projects / deliverable / 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 |
| 6911b7dc | 121 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
| ad8e1ba5 | 122 | |
| 5bd4f169 AM |
123 | /* The name of the dynamic interpreter. This is put in the .interp |
| 124 | section. */ | |
| 125 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
| 126 | ||
| 127 | /* The size in bytes of an entry in the procedure linkage table. */ | |
| b9e5796b | 128 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
| 5bd4f169 AM |
129 | |
| 130 | /* The initial size of the plt reserved for the dynamic linker. */ | |
| b9e5796b | 131 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
| 5bd4f169 AM |
132 | |
| 133 | /* TOC base pointers offset from start of TOC. */ | |
| 411e1bfb AM |
134 | #define TOC_BASE_OFF 0x8000 |
| 135 | ||
| 136 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
| 137 | #define TP_OFFSET 0x7000 | |
| 138 | #define DTP_OFFSET 0x8000 | |
| 5bd4f169 | 139 | |
| ad8e1ba5 AM |
140 | /* .plt call stub instructions. The normal stub is like this, but |
| 141 | sometimes the .plt entry crosses a 64k boundary and we need to | |
| 71a39c98 | 142 | insert an addi to adjust r11. */ |
| 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 */ |
| b9e5796b AM |
186 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
| 187 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 188 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
| 189 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
| 190 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
| 5d1634d7 AM |
191 | |
| 192 | /* Pad with this. */ | |
| 193 | #define NOP 0x60000000 | |
| 194 | ||
| 721956f4 AM |
195 | /* Some other nops. */ |
| 196 | #define CROR_151515 0x4def7b82 | |
| 197 | #define CROR_313131 0x4ffffb82 | |
| 198 | ||
| cedb70c5 | 199 | /* .glink entries for the first 32k functions are two instructions. */ |
| 5d1634d7 AM |
200 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
| 201 | #define B_DOT 0x48000000 /* b . */ | |
| 202 | ||
| 203 | /* After that, we need two instructions to load the index, followed by | |
| 204 | a branch. */ | |
| 205 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
| 10ed1bba | 206 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
| 41bd81ab | 207 | |
| deb0e272 AM |
208 | /* Instructions used by the save and restore reg functions. */ |
| 209 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
| 210 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
| 211 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
| 212 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
| 82bd7b59 AM |
213 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
| 214 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
| deb0e272 AM |
215 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
| 216 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
| 217 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
| 218 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 82bd7b59 AM |
219 | #define BLR 0x4e800020 /* blr */ |
| 220 | ||
| 41bd81ab AM |
221 | /* Since .opd is an array of descriptors and each entry will end up |
| 222 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
| 223 | propagate .opd relocs; The dynamic linker should be taught to | |
| 1e2f5b6e | 224 | relocate .opd without reloc entries. */ |
| 41bd81ab AM |
225 | #ifndef NO_OPD_RELOCS |
| 226 | #define NO_OPD_RELOCS 0 | |
| 227 | #endif | |
| 5bd4f169 | 228 | \f |
| f5e87a1d | 229 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
| b34976b6 | 230 | |
| 5bd4f169 | 231 | /* Relocation HOWTO's. */ |
| 04c9666a | 232 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
| 5bd4f169 AM |
233 | |
| 234 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
| 235 | /* This reloc does nothing. */ | |
| 236 | HOWTO (R_PPC64_NONE, /* type */ | |
| 237 | 0, /* rightshift */ | |
| 411e1bfb AM |
238 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 239 | 32, /* bitsize */ | |
| b34976b6 | 240 | FALSE, /* pc_relative */ |
| 5bd4f169 | 241 | 0, /* bitpos */ |
| f5e87a1d | 242 | complain_overflow_dont, /* complain_on_overflow */ |
| 5bd4f169 AM |
243 | bfd_elf_generic_reloc, /* special_function */ |
| 244 | "R_PPC64_NONE", /* name */ | |
| b34976b6 | 245 | FALSE, /* partial_inplace */ |
| d006db6c | 246 | 0, /* src_mask */ |
| 5bd4f169 | 247 | 0, /* dst_mask */ |
| b34976b6 | 248 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
249 | |
| 250 | /* A standard 32 bit relocation. */ | |
| 251 | HOWTO (R_PPC64_ADDR32, /* type */ | |
| 252 | 0, /* rightshift */ | |
| 253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 254 | 32, /* bitsize */ | |
| b34976b6 | 255 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
256 | 0, /* bitpos */ |
| 257 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 258 | bfd_elf_generic_reloc, /* special_function */ | |
| 259 | "R_PPC64_ADDR32", /* name */ | |
| b34976b6 | 260 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
261 | 0, /* src_mask */ |
| 262 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 263 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
264 | |
| 265 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
| 266 | FIXME: we don't check that, we just clear them. */ | |
| 267 | HOWTO (R_PPC64_ADDR24, /* type */ | |
| 268 | 0, /* rightshift */ | |
| 269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 270 | 26, /* bitsize */ | |
| b34976b6 | 271 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
272 | 0, /* bitpos */ |
| 273 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 274 | bfd_elf_generic_reloc, /* special_function */ | |
| 275 | "R_PPC64_ADDR24", /* name */ | |
| b34976b6 | 276 | FALSE, /* partial_inplace */ |
| d006db6c | 277 | 0, /* src_mask */ |
| f5e87a1d | 278 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 279 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
280 | |
| 281 | /* A standard 16 bit relocation. */ | |
| 282 | HOWTO (R_PPC64_ADDR16, /* type */ | |
| 283 | 0, /* rightshift */ | |
| 284 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 285 | 16, /* bitsize */ | |
| b34976b6 | 286 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
287 | 0, /* bitpos */ |
| 288 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 289 | bfd_elf_generic_reloc, /* special_function */ | |
| 290 | "R_PPC64_ADDR16", /* name */ | |
| b34976b6 | 291 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
292 | 0, /* src_mask */ |
| 293 | 0xffff, /* dst_mask */ | |
| b34976b6 | 294 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
295 | |
| 296 | /* A 16 bit relocation without overflow. */ | |
| 297 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
| 298 | 0, /* rightshift */ | |
| 299 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 300 | 16, /* bitsize */ | |
| b34976b6 | 301 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
302 | 0, /* bitpos */ |
| 303 | complain_overflow_dont,/* complain_on_overflow */ | |
| 304 | bfd_elf_generic_reloc, /* special_function */ | |
| 305 | "R_PPC64_ADDR16_LO", /* name */ | |
| b34976b6 | 306 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
307 | 0, /* src_mask */ |
| 308 | 0xffff, /* dst_mask */ | |
| b34976b6 | 309 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
310 | |
| 311 | /* Bits 16-31 of an address. */ | |
| 312 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
| 313 | 16, /* rightshift */ | |
| 314 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 315 | 16, /* bitsize */ | |
| b34976b6 | 316 | FALSE, /* pc_relative */ |
| 5bd4f169 | 317 | 0, /* bitpos */ |
| f9c6b907 | 318 | complain_overflow_signed, /* complain_on_overflow */ |
| 5bd4f169 AM |
319 | bfd_elf_generic_reloc, /* special_function */ |
| 320 | "R_PPC64_ADDR16_HI", /* name */ | |
| b34976b6 | 321 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
322 | 0, /* src_mask */ |
| 323 | 0xffff, /* dst_mask */ | |
| b34976b6 | 324 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
325 | |
| 326 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
| 327 | bits, treated as a signed number, is negative. */ | |
| 328 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
| 329 | 16, /* rightshift */ | |
| 330 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 331 | 16, /* bitsize */ | |
| b34976b6 | 332 | FALSE, /* pc_relative */ |
| 5bd4f169 | 333 | 0, /* bitpos */ |
| f9c6b907 | 334 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 335 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 336 | "R_PPC64_ADDR16_HA", /* name */ |
| b34976b6 | 337 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
338 | 0, /* src_mask */ |
| 339 | 0xffff, /* dst_mask */ | |
| b34976b6 | 340 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
341 | |
| 342 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
| 343 | FIXME: we don't check that, we just clear them. */ | |
| 344 | HOWTO (R_PPC64_ADDR14, /* type */ | |
| 345 | 0, /* rightshift */ | |
| 346 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 347 | 16, /* bitsize */ | |
| b34976b6 | 348 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
349 | 0, /* bitpos */ |
| 350 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2441e016 | 351 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 352 | "R_PPC64_ADDR14", /* name */ |
| b34976b6 | 353 | FALSE, /* partial_inplace */ |
| d006db6c | 354 | 0, /* src_mask */ |
| f5e87a1d | 355 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 356 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
357 | |
| 358 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 359 | indicate that the branch is expected to be taken. The lower two | |
| 360 | bits must be zero. */ | |
| 361 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
| 362 | 0, /* rightshift */ | |
| 363 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 364 | 16, /* bitsize */ | |
| b34976b6 | 365 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
366 | 0, /* bitpos */ |
| 367 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 368 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 369 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
| b34976b6 | 370 | FALSE, /* partial_inplace */ |
| d006db6c | 371 | 0, /* src_mask */ |
| f5e87a1d | 372 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 373 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
374 | |
| 375 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 376 | indicate that the branch is not expected to be taken. The lower | |
| 377 | two bits must be zero. */ | |
| 378 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
| 379 | 0, /* rightshift */ | |
| 380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 381 | 16, /* bitsize */ | |
| b34976b6 | 382 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
383 | 0, /* bitpos */ |
| 384 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 385 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 386 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
| b34976b6 | 387 | FALSE, /* partial_inplace */ |
| d006db6c | 388 | 0, /* src_mask */ |
| f5e87a1d | 389 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 390 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
391 | |
| 392 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
| 393 | HOWTO (R_PPC64_REL24, /* type */ | |
| 394 | 0, /* rightshift */ | |
| 395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 396 | 26, /* bitsize */ | |
| b34976b6 | 397 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
398 | 0, /* bitpos */ |
| 399 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 400 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 401 | "R_PPC64_REL24", /* name */ |
| b34976b6 | 402 | FALSE, /* partial_inplace */ |
| d006db6c | 403 | 0, /* src_mask */ |
| f5e87a1d | 404 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 405 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
406 | |
| 407 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
| 408 | HOWTO (R_PPC64_REL14, /* type */ | |
| 409 | 0, /* rightshift */ | |
| 410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 411 | 16, /* bitsize */ | |
| b34976b6 | 412 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
413 | 0, /* bitpos */ |
| 414 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 415 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 416 | "R_PPC64_REL14", /* name */ |
| b34976b6 | 417 | FALSE, /* partial_inplace */ |
| d006db6c | 418 | 0, /* src_mask */ |
| f5e87a1d | 419 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 420 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
421 | |
| 422 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 423 | the branch is expected to be taken. The lower two bits must be | |
| 424 | zero. */ | |
| 425 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
| 426 | 0, /* rightshift */ | |
| 427 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 428 | 16, /* bitsize */ | |
| b34976b6 | 429 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
430 | 0, /* bitpos */ |
| 431 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 432 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 433 | "R_PPC64_REL14_BRTAKEN", /* name */ |
| b34976b6 | 434 | FALSE, /* partial_inplace */ |
| d006db6c | 435 | 0, /* src_mask */ |
| f5e87a1d | 436 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 437 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
438 | |
| 439 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 440 | the branch is not expected to be taken. The lower two bits must | |
| 441 | be zero. */ | |
| 442 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
| 443 | 0, /* rightshift */ | |
| 444 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 445 | 16, /* bitsize */ | |
| b34976b6 | 446 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
447 | 0, /* bitpos */ |
| 448 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 449 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 450 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
| b34976b6 | 451 | FALSE, /* partial_inplace */ |
| d006db6c | 452 | 0, /* src_mask */ |
| f5e87a1d | 453 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 454 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
455 | |
| 456 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
| 457 | symbol. */ | |
| 458 | HOWTO (R_PPC64_GOT16, /* type */ | |
| 459 | 0, /* rightshift */ | |
| 460 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 461 | 16, /* bitsize */ | |
| b34976b6 | 462 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
463 | 0, /* bitpos */ |
| 464 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 465 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 466 | "R_PPC64_GOT16", /* name */ |
| b34976b6 | 467 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
468 | 0, /* src_mask */ |
| 469 | 0xffff, /* dst_mask */ | |
| b34976b6 | 470 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
471 | |
| 472 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
| 473 | the symbol. */ | |
| 474 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
| 475 | 0, /* rightshift */ | |
| 476 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 477 | 16, /* bitsize */ | |
| b34976b6 | 478 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
479 | 0, /* bitpos */ |
| 480 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 481 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 482 | "R_PPC64_GOT16_LO", /* name */ |
| b34976b6 | 483 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
484 | 0, /* src_mask */ |
| 485 | 0xffff, /* dst_mask */ | |
| b34976b6 | 486 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
487 | |
| 488 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
| 489 | the symbol. */ | |
| 490 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
| 491 | 16, /* rightshift */ | |
| 492 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 493 | 16, /* bitsize */ | |
| b34976b6 | 494 | FALSE, /* pc_relative */ |
| 5bd4f169 | 495 | 0, /* bitpos */ |
| f9c6b907 | 496 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 497 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 498 | "R_PPC64_GOT16_HI", /* name */ |
| b34976b6 | 499 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
500 | 0, /* src_mask */ |
| 501 | 0xffff, /* dst_mask */ | |
| b34976b6 | 502 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
503 | |
| 504 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
| 505 | the symbol. */ | |
| 506 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
| 507 | 16, /* rightshift */ | |
| 508 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 509 | 16, /* bitsize */ | |
| b34976b6 | 510 | FALSE, /* pc_relative */ |
| 5bd4f169 | 511 | 0, /* bitpos */ |
| f9c6b907 | 512 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 513 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 514 | "R_PPC64_GOT16_HA", /* name */ |
| b34976b6 | 515 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
516 | 0, /* src_mask */ |
| 517 | 0xffff, /* dst_mask */ | |
| b34976b6 | 518 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
519 | |
| 520 | /* This is used only by the dynamic linker. The symbol should exist | |
| 521 | both in the object being run and in some shared library. The | |
| 522 | dynamic linker copies the data addressed by the symbol from the | |
| 523 | shared library into the object, because the object being | |
| 524 | run has to have the data at some particular address. */ | |
| 525 | HOWTO (R_PPC64_COPY, /* type */ | |
| 526 | 0, /* rightshift */ | |
| f5e87a1d AM |
527 | 0, /* this one is variable size */ |
| 528 | 0, /* bitsize */ | |
| b34976b6 | 529 | FALSE, /* pc_relative */ |
| 5bd4f169 | 530 | 0, /* bitpos */ |
| f5e87a1d AM |
531 | complain_overflow_dont, /* complain_on_overflow */ |
| 532 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 5bd4f169 | 533 | "R_PPC64_COPY", /* name */ |
| b34976b6 | 534 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
535 | 0, /* src_mask */ |
| 536 | 0, /* dst_mask */ | |
| b34976b6 | 537 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
538 | |
| 539 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
| 540 | entries. */ | |
| 541 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
| 542 | 0, /* rightshift */ | |
| 543 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 544 | 64, /* bitsize */ | |
| b34976b6 | 545 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
546 | 0, /* bitpos */ |
| 547 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 548 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 549 | "R_PPC64_GLOB_DAT", /* name */ |
| b34976b6 | 550 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 551 | 0, /* src_mask */ |
| f5e87a1d | 552 | ONES (64), /* dst_mask */ |
| b34976b6 | 553 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
554 | |
| 555 | /* Created by the link editor. Marks a procedure linkage table | |
| 556 | entry for a symbol. */ | |
| 557 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
| 558 | 0, /* rightshift */ | |
| 559 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 560 | 0, /* bitsize */ | |
| b34976b6 | 561 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
