r_addend | |
| 8311 | && ent->owner == ibfd | |
| 8312 | && ent->tls_type == tls_type) | |
| 8313 | break; | |
| 8314 | if (ent == NULL) | |
| 8315 | abort (); | |
| 411e1bfb | 8316 | |
| 102890f0 AM |
8317 | if (tls_set == 0) |
| 8318 | { | |
| 8319 | /* We managed to get rid of a got entry. */ | |
| 8320 | if (ent->got.refcount > 0) | |
| 8321 | ent->got.refcount -= 1; | |
| 8322 | } | |
| 8323 | } | |
| 8324 | else | |
| 8325 | { | |
| 8326 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
| 8327 | we'll lose one or two dyn relocs. */ | |
| 8328 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 19e08130 | 8329 | NULL, h, sym)) |
| 102890f0 | 8330 | return FALSE; |
| 411e1bfb | 8331 | |
| 102890f0 AM |
8332 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
| 8333 | { | |
| 8334 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
| 19e08130 | 8335 | NULL, h, sym)) |
| 102890f0 AM |
8336 | return FALSE; |
| 8337 | } | |
| 8338 | } | |
| 411e1bfb | 8339 | |
| 102890f0 AM |
8340 | *tls_mask |= tls_set; |
| 8341 | *tls_mask &= ~tls_clear; | |
| 8342 | } | |
| 8c1d1bb8 | 8343 | |
| 102890f0 AM |
8344 | if (elf_section_data (sec)->relocs != relstart) |
| 8345 | free (relstart); | |
| 8346 | } | |
| 411e1bfb | 8347 | |
| 663a1470 AM |
8348 | if (locsyms != NULL |
| 8349 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
| 8350 | { | |
| 8351 | if (!info->keep_memory) | |
| 8352 | free (locsyms); | |
| 8353 | else | |
| 8354 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
| 8355 | } | |
| 8356 | } | |
| 411e1bfb | 8357 | |
| 663a1470 AM |
8358 | if (toc_ref != NULL) |
| 8359 | free (toc_ref); | |
| b34976b6 | 8360 | return TRUE; |
| 1e2f5b6e | 8361 | } |
| b34976b6 | 8362 | |
| c5614fa4 AM |
8363 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
| 8364 | the values of any global symbols in a toc section that has been | |
| 8365 | edited. Globals in toc sections should be a rarity, so this function | |
| 8366 | sets a flag if any are found in toc sections other than the one just | |
| 8367 | edited, so that futher hash table traversals can be avoided. */ | |
| 8368 | ||
| 8369 | struct adjust_toc_info | |
| 8370 | { | |
| 8371 | asection *toc; | |
| 8372 | unsigned long *skip; | |
| 8373 | bfd_boolean global_toc_syms; | |
| 8374 | }; | |
| 8375 | ||
| ba761f19 AM |
8376 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
| 8377 | ||
| c5614fa4 AM |
8378 | static bfd_boolean |
| 8379 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
| 8380 | { | |
| 8381 | struct ppc_link_hash_entry *eh; | |
| 8382 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
| 854b41e7 | 8383 | unsigned long i; |
| c5614fa4 | 8384 | |
| c5614fa4 AM |
8385 | if (h->root.type != bfd_link_hash_defined |
| 8386 | && h->root.type != bfd_link_hash_defweak) | |
| 8387 | return TRUE; | |
| 8388 | ||
| 8389 | eh = (struct ppc_link_hash_entry *) h; | |
| 8390 | if (eh->adjust_done) | |
| 8391 | return TRUE; | |
| 8392 | ||
| 8393 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
| 8394 | { | |
| 854b41e7 AM |
8395 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
| 8396 | i = toc_inf->toc->rawsize >> 3; | |
| c5614fa4 | 8397 | else |
| 854b41e7 AM |
8398 | i = eh->elf.root.u.def.value >> 3; |
| 8399 | ||
| ba761f19 | 8400 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| c5614fa4 AM |
8401 | { |
| 8402 | (*_bfd_error_handler) | |
| 854b41e7 AM |
8403 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
| 8404 | do | |
| 8405 | ++i; | |
| ba761f19 | 8406 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
| 854b41e7 | 8407 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
| c5614fa4 | 8408 | } |
| 854b41e7 AM |
8409 | |
| 8410 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
| c5614fa4 AM |
8411 | eh->adjust_done = 1; |
| 8412 | } | |
| 8413 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
| 8414 | toc_inf->global_toc_syms = TRUE; | |
| 8415 | ||
| 8416 | return TRUE; | |
| 8417 | } | |
| 8418 | ||
| 560c8763 AM |
8419 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
| 8420 | ||
| 8421 | static bfd_boolean | |
| 8422 | ok_lo_toc_insn (unsigned int insn) | |
| 8423 | { | |
| 8424 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
| 8425 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
| 8426 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
| 8427 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
| 8428 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
| 8429 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
| 8430 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
| 8431 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
| 8432 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
| 8433 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
| 8434 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
| 8435 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
| 8436 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
| 8437 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
| 8438 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
| 8439 | && (insn & 3) != 1) | |
| 8440 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
| 8441 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
| 8442 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
| 8443 | } | |
| 8444 | ||
| c5614fa4 AM |
8445 | /* Examine all relocs referencing .toc sections in order to remove |
| 8446 | unused .toc entries. */ | |
| 8447 | ||
| 8448 | bfd_boolean | |
| 33c0ec9d | 8449 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
| c5614fa4 AM |
8450 | { |
| 8451 | bfd *ibfd; | |
| 8452 | struct adjust_toc_info toc_inf; | |
| 67f0cbdb | 8453 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| c5614fa4 | 8454 | |
| 67f0cbdb | 8455 | htab->do_toc_opt = 1; |
| c5614fa4 AM |
8456 | toc_inf.global_toc_syms = TRUE; |
| 8457 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 8458 | { | |
| 8459 | asection *toc, *sec; | |
| 8460 | Elf_Internal_Shdr *symtab_hdr; | |
| 8461 | Elf_Internal_Sym *local_syms; | |
| 425b145b | 8462 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
| c5614fa4 AM |
8463 | unsigned long *skip, *drop; |
| 8464 | unsigned char *used; | |
| 8465 | unsigned char *keep, last, some_unused; | |
| 8466 | ||
| 854b41e7 AM |
8467 | if (!is_ppc64_elf (ibfd)) |
| 8468 | continue; | |
| 8469 | ||
| c5614fa4 AM |
8470 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
| 8471 | if (toc == NULL | |
| 92b7a70f | 8472 | || toc->size == 0 |
| dbaa2011 AM |
8473 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
| 8474 | || discarded_section (toc)) | |
| c5614fa4 AM |
8475 | continue; |
| 8476 | ||
| 425b145b | 8477 | toc_relocs = NULL; |
| c5614fa4 | 8478 | local_syms = NULL; |
| 0ffa91dd | 8479 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| c5614fa4 AM |
8480 | |
| 8481 | /* Look at sections dropped from the final link. */ | |
| 8482 | skip = NULL; | |
| 8483 | relstart = NULL; | |
| 8484 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 8485 | { | |
| 8486 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8487 | || !discarded_section (sec) |
| c5614fa4 AM |
8488 | || get_opd_info (sec) |
| 8489 | || (sec->flags & SEC_ALLOC) == 0 | |
| 8490 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 8491 | continue; | |
| 8492 | ||
| 8493 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
| 8494 | if (relstart == NULL) | |
| 8495 | goto error_ret; | |
| 8496 | ||
| 8497 | /* Run through the relocs to see which toc entries might be | |
| 8498 | unused. */ | |
| 8499 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8500 | { | |
| 8501 | enum elf_ppc64_reloc_type r_type; | |
| 8502 | unsigned long r_symndx; | |
| 8503 | asection *sym_sec; | |
| 8504 | struct elf_link_hash_entry *h; | |
| 8505 | Elf_Internal_Sym *sym; | |
| 8506 | bfd_vma val; | |
| 8507 | ||
| 8508 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8509 | switch (r_type) | |
| 8510 | { | |
| 8511 | default: | |
| 8512 | continue; | |
| 8513 | ||
| 8514 | case R_PPC64_TOC16: | |
| 8515 | case R_PPC64_TOC16_LO: | |
| 8516 | case R_PPC64_TOC16_HI: | |
| 8517 | case R_PPC64_TOC16_HA: | |
| 8518 | case R_PPC64_TOC16_DS: | |
| 8519 | case R_PPC64_TOC16_LO_DS: | |
| 8520 | break; | |
| 8521 | } | |
| 8522 | ||
| 8523 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8524 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8525 | r_symndx, ibfd)) | |
| 8526 | goto error_ret; | |
| 8527 | ||
| 8528 | if (sym_sec != toc) | |
| 8529 | continue; | |
| 8530 | ||
| 8531 | if (h != NULL) | |
| 8532 | val = h->root.u.def.value; | |
| 8533 | else | |
| 8534 | val = sym->st_value; | |
| 8535 | val += rel->r_addend; | |
| 8536 | ||
| 8537 | if (val >= toc->size) | |
| 8538 | continue; | |
| 8539 | ||
| 8540 | /* Anything in the toc ought to be aligned to 8 bytes. | |
| 8541 | If not, don't mark as unused. */ | |
| 8542 | if (val & 7) | |
| 8543 | continue; | |
| 8544 | ||
| 8545 | if (skip == NULL) | |
| 8546 | { | |
| 854b41e7 | 8547 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
| c5614fa4 AM |
8548 | if (skip == NULL) |
| 8549 | goto error_ret; | |
| 8550 | } | |
| 8551 | ||
| ba761f19 | 8552 | skip[val >> 3] = ref_from_discarded; |
| c5614fa4 AM |
8553 | } |
| 8554 | ||
| 8555 | if (elf_section_data (sec)->relocs != relstart) | |
| 8556 | free (relstart); | |
| 8557 | } | |
| 8558 | ||
| ba761f19 AM |
8559 | /* For largetoc loads of address constants, we can convert |
| 8560 | . addis rx,2,addr@got@ha | |
| 8561 | . ld ry,addr@got@l(rx) | |
| 8562 | to | |
| 8563 | . addis rx,2,addr@toc@ha | |
| 8564 | . addi ry,rx,addr@toc@l | |
| 8565 | when addr is within 2G of the toc pointer. This then means | |
| 8566 | that the word storing "addr" in the toc is no longer needed. */ | |
| 68ffbac6 | 8567 | |
| ba761f19 AM |
8568 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
| 8569 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
| 8570 | && toc->reloc_count != 0) | |
| 8571 | { | |
| 8572 | /* Read toc relocs. */ | |
| 425b145b AM |
8573 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
| 8574 | info->keep_memory); | |
| 8575 | if (toc_relocs == NULL) | |
| ba761f19 AM |
8576 | goto error_ret; |
| 8577 | ||
| 425b145b | 8578 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
| ba761f19 AM |
8579 | { |
| 8580 | enum elf_ppc64_reloc_type r_type; | |
| 8581 | unsigned long r_symndx; | |
| 8582 | asection *sym_sec; | |
| 8583 | struct elf_link_hash_entry *h; | |
| 8584 | Elf_Internal_Sym *sym; | |
| 8585 | bfd_vma val, addr; | |
| 8586 | ||
| 8587 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8588 | if (r_type != R_PPC64_ADDR64) | |
| 8589 | continue; | |
| 8590 | ||
| 8591 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8592 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8593 | r_symndx, ibfd)) | |
| 8594 | goto error_ret; | |
| 8595 | ||
| 425b145b | 8596 | if (sym_sec == NULL |
| dbaa2011 | 8597 | || discarded_section (sym_sec)) |
| 425b145b AM |
8598 | continue; |
| 8599 | ||
| 726d3ab0 | 8600 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
| ba761f19 AM |
8601 | continue; |
| 8602 | ||
| 8603 | if (h != NULL) | |
| bddc25c9 AM |
8604 | { |
| 8605 | if (h->type == STT_GNU_IFUNC) | |
| 8606 | continue; | |
| 8607 | val = h->root.u.def.value; | |
| 8608 | } | |
| ba761f19 | 8609 | else |
| bddc25c9 AM |
8610 | { |
| 8611 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 8612 | continue; | |
| 8613 | val = sym->st_value; | |
| 8614 | } | |
| ba761f19 AM |
8615 | val += rel->r_addend; |
| 8616 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
| 8617 | ||
| 8618 | /* We don't yet know the exact toc pointer value, but we | |
| 8619 | know it will be somewhere in the toc section. Don't | |
| 8620 | optimize if the difference from any possible toc | |
| 8621 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
| 8622 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
| 8623 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 8624 | continue; | |
| 8625 | ||
| 8626 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
| 8627 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 8628 | continue; | |
| 8629 | ||
| 8630 | if (skip == NULL) | |
| 8631 | { | |
| 8632 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
| 8633 | if (skip == NULL) | |
| 8634 | goto error_ret; | |
| 8635 | } | |
| 8636 | ||
| 8637 | skip[rel->r_offset >> 3] | |
| 425b145b | 8638 | |= can_optimize | ((rel - toc_relocs) << 2); |
| ba761f19 | 8639 | } |
| ba761f19 AM |
8640 | } |
| 8641 | ||
| c5614fa4 AM |
8642 | if (skip == NULL) |
| 8643 | continue; | |
| 8644 | ||
| 8645 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
| 8646 | if (used == NULL) | |
| 8647 | { | |
| 8648 | error_ret: | |
| 8649 | if (local_syms != NULL | |
| 8650 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 8651 | free (local_syms); | |
| 8652 | if (sec != NULL | |
| 8653 | && relstart != NULL | |
| 8654 | && elf_section_data (sec)->relocs != relstart) | |
| 8655 | free (relstart); | |
| 425b145b AM |
8656 | if (toc_relocs != NULL |
| 8657 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 8658 | free (toc_relocs); | |
| c5614fa4 AM |
8659 | if (skip != NULL) |
| 8660 | free (skip); | |
| 8661 | return FALSE; | |
| 8662 | } | |
| 8663 | ||
| 30038c59 AM |
8664 | /* Now check all kept sections that might reference the toc. |
| 8665 | Check the toc itself last. */ | |
| 8666 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
| 8667 | : ibfd->sections); | |
| c5614fa4 | 8668 | sec != NULL; |
| c5614fa4 | 8669 | sec = (sec == toc ? NULL |
| c5614fa4 | 8670 | : sec->next == NULL ? toc |
| 30038c59 | 8671 | : sec->next == toc && toc->next ? toc->next |
| c5614fa4 AM |
8672 | : sec->next)) |
| 8673 | { | |
| 8674 | int repeat; | |
| 8675 | ||
| 8676 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8677 | || discarded_section (sec) |
| c5614fa4 AM |
8678 | || get_opd_info (sec) |
| 8679 | || (sec->flags & SEC_ALLOC) == 0 | |
| 8680 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 8681 | continue; | |
| 8682 | ||
| 854b41e7 AM |
8683 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 8684 | info->keep_memory); | |
| c5614fa4 AM |
8685 | if (relstart == NULL) |
| 8686 | goto error_ret; | |
| 8687 | ||
| 8688 | /* Mark toc entries referenced as used. */ | |
| c5614fa4 | 8689 | do |
| d4f1ee75 AM |
8690 | { |
| 8691 | repeat = 0; | |
| 8692 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8693 | { | |
| 8694 | enum elf_ppc64_reloc_type r_type; | |
| 8695 | unsigned long r_symndx; | |
| 8696 | asection *sym_sec; | |
| 8697 | struct elf_link_hash_entry *h; | |
| 8698 | Elf_Internal_Sym *sym; | |
| 8699 | bfd_vma val; | |
| 8700 | enum {no_check, check_lo, check_ha} insn_check; | |
| 98528052 | 8701 | |
| d4f1ee75 AM |
8702 | r_type = ELF64_R_TYPE (rel->r_info); |
| 8703 | switch (r_type) | |
| 8704 | { | |
| 8705 | default: | |
| 8706 | insn_check = no_check; | |
| 8707 | break; | |
| 98528052 | 8708 | |
| d4f1ee75 AM |
8709 | case R_PPC64_GOT_TLSLD16_HA: |
| 8710 | case R_PPC64_GOT_TLSGD16_HA: | |
| 8711 | case R_PPC64_GOT_TPREL16_HA: | |
| 8712 | case R_PPC64_GOT_DTPREL16_HA: | |
| 8713 | case R_PPC64_GOT16_HA: | |
| 8714 | case R_PPC64_TOC16_HA: | |
| 8715 | insn_check = check_ha; | |
| 8716 | break; | |
| 98528052 | 8717 | |
| d4f1ee75 AM |
8718 | case R_PPC64_GOT_TLSLD16_LO: |
| 8719 | case R_PPC64_GOT_TLSGD16_LO: | |
| 8720 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 8721 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 8722 | case R_PPC64_GOT16_LO: | |
| 8723 | case R_PPC64_GOT16_LO_DS: | |
| 8724 | case R_PPC64_TOC16_LO: | |
| 8725 | case R_PPC64_TOC16_LO_DS: | |
| 8726 | insn_check = check_lo; | |
| 8727 | break; | |
| 8728 | } | |
| 560c8763 | 8729 | |
| d4f1ee75 AM |
8730 | if (insn_check != no_check) |
| 8731 | { | |
| 8732 | bfd_vma off = rel->r_offset & ~3; | |
| 8733 | unsigned char buf[4]; | |
| 8734 | unsigned int insn; | |
| c5614fa4 | 8735 | |
| d4f1ee75 AM |
8736 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
| 8737 | { | |
| 8738 | free (used); | |
| 8739 | goto error_ret; | |
| 8740 | } | |
| 8741 | insn = bfd_get_32 (ibfd, buf); | |
| 8742 | if (insn_check == check_lo | |
| 8743 | ? !ok_lo_toc_insn (insn) | |
| 8744 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
| 8745 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
| 8746 | { | |
| 8747 | char str[12]; | |
| 8748 | ||
| 8749 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
| 8750 | sprintf (str, "%#08x", insn); | |
| 8751 | info->callbacks->einfo | |
| 8752 | (_("%P: %H: toc optimization is not supported for" | |
| 8753 | " %s instruction.\n"), | |
| 8754 | ibfd, sec, rel->r_offset & ~3, str); | |
| 8755 | } | |
| 8756 | } | |
| c5614fa4 | 8757 | |
| d4f1ee75 AM |
8758 | switch (r_type) |
| 8759 | { | |
| 8760 | case R_PPC64_TOC16: | |
| 8761 | case R_PPC64_TOC16_LO: | |
| 8762 | case R_PPC64_TOC16_HI: | |
| 8763 | case R_PPC64_TOC16_HA: | |
| 8764 | case R_PPC64_TOC16_DS: | |
| 8765 | case R_PPC64_TOC16_LO_DS: | |
| 8766 | /* In case we're taking addresses of toc entries. */ | |
| 8767 | case R_PPC64_ADDR64: | |
| 8768 | break; | |
| c5614fa4 | 8769 | |
| d4f1ee75 AM |
8770 | default: |
| 8771 | continue; | |
| 8772 | } | |
| c5614fa4 | 8773 | |
| d4f1ee75 AM |
8774 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8775 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8776 | r_symndx, ibfd)) | |
| 8777 | { | |
| 8778 | free (used); | |
| 8779 | goto error_ret; | |
| 8780 | } | |
| c5614fa4 | 8781 | |
| d4f1ee75 AM |
8782 | if (sym_sec != toc) |
| 8783 | continue; | |
| c5614fa4 | 8784 | |
| d4f1ee75 AM |
8785 | if (h != NULL) |
| 8786 | val = h->root.u.def.value; | |
| 8787 | else | |
| 8788 | val = sym->st_value; | |
| 8789 | val += rel->r_addend; | |
| ba761f19 | 8790 | |
| d4f1ee75 AM |
8791 | if (val >= toc->size) |
| 8792 | continue; | |
| ba761f19 | 8793 | |
| d4f1ee75 AM |
8794 | if ((skip[val >> 3] & can_optimize) != 0) |
| 8795 | { | |
| 8796 | bfd_vma off; | |
| 8797 | unsigned char opc; | |
| 8798 | ||
| 8799 | switch (r_type) | |
| 8800 | { | |
| 8801 | case R_PPC64_TOC16_HA: | |
| ba761f19 | 8802 | break; |
| ba761f19 | 8803 | |
| d4f1ee75 AM |
8804 | case R_PPC64_TOC16_LO_DS: |
| 8805 | off = rel->r_offset; | |
| 8806 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
| 8807 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
| 8808 | off, 1)) | |
| 8809 | { | |
| 8810 | free (used); | |
| 8811 | goto error_ret; | |
| 8812 | } | |
| 8813 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
| 8814 | break; | |
| 8815 | /* Fall thru */ | |
| ba761f19 | 8816 | |
| d4f1ee75 AM |
8817 | default: |
| 8818 | /* Wrong sort of reloc, or not a ld. We may | |
| 8819 | as well clear ref_from_discarded too. */ | |
| 8820 | skip[val >> 3] = 0; | |
| 8821 | } | |
| 8822 | } | |
| 8823 | ||
| 8824 | if (sec != toc) | |
| 8825 | used[val >> 3] = 1; | |
| 8826 | /* For the toc section, we only mark as used if this | |
| 8827 | entry itself isn't unused. */ | |
| 8828 | else if ((used[rel->r_offset >> 3] | |
| 8829 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
| 8830 | && !used[val >> 3]) | |
| 8831 | { | |
| 8832 | /* Do all the relocs again, to catch reference | |
| 8833 | chains. */ | |
| 8834 | repeat = 1; | |
| 8835 | used[val >> 3] = 1; | |
| 8836 | } | |
| 8837 | } | |
| 8838 | } | |
| c5614fa4 | 8839 | while (repeat); |
| 854b41e7 AM |
8840 | |
| 8841 | if (elf_section_data (sec)->relocs != relstart) | |
| 8842 | free (relstart); | |
| c5614fa4 AM |
8843 | } |
| 8844 | ||
| 8845 | /* Merge the used and skip arrays. Assume that TOC | |
| 8846 | doublewords not appearing as either used or unused belong | |
| 8847 | to to an entry more than one doubleword in size. */ | |
| 8848 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
| 8849 | drop < skip + (toc->size + 7) / 8; | |
| 8850 | ++drop, ++keep) | |
| 8851 | { | |
| 8852 | if (*keep) | |
| 8853 | { | |
| ba761f19 AM |
8854 | *drop &= ~ref_from_discarded; |
| 8855 | if ((*drop & can_optimize) != 0) | |
| 8856 | some_unused = 1; | |
| c5614fa4 AM |
8857 | last = 0; |
| 8858 | } | |
| b140b010 | 8859 | else if ((*drop & ref_from_discarded) != 0) |
| c5614fa4 AM |
8860 | { |
| 8861 | some_unused = 1; | |
| ba761f19 | 8862 | last = ref_from_discarded; |
| c5614fa4 AM |
8863 | } |
| 8864 | else | |
| 8865 | *drop = last; | |
| 8866 | } | |
| 8867 | ||
| 8868 | free (used); | |
| 8869 | ||
| 8870 | if (some_unused) | |
| 8871 | { | |
| 8872 | bfd_byte *contents, *src; | |
| 8873 | unsigned long off; | |
| d62b3684 | 8874 | Elf_Internal_Sym *sym; |
| ba761f19 | 8875 | bfd_boolean local_toc_syms = FALSE; |
| c5614fa4 AM |
8876 | |
| 8877 | /* Shuffle the toc contents, and at the same time convert the | |
| 8878 | skip array from booleans into offsets. */ | |
| 8879 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
| 8880 | goto error_ret; | |
| 8881 | ||
| 8882 | elf_section_data (toc)->this_hdr.contents = contents; | |
| 8883 | ||
| 8884 | for (src = contents, off = 0, drop = skip; | |
| 8885 | src < contents + toc->size; | |
| 8886 | src += 8, ++drop) | |
| 8887 | { | |
| ba761f19 AM |
8888 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
| 8889 | off += 8; | |
| c5614fa4 AM |
8890 | else if (off != 0) |
| 8891 | { | |
| 8892 | *drop = off; | |
| 8893 | memcpy (src - off, src, 8); | |
| 8894 | } | |
| 8895 | } | |
| 854b41e7 | 8896 | *drop = off; |
| c5614fa4 AM |
8897 | toc->rawsize = toc->size; |
| 8898 | toc->size = src - contents - off; | |
| 8899 | ||
| ba761f19 AM |
8900 | /* Adjust addends for relocs against the toc section sym, |
| 8901 | and optimize any accesses we can. */ | |
| c5614fa4 AM |
8902 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 8903 | { | |
| 8904 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8905 | || discarded_section (sec)) |
| c5614fa4 AM |
8906 | continue; |
| 8907 | ||
| 8908 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 854b41e7 | 8909 | info->keep_memory); |
| c5614fa4 AM |
8910 | if (relstart == NULL) |
| 8911 | goto error_ret; | |
| 8912 | ||
| 8913 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8914 | { | |
| 8915 | enum elf_ppc64_reloc_type r_type; | |
| 8916 | unsigned long r_symndx; | |
| 8917 | asection *sym_sec; | |
| 8918 | struct elf_link_hash_entry *h; | |
| 854b41e7 | 8919 | bfd_vma val; |
| c5614fa4 AM |
8920 | |
| 8921 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8922 | switch (r_type) | |
| 8923 | { | |
| 8924 | default: | |
| 8925 | continue; | |
| 8926 | ||
| 8927 | case R_PPC64_TOC16: | |
| 8928 | case R_PPC64_TOC16_LO: | |
| 8929 | case R_PPC64_TOC16_HI: | |
| 8930 | case R_PPC64_TOC16_HA: | |
| 8931 | case R_PPC64_TOC16_DS: | |
| 8932 | case R_PPC64_TOC16_LO_DS: | |
| 8933 | case R_PPC64_ADDR64: | |
| 8934 | break; | |
| 8935 | } | |
| 8936 | ||
| 8937 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8938 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8939 | r_symndx, ibfd)) | |
| 8940 | goto error_ret; | |
| 8941 | ||
| ba761f19 | 8942 | if (sym_sec != toc) |
| c5614fa4 AM |
8943 | continue; |
| 8944 | ||
| ba761f19 AM |
8945 | if (h != NULL) |
| 8946 | val = h->root.u.def.value; | |
| 8947 | else | |
| 8948 | { | |
| 8949 | val = sym->st_value; | |
| 8950 | if (val != 0) | |
| 8951 | local_toc_syms = TRUE; | |
| 8952 | } | |
| 8953 | ||
| 8954 | val += rel->r_addend; | |
| 854b41e7 AM |
8955 | |
| 8956 | if (val > toc->rawsize) | |
| 8957 | val = toc->rawsize; | |
| ba761f19 AM |
8958 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
| 8959 | continue; | |
| 8960 | else if ((skip[val >> 3] & can_optimize) != 0) | |
| 8961 | { | |
| 8962 | Elf_Internal_Rela *tocrel | |
| 425b145b | 8963 | = toc_relocs + (skip[val >> 3] >> 2); |
| ba761f19 AM |
8964 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
| 8965 | ||
| 8966 | switch (r_type) | |
| 8967 | { | |
| 8968 | case R_PPC64_TOC16_HA: | |
| 8969 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
| 8970 | break; | |
| 8971 | ||
| 8972 | case R_PPC64_TOC16_LO_DS: | |
| 8973 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
| 8974 | break; | |
| 8975 | ||
| 8976 | default: | |
| 28942f62 AM |
8977 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 8978 | ppc_howto_init (); | |
| b140b010 | 8979 | info->callbacks->einfo |
| bc30df16 | 8980 | (_("%P: %H: %s references " |
| b140b010 AM |
8981 | "optimized away TOC entry\n"), |
| 8982 | ibfd, sec, rel->r_offset, | |
| 8983 | ppc64_elf_howto_table[r_type]->name); | |
| 8984 | bfd_set_error (bfd_error_bad_value); | |
| 8985 | goto error_ret; | |
| ba761f19 AM |
8986 | } |
| 8987 | rel->r_addend = tocrel->r_addend; | |
| 8988 | elf_section_data (sec)->relocs = relstart; | |
| 8989 | continue; | |
| 8990 | } | |
| 8991 | ||
| 8992 | if (h != NULL || sym->st_value != 0) | |
| 8993 | continue; | |
| 854b41e7 AM |
8994 | |
| 8995 | rel->r_addend -= skip[val >> 3]; | |
| 8996 | elf_section_data (sec)->relocs = relstart; | |
| c5614fa4 | 8997 | } |
| 854b41e7 AM |
8998 | |
| 8999 | if (elf_section_data (sec)->relocs != relstart) | |
| 9000 | free (relstart); | |
| c5614fa4 AM |
9001 | } |
| 9002 | ||
| 9003 | /* We shouldn't have local or global symbols defined in the TOC, | |
| 9004 | but handle them anyway. */ | |
| df22d223 AM |
9005 | if (local_syms != NULL) |
| 9006 | for (sym = local_syms; | |
| 9007 | sym < local_syms + symtab_hdr->sh_info; | |
| 9008 | ++sym) | |
| 9009 | if (sym->st_value != 0 | |
| 9010 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
| 9011 | { | |
| 9012 | unsigned long i; | |
| 854b41e7 | 9013 | |
| df22d223 AM |
9014 | if (sym->st_value > toc->rawsize) |
| 9015 | i = toc->rawsize >> 3; | |
| 9016 | else | |
| 9017 | i = sym->st_value >> 3; | |
| 854b41e7 | 9018 | |
| df22d223 AM |
9019 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| 9020 | { | |
| 9021 | if (local_toc_syms) | |
| 9022 | (*_bfd_error_handler) | |
| 9023 | (_("%s defined on removed toc entry"), | |
| 9024 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
| 9025 | do | |
| 9026 | ++i; | |
| 9027 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
| 9028 | sym->st_value = (bfd_vma) i << 3; | |
| 9029 | } | |
| d62b3684 | 9030 | |
| df22d223 AM |
9031 | sym->st_value -= skip[i]; |
| 9032 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9033 | } | |
| c5614fa4 | 9034 | |
| 854b41e7 | 9035 | /* Adjust any global syms defined in this toc input section. */ |
| c5614fa4 AM |
9036 | if (toc_inf.global_toc_syms) |
| 9037 | { | |
| 9038 | toc_inf.toc = toc; | |
| 9039 | toc_inf.skip = skip; | |
| 9040 | toc_inf.global_toc_syms = FALSE; | |
| 9041 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
| 9042 | &toc_inf); | |
| 9043 | } | |
| 854b41e7 AM |
9044 | |
| 9045 | if (toc->reloc_count != 0) | |
| 9046 | { | |
| d4730f92 | 9047 | Elf_Internal_Shdr *rel_hdr; |
| 854b41e7 AM |
9048 | Elf_Internal_Rela *wrel; |
| 9049 | bfd_size_type sz; | |
| 9050 | ||
| 854b41e7 | 9051 | /* Remove unused toc relocs, and adjust those we keep. */ |
| 28be611c AM |
9052 | if (toc_relocs == NULL) |
| 9053 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
| 9054 | info->keep_memory); | |
| 9055 | if (toc_relocs == NULL) | |
| 9056 | goto error_ret; | |
| 9057 | ||
| 425b145b AM |
9058 | wrel = toc_relocs; |
| 9059 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
| ba761f19 AM |
9060 | if ((skip[rel->r_offset >> 3] |
| 9061 | & (ref_from_discarded | can_optimize)) == 0) | |
| 854b41e7 AM |
9062 | { |
| 9063 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
| 9064 | wrel->r_info = rel->r_info; | |
| 9065 | wrel->r_addend = rel->r_addend; | |
| 9066 | ++wrel; | |
| 9067 | } | |
| 9068 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
| 9069 | &local_syms, NULL, NULL)) | |
| 9070 | goto error_ret; | |
| 9071 | ||
| 425b145b AM |
9072 | elf_section_data (toc)->relocs = toc_relocs; |
| 9073 | toc->reloc_count = wrel - toc_relocs; | |
| d4730f92 BS |
9074 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
| 9075 | sz = rel_hdr->sh_entsize; | |
| 9076 | rel_hdr->sh_size = toc->reloc_count * sz; | |
| 854b41e7 | 9077 | } |
| c5614fa4 | 9078 | } |
| 28be611c AM |
9079 | else if (toc_relocs != NULL |
| 9080 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 425b145b | 9081 | free (toc_relocs); |
| c5614fa4 AM |
9082 | |
| 9083 | if (local_syms != NULL | |
| 9084 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 9085 | { | |
| 9086 | if (!info->keep_memory) | |
| 9087 | free (local_syms); | |
| 9088 | else | |
| 9089 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9090 | } | |
| 9091 | free (skip); | |
| 9092 | } | |
| 9093 | ||
| 9094 | return TRUE; | |
| 9095 | } | |
| 9096 | ||
| 1bbe0902 AM |
9097 | /* Return true iff input section I references the TOC using |
| 9098 | instructions limited to +/-32k offsets. */ | |
| 9099 | ||
| 9100 | bfd_boolean | |
| 9101 | ppc64_elf_has_small_toc_reloc (asection *i) | |
| 9102 | { | |
| 9103 | return (is_ppc64_elf (i->owner) | |
| 9104 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
| 9105 | } | |
| 9106 | ||
| 927be08e AM |
9107 | /* Allocate space for one GOT entry. */ |
| 9108 | ||
| 9109 | static void | |
| 9110 | allocate_got (struct elf_link_hash_entry *h, | |
| 9111 | struct bfd_link_info *info, | |
| 9112 | struct got_entry *gent) | |
| 9113 | { | |
| 9114 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9115 | bfd_boolean dyn; | |
| 9116 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| 9117 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
| 9118 | ? 16 : 8); | |
| 9119 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
| 9120 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
| 9121 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
| 9122 | ||
| 9123 | gent->got.offset = got->size; | |
| 9124 | got->size += entsize; | |
| 9125 | ||
| 9126 | dyn = htab->elf.dynamic_sections_created; | |
| 19e08130 | 9127 | if (h->type == STT_GNU_IFUNC) |
| 927be08e | 9128 | { |
| 19e08130 AM |
9129 | htab->reliplt->size += rentsize; |
| 9130 | htab->got_reli_size += rentsize; | |
| 927be08e | 9131 | } |
| 19e08130 AM |
9132 | else if ((info->shared |
| 9133 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
| 9134 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 9135 | || h->root.type != bfd_link_hash_undefweak)) | |
| 927be08e | 9136 | { |
| 19e08130 | 9137 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
| 927be08e | 9138 | relgot->size += rentsize; |
| 927be08e AM |
9139 | } |
| 9140 | } | |
| 9141 | ||
| 7865406b AM |
9142 | /* This function merges got entries in the same toc group. */ |
| 9143 | ||
| 9144 | static void | |
| 9145 | merge_got_entries (struct got_entry **pent) | |
| 9146 | { | |
| 9147 | struct got_entry *ent, *ent2; | |
| 9148 | ||
| 9149 | for (ent = *pent; ent != NULL; ent = ent->next) | |
| 9150 | if (!ent->is_indirect) | |
| 9151 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
| 9152 | if (!ent2->is_indirect | |
| 9153 | && ent2->addend == ent->addend | |
| 9154 | && ent2->tls_type == ent->tls_type | |
| 9155 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
| 9156 | { | |
| 9157 | ent2->is_indirect = TRUE; | |
| 9158 | ent2->got.ent = ent; | |
| 9159 | } | |
| 9160 | } | |
| 9161 | ||
| 65f38f15 AM |
9162 | /* Allocate space in .plt, .got and associated reloc sections for |
| 9163 | dynamic relocs. */ | |
| 5bd4f169 | 9164 | |
| b34976b6 | 9165 | static bfd_boolean |
| 4ce794b7 | 9166 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 9167 | { |
| 65f38f15 AM |
9168 | struct bfd_link_info *info; |
| 9169 | struct ppc_link_hash_table *htab; | |
| 5bd4f169 | 9170 | asection *s; |
| 65f38f15 | 9171 | struct ppc_link_hash_entry *eh; |
| 6061a67d | 9172 | struct elf_dyn_relocs *p; |
| 0b8bcf0d | 9173 | struct got_entry **pgent, *gent; |
| 5bd4f169 | 9174 | |
| e92d460e | 9175 | if (h->root.type == bfd_link_hash_indirect) |
| b34976b6 | 9176 | return TRUE; |
| 5bd4f169 | 9177 | |
| 65f38f15 AM |
9178 | info = (struct bfd_link_info *) inf; |
| 9179 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9180 | if (htab == NULL) |
| 9181 | return FALSE; | |
| 5bd4f169 | 9182 | |
| e054468f AM |
9183 | if ((htab->elf.dynamic_sections_created |
| 9184 | && h->dynindx != -1 | |
| 9185 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
| 9186 | || h->type == STT_GNU_IFUNC) | |
| 5bd4f169 | 9187 | { |
| 411e1bfb AM |
9188 | struct plt_entry *pent; |
| 9189 | bfd_boolean doneone = FALSE; | |
| 9190 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 9191 | if (pent->plt.refcount > 0) | |
| 9192 | { | |
| 25f23106 AM |
9193 | if (!htab->elf.dynamic_sections_created |
| 9194 | || h->dynindx == -1) | |
| e054468f AM |
9195 | { |
| 9196 | s = htab->iplt; | |
| 9197 | pent->plt.offset = s->size; | |
| 9198 | s->size += PLT_ENTRY_SIZE; | |
| 9199 | s = htab->reliplt; | |
| 9200 | } | |
| 9201 | else | |
| 9202 | { | |
| 9203 | /* If this is the first .plt entry, make room for the special | |
| 9204 | first entry. */ | |
| 9205 | s = htab->plt; | |
| 9206 | if (s->size == 0) | |
| 9207 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
| 9208 | ||
| 9209 | pent->plt.offset = s->size; | |
| 9210 | ||
| 9211 | /* Make room for this entry. */ | |
| 9212 | s->size += PLT_ENTRY_SIZE; | |
| 9213 | ||
| 9214 | /* Make room for the .glink code. */ | |
| 9215 | s = htab->glink; | |
| 9216 | if (s->size == 0) | |
| 9217 | s->size += GLINK_CALL_STUB_SIZE; | |
| 9218 | /* We need bigger stubs past index 32767. */ | |
| 9219 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
| 9220 | s->size += 4; | |
| 9221 | s->size += 2*4; | |
| 9222 | ||
| 9223 | /* We also need to make an entry in the .rela.plt section. */ | |
| 9224 | s = htab->relplt; | |
| 9225 | } | |
| eea6121a | 9226 | s->size += sizeof (Elf64_External_Rela); |
| 411e1bfb AM |
9227 | doneone = TRUE; |
| 9228 | } | |
| 9229 | else | |
| 9230 | pent->plt.offset = (bfd_vma) -1; | |
| 9231 | if (!doneone) | |
| 65f38f15 | 9232 | { |
| 411e1bfb | 9233 | h->plt.plist = NULL; |
| f5385ebf | 9234 | h->needs_plt = 0; |
| 65f38f15 AM |
9235 | } |
| 9236 | } | |
| 9237 | else | |
| 9238 | { | |
| 411e1bfb | 9239 | h->plt.plist = NULL; |
| f5385ebf | 9240 | h->needs_plt = 0; |
| 65f38f15 AM |
9241 | } |
| 9242 | ||
| 951fd09b AM |
9243 | eh = (struct ppc_link_hash_entry *) h; |
| 9244 | /* Run through the TLS GD got entries first if we're changing them | |
| 9245 | to TPREL. */ | |
| e7b938ca | 9246 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
| 951fd09b AM |
9247 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 9248 | if (gent->got.refcount > 0 | |
| 9249 | && (gent->tls_type & TLS_GD) != 0) | |
| 9250 | { | |
| 9251 | /* This was a GD entry that has been converted to TPREL. If | |
| 9252 | there happens to be a TPREL entry we can use that one. */ | |
| 9253 | struct got_entry *ent; | |
| 9254 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
| 9255 | if (ent->got.refcount > 0 | |
| 9256 | && (ent->tls_type & TLS_TPREL) != 0 | |
| e717da7e AM |
9257 | && ent->addend == gent->addend |
| 9258 | && ent->owner == gent->owner) | |
| 951fd09b AM |
9259 | { |
| 9260 | gent->got.refcount = 0; | |
| 9261 | break; | |
| 9262 | } | |
| 9263 | ||
| 9264 | /* If not, then we'll be using our own TPREL entry. */ | |
| 9265 | if (gent->got.refcount != 0) | |
| 9266 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
| 9267 | } | |
| 9268 | ||
| 7865406b AM |
9269 | /* Remove any list entry that won't generate a word in the GOT before |
| 9270 | we call merge_got_entries. Otherwise we risk merging to empty | |
| 9271 | entries. */ | |
| 0b8bcf0d AM |
9272 | pgent = &h->got.glist; |
| 9273 | while ((gent = *pgent) != NULL) | |
| 411e1bfb | 9274 | if (gent->got.refcount > 0) |
| 7865406b AM |
9275 | { |
| 9276 | if ((gent->tls_type & TLS_LD) != 0 | |
| 9277 | && !h->def_dynamic) | |
| 9278 | { | |
| 9279 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
| 9280 | *pgent = gent->next; | |
| 9281 | } | |
| 9282 | else | |
| 9283 | pgent = &gent->next; | |
| 9284 | } | |
| 9285 | else | |
| 9286 | *pgent = gent->next; | |
| 9287 | ||
| 9288 | if (!htab->do_multi_toc) | |
| 9289 | merge_got_entries (&h->got.glist); | |
| 9290 | ||
| 9291 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
| 9292 | if (!gent->is_indirect) | |
| 411e1bfb AM |
9293 | { |
| 9294 | /* Make sure this symbol is output as a dynamic symbol. | |
| 951fd09b AM |
9295 | Undefined weak syms won't yet be marked as dynamic, |
| 9296 | nor will all TLS symbols. */ | |
| 411e1bfb | 9297 | if (h->dynindx == -1 |
| b099ab9f | 9298 | && !h->forced_local |
| 25f23106 | 9299 | && h->type != STT_GNU_IFUNC |
| b099ab9f | 9300 | && htab->elf.dynamic_sections_created) |
| 411e1bfb | 9301 | { |
| c152c796 | 9302 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 411e1bfb AM |
9303 | return FALSE; |
| 9304 | } | |
| 65f38f15 | 9305 | |
| 0c8d6e5c | 9306 | if (!is_ppc64_elf (gent->owner)) |
| 927be08e | 9307 | abort (); |
| 0ffa91dd | 9308 | |
| 927be08e | 9309 | allocate_got (h, info, gent); |
| 411e1bfb | 9310 | } |
| 65f38f15 | 9311 | |
| b099ab9f | 9312 | if (eh->dyn_relocs == NULL |
| 25f23106 AM |
9313 | || (!htab->elf.dynamic_sections_created |
| 9314 | && h->type != STT_GNU_IFUNC)) | |
| b34976b6 | 9315 | return TRUE; |
| 65f38f15 AM |
9316 | |
| 9317 | /* In the shared -Bsymbolic case, discard space allocated for | |
| 9318 | dynamic pc-relative relocs against symbols which turn out to be | |
| 9319 | defined in regular objects. For the normal shared case, discard | |
| 9320 | space for relocs that have become local due to symbol visibility | |
| 9321 | changes. */ | |
| 9322 | ||
| 9323 | if (info->shared) | |
| 9324 | { | |
| 9c7a29a3 | 9325 | /* Relocs that use pc_count are those that appear on a call insn, |
| 1d483afe | 9326 | or certain REL relocs (see must_be_dyn_reloc) that can be |
| 9c7a29a3 AM |
9327 | generated via assembly. We want calls to protected symbols to |
| 9328 | resolve directly to the function rather than going via the plt. | |
| 9329 | If people want function pointer comparisons to work as expected | |
| 9330 | then they should avoid writing weird assembly. */ | |
| 09695f56 | 9331 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 65f38f15 | 9332 | { |
| 6061a67d | 9333 | struct elf_dyn_relocs **pp; |
| 65f38f15 AM |
9334 | |
| 9335 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
| 5bd4f169 | 9336 | { |
| 65f38f15 AM |
9337 | p->count -= p->pc_count; |
| 9338 | p->pc_count = 0; | |
| 9339 | if (p->count == 0) | |
| 9340 | *pp = p->next; | |
| 9341 | else | |
| 9342 | pp = &p->next; | |
| 5bd4f169 | 9343 | } |
| 65f38f15 | 9344 | } |
| 4e795f50 AM |
9345 | |
| 9346 | /* Also discard relocs on undefined weak syms with non-default | |
| 9347 | visibility. */ | |
| cab87ef9 AM |
9348 | if (eh->dyn_relocs != NULL |
| 9349 | && h->root.type == bfd_link_hash_undefweak) | |
| dfbb6ac9 AM |
9350 | { |
| 9351 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
| 9352 | eh->dyn_relocs = NULL; | |
| 9353 | ||
| 9354 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9355 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9356 | else if (h->dynindx == -1 | |
| 9357 | && !h->forced_local) | |
| 9358 | { | |
| 9359 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
| 9360 | return FALSE; | |
| 9361 | } | |
| 9362 | } | |
| 65f38f15 | 9363 | } |
| 25f23106 AM |
9364 | else if (h->type == STT_GNU_IFUNC) |
| 9365 | { | |
| 9366 | if (!h->non_got_ref) | |
| 9367 | eh->dyn_relocs = NULL; | |
| 9368 | } | |
| f4656909 | 9369 | else if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 AM |
9370 | { |
| 9371 | /* For the non-shared case, discard space for relocs against | |
| 9372 | symbols which turn out to need copy relocs or are not | |
| 9373 | dynamic. */ | |
| 9374 | ||
| f5385ebf | 9375 | if (!h->non_got_ref |
| f5385ebf | 9376 | && !h->def_regular) |
| 65f38f15 AM |
9377 | { |
| 9378 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9379 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9380 | if (h->dynindx == -1 | |
| f5385ebf | 9381 | && !h->forced_local) |
| 65f38f15 | 9382 | { |
| c152c796 | 9383 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| b34976b6 | 9384 | return FALSE; |
| 65f38f15 AM |
9385 | } |
| 9386 | ||
| 9387 | /* If that succeeded, we know we'll be keeping all the | |
| 9388 | relocs. */ | |
| 9389 | if (h->dynindx != -1) | |
| 9390 | goto keep; | |
| 9391 | } | |
| 9392 | ||
| 9393 | eh->dyn_relocs = NULL; | |
| 9394 | ||
| ec338859 | 9395 | keep: ; |
| 65f38f15 AM |
9396 | } |
| 9397 | ||
| 9398 | /* Finally, allocate space. */ | |
| 9399 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 9400 | { | |
| 9401 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
| 19e08130 | 9402 | if (eh->elf.type == STT_GNU_IFUNC) |
| 25f23106 | 9403 | sreloc = htab->reliplt; |
| eea6121a | 9404 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
| 65f38f15 AM |
9405 | } |
| 9406 | ||
| b34976b6 | 9407 | return TRUE; |
| 65f38f15 AM |
9408 | } |
| 9409 | ||
| 9410 | /* Find any dynamic relocs that apply to read-only sections. */ | |
| 9411 | ||
| b34976b6 | 9412 | static bfd_boolean |
| 4ce794b7 | 9413 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 65f38f15 AM |
9414 | { |
| 9415 | struct ppc_link_hash_entry *eh; | |
| 6061a67d | 9416 | struct elf_dyn_relocs *p; |
| 65f38f15 AM |
9417 | |
| 9418 | eh = (struct ppc_link_hash_entry *) h; | |
| 9419 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 9420 | { | |
| 9421 | asection *s = p->sec->output_section; | |
| 9422 | ||
| 9423 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 9424 | { | |
| 4ce794b7 | 9425 | struct bfd_link_info *info = inf; |
| 65f38f15 AM |
9426 | |
| 9427 | info->flags |= DF_TEXTREL; | |
| 9428 | ||
| 9429 | /* Not an error, just cut short the traversal. */ | |
| b34976b6 | 9430 | return FALSE; |
| 65f38f15 AM |
9431 | } |
| 9432 | } | |
| b34976b6 | 9433 | return TRUE; |
| 65f38f15 AM |
9434 | } |
| 9435 | ||
| 9436 | /* Set the sizes of the dynamic sections. */ | |
| 9437 | ||
| b34976b6 | 9438 | static bfd_boolean |
| ee67d69a | 9439 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
| 4ce794b7 | 9440 | struct bfd_link_info *info) |
| 65f38f15 AM |
9441 | { |
| 9442 | struct ppc_link_hash_table *htab; | |
| 9443 | bfd *dynobj; | |
| 9444 | asection *s; | |
| b34976b6 | 9445 | bfd_boolean relocs; |
| 65f38f15 | 9446 | bfd *ibfd; |
| 7865406b | 9447 | struct got_entry *first_tlsld; |
| 65f38f15 AM |
9448 | |
| 9449 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9450 | if (htab == NULL) |
| 9451 | return FALSE; | |
| 9452 | ||
| 65f38f15 AM |
9453 | dynobj = htab->elf.dynobj; |
| 9454 | if (dynobj == NULL) | |
| 9455 | abort (); | |
| 9456 | ||
| 9457 | if (htab->elf.dynamic_sections_created) | |
| 9458 | { | |
| 9459 | /* Set the contents of the .interp section to the interpreter. */ | |
| 36af4a4e | 9460 | if (info->executable) |
| 65f38f15 | 9461 | { |
| 3d4d4302 | 9462 | s = bfd_get_linker_section (dynobj, ".interp"); |
| 65f38f15 AM |
9463 | if (s == NULL) |
| 9464 | abort (); | |
| eea6121a | 9465 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 65f38f15 AM |
9466 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 9467 | } | |
| 9468 | } | |
| 9469 | ||
| 9470 | /* Set up .got offsets for local syms, and space for local dynamic | |
| 9471 | relocs. */ | |
| 9472 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 9473 | { | |
| 411e1bfb AM |
9474 | struct got_entry **lgot_ents; |
| 9475 | struct got_entry **end_lgot_ents; | |
| e054468f AM |
9476 | struct plt_entry **local_plt; |
| 9477 | struct plt_entry **end_local_plt; | |
| f961d9dd | 9478 | unsigned char *lgot_masks; |
| 65f38f15 AM |
9479 | bfd_size_type locsymcount; |
| 9480 | Elf_Internal_Shdr *symtab_hdr; | |
| 65f38f15 | 9481 | |
| 0c8d6e5c | 9482 | if (!is_ppc64_elf (ibfd)) |
| 65f38f15 AM |
9483 | continue; |
| 9484 | ||
| 9485 | for (s = ibfd->sections; s != NULL; s = s->next) | |
| 9486 | { | |
| 19e08130 | 9487 | struct ppc_dyn_relocs *p; |
| 65f38f15 | 9488 | |
| 6edfbbad | 9489 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 65f38f15 | 9490 | { |
| ec338859 AM |
9491 | if (!bfd_is_abs_section (p->sec) |
| 9492 | && bfd_is_abs_section (p->sec->output_section)) | |
| 9493 | { | |
| 9494 | /* Input section has been discarded, either because | |
| 9495 | it is a copy of a linkonce section or due to | |
| 9496 | linker script /DISCARD/, so we'll be discarding | |
| 9497 | the relocs too. */ | |
| 9498 | } | |
| 248866a8 | 9499 | else if (p->count != 0) |
| ec338859 | 9500 | { |
| 19e08130 AM |
9501 | asection *srel = elf_section_data (p->sec)->sreloc; |
| 9502 | if (p->ifunc) | |
| 25f23106 | 9503 | srel = htab->reliplt; |
| eea6121a | 9504 | srel->size += p->count * sizeof (Elf64_External_Rela); |
| 248866a8 AM |
9505 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 9506 | info->flags |= DF_TEXTREL; | |
| ec338859 | 9507 | } |
| 65f38f15 AM |
9508 | } |
| 9509 | } | |
| 9510 | ||
| 411e1bfb AM |
9511 | lgot_ents = elf_local_got_ents (ibfd); |
| 9512 | if (!lgot_ents) | |
| 65f38f15 AM |
9513 | continue; |
| 9514 | ||
| 0ffa91dd | 9515 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 65f38f15 | 9516 | locsymcount = symtab_hdr->sh_info; |
| 411e1bfb | 9517 | end_lgot_ents = lgot_ents + locsymcount; |
| e054468f AM |
9518 | local_plt = (struct plt_entry **) end_lgot_ents; |
| 9519 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 9520 | lgot_masks = (unsigned char *) end_local_plt; |
| e717da7e | 9521 | s = ppc64_elf_tdata (ibfd)->got; |
| e7b938ca | 9522 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 65f38f15 | 9523 | { |
| 0b8bcf0d | 9524 | struct got_entry **pent, *ent; |
| 411e1bfb | 9525 | |
| 0b8bcf0d AM |
9526 | pent = lgot_ents; |
| 9527 | while ((ent = *pent) != NULL) | |
| 411e1bfb AM |
9528 | if (ent->got.refcount > 0) |
| 9529 | { | |
| e7b938ca | 9530 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
| 411e1bfb | 9531 | { |
| 927be08e | 9532 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
| 0b8bcf0d | 9533 | *pent = ent->next; |
| 411e1bfb AM |
9534 | } |
| 9535 | else | |
| 9536 | { | |
| 19e08130 AM |
9537 | unsigned int ent_size = 8; |
| 9538 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 9539 | ||
| eea6121a | 9540 | ent->got.offset = s->size; |
| e7b938ca | 9541 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
| 927be08e | 9542 | { |
| 19e08130 AM |
9543 | ent_size *= 2; |
| 9544 | rel_size *= 2; | |
| 9545 | } | |
| 9546 | s->size += ent_size; | |
| 9547 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 9548 | { | |
| 9549 | htab->reliplt->size += rel_size; | |
| 9550 | htab->got_reli_size += rel_size; | |
| 9551 | } | |
| 9552 | else if (info->shared) | |
| 9553 | { | |
| 9554 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 9555 | srel->size += rel_size; | |
| 927be08e | 9556 | } |
| 0b8bcf0d | 9557 | pent = &ent->next; |
| 411e1bfb AM |
9558 | } |
| 9559 | } | |
| 9560 | else | |
| 0b8bcf0d | 9561 | *pent = ent->next; |
| 65f38f15 | 9562 | } |
| e054468f AM |
9563 | |
| 9564 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
| 9565 | for (; local_plt < end_local_plt; ++local_plt) | |
| 9566 | { | |
| 9567 | struct plt_entry *ent; | |
| 9568 | ||
| 9569 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
| 9570 | if (ent->plt.refcount > 0) | |
| 9571 | { | |
| 91d6fa6a | 9572 | s = htab->iplt; |
| e054468f AM |
9573 | ent->plt.offset = s->size; |
| 9574 | s->size += PLT_ENTRY_SIZE; | |
| 9575 | ||
| 25f23106 | 9576 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
| e054468f AM |
9577 | } |
| 9578 | else | |
| 9579 | ent->plt.offset = (bfd_vma) -1; | |
| 9580 | } | |
| 65f38f15 AM |
9581 | } |
| 9582 | ||
| 9583 | /* Allocate global sym .plt and .got entries, and space for global | |
| 9584 | sym dynamic relocs. */ | |
| 4ce794b7 | 9585 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
| 65f38f15 | 9586 | |
| 7865406b | 9587 | first_tlsld = NULL; |
| 102890f0 AM |
9588 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 9589 | { | |
| 7865406b AM |
9590 | struct got_entry *ent; |
| 9591 | ||
| 0c8d6e5c | 9592 | if (!is_ppc64_elf (ibfd)) |
| 102890f0 AM |
9593 | continue; |
| 9594 | ||
| 7865406b AM |
9595 | ent = ppc64_tlsld_got (ibfd); |
| 9596 | if (ent->got.refcount > 0) | |
| 102890f0 | 9597 | { |
| 7865406b | 9598 | if (!htab->do_multi_toc && first_tlsld != NULL) |
| 102890f0 | 9599 | { |
| 7865406b AM |
9600 | ent->is_indirect = TRUE; |
| 9601 | ent->got.ent = first_tlsld; | |
| 9602 | } | |
| 9603 | else | |
| 9604 | { | |
| 9605 | if (first_tlsld == NULL) | |
| 9606 | first_tlsld = ent; | |
| 9607 | s = ppc64_elf_tdata (ibfd)->got; | |
| 9608 | ent->got.offset = s->size; | |
| 9609 | ent->owner = ibfd; | |
| 9610 | s->size += 16; | |
| 9611 | if (info->shared) | |
| 9612 | { | |
| 9613 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 9614 | srel->size += sizeof (Elf64_External_Rela); | |
| 9615 | } | |
| 102890f0 AM |
9616 | } |
| 9617 | } | |
| 9618 | else | |
| 7865406b | 9619 | ent->got.offset = (bfd_vma) -1; |
| 102890f0 AM |
9620 | } |
| 9621 | ||
| 65f38f15 AM |
9622 | /* We now have determined the sizes of the various dynamic sections. |
| 9623 | Allocate memory for them. */ | |
| b34976b6 | 9624 | relocs = FALSE; |
| 65f38f15 AM |
9625 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 9626 | { | |
| 9627 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
| 9628 | continue; | |
| 9629 | ||
| 4ce794b7 | 9630 | if (s == htab->brlt || s == htab->relbrlt) |
| 721956f4 AM |
9631 | /* These haven't been allocated yet; don't strip. */ |
| 9632 | continue; | |
| e717da7e AM |
9633 | else if (s == htab->got |
| 9634 | || s == htab->plt | |
| e054468f | 9635 | || s == htab->iplt |
| c456f082 AM |
9636 | || s == htab->glink |
| 9637 | || s == htab->dynbss) | |
| 65f38f15 AM |
9638 | { |
| 9639 | /* Strip this section if we don't need it; see the | |
| 9640 | comment below. */ | |
| 5bd4f169 | 9641 | } |
| 58d180e8 AM |
9642 | else if (s == htab->glink_eh_frame) |
| 9643 | { | |
| 9644 | if (!bfd_is_abs_section (s->output_section)) | |
| 9645 | /* Not sized yet. */ | |
| 9646 | continue; | |
| 9647 | } | |
| 70cc837d | 9648 | else if (CONST_STRNEQ (s->name, ".rela")) |
| 5bd4f169 | 9649 | { |
| c456f082 | 9650 | if (s->size != 0) |
| 5bd4f169 | 9651 | { |
| 4ce794b7 | 9652 | if (s != htab->relplt) |
| b34976b6 | 9653 | relocs = TRUE; |
| 5bd4f169 AM |
9654 | |
| 9655 | /* We use the reloc_count field as a counter if we need | |
| 9656 | to copy relocs into the output file. */ | |
| 9657 | s->reloc_count = 0; | |
| 9658 | } | |
| 9659 | } | |
| 65f38f15 | 9660 | else |
| 5bd4f169 AM |
9661 | { |
| 9662 | /* It's not one of our sections, so don't allocate space. */ | |
| 9663 | continue; | |
| 9664 | } | |
| 9665 | ||
| eea6121a | 9666 | if (s->size == 0) |
| 5bd4f169 | 9667 | { |
| c456f082 AM |
9668 | /* If we don't need this section, strip it from the |
| 9669 | output file. This is mostly to handle .rela.bss and | |
| 9670 | .rela.plt. We must create both sections in | |
| 9671 | create_dynamic_sections, because they must be created | |
| 9672 | before the linker maps input sections to output | |
| 9673 | sections. The linker does that before | |
| 9674 | adjust_dynamic_symbol is called, and it is that | |
| 9675 | function which decides whether anything needs to go | |
| 9676 | into these sections. */ | |
| 8423293d | 9677 | s->flags |= SEC_EXCLUDE; |
| 5bd4f169 AM |
9678 | continue; |
| 9679 | } | |
| 9680 | ||
| c456f082 | 9681 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 5f333394 AM |
9682 | continue; |
| 9683 | ||
| 65f38f15 AM |
9684 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 9685 | here in case unused entries are not reclaimed before the | |
| 9686 | section's contents are written out. This should not happen, | |
| 411e1bfb AM |
9687 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
| 9688 | sections instead of garbage. | |
| 9689 | We also rely on the section contents being zero when writing | |
| 9690 | the GOT. */ | |
| eea6121a | 9691 | s->contents = bfd_zalloc (dynobj, s->size); |
| 65f38f15 | 9692 | if (s->contents == NULL) |
| b34976b6 | 9693 | return FALSE; |
| 5bd4f169 AM |
9694 | } |
| 9695 | ||
| e717da7e AM |
9696 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 9697 | { | |
| 0c8d6e5c | 9698 | if (!is_ppc64_elf (ibfd)) |
| 7b53ace3 AM |
9699 | continue; |
| 9700 | ||
| e717da7e AM |
9701 | s = ppc64_elf_tdata (ibfd)->got; |
| 9702 | if (s != NULL && s != htab->got) | |
| 9703 | { | |
| eea6121a | 9704 | if (s->size == 0) |
| 8423293d | 9705 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
9706 | else |
| 9707 | { | |
| eea6121a | 9708 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
9709 | if (s->contents == NULL) |
| 9710 | return FALSE; | |
| 9711 | } | |
| 9712 | } | |
| 9713 | s = ppc64_elf_tdata (ibfd)->relgot; | |
| 9714 | if (s != NULL) | |
| 9715 | { | |
| eea6121a | 9716 | if (s->size == 0) |
| 8423293d | 9717 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
9718 | else |
| 9719 | { | |
| eea6121a | 9720 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
9721 | if (s->contents == NULL) |
| 9722 | return FALSE; | |
| 9723 | relocs = TRUE; | |
| 9724 | s->reloc_count = 0; | |
| 9725 | } | |
| 9726 | } | |
| 9727 | } | |
| 9728 | ||
| e86ce104 | 9729 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 AM |
9730 | { |
| 9731 | /* Add some entries to the .dynamic section. We fill in the | |
| 9732 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
| 9733 | must add the entries now so that we get the correct size for | |
| 9734 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
| 9735 | dynamic linker and used by the debugger. */ | |
| dc810e39 | 9736 | #define add_dynamic_entry(TAG, VAL) \ |
| 5a580b3a | 9737 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| dc810e39 | 9738 | |
| 36af4a4e | 9739 | if (info->executable) |
| 5bd4f169 | 9740 | { |
| dc810e39 | 9741 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| b34976b6 | 9742 | return FALSE; |
| 5bd4f169 AM |
9743 | } |
| 9744 | ||
| eea6121a | 9745 | if (htab->plt != NULL && htab->plt->size != 0) |
| 5bd4f169 | 9746 | { |
| dc810e39 AM |
9747 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 9748 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
| 9749 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
| 5d1634d7 AM |
9750 | || !add_dynamic_entry (DT_JMPREL, 0) |
| 9751 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
| b34976b6 | 9752 | return FALSE; |
| 5bd4f169 AM |
9753 | } |
| 9754 | ||
| ee67d69a | 9755 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
| 19397422 AM |
9756 | { |
| 9757 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
| 9758 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
| b34976b6 | 9759 | return FALSE; |
| 19397422 AM |
9760 | } |
| 9761 | ||
| a7f2871e AM |
9762 | if (!htab->no_tls_get_addr_opt |
| 9763 | && htab->tls_get_addr_fd != NULL | |
| 9764 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
| 9765 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
| 9766 | return FALSE; | |
| 9767 | ||
| 5bd4f169 AM |
9768 | if (relocs) |
| 9769 | { | |
| dc810e39 AM |
9770 | if (!add_dynamic_entry (DT_RELA, 0) |
| 9771 | || !add_dynamic_entry (DT_RELASZ, 0) | |
| 9772 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
| b34976b6 | 9773 | return FALSE; |
| 5bd4f169 | 9774 | |
| 65f38f15 AM |
9775 | /* If any dynamic relocs apply to a read-only section, |
| 9776 | then we need a DT_TEXTREL entry. */ | |
| 248866a8 | 9777 | if ((info->flags & DF_TEXTREL) == 0) |
| 4ce794b7 | 9778 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
| 5bd4f169 | 9779 | |
| 65f38f15 | 9780 | if ((info->flags & DF_TEXTREL) != 0) |
| 5bd4f169 | 9781 | { |
| 65f38f15 | 9782 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| b34976b6 | 9783 | return FALSE; |
| 5bd4f169 | 9784 | } |
| 5bd4f169 | 9785 | } |
| 5bd4f169 | 9786 | } |
| 65f38f15 | 9787 | #undef add_dynamic_entry |
| 5bd4f169 | 9788 | |
| b34976b6 | 9789 | return TRUE; |
| 5bd4f169 AM |
9790 | } |
| 9791 | ||
| 721956f4 | 9792 | /* Determine the type of stub needed, if any, for a call. */ |
| 5bd4f169 | 9793 | |
| 4ce794b7 AM |
9794 | static inline enum ppc_stub_type |
| 9795 | ppc_type_of_stub (asection *input_sec, | |
| 9796 | const Elf_Internal_Rela *rel, | |
| 9797 | struct ppc_link_hash_entry **hash, | |
| e054468f | 9798 | struct plt_entry **plt_ent, |
| 4ce794b7 | 9799 | bfd_vma destination) |
| 5bd4f169 | 9800 | { |
| 721956f4 AM |
9801 | struct ppc_link_hash_entry *h = *hash; |
| 9802 | bfd_vma location; | |
| 9803 | bfd_vma branch_offset; | |
| 9804 | bfd_vma max_branch_offset; | |
| 4ce794b7 | 9805 | enum elf_ppc64_reloc_type r_type; |
| 5bd4f169 | 9806 | |
| 721956f4 AM |
9807 | if (h != NULL) |
| 9808 | { | |
| e054468f | 9809 | struct plt_entry *ent; |
| 7fe2b9a6 | 9810 | struct ppc_link_hash_entry *fdh = h; |
| b31867b6 AM |
9811 | if (h->oh != NULL |
| 9812 | && h->oh->is_func_descriptor) | |
| 7b8f6675 AM |
9813 | { |
| 9814 | fdh = ppc_follow_link (h->oh); | |
| 9815 | *hash = fdh; | |
| 9816 | } | |
| 8387904d | 9817 | |
| e054468f AM |
9818 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 9819 | if (ent->addend == rel->r_addend | |
| 9820 | && ent->plt.offset != (bfd_vma) -1) | |
| 9821 | { | |
| e054468f AM |
9822 | *plt_ent = ent; |
| 9823 | return ppc_stub_plt_call; | |
| 9824 | } | |
| 5bd4f169 | 9825 | |
| 7fe2b9a6 AM |
9826 | /* Here, we know we don't have a plt entry. If we don't have a |
| 9827 | either a defined function descriptor or a defined entry symbol | |
| 9828 | in a regular object file, then it is pointless trying to make | |
| 9829 | any other type of stub. */ | |
| 854b41e7 AM |
9830 | if (!is_static_defined (&fdh->elf) |
| 9831 | && !is_static_defined (&h->elf)) | |
| 721956f4 | 9832 | return ppc_stub_none; |
| 5d1634d7 | 9833 | } |
| e054468f AM |
9834 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
| 9835 | { | |
| 9836 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
| 9837 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 9838 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
| 9839 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9840 | ||
| 9841 | if (local_plt[r_symndx] != NULL) | |
| 9842 | { | |
| 9843 | struct plt_entry *ent; | |
| 9844 | ||
| 9845 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
| 9846 | if (ent->addend == rel->r_addend | |
| 9847 | && ent->plt.offset != (bfd_vma) -1) | |
| 9848 | { | |
| 9849 | *plt_ent = ent; | |
| 9850 | return ppc_stub_plt_call; | |
| 9851 | } | |
| 9852 | } | |
| 9853 | } | |
| 5d1634d7 | 9854 | |
| 721956f4 AM |
9855 | /* Determine where the call point is. */ |
| 9856 | location = (input_sec->output_offset | |
| 9857 | + input_sec->output_section->vma | |
| 9858 | + rel->r_offset); | |
| 5d1634d7 | 9859 | |
| 721956f4 AM |
9860 | branch_offset = destination - location; |
| 9861 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 5d1634d7 | 9862 | |
| 721956f4 AM |
9863 | /* Determine if a long branch stub is needed. */ |
| 9864 | max_branch_offset = 1 << 25; | |
| 4ce794b7 | 9865 | if (r_type != R_PPC64_REL24) |
| 721956f4 | 9866 | max_branch_offset = 1 << 15; |
| 5d1634d7 | 9867 | |
| 721956f4 AM |
9868 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
| 9869 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
| 9870 | is needed later. */ | |
| 9871 | return ppc_stub_long_branch; | |
| 5d1634d7 | 9872 | |
| 721956f4 | 9873 | return ppc_stub_none; |
| 5d1634d7 AM |
9874 | } |
| 9875 | ||
| 794e51c0 AM |
9876 | /* With power7 weakly ordered memory model, it is possible for ld.so |
| 9877 | to update a plt entry in one thread and have another thread see a | |
| 9878 | stale zero toc entry. To avoid this we need some sort of acquire | |
| 9879 | barrier in the call stub. One solution is to make the load of the | |
| 9880 | toc word seem to appear to depend on the load of the function entry | |
| 9881 | word. Another solution is to test for r2 being zero, and branch to | |
| 9882 | the appropriate glink entry if so. | |
| 9883 | ||
| 9884 | . fake dep barrier compare | |
| 71a39c98 AM |
9885 | . ld 12,xxx(2) ld 12,xxx(2) |
| 9886 | . mtctr 12 mtctr 12 | |
| 9887 | . xor 11,12,12 ld 2,xxx+8(2) | |
| 794e51c0 AM |
9888 | . add 2,2,11 cmpldi 2,0 |
| 9889 | . ld 2,xxx+8(2) bnectr+ | |
| 9890 | . bctr b <glink_entry> | |
| 9891 | ||
| 9892 | The solution involving the compare turns out to be faster, so | |
| 9893 | that's what we use unless the branch won't reach. */ | |
| 9894 | ||
| 9895 | #define ALWAYS_USE_FAKE_DEP 0 | |
| 9896 | #define ALWAYS_EMIT_R2SAVE 0 | |
| 5d1634d7 | 9897 | |
| 5d1634d7 AM |
9898 | #define PPC_LO(v) ((v) & 0xffff) |
| 9899 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
| 9900 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
| 9901 | ||
| 794e51c0 AM |
9902 | static inline unsigned int |
| 9903 | plt_stub_size (struct ppc_link_hash_table *htab, | |
| 9904 | struct ppc_stub_hash_entry *stub_entry, | |
| 9905 | bfd_vma off) | |
| 9906 | { | |
| 9907 | unsigned size = PLT_CALL_STUB_SIZE; | |
| 9908 | ||
| 9909 | if (!(ALWAYS_EMIT_R2SAVE | |
| 9910 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
| 9911 | size -= 4; | |
| 9912 | if (!htab->plt_static_chain) | |
| 9913 | size -= 4; | |
| 9914 | if (htab->plt_thread_safe) | |
| 9915 | size += 8; | |
| 9916 | if (PPC_HA (off) == 0) | |
| 9917 | size -= 4; | |
| 9918 | if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off)) | |
| 9919 | size += 4; | |
| 9920 | if (stub_entry->h != NULL | |
| 9921 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 9922 | || stub_entry->h == htab->tls_get_addr) | |
| 9923 | && !htab->no_tls_get_addr_opt) | |
| 9924 | size += 13 * 4; | |
| 9925 | return size; | |
| 9926 | } | |
| 9927 | ||
| 9928 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
| 9929 | then return the padding needed to do so. */ | |
| 9930 | static inline unsigned int | |
| 9931 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
| 9932 | struct ppc_stub_hash_entry *stub_entry, | |
| 9933 | bfd_vma plt_off) | |
| 9934 | { | |
| 9935 | int stub_align = 1 << htab->plt_stub_align; | |
| 9936 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); | |
| 9937 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
| 9938 | ||
| 9939 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
| 9940 | > (stub_size & -stub_align)) | |
| 9941 | return stub_align - (stub_off & (stub_align - 1)); | |
| 9942 | return 0; | |
| 9943 | } | |
| 9944 | ||
| 9945 | /* Build a .plt call stub. */ | |
| 9946 | ||
| 9947 | static inline bfd_byte * | |
| 9948 | build_plt_stub (struct ppc_link_hash_table *htab, | |
| 9949 | struct ppc_stub_hash_entry *stub_entry, | |
| 9950 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| 9951 | { | |
| 9952 | bfd *obfd = htab->stub_bfd; | |
| 9953 | bfd_boolean plt_static_chain = htab->plt_static_chain; | |
| 9954 | bfd_boolean plt_thread_safe = htab->plt_thread_safe; | |
| 9955 | bfd_boolean use_fake_dep = plt_thread_safe; | |
| 9956 | bfd_vma cmp_branch_off = 0; | |
| 9957 | ||
| 9958 | if (!ALWAYS_USE_FAKE_DEP | |
| 9959 | && plt_thread_safe | |
| 9960 | && !(stub_entry->h != NULL | |
| 9961 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 9962 | || stub_entry->h == htab->tls_get_addr) | |
| 9963 | && !htab->no_tls_get_addr_opt)) | |
| 9964 | { | |
| 9965 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
| 9966 | bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
| 9967 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; | |
| 9968 | bfd_vma to, from; | |
| 9969 | ||
| 68d62958 AM |
9970 | if (pltindex > 32768) |
| 9971 | glinkoff += (pltindex - 32768) * 4; | |
| 794e51c0 AM |
9972 | to = (glinkoff |
| 9973 | + htab->glink->output_offset | |
| 9974 | + htab->glink->output_section->vma); | |
| 9975 | from = (p - stub_entry->stub_sec->contents | |
| 9976 | + 4 * (ALWAYS_EMIT_R2SAVE | |
| 9977 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 9978 | + 4 * (PPC_HA (offset) != 0) | |
| 9979 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
| 9980 | != PPC_HA (offset)) | |
| 9981 | + 4 * (plt_static_chain != 0) | |
| 9982 | + 20 | |
| 9983 | + stub_entry->stub_sec->output_offset | |
| 9984 | + stub_entry->stub_sec->output_section->vma); | |
| 9985 | cmp_branch_off = to - from; | |
| 9986 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
| 9987 | } | |
| 9988 | ||
| ac2df442 AM |
9989 | if (PPC_HA (offset) != 0) |
| 9990 | { | |
| 176a0d42 AM |
9991 | if (r != NULL) |
| 9992 | { | |
| 794e51c0 AM |
9993 | if (ALWAYS_EMIT_R2SAVE |
| 9994 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 9995 | r[0].r_offset += 4; | |
| 176a0d42 | 9996 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
| 3b421ab3 | 9997 | r[1].r_offset = r[0].r_offset + 4; |
| 176a0d42 AM |
9998 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