562 | 0, /* bitpos */ |
| 563 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 564 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 565 | "R_PPC64_JMP_SLOT", /* name */ |
| b34976b6 | 566 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
567 | 0, /* src_mask */ |
| 568 | 0, /* dst_mask */ | |
| b34976b6 | 569 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
570 | |
| 571 | /* Used only by the dynamic linker. When the object is run, this | |
| 572 | doubleword64 is set to the load address of the object, plus the | |
| 573 | addend. */ | |
| 574 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
| 575 | 0, /* rightshift */ | |
| 576 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 577 | 64, /* bitsize */ | |
| b34976b6 | 578 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
579 | 0, /* bitpos */ |
| 580 | complain_overflow_dont, /* complain_on_overflow */ | |
| 581 | bfd_elf_generic_reloc, /* special_function */ | |
| 582 | "R_PPC64_RELATIVE", /* name */ | |
| b34976b6 | 583 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 584 | 0, /* src_mask */ |
| f5e87a1d | 585 | ONES (64), /* dst_mask */ |
| b34976b6 | 586 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
587 | |
| 588 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
| 589 | HOWTO (R_PPC64_UADDR32, /* type */ | |
| 590 | 0, /* rightshift */ | |
| 591 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 592 | 32, /* bitsize */ | |
| b34976b6 | 593 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
594 | 0, /* bitpos */ |
| 595 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 596 | bfd_elf_generic_reloc, /* special_function */ | |
| 597 | "R_PPC64_UADDR32", /* name */ | |
| b34976b6 | 598 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
599 | 0, /* src_mask */ |
| 600 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 601 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
602 | |
| 603 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
| 604 | HOWTO (R_PPC64_UADDR16, /* type */ | |
| 605 | 0, /* rightshift */ | |
| 606 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 607 | 16, /* bitsize */ | |
| b34976b6 | 608 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
609 | 0, /* bitpos */ |
| 610 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 611 | bfd_elf_generic_reloc, /* special_function */ | |
| 612 | "R_PPC64_UADDR16", /* name */ | |
| b34976b6 | 613 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
614 | 0, /* src_mask */ |
| 615 | 0xffff, /* dst_mask */ | |
| b34976b6 | 616 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
617 | |
| 618 | /* 32-bit PC relative. */ | |
| 619 | HOWTO (R_PPC64_REL32, /* type */ | |
| 620 | 0, /* rightshift */ | |
| 621 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 622 | 32, /* bitsize */ | |
| b34976b6 | 623 | TRUE, /* pc_relative */ |
| 5bd4f169 | 624 | 0, /* bitpos */ |
| cedb70c5 | 625 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
| 5bd4f169 AM |
626 | complain_overflow_signed, /* complain_on_overflow */ |
| 627 | bfd_elf_generic_reloc, /* special_function */ | |
| 628 | "R_PPC64_REL32", /* name */ | |
| b34976b6 | 629 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
630 | 0, /* src_mask */ |
| 631 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 632 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 633 | |
| 10ed1bba | 634 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
635 | HOWTO (R_PPC64_PLT32, /* type */ |
| 636 | 0, /* rightshift */ | |
| 637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 638 | 32, /* bitsize */ | |
| b34976b6 | 639 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
640 | 0, /* bitpos */ |
| 641 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 642 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 643 | "R_PPC64_PLT32", /* name */ |
| b34976b6 | 644 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 645 | 0, /* src_mask */ |
| f5e87a1d | 646 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 647 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
648 | |
| 649 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
| 650 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
| 651 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
| 652 | 0, /* rightshift */ | |
| 653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 654 | 32, /* bitsize */ | |
| b34976b6 | 655 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
656 | 0, /* bitpos */ |
| 657 | complain_overflow_signed, /* complain_on_overflow */ | |
| 658 | bfd_elf_generic_reloc, /* special_function */ | |
| 659 | "R_PPC64_PLTREL32", /* name */ | |
| b34976b6 | 660 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 661 | 0, /* src_mask */ |
| f5e87a1d | 662 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 663 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
664 | |
| 665 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
| 666 | the symbol. */ | |
| 667 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
| 668 | 0, /* rightshift */ | |
| 669 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 670 | 16, /* bitsize */ | |
| b34976b6 | 671 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
672 | 0, /* bitpos */ |
| 673 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 674 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 675 | "R_PPC64_PLT16_LO", /* name */ |
| b34976b6 | 676 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
677 | 0, /* src_mask */ |
| 678 | 0xffff, /* dst_mask */ | |
| b34976b6 | 679 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
680 | |
| 681 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
| 682 | the symbol. */ | |
| 683 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
| 684 | 16, /* rightshift */ | |
| 685 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 686 | 16, /* bitsize */ | |
| b34976b6 | 687 | FALSE, /* pc_relative */ |
| 5bd4f169 | 688 | 0, /* bitpos */ |
| f9c6b907 | 689 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 690 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 691 | "R_PPC64_PLT16_HI", /* name */ |
| b34976b6 | 692 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
693 | 0, /* src_mask */ |
| 694 | 0xffff, /* dst_mask */ | |
| b34976b6 | 695 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
696 | |
| 697 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
| 698 | the symbol. */ | |
| 699 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
| 700 | 16, /* rightshift */ | |
| 701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 702 | 16, /* bitsize */ | |
| b34976b6 | 703 | FALSE, /* pc_relative */ |
| 5bd4f169 | 704 | 0, /* bitpos */ |
| f9c6b907 | 705 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 706 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 707 | "R_PPC64_PLT16_HA", /* name */ |
| b34976b6 | 708 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
709 | 0, /* src_mask */ |
| 710 | 0xffff, /* dst_mask */ | |
| b34976b6 | 711 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 712 | |
| c061c2d8 | 713 | /* 16-bit section relative relocation. */ |
| 5bd4f169 AM |
714 | HOWTO (R_PPC64_SECTOFF, /* type */ |
| 715 | 0, /* rightshift */ | |
| c061c2d8 AM |
716 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 717 | 16, /* bitsize */ | |
| b34976b6 | 718 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
719 | 0, /* bitpos */ |
| 720 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 721 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 722 | "R_PPC64_SECTOFF", /* name */ |
| b34976b6 | 723 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 724 | 0, /* src_mask */ |
| c061c2d8 | 725 | 0xffff, /* dst_mask */ |
| b34976b6 | 726 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 727 | |
| c061c2d8 | 728 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
| 5bd4f169 AM |
729 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
| 730 | 0, /* rightshift */ | |
| 731 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 732 | 16, /* bitsize */ | |
| b34976b6 | 733 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
734 | 0, /* bitpos */ |
| 735 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 736 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 737 | "R_PPC64_SECTOFF_LO", /* name */ |
| b34976b6 | 738 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
739 | 0, /* src_mask */ |
| 740 | 0xffff, /* dst_mask */ | |
| b34976b6 | 741 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
742 | |
| 743 | /* 16-bit upper half section relative relocation. */ | |
| 744 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
| 745 | 16, /* rightshift */ | |
| 746 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 747 | 16, /* bitsize */ | |
| b34976b6 | 748 | FALSE, /* pc_relative */ |
| 5bd4f169 | 749 | 0, /* bitpos */ |
| f9c6b907 | 750 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 751 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 752 | "R_PPC64_SECTOFF_HI", /* name */ |
| b34976b6 | 753 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
754 | 0, /* src_mask */ |
| 755 | 0xffff, /* dst_mask */ | |
| b34976b6 | 756 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
757 | |
| 758 | /* 16-bit upper half adjusted section relative relocation. */ | |
| 759 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
| 760 | 16, /* rightshift */ | |
| 761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 762 | 16, /* bitsize */ | |
| b34976b6 | 763 | FALSE, /* pc_relative */ |
| 5bd4f169 | 764 | 0, /* bitpos */ |
| f9c6b907 | 765 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 766 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
| 5bd4f169 | 767 | "R_PPC64_SECTOFF_HA", /* name */ |
| b34976b6 | 768 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
769 | 0, /* src_mask */ |
| 770 | 0xffff, /* dst_mask */ | |
| b34976b6 | 771 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 772 | |
| 04c9666a AM |
773 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
| 774 | HOWTO (R_PPC64_REL30, /* type */ | |
| 5bd4f169 AM |
775 | 2, /* rightshift */ |
| 776 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 777 | 30, /* bitsize */ | |
| b34976b6 | 778 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
779 | 0, /* bitpos */ |
| 780 | complain_overflow_dont, /* complain_on_overflow */ | |
| 781 | bfd_elf_generic_reloc, /* special_function */ | |
| 04c9666a | 782 | "R_PPC64_REL30", /* name */ |
| b34976b6 | 783 | FALSE, /* partial_inplace */ |
| d006db6c | 784 | 0, /* src_mask */ |
| 5bd4f169 | 785 | 0xfffffffc, /* dst_mask */ |
| b34976b6 | 786 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
787 | |
| 788 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
| 789 | ||
| 790 | /* A standard 64-bit relocation. */ | |
| 791 | HOWTO (R_PPC64_ADDR64, /* type */ | |
| 792 | 0, /* rightshift */ | |
| 793 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 794 | 64, /* bitsize */ | |
| b34976b6 | 795 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
796 | 0, /* bitpos */ |
| 797 | complain_overflow_dont, /* complain_on_overflow */ | |
| 798 | bfd_elf_generic_reloc, /* special_function */ | |
| 799 | "R_PPC64_ADDR64", /* name */ | |
| b34976b6 | 800 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 801 | 0, /* src_mask */ |
| f5e87a1d | 802 | ONES (64), /* dst_mask */ |
| b34976b6 | 803 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
804 | |
| 805 | /* The bits 32-47 of an address. */ | |
| 806 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
| 807 | 32, /* rightshift */ | |
| 808 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 809 | 16, /* bitsize */ | |
| b34976b6 | 810 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
811 | 0, /* bitpos */ |
| 812 | complain_overflow_dont, /* complain_on_overflow */ | |
| 813 | bfd_elf_generic_reloc, /* special_function */ | |
| 814 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
| b34976b6 | 815 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
816 | 0, /* src_mask */ |
| 817 | 0xffff, /* dst_mask */ | |
| b34976b6 | 818 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
819 | |
| 820 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
| 821 | 16 bits, treated as a signed number, is negative. */ | |
| 822 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
| 823 | 32, /* rightshift */ | |
| 824 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 825 | 16, /* bitsize */ | |
| b34976b6 | 826 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
827 | 0, /* bitpos */ |
| 828 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 829 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 830 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
| b34976b6 | 831 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
832 | 0, /* src_mask */ |
| 833 | 0xffff, /* dst_mask */ | |
| b34976b6 | 834 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
835 | |
| 836 | /* The bits 48-63 of an address. */ | |
| 837 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
| 838 | 48, /* rightshift */ | |
| 839 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 840 | 16, /* bitsize */ | |
| b34976b6 | 841 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
842 | 0, /* bitpos */ |
| 843 | complain_overflow_dont, /* complain_on_overflow */ | |
| 844 | bfd_elf_generic_reloc, /* special_function */ | |
| 845 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
| b34976b6 | 846 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
847 | 0, /* src_mask */ |
| 848 | 0xffff, /* dst_mask */ | |
| b34976b6 | 849 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
850 | |
| 851 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
| 852 | 16 bits, treated as a signed number, is negative. */ | |
| 853 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
| 854 | 48, /* rightshift */ | |
| 855 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 856 | 16, /* bitsize */ | |
| b34976b6 | 857 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
858 | 0, /* bitpos */ |
| 859 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 860 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 861 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
| b34976b6 | 862 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
863 | 0, /* src_mask */ |
| 864 | 0xffff, /* dst_mask */ | |
| b34976b6 | 865 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
866 | |
| 867 | /* Like ADDR64, but may be unaligned. */ | |
| 868 | HOWTO (R_PPC64_UADDR64, /* type */ | |
| 869 | 0, /* rightshift */ | |
| 870 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 871 | 64, /* bitsize */ | |
| b34976b6 | 872 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
873 | 0, /* bitpos */ |
| 874 | complain_overflow_dont, /* complain_on_overflow */ | |
| 875 | bfd_elf_generic_reloc, /* special_function */ | |
| 876 | "R_PPC64_UADDR64", /* name */ | |
| b34976b6 | 877 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 878 | 0, /* src_mask */ |
| f5e87a1d | 879 | ONES (64), /* dst_mask */ |
| b34976b6 | 880 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
881 | |
| 882 | /* 64-bit relative relocation. */ | |
| 883 | HOWTO (R_PPC64_REL64, /* type */ | |
| 884 | 0, /* rightshift */ | |
| 885 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 886 | 64, /* bitsize */ | |
| b34976b6 | 887 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
888 | 0, /* bitpos */ |
| 889 | complain_overflow_dont, /* complain_on_overflow */ | |
| 890 | bfd_elf_generic_reloc, /* special_function */ | |
| 891 | "R_PPC64_REL64", /* name */ | |
| b34976b6 | 892 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 893 | 0, /* src_mask */ |
| f5e87a1d | 894 | ONES (64), /* dst_mask */ |
| b34976b6 | 895 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 896 | |
| cedb70c5 | 897 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
898 | HOWTO (R_PPC64_PLT64, /* type */ |
| 899 | 0, /* rightshift */ | |
| 900 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 901 | 64, /* bitsize */ | |
| b34976b6 | 902 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
903 | 0, /* bitpos */ |
| 904 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 905 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 906 | "R_PPC64_PLT64", /* name */ |
| b34976b6 | 907 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 908 | 0, /* src_mask */ |
| f5e87a1d | 909 | ONES (64), /* dst_mask */ |
| b34976b6 | 910 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
911 | |
| 912 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
| 913 | table. */ | |
| 914 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
| 915 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
| 916 | 0, /* rightshift */ | |
| 917 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 918 | 64, /* bitsize */ | |
| b34976b6 | 919 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
920 | 0, /* bitpos */ |
| 921 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 922 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 923 | "R_PPC64_PLTREL64", /* name */ |
| b34976b6 | 924 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 925 | 0, /* src_mask */ |
| f5e87a1d | 926 | ONES (64), /* dst_mask */ |
| b34976b6 | 927 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
928 | |
| 929 | /* 16 bit TOC-relative relocation. */ | |
| 930 | ||
| 931 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
| 932 | HOWTO (R_PPC64_TOC16, /* type */ | |
| 933 | 0, /* rightshift */ | |
| 934 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 935 | 16, /* bitsize */ | |
| b34976b6 | 936 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
937 | 0, /* bitpos */ |
| 938 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 939 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 940 | "R_PPC64_TOC16", /* name */ |
| b34976b6 | 941 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
942 | 0, /* src_mask */ |
| 943 | 0xffff, /* dst_mask */ | |
| b34976b6 | 944 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
945 | |
| 946 | /* 16 bit TOC-relative relocation without overflow. */ | |
| 947 | ||
| 948 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
| 949 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
| 950 | 0, /* rightshift */ | |
| 951 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 952 | 16, /* bitsize */ | |
| b34976b6 | 953 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
954 | 0, /* bitpos */ |
| 955 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 956 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 957 | "R_PPC64_TOC16_LO", /* name */ |
| b34976b6 | 958 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
959 | 0, /* src_mask */ |
| 960 | 0xffff, /* dst_mask */ | |
| b34976b6 | 961 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
962 | |
| 963 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
| 964 | ||
| 965 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
| 966 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
| 967 | 16, /* rightshift */ | |
| 968 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 969 | 16, /* bitsize */ | |
| b34976b6 | 970 | FALSE, /* pc_relative */ |
| 5bd4f169 | 971 | 0, /* bitpos */ |