| 9999 | r[1].r_addend = r[0].r_addend; | |
| c7131b65 | 10000 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| 176a0d42 AM |
10001 | { |
| 10002 | r[2].r_offset = r[1].r_offset + 4; | |
| 10003 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
| 10004 | r[2].r_addend = r[0].r_addend; | |
| 10005 | } | |
| 10006 | else | |
| 10007 | { | |
| 794e51c0 | 10008 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; |
| 176a0d42 AM |
10009 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
| 10010 | r[2].r_addend = r[0].r_addend + 8; | |
| c7131b65 AM |
10011 | if (plt_static_chain) |
| 10012 | { | |
| 10013 | r[3].r_offset = r[2].r_offset + 4; | |
| 10014 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10015 | r[3].r_addend = r[0].r_addend + 16; | |
| 10016 | } | |
| 176a0d42 AM |
10017 | } |
| 10018 | } | |
| 794e51c0 AM |
10019 | if (ALWAYS_EMIT_R2SAVE |
| 10020 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10021 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
| 71a39c98 AM |
10022 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; |
| 10023 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
| 9df0ef5f | 10024 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| ac2df442 | 10025 | { |
| 71a39c98 | 10026 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
| ac2df442 AM |
10027 | offset = 0; |
| 10028 | } | |
| 71a39c98 | 10029 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| 794e51c0 AM |
10030 | if (use_fake_dep) |
| 10031 | { | |
| 71a39c98 AM |
10032 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; |
| 10033 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
| 794e51c0 | 10034 | } |
| 71a39c98 | 10035 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; |
| 9df0ef5f | 10036 | if (plt_static_chain) |
| 71a39c98 | 10037 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; |
| ac2df442 AM |
10038 | } |
| 10039 | else | |
| 10040 | { | |
| 176a0d42 AM |
10041 | if (r != NULL) |
| 10042 | { | |
| 794e51c0 AM |
10043 | if (ALWAYS_EMIT_R2SAVE |
| 10044 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10045 | r[0].r_offset += 4; | |
| 176a0d42 | 10046 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
| c7131b65 | 10047 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| 176a0d42 AM |
10048 | { |
| 10049 | r[1].r_offset = r[0].r_offset + 4; | |
| 10050 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
| 10051 | r[1].r_addend = r[0].r_addend; | |
| 10052 | } | |
| 10053 | else | |
| 10054 | { | |
| 794e51c0 | 10055 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; |
| 176a0d42 | 10056 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
| c7131b65 AM |
10057 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; |
| 10058 | if (plt_static_chain) | |
| 10059 | { | |
| 10060 | r[2].r_offset = r[1].r_offset + 4; | |
| 10061 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10062 | r[2].r_addend = r[0].r_addend + 8; | |
| 10063 | } | |
| 176a0d42 AM |
10064 | } |
| 10065 | } | |
| 794e51c0 AM |
10066 | if (ALWAYS_EMIT_R2SAVE |
| 10067 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10068 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
| 71a39c98 | 10069 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
| 9df0ef5f | 10070 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| ac2df442 AM |
10071 | { |
| 10072 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
| 10073 | offset = 0; | |
| 10074 | } | |
| 71a39c98 | 10075 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| 794e51c0 AM |
10076 | if (use_fake_dep) |
| 10077 | { | |
| 71a39c98 | 10078 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; |
| 794e51c0 AM |
10079 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; |
| 10080 | } | |
| 9df0ef5f AM |
10081 | if (plt_static_chain) |
| 10082 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
| ac2df442 | 10083 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; |
| ac2df442 | 10084 | } |
| 794e51c0 AM |
10085 | if (plt_thread_safe && !use_fake_dep) |
| 10086 | { | |
| 10087 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
| 10088 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
| 22aa0c7e | 10089 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
| 794e51c0 AM |
10090 | } |
| 10091 | else | |
| 10092 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 5d1634d7 AM |
10093 | return p; |
| 10094 | } | |
| 10095 | ||
| a7f2871e AM |
10096 | /* Build a special .plt call stub for __tls_get_addr. */ |
| 10097 | ||
| 10098 | #define LD_R11_0R3 0xe9630000 | |
| 10099 | #define LD_R12_0R3 0xe9830000 | |
| 10100 | #define MR_R0_R3 0x7c601b78 | |
| 10101 | #define CMPDI_R11_0 0x2c2b0000 | |
| 10102 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
| 10103 | #define BEQLR 0x4d820020 | |
| 10104 | #define MR_R3_R0 0x7c030378 | |
| 10105 | #define MFLR_R11 0x7d6802a6 | |
| 10106 | #define STD_R11_0R1 0xf9610000 | |
| 10107 | #define BCTRL 0x4e800421 | |
| 10108 | #define LD_R11_0R1 0xe9610000 | |
| 10109 | #define LD_R2_0R1 0xe8410000 | |
| 10110 | #define MTLR_R11 0x7d6803a6 | |
| 10111 | ||
| 10112 | static inline bfd_byte * | |
| 794e51c0 AM |
10113 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
| 10114 | struct ppc_stub_hash_entry *stub_entry, | |
| 10115 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| a7f2871e | 10116 | { |
| 794e51c0 AM |
10117 | bfd *obfd = htab->stub_bfd; |
| 10118 | ||
| a7f2871e AM |
10119 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
| 10120 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
| 10121 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
| 10122 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
| 10123 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
| 10124 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
| 10125 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
| 10126 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
| 10127 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
| 10128 | ||
| 10129 | if (r != NULL) | |
| 10130 | r[0].r_offset += 9 * 4; | |
| 794e51c0 | 10131 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
| a7f2871e AM |
10132 | bfd_put_32 (obfd, BCTRL, p - 4); |
| 10133 | ||
| 10134 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
| 10135 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
| 10136 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
| 10137 | bfd_put_32 (obfd, BLR, p), p += 4; | |
| 10138 | ||
| 10139 | return p; | |
| 10140 | } | |
| 10141 | ||
| 176a0d42 AM |
10142 | static Elf_Internal_Rela * |
| 10143 | get_relocs (asection *sec, int count) | |
| 10144 | { | |
| 10145 | Elf_Internal_Rela *relocs; | |
| 10146 | struct bfd_elf_section_data *elfsec_data; | |
| 10147 | ||
| 10148 | elfsec_data = elf_section_data (sec); | |
| 10149 | relocs = elfsec_data->relocs; | |
| 10150 | if (relocs == NULL) | |
| 10151 | { | |
| 10152 | bfd_size_type relsize; | |
| 10153 | relsize = sec->reloc_count * sizeof (*relocs); | |
| 10154 | relocs = bfd_alloc (sec->owner, relsize); | |
| 10155 | if (relocs == NULL) | |
| 10156 | return NULL; | |
| 10157 | elfsec_data->relocs = relocs; | |
| d4730f92 BS |
10158 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
| 10159 | sizeof (Elf_Internal_Shdr)); | |
| 10160 | if (elfsec_data->rela.hdr == NULL) | |
| 10161 | return NULL; | |
| 10162 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
| 10163 | * sizeof (Elf64_External_Rela)); | |
| 10164 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
| 176a0d42 AM |
10165 | sec->reloc_count = 0; |
| 10166 | } | |
| 10167 | relocs += sec->reloc_count; | |
| 10168 | sec->reloc_count += count; | |
| 10169 | return relocs; | |
| 10170 | } | |
| 10171 | ||
| aa374f67 | 10172 | static bfd_vma |
| 25f53a85 | 10173 | get_r2off (struct bfd_link_info *info, |
| aa374f67 AM |
10174 | struct ppc_stub_hash_entry *stub_entry) |
| 10175 | { | |
| 25f53a85 | 10176 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| aa374f67 AM |
10177 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
| 10178 | ||
| 10179 | if (r2off == 0) | |
| 10180 | { | |
| 10181 | /* Support linking -R objects. Get the toc pointer from the | |
| 10182 | opd entry. */ | |
| 10183 | char buf[8]; | |
| 10184 | asection *opd = stub_entry->h->elf.root.u.def.section; | |
| 10185 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
| 10186 | ||
| 10187 | if (strcmp (opd->name, ".opd") != 0 | |
| 10188 | || opd->reloc_count != 0) | |
| 10189 | { | |
| bc30df16 | 10190 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
| 25f53a85 | 10191 | stub_entry->h->elf.root.root.string); |
| aa374f67 AM |
10192 | bfd_set_error (bfd_error_bad_value); |
| 10193 | return 0; | |
| 10194 | } | |
| 10195 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
| 10196 | return 0; | |
| 10197 | r2off = bfd_get_64 (opd->owner, buf); | |
| 25f53a85 | 10198 | r2off -= elf_gp (info->output_bfd); |
| aa374f67 AM |
10199 | } |
| 10200 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
| 10201 | return r2off; | |
| 10202 | } | |
| 10203 | ||
| b34976b6 | 10204 | static bfd_boolean |
| 4ce794b7 | 10205 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 5d1634d7 | 10206 | { |
| 721956f4 AM |
10207 | struct ppc_stub_hash_entry *stub_entry; |
| 10208 | struct ppc_branch_hash_entry *br_entry; | |
| 5d1634d7 AM |
10209 | struct bfd_link_info *info; |
| 10210 | struct ppc_link_hash_table *htab; | |
| 721956f4 AM |
10211 | bfd_byte *loc; |
| 10212 | bfd_byte *p; | |
| ee75fd95 | 10213 | bfd_vma dest, off; |
| 721956f4 | 10214 | int size; |
| 176a0d42 | 10215 | Elf_Internal_Rela *r; |
| e054468f | 10216 | asection *plt; |
| 5d1634d7 | 10217 | |
| 721956f4 AM |
10218 | /* Massage our args to the form they really have. */ |
| 10219 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 4ce794b7 | 10220 | info = in_arg; |
| 5d1634d7 | 10221 | |
| 5d1634d7 | 10222 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
10223 | if (htab == NULL) |
| 10224 | return FALSE; | |
| 5d1634d7 | 10225 | |
| 721956f4 | 10226 | /* Make a note of the offset within the stubs for this entry. */ |
| eea6121a | 10227 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
| 97b639ba | 10228 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
| 721956f4 | 10229 | |
| 4ce794b7 | 10230 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
| 721956f4 | 10231 | switch (stub_entry->stub_type) |
| 5d1634d7 | 10232 | { |
| 721956f4 | 10233 | case ppc_stub_long_branch: |
| ad8e1ba5 | 10234 | case ppc_stub_long_branch_r2off: |
| 721956f4 | 10235 | /* Branches are relative. This is where we are going to. */ |
| ee75fd95 AM |
10236 | off = dest = (stub_entry->target_value |
| 10237 | + stub_entry->target_section->output_offset | |
| 10238 | + stub_entry->target_section->output_section->vma); | |
| 5d1634d7 | 10239 | |
| 721956f4 AM |
10240 | /* And this is where we are coming from. */ |
| 10241 | off -= (stub_entry->stub_offset | |
| 97b639ba AM |
10242 | + stub_entry->stub_sec->output_offset |
| 10243 | + stub_entry->stub_sec->output_section->vma); | |
| e86ce104 | 10244 | |
| ac2df442 AM |
10245 | size = 4; |
| 10246 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| ad8e1ba5 | 10247 | { |
| 25f53a85 | 10248 | bfd_vma r2off = get_r2off (info, stub_entry); |
| ad8e1ba5 | 10249 | |
| aa374f67 AM |
10250 | if (r2off == 0) |
| 10251 | { | |
| 10252 | htab->stub_error = TRUE; | |
| 10253 | return FALSE; | |
| 10254 | } | |
| 97b639ba | 10255 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
| ad8e1ba5 | 10256 | loc += 4; |
| ac2df442 AM |
10257 | size = 12; |
| 10258 | if (PPC_HA (r2off) != 0) | |
| 10259 | { | |
| 10260 | size = 16; | |
| 10261 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 10262 | loc += 4; | |
| 10263 | } | |
| 97b639ba | 10264 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 | 10265 | loc += 4; |
| ac2df442 | 10266 | off -= size - 4; |
| ad8e1ba5 | 10267 | } |
| 97b639ba | 10268 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
| ad8e1ba5 | 10269 | |
| 5c3dead3 AM |
10270 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 10271 | { | |
| bc30df16 AM |
10272 | info->callbacks->einfo |
| 10273 | (_("%P: long branch stub `%s' offset overflow\n"), | |
| 10274 | stub_entry->root.string); | |
| 5c3dead3 AM |
10275 | htab->stub_error = TRUE; |
| 10276 | return FALSE; | |
| 10277 | } | |
| ee75fd95 AM |
10278 | |
| 10279 | if (info->emitrelocations) | |
| 10280 | { | |
| 176a0d42 AM |
10281 | r = get_relocs (stub_entry->stub_sec, 1); |
| 10282 | if (r == NULL) | |
| 10283 | return FALSE; | |
| ee75fd95 AM |
10284 | r->r_offset = loc - stub_entry->stub_sec->contents; |
| 10285 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
| 10286 | r->r_addend = dest; | |
| 10287 | if (stub_entry->h != NULL) | |
| 10288 | { | |
| 10289 | struct elf_link_hash_entry **hashes; | |
| 10290 | unsigned long symndx; | |
| 10291 | struct ppc_link_hash_entry *h; | |
| 10292 | ||
| 10293 | hashes = elf_sym_hashes (htab->stub_bfd); | |
| 10294 | if (hashes == NULL) | |
| 10295 | { | |
| 10296 | bfd_size_type hsize; | |
| 10297 | ||
| 10298 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
| 10299 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
| 10300 | if (hashes == NULL) | |
| 10301 | return FALSE; | |
| 10302 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
| 10303 | htab->stub_globals = 1; | |
| 10304 | } | |
| 10305 | symndx = htab->stub_globals++; | |
| 10306 | h = stub_entry->h; | |
| 10307 | hashes[symndx] = &h->elf; | |
| 10308 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
| 10309 | if (h->oh != NULL && h->oh->is_func) | |
| b31867b6 | 10310 | h = ppc_follow_link (h->oh); |
| ee75fd95 AM |
10311 | if (h->elf.root.u.def.section != stub_entry->target_section) |
| 10312 | /* H is an opd symbol. The addend must be zero. */ | |
| 10313 | r->r_addend = 0; | |
| 10314 | else | |
| 10315 | { | |
| 10316 | off = (h->elf.root.u.def.value | |
| 10317 | + h->elf.root.u.def.section->output_offset | |
| 10318 | + h->elf.root.u.def.section->output_section->vma); | |
| 10319 | r->r_addend -= off; | |
| 10320 | } | |
| 10321 | } | |
| 10322 | } | |
| 721956f4 | 10323 | break; |
| e86ce104 | 10324 | |
| 721956f4 | 10325 | case ppc_stub_plt_branch: |
| ad8e1ba5 | 10326 | case ppc_stub_plt_branch_r2off: |
| 721956f4 AM |
10327 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
| 10328 | stub_entry->root.string + 9, | |
| b34976b6 | 10329 | FALSE, FALSE); |
| 721956f4 AM |
10330 | if (br_entry == NULL) |
| 10331 | { | |
| 8de848d8 | 10332 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
| 25f53a85 | 10333 | stub_entry->root.string); |
| b34976b6 AM |
10334 | htab->stub_error = TRUE; |
| 10335 | return FALSE; | |
| 721956f4 AM |
10336 | } |
| 10337 | ||
| 176a0d42 AM |
10338 | dest = (stub_entry->target_value |
| 10339 | + stub_entry->target_section->output_offset | |
| 10340 | + stub_entry->target_section->output_section->vma); | |
| 721956f4 | 10341 | |
| 176a0d42 | 10342 | bfd_put_64 (htab->brlt->owner, dest, |
| 4ce794b7 | 10343 | htab->brlt->contents + br_entry->offset); |
| 721956f4 | 10344 | |
| f94498ff | 10345 | if (br_entry->iter == htab->stub_iteration) |
| 721956f4 | 10346 | { |
| f94498ff | 10347 | br_entry->iter = 0; |
| 84f5d08e | 10348 | |
| f94498ff | 10349 | if (htab->relbrlt != NULL) |
| 84f5d08e | 10350 | { |
| f94498ff AM |
10351 | /* Create a reloc for the branch lookup table entry. */ |
| 10352 | Elf_Internal_Rela rela; | |
| 10353 | bfd_byte *rl; | |
| 10354 | ||
| 10355 | rela.r_offset = (br_entry->offset | |
| 10356 | + htab->brlt->output_offset | |
| 10357 | + htab->brlt->output_section->vma); | |
| 10358 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 10359 | rela.r_addend = dest; |
| f94498ff AM |
10360 | |
| 10361 | rl = htab->relbrlt->contents; | |
| 10362 | rl += (htab->relbrlt->reloc_count++ | |
| 10363 | * sizeof (Elf64_External_Rela)); | |
| 10364 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
| 10365 | } | |
| 10366 | else if (info->emitrelocations) | |
| 10367 | { | |
| 176a0d42 AM |
10368 | r = get_relocs (htab->brlt, 1); |
| 10369 | if (r == NULL) | |
| 10370 | return FALSE; | |
| 10371 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
| 10372 | normal reloc processing. Symbols and offsets are not | |
| 10373 | translated from input file to output file form, so | |
| 10374 | set up the offset per the output file. */ | |
| f94498ff AM |
10375 | r->r_offset = (br_entry->offset |
| 10376 | + htab->brlt->output_offset | |
| 10377 | + htab->brlt->output_section->vma); | |
| 10378 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 10379 | r->r_addend = dest; |
| 84f5d08e | 10380 | } |
| 84f5d08e | 10381 | } |
| 721956f4 | 10382 | |
| 176a0d42 AM |
10383 | dest = (br_entry->offset |
| 10384 | + htab->brlt->output_offset | |
| 10385 | + htab->brlt->output_section->vma); | |
| 10386 | ||
| 10387 | off = (dest | |
| 4ce794b7 | 10388 | - elf_gp (htab->brlt->output_section->owner) |
| ad8e1ba5 | 10389 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10390 | |
| ad8e1ba5 | 10391 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 5d1634d7 | 10392 | { |
| 25f53a85 | 10393 | info->callbacks->einfo |
| bc30df16 | 10394 | (_("%P: linkage table error against `%T'\n"), |
| 721956f4 | 10395 | stub_entry->root.string); |
| 5d1634d7 | 10396 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
10397 | htab->stub_error = TRUE; |
| 10398 | return FALSE; | |
| 5d1634d7 | 10399 | } |
| 41bd81ab | 10400 | |
| 176a0d42 AM |
10401 | if (info->emitrelocations) |
| 10402 | { | |
| 10403 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
| 10404 | if (r == NULL) | |
| 10405 | return FALSE; | |
| 10406 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
10407 | if (bfd_big_endian (info->output_bfd)) |
| 10408 | r[0].r_offset += 2; | |
| 176a0d42 AM |
10409 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
| 10410 | r[0].r_offset += 4; | |
| 10411 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10412 | r[0].r_addend = dest; | |
| 10413 | if (PPC_HA (off) != 0) | |
| 10414 | { | |
| 10415 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 10416 | r[1].r_offset = r[0].r_offset + 4; | |
| 10417 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10418 | r[1].r_addend = r[0].r_addend; | |
| 10419 | } | |
| 10420 | } | |
| 10421 | ||
| ad8e1ba5 AM |
10422 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 10423 | { | |
| 176a0d42 | 10424 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10425 | { |
| 10426 | size = 16; | |
| 71a39c98 | 10427 | bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc); |
| ac2df442 | 10428 | loc += 4; |
| 71a39c98 | 10429 | bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc); |
| ac2df442 AM |
10430 | } |
| 10431 | else | |
| 10432 | { | |
| 10433 | size = 12; | |
| 71a39c98 | 10434 | bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
| ac2df442 | 10435 | } |
| ad8e1ba5 AM |
10436 | } |
| 10437 | else | |
| 10438 | { | |
| 25f53a85 | 10439 | bfd_vma r2off = get_r2off (info, stub_entry); |
| aa374f67 AM |
10440 | |
| 10441 | if (r2off == 0) | |
| 10442 | { | |
| 10443 | htab->stub_error = TRUE; | |
| 10444 | return FALSE; | |
| 10445 | } | |
| ad8e1ba5 | 10446 | |
| 97b639ba | 10447 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
| ad8e1ba5 | 10448 | loc += 4; |
| ac2df442 | 10449 | size = 20; |
| 176a0d42 | 10450 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10451 | { |
| 10452 | size += 4; | |
| 71a39c98 | 10453 | bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc); |
| ac2df442 | 10454 | loc += 4; |
| 71a39c98 | 10455 | bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc); |
| ac2df442 AM |
10456 | loc += 4; |
| 10457 | } | |
| 10458 | else | |
| 10459 | { | |
| 71a39c98 | 10460 | bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
| ac2df442 AM |
10461 | loc += 4; |
| 10462 | } | |
| 10463 | ||
| 10464 | if (PPC_HA (r2off) != 0) | |
| 10465 | { | |
| 10466 | size += 4; | |
| 10467 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 10468 | loc += 4; | |
| 10469 | } | |
| 97b639ba | 10470 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 AM |
10471 | } |
| 10472 | loc += 4; | |
| 71a39c98 | 10473 | bfd_put_32 (htab->stub_bfd, MTCTR_R12, loc); |
| ad8e1ba5 | 10474 | loc += 4; |
| 97b639ba | 10475 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
| 721956f4 | 10476 | break; |
| 5d1634d7 | 10477 | |
| 721956f4 | 10478 | case ppc_stub_plt_call: |
| 794e51c0 | 10479 | case ppc_stub_plt_call_r2save: |
| e054468f | 10480 | if (stub_entry->h != NULL |
| b31867b6 AM |
10481 | && stub_entry->h->is_func_descriptor |
| 10482 | && stub_entry->h->oh != NULL) | |
| c862ae31 | 10483 | { |
| b31867b6 AM |
10484 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
| 10485 | ||
| 10486 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
| 10487 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
| 10488 | FIXME: We used to define the symbol on one of the call | |
| 10489 | stubs instead, which is why we test symbol section id | |
| 10490 | against htab->top_id in various places. Likely all | |
| 10491 | these checks could now disappear. */ | |
| 10492 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
| 10493 | fh->elf.root.type = bfd_link_hash_undefweak; | |
| 9507a174 AM |
10494 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
| 10495 | fh->was_undefined = 0; | |
| c862ae31 AM |
10496 | } |
| 10497 | ||
| 721956f4 | 10498 | /* Now build the stub. */ |
| e054468f | 10499 | dest = stub_entry->plt_ent->plt.offset & ~1; |
| 176a0d42 | 10500 | if (dest >= (bfd_vma) -2) |
| 721956f4 AM |
10501 | abort (); |
| 10502 | ||
| e054468f | 10503 | plt = htab->plt; |
| 25f23106 AM |
10504 | if (!htab->elf.dynamic_sections_created |
| 10505 | || stub_entry->h == NULL | |
| 10506 | || stub_entry->h->elf.dynindx == -1) | |
| e054468f AM |
10507 | plt = htab->iplt; |
| 10508 | ||
| 10509 | dest += plt->output_offset + plt->output_section->vma; | |
| 10510 | ||
| 10511 | if (stub_entry->h == NULL | |
| 10512 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
| 10513 | { | |
| 10514 | Elf_Internal_Rela rela; | |
| 10515 | bfd_byte *rl; | |
| 10516 | ||
| 10517 | rela.r_offset = dest; | |
| ee67d69a AM |
10518 | if (htab->opd_abi) |
| 10519 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 10520 | else | |
| 10521 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
10522 | rela.r_addend = (stub_entry->target_value |
| 10523 | + stub_entry->target_section->output_offset | |
| 10524 | + stub_entry->target_section->output_section->vma); | |
| 10525 | ||
| 25f23106 AM |
10526 | rl = (htab->reliplt->contents |
| 10527 | + (htab->reliplt->reloc_count++ | |
| 10528 | * sizeof (Elf64_External_Rela))); | |
| 10529 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
| e054468f AM |
10530 | stub_entry->plt_ent->plt.offset |= 1; |
| 10531 | } | |
| 176a0d42 AM |
10532 | |
| 10533 | off = (dest | |
| e054468f | 10534 | - elf_gp (plt->output_section->owner) |
| 176a0d42 | 10535 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10536 | |
| ad8e1ba5 | 10537 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 721956f4 | 10538 | { |
| 25f53a85 | 10539 | info->callbacks->einfo |
| bc30df16 | 10540 | (_("%P: linkage table error against `%T'\n"), |
| e054468f AM |
10541 | stub_entry->h != NULL |
| 10542 | ? stub_entry->h->elf.root.root.string | |
| 10543 | : "<local sym>"); | |
| 721956f4 | 10544 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
10545 | htab->stub_error = TRUE; |
| 10546 | return FALSE; | |
| 721956f4 AM |
10547 | } |
| 10548 | ||
| 794e51c0 AM |
10549 | if (htab->plt_stub_align != 0) |
| 10550 | { | |
| 10551 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
| 10552 | ||
| 10553 | stub_entry->stub_sec->size += pad; | |
| 10554 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
| 10555 | loc += pad; | |
| 10556 | } | |
| 10557 | ||
| 176a0d42 AM |
10558 | r = NULL; |
| 10559 | if (info->emitrelocations) | |
| 10560 | { | |
| 10561 | r = get_relocs (stub_entry->stub_sec, | |
| c7131b65 AM |
10562 | (2 |
| 10563 | + (PPC_HA (off) != 0) | |
| 10564 | + (htab->plt_static_chain | |
| 10565 | && PPC_HA (off + 16) == PPC_HA (off)))); | |
| 176a0d42 AM |
10566 | if (r == NULL) |
| 10567 | return FALSE; | |
| 10568 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
10569 | if (bfd_big_endian (info->output_bfd)) |
| 10570 | r[0].r_offset += 2; | |
| 176a0d42 AM |
10571 | r[0].r_addend = dest; |
| 10572 | } | |
| a7f2871e AM |
10573 | if (stub_entry->h != NULL |
| 10574 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 10575 | || stub_entry->h == htab->tls_get_addr) | |
| 10576 | && !htab->no_tls_get_addr_opt) | |
| 794e51c0 | 10577 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
| a7f2871e | 10578 | else |
| 794e51c0 | 10579 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
| 721956f4 AM |
10580 | size = p - loc; |
| 10581 | break; | |
| 10582 | ||
| 10583 | default: | |
| 10584 | BFD_FAIL (); | |
| b34976b6 | 10585 | return FALSE; |
| 721956f4 AM |
10586 | } |
| 10587 | ||
| eea6121a | 10588 | stub_entry->stub_sec->size += size; |
| 97b639ba | 10589 | |
| ee75fd95 | 10590 | if (htab->emit_stub_syms) |
| 97b639ba AM |
10591 | { |
| 10592 | struct elf_link_hash_entry *h; | |
| ee75fd95 AM |
10593 | size_t len1, len2; |
| 10594 | char *name; | |
| 10595 | const char *const stub_str[] = { "long_branch", | |
| 10596 | "long_branch_r2off", | |
| 10597 | "plt_branch", | |
| 10598 | "plt_branch_r2off", | |
| 794e51c0 | 10599 | "plt_call", |
| ee75fd95 AM |
10600 | "plt_call" }; |
| 10601 | ||
| 10602 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
| 10603 | len2 = strlen (stub_entry->root.string); | |
| 10604 | name = bfd_malloc (len1 + len2 + 2); | |
| 10605 | if (name == NULL) | |
| 10606 | return FALSE; | |
| 10607 | memcpy (name, stub_entry->root.string, 9); | |
| 10608 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
| 10609 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
| 10610 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 97b639ba AM |
10611 | if (h == NULL) |
| 10612 | return FALSE; | |
| 10613 | if (h->root.type == bfd_link_hash_new) | |
| 10614 | { | |
| 10615 | h->root.type = bfd_link_hash_defined; | |
| 10616 | h->root.u.def.section = stub_entry->stub_sec; | |
| 10617 | h->root.u.def.value = stub_entry->stub_offset; | |
| f5385ebf AM |
10618 | h->ref_regular = 1; |
| 10619 | h->def_regular = 1; | |
| 10620 | h->ref_regular_nonweak = 1; | |
| 10621 | h->forced_local = 1; | |
| 10622 | h->non_elf = 0; | |
| 97b639ba AM |
10623 | } |
| 10624 | } | |
| 10625 | ||
| b34976b6 | 10626 | return TRUE; |
| 721956f4 AM |
10627 | } |
| 10628 | ||
| 10629 | /* As above, but don't actually build the stub. Just bump offset so | |
| 10630 | we know stub section sizes, and select plt_branch stubs where | |
| 10631 | long_branch stubs won't do. */ | |
| 10632 | ||
| b34976b6 | 10633 | static bfd_boolean |
| 4ce794b7 | 10634 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 721956f4 AM |
10635 | { |
| 10636 | struct ppc_stub_hash_entry *stub_entry; | |
| 63bc6f6c | 10637 | struct bfd_link_info *info; |
| 721956f4 AM |
10638 | struct ppc_link_hash_table *htab; |
| 10639 | bfd_vma off; | |
| 10640 | int size; | |
| 10641 | ||
| 10642 | /* Massage our args to the form they really have. */ | |
| 10643 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 63bc6f6c AM |
10644 | info = in_arg; |
| 10645 | ||
| 10646 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
10647 | if (htab == NULL) |
| 10648 | return FALSE; | |
| 721956f4 | 10649 | |
| 794e51c0 AM |
10650 | if (stub_entry->stub_type == ppc_stub_plt_call |
| 10651 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 721956f4 | 10652 | { |
| e054468f AM |
10653 | asection *plt; |
| 10654 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
| 58ac9f71 | 10655 | if (off >= (bfd_vma) -2) |
| 411e1bfb | 10656 | abort (); |
| e054468f | 10657 | plt = htab->plt; |
| 25f23106 AM |
10658 | if (!htab->elf.dynamic_sections_created |
| 10659 | || stub_entry->h == NULL | |
| 10660 | || stub_entry->h->elf.dynindx == -1) | |
| e054468f AM |
10661 | plt = htab->iplt; |
| 10662 | off += (plt->output_offset | |
| 10663 | + plt->output_section->vma | |
| 10664 | - elf_gp (plt->output_section->owner) | |
| ad8e1ba5 | 10665 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10666 | |
| 794e51c0 AM |
10667 | size = plt_stub_size (htab, stub_entry, off); |
| 10668 | if (htab->plt_stub_align) | |
| 10669 | size += plt_stub_pad (htab, stub_entry, off); | |
| 176a0d42 AM |
10670 | if (info->emitrelocations) |
| 10671 | { | |
| 10672 | stub_entry->stub_sec->reloc_count | |
| c7131b65 AM |
10673 | += (2 |
| 10674 | + (PPC_HA (off) != 0) | |
| 10675 | + (htab->plt_static_chain | |
| 10676 | && PPC_HA (off + 16) == PPC_HA (off))); | |
| 176a0d42 AM |
10677 | stub_entry->stub_sec->flags |= SEC_RELOC; |
| 10678 | } | |
| 721956f4 AM |
10679 | } |
| 10680 | else | |
| 10681 | { | |
| ad8e1ba5 AM |
10682 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
| 10683 | variants. */ | |
| ac2df442 AM |
10684 | bfd_vma r2off = 0; |
| 10685 | ||
| 721956f4 AM |
10686 | off = (stub_entry->target_value |
| 10687 | + stub_entry->target_section->output_offset | |
| 10688 | + stub_entry->target_section->output_section->vma); | |
| eea6121a | 10689 | off -= (stub_entry->stub_sec->size |
| 721956f4 AM |
10690 | + stub_entry->stub_sec->output_offset |
| 10691 | + stub_entry->stub_sec->output_section->vma); | |
| 10692 | ||
| ad8e1ba5 AM |
10693 | /* Reset the stub type from the plt variant in case we now |
| 10694 | can reach with a shorter stub. */ | |
| 10695 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
| 10696 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
| 10697 | ||
| 10698 | size = 4; | |
| 10699 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| 10700 | { | |
| 25f53a85 | 10701 | r2off = get_r2off (info, stub_entry); |
| aa374f67 AM |
10702 | if (r2off == 0) |
| 10703 | { | |
| 10704 | htab->stub_error = TRUE; | |
| 10705 | return FALSE; | |
| 10706 | } | |
| ac2df442 AM |
10707 | size = 12; |
| 10708 | if (PPC_HA (r2off) != 0) | |
| 10709 | size = 16; | |
| 10710 | off -= size - 4; | |
| ad8e1ba5 AM |
10711 | } |
| 10712 | ||
| 10713 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
| 721956f4 AM |
10714 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 10715 | { | |
| 10716 | struct ppc_branch_hash_entry *br_entry; | |
| 10717 | ||
| 10718 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
| 10719 | stub_entry->root.string + 9, | |
| b34976b6 | 10720 | TRUE, FALSE); |
| 721956f4 AM |
10721 | if (br_entry == NULL) |
| 10722 | { | |
| 8de848d8 | 10723 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
| 25f53a85 | 10724 | stub_entry->root.string); |
| b34976b6 AM |
10725 | htab->stub_error = TRUE; |
| 10726 | return FALSE; | |
| 721956f4 AM |
10727 | } |
| 10728 | ||
| 10729 | if (br_entry->iter != htab->stub_iteration) | |
| 10730 | { | |
| 10731 | br_entry->iter = htab->stub_iteration; | |
| eea6121a AM |
10732 | br_entry->offset = htab->brlt->size; |
| 10733 | htab->brlt->size += 8; | |
| 63bc6f6c | 10734 | |
| ee75fd95 | 10735 | if (htab->relbrlt != NULL) |
| eea6121a | 10736 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
| 84f5d08e AM |
10737 | else if (info->emitrelocations) |
| 10738 | { | |
| 10739 | htab->brlt->reloc_count += 1; | |
| 10740 | htab->brlt->flags |= SEC_RELOC; | |
| 10741 | } | |
| 721956f4 | 10742 | } |
| ad8e1ba5 AM |
10743 | |
| 10744 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
| ac2df442 AM |
10745 | off = (br_entry->offset |
| 10746 | + htab->brlt->output_offset | |
| 10747 | + htab->brlt->output_section->vma | |
| 10748 | - elf_gp (htab->brlt->output_section->owner) | |
| 10749 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 10750 | ||
| 176a0d42 AM |
10751 | if (info->emitrelocations) |
| 10752 | { | |
| 10753 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
| 10754 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 10755 | } | |
| 10756 | ||
| ac2df442 AM |
10757 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 10758 | { | |
| 10759 | size = 12; | |
| 176a0d42 | 10760 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10761 | size = 16; |
| 10762 | } | |
| 10763 | else | |
| 10764 | { | |
| 10765 | size = 20; | |
| 176a0d42 | 10766 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10767 | size += 4; |
| 10768 | ||
| 10769 | if (PPC_HA (r2off) != 0) | |
| 10770 | size += 4; | |
| 10771 | } | |
| 721956f4 | 10772 | } |
| 84f5d08e AM |
10773 | else if (info->emitrelocations) |
| 10774 | { | |
| 10775 | stub_entry->stub_sec->reloc_count += 1; | |
| 10776 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 10777 | } | |
| 721956f4 AM |
10778 | } |
| 10779 | ||
| eea6121a | 10780 | stub_entry->stub_sec->size += size; |
| b34976b6 | 10781 | return TRUE; |
| 721956f4 AM |
10782 | } |
| 10783 | ||
| 10784 | /* Set up various things so that we can make a list of input sections | |
| 10785 | for each output section included in the link. Returns -1 on error, | |
| cedb70c5 | 10786 | 0 when no stubs will be needed, and 1 on success. */ |
| 721956f4 AM |
10787 | |
| 10788 | int | |
| 927be08e AM |
10789 | ppc64_elf_setup_section_lists |
| 10790 | (struct bfd_link_info *info, | |
| 10791 | asection *(*add_stub_section) (const char *, asection *), | |
| 10792 | void (*layout_sections_again) (void)) | |
| 721956f4 AM |
10793 | { |
| 10794 | bfd *input_bfd; | |
| 734b6cf9 | 10795 | int top_id, top_index, id; |
| 721956f4 | 10796 | asection *section; |
| 734b6cf9 | 10797 | asection **input_list; |
| 721956f4 AM |
10798 | bfd_size_type amt; |
| 10799 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 10800 | ||
| 4dfe6ac6 NC |
10801 | if (htab == NULL) |
| 10802 | return -1; | |
| 927be08e AM |
10803 | /* Stash our params away. */ |
| 10804 | htab->add_stub_section = add_stub_section; | |
| 10805 | htab->layout_sections_again = layout_sections_again; | |
| 4c52953f | 10806 | |
| 1e2f5b6e | 10807 | /* Find the top input section id. */ |
| 3d6f9012 | 10808 | for (input_bfd = info->input_bfds, top_id = 3; |
| 721956f4 AM |
10809 | input_bfd != NULL; |
| 10810 | input_bfd = input_bfd->link_next) | |
| 10811 | { | |
| 721956f4 AM |
10812 | for (section = input_bfd->sections; |
| 10813 | section != NULL; | |
| 10814 | section = section->next) | |
| 10815 | { | |
| 10816 | if (top_id < section->id) | |
| 10817 | top_id = section->id; | |
| 10818 | } | |
| 10819 | } | |
| 721956f4 | 10820 | |
| 8f3bab57 | 10821 | htab->top_id = top_id; |
| 721956f4 | 10822 | amt = sizeof (struct map_stub) * (top_id + 1); |
| 4ce794b7 | 10823 | htab->stub_group = bfd_zmalloc (amt); |
| 721956f4 AM |
10824 | if (htab->stub_group == NULL) |
| 10825 | return -1; | |
| 10826 | ||
| 3d6f9012 AM |
10827 | /* Set toc_off for com, und, abs and ind sections. */ |
| 10828 | for (id = 0; id < 3; id++) | |
| 10829 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
| 721956f4 | 10830 | |
| 734b6cf9 AM |
10831 | /* We can't use output_bfd->section_count here to find the top output |
| 10832 | section index as some sections may have been removed, and | |
| 8423293d | 10833 | strip_excluded_output_sections doesn't renumber the indices. */ |
| 927be08e | 10834 | for (section = info->output_bfd->sections, top_index = 0; |
| 734b6cf9 AM |
10835 | section != NULL; |
| 10836 | section = section->next) | |
| 10837 | { | |
| 10838 | if (top_index < section->index) | |
| 10839 | top_index = section->index; | |
| 10840 | } | |
| 10841 | ||
| 10842 | htab->top_index = top_index; | |
| 10843 | amt = sizeof (asection *) * (top_index + 1); | |
| 4ce794b7 | 10844 | input_list = bfd_zmalloc (amt); |
| 734b6cf9 AM |
10845 | htab->input_list = input_list; |
| 10846 | if (input_list == NULL) | |
| 10847 | return -1; | |
| 10848 | ||
| 721956f4 AM |
10849 | return 1; |
| 10850 | } | |
| 10851 | ||
| 927be08e AM |
10852 | /* Set up for first pass at multitoc partitioning. */ |
| 10853 | ||
| 10854 | void | |
| 10855 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
| 10856 | { | |
| 10857 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 10858 | ||
| 1c865ab2 | 10859 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
| 927be08e AM |
10860 | htab->toc_bfd = NULL; |
| 10861 | htab->toc_first_sec = NULL; | |
| 10862 | } | |
| 10863 | ||
| e717da7e AM |
10864 | /* The linker repeatedly calls this function for each TOC input section |
| 10865 | and linker generated GOT section. Group input bfds such that the toc | |
| 927be08e | 10866 | within a group is less than 64k in size. */ |
| ad8e1ba5 | 10867 | |
| 927be08e | 10868 | bfd_boolean |
| 4ce794b7 | 10869 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
| ad8e1ba5 AM |
10870 | { |
| 10871 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| d77c8a4b | 10872 | bfd_vma addr, off, limit; |
| ad8e1ba5 | 10873 | |
| 4dfe6ac6 NC |
10874 | if (htab == NULL) |
| 10875 | return FALSE; | |
| 10876 | ||
| 927be08e | 10877 | if (!htab->second_toc_pass) |
| 4c52953f | 10878 | { |
| 927be08e | 10879 | /* Keep track of the first .toc or .got section for this input bfd. */ |
| a4fd3de5 AM |
10880 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
| 10881 | ||
| 10882 | if (new_bfd) | |
| bf102f86 AM |
10883 | { |
| 10884 | htab->toc_bfd = isec->owner; | |
| 10885 | htab->toc_first_sec = isec; | |
| 10886 | } | |
| 927be08e | 10887 | |
| bf102f86 AM |
10888 | addr = isec->output_offset + isec->output_section->vma; |
| 10889 | off = addr - htab->toc_curr; | |
| d77c8a4b AM |
10890 | limit = 0x80008000; |
| 10891 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
| 10892 | limit = 0x10000; | |
| 10893 | if (off + isec->size > limit) | |
| bf102f86 AM |
10894 | { |
| 10895 | addr = (htab->toc_first_sec->output_offset | |
| 10896 | + htab->toc_first_sec->output_section->vma); | |
| 10897 | htab->toc_curr = addr; | |
| 10898 | } | |
| 99877b66 | 10899 | |
| 927be08e AM |
10900 | /* toc_curr is the base address of this toc group. Set elf_gp |
| 10901 | for the input section to be the offset relative to the | |
| 10902 | output toc base plus 0x8000. Making the input elf_gp an | |
| 10903 | offset allows us to move the toc as a whole without | |
| 10904 | recalculating input elf_gp. */ | |
| 10905 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
| 10906 | off += TOC_BASE_OFF; | |
| 10907 | ||
| 10908 | /* Die if someone uses a linker script that doesn't keep input | |
| 10909 | file .toc and .got together. */ | |
| a4fd3de5 AM |
10910 | if (new_bfd |
| 10911 | && elf_gp (isec->owner) != 0 | |
| 927be08e AM |
10912 | && elf_gp (isec->owner) != off) |
| 10913 | return FALSE; | |
| 10914 | ||
| 10915 | elf_gp (isec->owner) = off; | |
| 10916 | return TRUE; | |
| 4c52953f | 10917 | } |
| 927be08e AM |
10918 | |
| 10919 | /* During the second pass toc_first_sec points to the start of | |
| 10920 | a toc group, and toc_curr is used to track the old elf_gp. | |
| 10921 | We use toc_bfd to ensure we only look at each bfd once. */ | |
| 10922 | if (htab->toc_bfd == isec->owner) | |
| 10923 | return TRUE; | |
| 10924 | htab->toc_bfd = isec->owner; | |
| 10925 | ||
| 10926 | if (htab->toc_first_sec == NULL | |
| 10927 | || htab->toc_curr != elf_gp (isec->owner)) | |
| 10928 | { | |
| 10929 | htab->toc_curr = elf_gp (isec->owner); | |
| 10930 | htab->toc_first_sec = isec; | |
| 10931 | } | |
| 10932 | addr = (htab->toc_first_sec->output_offset | |
| 10933 | + htab->toc_first_sec->output_section->vma); | |
| 10934 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
| 10935 | elf_gp (isec->owner) = off; | |
| 10936 | ||
| 10937 | return TRUE; | |
| ad8e1ba5 AM |
10938 | } |
| 10939 | ||
| 927be08e AM |
10940 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
| 10941 | symbol H. */ | |
| 10942 | ||
| 10943 | static bfd_boolean | |
| 10944 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 10945 | { | |
| 10946 | if (h->root.type == bfd_link_hash_indirect) | |
| 10947 | return TRUE; | |
| 10948 | ||
| 927be08e AM |
10949 | merge_got_entries (&h->got.glist); |
| 10950 | ||
| 10951 | return TRUE; | |
| 10952 | } | |
| 10953 | ||
| 10954 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
| 10955 | symbol H. */ | |
| 10956 | ||
| 10957 | static bfd_boolean | |
| 10958 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
| 10959 | { | |
| 10960 | struct got_entry *gent; | |
| 10961 | ||
| 10962 | if (h->root.type == bfd_link_hash_indirect) | |
| 10963 | return TRUE; | |
| 10964 | ||
| 927be08e AM |
10965 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 10966 | if (!gent->is_indirect) | |
| 10967 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
| 10968 | return TRUE; | |
| 10969 | } | |
| 10970 | ||
| 10971 | /* Called on the first multitoc pass after the last call to | |
| 10972 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
| 10973 | entries. */ | |
| 10974 | ||
| 10975 | bfd_boolean | |
| 10976 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
| ad8e1ba5 AM |
10977 | { |
| 10978 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 927be08e AM |
10979 | struct bfd *ibfd, *ibfd2; |
| 10980 | bfd_boolean done_something; | |
| 10981 | ||
| 10982 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
| ad8e1ba5 | 10983 | |
| 7865406b AM |
10984 | if (!htab->do_multi_toc) |
| 10985 | return FALSE; | |
| 10986 | ||
| d0fae19d | 10987 | /* Merge global sym got entries within a toc group. */ |
| 927be08e AM |
10988 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
| 10989 | ||
| 10990 | /* And tlsld_got. */ | |
| 10991 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 10992 | { | |
| 10993 | struct got_entry *ent, *ent2; | |
| 10994 | ||
| 10995 | if (!is_ppc64_elf (ibfd)) | |
| 10996 | continue; | |
| 10997 | ||
| 10998 | ent = ppc64_tlsld_got (ibfd); | |
| 10999 | if (!ent->is_indirect | |
| 11000 | && ent->got.offset != (bfd_vma) -1) | |
| 11001 | { | |
| 11002 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
| 11003 | { | |
| 11004 | if (!is_ppc64_elf (ibfd2)) | |
| 11005 | continue; | |
| 11006 | ||
| 11007 | ent2 = ppc64_tlsld_got (ibfd2); | |
| 11008 | if (!ent2->is_indirect | |
| 11009 | && ent2->got.offset != (bfd_vma) -1 | |
| 11010 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
| 11011 | { | |
| 11012 | ent2->is_indirect = TRUE; | |
| 11013 | ent2->got.ent = ent; | |
| 11014 | } | |
| 11015 | } | |
| 11016 | } | |
| 11017 | } | |
| 11018 | ||
| 11019 | /* Zap sizes of got sections. */ | |
| 11020 | htab->reliplt->rawsize = htab->reliplt->size; | |
| 11021 | htab->reliplt->size -= htab->got_reli_size; | |
| 11022 | htab->got_reli_size = 0; | |
| 11023 | ||
| 11024 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11025 | { | |
| 11026 | asection *got, *relgot; | |
| 11027 | ||
| 11028 | if (!is_ppc64_elf (ibfd)) | |
| 11029 | continue; | |
| 11030 | ||
| 11031 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11032 | if (got != NULL) | |
| 11033 | { | |
| 11034 | got->rawsize = got->size; | |
| 11035 | got->size = 0; | |
| 11036 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
| 11037 | relgot->rawsize = relgot->size; | |
| 11038 | relgot->size = 0; | |
| 11039 | } | |
| 11040 | } | |
| 11041 | ||
| 11042 | /* Now reallocate the got, local syms first. We don't need to | |
| 11043 | allocate section contents again since we never increase size. */ | |
| 11044 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11045 | { | |
| 11046 | struct got_entry **lgot_ents; | |
| 11047 | struct got_entry **end_lgot_ents; | |
| 11048 | struct plt_entry **local_plt; | |
| 11049 | struct plt_entry **end_local_plt; | |
| f961d9dd | 11050 | unsigned char *lgot_masks; |
| 927be08e AM |
11051 | bfd_size_type locsymcount; |
| 11052 | Elf_Internal_Shdr *symtab_hdr; | |
| 19e08130 | 11053 | asection *s; |
| 927be08e AM |
11054 | |
| 11055 | if (!is_ppc64_elf (ibfd)) | |
| 11056 | continue; | |
| 11057 | ||
| 11058 | lgot_ents = elf_local_got_ents (ibfd); | |
| 11059 | if (!lgot_ents) | |
| 11060 | continue; | |
| 11061 | ||
| 11062 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 11063 | locsymcount = symtab_hdr->sh_info; | |
| 11064 | end_lgot_ents = lgot_ents + locsymcount; | |
| 11065 | local_plt = (struct plt_entry **) end_lgot_ents; | |
| 11066 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 11067 | lgot_masks = (unsigned char *) end_local_plt; |
| 927be08e | 11068 | s = ppc64_elf_tdata (ibfd)->got; |
| 927be08e AM |
11069 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 11070 | { | |
| 11071 | struct got_entry *ent; | |
| 11072 | ||
| 11073 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
| d0fae19d | 11074 | { |
| 19e08130 AM |
11075 | unsigned int ent_size = 8; |
| 11076 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 11077 | ||
| d0fae19d AM |
11078 | ent->got.offset = s->size; |
| 11079 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
| d0fae19d | 11080 | { |
| 19e08130 AM |
11081 | ent_size *= 2; |
| 11082 | rel_size *= 2; | |
| 11083 | } | |
| 11084 | s->size += ent_size; | |
| 11085 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 11086 | { | |
| 11087 | htab->reliplt->size += rel_size; | |
| 11088 | htab->got_reli_size += rel_size; | |
| 11089 | } | |
| 11090 | else if (info->shared) | |
| 11091 | { | |
| 11092 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11093 | srel->size += rel_size; | |
| d0fae19d AM |
11094 | } |
| 11095 | } | |
| 927be08e AM |
11096 | } |
| 11097 | } | |
| 11098 | ||
| 11099 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
| 11100 | ||
| 11101 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11102 | { | |
| 11103 | struct got_entry *ent; | |
| 11104 | ||
| 11105 | if (!is_ppc64_elf (ibfd)) | |
| 11106 | continue; | |
| 11107 | ||
| 11108 | ent = ppc64_tlsld_got (ibfd); | |
| 11109 | if (!ent->is_indirect | |
| 11110 | && ent->got.offset != (bfd_vma) -1) | |
| 11111 | { | |
| 11112 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
| 11113 | ent->got.offset = s->size; | |
| 11114 | s->size += 16; | |
| 11115 | if (info->shared) | |
| 11116 | { | |
| 11117 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11118 | srel->size += sizeof (Elf64_External_Rela); | |
| 11119 | } | |
| 11120 | } | |
| 11121 | } | |
| 11122 | ||
| 11123 | done_something = htab->reliplt->rawsize != htab->reliplt->size; | |
| 11124 | if (!done_something) | |
| 11125 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11126 | { | |
| 11127 | asection *got; | |
| 11128 | ||
| 11129 | if (!is_ppc64_elf (ibfd)) | |
| 11130 | continue; | |
| 11131 | ||
| 11132 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11133 | if (got != NULL) | |
| 11134 | { | |
| 11135 | done_something = got->rawsize != got->size; | |
| 11136 | if (done_something) | |
| 11137 | break; | |
| 11138 | } | |
| 11139 | } | |
| 11140 | ||
| 11141 | if (done_something) | |
| 11142 | (*htab->layout_sections_again) (); | |
| 11143 | ||
| 11144 | /* Set up for second pass over toc sections to recalculate elf_gp | |
| 11145 | on input sections. */ | |
| 11146 | htab->toc_bfd = NULL; | |
| 11147 | htab->toc_first_sec = NULL; | |
| 11148 | htab->second_toc_pass = TRUE; | |
| 11149 | return done_something; | |
| 11150 | } | |
| 11151 | ||
| 11152 | /* Called after second pass of multitoc partitioning. */ | |
| 11153 | ||
| 11154 | void | |
| 11155 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
| 11156 | { | |
| 11157 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11158 | ||
| 11159 | /* After the second pass, toc_curr tracks the TOC offset used | |
| 11160 | for code sections below in ppc64_elf_next_input_section. */ | |
| 3d6f9012 | 11161 | htab->toc_curr = TOC_BASE_OFF; |
| ad8e1ba5 AM |
11162 | } |
| 11163 | ||
| 9b5ecbd0 AM |
11164 | /* No toc references were found in ISEC. If the code in ISEC makes no |
| 11165 | calls, then there's no need to use toc adjusting stubs when branching | |
| 11166 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
| 4c52953f AM |
11167 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
| 11168 | needed, and 2 if a cyclical call-graph was found but no other reason | |
| 11169 | for a stub was detected. If called from the top level, a return of | |
| 11170 | 2 means the same as a return of 0. */ | |
| 9b5ecbd0 AM |
11171 | |
| 11172 | static int | |
| 4ce794b7 | 11173 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
| 9b5ecbd0 | 11174 | { |
| 9b5ecbd0 | 11175 | int ret; |
| 70cc837d AM |
11176 | |
| 11177 | /* Mark this section as checked. */ | |
| 11178 | isec->call_check_done = 1; | |
| 9b5ecbd0 | 11179 | |
| 772119ce AM |
11180 | /* We know none of our code bearing sections will need toc stubs. */ |
| 11181 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
| 11182 | return 0; | |
| 11183 | ||
| eea6121a | 11184 | if (isec->size == 0) |
| 082c50f8 AM |
11185 | return 0; |
| 11186 | ||
| 4c52953f AM |
11187 | if (isec->output_section == NULL) |
| 11188 | return 0; | |
| 11189 | ||
| 4c52953f | 11190 | ret = 0; |
| 70cc837d | 11191 | if (isec->reloc_count != 0) |
| 9b5ecbd0 | 11192 | { |
| 70cc837d AM |
11193 | Elf_Internal_Rela *relstart, *rel; |
| 11194 | Elf_Internal_Sym *local_syms; | |
| 11195 | struct ppc_link_hash_table *htab; | |
| 2917689a | 11196 | |
| 70cc837d AM |
11197 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
| 11198 | info->keep_memory); | |
| 11199 | if (relstart == NULL) | |
| 11200 | return -1; | |
| 90aecf7a | 11201 | |
| 70cc837d AM |
11202 | /* Look for branches to outside of this section. */ |
| 11203 | local_syms = NULL; | |
| 11204 | htab = ppc_hash_table (info); | |
| 11205 | if (htab == NULL) | |
| 11206 | return -1; | |
| 4c52953f | 11207 | |
| 70cc837d | 11208 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
| 4c52953f | 11209 | { |
| 70cc837d AM |
11210 | enum elf_ppc64_reloc_type r_type; |
| 11211 | unsigned long r_symndx; | |
| 11212 | struct elf_link_hash_entry *h; | |
| 11213 | struct ppc_link_hash_entry *eh; | |
| 11214 | Elf_Internal_Sym *sym; | |
| 11215 | asection *sym_sec; | |
| 11216 | struct _opd_sec_data *opd; | |
| 11217 | bfd_vma sym_value; | |
| 11218 | bfd_vma dest; | |
| 11219 | ||
| 11220 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 11221 | if (r_type != R_PPC64_REL24 | |
| 11222 | && r_type != R_PPC64_REL14 | |
| 11223 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 11224 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 11225 | continue; | |
| 4c52953f | 11226 | |
| 70cc837d AM |
11227 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 11228 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
| 11229 | isec->owner)) | |
| 4c52953f | 11230 | { |
| 70cc837d AM |
11231 | ret = -1; |
| 11232 | break; | |
| 11233 | } | |
| 4c52953f | 11234 | |
| 70cc837d AM |
11235 | /* Calls to dynamic lib functions go through a plt call stub |
| 11236 | that uses r2. */ | |
| 11237 | eh = (struct ppc_link_hash_entry *) h; | |
| 11238 | if (eh != NULL | |
| 11239 | && (eh->elf.plt.plist != NULL | |
| 11240 | || (eh->oh != NULL | |
| 11241 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
| 11242 | { | |
| 11243 | ret = 1; | |
| 11244 | break; | |
| 4c52953f AM |
11245 | } |
| 11246 | ||
| 70cc837d AM |
11247 | if (sym_sec == NULL) |
| 11248 | /* Ignore other undefined symbols. */ | |
| 4c52953f | 11249 | continue; |
| 4c52953f | 11250 | |
| 70cc837d AM |
11251 | /* Assume branches to other sections not included in the |
| 11252 | link need stubs too, to cover -R and absolute syms. */ | |
| 11253 | if (sym_sec->output_section == NULL) | |
| 11254 | { | |
| 11255 | ret = 1; | |
| 11256 | break; | |
| 11257 | } | |
| 4c52953f | 11258 | |
| 70cc837d AM |
11259 | if (h == NULL) |
| 11260 | sym_value = sym->st_value; | |
| 11261 | else | |
| 11262 | { | |
| 11263 | if (h->root.type != bfd_link_hash_defined | |
| 11264 | && h->root.type != bfd_link_hash_defweak) | |
| 11265 | abort (); | |
| 11266 | sym_value = h->root.u.def.value; | |
| 11267 | } | |
| 11268 | sym_value += rel->r_addend; | |
| 4c52953f | 11269 | |
| 70cc837d AM |
11270 | /* If this branch reloc uses an opd sym, find the code section. */ |
| 11271 | opd = get_opd_info (sym_sec); | |
| 11272 | if (opd != NULL) | |
| 11273 | { | |
| 11274 | if (h == NULL && opd->adjust != NULL) | |
| 11275 | { | |
| 11276 | long adjust; | |
| 4c52953f | 11277 | |
| 70cc837d AM |
11278 | adjust = opd->adjust[sym->st_value / 8]; |
| 11279 | if (adjust == -1) | |
| 11280 | /* Assume deleted functions won't ever be called. */ | |
| 11281 | continue; | |
| 11282 | sym_value += adjust; | |
| 11283 | } | |
| 4c52953f | 11284 | |
| aef36ac1 AM |
11285 | dest = opd_entry_value (sym_sec, sym_value, |
| 11286 | &sym_sec, NULL, FALSE); | |
| 70cc837d AM |
11287 | if (dest == (bfd_vma) -1) |
| 11288 | continue; | |
| 11289 | } | |
| 11290 | else | |
| 11291 | dest = (sym_value | |
| 11292 | + sym_sec->output_offset | |
| 11293 | + sym_sec->output_section->vma); | |
| 4c52953f | 11294 | |
| 70cc837d AM |
11295 | /* Ignore branch to self. */ |
| 11296 | if (sym_sec == isec) | |
| 11297 | continue; | |
| 4c52953f | 11298 | |
| 70cc837d AM |
11299 | /* If the called function uses the toc, we need a stub. */ |
| 11300 | if (sym_sec->has_toc_reloc | |
| 11301 | || sym_sec->makes_toc_func_call) | |
| 4c52953f | 11302 | { |
| 70cc837d | 11303 | ret = 1; |
| 4c52953f AM |
11304 | break; |
| 11305 | } | |
| 70cc837d AM |
11306 | |
| 11307 | /* Assume any branch that needs a long branch stub might in fact | |
| 11308 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
| 11309 | else if (dest - (isec->output_offset | |
| 11310 | + isec->output_section->vma | |
| 11311 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
| 4c52953f | 11312 | { |
| 70cc837d AM |
11313 | ret = 1; |
| 11314 | break; | |
| 11315 | } | |
| 11316 | ||
| 11317 | /* If calling back to a section in the process of being | |
| 11318 | tested, we can't say for sure that no toc adjusting stubs | |
| 11319 | are needed, so don't return zero. */ | |
| 11320 | else if (sym_sec->call_check_in_progress) | |
| 11321 | ret = 2; | |
| 11322 | ||
| 11323 | /* Branches to another section that itself doesn't have any TOC | |
| 11324 | references are OK. Recursively call ourselves to check. */ | |
| 11325 | else if (!sym_sec->call_check_done) | |
| 11326 | { | |
| 11327 | int recur; | |
| 11328 | ||
| 11329 | /* Mark current section as indeterminate, so that other | |
| 11330 | sections that call back to current won't be marked as | |
| 11331 | known. */ | |
| 11332 | isec->call_check_in_progress = 1; | |
| 11333 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
| 11334 | isec->call_check_in_progress = 0; | |
| 11335 | ||
| 4c52953f AM |
11336 | if (recur != 0) |
| 11337 | { | |
| 70cc837d AM |
11338 | ret = recur; |
| 11339 | if (recur != 2) | |
| 11340 | break; | |
| 4c52953f AM |
11341 | } |
| 11342 | } | |
| 4c52953f | 11343 | } |
| 70cc837d AM |
11344 | |
| 11345 | if (local_syms != NULL | |
| 11346 | && (elf_symtab_hdr (isec->owner).contents | |
| 11347 | != (unsigned char *) local_syms)) | |
| 11348 | free (local_syms); | |
| 11349 | if (elf_section_data (isec)->relocs != relstart) | |
| 11350 | free (relstart); | |
| 9b5ecbd0 AM |
11351 | } |
| 11352 | ||
| 70cc837d AM |
11353 | if ((ret & 1) == 0 |
| 11354 | && isec->map_head.s != NULL | |
| 11355 | && (strcmp (isec->output_section->name, ".init") == 0 | |
| 11356 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
| 11357 | { | |
| 11358 | if (isec->map_head.s->has_toc_reloc | |
| 11359 | || isec->map_head.s->makes_toc_func_call) | |
| 11360 | ret = 1; | |
| 11361 | else if (!isec->map_head.s->call_check_done) | |
| 11362 | { | |
| 11363 | int recur; | |
| 11364 | isec->call_check_in_progress = 1; | |
| 11365 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
| 11366 | isec->call_check_in_progress = 0; | |
| 11367 | if (recur != 0) | |
| 11368 | ret = recur; | |
| 11369 | } | |
| 11370 | } | |
| 11371 | ||
| 11372 | if (ret == 1) | |
| 11373 | isec->makes_toc_func_call = 1; | |
| 4c52953f | 11374 | |
| 9b5ecbd0 AM |
11375 | return ret; |
| 11376 | } | |
| 11377 | ||
| 721956f4 AM |
11378 | /* The linker repeatedly calls this function for each input section, |
| 11379 | in the order that input sections are linked into output sections. | |
| 11380 | Build lists of input sections to determine groupings between which | |
| 11381 | we may insert linker stubs. */ | |
| 11382 | ||
| 9b5ecbd0 | 11383 | bfd_boolean |
| 4ce794b7 | 11384 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
| 721956f4 AM |
11385 | { |
| 11386 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11387 | ||
| 4dfe6ac6 NC |
11388 | if (htab == NULL) |
| 11389 | return FALSE; | |
| 11390 | ||
| 734b6cf9 AM |
11391 | if ((isec->output_section->flags & SEC_CODE) != 0 |
| 11392 | && isec->output_section->index <= htab->top_index) | |
| 721956f4 | 11393 | { |
| 734b6cf9 | 11394 | asection **list = htab->input_list + isec->output_section->index; |
| 3d6f9012 | 11395 | /* Steal the link_sec pointer for our list. */ |
| 721956f4 | 11396 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
| 3d6f9012 AM |
11397 | /* This happens to make the list in reverse order, |
| 11398 | which is what we want. */ | |
| 734b6cf9 AM |
11399 | PREV_SEC (isec) = *list; |
| 11400 | *list = isec; | |
| 721956f4 | 11401 | } |
| ad8e1ba5 | 11402 | |
| 4c52953f | 11403 | if (htab->multi_toc_needed) |
| 9b5ecbd0 | 11404 | { |
| 4c52953f AM |
11405 | /* If a code section has a function that uses the TOC then we need |
| 11406 | to use the right TOC (obviously). Also, make sure that .opd gets | |
| 11407 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
| f94498ff AM |
11408 | can't find their function symbol (shouldn't ever happen now). |
| 11409 | Also specially treat .fixup for the linux kernel. .fixup | |
| 11410 | contains branches, but only back to the function that hit an | |
| 11411 | exception. */ | |
| 11412 | if (isec->has_toc_reloc | |
| 11413 | || (isec->flags & SEC_CODE) == 0 | |
| 11414 | || strcmp (isec->name, ".fixup") == 0) | |
| 4c52953f AM |
11415 | { |
| 11416 | if (elf_gp (isec->owner) != 0) | |
| 11417 | htab->toc_curr = elf_gp (isec->owner); | |
| 11418 | } | |
| 6683a28d AM |
11419 | else |
| 11420 | { | |
| 11421 | if (!isec->call_check_done | |
| 11422 | && toc_adjusting_stub_needed (info, isec) < 0) | |
| 11423 | return FALSE; | |
| 11424 | /* If we make a local call from this section, ie. a branch | |
| 11425 | without a following nop, then we have no place to put a | |
| 11426 | toc restoring insn. We must use the same toc group as | |
| 11427 | the callee. | |
| 11428 | Testing makes_toc_func_call actually tests for *any* | |
| 11429 | calls to functions that need a good toc pointer. A more | |
| 11430 | precise test would be better, as this one will set | |
| 11431 | incorrect values for pasted .init/.fini fragments. | |
| 11432 | (Fixed later in check_pasted_section.) */ | |
| 11433 | if (isec->makes_toc_func_call | |
| 11434 | && elf_gp (isec->owner) != 0) | |
| 11435 | htab->toc_curr = elf_gp (isec->owner); | |
| 11436 | } | |
| 9b5ecbd0 | 11437 | } |
| ad8e1ba5 AM |
11438 | |
| 11439 | /* Functions that don't use the TOC can belong in any TOC group. | |
| 6683a28d | 11440 | Use the last TOC base. */ |
| ad8e1ba5 | 11441 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
| 9b5ecbd0 | 11442 | return TRUE; |
| 721956f4 AM |
11443 | } |
| 11444 | ||
| 70cc837d AM |
11445 | /* Check that all .init and .fini sections use the same toc, if they |
| 11446 | have toc relocs. */ | |
| 11447 | ||
| 11448 | static bfd_boolean | |
| 11449 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
| 11450 | { | |
| 11451 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
| 11452 | ||
| 11453 | if (o != NULL) | |
| 11454 | { | |
| 11455 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11456 | bfd_vma toc_off = 0; | |
| 11457 | asection *i; | |
| 11458 | ||
| 11459 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11460 | if (i->has_toc_reloc) | |
| 11461 | { | |
| 11462 | if (toc_off == 0) | |
| 11463 | toc_off = htab->stub_group[i->id].toc_off; | |
| 11464 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
| 11465 | return FALSE; | |
| 11466 | } | |
| 6683a28d AM |
11467 | |
| 11468 | if (toc_off == 0) | |
| 11469 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11470 | if (i->makes_toc_func_call) | |
| 11471 | { | |
| 11472 | toc_off = htab->stub_group[i->id].toc_off; | |
| 11473 | break; | |
| 11474 | } | |
| 11475 | ||
| 70cc837d AM |
11476 | /* Make sure the whole pasted function uses the same toc offset. */ |
| 11477 | if (toc_off != 0) | |
| 11478 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11479 | htab->stub_group[i->id].toc_off = toc_off; | |
| 11480 | } | |
| 11481 | return TRUE; | |
| 11482 | } | |
| 11483 | ||
| 11484 | bfd_boolean | |
| 11485 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
| 11486 | { | |
| 11487 | return (check_pasted_section (info, ".init") | |
| 11488 | & check_pasted_section (info, ".fini")); | |
| 11489 | } | |
| 11490 | ||
| 721956f4 AM |
11491 | /* See whether we can group stub sections together. Grouping stub |
| 11492 | sections may result in fewer stubs. More importantly, we need to | |
| 11493 | put all .init* and .fini* stubs at the beginning of the .init or | |
| 11494 | .fini output sections respectively, because glibc splits the | |
| 11495 | _init and _fini functions into multiple parts. Putting a stub in | |
| 11496 | the middle of a function is not a good idea. */ | |
| 11497 | ||
| 11498 | static void | |
| 4ce794b7 AM |
11499 | group_sections (struct ppc_link_hash_table *htab, |
| 11500 | bfd_size_type stub_group_size, | |
| 11501 | bfd_boolean stubs_always_before_branch) | |
| 721956f4 | 11502 | { |
| 7c8fe5c4 AM |
11503 | asection **list; |
| 11504 | bfd_size_type stub14_group_size; | |
| 11505 | bfd_boolean suppress_size_errors; | |
| 11506 | ||
| 11507 | suppress_size_errors = FALSE; | |
| 11508 | stub14_group_size = stub_group_size; | |
| 11509 | if (stub_group_size == 1) | |
| 11510 | { | |
| 11511 | /* Default values. */ | |
| 11512 | if (stubs_always_before_branch) | |
| 11513 | { | |
| 11514 | stub_group_size = 0x1e00000; | |
| 11515 | stub14_group_size = 0x7800; | |
| 11516 | } | |
| 11517 | else | |
| 11518 | { | |
| 11519 | stub_group_size = 0x1c00000; | |
| 11520 | stub14_group_size = 0x7000; | |
| 11521 | } | |
| 11522 | suppress_size_errors = TRUE; | |
| 11523 | } | |
| 11524 | ||
| 11525 | list = htab->input_list + htab->top_index; | |
| 734b6cf9 | 11526 | do |
| 721956f4 | 11527 | { |
| 734b6cf9 AM |
11528 | asection *tail = *list; |
| 11529 | while (tail != NULL) | |
| 721956f4 | 11530 | { |
| 734b6cf9 AM |
11531 | asection *curr; |
| 11532 | asection *prev; | |
| 11533 | bfd_size_type total; | |
| 11534 | bfd_boolean big_sec; | |
| 11535 | bfd_vma curr_toc; | |
| 11536 | ||
| 11537 | curr = tail; | |
| eea6121a | 11538 | total = tail->size; |
| 6bee8834 AM |
11539 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
| 11540 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
| 7c8fe5c4 AM |
11541 | ? stub14_group_size : stub_group_size); |
| 11542 | if (big_sec && !suppress_size_errors) | |
| 5c3dead3 AM |
11543 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
| 11544 | tail->owner, tail); | |
| 734b6cf9 AM |
11545 | curr_toc = htab->stub_group[tail->id].toc_off; |
| 11546 | ||
| 11547 | while ((prev = PREV_SEC (curr)) != NULL | |
| 11548 | && ((total += curr->output_offset - prev->output_offset) | |
| 6bee8834 AM |
11549 | < (ppc64_elf_section_data (prev) != NULL |
| 11550 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 7c8fe5c4 | 11551 | ? stub14_group_size : stub_group_size)) |
| ad8e1ba5 | 11552 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
11553 | curr = prev; |
| 11554 | ||
| 11555 | /* OK, the size from the start of CURR to the end is less | |
| 11556 | than stub_group_size and thus can be handled by one stub | |
| 11557 | section. (or the tail section is itself larger than | |
| 11558 | stub_group_size, in which case we may be toast.) We | |
| 11559 | should really be keeping track of the total size of stubs | |
| 11560 | added here, as stubs contribute to the final output | |
| 11561 | section size. That's a little tricky, and this way will | |
| 11562 | only break if stubs added make the total size more than | |
| 11563 | 2^25, ie. for the default stub_group_size, if stubs total | |
| 11564 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
| 11565 | do | |
| 721956f4 AM |
11566 | { |
| 11567 | prev = PREV_SEC (tail); | |
| 734b6cf9 | 11568 | /* Set up this stub group. */ |
| 721956f4 AM |
11569 | htab->stub_group[tail->id].link_sec = curr; |
| 11570 | } | |
| 734b6cf9 AM |
11571 | while (tail != curr && (tail = prev) != NULL); |
| 11572 | ||
| 11573 | /* But wait, there's more! Input sections up to stub_group_size | |