| f9c6b907 | 972 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 973 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 974 | "R_PPC64_TOC16_HI", /* name */ |
| b34976b6 | 975 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
976 | 0, /* src_mask */ |
| 977 | 0xffff, /* dst_mask */ | |
| b34976b6 | 978 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
979 | |
| 980 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
| 981 | contents of the low 16 bits, treated as a signed number, is | |
| 982 | negative. */ | |
| 983 | ||
| 984 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
| 985 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
| 986 | 16, /* rightshift */ | |
| 987 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 988 | 16, /* bitsize */ | |
| b34976b6 | 989 | FALSE, /* pc_relative */ |
| 5bd4f169 | 990 | 0, /* bitpos */ |
| f9c6b907 | 991 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 992 | ppc64_elf_toc_ha_reloc, /* special_function */ |
| 5bd4f169 | 993 | "R_PPC64_TOC16_HA", /* name */ |
| b34976b6 | 994 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
995 | 0, /* src_mask */ |
| 996 | 0xffff, /* dst_mask */ | |
| b34976b6 | 997 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
998 | |
| 999 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
| 1000 | ||
| 1001 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
| 1002 | HOWTO (R_PPC64_TOC, /* type */ | |
| 1003 | 0, /* rightshift */ | |
| 1004 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1005 | 64, /* bitsize */ | |
| b34976b6 | 1006 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1007 | 0, /* bitpos */ |
| 1008 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 1009 | ppc64_elf_toc64_reloc, /* special_function */ |
| 5bd4f169 | 1010 | "R_PPC64_TOC", /* name */ |
| b34976b6 | 1011 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 1012 | 0, /* src_mask */ |
| f5e87a1d | 1013 | ONES (64), /* dst_mask */ |
| b34976b6 | 1014 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1015 | |
| 1016 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
| 1017 | value to relocate may (!) refer to a PLT entry which the link | |
| 1018 | editor (a) may replace with the symbol value. If the link editor | |
| 1019 | is unable to fully resolve the symbol, it may (b) create a PLT | |
| 1020 | entry and store the address to the new PLT entry in the GOT. | |
| 1021 | This permits lazy resolution of function symbols at run time. | |
| 1022 | The link editor may also skip all of this and just (c) emit a | |
| 1023 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
| 1024 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
| 1025 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
| 1026 | 0, /* rightshift */ | |
| 1027 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1028 | 16, /* bitsize */ | |
| b34976b6 | 1029 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1030 | 0, /* bitpos */ |
| 1031 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 1032 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb AM |
1033 | "R_PPC64_PLTGOT16", /* name */ |
| 1034 | FALSE, /* partial_inplace */ | |
| 1035 | 0, /* src_mask */ | |
| 1036 | 0xffff, /* dst_mask */ | |
| 1037 | FALSE), /* pcrel_offset */ | |
| 1038 | ||
| 1039 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
| 1040 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1041 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
| 1042 | 0, /* rightshift */ | |
| 1043 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1044 | 16, /* bitsize */ | |
| 1045 | FALSE, /* pc_relative */ | |
| 1046 | 0, /* bitpos */ | |
| 1047 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1048 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1049 | "R_PPC64_PLTGOT16_LO", /* name */ | |
| 1050 | FALSE, /* partial_inplace */ | |
| 1051 | 0, /* src_mask */ | |
| 1052 | 0xffff, /* dst_mask */ | |
| 1053 | FALSE), /* pcrel_offset */ | |
| 1054 | ||
| 1055 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
| 1056 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
| 1057 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
| 1058 | 16, /* rightshift */ | |
| 1059 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1060 | 16, /* bitsize */ | |
| 1061 | FALSE, /* pc_relative */ | |
| 1062 | 0, /* bitpos */ | |
| f9c6b907 | 1063 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1064 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1065 | "R_PPC64_PLTGOT16_HI", /* name */ | |
| 1066 | FALSE, /* partial_inplace */ | |
| 1067 | 0, /* src_mask */ | |
| 1068 | 0xffff, /* dst_mask */ | |
| 1069 | FALSE), /* pcrel_offset */ | |
| 1070 | ||
| 1071 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
| 1072 | 1 if the contents of the low 16 bits, treated as a signed number, | |
| 1073 | is negative. */ | |
| 1074 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
| 1075 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
| 1076 | 16, /* rightshift */ | |
| 1077 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1078 | 16, /* bitsize */ | |
| 1079 | FALSE, /* pc_relative */ | |
| 1080 | 0, /* bitpos */ | |
| f9c6b907 | 1081 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1082 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1083 | "R_PPC64_PLTGOT16_HA", /* name */ | |
| 1084 | FALSE, /* partial_inplace */ | |
| 1085 | 0, /* src_mask */ | |
| 1086 | 0xffff, /* dst_mask */ | |
| 1087 | FALSE), /* pcrel_offset */ | |
| 1088 | ||
| 1089 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
| 1090 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
| 1091 | 0, /* rightshift */ | |
| 1092 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1093 | 16, /* bitsize */ | |
| 1094 | FALSE, /* pc_relative */ | |
| 1095 | 0, /* bitpos */ | |
| 1096 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1097 | bfd_elf_generic_reloc, /* special_function */ | |
| 1098 | "R_PPC64_ADDR16_DS", /* name */ | |
| 1099 | FALSE, /* partial_inplace */ | |
| 1100 | 0, /* src_mask */ | |
| 1101 | 0xfffc, /* dst_mask */ | |
| 1102 | FALSE), /* pcrel_offset */ | |
| 1103 | ||
| 1104 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
| 1105 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
| 1106 | 0, /* rightshift */ | |
| 1107 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1108 | 16, /* bitsize */ | |
| 1109 | FALSE, /* pc_relative */ | |
| 1110 | 0, /* bitpos */ | |
| 1111 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1112 | bfd_elf_generic_reloc, /* special_function */ | |
| 1113 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
| 1114 | FALSE, /* partial_inplace */ | |
| 1115 | 0, /* src_mask */ | |
| 1116 | 0xfffc, /* dst_mask */ | |
| 1117 | FALSE), /* pcrel_offset */ | |
| 1118 | ||
| 1119 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
| 1120 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
| 1121 | 0, /* rightshift */ | |
| 1122 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1123 | 16, /* bitsize */ | |
| 1124 | FALSE, /* pc_relative */ | |
| 1125 | 0, /* bitpos */ | |
| 1126 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1127 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1128 | "R_PPC64_GOT16_DS", /* name */ | |
| 1129 | FALSE, /* partial_inplace */ | |
| 1130 | 0, /* src_mask */ | |
| 1131 | 0xfffc, /* dst_mask */ | |
| 1132 | FALSE), /* pcrel_offset */ | |
| 1133 | ||
| 1134 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
| 1135 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
| 1136 | 0, /* rightshift */ | |
| 1137 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1138 | 16, /* bitsize */ | |
| 1139 | FALSE, /* pc_relative */ | |
| 1140 | 0, /* bitpos */ | |
| 1141 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1142 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1143 | "R_PPC64_GOT16_LO_DS", /* name */ | |
| 1144 | FALSE, /* partial_inplace */ | |
| 1145 | 0, /* src_mask */ | |
| 1146 | 0xfffc, /* dst_mask */ | |
| 1147 | FALSE), /* pcrel_offset */ | |
| 1148 | ||
| 1149 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
| 1150 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
| 1151 | 0, /* rightshift */ | |
| 1152 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1153 | 16, /* bitsize */ | |
| 1154 | FALSE, /* pc_relative */ | |
| 1155 | 0, /* bitpos */ | |
| 1156 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1157 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1158 | "R_PPC64_PLT16_LO_DS", /* name */ | |
| 1159 | FALSE, /* partial_inplace */ | |
| 1160 | 0, /* src_mask */ | |
| 1161 | 0xfffc, /* dst_mask */ | |
| 1162 | FALSE), /* pcrel_offset */ | |
| 1163 | ||
| 1164 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
| 1165 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
| 1166 | 0, /* rightshift */ | |
| 1167 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1168 | 16, /* bitsize */ | |
| 1169 | FALSE, /* pc_relative */ | |
| 1170 | 0, /* bitpos */ | |
| 1171 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1172 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1173 | "R_PPC64_SECTOFF_DS", /* name */ | |
| 1174 | FALSE, /* partial_inplace */ | |
| 1175 | 0, /* src_mask */ | |
| 1176 | 0xfffc, /* dst_mask */ | |
| 1177 | FALSE), /* pcrel_offset */ | |
| 1178 | ||
| 1179 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
| 1180 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
| 1181 | 0, /* rightshift */ | |
| 1182 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1183 | 16, /* bitsize */ | |
| 1184 | FALSE, /* pc_relative */ | |
| 1185 | 0, /* bitpos */ | |
| 1186 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1187 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1188 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
| 1189 | FALSE, /* partial_inplace */ | |
| 1190 | 0, /* src_mask */ | |
| 1191 | 0xfffc, /* dst_mask */ | |
| 1192 | FALSE), /* pcrel_offset */ | |
| 1193 | ||
| 1194 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
| 1195 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
| 1196 | 0, /* rightshift */ | |
| 1197 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1198 | 16, /* bitsize */ | |
| 1199 | FALSE, /* pc_relative */ | |
| 1200 | 0, /* bitpos */ | |
| 1201 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1202 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1203 | "R_PPC64_TOC16_DS", /* name */ | |
| 1204 | FALSE, /* partial_inplace */ | |
| 1205 | 0, /* src_mask */ | |
| 1206 | 0xfffc, /* dst_mask */ | |
| 1207 | FALSE), /* pcrel_offset */ | |
| 1208 | ||
| 1209 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
| 1210 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
| 1211 | 0, /* rightshift */ | |
| 1212 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1213 | 16, /* bitsize */ | |
| 1214 | FALSE, /* pc_relative */ | |
| 1215 | 0, /* bitpos */ | |
| 1216 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1217 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1218 | "R_PPC64_TOC16_LO_DS", /* name */ | |
| 1219 | FALSE, /* partial_inplace */ | |
| 1220 | 0, /* src_mask */ | |
| 1221 | 0xfffc, /* dst_mask */ | |
| 1222 | FALSE), /* pcrel_offset */ | |
| 1223 | ||
| 1224 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
| 1225 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
| 6bfdb61b | 1226 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
| 411e1bfb AM |
1227 | 0, /* rightshift */ |
| 1228 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1229 | 16, /* bitsize */ | |
| 1230 | FALSE, /* pc_relative */ | |
| 1231 | 0, /* bitpos */ | |
| 1232 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1233 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1234 | "R_PPC64_PLTGOT16_DS", /* name */ | |
| 1235 | FALSE, /* partial_inplace */ | |
| 1236 | 0, /* src_mask */ | |
| 1237 | 0xfffc, /* dst_mask */ | |
| 1238 | FALSE), /* pcrel_offset */ | |
| 1239 | ||
| 1240 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
| 1241 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1242 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
| 1243 | 0, /* rightshift */ | |
| 1244 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1245 | 16, /* bitsize */ | |
| 1246 | FALSE, /* pc_relative */ | |
| 1247 | 0, /* bitpos */ | |
| 1248 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1249 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1250 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
| 1251 | FALSE, /* partial_inplace */ | |
| 1252 | 0, /* src_mask */ | |
| 1253 | 0xfffc, /* dst_mask */ | |
| 1254 | FALSE), /* pcrel_offset */ | |
| 1255 | ||
| 727fc41e | 1256 | /* Marker relocs for TLS. */ |
| 411e1bfb AM |
1257 | HOWTO (R_PPC64_TLS, |
| 1258 | 0, /* rightshift */ | |
| 1259 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1260 | 32, /* bitsize */ | |
| 1261 | FALSE, /* pc_relative */ | |
| 1262 | 0, /* bitpos */ | |
| 1263 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1264 | bfd_elf_generic_reloc, /* special_function */ | |
| 1265 | "R_PPC64_TLS", /* name */ | |
| 1266 | FALSE, /* partial_inplace */ | |
| 1267 | 0, /* src_mask */ | |
| 1268 | 0, /* dst_mask */ | |
| 1269 | FALSE), /* pcrel_offset */ | |
| 1270 | ||
| 727fc41e AM |
1271 | HOWTO (R_PPC64_TLSGD, |
| 1272 | 0, /* rightshift */ | |
| 1273 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1274 | 32, /* bitsize */ | |
| 1275 | FALSE, /* pc_relative */ | |
| 1276 | 0, /* bitpos */ | |
| 1277 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1278 | bfd_elf_generic_reloc, /* special_function */ | |
| 1279 | "R_PPC64_TLSGD", /* name */ | |
| 1280 | FALSE, /* partial_inplace */ | |
| 1281 | 0, /* src_mask */ | |
| 1282 | 0, /* dst_mask */ | |
| 1283 | FALSE), /* pcrel_offset */ | |
| 1284 | ||
| 1285 | HOWTO (R_PPC64_TLSLD, | |
| 1286 | 0, /* rightshift */ | |
| 1287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1288 | 32, /* bitsize */ | |
| 1289 | FALSE, /* pc_relative */ | |
| 1290 | 0, /* bitpos */ | |
| 1291 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1292 | bfd_elf_generic_reloc, /* special_function */ | |
| 1293 | "R_PPC64_TLSLD", /* name */ | |
| 1294 | FALSE, /* partial_inplace */ | |
| 1295 | 0, /* src_mask */ | |
| 1296 | 0, /* dst_mask */ | |
| 1297 | FALSE), /* pcrel_offset */ | |
| 1298 | ||
| 3b421ab3 AM |
1299 | HOWTO (R_PPC64_TOCSAVE, |
| 1300 | 0, /* rightshift */ | |
| 1301 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1302 | 32, /* bitsize */ | |
| 1303 | FALSE, /* pc_relative */ | |
| 1304 | 0, /* bitpos */ | |
| 1305 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1306 | bfd_elf_generic_reloc, /* special_function */ | |
| 1307 | "R_PPC64_TOCSAVE", /* name */ | |
| 1308 | FALSE, /* partial_inplace */ | |
| 1309 | 0, /* src_mask */ | |
| 1310 | 0, /* dst_mask */ | |
| 1311 | FALSE), /* pcrel_offset */ | |
| 1312 | ||
| 411e1bfb AM |
1313 | /* Computes the load module index of the load module that contains the |
| 1314 | definition of its TLS sym. */ | |
| 1315 | HOWTO (R_PPC64_DTPMOD64, | |
| 1316 | 0, /* rightshift */ | |
| 1317 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1318 | 64, /* bitsize */ | |
| 1319 | FALSE, /* pc_relative */ | |
| 1320 | 0, /* bitpos */ | |
| 1321 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1322 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1323 | "R_PPC64_DTPMOD64", /* name */ | |
| 1324 | FALSE, /* partial_inplace */ | |
| 1325 | 0, /* src_mask */ | |
| 1326 | ONES (64), /* dst_mask */ | |
| 1327 | FALSE), /* pcrel_offset */ | |
| 1328 | ||
| 1329 | /* Computes a dtv-relative displacement, the difference between the value | |
| 1330 | of sym+add and the base address of the thread-local storage block that | |
| 1331 | contains the definition of sym, minus 0x8000. */ | |
| 1332 | HOWTO (R_PPC64_DTPREL64, | |
| 1333 | 0, /* rightshift */ | |
| 1334 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1335 | 64, /* bitsize */ | |
| 1336 | FALSE, /* pc_relative */ | |
| 1337 | 0, /* bitpos */ | |
| 1338 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1339 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1340 | "R_PPC64_DTPREL64", /* name */ | |
| 1341 | FALSE, /* partial_inplace */ | |
| 1342 | 0, /* src_mask */ | |
| 1343 | ONES (64), /* dst_mask */ | |
| 1344 | FALSE), /* pcrel_offset */ | |
| 1345 | ||
| 1346 | /* A 16 bit dtprel reloc. */ | |
| 1347 | HOWTO (R_PPC64_DTPREL16, | |
| 1348 | 0, /* rightshift */ | |
| 1349 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1350 | 16, /* bitsize */ | |
| 1351 | FALSE, /* pc_relative */ | |
| 1352 | 0, /* bitpos */ | |
| 1353 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1354 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1355 | "R_PPC64_DTPREL16", /* name */ | |
| 1356 | FALSE, /* partial_inplace */ | |
| 1357 | 0, /* src_mask */ | |
| 1358 | 0xffff, /* dst_mask */ | |
| 1359 | FALSE), /* pcrel_offset */ | |
| 1360 | ||
| 1361 | /* Like DTPREL16, but no overflow. */ | |
| 1362 | HOWTO (R_PPC64_DTPREL16_LO, | |
| 1363 | 0, /* rightshift */ | |
| 1364 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1365 | 16, /* bitsize */ | |
| 1366 | FALSE, /* pc_relative */ | |
| 1367 | 0, /* bitpos */ | |
| 1368 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1369 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1370 | "R_PPC64_DTPREL16_LO", /* name */ | |
| 1371 | FALSE, /* partial_inplace */ | |
| 1372 | 0, /* src_mask */ | |
| 1373 | 0xffff, /* dst_mask */ | |
| 1374 | FALSE), /* pcrel_offset */ | |
| 1375 | ||
| 1376 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
| 1377 | HOWTO (R_PPC64_DTPREL16_HI, | |
| 1378 | 16, /* rightshift */ | |
| 1379 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1380 | 16, /* bitsize */ | |
| 1381 | FALSE, /* pc_relative */ | |
| 1382 | 0, /* bitpos */ | |
| f9c6b907 | 1383 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1384 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1385 | "R_PPC64_DTPREL16_HI", /* name */ | |
| 1386 | FALSE, /* partial_inplace */ | |
| 1387 | 0, /* src_mask */ | |
| 1388 | 0xffff, /* dst_mask */ | |
| 1389 | FALSE), /* pcrel_offset */ | |
| 1390 | ||
| 1391 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
| 1392 | HOWTO (R_PPC64_DTPREL16_HA, | |
| 1393 | 16, /* rightshift */ | |
| 1394 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1395 | 16, /* bitsize */ | |
| 1396 | FALSE, /* pc_relative */ | |
| 1397 | 0, /* bitpos */ | |
| f9c6b907 | 1398 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1399 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1400 | "R_PPC64_DTPREL16_HA", /* name */ | |
| 1401 | FALSE, /* partial_inplace */ | |
| 1402 | 0, /* src_mask */ | |
| 1403 | 0xffff, /* dst_mask */ | |
| 1404 | FALSE), /* pcrel_offset */ | |
| 1405 | ||
| 1406 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
| 1407 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
| 1408 | 32, /* rightshift */ | |
| 1409 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1410 | 16, /* bitsize */ | |
| 1411 | FALSE, /* pc_relative */ | |
| 1412 | 0, /* bitpos */ | |
| 1413 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1414 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1415 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