| 11574 | bytes before the stub section can be handled by it too. | |
| 11575 | Don't do this if we have a really large section after the | |
| 11576 | stubs, as adding more stubs increases the chance that | |
| 11577 | branches may not reach into the stub section. */ | |
| 11578 | if (!stubs_always_before_branch && !big_sec) | |
| 11579 | { | |
| 11580 | total = 0; | |
| 11581 | while (prev != NULL | |
| 11582 | && ((total += tail->output_offset - prev->output_offset) | |
| 6bee8834 AM |
11583 | < (ppc64_elf_section_data (prev) != NULL |
| 11584 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 7c8fe5c4 | 11585 | ? stub14_group_size : stub_group_size)) |
| 734b6cf9 AM |
11586 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 11587 | { | |
| 11588 | tail = prev; | |
| 11589 | prev = PREV_SEC (tail); | |
| 11590 | htab->stub_group[tail->id].link_sec = curr; | |
| 11591 | } | |
| 11592 | } | |
| 11593 | tail = prev; | |
| 721956f4 AM |
11594 | } |
| 11595 | } | |
| 734b6cf9 AM |
11596 | while (list-- != htab->input_list); |
| 11597 | free (htab->input_list); | |
| 721956f4 AM |
11598 | #undef PREV_SEC |
| 11599 | } | |
| 11600 | ||
| 58d180e8 AM |
11601 | static const unsigned char glink_eh_frame_cie[] = |
| 11602 | { | |
| 11603 | 0, 0, 0, 16, /* length. */ | |
| 11604 | 0, 0, 0, 0, /* id. */ | |
| 11605 | 1, /* CIE version. */ | |
| 11606 | 'z', 'R', 0, /* Augmentation string. */ | |
| 11607 | 4, /* Code alignment. */ | |
| 11608 | 0x78, /* Data alignment. */ | |
| 11609 | 65, /* RA reg. */ | |
| 11610 | 1, /* Augmentation size. */ | |
| 11611 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
| 11612 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
| 11613 | }; | |
| 11614 | ||
| d969d15f AM |
11615 | /* Stripping output sections is normally done before dynamic section |
| 11616 | symbols have been allocated. This function is called later, and | |
| 11617 | handles cases like htab->brlt which is mapped to its own output | |
| 11618 | section. */ | |
| 11619 | ||
| 11620 | static void | |
| 11621 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
| 11622 | { | |
| 11623 | if (isec->size == 0 | |
| 11624 | && isec->output_section->size == 0 | |
| 53d8967a | 11625 | && !(isec->output_section->flags & SEC_KEEP) |
| d969d15f AM |
11626 | && !bfd_section_removed_from_list (info->output_bfd, |
| 11627 | isec->output_section) | |
| 11628 | && elf_section_data (isec->output_section)->dynindx == 0) | |
| 11629 | { | |
| 11630 | isec->output_section->flags |= SEC_EXCLUDE; | |
| 11631 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
| 11632 | info->output_bfd->section_count--; | |
| 11633 | } | |
| 11634 | } | |
| 11635 | ||
| 721956f4 AM |
11636 | /* Determine and set the size of the stub section for a final link. |
| 11637 | ||
| 11638 | The basic idea here is to examine all the relocations looking for | |
| 11639 | PC-relative calls to a target that is unreachable with a "bl" | |
| 11640 | instruction. */ | |
| 11641 | ||
| b34976b6 | 11642 | bfd_boolean |
| 9df0ef5f | 11643 | ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size, |
| 794e51c0 AM |
11644 | bfd_boolean plt_static_chain, int plt_thread_safe, |
| 11645 | int plt_stub_align) | |
| 721956f4 AM |
11646 | { |
| 11647 | bfd_size_type stub_group_size; | |
| b34976b6 | 11648 | bfd_boolean stubs_always_before_branch; |
| 721956f4 AM |
11649 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 11650 | ||
| 4dfe6ac6 NC |
11651 | if (htab == NULL) |
| 11652 | return FALSE; | |
| 11653 | ||
| 9df0ef5f | 11654 | htab->plt_static_chain = plt_static_chain; |
| 794e51c0 | 11655 | htab->plt_stub_align = plt_stub_align; |
| e2458743 AM |
11656 | if (plt_thread_safe == -1 && !info->executable) |
| 11657 | plt_thread_safe = 1; | |
| 794e51c0 AM |
11658 | if (plt_thread_safe == -1) |
| 11659 | { | |
| e2458743 | 11660 | static const char *const thread_starter[] = |
| 794e51c0 AM |
11661 | { |
| 11662 | "pthread_create", | |
| 11663 | /* libstdc++ */ | |
| 11664 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
| 11665 | /* librt */ | |
| 11666 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
| 11667 | "mq_notify", "create_timer", | |
| 11668 | /* libanl */ | |
| 11669 | "getaddrinfo_a", | |
| 11670 | /* libgomp */ | |
| 11671 | "GOMP_parallel_start", | |
| 11672 | "GOMP_parallel_loop_static_start", | |
| 11673 | "GOMP_parallel_loop_dynamic_start", | |
| 11674 | "GOMP_parallel_loop_guided_start", | |
| 11675 | "GOMP_parallel_loop_runtime_start", | |
| 68ffbac6 | 11676 | "GOMP_parallel_sections_start", |
| 794e51c0 AM |
11677 | }; |
| 11678 | unsigned i; | |
| 11679 | ||
| 11680 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
| 11681 | { | |
| 11682 | struct elf_link_hash_entry *h; | |
| 11683 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
| 11684 | FALSE, FALSE, TRUE); | |
| 11685 | plt_thread_safe = h != NULL && h->ref_regular; | |
| 11686 | if (plt_thread_safe) | |
| 11687 | break; | |
| 11688 | } | |
| 11689 | } | |
| 11690 | htab->plt_thread_safe = plt_thread_safe; | |
| 721956f4 AM |
11691 | stubs_always_before_branch = group_size < 0; |
| 11692 | if (group_size < 0) | |
| 11693 | stub_group_size = -group_size; | |
| 11694 | else | |
| 11695 | stub_group_size = group_size; | |
| 721956f4 AM |
11696 | |
| 11697 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
| 11698 | ||
| 721956f4 AM |
11699 | while (1) |
| 11700 | { | |
| 11701 | bfd *input_bfd; | |
| 11702 | unsigned int bfd_indx; | |
| 11703 | asection *stub_sec; | |
| 721956f4 AM |
11704 | |
| 11705 | htab->stub_iteration += 1; | |
| 721956f4 AM |
11706 | |
| 11707 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
| 11708 | input_bfd != NULL; | |
| 11709 | input_bfd = input_bfd->link_next, bfd_indx++) | |
| 11710 | { | |
| 11711 | Elf_Internal_Shdr *symtab_hdr; | |
| 11712 | asection *section; | |
| 6cdc0ccc | 11713 | Elf_Internal_Sym *local_syms = NULL; |
| 721956f4 | 11714 | |
| 0c8d6e5c | 11715 | if (!is_ppc64_elf (input_bfd)) |
| 67f93c31 AM |
11716 | continue; |
| 11717 | ||
| 721956f4 | 11718 | /* We'll need the symbol table in a second. */ |
| 0ffa91dd | 11719 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 721956f4 AM |
11720 | if (symtab_hdr->sh_info == 0) |
| 11721 | continue; | |
| 11722 | ||
| 721956f4 AM |
11723 | /* Walk over each section attached to the input bfd. */ |
| 11724 | for (section = input_bfd->sections; | |
| 11725 | section != NULL; | |
| 11726 | section = section->next) | |
| 11727 | { | |
| 721956f4 | 11728 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 721956f4 AM |
11729 | |
| 11730 | /* If there aren't any relocs, then there's nothing more | |
| 11731 | to do. */ | |
| 11732 | if ((section->flags & SEC_RELOC) == 0 | |
| 12c0f757 AM |
11733 | || (section->flags & SEC_ALLOC) == 0 |
| 11734 | || (section->flags & SEC_LOAD) == 0 | |
| 11735 | || (section->flags & SEC_CODE) == 0 | |
| 721956f4 AM |
11736 | || section->reloc_count == 0) |
| 11737 | continue; | |
| 11738 | ||
| 11739 | /* If this section is a link-once section that will be | |
| 11740 | discarded, then don't create any stubs. */ | |
| 11741 | if (section->output_section == NULL | |
| 927be08e | 11742 | || section->output_section->owner != info->output_bfd) |
| 721956f4 AM |
11743 | continue; |
| 11744 | ||
| 1e2f5b6e AM |
11745 | /* Get the relocs. */ |
| 11746 | internal_relocs | |
| 4ce794b7 | 11747 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
| 45d6a902 | 11748 | info->keep_memory); |
| 721956f4 | 11749 | if (internal_relocs == NULL) |
| 1e2f5b6e | 11750 | goto error_ret_free_local; |
| 721956f4 AM |
11751 | |
| 11752 | /* Now examine each relocation. */ | |
| 11753 | irela = internal_relocs; | |
| 11754 | irelaend = irela + section->reloc_count; | |
| 11755 | for (; irela < irelaend; irela++) | |
| 11756 | { | |
| 4ce794b7 AM |
11757 | enum elf_ppc64_reloc_type r_type; |
| 11758 | unsigned int r_indx; | |
| 721956f4 AM |
11759 | enum ppc_stub_type stub_type; |
| 11760 | struct ppc_stub_hash_entry *stub_entry; | |
| 8387904d | 11761 | asection *sym_sec, *code_sec; |
| e054468f | 11762 | bfd_vma sym_value, code_value; |
| 721956f4 | 11763 | bfd_vma destination; |
| 8843416a | 11764 | bfd_boolean ok_dest; |
| 721956f4 | 11765 | struct ppc_link_hash_entry *hash; |
| 8387904d | 11766 | struct ppc_link_hash_entry *fdh; |
| 411e1bfb AM |
11767 | struct elf_link_hash_entry *h; |
| 11768 | Elf_Internal_Sym *sym; | |
| 721956f4 AM |
11769 | char *stub_name; |
| 11770 | const asection *id_sec; | |
| 74f0fb50 | 11771 | struct _opd_sec_data *opd; |
| e054468f | 11772 | struct plt_entry *plt_ent; |
| 721956f4 AM |
11773 | |
| 11774 | r_type = ELF64_R_TYPE (irela->r_info); | |
| 11775 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 11776 | ||
| 4ce794b7 | 11777 | if (r_type >= R_PPC64_max) |
| 721956f4 AM |
11778 | { |
| 11779 | bfd_set_error (bfd_error_bad_value); | |
| 6cdc0ccc | 11780 | goto error_ret_free_internal; |
| 721956f4 AM |
11781 | } |
| 11782 | ||
| 11783 | /* Only look for stubs on branch instructions. */ | |
| 4ce794b7 AM |
11784 | if (r_type != R_PPC64_REL24 |
| 11785 | && r_type != R_PPC64_REL14 | |
| 11786 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 11787 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 721956f4 AM |
11788 | continue; |
| 11789 | ||
| 11790 | /* Now determine the call target, its name, value, | |
| 11791 | section. */ | |
| 411e1bfb AM |
11792 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 11793 | r_indx, input_bfd)) | |
| 11794 | goto error_ret_free_internal; | |
| 11795 | hash = (struct ppc_link_hash_entry *) h; | |
| 11796 | ||
| 8843416a | 11797 | ok_dest = FALSE; |
| 8387904d | 11798 | fdh = NULL; |
| 7fe2b9a6 | 11799 | sym_value = 0; |
| 411e1bfb | 11800 | if (hash == NULL) |
| 721956f4 | 11801 | { |
| 411e1bfb | 11802 | sym_value = sym->st_value; |
| 8843416a | 11803 | ok_dest = TRUE; |
| 721956f4 | 11804 | } |
| 7fe2b9a6 AM |
11805 | else if (hash->elf.root.type == bfd_link_hash_defined |
| 11806 | || hash->elf.root.type == bfd_link_hash_defweak) | |
| 11807 | { | |
| 11808 | sym_value = hash->elf.root.u.def.value; | |
| 11809 | if (sym_sec->output_section != NULL) | |
| 11810 | ok_dest = TRUE; | |
| 11811 | } | |
| 11812 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
| 11813 | || hash->elf.root.type == bfd_link_hash_undefined) | |
| 721956f4 | 11814 | { |
| 99877b66 | 11815 | /* Recognise an old ABI func code entry sym, and |
| 7fe2b9a6 AM |
11816 | use the func descriptor sym instead if it is |
| 11817 | defined. */ | |
| ceb1f1ef | 11818 | if (hash->elf.root.root.string[0] == '.' |
| b31867b6 | 11819 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
| 8387904d | 11820 | { |
| 8387904d AM |
11821 | if (fdh->elf.root.type == bfd_link_hash_defined |
| 11822 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 11823 | { | |
| 11824 | sym_sec = fdh->elf.root.u.def.section; | |
| 11825 | sym_value = fdh->elf.root.u.def.value; | |
| 11826 | if (sym_sec->output_section != NULL) | |
| 11827 | ok_dest = TRUE; | |
| 11828 | } | |
| 99877b66 AM |
11829 | else |
| 11830 | fdh = NULL; | |
| 8387904d | 11831 | } |
| 7fe2b9a6 AM |
11832 | } |
| 11833 | else | |
| 11834 | { | |
| 11835 | bfd_set_error (bfd_error_bad_value); | |
| 11836 | goto error_ret_free_internal; | |
| 721956f4 AM |
11837 | } |
| 11838 | ||
| 8843416a AM |
11839 | destination = 0; |
| 11840 | if (ok_dest) | |
| 11841 | { | |
| 11842 | sym_value += irela->r_addend; | |
| 11843 | destination = (sym_value | |
| 11844 | + sym_sec->output_offset | |
| 11845 | + sym_sec->output_section->vma); | |
| 11846 | } | |
| 11847 | ||
| 8387904d | 11848 | code_sec = sym_sec; |
| e054468f | 11849 | code_value = sym_value; |
| 74f0fb50 AM |
11850 | opd = get_opd_info (sym_sec); |
| 11851 | if (opd != NULL) | |
| 8387904d AM |
11852 | { |
| 11853 | bfd_vma dest; | |
| 11854 | ||
| 74f0fb50 | 11855 | if (hash == NULL && opd->adjust != NULL) |
| 8387904d | 11856 | { |
| 74f0fb50 | 11857 | long adjust = opd->adjust[sym_value / 8]; |
| 8387904d AM |
11858 | if (adjust == -1) |
| 11859 | continue; | |
| e054468f | 11860 | code_value += adjust; |
| 8387904d AM |
11861 | sym_value += adjust; |
| 11862 | } | |
| 11863 | dest = opd_entry_value (sym_sec, sym_value, | |
| aef36ac1 | 11864 | &code_sec, &code_value, FALSE); |
| 8387904d AM |
11865 | if (dest != (bfd_vma) -1) |
| 11866 | { | |
| 11867 | destination = dest; | |
| 11868 | if (fdh != NULL) | |
| 11869 | { | |
| 11870 | /* Fixup old ABI sym to point at code | |
| 11871 | entry. */ | |
| 99877b66 | 11872 | hash->elf.root.type = bfd_link_hash_defweak; |
| 8387904d | 11873 | hash->elf.root.u.def.section = code_sec; |
| e054468f | 11874 | hash->elf.root.u.def.value = code_value; |
| 8387904d AM |
11875 | } |
| 11876 | } | |
| 11877 | } | |
| 11878 | ||
| 721956f4 | 11879 | /* Determine what (if any) linker stub is needed. */ |
| e054468f | 11880 | plt_ent = NULL; |
| 721956f4 | 11881 | stub_type = ppc_type_of_stub (section, irela, &hash, |
| e054468f | 11882 | &plt_ent, destination); |
| ad8e1ba5 AM |
11883 | |
| 11884 | if (stub_type != ppc_stub_plt_call) | |
| 11885 | { | |
| 11886 | /* Check whether we need a TOC adjusting stub. | |
| 11887 | Since the linker pastes together pieces from | |
| 11888 | different object files when creating the | |
| 11889 | _init and _fini functions, it may be that a | |
| 11890 | call to what looks like a local sym is in | |
| 11891 | fact a call needing a TOC adjustment. */ | |
| 8387904d AM |
11892 | if (code_sec != NULL |
| 11893 | && code_sec->output_section != NULL | |
| 11894 | && (htab->stub_group[code_sec->id].toc_off | |
| 9b5ecbd0 | 11895 | != htab->stub_group[section->id].toc_off) |
| 4c52953f AM |
11896 | && (code_sec->has_toc_reloc |
| 11897 | || code_sec->makes_toc_func_call)) | |
| ad8e1ba5 AM |
11898 | stub_type = ppc_stub_long_branch_r2off; |
| 11899 | } | |
| 11900 | ||
| 721956f4 AM |
11901 | if (stub_type == ppc_stub_none) |
| 11902 | continue; | |
| 11903 | ||
| 411e1bfb AM |
11904 | /* __tls_get_addr calls might be eliminated. */ |
| 11905 | if (stub_type != ppc_stub_plt_call | |
| 11906 | && hash != NULL | |
| 8387904d AM |
11907 | && (hash == htab->tls_get_addr |
| 11908 | || hash == htab->tls_get_addr_fd) | |
| 411e1bfb AM |
11909 | && section->has_tls_reloc |
| 11910 | && irela != internal_relocs) | |
| 11911 | { | |
| 11912 | /* Get tls info. */ | |
| f961d9dd | 11913 | unsigned char *tls_mask; |
| 411e1bfb | 11914 | |
| 3a71aa26 | 11915 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
| 411e1bfb AM |
11916 | irela - 1, input_bfd)) |
| 11917 | goto error_ret_free_internal; | |
| e7b938ca | 11918 | if (*tls_mask != 0) |
| 411e1bfb AM |
11919 | continue; |
| 11920 | } | |
| 11921 | ||
| 3b421ab3 AM |
11922 | if (stub_type == ppc_stub_plt_call |
| 11923 | && irela + 1 < irelaend | |
| 11924 | && irela[1].r_offset == irela->r_offset + 4 | |
| 794e51c0 AM |
11925 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
| 11926 | { | |
| 11927 | if (!tocsave_find (htab, INSERT, | |
| 11928 | &local_syms, irela + 1, input_bfd)) | |
| 11929 | goto error_ret_free_internal; | |
| 11930 | } | |
| 11931 | else if (stub_type == ppc_stub_plt_call) | |
| 11932 | stub_type = ppc_stub_plt_call_r2save; | |
| 3b421ab3 | 11933 | |
| 721956f4 AM |
11934 | /* Support for grouping stub sections. */ |
| 11935 | id_sec = htab->stub_group[section->id].link_sec; | |
| 11936 | ||
| 11937 | /* Get the name of this stub. */ | |
| 11938 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
| 11939 | if (!stub_name) | |
| 11940 | goto error_ret_free_internal; | |
| 11941 | ||
| 11942 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 11943 | stub_name, FALSE, FALSE); |
| 721956f4 AM |
11944 | if (stub_entry != NULL) |
| 11945 | { | |
| 11946 | /* The proper stub has already been created. */ | |
| 11947 | free (stub_name); | |
| 794e51c0 AM |
11948 | if (stub_type == ppc_stub_plt_call_r2save) |
| 11949 | stub_entry->stub_type = stub_type; | |
| 721956f4 AM |
11950 | continue; |
| 11951 | } | |
| 11952 | ||
| 25f53a85 | 11953 | stub_entry = ppc_add_stub (stub_name, section, info); |
| 721956f4 AM |
11954 | if (stub_entry == NULL) |
| 11955 | { | |
| 11956 | free (stub_name); | |
| 6cdc0ccc AM |
11957 | error_ret_free_internal: |
| 11958 | if (elf_section_data (section)->relocs == NULL) | |
| 11959 | free (internal_relocs); | |
| 11960 | error_ret_free_local: | |
| 11961 | if (local_syms != NULL | |
| 11962 | && (symtab_hdr->contents | |
| 11963 | != (unsigned char *) local_syms)) | |
| 11964 | free (local_syms); | |
| b34976b6 | 11965 | return FALSE; |
| 721956f4 AM |
11966 | } |
| 11967 | ||
| ad8e1ba5 | 11968 | stub_entry->stub_type = stub_type; |
| 794e51c0 AM |
11969 | if (stub_type != ppc_stub_plt_call |
| 11970 | && stub_type != ppc_stub_plt_call_r2save) | |
| e054468f AM |
11971 | { |
| 11972 | stub_entry->target_value = code_value; | |
| 11973 | stub_entry->target_section = code_sec; | |
| 11974 | } | |
| 11975 | else | |
| 11976 | { | |
| 11977 | stub_entry->target_value = sym_value; | |
| 11978 | stub_entry->target_section = sym_sec; | |
| 11979 | } | |
| 721956f4 | 11980 | stub_entry->h = hash; |
| e054468f | 11981 | stub_entry->plt_ent = plt_ent; |
| ee75fd95 AM |
11982 | |
| 11983 | if (stub_entry->h != NULL) | |
| 11984 | htab->stub_globals += 1; | |
| 721956f4 AM |
11985 | } |
| 11986 | ||
| 11987 | /* We're done with the internal relocs, free them. */ | |
| 6cdc0ccc | 11988 | if (elf_section_data (section)->relocs != internal_relocs) |
| 1e2f5b6e | 11989 | free (internal_relocs); |
| 721956f4 | 11990 | } |
| 6cdc0ccc AM |
11991 | |
| 11992 | if (local_syms != NULL | |
| 11993 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 11994 | { | |
| 11995 | if (!info->keep_memory) | |
| 11996 | free (local_syms); | |
| 11997 | else | |
| 11998 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 11999 | } | |
| 721956f4 AM |
12000 | } |
| 12001 | ||
| 5c3dead3 | 12002 | /* We may have added some stubs. Find out the new size of the |
| 721956f4 AM |
12003 | stub sections. */ |
| 12004 | for (stub_sec = htab->stub_bfd->sections; | |
| 12005 | stub_sec != NULL; | |
| 12006 | stub_sec = stub_sec->next) | |
| e717da7e | 12007 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| ee75fd95 | 12008 | { |
| 5c3dead3 | 12009 | stub_sec->rawsize = stub_sec->size; |
| ee75fd95 AM |
12010 | stub_sec->size = 0; |
| 12011 | stub_sec->reloc_count = 0; | |
| 84f5d08e | 12012 | stub_sec->flags &= ~SEC_RELOC; |
| ee75fd95 | 12013 | } |
| eea6121a AM |
12014 | |
| 12015 | htab->brlt->size = 0; | |
| 84f5d08e AM |
12016 | htab->brlt->reloc_count = 0; |
| 12017 | htab->brlt->flags &= ~SEC_RELOC; | |
| ee75fd95 | 12018 | if (htab->relbrlt != NULL) |
| eea6121a | 12019 | htab->relbrlt->size = 0; |
| 721956f4 | 12020 | |
| 63bc6f6c | 12021 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
| 721956f4 | 12022 | |
| 176a0d42 AM |
12023 | if (info->emitrelocations |
| 12024 | && htab->glink != NULL && htab->glink->size != 0) | |
| 12025 | { | |
| 12026 | htab->glink->reloc_count = 1; | |
| 12027 | htab->glink->flags |= SEC_RELOC; | |
| 12028 | } | |
| 12029 | ||
| 58d180e8 AM |
12030 | if (htab->glink_eh_frame != NULL |
| 12031 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
| 9a2a56cc | 12032 | && htab->glink_eh_frame->output_section->size != 0) |
| 58d180e8 | 12033 | { |
| 4bbe044a | 12034 | size_t size = 0, align; |
| 58d180e8 AM |
12035 | |
| 12036 | for (stub_sec = htab->stub_bfd->sections; | |
| 12037 | stub_sec != NULL; | |
| 12038 | stub_sec = stub_sec->next) | |
| 12039 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12040 | size += 20; | |
| 12041 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 12042 | size += 24; | |
| 12043 | if (size != 0) | |
| 12044 | size += sizeof (glink_eh_frame_cie); | |
| 4bbe044a AM |
12045 | align = 1; |
| 12046 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
| 12047 | align -= 1; | |
| 12048 | size = (size + align) & ~align; | |
| 58d180e8 AM |
12049 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
| 12050 | htab->glink_eh_frame->size = size; | |
| 12051 | } | |
| 12052 | ||
| 794e51c0 AM |
12053 | if (htab->plt_stub_align != 0) |
| 12054 | for (stub_sec = htab->stub_bfd->sections; | |
| 12055 | stub_sec != NULL; | |
| 12056 | stub_sec = stub_sec->next) | |
| 12057 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12058 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
| 12059 | & (-1 << htab->plt_stub_align)); | |
| 12060 | ||
| 5c3dead3 AM |
12061 | for (stub_sec = htab->stub_bfd->sections; |
| 12062 | stub_sec != NULL; | |
| 12063 | stub_sec = stub_sec->next) | |
| 12064 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
| 12065 | && stub_sec->rawsize != stub_sec->size) | |
| 12066 | break; | |
| 12067 | ||
| 12068 | /* Exit from this loop when no stubs have been added, and no stubs | |
| 12069 | have changed size. */ | |
| 58d180e8 AM |
12070 | if (stub_sec == NULL |
| 12071 | && (htab->glink_eh_frame == NULL | |
| 12072 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
| 5c3dead3 AM |
12073 | break; |
| 12074 | ||
| 721956f4 AM |
12075 | /* Ask the linker to do its stuff. */ |
| 12076 | (*htab->layout_sections_again) (); | |
| 12077 | } | |
| 12078 | ||
| d969d15f AM |
12079 | maybe_strip_output (info, htab->brlt); |
| 12080 | if (htab->glink_eh_frame != NULL) | |
| 12081 | maybe_strip_output (info, htab->glink_eh_frame); | |
| 721956f4 | 12082 | |
| b34976b6 | 12083 | return TRUE; |
| 721956f4 AM |
12084 | } |
| 12085 | ||
| 12086 | /* Called after we have determined section placement. If sections | |
| 805fc799 | 12087 | move, we'll be called again. Provide a value for TOCstart. */ |
| 721956f4 | 12088 | |
| 805fc799 | 12089 | bfd_vma |
| 1c865ab2 | 12090 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
| 721956f4 | 12091 | { |
| 805fc799 AM |
12092 | asection *s; |
| 12093 | bfd_vma TOCstart; | |
| 721956f4 | 12094 | |
| 805fc799 AM |
12095 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
| 12096 | order. The TOC starts where the first of these sections starts. */ | |
| 12097 | s = bfd_get_section_by_name (obfd, ".got"); | |
| e054468f | 12098 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12099 | s = bfd_get_section_by_name (obfd, ".toc"); |
| e054468f | 12100 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12101 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
| e054468f | 12102 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12103 | s = bfd_get_section_by_name (obfd, ".plt"); |
| e054468f | 12104 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 AM |
12105 | { |
| 12106 | /* This may happen for | |
| 12107 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
| 12108 | .toc directive | |
| 12109 | o bad linker script | |
| 12110 | o --gc-sections and empty TOC sections | |
| 12111 | ||
| 12112 | FIXME: Warn user? */ | |
| 12113 | ||
| 12114 | /* Look for a likely section. We probably won't even be | |
| 12115 | using TOCstart. */ | |
| 12116 | for (s = obfd->sections; s != NULL; s = s->next) | |
| e054468f AM |
12117 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
| 12118 | | SEC_EXCLUDE)) | |
| 805fc799 AM |
12119 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12120 | break; | |
| 721956f4 | 12121 | if (s == NULL) |
| 805fc799 | 12122 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12123 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
| 805fc799 AM |
12124 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12125 | break; | |
| 721956f4 | 12126 | if (s == NULL) |
| 805fc799 | 12127 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f AM |
12128 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
| 12129 | == SEC_ALLOC) | |
| 805fc799 | 12130 | break; |
| 721956f4 | 12131 | if (s == NULL) |
| 805fc799 | 12132 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12133 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
| 805fc799 AM |
12134 | break; |
| 12135 | } | |
| 721956f4 | 12136 | |
| 805fc799 AM |
12137 | TOCstart = 0; |
| 12138 | if (s != NULL) | |
| 12139 | TOCstart = s->output_section->vma + s->output_offset; | |
| 721956f4 | 12140 | |
| 1c865ab2 AM |
12141 | _bfd_set_gp_value (obfd, TOCstart); |
| 12142 | ||
| 12143 | if (info != NULL && s != NULL && is_ppc64_elf (obfd)) | |
| 12144 | { | |
| 12145 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 12146 | ||
| 12147 | if (htab != NULL | |
| 12148 | && htab->elf.hgot != NULL) | |
| 12149 | { | |
| 5295321c | 12150 | htab->elf.hgot->type = STT_OBJECT; |
| 1c865ab2 AM |
12151 | htab->elf.hgot->root.type = bfd_link_hash_defined; |
| 12152 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; | |
| 12153 | htab->elf.hgot->root.u.def.section = s; | |
| 12154 | } | |
| 12155 | } | |
| 805fc799 | 12156 | return TOCstart; |
| 721956f4 AM |
12157 | } |
| 12158 | ||
| 12159 | /* Build all the stubs associated with the current output file. | |
| 12160 | The stubs are kept in a hash table attached to the main linker | |
| 12161 | hash table. This function is called via gldelf64ppc_finish. */ | |
| 12162 | ||
| b34976b6 | 12163 | bfd_boolean |
| 4ce794b7 AM |
12164 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
| 12165 | struct bfd_link_info *info, | |
| 12166 | char **stats) | |
| 5d1634d7 AM |
12167 | { |
| 12168 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 721956f4 | 12169 | asection *stub_sec; |
| 5d1634d7 | 12170 | bfd_byte *p; |
| e717da7e | 12171 | int stub_sec_count = 0; |
| 5d1634d7 | 12172 | |
| 4dfe6ac6 NC |
12173 | if (htab == NULL) |
| 12174 | return FALSE; | |
| 12175 | ||
| ad8e1ba5 | 12176 | htab->emit_stub_syms = emit_stub_syms; |
| eea6121a AM |
12177 | |
| 12178 | /* Allocate memory to hold the linker stubs. */ | |
| 721956f4 AM |
12179 | for (stub_sec = htab->stub_bfd->sections; |
| 12180 | stub_sec != NULL; | |
| 12181 | stub_sec = stub_sec->next) | |
| eea6121a AM |
12182 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
| 12183 | && stub_sec->size != 0) | |
| e717da7e | 12184 | { |
| eea6121a AM |
12185 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
| 12186 | if (stub_sec->contents == NULL) | |
| 12187 | return FALSE; | |
| 12188 | /* We want to check that built size is the same as calculated | |
| 12189 | size. rawsize is a convenient location to use. */ | |
| 12190 | stub_sec->rawsize = stub_sec->size; | |
| 12191 | stub_sec->size = 0; | |
| e717da7e | 12192 | } |
| 5d1634d7 | 12193 | |
| 23eb7e01 | 12194 | if (htab->glink != NULL && htab->glink->size != 0) |
| 5d1634d7 | 12195 | { |
| 9f951329 | 12196 | unsigned int indx; |
| ad8e1ba5 | 12197 | bfd_vma plt0; |
| 9f951329 | 12198 | |
| 721956f4 | 12199 | /* Build the .glink plt call stub. */ |
| 97b639ba AM |
12200 | if (htab->emit_stub_syms) |
| 12201 | { | |
| 12202 | struct elf_link_hash_entry *h; | |
| 468392fb AM |
12203 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
| 12204 | TRUE, FALSE, FALSE); | |
| 97b639ba AM |
12205 | if (h == NULL) |
| 12206 | return FALSE; | |
| 12207 | if (h->root.type == bfd_link_hash_new) | |
| 12208 | { | |
| 12209 | h->root.type = bfd_link_hash_defined; | |
| 12210 | h->root.u.def.section = htab->glink; | |
| ee4bf8d2 | 12211 | h->root.u.def.value = 8; |
| f5385ebf AM |
12212 | h->ref_regular = 1; |
| 12213 | h->def_regular = 1; | |
| 12214 | h->ref_regular_nonweak = 1; | |
| 12215 | h->forced_local = 1; | |
| 12216 | h->non_elf = 0; | |
| 97b639ba AM |
12217 | } |
| 12218 | } | |
| 176a0d42 AM |
12219 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
| 12220 | if (info->emitrelocations) | |
| 12221 | { | |
| 12222 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
| 12223 | if (r == NULL) | |
| 12224 | return FALSE; | |
| 12225 | r->r_offset = (htab->glink->output_offset | |
| 12226 | + htab->glink->output_section->vma); | |
| 12227 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
| 12228 | r->r_addend = plt0; | |
| 12229 | } | |
| 4ce794b7 | 12230 | p = htab->glink->contents; |
| 176a0d42 | 12231 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
| ee4bf8d2 AM |
12232 | bfd_put_64 (htab->glink->owner, plt0, p); |
| 12233 | p += 8; | |
| 12234 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
| ad8e1ba5 | 12235 | p += 4; |
| ee4bf8d2 | 12236 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
| ad8e1ba5 | 12237 | p += 4; |
| ee4bf8d2 | 12238 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
| ad8e1ba5 | 12239 | p += 4; |
| 71a39c98 | 12240 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
| ad8e1ba5 | 12241 | p += 4; |
| ee4bf8d2 | 12242 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
| ad8e1ba5 | 12243 | p += 4; |
| 71a39c98 | 12244 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); |
| ad8e1ba5 | 12245 | p += 4; |
| 71a39c98 | 12246 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); |
| ad8e1ba5 | 12247 | p += 4; |
| 71a39c98 | 12248 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); |
| ad8e1ba5 | 12249 | p += 4; |
| 71a39c98 | 12250 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); |
| ad8e1ba5 | 12251 | p += 4; |
| 71a39c98 | 12252 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); |
| ad8e1ba5 | 12253 | p += 4; |
| 4ce794b7 | 12254 | bfd_put_32 (htab->glink->owner, BCTR, p); |
| ad8e1ba5 | 12255 | p += 4; |
| ee4bf8d2 AM |
12256 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
| 12257 | { | |
| 12258 | bfd_put_32 (htab->glink->owner, NOP, p); | |
| 12259 | p += 4; | |
| 12260 | } | |
| ad8e1ba5 | 12261 | |
| 9f951329 AM |
12262 | /* Build the .glink lazy link call stubs. */ |
| 12263 | indx = 0; | |
| eea6121a | 12264 | while (p < htab->glink->contents + htab->glink->size) |
| 9f951329 AM |
12265 | { |
| 12266 | if (indx < 0x8000) | |
| 12267 | { | |
| 4ce794b7 | 12268 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
| 9f951329 AM |
12269 | p += 4; |
| 12270 | } | |
| 12271 | else | |
| 12272 | { | |
| 4ce794b7 | 12273 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
| 9f951329 | 12274 | p += 4; |
| 4ce794b7 | 12275 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
| 9f951329 AM |
12276 | p += 4; |
| 12277 | } | |
| 4ce794b7 | 12278 | bfd_put_32 (htab->glink->owner, |
| ee4bf8d2 | 12279 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
| a16d5acb | 12280 | indx++; |
| 9f951329 AM |
12281 | p += 4; |
| 12282 | } | |
| eea6121a | 12283 | htab->glink->rawsize = p - htab->glink->contents; |
| 5d1634d7 | 12284 | } |
| 5d1634d7 | 12285 | |
| eea6121a | 12286 | if (htab->brlt->size != 0) |
| 721956f4 | 12287 | { |
| 4ce794b7 | 12288 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
| eea6121a | 12289 | htab->brlt->size); |
| 4ce794b7 | 12290 | if (htab->brlt->contents == NULL) |
| b34976b6 | 12291 | return FALSE; |
| 721956f4 | 12292 | } |
| ee75fd95 | 12293 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
| 63bc6f6c AM |
12294 | { |
| 12295 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
| eea6121a | 12296 | htab->relbrlt->size); |
| 63bc6f6c AM |
12297 | if (htab->relbrlt->contents == NULL) |
| 12298 | return FALSE; | |
| 12299 | } | |
| 5d1634d7 | 12300 | |
| 58d180e8 AM |
12301 | if (htab->glink_eh_frame != NULL |
| 12302 | && htab->glink_eh_frame->size != 0) | |
| 12303 | { | |
| 12304 | bfd_vma val; | |
| 4bbe044a AM |
12305 | bfd_byte *last_fde; |
| 12306 | size_t last_fde_len, size, align, pad; | |
| 58d180e8 AM |
12307 | |
| 12308 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
| 12309 | if (p == NULL) | |
| 12310 | return FALSE; | |
| 12311 | htab->glink_eh_frame->contents = p; | |
| 4bbe044a | 12312 | last_fde = p; |
| 58d180e8 AM |
12313 | |
| 12314 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
| 12315 | ||
| 12316 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
| 12317 | /* CIE length (rewrite in case little-endian). */ | |
| 4bbe044a AM |
12318 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; |
| 12319 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
| 58d180e8 AM |
12320 | p += sizeof (glink_eh_frame_cie); |
| 12321 | ||
| 12322 | for (stub_sec = htab->stub_bfd->sections; | |
| 12323 | stub_sec != NULL; | |
| 12324 | stub_sec = stub_sec->next) | |
| 12325 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12326 | { | |
| 4bbe044a AM |
12327 | last_fde = p; |
| 12328 | last_fde_len = 16; | |
| 58d180e8 AM |
12329 | /* FDE length. */ |
| 12330 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
| 12331 | p += 4; | |
| 12332 | /* CIE pointer. */ | |
| 12333 | val = p - htab->glink_eh_frame->contents; | |
| 12334 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12335 | p += 4; | |
| 12336 | /* Offset to stub section. */ | |
| 12337 | val = (stub_sec->output_section->vma | |
| 12338 | + stub_sec->output_offset); | |
| 12339 | val -= (htab->glink_eh_frame->output_section->vma | |
| 12340 | + htab->glink_eh_frame->output_offset); | |
| 12341 | val -= p - htab->glink_eh_frame->contents; | |
| 12342 | if (val + 0x80000000 > 0xffffffff) | |
| 12343 | { | |
| 12344 | info->callbacks->einfo | |
| 8de848d8 | 12345 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
| 58d180e8 AM |
12346 | stub_sec->name); |
| 12347 | return FALSE; | |
| 12348 | } | |
| 12349 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12350 | p += 4; | |
| 12351 | /* stub section size. */ | |
| 12352 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
| 12353 | p += 4; | |
| 12354 | /* Augmentation. */ | |
| 12355 | p += 1; | |
| 12356 | /* Pad. */ | |
| 12357 | p += 3; | |
| 12358 | } | |
| 12359 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 12360 | { | |
| 4bbe044a AM |
12361 | last_fde = p; |
| 12362 | last_fde_len = 20; | |
| 58d180e8 AM |
12363 | /* FDE length. */ |
| 12364 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
| 12365 | p += 4; | |
| 12366 | /* CIE pointer. */ | |
| 12367 | val = p - htab->glink_eh_frame->contents; | |
| 12368 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12369 | p += 4; | |
| 12370 | /* Offset to .glink. */ | |
| 12371 | val = (htab->glink->output_section->vma | |
| 12372 | + htab->glink->output_offset | |
| 12373 | + 8); | |
| 12374 | val -= (htab->glink_eh_frame->output_section->vma | |
| 12375 | + htab->glink_eh_frame->output_offset); | |
| 12376 | val -= p - htab->glink_eh_frame->contents; | |
| 12377 | if (val + 0x80000000 > 0xffffffff) | |
| 12378 | { | |
| 12379 | info->callbacks->einfo | |
| 8de848d8 | 12380 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
| 58d180e8 AM |
12381 | htab->glink->name); |
| 12382 | return FALSE; | |
| 12383 | } | |
| 12384 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12385 | p += 4; | |
| 12386 | /* .glink size. */ | |
| 12387 | bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p); | |
| 12388 | p += 4; | |
| 12389 | /* Augmentation. */ | |
| 12390 | p += 1; | |
| 12391 | ||
| 12392 | *p++ = DW_CFA_advance_loc + 1; | |
| 12393 | *p++ = DW_CFA_register; | |
| 12394 | *p++ = 65; | |
| 12395 | *p++ = 12; | |
| 12396 | *p++ = DW_CFA_advance_loc + 4; | |
| 12397 | *p++ = DW_CFA_restore_extended; | |
| 12398 | *p++ = 65; | |
| 12399 | } | |
| 4bbe044a AM |
12400 | /* Subsume any padding into the last FDE if user .eh_frame |
| 12401 | sections are aligned more than glink_eh_frame. Otherwise any | |
| 12402 | zero padding will be seen as a terminator. */ | |
| 12403 | size = p - htab->glink_eh_frame->contents; | |
| 12404 | align = 1; | |
| 12405 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
| 12406 | align -= 1; | |
| 12407 | pad = ((size + align) & ~align) - size; | |
| 12408 | htab->glink_eh_frame->size = size + pad; | |
| 12409 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
| 58d180e8 AM |
12410 | } |
| 12411 | ||
| 721956f4 AM |
12412 | /* Build the stubs as directed by the stub hash table. */ |
| 12413 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
| 5d1634d7 | 12414 | |
| aa8a7074 AM |
12415 | if (htab->relbrlt != NULL) |
| 12416 | htab->relbrlt->reloc_count = 0; | |
| 12417 | ||
| 794e51c0 AM |
12418 | if (htab->plt_stub_align != 0) |
| 12419 | for (stub_sec = htab->stub_bfd->sections; | |
| 12420 | stub_sec != NULL; | |
| 12421 | stub_sec = stub_sec->next) | |
| 12422 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12423 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
| 12424 | & (-1 << htab->plt_stub_align)); | |
| 12425 | ||
| 721956f4 AM |
12426 | for (stub_sec = htab->stub_bfd->sections; |
| 12427 | stub_sec != NULL; | |
| 12428 | stub_sec = stub_sec->next) | |
| e717da7e AM |
12429 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| 12430 | { | |
| 12431 | stub_sec_count += 1; | |
| eea6121a | 12432 | if (stub_sec->rawsize != stub_sec->size) |
| e717da7e AM |
12433 | break; |
| 12434 | } | |
| 5d1634d7 | 12435 | |
| 721956f4 | 12436 | if (stub_sec != NULL |
| 58d180e8 AM |
12437 | || htab->glink->rawsize != htab->glink->size |
| 12438 | || (htab->glink_eh_frame != NULL | |
| 12439 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
| 5d1634d7 | 12440 | { |
| b34976b6 | 12441 | htab->stub_error = TRUE; |
| 8de848d8 | 12442 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
| 5d1634d7 | 12443 | } |
| 721956f4 | 12444 | |
| d2a300cf AM |
12445 | if (htab->stub_error) |
| 12446 | return FALSE; | |
| 12447 | ||
| 12448 | if (stats != NULL) | |
| 12449 | { | |
| 12450 | *stats = bfd_malloc (500); | |
| 12451 | if (*stats == NULL) | |
| 12452 | return FALSE; | |
| 12453 | ||
| ee75fd95 | 12454 | sprintf (*stats, _("linker stubs in %u group%s\n" |
| d2a300cf AM |
12455 | " branch %lu\n" |
| 12456 | " toc adjust %lu\n" | |
| 12457 | " long branch %lu\n" | |
| 12458 | " long toc adj %lu\n" | |
| 794e51c0 AM |
12459 | " plt call %lu\n" |
| 12460 | " plt call toc %lu"), | |
| e717da7e | 12461 | stub_sec_count, |
| ee75fd95 | 12462 | stub_sec_count == 1 ? "" : "s", |
| 4ce794b7 AM |
12463 | htab->stub_count[ppc_stub_long_branch - 1], |
| 12464 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
| 12465 | htab->stub_count[ppc_stub_plt_branch - 1], | |
| 12466 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
| 794e51c0 AM |
12467 | htab->stub_count[ppc_stub_plt_call - 1], |
| 12468 | htab->stub_count[ppc_stub_plt_call_r2save - 1]); | |
| d2a300cf AM |
12469 | } |
| 12470 | return TRUE; | |
| 5bd4f169 AM |
12471 | } |
| 12472 | ||
| 99877b66 AM |
12473 | /* This function undoes the changes made by add_symbol_adjust. */ |
| 12474 | ||
| 12475 | static bfd_boolean | |
| 12476 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 12477 | { | |
| 12478 | struct ppc_link_hash_entry *eh; | |
| 12479 | ||
| 12480 | if (h->root.type == bfd_link_hash_indirect) | |
| 12481 | return TRUE; | |
| 12482 | ||
| 99877b66 AM |
12483 | eh = (struct ppc_link_hash_entry *) h; |
| 12484 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
| 12485 | return TRUE; | |
| 12486 | ||
| 12487 | eh->elf.root.type = bfd_link_hash_undefined; | |
| 12488 | return TRUE; | |
| 12489 | } | |
| 12490 | ||
| 12491 | void | |
| 12492 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
| 12493 | { | |
| 12494 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
12495 | |
| 12496 | if (htab != NULL) | |
| 12497 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
| 99877b66 AM |
12498 | } |
| 12499 | ||
| 60124e18 AM |
12500 | /* What to do when ld finds relocations against symbols defined in |
| 12501 | discarded sections. */ | |
| 12502 | ||
| 12503 | static unsigned int | |
| 12504 | ppc64_elf_action_discarded (asection *sec) | |
| 12505 | { | |
| 12506 | if (strcmp (".opd", sec->name) == 0) | |
| 12507 | return 0; | |
| 12508 | ||
| 12509 | if (strcmp (".toc", sec->name) == 0) | |
| 12510 | return 0; | |
| 12511 | ||
| bce50a28 JJ |
12512 | if (strcmp (".toc1", sec->name) == 0) |
| 12513 | return 0; | |
| 12514 | ||
| 60124e18 AM |
12515 | return _bfd_elf_default_action_discarded (sec); |
| 12516 | } | |
| 12517 | ||
| 5bd4f169 AM |
12518 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 12519 | to handle the relocations for a section. | |
| 12520 | ||
| 12521 | The relocs are always passed as Rela structures; if the section | |
| 12522 | actually uses Rel structures, the r_addend field will always be | |
| 12523 | zero. | |
| 12524 | ||
| 12525 | This function is responsible for adjust the section contents as | |
| 12526 | necessary, and (if using Rela relocs and generating a | |
| 1049f94e | 12527 | relocatable output file) adjusting the reloc addend as |
| 5bd4f169 AM |
12528 | necessary. |
| 12529 | ||
| 12530 | This function does not have to worry about setting the reloc | |
| 12531 | address or the reloc symbol index. | |
| 12532 | ||
| 12533 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
| 12534 | ||
| 12535 | LOCAL_SECTIONS is an array giving the section in the input file | |
| 12536 | corresponding to the st_shndx field of each local symbol. | |
| 12537 | ||
| 12538 | The global hash table entry for the global symbols can be found | |
| 12539 | via elf_sym_hashes (input_bfd). | |
| 12540 | ||
| 1049f94e | 12541 | When generating relocatable output, this function must handle |
| 5bd4f169 AM |
12542 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 12543 | going to be the section symbol corresponding to the output | |
| 12544 | section, which means that the addend must be adjusted | |
| 12545 | accordingly. */ | |
| 12546 | ||
| b34976b6 | 12547 | static bfd_boolean |
| 4ce794b7 AM |
12548 | ppc64_elf_relocate_section (bfd *output_bfd, |
| 12549 | struct bfd_link_info *info, | |
| 12550 | bfd *input_bfd, | |
| 12551 | asection *input_section, | |
| 12552 | bfd_byte *contents, | |
| 12553 | Elf_Internal_Rela *relocs, | |
| 12554 | Elf_Internal_Sym *local_syms, | |
| 12555 | asection **local_sections) | |
| 5bd4f169 | 12556 | { |
| 65f38f15 | 12557 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
12558 | Elf_Internal_Shdr *symtab_hdr; |
| 12559 | struct elf_link_hash_entry **sym_hashes; | |
| 5bd4f169 AM |
12560 | Elf_Internal_Rela *rel; |
| 12561 | Elf_Internal_Rela *relend; | |
| 411e1bfb AM |
12562 | Elf_Internal_Rela outrel; |
| 12563 | bfd_byte *loc; | |
| 411e1bfb | 12564 | struct got_entry **local_got_ents; |
| 5bd4f169 | 12565 | bfd_vma TOCstart; |
| b34976b6 AM |
12566 | bfd_boolean ret = TRUE; |
| 12567 | bfd_boolean is_opd; | |
| 794e51c0 AM |
12568 | /* Assume 'at' branch hints. */ |
| 12569 | bfd_boolean is_isa_v2 = TRUE; | |
| 4fe5ca5b | 12570 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
| 5bd4f169 | 12571 | |
| 65f38f15 | 12572 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 12573 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
12574 | ppc_howto_init (); |
| 12575 | ||
| 65f38f15 | 12576 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
12577 | if (htab == NULL) |
| 12578 | return FALSE; | |
| ee75fd95 AM |
12579 | |
| 12580 | /* Don't relocate stub sections. */ | |
| 12581 | if (input_section->owner == htab->stub_bfd) | |
| 12582 | return TRUE; | |
| 12583 | ||
| 0c8d6e5c | 12584 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
| 0ffa91dd | 12585 | |
| 411e1bfb | 12586 | local_got_ents = elf_local_got_ents (input_bfd); |
| 5bd4f169 | 12587 | TOCstart = elf_gp (output_bfd); |
| 0ffa91dd | 12588 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 5bd4f169 | 12589 | sym_hashes = elf_sym_hashes (input_bfd); |
| 7c8fe5c4 | 12590 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
| 65f38f15 | 12591 | |
| 5bd4f169 AM |
12592 | rel = relocs; |
| 12593 | relend = relocs + input_section->reloc_count; | |
| 12594 | for (; rel < relend; rel++) | |
| 12595 | { | |
| 04c9666a | 12596 | enum elf_ppc64_reloc_type r_type; |
| 31c76678 | 12597 | bfd_vma addend; |
| 5bd4f169 AM |
12598 | bfd_reloc_status_type r; |
| 12599 | Elf_Internal_Sym *sym; | |
| 12600 | asection *sec; | |
| 039b3fef AM |
12601 | struct elf_link_hash_entry *h_elf; |
| 12602 | struct ppc_link_hash_entry *h; | |
| 12603 | struct ppc_link_hash_entry *fdh; | |
| 5bd4f169 | 12604 | const char *sym_name; |
| 0d4792f7 | 12605 | unsigned long r_symndx, toc_symndx; |
| 3a71aa26 | 12606 | bfd_vma toc_addend; |
| f961d9dd AM |
12607 | unsigned char tls_mask, tls_gd, tls_type; |
| 12608 | unsigned char sym_type; | |
| 5bd4f169 | 12609 | bfd_vma relocation; |
| b34976b6 AM |
12610 | bfd_boolean unresolved_reloc; |
| 12611 | bfd_boolean warned; | |
| bc30df16 | 12612 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
| 67f0cbdb | 12613 | unsigned int insn; |
| e11840f9 | 12614 | unsigned int mask; |
| 721956f4 AM |
12615 | struct ppc_stub_hash_entry *stub_entry; |
| 12616 | bfd_vma max_br_offset; | |
| 12617 | bfd_vma from; | |
| 31c76678 | 12618 | const Elf_Internal_Rela orig_rel = *rel; |
| 5bd4f169 | 12619 | |
| 4ce794b7 | 12620 | r_type = ELF64_R_TYPE (rel->r_info); |
| 5bd4f169 | 12621 | r_symndx = ELF64_R_SYM (rel->r_info); |
| ee87f2da AM |
12622 | |
| 12623 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
| 12624 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
| 12625 | proper TOC base to use. */ | |
| 12626 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
| 12627 | && rel != relocs | |
| 12628 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
| 12629 | && is_opd) | |
| 12630 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
| 12631 | ||
| 4ce794b7 AM |
12632 | sym = NULL; |
| 12633 | sec = NULL; | |
| 039b3fef | 12634 | h_elf = NULL; |
| 4ce794b7 | 12635 | sym_name = NULL; |
| b34976b6 AM |
12636 | unresolved_reloc = FALSE; |
| 12637 | warned = FALSE; | |
| 65f38f15 | 12638 | |
| 0b13192e | 12639 | if (r_symndx < symtab_hdr->sh_info) |
| 5bd4f169 AM |
12640 | { |
| 12641 | /* It's a local symbol. */ | |
| 74f0fb50 | 12642 | struct _opd_sec_data *opd; |
| 4025353c | 12643 | |
| 5bd4f169 AM |
12644 | sym = local_syms + r_symndx; |
| 12645 | sec = local_sections[r_symndx]; | |
| 26c61ae5 | 12646 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
| 0d4792f7 | 12647 | sym_type = ELF64_ST_TYPE (sym->st_info); |
| 8517fae7 | 12648 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 74f0fb50 AM |
12649 | opd = get_opd_info (sec); |
| 12650 | if (opd != NULL && opd->adjust != NULL) | |
| 1e2f5b6e | 12651 | { |
| 74f0fb50 | 12652 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
| 4025353c AM |
12653 | if (adjust == -1) |
| 12654 | relocation = 0; | |
| 12655 | else | |
| 4cc603a5 AM |
12656 | { |
| 12657 | /* If this is a relocation against the opd section sym | |
| 12658 | and we have edited .opd, adjust the reloc addend so | |
| 12659 | that ld -r and ld --emit-relocs output is correct. | |
| 12660 | If it is a reloc against some other .opd symbol, | |
| 12661 | then the symbol value will be adjusted later. */ | |
| 12662 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
| 12663 | rel->r_addend += adjust; | |
| 12664 | else | |
| 12665 | relocation += adjust; | |
| 12666 | } | |
| 1e2f5b6e | 12667 | } |
| 5bd4f169 AM |
12668 | } |
| 12669 | else | |
| 12670 | { | |
| b2a8e766 AM |
12671 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 12672 | r_symndx, symtab_hdr, sym_hashes, | |
| 039b3fef | 12673 | h_elf, sec, relocation, |
| b2a8e766 | 12674 | unresolved_reloc, warned); |
| 039b3fef AM |
12675 | sym_name = h_elf->root.root.string; |
| 12676 | sym_type = h_elf->type; | |
| b69fdb4e AM |
12677 | if (sec != NULL |
| 12678 | && sec->owner == output_bfd | |
| 12679 | && strcmp (sec->name, ".opd") == 0) | |
| 12680 | { | |
| 12681 | /* This is a symbol defined in a linker script. All | |
| 12682 | such are defined in output sections, even those | |
| 12683 | defined by simple assignment from a symbol defined in | |
| 12684 | an input section. Transfer the symbol to an | |
| 12685 | appropriate input .opd section, so that a branch to | |
| 12686 | this symbol will be mapped to the location specified | |
| 12687 | by the opd entry. */ | |
| 12688 | struct bfd_link_order *lo; | |
| 12689 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
| 12690 | if (lo->type == bfd_indirect_link_order) | |
| 12691 | { | |
| 12692 | asection *isec = lo->u.indirect.section; | |
| 12693 | if (h_elf->root.u.def.value >= isec->output_offset | |
| 12694 | && h_elf->root.u.def.value < (isec->output_offset | |
| 12695 | + isec->size)) | |
| 12696 | { | |
| 12697 | h_elf->root.u.def.value -= isec->output_offset; | |
| 12698 | h_elf->root.u.def.section = isec; | |
| 12699 | sec = isec; | |
| 12700 | break; | |
| 12701 | } | |
| 12702 | } | |
| 12703 | } | |
| 5bd4f169 | 12704 | } |
| 039b3fef | 12705 | h = (struct ppc_link_hash_entry *) h_elf; |
| 5bd4f169 | 12706 | |
| dbaa2011 | 12707 | if (sec != NULL && discarded_section (sec)) |
| e4067dbb | 12708 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 545fd46b MR |
12709 | rel, 1, relend, |
| 12710 | ppc64_elf_howto_table[r_type], 0, | |
| e4067dbb | 12711 | contents); |
| ab96bf03 AM |
12712 | |
| 12713 | if (info->relocatable) | |
| 12714 | continue; | |
| 12715 | ||
| f40da81b AM |
12716 | if (h != NULL && &h->elf == htab->elf.hgot) |
| 12717 | { | |
| 12718 | relocation = (TOCstart | |
| 12719 | + htab->stub_group[input_section->id].toc_off); | |
| 12720 | sec = bfd_abs_section_ptr; | |
| 12721 | unresolved_reloc = FALSE; | |
| 12722 | } | |
| 12723 | ||
| 951fd09b AM |
12724 | /* TLS optimizations. Replace instruction sequences and relocs |
| 12725 | based on information we collected in tls_optimize. We edit | |
| 12726 | RELOCS so that --emit-relocs will output something sensible | |
| 12727 | for the final instruction stream. */ | |
| 12728 | tls_mask = 0; | |
| 12729 | tls_gd = 0; | |
| 0d4792f7 | 12730 | toc_symndx = 0; |
| 727fc41e AM |
12731 | if (h != NULL) |
| 12732 | tls_mask = h->tls_mask; | |
| 12733 | else if (local_got_ents != NULL) | |
| 411e1bfb | 12734 | { |
| e054468f AM |
12735 | struct plt_entry **local_plt = (struct plt_entry **) |
| 12736 | (local_got_ents + symtab_hdr->sh_info); | |
| f961d9dd | 12737 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 12738 | (local_plt + symtab_hdr->sh_info); |
| 727fc41e AM |
12739 | tls_mask = lgot_masks[r_symndx]; |
| 12740 | } | |
| 12741 | if (tls_mask == 0 | |
| 12742 | && (r_type == R_PPC64_TLS | |
| 12743 | || r_type == R_PPC64_TLSGD | |
| 12744 | || r_type == R_PPC64_TLSLD)) | |
| 12745 | { | |
| 12746 | /* Check for toc tls entries. */ | |
| f961d9dd | 12747 | unsigned char *toc_tls; |
| 0d4792f7 | 12748 | |
| 727fc41e AM |
12749 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 12750 | &local_syms, rel, input_bfd)) | |
| 12751 | return FALSE; | |
| 0d4792f7 | 12752 | |
| 727fc41e AM |
12753 | if (toc_tls) |
| 12754 | tls_mask = *toc_tls; | |
| 0d4792f7 AM |
12755 | } |
| 12756 | ||
| 12757 | /* Check that tls relocs are used with tls syms, and non-tls | |
| 12758 | relocs are used with non-tls syms. */ | |
| cf35638d | 12759 | if (r_symndx != STN_UNDEF |
| 0d4792f7 AM |
12760 | && r_type != R_PPC64_NONE |
| 12761 | && (h == NULL | |
| 039b3fef AM |
12762 | || h->elf.root.type == bfd_link_hash_defined |
| 12763 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 1d483afe AM |
12764 | && (IS_PPC64_TLS_RELOC (r_type) |
| 12765 | != (sym_type == STT_TLS | |
| 12766 | || (sym_type == STT_SECTION | |
| 12767 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
| 0d4792f7 | 12768 | { |
| 727fc41e AM |
12769 | if (tls_mask != 0 |
| 12770 | && (r_type == R_PPC64_TLS | |
| 12771 | || r_type == R_PPC64_TLSGD | |
| 12772 | || r_type == R_PPC64_TLSLD)) | |
| 0d4792f7 AM |
12773 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
| 12774 | ; | |
| 12775 | else | |
| 25f53a85 | 12776 | info->callbacks->einfo |
| 1d483afe | 12777 | (!IS_PPC64_TLS_RELOC (r_type) |
| bc30df16 AM |
12778 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
| 12779 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
| 25f53a85 | 12780 | input_bfd, input_section, rel->r_offset, |
| 0d4792f7 AM |
12781 | ppc64_elf_howto_table[r_type]->name, |
| 12782 | sym_name); | |
| 411e1bfb AM |
12783 | } |
| 12784 | ||
| 12785 | /* Ensure reloc mapping code below stays sane. */ | |
| 12786 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
| 12787 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
| 12788 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
| 12789 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
| 12790 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
| 12791 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
| 12792 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
| 12793 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
| 12794 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
| 12795 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
| 12796 | abort (); | |
| 0d4792f7 | 12797 | |
| 411e1bfb AM |
12798 | switch (r_type) |
| 12799 | { | |
| 12800 | default: | |
| 411e1bfb AM |
12801 | break; |
| 12802 | ||
| ba761f19 AM |
12803 | case R_PPC64_LO_DS_OPT: |
| 12804 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
| 12805 | if ((insn & (0x3f << 26)) != 58u << 26) | |
| 12806 | abort (); | |
| 12807 | insn += (14u << 26) - (58u << 26); | |
| 12808 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
| 12809 | r_type = R_PPC64_TOC16_LO; | |
| 12810 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 12811 | break; | |
| 12812 | ||
| 411e1bfb AM |
12813 | case R_PPC64_TOC16: |
| 12814 | case R_PPC64_TOC16_LO: | |
| 12815 | case R_PPC64_TOC16_DS: | |
| 12816 | case R_PPC64_TOC16_LO_DS: | |
| 411e1bfb AM |
12817 | { |
| 12818 | /* Check for toc tls entries. */ | |
| f961d9dd | 12819 | unsigned char *toc_tls; |
| 951fd09b | 12820 | int retval; |
| 411e1bfb | 12821 | |
| 3a71aa26 AM |
12822 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 12823 | &local_syms, rel, input_bfd); | |
| 951fd09b | 12824 | if (retval == 0) |
| 411e1bfb AM |
12825 | return FALSE; |
| 12826 | ||
| 12827 | if (toc_tls) | |
| 12828 | { | |
| 951fd09b | 12829 | tls_mask = *toc_tls; |
| 411e1bfb AM |
12830 | if (r_type == R_PPC64_TOC16_DS |
| 12831 | || r_type == R_PPC64_TOC16_LO_DS) | |
| 81407a69 AM |
12832 | { |
| 12833 | if (tls_mask != 0 | |
| 12834 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
| 12835 | goto toctprel; | |
| 12836 | } | |
| 411e1bfb | 12837 | else |
| 951fd09b AM |
12838 | { |
| 12839 | /* If we found a GD reloc pair, then we might be | |
| 12840 | doing a GD->IE transition. */ | |
| 12841 | if (retval == 2) | |
| 12842 | { | |
| 12843 | tls_gd = TLS_TPRELGD; | |
| 12844 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 12845 | goto tls_ldgd_opt; |
| 951fd09b AM |
12846 | } |
| 12847 | else if (retval == 3) | |
| 12848 | { | |
| 12849 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 102890f0 | 12850 | goto tls_ldgd_opt; |
| 951fd09b AM |
12851 | } |
| 12852 | } | |
| 411e1bfb AM |
12853 | } |
| 12854 | } | |
| 12855 | break; | |
| 12856 | ||
| 9d6ded02 AM |
12857 | case R_PPC64_GOT_TPREL16_HI: |
| 12858 | case R_PPC64_GOT_TPREL16_HA: | |
| 12859 | if (tls_mask != 0 | |
| 12860 | && (tls_mask & TLS_TPREL) == 0) | |
| 12861 | { | |
| 12862 | rel->r_offset -= d_offset; | |
| 12863 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
| 12864 | r_type = R_PPC64_NONE; | |
| 12865 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 12866 | } | |
| 12867 | break; | |
| 12868 | ||
| 411e1bfb AM |
12869 | case R_PPC64_GOT_TPREL16_DS: |
| 12870 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 951fd09b AM |
12871 | if (tls_mask != 0 |
| 12872 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 12873 | { |
| 81407a69 | 12874 | toctprel: |
| 4fe5ca5b | 12875 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
| 411e1bfb AM |
12876 | insn &= 31 << 21; |
| 12877 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
| 4fe5ca5b | 12878 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
| 411e1bfb | 12879 | r_type = R_PPC64_TPREL16_HA; |
| 0d4792f7 AM |
12880 | if (toc_symndx != 0) |
| 12881 | { | |
| 12882 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 12883 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
12884 | /* We changed the symbol. Start over in order to |
| 12885 | get h, sym, sec etc. right. */ | |
| 12886 | rel--; | |
| 12887 | continue; | |
| 12888 | } | |
| 12889 | else | |
| 12890 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
12891 | } |
| 12892 | break; | |
| 12893 | ||
| 12894 | case R_PPC64_TLS: | |
| 951fd09b AM |
12895 | if (tls_mask != 0 |
| 12896 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 12897 | { |
| 411e1bfb | 12898 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
| 2d0f3896 AM |
12899 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
| 12900 | if (insn == 0) | |
| 411e1bfb | 12901 | abort (); |
| 411e1bfb | 12902 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
| 411e1bfb | 12903 | /* Was PPC64_TLS which sits on insn boundary, now |
| 4fe5ca5b GM |
12904 | PPC64_TPREL16_LO which is at low-order half-word. */ |
| 12905 | rel->r_offset += d_offset; | |
| 0d4792f7 AM |
12906 | r_type = R_PPC64_TPREL16_LO; |
| 12907 | if (toc_symndx != 0) | |
| 12908 | { | |
| 12909 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 12910 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
12911 | /* We changed the symbol. Start over in order to |
| 12912 | get h, sym, sec etc. right. */ | |
| 12913 | rel--; | |
| 12914 | continue; | |
| 12915 | } | |
| 12916 | else | |
| 12917 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
12918 | } |
| 12919 | break; | |
| 12920 | ||
| 411e1bfb AM |
12921 | case R_PPC64_GOT_TLSGD16_HI: |
| 12922 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b AM |
12923 | tls_gd = TLS_TPRELGD; |
| 12924 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 12925 | goto tls_gdld_hi; | |
| 12926 | break; | |
| 12927 | ||
| 411e1bfb AM |
12928 | case R_PPC64_GOT_TLSLD16_HI: |
| 12929 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 12930 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
| 411e1bfb | 12931 | { |
| 951fd09b AM |
12932 | tls_gdld_hi: |
| 12933 | if ((tls_mask & tls_gd) != 0) | |
| 12934 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 12935 | + R_PPC64_GOT_TPREL16_DS); | |
| 12936 | else | |
| 411e1bfb | 12937 | { |
| 4fe5ca5b | 12938 | rel->r_offset -= d_offset; |
| 727ac201 | 12939 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 951fd09b | 12940 | r_type = R_PPC64_NONE; |
| 411e1bfb | 12941 | } |
| 951fd09b | 12942 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb AM |
12943 | } |
| 12944 | break; | |
| 12945 | ||
| 951fd09b AM |
12946 | case R_PPC64_GOT_TLSGD16: |
| 12947 | case R_PPC64_GOT_TLSGD16_LO: | |
| 12948 | tls_gd = TLS_TPRELGD; | |
| 12949 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 12950 | goto tls_ldgd_opt; |
| 951fd09b | 12951 | break; |
| 411e1bfb | 12952 | |
| 951fd09b AM |
12953 | case R_PPC64_GOT_TLSLD16: |
| 12954 | case R_PPC64_GOT_TLSLD16_LO: | |
| 12955 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 12956 | { | |
| 3a71aa26 | 12957 | unsigned int insn1, insn2, insn3; |
| 102890f0 AM |
12958 | bfd_vma offset; |
| 12959 | ||
| 12960 | tls_ldgd_opt: | |
| 727fc41e AM |
12961 | offset = (bfd_vma) -1; |
| 12962 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
| 12963 | __tls_get_addr calls, we must trust that the call | |
| 12964 | stays with its arg setup insns, ie. that the next | |
| 12965 | reloc is the __tls_get_addr call associated with | |
| 12966 | the current reloc. Edit both insns. */ | |
| 12967 | if (input_section->has_tls_get_addr_call | |
| 12968 | && rel + 1 < relend | |
| 12969 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
| 12970 | htab->tls_get_addr, | |
| 12971 | htab->tls_get_addr_fd)) | |
| 12972 | offset = rel[1].r_offset; | |
| 102890f0 | 12973 | if ((tls_mask & tls_gd) != 0) |
| 411e1bfb | 12974 | { |
| 102890f0 | 12975 | /* IE */ |
| 3a71aa26 AM |
12976 | insn1 = bfd_get_32 (output_bfd, |
| 12977 | contents + rel->r_offset - d_offset); | |
| 102890f0 AM |
12978 | insn1 &= (1 << 26) - (1 << 2); |
| 12979 | insn1 |= 58 << 26; /* ld */ | |
| 12980 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 727fc41e | 12981 | if (offset != (bfd_vma) -1) |
| f58d5a2d | 12982 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 102890f0 AM |
12983 | if ((tls_mask & TLS_EXPLICIT) == 0) |
| 12984 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 12985 | + R_PPC64_GOT_TPREL16_DS); | |
| 411e1bfb | 12986 | else |
| 102890f0 AM |
12987 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
| 12988 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 12989 | } | |
| 12990 | else | |
| 12991 | { | |
| 12992 | /* LE */ | |
| 12993 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
| 12994 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 12995 | if (tls_gd == 0) | |
| 951fd09b | 12996 | { |
| 102890f0 | 12997 | /* Was an LD reloc. */ |
| 1d483afe AM |
12998 | if (toc_symndx) |
| 12999 | sec = local_sections[toc_symndx]; | |
| 13000 | for (r_symndx = 0; | |
| 13001 | r_symndx < symtab_hdr->sh_info; | |
| 13002 | r_symndx++) | |
| 13003 | if (local_sections[r_symndx] == sec) | |
| 13004 | break; | |
| 13005 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13006 | r_symndx = STN_UNDEF; |
| 102890f0 | 13007 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13008 | if (r_symndx != STN_UNDEF) |
| 1d483afe AM |
13009 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13010 | + sec->output_offset | |
| 13011 | + sec->output_section->vma); | |
| 951fd09b | 13012 | } |
| 102890f0 | 13013 | else if (toc_symndx != 0) |
| 3a71aa26 AM |
13014 | { |
| 13015 | r_symndx = toc_symndx; | |
| 13016 | rel->r_addend = toc_addend; | |
| 13017 | } | |
| 102890f0 AM |
13018 | r_type = R_PPC64_TPREL16_HA; |
| 13019 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 727fc41e AM |
13020 | if (offset != (bfd_vma) -1) |
| 13021 | { | |
| 13022 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
| 13023 | R_PPC64_TPREL16_LO); | |
| 13024 | rel[1].r_offset = offset + d_offset; | |
| 13025 | rel[1].r_addend = rel->r_addend; | |
| 13026 | } | |
| 102890f0 | 13027 | } |
| 3a71aa26 AM |
13028 | bfd_put_32 (output_bfd, insn1, |
| 13029 | contents + rel->r_offset - d_offset); | |
| 727fc41e AM |
13030 | if (offset != (bfd_vma) -1) |
| 13031 | { | |
| 13032 | insn3 = bfd_get_32 (output_bfd, | |
| 13033 | contents + offset + 4); | |
| 13034 | if (insn3 == NOP | |
| 13035 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13036 | { | |
| 13037 | rel[1].r_offset += 4; | |
| 13038 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 13039 | insn2 = NOP; | |
| 13040 | } | |
| 13041 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 13042 | } | |
| 13043 | if ((tls_mask & tls_gd) == 0 | |
| 13044 | && (tls_gd == 0 || toc_symndx != 0)) | |
| 13045 | { | |
| 13046 | /* We changed the symbol. Start over in order | |
| 13047 | to get h, sym, sec etc. right. */ | |
| 13048 | rel--; | |
| 13049 | continue; | |
| 13050 | } | |
| 13051 | } | |
| 13052 | break; | |
| 13053 | ||
| 13054 | case R_PPC64_TLSGD: | |
| 13055 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13056 | { | |
| 13057 | unsigned int insn2, insn3; | |
| 13058 | bfd_vma offset = rel->r_offset; | |
| 13059 | ||
| 13060 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13061 | { | |
| 13062 | /* IE */ | |
| 13063 | r_type = R_PPC64_NONE; | |
| 13064 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 13065 | } | |
| 13066 | else | |
| 13067 | { | |
| 13068 | /* LE */ | |
| 13069 | if (toc_symndx != 0) | |
| 13070 | { | |
| 13071 | r_symndx = toc_symndx; | |
| 13072 | rel->r_addend = toc_addend; | |
| 13073 | } | |
| 13074 | r_type = R_PPC64_TPREL16_LO; | |
| 13075 | rel->r_offset = offset + d_offset; | |
| 13076 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 13077 | } | |
| 13078 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13079 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13080 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13081 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 3a71aa26 AM |
13082 | insn3 = bfd_get_32 (output_bfd, |
| 13083 | contents + offset + 4); | |
| 102890f0 AM |
13084 | if (insn3 == NOP |
| 13085 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13086 | { | |
| 727fc41e | 13087 | rel->r_offset += 4; |
| 3a71aa26 AM |
13088 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
| 13089 | insn2 = NOP; | |
| 102890f0 | 13090 | } |
| 102890f0 | 13091 | bfd_put_32 (output_bfd, insn2, contents + offset); |
| 727fc41e | 13092 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
| 102890f0 | 13093 | { |
| 102890f0 AM |
13094 | rel--; |
| 13095 | continue; | |
| 411e1bfb | 13096 | } |
| 411e1bfb | 13097 | } |
| 411e1bfb AM |
13098 | break; |
| 13099 | ||
| 727fc41e AM |
13100 | case R_PPC64_TLSLD: |
| 13101 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13102 | { | |
| 13103 | unsigned int insn2, insn3; | |
| 13104 | bfd_vma offset = rel->r_offset; | |
| 13105 | ||
| 13106 | if (toc_symndx) | |
| 13107 | sec = local_sections[toc_symndx]; | |
| 13108 | for (r_symndx = 0; | |
| 13109 | r_symndx < symtab_hdr->sh_info; | |
| 13110 | r_symndx++) | |