| 1416 | FALSE, /* partial_inplace */ | |
| 1417 | 0, /* src_mask */ | |
| 1418 | 0xffff, /* dst_mask */ | |
| 1419 | FALSE), /* pcrel_offset */ | |
| 1420 | ||
| 1421 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1422 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
| 1423 | 32, /* rightshift */ | |
| 1424 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1425 | 16, /* bitsize */ | |
| 1426 | FALSE, /* pc_relative */ | |
| 1427 | 0, /* bitpos */ | |
| 1428 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1429 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1430 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
| 1431 | FALSE, /* partial_inplace */ | |
| 1432 | 0, /* src_mask */ | |
| 1433 | 0xffff, /* dst_mask */ | |
| 1434 | FALSE), /* pcrel_offset */ | |
| 1435 | ||
| 1436 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1437 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
| 1438 | 48, /* rightshift */ | |
| 1439 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1440 | 16, /* bitsize */ | |
| 1441 | FALSE, /* pc_relative */ | |
| 1442 | 0, /* bitpos */ | |
| 1443 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1444 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1445 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
| 1446 | FALSE, /* partial_inplace */ | |
| 1447 | 0, /* src_mask */ | |
| 1448 | 0xffff, /* dst_mask */ | |
| 1449 | FALSE), /* pcrel_offset */ | |
| 1450 | ||
| 1451 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1452 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
| 1453 | 48, /* rightshift */ | |
| 1454 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1455 | 16, /* bitsize */ | |
| 1456 | FALSE, /* pc_relative */ | |
| 1457 | 0, /* bitpos */ | |
| 1458 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1459 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1460 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
| 1461 | FALSE, /* partial_inplace */ | |
| 1462 | 0, /* src_mask */ | |
| 1463 | 0xffff, /* dst_mask */ | |
| 1464 | FALSE), /* pcrel_offset */ | |
| 1465 | ||
| 1466 | /* Like DTPREL16, but for insns with a DS field. */ | |
| 1467 | HOWTO (R_PPC64_DTPREL16_DS, | |
| 1468 | 0, /* rightshift */ | |
| 1469 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1470 | 16, /* bitsize */ | |
| 1471 | FALSE, /* pc_relative */ | |
| 1472 | 0, /* bitpos */ | |
| 1473 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1474 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1475 | "R_PPC64_DTPREL16_DS", /* name */ | |
| 1476 | FALSE, /* partial_inplace */ | |
| 1477 | 0, /* src_mask */ | |
| 1478 | 0xfffc, /* dst_mask */ | |
| 1479 | FALSE), /* pcrel_offset */ | |
| 1480 | ||
| 1481 | /* Like DTPREL16_DS, but no overflow. */ | |
| 1482 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
| 1483 | 0, /* rightshift */ | |
| 1484 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1485 | 16, /* bitsize */ | |
| 1486 | FALSE, /* pc_relative */ | |
| 1487 | 0, /* bitpos */ | |
| 1488 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1489 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1490 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
| 1491 | FALSE, /* partial_inplace */ | |
| 1492 | 0, /* src_mask */ | |
| 1493 | 0xfffc, /* dst_mask */ | |
| 1494 | FALSE), /* pcrel_offset */ | |
| 1495 | ||
| 1496 | /* Computes a tp-relative displacement, the difference between the value of | |
| 1497 | sym+add and the value of the thread pointer (r13). */ | |
| 1498 | HOWTO (R_PPC64_TPREL64, | |
| 1499 | 0, /* rightshift */ | |
| 1500 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1501 | 64, /* bitsize */ | |
| 1502 | FALSE, /* pc_relative */ | |
| 1503 | 0, /* bitpos */ | |
| 1504 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1505 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1506 | "R_PPC64_TPREL64", /* name */ | |
| 1507 | FALSE, /* partial_inplace */ | |
| 1508 | 0, /* src_mask */ | |
| 1509 | ONES (64), /* dst_mask */ | |
| 1510 | FALSE), /* pcrel_offset */ | |
| 1511 | ||
| 1512 | /* A 16 bit tprel reloc. */ | |
| 1513 | HOWTO (R_PPC64_TPREL16, | |
| 1514 | 0, /* rightshift */ | |
| 1515 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1516 | 16, /* bitsize */ | |
| 1517 | FALSE, /* pc_relative */ | |
| 1518 | 0, /* bitpos */ | |
| 1519 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1520 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1521 | "R_PPC64_TPREL16", /* name */ | |
| 1522 | FALSE, /* partial_inplace */ | |
| 1523 | 0, /* src_mask */ | |
| 1524 | 0xffff, /* dst_mask */ | |
| 1525 | FALSE), /* pcrel_offset */ | |
| 1526 | ||
| 1527 | /* Like TPREL16, but no overflow. */ | |
| 1528 | HOWTO (R_PPC64_TPREL16_LO, | |
| 1529 | 0, /* rightshift */ | |
| 1530 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1531 | 16, /* bitsize */ | |
| 1532 | FALSE, /* pc_relative */ | |
| 1533 | 0, /* bitpos */ | |
| 1534 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1535 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1536 | "R_PPC64_TPREL16_LO", /* name */ | |
| 1537 | FALSE, /* partial_inplace */ | |
| 1538 | 0, /* src_mask */ | |
| 1539 | 0xffff, /* dst_mask */ | |
| 1540 | FALSE), /* pcrel_offset */ | |
| 1541 | ||
| 1542 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
| 1543 | HOWTO (R_PPC64_TPREL16_HI, | |
| 1544 | 16, /* rightshift */ | |
| 1545 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1546 | 16, /* bitsize */ | |
| 1547 | FALSE, /* pc_relative */ | |
| 1548 | 0, /* bitpos */ | |
| f9c6b907 | 1549 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1550 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1551 | "R_PPC64_TPREL16_HI", /* name */ | |
| 1552 | FALSE, /* partial_inplace */ | |
| 1553 | 0, /* src_mask */ | |
| 1554 | 0xffff, /* dst_mask */ | |
| 1555 | FALSE), /* pcrel_offset */ | |
| 1556 | ||
| 1557 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
| 1558 | HOWTO (R_PPC64_TPREL16_HA, | |
| 1559 | 16, /* rightshift */ | |
| 1560 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1561 | 16, /* bitsize */ | |
| 1562 | FALSE, /* pc_relative */ | |
| 1563 | 0, /* bitpos */ | |
| f9c6b907 | 1564 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1565 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1566 | "R_PPC64_TPREL16_HA", /* name */ | |
| 1567 | FALSE, /* partial_inplace */ | |
| 1568 | 0, /* src_mask */ | |
| 1569 | 0xffff, /* dst_mask */ | |
| 1570 | FALSE), /* pcrel_offset */ | |
| 1571 | ||
| 1572 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
| 1573 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
| 1574 | 32, /* rightshift */ | |
| 1575 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1576 | 16, /* bitsize */ | |
| 1577 | FALSE, /* pc_relative */ | |
| 1578 | 0, /* bitpos */ | |
| 1579 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1580 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1581 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
| 1582 | FALSE, /* partial_inplace */ | |
| 1583 | 0, /* src_mask */ | |
| 1584 | 0xffff, /* dst_mask */ | |
| 1585 | FALSE), /* pcrel_offset */ | |
| 1586 | ||
| 1587 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1588 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
| 1589 | 32, /* rightshift */ | |
| 1590 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1591 | 16, /* bitsize */ | |
| 1592 | FALSE, /* pc_relative */ | |
| 1593 | 0, /* bitpos */ | |
| 1594 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1595 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1596 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
| 1597 | FALSE, /* partial_inplace */ | |
| 1598 | 0, /* src_mask */ | |
| 1599 | 0xffff, /* dst_mask */ | |
| 1600 | FALSE), /* pcrel_offset */ | |
| 1601 | ||
| 1602 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1603 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
| 1604 | 48, /* rightshift */ | |
| 1605 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1606 | 16, /* bitsize */ | |
| 1607 | FALSE, /* pc_relative */ | |
| 1608 | 0, /* bitpos */ | |
| 1609 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1610 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1611 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
| 1612 | FALSE, /* partial_inplace */ | |
| 1613 | 0, /* src_mask */ | |
| 1614 | 0xffff, /* dst_mask */ | |
| 1615 | FALSE), /* pcrel_offset */ | |
| 1616 | ||
| 1617 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1618 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
| 1619 | 48, /* rightshift */ | |
| 1620 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1621 | 16, /* bitsize */ | |
| 1622 | FALSE, /* pc_relative */ | |
| 1623 | 0, /* bitpos */ | |
| 1624 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1625 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1626 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
| 1627 | FALSE, /* partial_inplace */ | |
| 1628 | 0, /* src_mask */ | |
| 1629 | 0xffff, /* dst_mask */ | |
| 1630 | FALSE), /* pcrel_offset */ | |
| 1631 | ||
| 1632 | /* Like TPREL16, but for insns with a DS field. */ | |
| 1633 | HOWTO (R_PPC64_TPREL16_DS, | |
| 1634 | 0, /* rightshift */ | |
| 1635 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1636 | 16, /* bitsize */ | |
| 1637 | FALSE, /* pc_relative */ | |
| 1638 | 0, /* bitpos */ | |
| 1639 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1640 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1641 | "R_PPC64_TPREL16_DS", /* name */ | |
| 1642 | FALSE, /* partial_inplace */ | |
| 1643 | 0, /* src_mask */ | |
| 1644 | 0xfffc, /* dst_mask */ | |
| 1645 | FALSE), /* pcrel_offset */ | |
| 1646 | ||
| 1647 | /* Like TPREL16_DS, but no overflow. */ | |
| 1648 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
| 1649 | 0, /* rightshift */ | |
| 1650 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1651 | 16, /* bitsize */ | |
| 1652 | FALSE, /* pc_relative */ | |
| 1653 | 0, /* bitpos */ | |
| 1654 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1655 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1656 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
| 1657 | FALSE, /* partial_inplace */ | |
| 1658 | 0, /* src_mask */ | |
| 1659 | 0xfffc, /* dst_mask */ | |
| 1660 | FALSE), /* pcrel_offset */ | |
| 1661 | ||
| 1662 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
| 1663 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
| 1664 | to the first entry relative to the TOC base (r2). */ | |
| 1665 | HOWTO (R_PPC64_GOT_TLSGD16, | |
| 1666 | 0, /* rightshift */ | |
| 1667 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1668 | 16, /* bitsize */ | |
| 1669 | FALSE, /* pc_relative */ | |
| 1670 | 0, /* bitpos */ | |
| 1671 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1672 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1673 | "R_PPC64_GOT_TLSGD16", /* name */ | |
| b34976b6 | 1674 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1675 | 0, /* src_mask */ |
| 1676 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1677 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1678 | |
| 411e1bfb AM |
1679 | /* Like GOT_TLSGD16, but no overflow. */ |
| 1680 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
| 5bd4f169 AM |
1681 | 0, /* rightshift */ |
| 1682 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1683 | 16, /* bitsize */ | |
| b34976b6 | 1684 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1685 | 0, /* bitpos */ |
| 1686 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1687 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1688 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
| b34976b6 | 1689 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1690 | 0, /* src_mask */ |
| 1691 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1692 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1693 | |
| 411e1bfb AM |
1694 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
| 1695 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
| 5bd4f169 AM |
1696 | 16, /* rightshift */ |
| 1697 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1698 | 16, /* bitsize */ | |
| b34976b6 | 1699 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1700 | 0, /* bitpos */ |
| f9c6b907 | 1701 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1702 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1703 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
| b34976b6 | 1704 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1705 | 0, /* src_mask */ |
| 1706 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1707 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1708 | |
| 411e1bfb AM |
1709 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
| 1710 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
| 5bd4f169 AM |
1711 | 16, /* rightshift */ |
| 1712 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1713 | 16, /* bitsize */ | |
| b34976b6 | 1714 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1715 | 0, /* bitpos */ |
| f9c6b907 | 1716 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1717 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1718 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
| b34976b6 | 1719 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1720 | 0, /* src_mask */ |
| 1721 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1722 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1723 | |
| 411e1bfb AM |
1724 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
| 1725 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
| 1726 | first entry relative to the TOC base (r2). */ | |
| 1727 | HOWTO (R_PPC64_GOT_TLSLD16, | |
| 5bd4f169 AM |
1728 | 0, /* rightshift */ |
| 1729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1730 | 16, /* bitsize */ | |
| b34976b6 | 1731 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1732 | 0, /* bitpos */ |
| 411e1bfb AM |
1733 | complain_overflow_signed, /* complain_on_overflow */ |
| 1734 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1735 | "R_PPC64_GOT_TLSLD16", /* name */ | |
| b34976b6 | 1736 | FALSE, /* partial_inplace */ |
| d006db6c | 1737 | 0, /* src_mask */ |
| 411e1bfb | 1738 | 0xffff, /* dst_mask */ |
| b34976b6 | 1739 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1740 | |
| 411e1bfb AM |
1741 | /* Like GOT_TLSLD16, but no overflow. */ |
| 1742 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
| 5bd4f169 AM |
1743 | 0, /* rightshift */ |
| 1744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1745 | 16, /* bitsize */ | |
| b34976b6 | 1746 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1747 | 0, /* bitpos */ |
| 411e1bfb AM |
1748 | complain_overflow_dont, /* complain_on_overflow */ |
| 1749 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1750 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
| b34976b6 | 1751 | FALSE, /* partial_inplace */ |
| d006db6c | 1752 | 0, /* src_mask */ |
| 411e1bfb | 1753 | 0xffff, /* dst_mask */ |
| b34976b6 | 1754 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1755 | |
| 411e1bfb AM |
1756 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
| 1757 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
| 1758 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1759 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1760 | 16, /* bitsize */ | |
| b34976b6 | 1761 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1762 | 0, /* bitpos */ |
| f9c6b907 | 1763 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1764 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1765 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
| b34976b6 | 1766 | FALSE, /* partial_inplace */ |
| d006db6c | 1767 | 0, /* src_mask */ |
| 411e1bfb | 1768 | 0xffff, /* dst_mask */ |
| b34976b6 | 1769 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1770 | |
| 411e1bfb AM |
1771 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
| 1772 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
| 1773 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1774 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1775 | 16, /* bitsize */ | |
| b34976b6 | 1776 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1777 | 0, /* bitpos */ |
| f9c6b907 | 1778 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1779 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1780 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
| b34976b6 | 1781 | FALSE, /* partial_inplace */ |
| d006db6c | 1782 | 0, /* src_mask */ |
| 411e1bfb | 1783 | 0xffff, /* dst_mask */ |
| b34976b6 | 1784 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1785 | |
| 411e1bfb AM |
1786 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
| 1787 | the offset to the entry relative to the TOC base (r2). */ | |
| 1788 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
| 5bd4f169 AM |
1789 | 0, /* rightshift */ |
| 1790 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1791 | 16, /* bitsize */ | |
| b34976b6 | 1792 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1793 | 0, /* bitpos */ |
| 411e1bfb | 1794 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1795 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1796 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
| b34976b6 | 1797 | FALSE, /* partial_inplace */ |
| d006db6c | 1798 | 0, /* src_mask */ |
| 5bd4f169 | 1799 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1800 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1801 | |
| 411e1bfb AM |
1802 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
| 1803 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
| 5bd4f169 | 1804 | 0, /* rightshift */ |
| c061c2d8 AM |
1805 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1806 | 16, /* bitsize */ | |
| b34976b6 | 1807 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1808 | 0, /* bitpos */ |
| 411e1bfb AM |
1809 | complain_overflow_dont, /* complain_on_overflow */ |
| 1810 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1811 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
| b34976b6 | 1812 | FALSE, /* partial_inplace */ |
| d006db6c | 1813 | 0, /* src_mask */ |
| c061c2d8 | 1814 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1815 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1816 | |
| 411e1bfb AM |
1817 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1818 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
| 1819 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1821 | 16, /* bitsize */ | |
| b34976b6 | 1822 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1823 | 0, /* bitpos */ |
| f9c6b907 | 1824 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1825 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1826 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
| b34976b6 | 1827 | FALSE, /* partial_inplace */ |
| d006db6c | 1828 | 0, /* src_mask */ |
| 411e1bfb | 1829 | 0xffff, /* dst_mask */ |
| b34976b6 | 1830 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1831 | |
| 411e1bfb AM |
1832 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
| 1833 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
| 1834 | 16, /* rightshift */ | |
| 1835 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1836 | 16, /* bitsize */ | |