| 13111 | if (local_sections[r_symndx] == sec) | |
| 13112 | break; | |
| 13113 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13114 | r_symndx = STN_UNDEF; |
| 727fc41e | 13115 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13116 | if (r_symndx != STN_UNDEF) |
| 727fc41e AM |
13117 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13118 | + sec->output_offset | |
| 13119 | + sec->output_section->vma); | |
| 13120 | ||
| 13121 | r_type = R_PPC64_TPREL16_LO; | |
| 13122 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13123 | rel->r_offset = offset + d_offset; | |
| 13124 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13125 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13126 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 727fc41e AM |
13127 | insn2 = 0x38630000; /* addi 3,3,0 */ |
| 13128 | insn3 = bfd_get_32 (output_bfd, | |
| 13129 | contents + offset + 4); | |
| 13130 | if (insn3 == NOP | |
| 13131 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13132 | { | |
| 13133 | rel->r_offset += 4; | |
| 13134 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 13135 | insn2 = NOP; | |
| 13136 | } | |
| 13137 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 13138 | rel--; | |
| 13139 | continue; | |
| 13140 | } | |
| 13141 | break; | |
| 13142 | ||
| 411e1bfb | 13143 | case R_PPC64_DTPMOD64: |
| 951fd09b AM |
13144 | if (rel + 1 < relend |
| 13145 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 13146 | && rel[1].r_offset == rel->r_offset + 8) | |
| 411e1bfb | 13147 | { |
| 951fd09b AM |
13148 | if ((tls_mask & TLS_GD) == 0) |
| 13149 | { | |
| 13150 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
| 13151 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13152 | r_type = R_PPC64_TPREL64; | |
| 13153 | else | |
| 13154 | { | |
| 4ce794b7 | 13155 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 951fd09b AM |
13156 | r_type = R_PPC64_NONE; |
| 13157 | } | |
| 13158 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13159 | } | |
| 13160 | } | |
| 13161 | else | |
| 13162 | { | |
| 13163 | if ((tls_mask & TLS_LD) == 0) | |
| 411e1bfb | 13164 | { |
| 4ce794b7 | 13165 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 411e1bfb | 13166 | r_type = R_PPC64_NONE; |
| 951fd09b | 13167 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb | 13168 | } |
| 411e1bfb AM |
13169 | } |
| 13170 | break; | |
| 13171 | ||
| 13172 | case R_PPC64_TPREL64: | |
| 951fd09b | 13173 | if ((tls_mask & TLS_TPREL) == 0) |
| 411e1bfb AM |
13174 | { |
| 13175 | r_type = R_PPC64_NONE; | |
| 13176 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13177 | } | |
| 13178 | break; | |
| 13179 | } | |
| 13180 | ||
| 13181 | /* Handle other relocations that tweak non-addend part of insn. */ | |
| 86c76c7b | 13182 | insn = 0; |
| b25116a9 AM |
13183 | max_br_offset = 1 << 25; |
| 13184 | addend = rel->r_addend; | |
| bc30df16 | 13185 | reloc_dest = DEST_NORMAL; |
| 65f38f15 | 13186 | switch (r_type) |
| 5bd4f169 AM |
13187 | { |
| 13188 | default: | |
| 65f38f15 | 13189 | break; |
| 5bd4f169 | 13190 | |
| 3b421ab3 AM |
13191 | case R_PPC64_TOCSAVE: |
| 13192 | if (relocation + addend == (rel->r_offset | |
| 13193 | + input_section->output_offset | |
| 13194 | + input_section->output_section->vma) | |
| 13195 | && tocsave_find (htab, NO_INSERT, | |
| 13196 | &local_syms, rel, input_bfd)) | |
| 13197 | { | |
| 13198 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 13199 | if (insn == NOP | |
| 13200 | || insn == CROR_151515 || insn == CROR_313131) | |
| 13201 | bfd_put_32 (input_bfd, STD_R2_40R1, | |
| 13202 | contents + rel->r_offset); | |
| 13203 | } | |
| 13204 | break; | |
| 13205 | ||
| 65f38f15 AM |
13206 | /* Branch taken prediction relocations. */ |
| 13207 | case R_PPC64_ADDR14_BRTAKEN: | |
| 13208 | case R_PPC64_REL14_BRTAKEN: | |
| cedb70c5 KH |
13209 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 13210 | /* Fall thru. */ | |
| 65f38f15 | 13211 | |
| 86c76c7b | 13212 | /* Branch not taken prediction relocations. */ |
| 65f38f15 AM |
13213 | case R_PPC64_ADDR14_BRNTAKEN: |
| 13214 | case R_PPC64_REL14_BRNTAKEN: | |
| 411e1bfb AM |
13215 | insn |= bfd_get_32 (output_bfd, |
| 13216 | contents + rel->r_offset) & ~(0x01 << 21); | |
| b25116a9 | 13217 | /* Fall thru. */ |
| 86c76c7b | 13218 | |
| b25116a9 AM |
13219 | case R_PPC64_REL14: |
| 13220 | max_br_offset = 1 << 15; | |
| 13221 | /* Fall thru. */ | |
| 5bd4f169 | 13222 | |
| 65f38f15 | 13223 | case R_PPC64_REL24: |
| ad8e1ba5 AM |
13224 | /* Calls to functions with a different TOC, such as calls to |
| 13225 | shared objects, need to alter the TOC pointer. This is | |
| 13226 | done using a linkage stub. A REL24 branching to these | |
| 13227 | linkage stubs needs to be followed by a nop, as the nop | |
| 13228 | will be replaced with an instruction to restore the TOC | |
| 13229 | base pointer. */ | |
| 8387904d | 13230 | fdh = h; |
| b31867b6 AM |
13231 | if (h != NULL |
| 13232 | && h->oh != NULL | |
| 13233 | && h->oh->is_func_descriptor) | |
| 13234 | fdh = ppc_follow_link (h->oh); | |
| 31c76678 DK |
13235 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
| 13236 | htab); | |
| 6abec6bc | 13237 | if (stub_entry != NULL |
| ad8e1ba5 | 13238 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 794e51c0 | 13239 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
| ad8e1ba5 AM |
13240 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
| 13241 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
| 41bd81ab | 13242 | { |
| b25116a9 | 13243 | bfd_boolean can_plt_call = FALSE; |
| 721956f4 | 13244 | |
| ba8ca3e7 AM |
13245 | /* All of these stubs will modify r2, so there must be a |
| 13246 | branch and link followed by a nop. The nop is | |
| 13247 | replaced by an insn to restore r2. */ | |
| eea6121a | 13248 | if (rel->r_offset + 8 <= input_section->size) |
| 41bd81ab | 13249 | { |
| ba8ca3e7 AM |
13250 | unsigned long br; |
| 13251 | ||
| 13252 | br = bfd_get_32 (input_bfd, | |
| 13253 | contents + rel->r_offset); | |
| 13254 | if ((br & 1) != 0) | |
| 41bd81ab | 13255 | { |
| ba8ca3e7 AM |
13256 | unsigned long nop; |
| 13257 | ||
| 13258 | nop = bfd_get_32 (input_bfd, | |
| 13259 | contents + rel->r_offset + 4); | |
| 13260 | if (nop == NOP | |
| 13261 | || nop == CROR_151515 || nop == CROR_313131) | |
| a7f2871e | 13262 | { |
| ba8ca3e7 AM |
13263 | if (h != NULL |
| 13264 | && (h == htab->tls_get_addr_fd | |
| 13265 | || h == htab->tls_get_addr) | |
| 13266 | && !htab->no_tls_get_addr_opt) | |
| 13267 | { | |
| 13268 | /* Special stub used, leave nop alone. */ | |
| 13269 | } | |
| 13270 | else | |
| 13271 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
| 13272 | contents + rel->r_offset + 4); | |
| 13273 | can_plt_call = TRUE; | |
| a7f2871e | 13274 | } |
| 41bd81ab | 13275 | } |
| 5bd4f169 | 13276 | } |
| 721956f4 | 13277 | |
| ba8ca3e7 | 13278 | if (!can_plt_call && h != NULL) |
| 721956f4 | 13279 | { |
| ba8ca3e7 AM |
13280 | const char *name = h->elf.root.root.string; |
| 13281 | ||
| 13282 | if (*name == '.') | |
| 13283 | ++name; | |
| 13284 | ||
| 13285 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
| 13286 | && (name[17] == 0 || name[17] == '@')) | |
| 6ab189d5 | 13287 | { |
| ba8ca3e7 AM |
13288 | /* Allow crt1 branch to go via a toc adjusting |
| 13289 | stub. Other calls that never return could do | |
| 13290 | the same, if we could detect such. */ | |
| b25116a9 | 13291 | can_plt_call = TRUE; |
| 6ab189d5 | 13292 | } |
| ba8ca3e7 AM |
13293 | } |
| 13294 | ||
| 13295 | if (!can_plt_call) | |
| 13296 | { | |
| 13297 | /* g++ as of 20130507 emits self-calls without a | |
| 13298 | following nop. This is arguably wrong since we | |
| 13299 | have conflicting information. On the one hand a | |
| 13300 | global symbol and on the other a local call | |
| 13301 | sequence, but don't error for this special case. | |
| 13302 | It isn't possible to cheaply verify we have | |
| 13303 | exactly such a call. Allow all calls to the same | |
| 13304 | section. */ | |
| 13305 | asection *code_sec = sec; | |
| 13306 | ||
| 13307 | if (get_opd_info (sec) != NULL) | |
| ad8e1ba5 | 13308 | { |
| ba8ca3e7 AM |
13309 | bfd_vma off = (relocation + addend |
| 13310 | - sec->output_section->vma | |
| 13311 | - sec->output_offset); | |
| bc30df16 | 13312 | |
| ba8ca3e7 | 13313 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
| ad8e1ba5 | 13314 | } |
| ba8ca3e7 AM |
13315 | if (code_sec == input_section) |
| 13316 | can_plt_call = TRUE; | |
| 13317 | } | |
| 13318 | ||
| 13319 | if (!can_plt_call) | |
| 13320 | { | |
| 13321 | info->callbacks->einfo | |
| 13322 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
| 13323 | "recompile with -fPIC"), | |
| 13324 | input_bfd, input_section, rel->r_offset, sym_name); | |
| 13325 | ||
| 13326 | bfd_set_error (bfd_error_bad_value); | |
| 13327 | ret = FALSE; | |
| 721956f4 AM |
13328 | } |
| 13329 | ||
| b25116a9 | 13330 | if (can_plt_call |
| 794e51c0 AM |
13331 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 13332 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
| b25116a9 AM |
13333 | unresolved_reloc = FALSE; |
| 13334 | } | |
| 13335 | ||
| 6abec6bc AM |
13336 | if ((stub_entry == NULL |
| 13337 | || stub_entry->stub_type == ppc_stub_long_branch | |
| 13338 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 8387904d AM |
13339 | && get_opd_info (sec) != NULL) |
| 13340 | { | |
| 13341 | /* The branch destination is the value of the opd entry. */ | |
| 4cc603a5 AM |
13342 | bfd_vma off = (relocation + addend |
| 13343 | - sec->output_section->vma | |
| 13344 | - sec->output_offset); | |
| aef36ac1 | 13345 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
| 8387904d AM |
13346 | if (dest != (bfd_vma) -1) |
| 13347 | { | |
| 13348 | relocation = dest; | |
| 13349 | addend = 0; | |
| bc30df16 | 13350 | reloc_dest = DEST_OPD; |
| 8387904d AM |
13351 | } |
| 13352 | } | |
| 13353 | ||
| b25116a9 AM |
13354 | /* If the branch is out of reach we ought to have a long |
| 13355 | branch stub. */ | |
| 13356 | from = (rel->r_offset | |
| 13357 | + input_section->output_offset | |
| 13358 | + input_section->output_section->vma); | |
| 13359 | ||
| 6abec6bc AM |
13360 | if (stub_entry != NULL |
| 13361 | && (stub_entry->stub_type == ppc_stub_long_branch | |
| 13362 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 13363 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
| 13364 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
| 13365 | || (relocation + addend - from + max_br_offset | |
| 13366 | < 2 * max_br_offset))) | |
| 13367 | /* Don't use the stub if this branch is in range. */ | |
| 13368 | stub_entry = NULL; | |
| b25116a9 AM |
13369 | |
| 13370 | if (stub_entry != NULL) | |
| 13371 | { | |
| 13372 | /* Munge up the value and addend so that we call the stub | |
| 13373 | rather than the procedure directly. */ | |
| 13374 | relocation = (stub_entry->stub_offset | |
| 13375 | + stub_entry->stub_sec->output_offset | |
| 13376 | + stub_entry->stub_sec->output_section->vma); | |
| 13377 | addend = 0; | |
| bc30df16 | 13378 | reloc_dest = DEST_STUB; |
| 3b421ab3 | 13379 | |
| 794e51c0 AM |
13380 | if ((stub_entry->stub_type == ppc_stub_plt_call |
| 13381 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 13382 | && (ALWAYS_EMIT_R2SAVE | |
| 13383 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 3b421ab3 AM |
13384 | && rel + 1 < relend |
| 13385 | && rel[1].r_offset == rel->r_offset + 4 | |
| 13386 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
| 13387 | relocation += 4; | |
| b25116a9 AM |
13388 | } |
| 13389 | ||
| 13390 | if (insn != 0) | |
| 13391 | { | |
| 794e51c0 | 13392 | if (is_isa_v2) |
| 721956f4 | 13393 | { |
| b25116a9 AM |
13394 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 13395 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 13396 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 13397 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 13398 | insn |= 0x02 << 21; | |
| 13399 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 13400 | insn |= 0x08 << 21; | |
| 13401 | else | |
| 13402 | break; | |
| 13403 | } | |
| 13404 | else | |
| 13405 | { | |
| 13406 | /* Invert 'y' bit if not the default. */ | |
| 4cc603a5 | 13407 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
| b25116a9 | 13408 | insn ^= 0x01 << 21; |
| 721956f4 | 13409 | } |
| b25116a9 AM |
13410 | |
| 13411 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
| 5bd4f169 | 13412 | } |
| e86ce104 | 13413 | |
| 06da1e8e AM |
13414 | /* NOP out calls to undefined weak functions. |
| 13415 | We can thus call a weak function without first | |
| 13416 | checking whether the function is defined. */ | |
| b25116a9 | 13417 | else if (h != NULL |
| 039b3fef | 13418 | && h->elf.root.type == bfd_link_hash_undefweak |
| 766bc656 | 13419 | && h->elf.dynindx == -1 |
| b25116a9 AM |
13420 | && r_type == R_PPC64_REL24 |
| 13421 | && relocation == 0 | |
| 4cc603a5 | 13422 | && addend == 0) |
| e86ce104 | 13423 | { |
| 06da1e8e AM |
13424 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 13425 | continue; | |
| e86ce104 | 13426 | } |
| 65f38f15 AM |
13427 | break; |
| 13428 | } | |
| 5bd4f169 | 13429 | |
| 65f38f15 | 13430 | /* Set `addend'. */ |
| 411e1bfb | 13431 | tls_type = 0; |
| 65f38f15 AM |
13432 | switch (r_type) |
| 13433 | { | |
| 13434 | default: | |
| 25f53a85 | 13435 | info->callbacks->einfo |
| bc30df16 | 13436 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
| d003868e | 13437 | input_bfd, (int) r_type, sym_name); |
| 5bd4f169 | 13438 | |
| 65f38f15 | 13439 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 13440 | ret = FALSE; |
| 65f38f15 | 13441 | continue; |
| 5bd4f169 | 13442 | |
| 65f38f15 | 13443 | case R_PPC64_NONE: |
| 411e1bfb | 13444 | case R_PPC64_TLS: |
| 727fc41e AM |
13445 | case R_PPC64_TLSGD: |
| 13446 | case R_PPC64_TLSLD: | |
| 3b421ab3 | 13447 | case R_PPC64_TOCSAVE: |
| 04c9666a AM |
13448 | case R_PPC64_GNU_VTINHERIT: |
| 13449 | case R_PPC64_GNU_VTENTRY: | |
| 65f38f15 | 13450 | continue; |
| 5bd4f169 AM |
13451 | |
| 13452 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
| 13453 | address in the GOT as relocation value instead of the | |
| 411e1bfb | 13454 | symbol's value itself. Also, create a GOT entry for the |
| 5bd4f169 | 13455 | symbol and put the symbol value there. */ |
| 411e1bfb AM |
13456 | case R_PPC64_GOT_TLSGD16: |
| 13457 | case R_PPC64_GOT_TLSGD16_LO: | |
| 13458 | case R_PPC64_GOT_TLSGD16_HI: | |
| 13459 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 13460 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
13461 | goto dogot; |
| 13462 | ||
| 13463 | case R_PPC64_GOT_TLSLD16: | |
| 13464 | case R_PPC64_GOT_TLSLD16_LO: | |
| 13465 | case R_PPC64_GOT_TLSLD16_HI: | |
| 13466 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 13467 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
13468 | goto dogot; |
| 13469 | ||
| 13470 | case R_PPC64_GOT_TPREL16_DS: | |
| 13471 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 13472 | case R_PPC64_GOT_TPREL16_HI: | |
| 13473 | case R_PPC64_GOT_TPREL16_HA: | |
| 13474 | tls_type = TLS_TLS | TLS_TPREL; | |
| 13475 | goto dogot; | |
| 13476 | ||
| 13477 | case R_PPC64_GOT_DTPREL16_DS: | |
| 13478 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 13479 | case R_PPC64_GOT_DTPREL16_HI: | |
| 13480 | case R_PPC64_GOT_DTPREL16_HA: | |
| 13481 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 13482 | goto dogot; | |
| 13483 | ||
| 65f38f15 AM |
13484 | case R_PPC64_GOT16: |
| 13485 | case R_PPC64_GOT16_LO: | |
| 13486 | case R_PPC64_GOT16_HI: | |
| 13487 | case R_PPC64_GOT16_HA: | |
| 13488 | case R_PPC64_GOT16_DS: | |
| 13489 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb | 13490 | dogot: |
| 5bd4f169 AM |
13491 | { |
| 13492 | /* Relocation is to the entry for this symbol in the global | |
| 13493 | offset table. */ | |
| e717da7e | 13494 | asection *got; |
| d881513a | 13495 | bfd_vma *offp; |
| 5bd4f169 | 13496 | bfd_vma off; |
| d881513a | 13497 | unsigned long indx = 0; |
| 927be08e | 13498 | struct got_entry *ent; |
| 65f38f15 | 13499 | |
| d881513a AM |
13500 | if (tls_type == (TLS_TLS | TLS_LD) |
| 13501 | && (h == NULL | |
| f5385ebf | 13502 | || !h->elf.def_dynamic)) |
| 927be08e | 13503 | ent = ppc64_tlsld_got (input_bfd); |
| 411e1bfb | 13504 | else |
| 5bd4f169 | 13505 | { |
| 5bd4f169 | 13506 | |
| d881513a AM |
13507 | if (h != NULL) |
| 13508 | { | |
| 13509 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
| 039b3fef AM |
13510 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
| 13511 | &h->elf) | |
| d881513a | 13512 | || (info->shared |
| 726d3ab0 | 13513 | && SYMBOL_CALLS_LOCAL (info, &h->elf))) |
| d881513a AM |
13514 | /* This is actually a static link, or it is a |
| 13515 | -Bsymbolic link and the symbol is defined | |
| 13516 | locally, or the symbol was forced to be local | |
| 13517 | because of a version file. */ | |
| 13518 | ; | |
| 13519 | else | |
| 13520 | { | |
| 14acf4dc | 13521 | BFD_ASSERT (h->elf.dynindx != -1); |
| 039b3fef | 13522 | indx = h->elf.dynindx; |
| d881513a AM |
13523 | unresolved_reloc = FALSE; |
| 13524 | } | |
| 039b3fef | 13525 | ent = h->elf.got.glist; |
| d881513a | 13526 | } |
| 411e1bfb | 13527 | else |
| 5bd4f169 | 13528 | { |
| d881513a AM |
13529 | if (local_got_ents == NULL) |
| 13530 | abort (); | |
| 13531 | ent = local_got_ents[r_symndx]; | |
| 5bd4f169 | 13532 | } |
| d881513a AM |
13533 | |
| 13534 | for (; ent != NULL; ent = ent->next) | |
| 31c76678 | 13535 | if (ent->addend == orig_rel.r_addend |
| e717da7e | 13536 | && ent->owner == input_bfd |
| d881513a AM |
13537 | && ent->tls_type == tls_type) |
| 13538 | break; | |
| 5bd4f169 | 13539 | } |
| 411e1bfb | 13540 | |
| 927be08e AM |
13541 | if (ent == NULL) |
| 13542 | abort (); | |
| 13543 | if (ent->is_indirect) | |
| 13544 | ent = ent->got.ent; | |
| 13545 | offp = &ent->got.offset; | |
| 13546 | got = ppc64_elf_tdata (ent->owner)->got; | |
| e717da7e AM |
13547 | if (got == NULL) |
| 13548 | abort (); | |
| 13549 | ||
| 411e1bfb AM |
13550 | /* The offset must always be a multiple of 8. We use the |
| 13551 | least significant bit to record whether we have already | |
| 13552 | processed this entry. */ | |
| d881513a | 13553 | off = *offp; |
| 411e1bfb AM |
13554 | if ((off & 1) != 0) |
| 13555 | off &= ~1; | |
| 5bd4f169 AM |
13556 | else |
| 13557 | { | |
| 411e1bfb AM |
13558 | /* Generate relocs for the dynamic linker, except in |
| 13559 | the case of TLSLD where we'll use one entry per | |
| 13560 | module. */ | |
| 25f23106 AM |
13561 | asection *relgot; |
| 13562 | bfd_boolean ifunc; | |
| e717da7e | 13563 | |
| d881513a | 13564 | *offp = off | 1; |
| 25f23106 AM |
13565 | relgot = NULL; |
| 13566 | ifunc = (h != NULL | |
| 13567 | ? h->elf.type == STT_GNU_IFUNC | |
| 13568 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
| 19e08130 | 13569 | if (ifunc) |
| 25f23106 | 13570 | relgot = htab->reliplt; |
| 19e08130 AM |
13571 | else if ((info->shared || indx != 0) |
| 13572 | && (h == NULL | |
| 13573 | || (tls_type == (TLS_TLS | TLS_LD) | |
| 13574 | && !h->elf.def_dynamic) | |
| 13575 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
| 13576 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
| 13577 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
| 25f23106 | 13578 | if (relgot != NULL) |
| 5bd4f169 | 13579 | { |
| e717da7e AM |
13580 | outrel.r_offset = (got->output_section->vma |
| 13581 | + got->output_offset | |
| 411e1bfb | 13582 | + off); |
| 4cc603a5 | 13583 | outrel.r_addend = addend; |
| d881513a | 13584 | if (tls_type & (TLS_LD | TLS_GD)) |
| 5bd4f169 | 13585 | { |
| 411e1bfb | 13586 | outrel.r_addend = 0; |
| e515b051 | 13587 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
| d881513a AM |
13588 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 13589 | { | |
| e717da7e AM |
13590 | loc = relgot->contents; |
| 13591 | loc += (relgot->reloc_count++ | |
| d881513a AM |
13592 | * sizeof (Elf64_External_Rela)); |
| 13593 | bfd_elf64_swap_reloca_out (output_bfd, | |
| 13594 | &outrel, loc); | |
| e515b051 | 13595 | outrel.r_offset += 8; |
| 4cc603a5 | 13596 | outrel.r_addend = addend; |
| d881513a AM |
13597 | outrel.r_info |
| 13598 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
| d881513a | 13599 | } |
| 411e1bfb | 13600 | } |
| 951fd09b | 13601 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
| 411e1bfb | 13602 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
| 951fd09b | 13603 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 13604 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
| 25f23106 AM |
13605 | else if (indx != 0) |
| 13606 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
| 13607 | else | |
| 81407a69 | 13608 | { |
| 25f23106 AM |
13609 | if (ifunc) |
| 13610 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 13611 | else | |
| 13612 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 AM |
13613 | |
| 13614 | /* Write the .got section contents for the sake | |
| 13615 | of prelink. */ | |
| e717da7e | 13616 | loc = got->contents + off; |
| 23fbd6fa JJ |
13617 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
| 13618 | loc); | |
| 81407a69 | 13619 | } |
| 81407a69 AM |
13620 | |
| 13621 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
| e515b051 AM |
13622 | { |
| 13623 | outrel.r_addend += relocation; | |
| 13624 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
| e1918d23 | 13625 | outrel.r_addend -= htab->elf.tls_sec->vma; |
| e515b051 | 13626 | } |
| e717da7e AM |
13627 | loc = relgot->contents; |
| 13628 | loc += (relgot->reloc_count++ | |
| 411e1bfb AM |
13629 | * sizeof (Elf64_External_Rela)); |
| 13630 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
| 13631 | } | |
| 13632 | ||
| ad8e1ba5 | 13633 | /* Init the .got section contents here if we're not |
| 81407a69 | 13634 | emitting a reloc. */ |
| d881513a | 13635 | else |
| 411e1bfb | 13636 | { |
| 4cc603a5 | 13637 | relocation += addend; |
| 7b609f53 AM |
13638 | if (tls_type == (TLS_TLS | TLS_LD)) |
| 13639 | relocation = 1; | |
| 13640 | else if (tls_type != 0) | |
| 411e1bfb | 13641 | { |
| e1918d23 | 13642 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 7b609f53 | 13643 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 13644 | relocation += DTP_OFFSET - TP_OFFSET; |
| 5bd4f169 | 13645 | |
| 7b609f53 AM |
13646 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 13647 | { | |
| 13648 | bfd_put_64 (output_bfd, relocation, | |
| e717da7e | 13649 | got->contents + off + 8); |
| 7b609f53 AM |
13650 | relocation = 1; |
| 13651 | } | |
| 411e1bfb | 13652 | } |
| 7b609f53 | 13653 | |
| 411e1bfb | 13654 | bfd_put_64 (output_bfd, relocation, |
| e717da7e | 13655 | got->contents + off); |
| 5bd4f169 AM |
13656 | } |
| 13657 | } | |
| 13658 | ||
| 65f38f15 AM |
13659 | if (off >= (bfd_vma) -2) |
| 13660 | abort (); | |
| 13661 | ||
| bf102f86 AM |
13662 | relocation = got->output_section->vma + got->output_offset + off; |
| 13663 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
| 5bd4f169 | 13664 | } |
| 65f38f15 AM |
13665 | break; |
| 13666 | ||
| 13667 | case R_PPC64_PLT16_HA: | |
| 13668 | case R_PPC64_PLT16_HI: | |
| 13669 | case R_PPC64_PLT16_LO: | |
| 13670 | case R_PPC64_PLT32: | |
| 13671 | case R_PPC64_PLT64: | |
| 13672 | /* Relocation is to the entry for this symbol in the | |
| 13673 | procedure linkage table. */ | |
| 13674 | ||
| 13675 | /* Resolve a PLT reloc against a local symbol directly, | |
| 13676 | without using the procedure linkage table. */ | |
| 13677 | if (h == NULL) | |
| 13678 | break; | |
| 13679 | ||
| 411e1bfb AM |
13680 | /* It's possible that we didn't make a PLT entry for this |
| 13681 | symbol. This happens when statically linking PIC code, | |
| 13682 | or when using -Bsymbolic. Go find a match if there is a | |
| 13683 | PLT entry. */ | |
| 4ce794b7 | 13684 | if (htab->plt != NULL) |
| 65f38f15 | 13685 | { |
| 411e1bfb | 13686 | struct plt_entry *ent; |
| 039b3fef | 13687 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
| 31c76678 | 13688 | if (ent->addend == orig_rel.r_addend |
| 411e1bfb AM |
13689 | && ent->plt.offset != (bfd_vma) -1) |
| 13690 | { | |
| 4ce794b7 AM |
13691 | relocation = (htab->plt->output_section->vma |
| 13692 | + htab->plt->output_offset | |
| 411e1bfb AM |
13693 | + ent->plt.offset); |
| 13694 | unresolved_reloc = FALSE; | |
| 13695 | } | |
| 65f38f15 | 13696 | } |
| 65f38f15 | 13697 | break; |
| 5bd4f169 | 13698 | |
| 0b13192e AM |
13699 | case R_PPC64_TOC: |
| 13700 | /* Relocation value is TOC base. */ | |
| 13701 | relocation = TOCstart; | |
| cf35638d | 13702 | if (r_symndx == STN_UNDEF) |
| 0b13192e | 13703 | relocation += htab->stub_group[input_section->id].toc_off; |
| 8517fae7 AM |
13704 | else if (unresolved_reloc) |
| 13705 | ; | |
| 13706 | else if (sec != NULL && sec->id <= htab->top_id) | |
| 0b13192e AM |
13707 | relocation += htab->stub_group[sec->id].toc_off; |
| 13708 | else | |
| 13709 | unresolved_reloc = TRUE; | |
| ab96bf03 | 13710 | goto dodyn; |
| 0b13192e | 13711 | |
| 5bd4f169 AM |
13712 | /* TOC16 relocs. We want the offset relative to the TOC base, |
| 13713 | which is the address of the start of the TOC plus 0x8000. | |
| 13714 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
| 13715 | in this order. */ | |
| 65f38f15 AM |
13716 | case R_PPC64_TOC16: |
| 13717 | case R_PPC64_TOC16_LO: | |
| 13718 | case R_PPC64_TOC16_HI: | |
| 13719 | case R_PPC64_TOC16_DS: | |
| 13720 | case R_PPC64_TOC16_LO_DS: | |
| 13721 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 13722 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
| 5bd4f169 AM |
13723 | break; |
| 13724 | ||
| 13725 | /* Relocate against the beginning of the section. */ | |
| 65f38f15 AM |
13726 | case R_PPC64_SECTOFF: |
| 13727 | case R_PPC64_SECTOFF_LO: | |
| 13728 | case R_PPC64_SECTOFF_HI: | |
| 13729 | case R_PPC64_SECTOFF_DS: | |
| 13730 | case R_PPC64_SECTOFF_LO_DS: | |
| 13731 | case R_PPC64_SECTOFF_HA: | |
| 4ce794b7 | 13732 | if (sec != NULL) |
| 65f38f15 | 13733 | addend -= sec->output_section->vma; |
| 5bd4f169 AM |
13734 | break; |
| 13735 | ||
| 25f23106 AM |
13736 | case R_PPC64_REL16: |
| 13737 | case R_PPC64_REL16_LO: | |
| 13738 | case R_PPC64_REL16_HI: | |
| 13739 | case R_PPC64_REL16_HA: | |
| 13740 | break; | |
| 13741 | ||
| 721956f4 AM |
13742 | case R_PPC64_REL14: |
| 13743 | case R_PPC64_REL14_BRNTAKEN: | |
| 13744 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 AM |
13745 | case R_PPC64_REL24: |
| 13746 | break; | |
| 13747 | ||
| 411e1bfb AM |
13748 | case R_PPC64_TPREL16: |
| 13749 | case R_PPC64_TPREL16_LO: | |
| 13750 | case R_PPC64_TPREL16_HI: | |
| 13751 | case R_PPC64_TPREL16_HA: | |
| 13752 | case R_PPC64_TPREL16_DS: | |
| 13753 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
13754 | case R_PPC64_TPREL16_HIGH: |
| 13755 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
13756 | case R_PPC64_TPREL16_HIGHER: |
| 13757 | case R_PPC64_TPREL16_HIGHERA: | |
| 13758 | case R_PPC64_TPREL16_HIGHEST: | |
| 13759 | case R_PPC64_TPREL16_HIGHESTA: | |
| 766bc656 AM |
13760 | if (h != NULL |
| 13761 | && h->elf.root.type == bfd_link_hash_undefweak | |
| 13762 | && h->elf.dynindx == -1) | |
| 13763 | { | |
| 13764 | /* Make this relocation against an undefined weak symbol | |
| 13765 | resolve to zero. This is really just a tweak, since | |
| 13766 | code using weak externs ought to check that they are | |
| 13767 | defined before using them. */ | |
| 13768 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
| 13769 | ||
| 13770 | insn = bfd_get_32 (output_bfd, p); | |
| 13771 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
| 13772 | if (insn != 0) | |
| 13773 | bfd_put_32 (output_bfd, insn, p); | |
| 13774 | break; | |
| 13775 | } | |
| e1918d23 | 13776 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
13777 | if (info->shared) |
| 13778 | /* The TPREL16 relocs shouldn't really be used in shared | |
| 13779 | libs as they will result in DT_TEXTREL being set, but | |
| 13780 | support them anyway. */ | |
| 13781 | goto dodyn; | |
| 13782 | break; | |
| 13783 | ||
| 13784 | case R_PPC64_DTPREL16: | |
| 13785 | case R_PPC64_DTPREL16_LO: | |
| 13786 | case R_PPC64_DTPREL16_HI: | |
| 13787 | case R_PPC64_DTPREL16_HA: | |
| 13788 | case R_PPC64_DTPREL16_DS: | |
| 13789 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
13790 | case R_PPC64_DTPREL16_HIGH: |
| 13791 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
13792 | case R_PPC64_DTPREL16_HIGHER: |
| 13793 | case R_PPC64_DTPREL16_HIGHERA: | |
| 13794 | case R_PPC64_DTPREL16_HIGHEST: | |
| 13795 | case R_PPC64_DTPREL16_HIGHESTA: | |
| e1918d23 | 13796 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
13797 | break; |
| 13798 | ||
| e515b051 AM |
13799 | case R_PPC64_DTPMOD64: |
| 13800 | relocation = 1; | |
| 13801 | addend = 0; | |
| 13802 | goto dodyn; | |
| 13803 | ||
| 411e1bfb | 13804 | case R_PPC64_TPREL64: |
| e1918d23 | 13805 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
13806 | goto dodyn; |
| 13807 | ||
| 13808 | case R_PPC64_DTPREL64: | |
| e1918d23 | 13809 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
13810 | /* Fall thru */ |
| 13811 | ||
| 65f38f15 AM |
13812 | /* Relocations that may need to be propagated if this is a |
| 13813 | dynamic object. */ | |
| 04c9666a | 13814 | case R_PPC64_REL30: |
| 65f38f15 AM |
13815 | case R_PPC64_REL32: |
| 13816 | case R_PPC64_REL64: | |
| 13817 | case R_PPC64_ADDR14: | |
| 13818 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 13819 | case R_PPC64_ADDR14_BRTAKEN: | |
| 13820 | case R_PPC64_ADDR16: | |
| 13821 | case R_PPC64_ADDR16_DS: | |
| 13822 | case R_PPC64_ADDR16_HA: | |
| 13823 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
13824 | case R_PPC64_ADDR16_HIGH: |
| 13825 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
13826 | case R_PPC64_ADDR16_HIGHER: |
| 13827 | case R_PPC64_ADDR16_HIGHERA: | |
| 13828 | case R_PPC64_ADDR16_HIGHEST: | |
| 13829 | case R_PPC64_ADDR16_HIGHESTA: | |
| 13830 | case R_PPC64_ADDR16_LO: | |
| 13831 | case R_PPC64_ADDR16_LO_DS: | |
| 13832 | case R_PPC64_ADDR24: | |
| 65f38f15 AM |
13833 | case R_PPC64_ADDR32: |
| 13834 | case R_PPC64_ADDR64: | |
| 13835 | case R_PPC64_UADDR16: | |
| 13836 | case R_PPC64_UADDR32: | |
| 13837 | case R_PPC64_UADDR64: | |
| 411e1bfb | 13838 | dodyn: |
| 5d1634d7 | 13839 | if ((input_section->flags & SEC_ALLOC) == 0) |
| ec338859 AM |
13840 | break; |
| 13841 | ||
| 41bd81ab AM |
13842 | if (NO_OPD_RELOCS && is_opd) |
| 13843 | break; | |
| 13844 | ||
| 65f38f15 | 13845 | if ((info->shared |
| 4e795f50 | 13846 | && (h == NULL |
| 039b3fef AM |
13847 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
| 13848 | || h->elf.root.type != bfd_link_hash_undefweak) | |
| 1d483afe | 13849 | && (must_be_dyn_reloc (info, r_type) |
| 039b3fef | 13850 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
| f4656909 AM |
13851 | || (ELIMINATE_COPY_RELOCS |
| 13852 | && !info->shared | |
| 65f38f15 | 13853 | && h != NULL |
| 039b3fef | 13854 | && h->elf.dynindx != -1 |
| f5385ebf | 13855 | && !h->elf.non_got_ref |
| 25f23106 AM |
13856 | && !h->elf.def_regular) |
| 13857 | || (!info->shared | |
| 13858 | && (h != NULL | |
| 13859 | ? h->elf.type == STT_GNU_IFUNC | |
| 13860 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
| 65f38f15 | 13861 | { |
| b34976b6 | 13862 | bfd_boolean skip, relocate; |
| 65f38f15 | 13863 | asection *sreloc; |
| 1cf1f670 | 13864 | bfd_vma out_off; |
| 65f38f15 AM |
13865 | |
| 13866 | /* When generating a dynamic object, these relocations | |
| 13867 | are copied into the output file to be resolved at run | |
| 13868 | time. */ | |
| 13869 | ||
| b34976b6 AM |
13870 | skip = FALSE; |
| 13871 | relocate = FALSE; | |
| 65f38f15 | 13872 | |
| 1cf1f670 AM |
13873 | out_off = _bfd_elf_section_offset (output_bfd, info, |
| 13874 | input_section, rel->r_offset); | |
| 13875 | if (out_off == (bfd_vma) -1) | |
| b34976b6 | 13876 | skip = TRUE; |
| 1cf1f670 | 13877 | else if (out_off == (bfd_vma) -2) |
| b34976b6 | 13878 | skip = TRUE, relocate = TRUE; |
| 1cf1f670 AM |
13879 | out_off += (input_section->output_section->vma |
| 13880 | + input_section->output_offset); | |
| 13881 | outrel.r_offset = out_off; | |
| 411e1bfb | 13882 | outrel.r_addend = rel->r_addend; |
| 65f38f15 | 13883 | |
| 1cf1f670 AM |
13884 | /* Optimize unaligned reloc use. */ |
| 13885 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