| 1837 | FALSE, /* pc_relative */ | |
| 1838 | 0, /* bitpos */ | |
| f9c6b907 | 1839 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1840 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1841 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
| 1842 | FALSE, /* partial_inplace */ | |
| 1843 | 0, /* src_mask */ | |
| 1844 | 0xffff, /* dst_mask */ | |
| 1845 | FALSE), /* pcrel_offset */ | |
| 1846 | ||
| 1847 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
| 1848 | offset to the entry relative to the TOC base (r2). */ | |
| 1849 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
| 5bd4f169 AM |
1850 | 0, /* rightshift */ |
| 1851 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1852 | 16, /* bitsize */ | |
| b34976b6 | 1853 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1854 | 0, /* bitpos */ |
| 1855 | complain_overflow_signed, /* complain_on_overflow */ | |
| 411e1bfb AM |
1856 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1857 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
| b34976b6 | 1858 | FALSE, /* partial_inplace */ |
| d006db6c | 1859 | 0, /* src_mask */ |
| ad8e1ba5 | 1860 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1861 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1862 | |
| 411e1bfb AM |
1863 | /* Like GOT_TPREL16_DS, but no overflow. */ |
| 1864 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
| 5bd4f169 AM |
1865 | 0, /* rightshift */ |
| 1866 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1867 | 16, /* bitsize */ | |
| b34976b6 | 1868 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1869 | 0, /* bitpos */ |
| 1870 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1871 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1872 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
| b34976b6 | 1873 | FALSE, /* partial_inplace */ |
| d006db6c | 1874 | 0, /* src_mask */ |
| ad8e1ba5 | 1875 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1876 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1877 | |
| 411e1bfb AM |
1878 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1879 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
| 1880 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1881 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1882 | 16, /* bitsize */ | |
| b34976b6 | 1883 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1884 | 0, /* bitpos */ |
| f9c6b907 | 1885 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1886 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1887 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
| b34976b6 | 1888 | FALSE, /* partial_inplace */ |
| d006db6c | 1889 | 0, /* src_mask */ |
| 411e1bfb | 1890 | 0xffff, /* dst_mask */ |
| b34976b6 | 1891 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1892 | |
| 411e1bfb AM |
1893 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
| 1894 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
| 1895 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1896 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1897 | 16, /* bitsize */ | |
| b34976b6 | 1898 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1899 | 0, /* bitpos */ |
| f9c6b907 | 1900 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1901 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1902 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
| b34976b6 | 1903 | FALSE, /* partial_inplace */ |
| d006db6c | 1904 | 0, /* src_mask */ |
| 411e1bfb | 1905 | 0xffff, /* dst_mask */ |
| b34976b6 | 1906 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1907 | |
| 25f23106 AM |
1908 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
| 1909 | 0, /* rightshift */ | |
| 1910 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1911 | 0, /* bitsize */ | |
| 1912 | FALSE, /* pc_relative */ | |
| 1913 | 0, /* bitpos */ | |
| 1914 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1915 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1916 | "R_PPC64_JMP_IREL", /* name */ | |
| 1917 | FALSE, /* partial_inplace */ | |
| 1918 | 0, /* src_mask */ | |
| 1919 | 0, /* dst_mask */ | |
| 1920 | FALSE), /* pcrel_offset */ | |
| 1921 | ||
| e054468f AM |
1922 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
| 1923 | 0, /* rightshift */ | |
| 1924 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1925 | 64, /* bitsize */ | |
| 1926 | FALSE, /* pc_relative */ | |
| 1927 | 0, /* bitpos */ | |
| 1928 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1929 | bfd_elf_generic_reloc, /* special_function */ | |
| 1930 | "R_PPC64_IRELATIVE", /* name */ | |
| 1931 | FALSE, /* partial_inplace */ | |
| 1932 | 0, /* src_mask */ | |
| 1933 | ONES (64), /* dst_mask */ | |
| 1934 | FALSE), /* pcrel_offset */ | |
| 1935 | ||
| 25f23106 AM |
1936 | /* A 16 bit relative relocation. */ |
| 1937 | HOWTO (R_PPC64_REL16, /* type */ | |
| 1938 | 0, /* rightshift */ | |
| 1939 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1940 | 16, /* bitsize */ | |
| 1941 | TRUE, /* pc_relative */ | |
| 1942 | 0, /* bitpos */ | |
| 1943 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1944 | bfd_elf_generic_reloc, /* special_function */ | |
| 1945 | "R_PPC64_REL16", /* name */ | |
| 1946 | FALSE, /* partial_inplace */ | |
| 1947 | 0, /* src_mask */ | |
| 1948 | 0xffff, /* dst_mask */ | |
| 1949 | TRUE), /* pcrel_offset */ | |
| 1950 | ||
| 1951 | /* A 16 bit relative relocation without overflow. */ | |
| 1952 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
| 1953 | 0, /* rightshift */ | |
| 1954 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1955 | 16, /* bitsize */ | |
| 1956 | TRUE, /* pc_relative */ | |
| 1957 | 0, /* bitpos */ | |
| 1958 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1959 | bfd_elf_generic_reloc, /* special_function */ | |
| 1960 | "R_PPC64_REL16_LO", /* name */ | |
| 1961 | FALSE, /* partial_inplace */ | |
| 1962 | 0, /* src_mask */ | |
| 1963 | 0xffff, /* dst_mask */ | |
| 1964 | TRUE), /* pcrel_offset */ | |
| 1965 | ||
| 1966 | /* The high order 16 bits of a relative address. */ | |
| 1967 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
| 1968 | 16, /* rightshift */ | |
| 1969 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1970 | 16, /* bitsize */ | |
| 1971 | TRUE, /* pc_relative */ | |
| 1972 | 0, /* bitpos */ | |
| f9c6b907 | 1973 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1974 | bfd_elf_generic_reloc, /* special_function */ |
| 1975 | "R_PPC64_REL16_HI", /* name */ | |
| 1976 | FALSE, /* partial_inplace */ | |
| 1977 | 0, /* src_mask */ | |
| 1978 | 0xffff, /* dst_mask */ | |
| 1979 | TRUE), /* pcrel_offset */ | |
| 1980 | ||
| 1981 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
| 1982 | the low 16 bits, treated as a signed number, is negative. */ | |
| 1983 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
| 1984 | 16, /* rightshift */ | |
| 1985 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1986 | 16, /* bitsize */ | |
| 1987 | TRUE, /* pc_relative */ | |
| 1988 | 0, /* bitpos */ | |
| f9c6b907 | 1989 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1990 | ppc64_elf_ha_reloc, /* special_function */ |
| 1991 | "R_PPC64_REL16_HA", /* name */ | |
| 1992 | FALSE, /* partial_inplace */ | |
| 1993 | 0, /* src_mask */ | |
| 1994 | 0xffff, /* dst_mask */ | |
| 1995 | TRUE), /* pcrel_offset */ | |
| 1996 | ||
| f9c6b907 AM |
1997 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
| 1998 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
| 1999 | 16, /* rightshift */ | |
| 2000 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2001 | 16, /* bitsize */ | |
| 2002 | FALSE, /* pc_relative */ | |
| 2003 | 0, /* bitpos */ | |
| 2004 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2005 | bfd_elf_generic_reloc, /* special_function */ | |
| 2006 | "R_PPC64_ADDR16_HIGH", /* name */ | |
| 2007 | FALSE, /* partial_inplace */ | |
| 2008 | 0, /* src_mask */ | |
| 2009 | 0xffff, /* dst_mask */ | |
| 2010 | FALSE), /* pcrel_offset */ | |
| 2011 | ||
| 2012 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
| 2013 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
| 2014 | 16, /* rightshift */ | |
| 2015 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2016 | 16, /* bitsize */ | |
| 2017 | FALSE, /* pc_relative */ | |
| 2018 | 0, /* bitpos */ | |
| 2019 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2020 | ppc64_elf_ha_reloc, /* special_function */ | |
| 2021 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
| 2022 | FALSE, /* partial_inplace */ | |
| 2023 | 0, /* src_mask */ | |
| 2024 | 0xffff, /* dst_mask */ | |
| 2025 | FALSE), /* pcrel_offset */ | |
| 2026 | ||
| 2027 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
| 2028 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
| 2029 | 16, /* rightshift */ | |
| 2030 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2031 | 16, /* bitsize */ | |
| 2032 | FALSE, /* pc_relative */ | |
| 2033 | 0, /* bitpos */ | |
| 2034 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2035 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2036 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
| 2037 | FALSE, /* partial_inplace */ | |
| 2038 | 0, /* src_mask */ | |
| 2039 | 0xffff, /* dst_mask */ | |
| 2040 | FALSE), /* pcrel_offset */ | |
| 2041 | ||
| 2042 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
| 2043 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
| 2044 | 16, /* rightshift */ | |
| 2045 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2046 | 16, /* bitsize */ | |
| 2047 | FALSE, /* pc_relative */ | |
| 2048 | 0, /* bitpos */ | |
| 2049 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2050 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2051 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
| 2052 | FALSE, /* partial_inplace */ | |
| 2053 | 0, /* src_mask */ | |
| 2054 | 0xffff, /* dst_mask */ | |
| 2055 | FALSE), /* pcrel_offset */ | |
| 2056 | ||
| 2057 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
| 2058 | HOWTO (R_PPC64_TPREL16_HIGH, | |
| 2059 | 16, /* rightshift */ | |
| 2060 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2061 | 16, /* bitsize */ | |
| 2062 | FALSE, /* pc_relative */ | |
| 2063 | 0, /* bitpos */ | |
| 2064 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2065 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2066 | "R_PPC64_TPREL16_HIGH", /* name */ | |
| 2067 | FALSE, /* partial_inplace */ | |
| 2068 | 0, /* src_mask */ | |
| 2069 | 0xffff, /* dst_mask */ | |
| 2070 | FALSE), /* pcrel_offset */ | |
| 2071 | ||
| 2072 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
| 2073 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
| 2074 | 16, /* rightshift */ | |
| 2075 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2076 | 16, /* bitsize */ | |
| 2077 | FALSE, /* pc_relative */ | |
| 2078 | 0, /* bitpos */ | |
| 2079 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2080 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2081 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
| 2082 | FALSE, /* partial_inplace */ | |
| 2083 | 0, /* src_mask */ | |
| 2084 | 0xffff, /* dst_mask */ | |
| 2085 | FALSE), /* pcrel_offset */ | |
| 2086 | ||
| 5bd4f169 AM |
2087 | /* GNU extension to record C++ vtable hierarchy. */ |
| 2088 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
| 2089 | 0, /* rightshift */ | |
| 2090 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2091 | 0, /* bitsize */ | |
| b34976b6 | 2092 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2093 | 0, /* bitpos */ |
| 2094 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2095 | NULL, /* special_function */ | |
| 2096 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
| b34976b6 | 2097 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2098 | 0, /* src_mask */ |
| 2099 | 0, /* dst_mask */ | |
| b34976b6 | 2100 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2101 | |
| 2102 | /* GNU extension to record C++ vtable member usage. */ | |
| 2103 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
| 2104 | 0, /* rightshift */ | |
| 2105 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2106 | 0, /* bitsize */ | |
| b34976b6 | 2107 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2108 | 0, /* bitpos */ |
| 2109 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2110 | NULL, /* special_function */ | |
| 2111 | "R_PPC64_GNU_VTENTRY", /* name */ | |
| b34976b6 | 2112 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2113 | 0, /* src_mask */ |
| 2114 | 0, /* dst_mask */ | |
| b34976b6 | 2115 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2116 | }; |
| 2117 | ||
| 2118 | \f | |
| 2119 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
| 2120 | be done. */ | |
| 2121 | ||
| 2122 | static void | |
| 4ce794b7 | 2123 | ppc_howto_init (void) |
| 5bd4f169 AM |
2124 | { |
| 2125 | unsigned int i, type; | |
| 2126 | ||
| 2127 | for (i = 0; | |
| 2128 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2129 | i++) | |
| 2130 | { | |
| 2131 | type = ppc64_elf_howto_raw[i].type; | |
| 2132 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
| 2133 | / sizeof (ppc64_elf_howto_table[0]))); | |
| 2134 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
| 2135 | } | |
| 2136 | } | |
| 2137 | ||
| 2138 | static reloc_howto_type * | |
| 4ce794b7 AM |
2139 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 2140 | bfd_reloc_code_real_type code) | |
| 5bd4f169 | 2141 | { |
| 411e1bfb | 2142 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
| 5bd4f169 AM |
2143 | |
| 2144 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 2145 | /* Initialize howto table if needed. */ | |
| 2146 | ppc_howto_init (); | |
| 2147 | ||
| 4ce794b7 | 2148 | switch (code) |
| 5bd4f169 AM |
2149 | { |
| 2150 | default: | |
| 4ce794b7 | 2151 | return NULL; |
| 5bd4f169 | 2152 | |
| 411e1bfb AM |
2153 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
| 2154 | break; | |
| 2155 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
| 2156 | break; | |
| 2157 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
| 2158 | break; | |
| 2159 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
| 2160 | break; | |
| 2161 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
| 2162 | break; | |
| 2163 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
| 2164 | break; | |
| f9c6b907 AM |
2165 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
| 2166 | break; | |
| 411e1bfb | 2167 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
| 5bd4f169 | 2168 | break; |
| f9c6b907 AM |
2169 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
| 2170 | break; | |
| 411e1bfb | 2171 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
| 5bd4f169 | 2172 | break; |
| 411e1bfb | 2173 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
| 5bd4f169 | 2174 | break; |
| 411e1bfb | 2175 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
| 5bd4f169 | 2176 | break; |
| 411e1bfb | 2177 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
| 5bd4f169 | 2178 | break; |
| 411e1bfb | 2179 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
| 5bd4f169 | 2180 | break; |
| 411e1bfb | 2181 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
| 5bd4f169 | 2182 | break; |
| 411e1bfb | 2183 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
| 5bd4f169 | 2184 | break; |
| 411e1bfb | 2185 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
| 5bd4f169 | 2186 | break; |
| 411e1bfb | 2187 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
| 5bd4f169 | 2188 | break; |
| 411e1bfb | 2189 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
| 5bd4f169 | 2190 | break; |
| 411e1bfb | 2191 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
| 5bd4f169 | 2192 | break; |
| 411e1bfb | 2193 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
| 5bd4f169 | 2194 | break; |
| 411e1bfb | 2195 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
| 5bd4f169 | 2196 | break; |
| 411e1bfb | 2197 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
| 5bd4f169 | 2198 | break; |
| 411e1bfb | 2199 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
| 5bd4f169 | 2200 | break; |
| 411e1bfb | 2201 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
| 5bd4f169 | 2202 | break; |
| 411e1bfb | 2203 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
| 5bd4f169 | 2204 | break; |
| 411e1bfb | 2205 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
| 5bd4f169 | 2206 | break; |
| 411e1bfb | 2207 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
| 5bd4f169 | 2208 | break; |
| 411e1bfb | 2209 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
| 5bd4f169 | 2210 | break; |
| 411e1bfb | 2211 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
| 5bd4f169 | 2212 | break; |
| 411e1bfb | 2213 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
| 5bd4f169 | 2214 | break; |
| 411e1bfb | 2215 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
| 5bd4f169 | 2216 | break; |
| 411e1bfb | 2217 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2218 | break; |
| 411e1bfb | 2219 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2220 | break; |
| 411e1bfb | 2221 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
| 5bd4f169 | 2222 | break; |
| 411e1bfb | 2223 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
| 5bd4f169 | 2224 | break; |
| 411e1bfb | 2225 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
| 5bd4f169 | 2226 | break; |
| 411e1bfb | 2227 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
| 5bd4f169 | 2228 | break; |
| 411e1bfb | 2229 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
| 5bd4f169 | 2230 | break; |
| 411e1bfb | 2231 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
| 5bd4f169 | 2232 | break; |
| 411e1bfb | 2233 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
| 5bd4f169 | 2234 | break; |
| 411e1bfb | 2235 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
| 5bd4f169 | 2236 | break; |
| 411e1bfb | 2237 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
| 5bd4f169 | 2238 | break; |
| 411e1bfb | 2239 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
| 5bd4f169 | 2240 | break; |
| 411e1bfb | 2241 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
| 5bd4f169 | 2242 | break; |
| 411e1bfb | 2243 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
| 5bd4f169 | 2244 | break; |
| 411e1bfb | 2245 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
| 5bd4f169 | 2246 | break; |
| 411e1bfb | 2247 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
| 5bd4f169 | 2248 | break; |
| 411e1bfb | 2249 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
| 5bd4f169 | 2250 | break; |
| 411e1bfb | 2251 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
| 5bd4f169 | 2252 | break; |
| 411e1bfb | 2253 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
| 5bd4f169 | 2254 | break; |
| 411e1bfb | 2255 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
| 5bd4f169 | 2256 | break; |
| 411e1bfb | 2257 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
| 5bd4f169 | 2258 | break; |
| 411e1bfb | 2259 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
| 5bd4f169 | 2260 | break; |
| 411e1bfb | 2261 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
| 5bd4f169 | 2262 | break; |
| 411e1bfb | 2263 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
| 5bd4f169 | 2264 | break; |
| 411e1bfb | 2265 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
| 5bd4f169 | 2266 | break; |
| 411e1bfb | 2267 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
| 5bd4f169 | 2268 | break; |
| 411e1bfb | 2269 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
| 5bd4f169 | 2270 | break; |
| 411e1bfb | 2271 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
| 5bd4f169 | 2272 | break; |
| 411e1bfb | 2273 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
| 5bd4f169 | 2274 | break; |
| 411e1bfb | 2275 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
| 5bd4f169 | 2276 | break; |
| 727fc41e AM |
2277 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
| 2278 | break; | |
| 2279 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
| 2280 | break; | |
| 411e1bfb | 2281 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
| 5bd4f169 | 2282 | break; |
| 411e1bfb | 2283 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
| 5bd4f169 | 2284 | break; |
| 411e1bfb | 2285 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
| 5bd4f169 | 2286 | break; |
| 411e1bfb | 2287 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
| 5bd4f169 | 2288 | break; |
| f9c6b907 AM |
2289 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
| 2290 | break; | |
| 411e1bfb | 2291 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
| 5bd4f169 | 2292 | break; |
| f9c6b907 AM |
2293 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
| 2294 | break; | |
| 411e1bfb | 2295 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
| 5bd4f169 | 2296 | break; |
| 411e1bfb AM |
2297 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
| 2298 | break; | |
| 2299 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
| 2300 | break; | |
| 2301 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
| 2302 | break; | |
| f9c6b907 AM |
2303 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
| 2304 | break; | |
| 411e1bfb AM |
2305 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
| 2306 | break; | |
| f9c6b907 AM |
2307 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
| 2308 | break; | |
| 411e1bfb AM |
2309 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
| 2310 | break; | |
| 2311 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
| 2312 | break; | |
| 2313 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
| 2314 | break; | |
| 2315 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
| 2316 | break; | |
| 2317 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
| 2318 | break; | |
| 2319 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
| 2320 | break; | |
| 2321 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
| 2322 | break; | |
| 2323 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
| 2324 | break; | |
| 2325 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
| 2326 | break; | |
| 2327 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
| 2328 | break; | |
| 2329 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
| 2330 | break; | |
| 2331 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
| 2332 | break; | |
| 2333 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
| 2334 | break; | |
| 2335 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
| 2336 | break; | |
| 2337 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
| 2338 | break; | |
| 2339 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
| 2340 | break; | |
| 2341 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
| 2342 | break; | |
| 2343 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
| 2344 | break; | |
| 2345 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
| 2346 | break; | |
| 2347 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
| 2348 | break; | |
| 2349 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
| 2350 | break; | |
| 2351 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
| 2352 | break; | |
| 2353 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
| 2354 | break; | |
| 2355 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
| 2356 | break; | |
| 2357 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
| 2358 | break; | |
| 2359 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
| 2360 | break; | |
| 2361 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
| 2362 | break; | |
| 2363 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
| 2364 | break; | |
| 2365 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
| 2366 | break; | |
| 25f23106 AM |
2367 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
| 2368 | break; | |
| 2369 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
| 2370 | break; | |
| 2371 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
| 2372 | break; | |
| 2373 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
| 2374 | break; | |
| 411e1bfb AM |
2375 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
| 2376 | break; | |
| 2377 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
| 5bd4f169 AM |
2378 | break; |
| 2379 | } | |
| 2380 | ||
| 4ce794b7 | 2381 | return ppc64_elf_howto_table[r]; |
| 5bd4f169 AM |
2382 | }; |
| 2383 | ||
| 157090f7 AM |
2384 | static reloc_howto_type * |
| 2385 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
| 2386 | const char *r_name) | |
| 2387 | { | |
| 2388 | unsigned int i; | |
| 2389 | ||
| 2390 | for (i = 0; | |
| 2391 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2392 | i++) | |
| 2393 | if (ppc64_elf_howto_raw[i].name != NULL | |
| 2394 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
| 2395 | return &ppc64_elf_howto_raw[i]; | |
| 2396 | ||
| 2397 | return NULL; | |
| 2398 | } | |
| 2399 | ||
| 5bd4f169 AM |
2400 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
| 2401 | ||
| 2402 | static void | |
| 4ce794b7 AM |
2403 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 2404 | Elf_Internal_Rela *dst) | |
| 5bd4f169 | 2405 | { |
| 65f38f15 AM |
2406 | unsigned int type; |
| 2407 | ||
| ef60b7ff | 2408 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 2409 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
2410 | ppc_howto_init (); |
| 2411 | ||
| 65f38f15 | 2412 | type = ELF64_R_TYPE (dst->r_info); |
| d0fb9a8d JJ |
2413 | if (type >= (sizeof (ppc64_elf_howto_table) |
| 2414 | / sizeof (ppc64_elf_howto_table[0]))) | |
| 2415 | { | |
| 2416 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
| 3ec2b351 NC |
2417 | abfd, (int) type); |
| 2418 | type = R_PPC64_NONE; | |
| d0fb9a8d | 2419 | } |
| 65f38f15 | 2420 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
| 5bd4f169 AM |
2421 | } |
| 2422 | ||
| 04c9666a | 2423 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
| 5bd4f169 AM |
2424 | |
| 2425 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2426 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2427 | void *data, asection *input_section, | |
| 2428 | bfd *output_bfd, char **error_message) | |
| 5bd4f169 | 2429 | { |
| 805fc799 AM |
2430 | /* If this is a relocatable link (output_bfd test tells us), just |
| 2431 | call the generic function. Any adjustment will be done at final | |
| 2432 | link time. */ | |
| 2433 | if (output_bfd != NULL) | |
| cedb70c5 | 2434 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2435 | input_section, output_bfd, error_message); |
| 2436 | ||
| 2437 | /* Adjust the addend for sign extension of the low 16 bits. | |
| 2438 | We won't actually be using the low 16 bits, so trashing them | |
| 2439 | doesn't matter. */ | |
| 2440 | reloc_entry->addend += 0x8000; | |
| 2441 | return bfd_reloc_continue; | |
| 2442 | } | |
| 5bd4f169 | 2443 | |
| 2441e016 AM |
2444 | static bfd_reloc_status_type |
| 2445 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
| 2446 | void *data, asection *input_section, | |
| 2447 | bfd *output_bfd, char **error_message) | |
| 2448 | { | |
| 2449 | if (output_bfd != NULL) | |
| 2450 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
| 2451 | input_section, output_bfd, error_message); | |
| 2452 | ||
| 699733f6 AM |
2453 | if (strcmp (symbol->section->name, ".opd") == 0 |
| 2454 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
| 2441e016 AM |
2455 | { |
| 2456 | bfd_vma dest = opd_entry_value (symbol->section, | |
| 2457 | symbol->value + reloc_entry->addend, | |
| aef36ac1 | 2458 | NULL, NULL, FALSE); |
| 2441e016 AM |
2459 | if (dest != (bfd_vma) -1) |
| 2460 | reloc_entry->addend = dest - (symbol->value | |
| 2461 | + symbol->section->output_section->vma | |
| 2462 | + symbol->section->output_offset); | |
| 2463 | } | |
| 2464 | return bfd_reloc_continue; | |
| 2465 | } | |
| 2466 | ||
| 805fc799 | 2467 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2468 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2469 | void *data, asection *input_section, | |
| 2470 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2471 | { |
| 2472 | long insn; | |
| 04c9666a | 2473 | enum elf_ppc64_reloc_type r_type; |
| 805fc799 | 2474 | bfd_size_type octets; |
| 794e51c0 AM |
2475 | /* Assume 'at' branch hints. */ |
| 2476 | bfd_boolean is_isa_v2 = TRUE; | |
| 805fc799 AM |
2477 | |
| 2478 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2479 | call the generic function. Any adjustment will be done at final | |
| 2480 | link time. */ | |
| 5bd4f169 | 2481 | if (output_bfd != NULL) |
| cedb70c5 | 2482 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2483 | input_section, output_bfd, error_message); |
| 2484 | ||
| 2485 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2486 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2487 | insn &= ~(0x01 << 21); | |
| 4ce794b7 | 2488 | r_type = reloc_entry->howto->type; |
| 805fc799 AM |
2489 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
| 2490 | || r_type == R_PPC64_REL14_BRTAKEN) | |
| cedb70c5 | 2491 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 805fc799 | 2492 | |
| 794e51c0 | 2493 | if (is_isa_v2) |
| 5bd4f169 | 2494 | { |
| 805fc799 AM |
2495 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 2496 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 2497 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 2498 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 2499 | insn |= 0x02 << 21; | |
| 2500 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 2501 | insn |= 0x08 << 21; | |
| 2502 | else | |
| 2441e016 | 2503 | goto out; |
| 5bd4f169 | 2504 | } |
| 805fc799 AM |
2505 | else |
| 2506 | { | |
| 2507 | bfd_vma target = 0; | |
| 2508 | bfd_vma from; | |
| 5bd4f169 | 2509 | |
| 805fc799 AM |
2510 | if (!bfd_is_com_section (symbol->section)) |
| 2511 | target = symbol->value; | |
| 2512 | target += symbol->section->output_section->vma; | |
| 2513 | target += symbol->section->output_offset; | |
| 2514 | target += reloc_entry->addend; | |
| 5bd4f169 | 2515 | |
| 805fc799 AM |
2516 | from = (reloc_entry->address |
| 2517 | + input_section->output_offset | |
| 2518 | + input_section->output_section->vma); | |
| 5bd4f169 | 2519 | |
| 805fc799 AM |
2520 | /* Invert 'y' bit if not the default. */ |
| 2521 | if ((bfd_signed_vma) (target - from) < 0) | |
| 2522 | insn ^= 0x01 << 21; | |
| 2523 | } | |
| 4ce794b7 | 2524 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
| 2441e016 AM |
2525 | out: |
| 2526 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
| 2527 | input_section, output_bfd, error_message); | |
| 805fc799 | 2528 | } |
| 5bd4f169 | 2529 | |
| 805fc799 | 2530 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2531 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2532 | void *data, asection *input_section, | |
| 2533 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2534 | { |
| 2535 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2536 | call the generic function. Any adjustment will be done at final | |
| 2537 | link time. */ | |
| 2538 | if (output_bfd != NULL) | |
| cedb70c5 | 2539 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 | 2540 | input_section, output_bfd, error_message); |
| 5bd4f169 | 2541 | |
| 805fc799 AM |
2542 | /* Subtract the symbol section base address. */ |
| 2543 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 5bd4f169 AM |
2544 | return bfd_reloc_continue; |
| 2545 | } | |
| 2546 | ||
| 805fc799 | 2547 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2548 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2549 | void *data, asection *input_section, | |
| 2550 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2551 | { |
| 2552 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2553 | call the generic function. Any adjustment will be done at final | |
| 2554 | link time. */ | |
| 2555 | if (output_bfd != NULL) | |
| cedb70c5 | 2556 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2557 | input_section, output_bfd, error_message); |
| 2558 | ||
| 2559 | /* Subtract the symbol section base address. */ | |
| 2560 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 2561 | ||
| 2562 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2563 | reloc_entry->addend += 0x8000; | |
| 2564 | return bfd_reloc_continue; | |
| 2565 | } | |
| 2566 | ||
| 2567 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2568 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2569 | void *data, asection *input_section, | |
| 2570 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2571 | { |
| 2572 | bfd_vma TOCstart; | |
| 2573 | ||
| 2574 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2575 | call the generic function. Any adjustment will be done at final | |
| 2576 | link time. */ | |
| 2577 | if (output_bfd != NULL) | |
| cedb70c5 | 2578 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2579 | input_section, output_bfd, error_message); |
| 2580 | ||
| 2581 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2582 | if (TOCstart == 0) | |
| 1c865ab2 | 2583 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2584 | |
| 2585 | /* Subtract the TOC base address. */ | |
| 2586 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2587 | return bfd_reloc_continue; | |
| 2588 | } | |
| 2589 | ||
| 2590 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2591 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2592 | void *data, asection *input_section, | |
| 2593 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2594 | { |
| 2595 | bfd_vma TOCstart; | |
| 2596 | ||
| 2597 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2598 | call the generic function. Any adjustment will be done at final | |
| 2599 | link time. */ | |
| 2600 | if (output_bfd != NULL) | |
| cedb70c5 | 2601 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2602 | input_section, output_bfd, error_message); |
| 2603 | ||
| 2604 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2605 | if (TOCstart == 0) | |
| 1c865ab2 | 2606 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2607 | |
| 2608 | /* Subtract the TOC base address. */ | |
| 2609 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2610 | ||
| 2611 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2612 | reloc_entry->addend += 0x8000; | |
| 2613 | return bfd_reloc_continue; | |
| 2614 | } | |
| 2615 | ||
| 2616 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2617 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2618 | void *data, asection *input_section, | |
| 2619 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2620 | { |
| 2621 | bfd_vma TOCstart; | |
| 2622 | bfd_size_type octets; | |
| 2623 | ||
| 2624 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2625 | call the generic function. Any adjustment will be done at final | |
| 2626 | link time. */ | |
| 2627 | if (output_bfd != NULL) | |
| cedb70c5 | 2628 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2629 | input_section, output_bfd, error_message); |
| 2630 | ||
| 2631 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2632 | if (TOCstart == 0) | |
| 1c865ab2 | 2633 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2634 | |
| 2635 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2636 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
| 2637 | return bfd_reloc_ok; | |
| 2638 | } | |
| 2639 | ||
| 2640 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2641 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2642 | void *data, asection *input_section, | |
| 2643 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2644 | { |
| 2645 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2646 | call the generic function. Any adjustment will be done at final | |
| 2647 | link time. */ | |
| 2648 | if (output_bfd != NULL) | |
| cedb70c5 | 2649 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2650 | input_section, output_bfd, error_message); |
| 2651 | ||
| 2652 | if (error_message != NULL) | |
| 2653 | { | |
| 2654 | static char buf[60]; | |
| 2655 | sprintf (buf, "generic linker can't handle %s", | |
| 2656 | reloc_entry->howto->name); | |
| 2657 | *error_message = buf; | |
| 2658 | } | |
| 2659 | return bfd_reloc_dangerous; | |
| 2660 | } | |
| 2661 | ||
| 927be08e AM |
2662 | /* Track GOT entries needed for a given symbol. We might need more |
| 2663 | than one got entry per symbol. */ | |
| 2664 | struct got_entry | |
| 2665 | { | |
| 2666 | struct got_entry *next; | |
| 2667 | ||
| 2668 | /* The symbol addend that we'll be placing in the GOT. */ | |
| 2669 | bfd_vma addend; | |
| 2670 | ||
| 2671 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
| 2672 | symbol referenced from different input files. This is to support | |
| 2673 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
| 2674 | from one input file to another. After partitioning into TOC groups | |
| 2675 | we merge entries within the group. | |
| 2676 | ||
| 2677 | Point to the BFD owning this GOT entry. */ | |
| 2678 | bfd *owner; | |
| 2679 | ||
| 2680 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
| 2681 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
| f961d9dd | 2682 | unsigned char tls_type; |
| 927be08e AM |
2683 | |
| 2684 | /* Non-zero if got.ent points to real entry. */ | |
| f961d9dd | 2685 | unsigned char is_indirect; |
| 927be08e AM |
2686 | |
| 2687 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
| 2688 | union | |
| 2689 | { | |
| 2690 | bfd_signed_vma refcount; | |
| 2691 | bfd_vma offset; | |
| 2692 | struct got_entry *ent; | |
| 2693 | } got; | |
| 2694 | }; | |
| 2695 | ||
| 2696 | /* The same for PLT. */ | |
| 2697 | struct plt_entry | |
| 2698 | { | |
| 2699 | struct plt_entry *next; | |
| 2700 | ||
| 2701 | bfd_vma addend; | |
| 2702 | ||
| 2703 | union | |
| 2704 | { | |
| 2705 | bfd_signed_vma refcount; | |
| 2706 | bfd_vma offset; | |
| 2707 | } plt; | |
| 2708 | }; | |
| 2709 | ||
| e717da7e AM |
2710 | struct ppc64_elf_obj_tdata |
| 2711 | { | |
| 2712 | struct elf_obj_tdata elf; | |
| 2713 | ||
| 2714 | /* Shortcuts to dynamic linker sections. */ | |
| 2715 | asection *got; | |
| 2716 | asection *relgot; | |
| 2717 | ||
| b3fac117 AM |
2718 | /* Used during garbage collection. We attach global symbols defined |
| 2719 | on removed .opd entries to this section so that the sym is removed. */ | |
| 2720 | asection *deleted_section; | |
| 81688140 | 2721 | |
| 927be08e | 2722 | /* TLS local dynamic got entry handling. Support for multiple GOT |