| 13886 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
| 13887 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
| 13888 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
| 13889 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
| 13890 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
| 13891 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
| 13892 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
| 13893 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
| 13894 | ||
| 65f38f15 | 13895 | if (skip) |
| 0bb2d96a | 13896 | memset (&outrel, 0, sizeof outrel); |
| 726d3ab0 | 13897 | else if (!SYMBOL_CALLS_LOCAL (info, &h->elf) |
| 0b13192e AM |
13898 | && !is_opd |
| 13899 | && r_type != R_PPC64_TOC) | |
| 14acf4dc MR |
13900 | { |
| 13901 | BFD_ASSERT (h->elf.dynindx != -1); | |
| 13902 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
| 13903 | } | |
| 65f38f15 AM |
13904 | else |
| 13905 | { | |
| 41bd81ab AM |
13906 | /* This symbol is local, or marked to become local, |
| 13907 | or this is an opd section reloc which must point | |
| 13908 | at a local function. */ | |
| 65f38f15 | 13909 | outrel.r_addend += relocation; |
| e86ce104 | 13910 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
| 65f38f15 | 13911 | { |
| 3fad3c7c | 13912 | if (is_opd && h != NULL) |
| afbe61cf AM |
13913 | { |
| 13914 | /* Lie about opd entries. This case occurs | |
| 13915 | when building shared libraries and we | |
| 13916 | reference a function in another shared | |
| 3fad3c7c AM |
13917 | lib. The same thing happens for a weak |
| 13918 | definition in an application that's | |
| 13919 | overridden by a strong definition in a | |
| 13920 | shared lib. (I believe this is a generic | |
| 13921 | bug in binutils handling of weak syms.) | |
| 13922 | In these cases we won't use the opd | |
| 1e2f5b6e | 13923 | entry in this lib. */ |
| b34976b6 | 13924 | unresolved_reloc = FALSE; |
| afbe61cf | 13925 | } |
| 25f23106 AM |
13926 | if (!is_opd |
| 13927 | && r_type == R_PPC64_ADDR64 | |
| 13928 | && (h != NULL | |
| 13929 | ? h->elf.type == STT_GNU_IFUNC | |
| 13930 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
| 13931 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 13932 | else | |
| 13933 | { | |
| 13934 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 | 13935 | |
| 25f23106 AM |
13936 | /* We need to relocate .opd contents for ld.so. |
| 13937 | Prelink also wants simple and consistent rules | |
| 13938 | for relocs. This make all RELATIVE relocs have | |
| 13939 | *r_offset equal to r_addend. */ | |
| 13940 | relocate = TRUE; | |
| 13941 | } | |
| 65f38f15 AM |
13942 | } |
| 13943 | else | |
| 13944 | { | |
| 13945 | long indx = 0; | |
| 13946 | ||
| 25f23106 AM |
13947 | if (h != NULL |
| 13948 | ? h->elf.type == STT_GNU_IFUNC | |
| 13949 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 13950 | { | |
| 25f53a85 | 13951 | info->callbacks->einfo |
| bc30df16 AM |
13952 | (_("%P: %H: %s for indirect " |
| 13953 | "function `%T' unsupported\n"), | |
| 25f53a85 | 13954 | input_bfd, input_section, rel->r_offset, |
| 25f23106 AM |
13955 | ppc64_elf_howto_table[r_type]->name, |
| 13956 | sym_name); | |
| 13957 | ret = FALSE; | |
| 13958 | } | |
| cf35638d | 13959 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
| 65f38f15 AM |
13960 | ; |
| 13961 | else if (sec == NULL || sec->owner == NULL) | |
| 13962 | { | |
| 13963 | bfd_set_error (bfd_error_bad_value); | |
| b34976b6 | 13964 | return FALSE; |
| 65f38f15 AM |
13965 | } |
| 13966 | else | |
| 13967 | { | |
| 13968 | asection *osec; | |
| 13969 | ||
| 13970 | osec = sec->output_section; | |
| 13971 | indx = elf_section_data (osec)->dynindx; | |
| 13972 | ||
| 74541ad4 AM |
13973 | if (indx == 0) |
| 13974 | { | |
| 13975 | if ((osec->flags & SEC_READONLY) == 0 | |
| 13976 | && htab->elf.data_index_section != NULL) | |
| 13977 | osec = htab->elf.data_index_section; | |
| 13978 | else | |
| 13979 | osec = htab->elf.text_index_section; | |
| 13980 | indx = elf_section_data (osec)->dynindx; | |
| 13981 | } | |
| 13982 | BFD_ASSERT (indx != 0); | |
| 13983 | ||
| 65f38f15 AM |
13984 | /* We are turning this relocation into one |
| 13985 | against a section symbol, so subtract out | |
| 13986 | the output section's address but not the | |
| 13987 | offset of the input section in the output | |
| 13988 | section. */ | |
| 13989 | outrel.r_addend -= osec->vma; | |
| 13990 | } | |
| 13991 | ||
| 13992 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
| 13993 | } | |
| 13994 | } | |
| 13995 | ||
| 13996 | sreloc = elf_section_data (input_section)->sreloc; | |
| 19e08130 AM |
13997 | if (h != NULL |
| 13998 | ? h->elf.type == STT_GNU_IFUNC | |
| 13999 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 25f23106 | 14000 | sreloc = htab->reliplt; |
| 65f38f15 AM |
14001 | if (sreloc == NULL) |
| 14002 | abort (); | |
| 14003 | ||
| dfbb6ac9 AM |
14004 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
| 14005 | >= sreloc->size) | |
| 14006 | abort (); | |
| 947216bf AM |
14007 | loc = sreloc->contents; |
| 14008 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 AM |
14009 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
| 14010 | ||
| 14011 | /* If this reloc is against an external symbol, it will | |
| 14012 | be computed at runtime, so there's no need to do | |
| 81407a69 AM |
14013 | anything now. However, for the sake of prelink ensure |
| 14014 | that the section contents are a known value. */ | |
| 65f38f15 | 14015 | if (! relocate) |
| 81407a69 AM |
14016 | { |
| 14017 | unresolved_reloc = FALSE; | |
| 14018 | /* The value chosen here is quite arbitrary as ld.so | |
| 14019 | ignores section contents except for the special | |
| 14020 | case of .opd where the contents might be accessed | |
| 14021 | before relocation. Choose zero, as that won't | |
| 14022 | cause reloc overflow. */ | |
| 14023 | relocation = 0; | |
| 14024 | addend = 0; | |
| 14025 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
| 14026 | to improve backward compatibility with older | |
| 14027 | versions of ld. */ | |
| 14028 | if (r_type == R_PPC64_ADDR64) | |
| 14029 | addend = outrel.r_addend; | |
| 14030 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
| 4ce794b7 | 14031 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
| 000732f7 AM |
14032 | addend = (input_section->output_section->vma |
| 14033 | + input_section->output_offset | |
| 14034 | + rel->r_offset); | |
| 81407a69 | 14035 | } |
| 65f38f15 | 14036 | } |
| 5bd4f169 AM |
14037 | break; |
| 14038 | ||
| 65f38f15 AM |
14039 | case R_PPC64_COPY: |
| 14040 | case R_PPC64_GLOB_DAT: | |
| 14041 | case R_PPC64_JMP_SLOT: | |
| 25f23106 | 14042 | case R_PPC64_JMP_IREL: |
| 65f38f15 AM |
14043 | case R_PPC64_RELATIVE: |
| 14044 | /* We shouldn't ever see these dynamic relocs in relocatable | |
| 14045 | files. */ | |
| ae9a127f | 14046 | /* Fall through. */ |
| 65f38f15 AM |
14047 | |
| 14048 | case R_PPC64_PLTGOT16: | |
| 14049 | case R_PPC64_PLTGOT16_DS: | |
| 14050 | case R_PPC64_PLTGOT16_HA: | |
| 14051 | case R_PPC64_PLTGOT16_HI: | |
| 14052 | case R_PPC64_PLTGOT16_LO: | |
| 14053 | case R_PPC64_PLTGOT16_LO_DS: | |
| 14054 | case R_PPC64_PLTREL32: | |
| 14055 | case R_PPC64_PLTREL64: | |
| 14056 | /* These ones haven't been implemented yet. */ | |
| 14057 | ||
| 25f53a85 | 14058 | info->callbacks->einfo |
| bc30df16 | 14059 | (_("%P: %B: %s is not supported for `%T'\n"), |
| d003868e | 14060 | input_bfd, |
| 4ce794b7 | 14061 | ppc64_elf_howto_table[r_type]->name, sym_name); |
| 5bd4f169 AM |
14062 | |
| 14063 | bfd_set_error (bfd_error_invalid_operation); | |
| b34976b6 | 14064 | ret = FALSE; |
| 5bd4f169 | 14065 | continue; |
| 65f38f15 | 14066 | } |
| 5bd4f169 | 14067 | |
| 67f0cbdb AM |
14068 | /* Multi-instruction sequences that access the TOC can be |
| 14069 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
| 14070 | to nop; addi rb,r2,x; */ | |
| 14071 | switch (r_type) | |
| 14072 | { | |
| 14073 | default: | |
| 14074 | break; | |
| 14075 | ||
| 14076 | case R_PPC64_GOT_TLSLD16_HI: | |
| 14077 | case R_PPC64_GOT_TLSGD16_HI: | |
| 14078 | case R_PPC64_GOT_TPREL16_HI: | |
| 14079 | case R_PPC64_GOT_DTPREL16_HI: | |
| 14080 | case R_PPC64_GOT16_HI: | |
| 14081 | case R_PPC64_TOC16_HI: | |
| 14082 | /* These relocs would only be useful if building up an | |
| 14083 | offset to later add to r2, perhaps in an indexed | |
| 14084 | addressing mode instruction. Don't try to optimize. | |
| 14085 | Unfortunately, the possibility of someone building up an | |
| 14086 | offset like this or even with the HA relocs, means that | |
| 14087 | we need to check the high insn when optimizing the low | |
| 14088 | insn. */ | |
| 14089 | break; | |
| 14090 | ||
| 14091 | case R_PPC64_GOT_TLSLD16_HA: | |
| 14092 | case R_PPC64_GOT_TLSGD16_HA: | |
| 14093 | case R_PPC64_GOT_TPREL16_HA: | |
| 14094 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14095 | case R_PPC64_GOT16_HA: | |
| 14096 | case R_PPC64_TOC16_HA: | |
| 98528052 | 14097 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 14098 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 98528052 AM |
14099 | { |
| 14100 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 14101 | bfd_put_32 (input_bfd, NOP, p); | |
| 14102 | } | |
| 67f0cbdb AM |
14103 | break; |
| 14104 | ||
| 14105 | case R_PPC64_GOT_TLSLD16_LO: | |
| 14106 | case R_PPC64_GOT_TLSGD16_LO: | |
| 14107 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14108 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14109 | case R_PPC64_GOT16_LO: | |
| 14110 | case R_PPC64_GOT16_LO_DS: | |
| 14111 | case R_PPC64_TOC16_LO: | |
| 14112 | case R_PPC64_TOC16_LO_DS: | |
| 98528052 | 14113 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 14114 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 67f0cbdb AM |
14115 | { |
| 14116 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 14117 | insn = bfd_get_32 (input_bfd, p); | |
| 560c8763 AM |
14118 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
| 14119 | { | |
| 14120 | /* Transform addic to addi when we change reg. */ | |
| 14121 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
| 14122 | insn |= (14u << 26) | (2 << 16); | |
| 14123 | } | |
| 14124 | else | |
| 67f0cbdb | 14125 | { |
| 98528052 AM |
14126 | insn &= ~(0x1f << 16); |
| 14127 | insn |= 2 << 16; | |
| 67f0cbdb | 14128 | } |
| 560c8763 | 14129 | bfd_put_32 (input_bfd, insn, p); |
| 67f0cbdb AM |
14130 | } |
| 14131 | break; | |
| 14132 | } | |
| 14133 | ||
| 65f38f15 AM |
14134 | /* Do any further special processing. */ |
| 14135 | switch (r_type) | |
| 14136 | { | |
| 14137 | default: | |
| 14138 | break; | |
| 14139 | ||
| 25f23106 | 14140 | case R_PPC64_REL16_HA: |
| f9c6b907 AM |
14141 | case R_PPC64_ADDR16_HA: |
| 14142 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
14143 | case R_PPC64_ADDR16_HIGHERA: |
| 14144 | case R_PPC64_ADDR16_HIGHESTA: | |
| 65f38f15 AM |
14145 | case R_PPC64_TOC16_HA: |
| 14146 | case R_PPC64_SECTOFF_HA: | |
| 411e1bfb | 14147 | case R_PPC64_TPREL16_HA: |
| f9c6b907 | 14148 | case R_PPC64_TPREL16_HIGHA: |
| 411e1bfb | 14149 | case R_PPC64_TPREL16_HIGHERA: |
| 411e1bfb | 14150 | case R_PPC64_TPREL16_HIGHESTA: |
| f9c6b907 AM |
14151 | case R_PPC64_DTPREL16_HA: |
| 14152 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb | 14153 | case R_PPC64_DTPREL16_HIGHERA: |
| 411e1bfb | 14154 | case R_PPC64_DTPREL16_HIGHESTA: |
| 65f38f15 AM |
14155 | /* It's just possible that this symbol is a weak symbol |
| 14156 | that's not actually defined anywhere. In that case, | |
| 14157 | 'sec' would be NULL, and we should leave the symbol | |
| 14158 | alone (it will be set to zero elsewhere in the link). */ | |
| 5c5f6e17 AM |
14159 | if (sec == NULL) |
| 14160 | break; | |
| 14161 | /* Fall thru */ | |
| 14162 | ||
| 14163 | case R_PPC64_GOT16_HA: | |
| 14164 | case R_PPC64_PLTGOT16_HA: | |
| 14165 | case R_PPC64_PLT16_HA: | |
| 14166 | case R_PPC64_GOT_TLSGD16_HA: | |
| 14167 | case R_PPC64_GOT_TLSLD16_HA: | |
| 14168 | case R_PPC64_GOT_TPREL16_HA: | |
| 14169 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14170 | /* Add 0x10000 if sign bit in 0:15 is set. | |
| 14171 | Bits 0:15 are not used. */ | |
| 14172 | addend += 0x8000; | |
| 65f38f15 AM |
14173 | break; |
| 14174 | ||
| 14175 | case R_PPC64_ADDR16_DS: | |
| 14176 | case R_PPC64_ADDR16_LO_DS: | |
| 14177 | case R_PPC64_GOT16_DS: | |
| 14178 | case R_PPC64_GOT16_LO_DS: | |
| 14179 | case R_PPC64_PLT16_LO_DS: | |
| 14180 | case R_PPC64_SECTOFF_DS: | |
| 14181 | case R_PPC64_SECTOFF_LO_DS: | |
| 14182 | case R_PPC64_TOC16_DS: | |
| 14183 | case R_PPC64_TOC16_LO_DS: | |
| 14184 | case R_PPC64_PLTGOT16_DS: | |
| 14185 | case R_PPC64_PLTGOT16_LO_DS: | |
| 411e1bfb AM |
14186 | case R_PPC64_GOT_TPREL16_DS: |
| 14187 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14188 | case R_PPC64_GOT_DTPREL16_DS: | |
| 14189 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14190 | case R_PPC64_TPREL16_DS: | |
| 14191 | case R_PPC64_TPREL16_LO_DS: | |
| 14192 | case R_PPC64_DTPREL16_DS: | |
| 14193 | case R_PPC64_DTPREL16_LO_DS: | |
| adadcc0c AM |
14194 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
| 14195 | mask = 3; | |
| 14196 | /* If this reloc is against an lq insn, then the value must be | |
| 14197 | a multiple of 16. This is somewhat of a hack, but the | |
| 14198 | "correct" way to do this by defining _DQ forms of all the | |
| 14199 | _DS relocs bloats all reloc switches in this file. It | |
| 14200 | doesn't seem to make much sense to use any of these relocs | |
| 14201 | in data, so testing the insn should be safe. */ | |
| 494dac0c | 14202 | if ((insn & (0x3f << 26)) == (56u << 26)) |
| adadcc0c AM |
14203 | mask = 15; |
| 14204 | if (((relocation + addend) & mask) != 0) | |
| 65f38f15 | 14205 | { |
| 25f53a85 | 14206 | info->callbacks->einfo |
| 8de848d8 | 14207 | (_("%P: %H: error: %s not a multiple of %u\n"), |
| 25f53a85 | 14208 | input_bfd, input_section, rel->r_offset, |
| 4ce794b7 | 14209 | ppc64_elf_howto_table[r_type]->name, |
| adadcc0c | 14210 | mask + 1); |
| 65f38f15 | 14211 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 14212 | ret = FALSE; |
| 65f38f15 AM |
14213 | continue; |
| 14214 | } | |
| 14215 | break; | |
| 5bd4f169 AM |
14216 | } |
| 14217 | ||
| 239e1f3a AM |
14218 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 14219 | because such sections are not SEC_ALLOC and thus ld.so will | |
| 14220 | not process them. */ | |
| 65f38f15 | 14221 | if (unresolved_reloc |
| 239e1f3a | 14222 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 1d5316ab AM |
14223 | && h->elf.def_dynamic) |
| 14224 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
| 14225 | rel->r_offset) != (bfd_vma) -1) | |
| 9c07fe7c | 14226 | { |
| 25f53a85 | 14227 | info->callbacks->einfo |
| bc30df16 | 14228 | (_("%P: %H: unresolvable %s against `%T'\n"), |
| 25f53a85 | 14229 | input_bfd, input_section, rel->r_offset, |
| 7b609f53 | 14230 | ppc64_elf_howto_table[(int) r_type]->name, |
| 039b3fef | 14231 | h->elf.root.root.string); |
| b34976b6 | 14232 | ret = FALSE; |
| 9c07fe7c | 14233 | } |
| 5bd4f169 | 14234 | |
| 65f38f15 | 14235 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
| 5bd4f169 AM |
14236 | input_bfd, |
| 14237 | input_section, | |
| 14238 | contents, | |
| 411e1bfb | 14239 | rel->r_offset, |
| 5bd4f169 AM |
14240 | relocation, |
| 14241 | addend); | |
| 14242 | ||
| ef60b7ff | 14243 | if (r != bfd_reloc_ok) |
| 5bd4f169 | 14244 | { |
| bc30df16 AM |
14245 | char *more_info = NULL; |
| 14246 | const char *reloc_name = ppc64_elf_howto_table[r_type]->name; | |
| 14247 | ||
| 14248 | if (reloc_dest != DEST_NORMAL) | |
| 14249 | { | |
| 14250 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
| 14251 | if (more_info != NULL) | |
| 14252 | { | |
| 14253 | strcpy (more_info, reloc_name); | |
| 14254 | strcat (more_info, (reloc_dest == DEST_OPD | |
| 14255 | ? " (OPD)" : " (stub)")); | |
| 14256 | reloc_name = more_info; | |
| 14257 | } | |
| 14258 | } | |
| 14259 | ||
| cd27b276 | 14260 | if (r == bfd_reloc_overflow) |
| 5bd4f169 | 14261 | { |
| cd27b276 AM |
14262 | if (warned) |
| 14263 | continue; | |
| 14264 | if (h != NULL | |
| 039b3fef | 14265 | && h->elf.root.type == bfd_link_hash_undefweak |
| 4ce794b7 | 14266 | && ppc64_elf_howto_table[r_type]->pc_relative) |
| 5bd4f169 AM |
14267 | { |
| 14268 | /* Assume this is a call protected by other code that | |
| 14269 | detects the symbol is undefined. If this is the case, | |
| 14270 | we can safely ignore the overflow. If not, the | |
| 14271 | program is hosed anyway, and a little warning isn't | |
| 14272 | going to help. */ | |
| 14273 | ||
| 14274 | continue; | |
| 14275 | } | |
| 14276 | ||
| ef60b7ff | 14277 | if (!((*info->callbacks->reloc_overflow) |
| bc30df16 AM |
14278 | (info, &h->elf.root, sym_name, |
| 14279 | reloc_name, orig_rel.r_addend, | |
| 14280 | input_bfd, input_section, rel->r_offset))) | |
| b34976b6 | 14281 | return FALSE; |
| ef60b7ff AM |
14282 | } |
| 14283 | else | |
| 14284 | { | |
| 25f53a85 | 14285 | info->callbacks->einfo |
| bc30df16 | 14286 | (_("%P: %H: %s against `%T': error %d\n"), |
| 25f53a85 | 14287 | input_bfd, input_section, rel->r_offset, |
| bc30df16 | 14288 | reloc_name, sym_name, (int) r); |
| b34976b6 | 14289 | ret = FALSE; |
| ef60b7ff | 14290 | } |
| bc30df16 AM |
14291 | if (more_info != NULL) |
| 14292 | free (more_info); | |
| 5bd4f169 | 14293 | } |
| 5bd4f169 AM |
14294 | } |
| 14295 | ||
| 645ea6a9 AM |
14296 | /* If we're emitting relocations, then shortly after this function |
| 14297 | returns, reloc offsets and addends for this section will be | |
| 14298 | adjusted. Worse, reloc symbol indices will be for the output | |
| 8860955f AM |
14299 | file rather than the input. Save a copy of the relocs for |
| 14300 | opd_entry_value. */ | |
| 4cc603a5 | 14301 | if (is_opd && (info->emitrelocations || info->relocatable)) |
| 8860955f AM |
14302 | { |
| 14303 | bfd_size_type amt; | |
| 14304 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
| 14305 | rel = bfd_alloc (input_bfd, amt); | |
| 729eabd5 AM |
14306 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
| 14307 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
| 8860955f AM |
14308 | if (rel == NULL) |
| 14309 | return FALSE; | |
| 14310 | memcpy (rel, relocs, amt); | |
| 14311 | } | |
| 5bd4f169 AM |
14312 | return ret; |
| 14313 | } | |
| 14314 | ||
| 754021d0 AM |
14315 | /* Adjust the value of any local symbols in opd sections. */ |
| 14316 | ||
| 6e0b88f1 | 14317 | static int |
| 754021d0 AM |
14318 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
| 14319 | const char *name ATTRIBUTE_UNUSED, | |
| 14320 | Elf_Internal_Sym *elfsym, | |
| 14321 | asection *input_sec, | |
| 14322 | struct elf_link_hash_entry *h) | |
| 14323 | { | |
| 74f0fb50 AM |
14324 | struct _opd_sec_data *opd; |
| 14325 | long adjust; | |
| 754021d0 AM |
14326 | bfd_vma value; |
| 14327 | ||
| 4025353c | 14328 | if (h != NULL) |
| 6e0b88f1 | 14329 | return 1; |
| 4025353c | 14330 | |
| 74f0fb50 AM |
14331 | opd = get_opd_info (input_sec); |
| 14332 | if (opd == NULL || opd->adjust == NULL) | |
| 6e0b88f1 | 14333 | return 1; |
| 754021d0 AM |
14334 | |
| 14335 | value = elfsym->st_value - input_sec->output_offset; | |
| 14336 | if (!info->relocatable) | |
| 14337 | value -= input_sec->output_section->vma; | |
| 14338 | ||
| 74f0fb50 | 14339 | adjust = opd->adjust[value / 8]; |
| 4025353c | 14340 | if (adjust == -1) |
| 6e0b88f1 AM |
14341 | return 2; |
| 14342 | ||
| 14343 | elfsym->st_value += adjust; | |
| 14344 | return 1; | |
| 754021d0 AM |
14345 | } |
| 14346 | ||
| 5bd4f169 AM |
14347 | /* Finish up dynamic symbol handling. We set the contents of various |
| 14348 | dynamic sections here. */ | |
| 14349 | ||
| b34976b6 | 14350 | static bfd_boolean |
| 4ce794b7 AM |
14351 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 14352 | struct bfd_link_info *info, | |
| 14353 | struct elf_link_hash_entry *h, | |
| ab6dce23 | 14354 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
| 5bd4f169 | 14355 | { |
| 65f38f15 | 14356 | struct ppc_link_hash_table *htab; |
| 8387904d AM |
14357 | struct plt_entry *ent; |
| 14358 | Elf_Internal_Rela rela; | |
| 14359 | bfd_byte *loc; | |
| 5bd4f169 | 14360 | |
| 65f38f15 | 14361 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
14362 | if (htab == NULL) |
| 14363 | return FALSE; | |
| 5bd4f169 | 14364 | |
| 8387904d AM |
14365 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 14366 | if (ent->plt.offset != (bfd_vma) -1) | |
| 14367 | { | |
| 14368 | /* This symbol has an entry in the procedure linkage | |
| 14369 | table. Set it up. */ | |
| e054468f AM |
14370 | if (!htab->elf.dynamic_sections_created |
| 14371 | || h->dynindx == -1) | |
| 14372 | { | |
| 14373 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
| 14374 | && h->def_regular | |
| 14375 | && (h->root.type == bfd_link_hash_defined | |
| 14376 | || h->root.type == bfd_link_hash_defweak)); | |
| 25f23106 AM |
14377 | rela.r_offset = (htab->iplt->output_section->vma |
| 14378 | + htab->iplt->output_offset | |
| 14379 | + ent->plt.offset); | |
| ee67d69a AM |
14380 | if (htab->opd_abi) |
| 14381 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 14382 | else | |
| 14383 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
14384 | rela.r_addend = (h->root.u.def.value |
| 14385 | + h->root.u.def.section->output_offset | |
| 14386 | + h->root.u.def.section->output_section->vma | |
| 14387 | + ent->addend); | |
| 25f23106 AM |
14388 | loc = (htab->reliplt->contents |
| 14389 | + (htab->reliplt->reloc_count++ | |
| 14390 | * sizeof (Elf64_External_Rela))); | |
| e054468f AM |
14391 | } |
| 14392 | else | |
| 14393 | { | |
| 25f23106 AM |
14394 | rela.r_offset = (htab->plt->output_section->vma |
| 14395 | + htab->plt->output_offset | |
| 14396 | + ent->plt.offset); | |
| e054468f AM |
14397 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
| 14398 | rela.r_addend = ent->addend; | |
| 25f23106 AM |
14399 | loc = (htab->relplt->contents |
| 14400 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
| 14401 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
| e054468f | 14402 | } |
| 8387904d AM |
14403 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 14404 | } | |
| 5bd4f169 | 14405 | |
| f5385ebf | 14406 | if (h->needs_copy) |
| 5bd4f169 | 14407 | { |
| 65f38f15 | 14408 | /* This symbol needs a copy reloc. Set it up. */ |
| 5bd4f169 | 14409 | |
| 65f38f15 AM |
14410 | if (h->dynindx == -1 |
| 14411 | || (h->root.type != bfd_link_hash_defined | |
| 14412 | && h->root.type != bfd_link_hash_defweak) | |
| 4ce794b7 | 14413 | || htab->relbss == NULL) |
| 65f38f15 | 14414 | abort (); |
| 5bd4f169 AM |
14415 | |
| 14416 | rela.r_offset = (h->root.u.def.value | |
| 14417 | + h->root.u.def.section->output_section->vma | |
| 14418 | + h->root.u.def.section->output_offset); | |
| 14419 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
| 14420 | rela.r_addend = 0; | |
| 4ce794b7 AM |
14421 | loc = htab->relbss->contents; |
| 14422 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 | 14423 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 5bd4f169 AM |
14424 | } |
| 14425 | ||
| b34976b6 | 14426 | return TRUE; |
| 5bd4f169 AM |
14427 | } |
| 14428 | ||
| 65f38f15 AM |
14429 | /* Used to decide how to sort relocs in an optimal manner for the |
| 14430 | dynamic linker, before writing them out. */ | |
| 14431 | ||
| 14432 | static enum elf_reloc_type_class | |
| 7e612e98 AM |
14433 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
| 14434 | const asection *rel_sec, | |
| 14435 | const Elf_Internal_Rela *rela) | |
| 65f38f15 | 14436 | { |
| 04c9666a | 14437 | enum elf_ppc64_reloc_type r_type; |
| 7e612e98 AM |
14438 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 14439 | ||
| 14440 | if (rel_sec == htab->reliplt) | |
| 14441 | return reloc_class_ifunc; | |
| a33d1f77 | 14442 | |
| 4ce794b7 | 14443 | r_type = ELF64_R_TYPE (rela->r_info); |
| a33d1f77 | 14444 | switch (r_type) |
| 65f38f15 AM |
14445 | { |
| 14446 | case R_PPC64_RELATIVE: | |
| 14447 | return reloc_class_relative; | |
| 14448 | case R_PPC64_JMP_SLOT: | |
| 14449 | return reloc_class_plt; | |
| 14450 | case R_PPC64_COPY: | |
| 14451 | return reloc_class_copy; | |
| 14452 | default: | |
| 14453 | return reloc_class_normal; | |
| 14454 | } | |
| 14455 | } | |
| 14456 | ||
| 5bd4f169 AM |
14457 | /* Finish up the dynamic sections. */ |
| 14458 | ||
| b34976b6 | 14459 | static bfd_boolean |
| 4ce794b7 AM |
14460 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
| 14461 | struct bfd_link_info *info) | |
| 5bd4f169 | 14462 | { |
| 65f38f15 AM |
14463 | struct ppc_link_hash_table *htab; |
| 14464 | bfd *dynobj; | |
| 5bd4f169 | 14465 | asection *sdyn; |
| 5bd4f169 | 14466 | |
| 65f38f15 | 14467 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
14468 | if (htab == NULL) |
| 14469 | return FALSE; | |
| 14470 | ||
| 65f38f15 | 14471 | dynobj = htab->elf.dynobj; |
| 3d4d4302 | 14472 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 5bd4f169 | 14473 | |
| 65f38f15 | 14474 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 14475 | { |
| 5bd4f169 AM |
14476 | Elf64_External_Dyn *dyncon, *dynconend; |
| 14477 | ||
| 4ce794b7 | 14478 | if (sdyn == NULL || htab->got == NULL) |
| 65f38f15 | 14479 | abort (); |
| 5bd4f169 AM |
14480 | |
| 14481 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
| eea6121a | 14482 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5bd4f169 AM |
14483 | for (; dyncon < dynconend; dyncon++) |
| 14484 | { | |
| 14485 | Elf_Internal_Dyn dyn; | |
| 19397422 | 14486 | asection *s; |
| 5bd4f169 AM |
14487 | |
| 14488 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
| 14489 | ||
| 14490 | switch (dyn.d_tag) | |
| 14491 | { | |
| 65f38f15 AM |
14492 | default: |
| 14493 | continue; | |
| 5bd4f169 | 14494 | |
| 5d1634d7 | 14495 | case DT_PPC64_GLINK: |
| 4ce794b7 | 14496 | s = htab->glink; |
| 6348e046 | 14497 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| ad8e1ba5 AM |
14498 | /* We stupidly defined DT_PPC64_GLINK to be the start |
| 14499 | of glink rather than the first entry point, which is | |
| 14500 | what ld.so needs, and now have a bigger stub to | |
| 14501 | support automatic multiple TOCs. */ | |
| 14502 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
| 5d1634d7 AM |
14503 | break; |
| 14504 | ||
| 19397422 AM |
14505 | case DT_PPC64_OPD: |
| 14506 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
14507 | if (s == NULL) |
| 14508 | continue; | |
| 14509 | dyn.d_un.d_ptr = s->vma; | |
| 19397422 AM |
14510 | break; |
| 14511 | ||
| 14512 | case DT_PPC64_OPDSZ: | |
| 14513 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
14514 | if (s == NULL) |
| 14515 | continue; | |
| eea6121a | 14516 | dyn.d_un.d_val = s->size; |
| 19397422 AM |
14517 | break; |
| 14518 | ||
| 65f38f15 | 14519 | case DT_PLTGOT: |
| 4ce794b7 | 14520 | s = htab->plt; |
| 6348e046 | 14521 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 AM |
14522 | break; |
| 14523 | ||
| 14524 | case DT_JMPREL: | |
| 4ce794b7 | 14525 | s = htab->relplt; |
| 6348e046 | 14526 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 | 14527 | break; |
| 5bd4f169 | 14528 | |
| 65f38f15 | 14529 | case DT_PLTRELSZ: |
| eea6121a | 14530 | dyn.d_un.d_val = htab->relplt->size; |
| 5d1634d7 AM |
14531 | break; |
| 14532 | ||
| 14533 | case DT_RELASZ: | |
| 14534 | /* Don't count procedure linkage table relocs in the | |
| 14535 | overall reloc count. */ | |
| 4ce794b7 | 14536 | s = htab->relplt; |
| 6348e046 AM |
14537 | if (s == NULL) |
| 14538 | continue; | |
| eea6121a | 14539 | dyn.d_un.d_val -= s->size; |
| 6348e046 AM |
14540 | break; |
| 14541 | ||
| 14542 | case DT_RELA: | |
| 14543 | /* We may not be using the standard ELF linker script. | |
| 14544 | If .rela.plt is the first .rela section, we adjust | |
| 14545 | DT_RELA to not include it. */ | |
| 4ce794b7 | 14546 | s = htab->relplt; |
| 6348e046 AM |
14547 | if (s == NULL) |
| 14548 | continue; | |
| 14549 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
| 14550 | continue; | |
| eea6121a | 14551 | dyn.d_un.d_ptr += s->size; |
| 65f38f15 | 14552 | break; |
| 5bd4f169 | 14553 | } |
| 5bd4f169 | 14554 | |
| 65f38f15 | 14555 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5bd4f169 | 14556 | } |
| 5bd4f169 AM |
14557 | } |
| 14558 | ||
| eea6121a | 14559 | if (htab->got != NULL && htab->got->size != 0) |
| 5d1634d7 AM |
14560 | { |
| 14561 | /* Fill in the first entry in the global offset table. | |
| 14562 | We use it to hold the link-time TOCbase. */ | |
| 14563 | bfd_put_64 (output_bfd, | |
| 60ee0d4a | 14564 | elf_gp (output_bfd) + TOC_BASE_OFF, |
| 4ce794b7 | 14565 | htab->got->contents); |
| 5d1634d7 AM |
14566 | |
| 14567 | /* Set .got entry size. */ | |
| 4ce794b7 | 14568 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
| 5d1634d7 AM |
14569 | } |
| 14570 | ||
| eea6121a | 14571 | if (htab->plt != NULL && htab->plt->size != 0) |
| 5d1634d7 AM |
14572 | { |
| 14573 | /* Set .plt entry size. */ | |
| 4ce794b7 | 14574 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
| 5d1634d7 AM |
14575 | = PLT_ENTRY_SIZE; |
| 14576 | } | |
| 14577 | ||
| 84f5d08e AM |
14578 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
| 14579 | brlt ourselves if emitrelocations. */ | |
| 14580 | if (htab->brlt != NULL | |
| 14581 | && htab->brlt->reloc_count != 0 | |
| 14582 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 14583 | htab->brlt, | |
| d4730f92 | 14584 | elf_section_data (htab->brlt)->rela.hdr, |
| 84f5d08e AM |
14585 | elf_section_data (htab->brlt)->relocs, |
| 14586 | NULL)) | |
| 14587 | return FALSE; | |
| 14588 | ||
| 176a0d42 AM |
14589 | if (htab->glink != NULL |
| 14590 | && htab->glink->reloc_count != 0 | |
| 14591 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 14592 | htab->glink, | |
| d4730f92 | 14593 | elf_section_data (htab->glink)->rela.hdr, |
| 176a0d42 AM |
14594 | elf_section_data (htab->glink)->relocs, |
| 14595 | NULL)) | |
| 14596 | return FALSE; | |
| 14597 | ||
| 58d180e8 AM |
14598 | |
| 14599 | if (htab->glink_eh_frame != NULL | |
| dbaa2011 | 14600 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
| 58d180e8 AM |
14601 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
| 14602 | htab->glink_eh_frame, | |
| 14603 | htab->glink_eh_frame->contents)) | |
| 14604 | return FALSE; | |
| 14605 | ||
| e717da7e | 14606 | /* We need to handle writing out multiple GOT sections ourselves, |
| 7b53ace3 AM |
14607 | since we didn't add them to DYNOBJ. We know dynobj is the first |
| 14608 | bfd. */ | |
| e717da7e AM |
14609 | while ((dynobj = dynobj->link_next) != NULL) |
| 14610 | { | |
| 14611 | asection *s; | |
| 7b53ace3 | 14612 | |
| 0c8d6e5c | 14613 | if (!is_ppc64_elf (dynobj)) |
| 7b53ace3 AM |
14614 | continue; |
| 14615 | ||
| e717da7e AM |
14616 | s = ppc64_elf_tdata (dynobj)->got; |
| 14617 | if (s != NULL | |
| eea6121a | 14618 | && s->size != 0 |
| e717da7e AM |
14619 | && s->output_section != bfd_abs_section_ptr |
| 14620 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 14621 | s->contents, s->output_offset, | |
| eea6121a | 14622 | s->size)) |
| e717da7e AM |
14623 | return FALSE; |
| 14624 | s = ppc64_elf_tdata (dynobj)->relgot; | |
| 14625 | if (s != NULL | |
| eea6121a | 14626 | && s->size != 0 |
| e717da7e AM |
14627 | && s->output_section != bfd_abs_section_ptr |
| 14628 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 14629 | s->contents, s->output_offset, | |
| eea6121a | 14630 | s->size)) |
| e717da7e AM |
14631 | return FALSE; |
| 14632 | } | |
| f6c52c13 | 14633 | |
| b34976b6 | 14634 | return TRUE; |
| 5bd4f169 AM |
14635 | } |
| 14636 | ||
| 5bd4f169 | 14637 | #include "elf64-target.h" |
| 7b8e7dad AM |
14638 | |
| 14639 | /* FreeBSD support */ | |
| 14640 | ||
| 14641 | #undef TARGET_LITTLE_SYM | |
| 14642 | #undef TARGET_LITTLE_NAME | |
| 14643 | ||
| 14644 | #undef TARGET_BIG_SYM | |
| 14645 | #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec | |
| 14646 | #undef TARGET_BIG_NAME | |
| 14647 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
| 14648 | ||
| 14649 | #undef ELF_OSABI | |
| 14650 | #define ELF_OSABI ELFOSABI_FREEBSD | |
| 14651 | ||
| 14652 | #undef elf64_bed | |
| 14653 | #define elf64_bed elf64_powerpc_fbsd_bed | |
| 14654 | ||
| 14655 | #include "elf64-target.h" | |
| 14656 |