| e717da7e | 2723 | sections means we potentially need one of these for each input bfd. */ |
| 927be08e | 2724 | struct got_entry tlsld_got; |
| 8860955f | 2725 | |
| 729eabd5 AM |
2726 | union { |
| 2727 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
| 2728 | Elf_Internal_Rela *relocs; | |
| 2729 | ||
| 2730 | /* Section contents. */ | |
| 2731 | bfd_byte *contents; | |
| 2732 | } opd; | |
| d77c8a4b AM |
2733 | |
| 2734 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
| 2735 | the reloc to be in the range -32768 to 32767. */ | |
| 98528052 AM |
2736 | unsigned int has_small_toc_reloc : 1; |
| 2737 | ||
| 560c8763 AM |
2738 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
| 2739 | instruction not one we handle. */ | |
| 2740 | unsigned int unexpected_toc_insn : 1; | |
| e717da7e AM |
2741 | }; |
| 2742 | ||
| 2743 | #define ppc64_elf_tdata(bfd) \ | |
| 2744 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
| 2745 | ||
| 2746 | #define ppc64_tlsld_got(bfd) \ | |
| 2747 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
| 2748 | ||
| 0c8d6e5c AM |
2749 | #define is_ppc64_elf(bfd) \ |
| 2750 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
| 4dfe6ac6 | 2751 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
| 0c8d6e5c | 2752 | |
| e717da7e AM |
2753 | /* Override the generic function because we store some extras. */ |
| 2754 | ||
| 2755 | static bfd_boolean | |
| 2756 | ppc64_elf_mkobject (bfd *abfd) | |
| 2757 | { | |
| 0ffa91dd | 2758 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
| 4dfe6ac6 | 2759 | PPC64_ELF_DATA); |
| e717da7e AM |
2760 | } |
| 2761 | ||
| feee612b AM |
2762 | /* Fix bad default arch selected for a 64 bit input bfd when the |
| 2763 | default is 32 bit. */ | |
| 2764 | ||
| b34976b6 | 2765 | static bfd_boolean |
| 4ce794b7 | 2766 | ppc64_elf_object_p (bfd *abfd) |
| feee612b AM |
2767 | { |
| 2768 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
| 2769 | { | |
| 2770 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
| 2771 | ||
| 2772 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
| 2773 | { | |
| 2774 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
| 2775 | abfd->arch_info = abfd->arch_info->next; | |
| 2776 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
| 2777 | } | |
| 2778 | } | |
| b34976b6 | 2779 | return TRUE; |
| feee612b AM |
2780 | } |
| 2781 | ||
| d37c89e5 AM |
2782 | /* Support for core dump NOTE sections. */ |
| 2783 | ||
| 2784 | static bfd_boolean | |
| 2785 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
| 2786 | { | |
| eea6121a | 2787 | size_t offset, size; |
| d37c89e5 AM |
2788 | |
| 2789 | if (note->descsz != 504) | |
| 2790 | return FALSE; | |
| 2791 | ||
| 2792 | /* pr_cursig */ | |
| 228e534f | 2793 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| d37c89e5 AM |
2794 | |
| 2795 | /* pr_pid */ | |
| 228e534f | 2796 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
| d37c89e5 AM |
2797 | |
| 2798 | /* pr_reg */ | |
| 2799 | offset = 112; | |
| eea6121a | 2800 | size = 384; |
| d37c89e5 AM |
2801 | |
| 2802 | /* Make a ".reg/999" section. */ | |
| 2803 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
| eea6121a | 2804 | size, note->descpos + offset); |
| d37c89e5 AM |
2805 | } |
| 2806 | ||
| 2807 | static bfd_boolean | |
| 2808 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
| 2809 | { | |
| 2810 | if (note->descsz != 136) | |
| 2811 | return FALSE; | |
| 2812 | ||
| 228e534f | 2813 | elf_tdata (abfd)->core->pid |
| bc989cdc | 2814 | = bfd_get_32 (abfd, note->descdata + 24); |
| 228e534f | 2815 | elf_tdata (abfd)->core->program |
| d37c89e5 | 2816 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
| 228e534f | 2817 | elf_tdata (abfd)->core->command |
| d37c89e5 AM |
2818 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
| 2819 | ||
| 2820 | return TRUE; | |
| 2821 | } | |
| 2822 | ||
| 183e98be AM |
2823 | static char * |
| 2824 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
| 2825 | ...) | |
| 2826 | { | |
| 2827 | switch (note_type) | |
| 2828 | { | |
| 2829 | default: | |
| 2830 | return NULL; | |
| 2831 | ||
| 2832 | case NT_PRPSINFO: | |
| 2833 | { | |
| 2834 | char data[136]; | |
| 2835 | va_list ap; | |
| 2836 | ||
| 2837 | va_start (ap, note_type); | |
| 75cd47ed | 2838 | memset (data, 0, sizeof (data)); |
| 183e98be AM |
2839 | strncpy (data + 40, va_arg (ap, const char *), 16); |
| 2840 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
| 2841 | va_end (ap); | |
| 2842 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2843 | "CORE", note_type, data, sizeof (data)); | |
| 2844 | } | |
| 2845 | ||
| 2846 | case NT_PRSTATUS: | |
| 2847 | { | |
| 2848 | char data[504]; | |
| 2849 | va_list ap; | |
| 2850 | long pid; | |
| 2851 | int cursig; | |
| 2852 | const void *greg; | |
| 2853 | ||
| 2854 | va_start (ap, note_type); | |
| 2855 | memset (data, 0, 112); | |
| 2856 | pid = va_arg (ap, long); | |
| 2857 | bfd_put_32 (abfd, pid, data + 32); | |
| 2858 | cursig = va_arg (ap, int); | |
| 2859 | bfd_put_16 (abfd, cursig, data + 12); | |
| 2860 | greg = va_arg (ap, const void *); | |
| 2861 | memcpy (data + 112, greg, 384); | |
| 2862 | memset (data + 496, 0, 8); | |
| 2863 | va_end (ap); | |
| 2864 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2865 | "CORE", note_type, data, sizeof (data)); | |
| 2866 | } | |
| 2867 | } | |
| 2868 | } | |
| 2869 | ||
| 5d35169e AM |
2870 | /* Add extra PPC sections. */ |
| 2871 | ||
| b35d266b | 2872 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
| 7f4d3958 | 2873 | { |
| 0112cd26 NC |
2874 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
| 2875 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2876 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2877 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2878 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2879 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2880 | { NULL, 0, 0, 0, 0 } | |
| 5d35169e AM |
2881 | }; |
| 2882 | ||
| 7c8fe5c4 AM |
2883 | enum _ppc64_sec_type { |
| 2884 | sec_normal = 0, | |
| 2885 | sec_opd = 1, | |
| 2886 | sec_toc = 2 | |
| 2887 | }; | |
| 2888 | ||
| f0abc2a1 AM |
2889 | struct _ppc64_elf_section_data |
| 2890 | { | |
| 2891 | struct bfd_elf_section_data elf; | |
| 411e1bfb | 2892 | |
| f0abc2a1 AM |
2893 | union |
| 2894 | { | |
| 74f0fb50 AM |
2895 | /* An array with one entry for each opd function descriptor. */ |
| 2896 | struct _opd_sec_data | |
| 2897 | { | |
| 2898 | /* Points to the function code section for local opd entries. */ | |
| 2899 | asection **func_sec; | |
| 2900 | ||
| 2901 | /* After editing .opd, adjust references to opd local syms. */ | |
| 2902 | long *adjust; | |
| 2903 | } opd; | |
| 7c8fe5c4 | 2904 | |
| 3a71aa26 AM |
2905 | /* An array for toc sections, indexed by offset/8. */ |
| 2906 | struct _toc_sec_data | |
| 2907 | { | |
| 2908 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
| 2909 | unsigned *symndx; | |
| 2910 | ||
| 2911 | /* And the relocation addend. */ | |
| 2912 | bfd_vma *add; | |
| 2913 | } toc; | |
| 7c8fe5c4 AM |
2914 | } u; |
| 2915 | ||
| 2916 | enum _ppc64_sec_type sec_type:2; | |
| 411e1bfb | 2917 | |
| 7c8fe5c4 AM |
2918 | /* Flag set when small branches are detected. Used to |
| 2919 | select suitable defaults for the stub group size. */ | |
| 2920 | unsigned int has_14bit_branch:1; | |
| f0abc2a1 AM |
2921 | }; |
| 2922 | ||
| 2923 | #define ppc64_elf_section_data(sec) \ | |
| 411e1bfb | 2924 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
| f0abc2a1 AM |
2925 | |
| 2926 | static bfd_boolean | |
| 4ce794b7 | 2927 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
| f0abc2a1 | 2928 | { |
| f592407e AM |
2929 | if (!sec->used_by_bfd) |
| 2930 | { | |
| 2931 | struct _ppc64_elf_section_data *sdata; | |
| 2932 | bfd_size_type amt = sizeof (*sdata); | |
| f0abc2a1 | 2933 | |
| f592407e AM |
2934 | sdata = bfd_zalloc (abfd, amt); |
| 2935 | if (sdata == NULL) | |
| 2936 | return FALSE; | |
| 2937 | sec->used_by_bfd = sdata; | |
| 2938 | } | |
| f0abc2a1 AM |
2939 | |
| 2940 | return _bfd_elf_new_section_hook (abfd, sec); | |
| 2941 | } | |
| 4025353c | 2942 | |
| 74f0fb50 | 2943 | static struct _opd_sec_data * |
| 4025353c AM |
2944 | get_opd_info (asection * sec) |
| 2945 | { | |
| 2946 | if (sec != NULL | |
| 2947 | && ppc64_elf_section_data (sec) != NULL | |
| 7c8fe5c4 | 2948 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
| 74f0fb50 | 2949 | return &ppc64_elf_section_data (sec)->u.opd; |
| 4025353c AM |
2950 | return NULL; |
| 2951 | } | |
| ee67d69a AM |
2952 | |
| 2953 | static inline int | |
| 2954 | abiversion (bfd *abfd) | |
| 2955 | { | |
| 2956 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
| 2957 | } | |
| 2958 | ||
| 2959 | static inline void | |
| 2960 | set_abiversion (bfd *abfd, int ver) | |
| 2961 | { | |
| 2962 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
| 2963 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
| 2964 | } | |
| 90e3cdf2 JJ |
2965 | \f |
| 2966 | /* Parameters for the qsort hook. */ | |
| 90e3cdf2 JJ |
2967 | static bfd_boolean synthetic_relocatable; |
| 2968 | ||
| 699733f6 | 2969 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
| 90e3cdf2 JJ |
2970 | |
| 2971 | static int | |
| 2972 | compare_symbols (const void *ap, const void *bp) | |
| 2973 | { | |
| 2974 | const asymbol *a = * (const asymbol **) ap; | |
| 2975 | const asymbol *b = * (const asymbol **) bp; | |
| 2976 | ||
| 699733f6 AM |
2977 | /* Section symbols first. */ |
| 2978 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
| 90e3cdf2 | 2979 | return -1; |
| 699733f6 | 2980 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
| 90e3cdf2 JJ |
2981 | return 1; |
| 2982 | ||
| 699733f6 | 2983 | /* then .opd symbols. */ |
| ffcfec52 AM |
2984 | if (strcmp (a->section->name, ".opd") == 0 |
| 2985 | && strcmp (b->section->name, ".opd") != 0) | |
| 90e3cdf2 | 2986 | return -1; |
| ffcfec52 AM |
2987 | if (strcmp (a->section->name, ".opd") != 0 |
| 2988 | && strcmp (b->section->name, ".opd") == 0) | |
| 90e3cdf2 JJ |
2989 | return 1; |
| 2990 | ||
| 699733f6 | 2991 | /* then other code symbols. */ |
| 90e3cdf2 JJ |
2992 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
| 2993 | == (SEC_CODE | SEC_ALLOC) | |
| 2994 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2995 | != (SEC_CODE | SEC_ALLOC)) | |
| 2996 | return -1; | |
| 2997 | ||
| 2998 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2999 | != (SEC_CODE | SEC_ALLOC) | |
| 3000 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3001 | == (SEC_CODE | SEC_ALLOC)) | |
| 3002 | return 1; | |
| 3003 | ||
| 3004 | if (synthetic_relocatable) | |
| 3005 | { | |
| 3006 | if (a->section->id < b->section->id) | |
| 3007 | return -1; | |
| 3008 | ||
| 3009 | if (a->section->id > b->section->id) | |
| 3010 | return 1; | |
| 3011 | } | |
| 3012 | ||
| 3013 | if (a->value + a->section->vma < b->value + b->section->vma) | |
| 3014 | return -1; | |
| 3015 | ||
| 3016 | if (a->value + a->section->vma > b->value + b->section->vma) | |
| 3017 | return 1; | |
| 3018 | ||
| 4d35a0aa AM |
3019 | /* For syms with the same value, prefer strong dynamic global function |
| 3020 | syms over other syms. */ | |
| 3021 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
| 3022 | return -1; | |
| 3023 | ||
| 3024 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
| 3025 | return 1; | |
| 3026 | ||
| 3027 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
| 3028 | return -1; | |
| 3029 | ||
| 3030 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
| 3031 | return 1; | |
| 3032 | ||
| 3033 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
| 3034 | return -1; | |
| 3035 | ||
| 3036 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
| 3037 | return 1; | |
| 3038 | ||
| 3039 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
| 3040 | return -1; | |
| 3041 | ||
| 3042 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
| 3043 | return 1; | |
| 3044 | ||
| 90e3cdf2 JJ |
3045 | return 0; |
| 3046 | } | |
| 3047 | ||
| 699733f6 | 3048 | /* Search SYMS for a symbol of the given VALUE. */ |
| 90e3cdf2 | 3049 | |
| 699733f6 AM |
3050 | static asymbol * |
| 3051 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
| 90e3cdf2 | 3052 | { |
| 699733f6 | 3053 | long mid; |
| 90e3cdf2 | 3054 | |
| 699733f6 AM |
3055 | if (id == -1) |
| 3056 | { | |
| 3057 | while (lo < hi) | |
| 3058 | { | |
| 3059 | mid = (lo + hi) >> 1; | |
| 3060 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
| 3061 | lo = mid + 1; | |
| 3062 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
| 3063 | hi = mid; | |
| 3064 | else | |
| 3065 | return syms[mid]; | |
| 3066 | } | |
| 3067 | } | |
| 3068 | else | |
| 3069 | { | |
| 3070 | while (lo < hi) | |
| 3071 | { | |
| 3072 | mid = (lo + hi) >> 1; | |
| 3073 | if (syms[mid]->section->id < id) | |
| 3074 | lo = mid + 1; | |
| 3075 | else if (syms[mid]->section->id > id) | |
| 3076 | hi = mid; | |
| 3077 | else if (syms[mid]->value < value) | |
| 3078 | lo = mid + 1; | |
| 3079 | else if (syms[mid]->value > value) | |
| 3080 | hi = mid; | |
| 3081 | else | |
| 3082 | return syms[mid]; | |
| 3083 | } | |
| 3084 | } | |
| 3085 | return NULL; | |
| 90e3cdf2 JJ |
3086 | } |
| 3087 | ||
| 468392fb AM |
3088 | static bfd_boolean |
| 3089 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
| 3090 | { | |
| 3091 | bfd_vma vma = *(bfd_vma *) ptr; | |
| 3092 | return ((section->flags & SEC_ALLOC) != 0 | |
| 3093 | && section->vma <= vma | |
| 3094 | && vma < section->vma + section->size); | |
| 3095 | } | |
| 3096 | ||
| 699733f6 | 3097 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
| 468392fb | 3098 | entry syms. Also generate @plt symbols for the glink branch table. */ |
| 90e3cdf2 JJ |
3099 | |
| 3100 | static long | |
| a7535cf3 AM |
3101 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
| 3102 | long static_count, asymbol **static_syms, | |
| 3103 | long dyn_count, asymbol **dyn_syms, | |
| c9727e01 | 3104 | asymbol **ret) |
| 90e3cdf2 JJ |
3105 | { |
| 3106 | asymbol *s; | |
| 699733f6 AM |
3107 | long i; |
| 3108 | long count; | |
| 90e3cdf2 | 3109 | char *names; |
| a7535cf3 | 3110 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
| ee67d69a | 3111 | asection *opd = NULL; |
| 90e3cdf2 | 3112 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
| a7535cf3 | 3113 | asymbol **syms; |
| ee67d69a | 3114 | int abi = abiversion (abfd); |
| 90e3cdf2 JJ |
3115 | |
| 3116 | *ret = NULL; | |
| 3117 | ||
| ee67d69a AM |
3118 | if (abi < 2) |
| 3119 | { | |
| 3120 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
| 3121 | if (opd == NULL && abi == 1) | |
| 3122 | return 0; | |
| 3123 | } | |
| 90e3cdf2 | 3124 | |
| a7535cf3 | 3125 | symcount = static_count; |
| c9727e01 | 3126 | if (!relocatable) |
| a7535cf3 | 3127 | symcount += dyn_count; |
| 90e3cdf2 | 3128 | if (symcount == 0) |
| c9727e01 | 3129 | return 0; |
| 90e3cdf2 | 3130 | |
| a7535cf3 AM |
3131 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
| 3132 | if (syms == NULL) | |
| 7356fed5 | 3133 | return -1; |
| a7535cf3 AM |
3134 | |
| 3135 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
| 3136 | { | |
| 3137 | /* Use both symbol tables. */ | |
| 3138 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
| 3139 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
| 3140 | } | |
| 3141 | else if (!relocatable && static_count == 0) | |
| 3142 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
| 3143 | else | |
| 3144 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
| 3145 | ||
| 90e3cdf2 | 3146 | synthetic_relocatable = relocatable; |
| 595da8c5 | 3147 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
| 90e3cdf2 | 3148 | |
| c9727e01 AM |
3149 | if (!relocatable && symcount > 1) |
| 3150 | { | |
| 3151 | long j; | |
| 3152 | /* Trim duplicate syms, since we may have merged the normal and | |
| 3153 | dynamic symbols. Actually, we only care about syms that have | |
| 3b36f7e6 | 3154 | different values, so trim any with the same value. */ |
| c9727e01 AM |
3155 | for (i = 1, j = 1; i < symcount; ++i) |
| 3156 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
| 3157 | != syms[i]->value + syms[i]->section->vma) | |
| 3158 | syms[j++] = syms[i]; | |
| 3159 | symcount = j; | |
| 3160 | } | |
| 3161 | ||
| 699733f6 | 3162 | i = 0; |
| ffcfec52 | 3163 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
| 699733f6 AM |
3164 | ++i; |
| 3165 | codesecsym = i; | |
| 90e3cdf2 | 3166 | |
| 699733f6 AM |
3167 | for (; i < symcount; ++i) |
| 3168 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3169 | != (SEC_CODE | SEC_ALLOC)) | |
| 3170 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3171 | break; | |
| 3172 | codesecsymend = i; | |
| 90e3cdf2 | 3173 | |
| 699733f6 AM |
3174 | for (; i < symcount; ++i) |
| 3175 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3176 | break; | |
| 3177 | secsymend = i; | |
| 90e3cdf2 | 3178 | |
| 699733f6 | 3179 | for (; i < symcount; ++i) |
| ffcfec52 | 3180 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
| 699733f6 AM |
3181 | break; |
| 3182 | opdsymend = i; | |
| 90e3cdf2 | 3183 | |
| 699733f6 AM |
3184 | for (; i < symcount; ++i) |
| 3185 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3186 | != (SEC_CODE | SEC_ALLOC)) | |
| 3187 | break; | |
| 3188 | symcount = i; | |
| 3189 | ||
| c9727e01 | 3190 | count = 0; |
| 90e3cdf2 | 3191 | |
| 699733f6 | 3192 | if (relocatable) |
| 90e3cdf2 | 3193 | { |
| 699733f6 AM |
3194 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 3195 | arelent *r; | |
| 3196 | size_t size; | |
| 3197 | long relcount; | |
| 90e3cdf2 | 3198 | |
| 468392fb AM |
3199 | if (opdsymend == secsymend) |
| 3200 | goto done; | |
| 3201 | ||
| 699733f6 | 3202 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
| 90e3cdf2 | 3203 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
| 7356fed5 | 3204 | if (relcount == 0) |
| c9727e01 | 3205 | goto done; |
| 90e3cdf2 | 3206 | |
| 7356fed5 AM |
3207 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
| 3208 | { | |
| 3209 | count = -1; | |
| 3210 | goto done; | |
| 3211 | } | |
| 3212 | ||
| 699733f6 | 3213 | size = 0; |
| 595da8c5 | 3214 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 699733f6 AM |
3215 | { |
| 3216 | asymbol *sym; | |
| 90e3cdf2 | 3217 | |
| 595da8c5 | 3218 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3219 | && r->address < syms[i]->value + opd->vma) |
| 3220 | ++r; | |
| 90e3cdf2 | 3221 | |
| 595da8c5 | 3222 | if (r == opd->relocation + relcount) |
| 699733f6 | 3223 | break; |
| 90e3cdf2 | 3224 | |
| 699733f6 AM |
3225 | if (r->address != syms[i]->value + opd->vma) |
| 3226 | continue; | |
| 90e3cdf2 | 3227 | |
| 699733f6 AM |
3228 | if (r->howto->type != R_PPC64_ADDR64) |
| 3229 | continue; | |
| 90e3cdf2 | 3230 | |
| 699733f6 AM |
3231 | sym = *r->sym_ptr_ptr; |
| 3232 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3233 | sym->section->id, sym->value + r->addend)) | |
| 3234 | { | |
| 3235 | ++count; | |
| 3236 | size += sizeof (asymbol); | |
| 3237 | size += strlen (syms[i]->name) + 2; | |
| 3238 | } | |
| 3239 | } | |
| 90e3cdf2 | 3240 | |
| 699733f6 AM |
3241 | s = *ret = bfd_malloc (size); |
| 3242 | if (s == NULL) | |
| 3243 | { | |
| 7356fed5 | 3244 | count = -1; |
| c9727e01 | 3245 | goto done; |
| 699733f6 | 3246 | } |
| 90e3cdf2 | 3247 | |
| 699733f6 | 3248 | names = (char *) (s + count); |
| 90e3cdf2 | 3249 | |
| 595da8c5 | 3250 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 90e3cdf2 | 3251 | { |
| 699733f6 | 3252 | asymbol *sym; |
| 90e3cdf2 | 3253 | |
| 595da8c5 | 3254 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3255 | && r->address < syms[i]->value + opd->vma) |
| 3256 | ++r; | |
| 90e3cdf2 | 3257 | |
| 595da8c5 | 3258 | if (r == opd->relocation + relcount) |
| 699733f6 AM |
3259 | break; |
| 3260 | ||
| 3261 | if (r->address != syms[i]->value + opd->vma) | |
| 3262 | continue; | |
| 3263 | ||
| 3264 | if (r->howto->type != R_PPC64_ADDR64) | |
| 3265 | continue; | |
| 90e3cdf2 | 3266 | |
| 699733f6 AM |
3267 | sym = *r->sym_ptr_ptr; |
| 3268 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3269 | sym->section->id, sym->value + r->addend)) | |
| 3270 | { | |
| 3271 | size_t len; | |
| 3272 | ||
| 3273 | *s = *syms[i]; | |
| 6ba2a415 | 3274 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3275 | s->section = sym->section; |
| 3276 | s->value = sym->value + r->addend; | |
| 3277 | s->name = names; | |
| 3278 | *names++ = '.'; | |
| 3279 | len = strlen (syms[i]->name); | |
| 3280 | memcpy (names, syms[i]->name, len + 1); | |
| 3281 | names += len + 1; | |
| 6f610d07 UW |
3282 | /* Have udata.p point back to the original symbol this |
| 3283 | synthetic symbol was derived from. */ | |
| 3284 | s->udata.p = syms[i]; | |
| 699733f6 AM |
3285 | s++; |
| 3286 | } | |
| 3287 | } | |
| 3288 | } | |
| 3289 | else | |
| 90e3cdf2 | 3290 | { |
| 468392fb | 3291 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| ee67d69a | 3292 | bfd_byte *contents = NULL; |
| 699733f6 | 3293 | size_t size; |
| 468392fb AM |
3294 | long plt_count = 0; |
| 3295 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
| 3296 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
| 3297 | arelent *p; | |
| 90e3cdf2 | 3298 | |
| ee67d69a | 3299 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
| 699733f6 | 3300 | { |
| ee67d69a | 3301 | free_contents_and_exit: |
| 699733f6 | 3302 | if (contents) |
| ee67d69a | 3303 | free (contents); |
| 7356fed5 | 3304 | count = -1; |
| c9727e01 | 3305 | goto done; |
| 699733f6 | 3306 | } |
| 90e3cdf2 | 3307 | |
| 699733f6 AM |
3308 | size = 0; |
| 3309 | for (i = secsymend; i < opdsymend; ++i) | |
| 3310 | { | |
| 3311 | bfd_vma ent; | |
| 90e3cdf2 | 3312 | |
| 5ef11c02 AM |
3313 | /* Ignore bogus symbols. */ |
| 3314 | if (syms[i]->value > opd->size - 8) | |
| 3315 | continue; | |
| 3316 | ||
| 699733f6 AM |
3317 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3318 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 3319 | { | |
| 3320 | ++count; | |
| 3321 | size += sizeof (asymbol); | |
| 3322 | size += strlen (syms[i]->name) + 2; | |
| 3323 | } | |
| 3324 | } | |
| 90e3cdf2 | 3325 | |
| 468392fb | 3326 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
| 066ee829 AM |
3327 | if (dyn_count != 0 |
| 3328 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
| 468392fb AM |
3329 | { |
| 3330 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
| 3331 | size_t extdynsize; | |
| 3332 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
| 3333 | ||
| 3334 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
| 3335 | goto free_contents_and_exit; | |
| 3336 | ||
| 3337 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
| 3338 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
| 3339 | ||
| 3340 | extdyn = dynbuf; | |
| 3341 | extdynend = extdyn + dynamic->size; | |
| 3342 | for (; extdyn < extdynend; extdyn += extdynsize) | |
| 3343 | { | |
| 3344 | Elf_Internal_Dyn dyn; | |
| 3345 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
| 3346 | ||
| 3347 | if (dyn.d_tag == DT_NULL) | |
| 3348 | break; | |
| 3349 | ||
| 3350 | if (dyn.d_tag == DT_PPC64_GLINK) | |
| 3351 | { | |
| b9e5796b AM |
3352 | /* The first glink stub starts at offset 32; see |
| 3353 | comment in ppc64_elf_finish_dynamic_sections. */ | |
| 3354 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
| 468392fb AM |
3355 | /* The .glink section usually does not survive the final |
| 3356 | link; search for the section (usually .text) where the | |
| 3357 | glink stubs now reside. */ | |
| 3358 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
| 3359 | &glink_vma); | |
| 3360 | break; | |
| 3361 | } | |
| 3362 | } | |
| 3363 | ||
| 3364 | free (dynbuf); | |
| 3365 | } | |
| 3366 | ||
| 3367 | if (glink != NULL) | |
| 3368 | { | |
| 3369 | /* Determine __glink trampoline by reading the relative branch | |
| 3370 | from the first glink stub. */ | |
| 3371 | bfd_byte buf[4]; | |
| b9e5796b AM |
3372 | unsigned int off = 0; |
| 3373 | ||
| 3374 | while (bfd_get_section_contents (abfd, glink, buf, | |
| 3375 | glink_vma + off - glink->vma, 4)) | |
| 468392fb AM |
3376 | { |
| 3377 | unsigned int insn = bfd_get_32 (abfd, buf); | |
| 3378 | insn ^= B_DOT; | |
| 3379 | if ((insn & ~0x3fffffc) == 0) | |
| b9e5796b AM |
3380 | { |
| 3381 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
| 3382 | break; | |
| 3383 | } | |
| 3384 | off += 4; | |
| 3385 | if (off > 4) | |
| 3386 | break; | |
| 468392fb AM |
3387 | } |
| 3388 | ||
| 3389 | if (resolv_vma) | |
| 3390 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
| 468392fb | 3391 | |
| 066ee829 AM |
3392 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
| 3393 | if (relplt != NULL) | |
| 3394 | { | |
| 3395 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
| 3396 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
| 3397 | goto free_contents_and_exit; | |
| 68ffbac6 | 3398 | |
| 066ee829 AM |
3399 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
| 3400 | size += plt_count * sizeof (asymbol); | |
| 468392fb | 3401 | |
| 066ee829 AM |
3402 | p = relplt->relocation; |
| 3403 | for (i = 0; i < plt_count; i++, p++) | |
| e054468f AM |
3404 | { |
| 3405 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
| 3406 | if (p->addend != 0) | |
| 3407 | size += sizeof ("+0x") - 1 + 16; | |
| 3408 | } | |
| 066ee829 | 3409 | } |
| 468392fb AM |
3410 | } |
| 3411 | ||
| 699733f6 AM |
3412 | s = *ret = bfd_malloc (size); |
| 3413 | if (s == NULL) | |
| 7356fed5 | 3414 | goto free_contents_and_exit; |
| 90e3cdf2 | 3415 | |
| 468392fb | 3416 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
| 90e3cdf2 | 3417 | |
| 699733f6 | 3418 | for (i = secsymend; i < opdsymend; ++i) |
| 90e3cdf2 | 3419 | { |
| 699733f6 | 3420 | bfd_vma ent; |
| 90e3cdf2 | 3421 | |
| 5ef11c02 AM |
3422 | if (syms[i]->value > opd->size - 8) |
| 3423 | continue; | |
| 3424 | ||
| 699733f6 AM |
3425 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3426 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 90e3cdf2 | 3427 | { |
| c9727e01 | 3428 | long lo, hi; |
| 699733f6 | 3429 | size_t len; |
| c9727e01 | 3430 | asection *sec = abfd->sections; |
| 90e3cdf2 | 3431 | |
| 699733f6 AM |
3432 | *s = *syms[i]; |
| 3433 | lo = codesecsym; | |
| 3434 | hi = codesecsymend; | |
| 3435 | while (lo < hi) | |
| 3436 | { | |
| c9727e01 | 3437 | long mid = (lo + hi) >> 1; |
| 699733f6 AM |
3438 | if (syms[mid]->section->vma < ent) |
| 3439 | lo = mid + 1; | |
| 3440 | else if (syms[mid]->section->vma > ent) | |
| 3441 | hi = mid; | |
| 3442 | else | |
| c9727e01 AM |
3443 | { |
| 3444 | sec = syms[mid]->section; | |
| 3445 | break; | |
| 3446 | } | |
| 699733f6 AM |
3447 | } |
| 3448 | ||
| c9727e01 | 3449 | if (lo >= hi && lo > codesecsym) |
| 699733f6 | 3450 | sec = syms[lo - 1]->section; |
| 699733f6 AM |
3451 | |
| 3452 | for (; sec != NULL; sec = sec->next) | |
| 3453 | { | |
| 3454 | if (sec->vma > ent) | |
| 3455 | break; | |
| 63524580 JK |
3456 | /* SEC_LOAD may not be set if SEC is from a separate debug |
| 3457 | info file. */ | |
| 3458 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 699733f6 AM |
3459 | break; |
| 3460 | if ((sec->flags & SEC_CODE) != 0) | |
| 3461 | s->section = sec; | |
| 3462 | } | |
| 6ba2a415 | 3463 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3464 | s->value = ent - s->section->vma; |
| 3465 | s->name = names; | |
| 3466 | *names++ = '.'; | |
| 3467 | len = strlen (syms[i]->name); | |
| 3468 | memcpy (names, syms[i]->name, len + 1); | |
| 3469 | names += len + 1; | |
| 6f610d07 UW |
3470 | /* Have udata.p point back to the original symbol this |
| 3471 | synthetic symbol was derived from. */ | |
| 3472 | s->udata.p = syms[i]; | |
| 699733f6 | 3473 | s++; |
| 90e3cdf2 | 3474 | } |
| 90e3cdf2 | 3475 | } |
| 699733f6 | 3476 | free (contents); |
| 468392fb AM |
3477 | |
| 3478 | if (glink != NULL && relplt != NULL) | |
| 3479 | { | |
| 3480 | if (resolv_vma) | |
| 3481 | { | |
| 3482 | /* Add a symbol for the main glink trampoline. */ | |
| 86a4952b | 3483 | memset (s, 0, sizeof *s); |
| 468392fb | 3484 | s->the_bfd = abfd; |
| 6ba2a415 | 3485 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
| 468392fb AM |
3486 | s->section = glink; |
| 3487 | s->value = resolv_vma - glink->vma; | |
| 3488 | s->name = names; | |
| 3489 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
| 3490 | names += sizeof ("__glink_PLTresolve"); | |
| 3491 | s++; | |
| 3492 | count++; | |
| 3493 | } | |
| 3494 | ||
| 3495 | /* FIXME: It would be very much nicer to put sym@plt on the | |
| 3496 | stub rather than on the glink branch table entry. The | |
| 3497 | objdump disassembler would then use a sensible symbol | |
| 3498 | name on plt calls. The difficulty in doing so is | |
| 3499 | a) finding the stubs, and, | |
| 3500 | b) matching stubs against plt entries, and, | |
| 3501 | c) there can be multiple stubs for a given plt entry. | |
| 3502 | ||
| 3503 | Solving (a) could be done by code scanning, but older | |
| 3504 | ppc64 binaries used different stubs to current code. | |
| 3505 | (b) is the tricky one since you need to known the toc | |
| 3506 | pointer for at least one function that uses a pic stub to | |
| 3507 | be able to calculate the plt address referenced. | |
| 3508 | (c) means gdb would need to set multiple breakpoints (or | |
| 3509 | find the glink branch itself) when setting breakpoints | |
| 3510 | for pending shared library loads. */ | |
| 3511 | p = relplt->relocation; | |
| 3512 | for (i = 0; i < plt_count; i++, p++) | |
| 3513 | { | |
| 3514 | size_t len; | |
| 3515 | ||
| 3516 | *s = **p->sym_ptr_ptr; | |
| 3517 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
| 3518 | we are defining a symbol, ensure one of them is set. */ | |
| 3519 | if ((s->flags & BSF_LOCAL) == 0) | |
| 3520 | s->flags |= BSF_GLOBAL; | |
| 6ba2a415 | 3521 | s->flags |= BSF_SYNTHETIC; |
| 468392fb AM |
3522 | s->section = glink; |
| 3523 | s->value = glink_vma - glink->vma; | |
| 3524 | s->name = names; | |
| 3525 | s->udata.p = NULL; | |
| 3526 | len = strlen ((*p->sym_ptr_ptr)->name); | |
| 3527 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
| 3528 | names += len; | |
| e054468f AM |
3529 | if (p->addend != 0) |
| 3530 | { | |
| 3531 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
| 3532 | names += sizeof ("+0x") - 1; | |
| 3533 | bfd_sprintf_vma (abfd, names, p->addend); | |
| 3534 | names += strlen (names); | |
| 3535 | } | |
| 468392fb AM |
3536 | memcpy (names, "@plt", sizeof ("@plt")); |
| 3537 | names += sizeof ("@plt"); | |
| 3538 | s++; | |
| b9e5796b AM |
3539 | if (abi < 2) |
| 3540 | { | |
| 3541 | glink_vma += 8; | |
| 3542 | if (i >= 0x8000) | |
| 3543 | glink_vma += 4; | |
| 3544 | } | |
| 3545 | else | |
| 468392fb AM |
3546 | glink_vma += 4; |
| 3547 | } | |
| 3548 | count += plt_count; | |
| 3549 | } | |
| 90e3cdf2 JJ |
3550 | } |
| 3551 | ||
| c9727e01 | 3552 | done: |
| a7535cf3 | 3553 | free (syms); |
| 90e3cdf2 JJ |
3554 | return count; |
| 3555 | } | |
| 5bd4f169 | 3556 | \f |
| 65f38f15 AM |
3557 | /* The following functions are specific to the ELF linker, while |
| 3558 | functions above are used generally. Those named ppc64_elf_* are | |
| 3559 | called by the main ELF linker code. They appear in this file more | |
| 3560 | or less in the order in which they are called. eg. | |
| 3561 | ppc64_elf_check_relocs is called early in the link process, | |
| 3562 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
| e86ce104 AM |
3563 | called. |
| 3564 | ||
| 3565 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
| 3566 | functions have both a function code symbol and a function descriptor | |
| 3567 | symbol. A call to foo in a relocatable object file looks like: | |
| 3568 | ||
| 3569 | . .text | |
| 3570 | . x: | |
| 3571 | . bl .foo | |
| 3572 | . nop | |
| 3573 | ||
| 3574 | The function definition in another object file might be: | |
| 3575 | ||
| 3576 | . .section .opd | |
| 3577 | . foo: .quad .foo | |
| 3578 | . .quad .TOC.@tocbase | |
| 3579 | . .quad 0 | |
| 3580 | . | |
| 3581 | . .text | |
| 3582 | . .foo: blr | |
| 3583 | ||
| 3584 | When the linker resolves the call during a static link, the branch | |
| 3585 | unsurprisingly just goes to .foo and the .opd information is unused. | |
| 3586 | If the function definition is in a shared library, things are a little | |
| 3587 | different: The call goes via a plt call stub, the opd information gets | |
| 3588 | copied to the plt, and the linker patches the nop. | |
| 3589 | ||
| 3590 | . x: | |
| 3591 | . bl .foo_stub | |
| 3592 | . ld 2,40(1) | |
| 3593 | . | |
| 3594 | . | |
| 3595 | . .foo_stub: | |
| 71a39c98 AM |
3596 | . std 2,40(1) # in practice, the call stub |
| 3597 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
| 3598 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
| 3599 | . ld 12,0(11) | |
| 3600 | . ld 2,8(11) | |
| 3601 | . mtctr 12 | |
| 3602 | . ld 11,16(11) | |
| e86ce104 AM |
3603 | . bctr |
| 3604 | . | |
| 3605 | . .section .plt | |
| 3606 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
| 3607 | ||
| 3608 | The "reloc ()" notation is supposed to indicate that the linker emits | |
| 3609 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
| 3610 | copying. | |
| 3611 | ||
| 3612 | What are the difficulties here? Well, firstly, the relocations | |
| 3613 | examined by the linker in check_relocs are against the function code | |
| 3614 | sym .foo, while the dynamic relocation in the plt is emitted against | |
| 3615 | the function descriptor symbol, foo. Somewhere along the line, we need | |
| 3616 | to carefully copy dynamic link information from one symbol to the other. | |
| 3617 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
| 3618 | symbol as is normal for most other backends. We need foo dynamic | |
| 3619 | instead, at least for an application final link. However, when | |
| 3620 | creating a shared library containing foo, we need to have both symbols | |
| 3621 | dynamic so that references to .foo are satisfied during the early | |
| 3622 | stages of linking. Otherwise the linker might decide to pull in a | |
| 8387904d AM |
3623 | definition from some other object, eg. a static library. |
| 3624 | ||
| 3625 | Update: As of August 2004, we support a new convention. Function | |
| 3626 | calls may use the function descriptor symbol, ie. "bl foo". This | |
| 3627 | behaves exactly as "bl .foo". */ | |
| 65f38f15 | 3628 | |
| 1d483afe | 3629 | /* Of those relocs that might be copied as dynamic relocs, this function |
| 58ac9f71 AM |
3630 | selects those that must be copied when linking a shared library, |
| 3631 | even when the symbol is local. */ | |
| 65f38f15 | 3632 | |
| 1d483afe AM |
3633 | static int |
| 3634 | must_be_dyn_reloc (struct bfd_link_info *info, | |
| 3635 | enum elf_ppc64_reloc_type r_type) | |
| 3636 | { | |
| 3637 | switch (r_type) | |
| 3638 | { | |
| 3639 | default: | |
| 3640 | return 1; | |
| 3641 | ||
| 3642 | case R_PPC64_REL32: | |
| 3643 | case R_PPC64_REL64: | |
| 3644 | case R_PPC64_REL30: | |
| 3645 | return 0; | |
| 3646 | ||
| 3647 | case R_PPC64_TPREL16: | |
| 3648 | case R_PPC64_TPREL16_LO: | |
| 3649 | case R_PPC64_TPREL16_HI: | |
| 3650 | case R_PPC64_TPREL16_HA: | |
| 3651 | case R_PPC64_TPREL16_DS: | |
| 3652 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
3653 | case R_PPC64_TPREL16_HIGH: |
| 3654 | case R_PPC64_TPREL16_HIGHA: | |
| 1d483afe AM |
3655 | case R_PPC64_TPREL16_HIGHER: |
| 3656 | case R_PPC64_TPREL16_HIGHERA: | |
| 3657 | case R_PPC64_TPREL16_HIGHEST: | |
| 3658 | case R_PPC64_TPREL16_HIGHESTA: | |
| 3659 | case R_PPC64_TPREL64: | |
| 3660 | return !info->executable; | |
| 3661 | } | |
| 3662 | } | |
| 65f38f15 | 3663 | |
| f4656909 AM |
3664 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
| 3665 | copying dynamic variables from a shared lib into an app's dynbss | |
| 3666 | section, and instead use a dynamic relocation to point into the | |
| 5d35169e AM |
3667 | shared lib. With code that gcc generates, it's vital that this be |
| 3668 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
| 3669 | the address of a function descriptor, which resides in the .opd | |
| 3670 | section. gcc uses the descriptor directly rather than going via the | |
| 3671 | GOT as some other ABI's do, which means that initialized function | |
| 3672 | pointers must reference the descriptor. Thus, a function pointer | |
| 3673 | initialized to the address of a function in a shared library will | |
| 3674 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
| 4cc11e76 | 3675 | redefines the function descriptor symbol to point to the copy. This |
| 5d35169e AM |
3676 | presents a problem as a plt entry for that function is also |
| 3677 | initialized from the function descriptor symbol and the copy reloc | |
| 3678 | may not be initialized first. */ | |
| a23b6845 | 3679 | #define ELIMINATE_COPY_RELOCS 1 |
| f4656909 | 3680 | |
| 721956f4 | 3681 | /* Section name for stubs is the associated section name plus this |
| 29942be8 NC |
3682 | string. */ |
| 3683 | #define STUB_SUFFIX ".stub" | |
| 721956f4 AM |
3684 | |
| 3685 | /* Linker stubs. | |
| 3686 | ppc_stub_long_branch: | |
| 3687 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
| 3688 | destination, but a 24 bit branch in a stub section will reach. | |
| 3689 | . b dest | |
| 3690 | ||
| 3691 | ppc_stub_plt_branch: | |
| 3692 | Similar to the above, but a 24 bit branch in the stub section won't | |
| 3693 | reach its destination. | |
| 71a39c98 AM |
3694 | . addis %r11,%r2,xxx@toc@ha |
| 3695 | . ld %r12,xxx@toc@l(%r11) | |
| 3696 | . mtctr %r12 | |
| 721956f4 AM |
3697 | . bctr |
| 3698 | ||
| 3699 | ppc_stub_plt_call: | |
| 2c66dc6c AM |
3700 | Used to call a function in a shared library. If it so happens that |
| 3701 | the plt entry referenced crosses a 64k boundary, then an extra | |
| 71a39c98 | 3702 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
| 721956f4 | 3703 | . std %r2,40(%r1) |
| 71a39c98 AM |
3704 | . addis %r11,%r2,xxx@toc@ha |
| 3705 | . ld %r12,xxx+0@toc@l(%r11) | |
| 3706 | . mtctr %r12 | |
| 3707 | . ld %r2,xxx+8@toc@l(%r11) | |
| 3708 | . ld %r11,xxx+16@toc@l(%r11) | |
| 721956f4 | 3709 | . bctr |
| ad8e1ba5 AM |
3710 | |
| 3711 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
| 3712 | code to adjust the value and save r2 to support multiple toc sections. | |
| 3713 | A ppc_stub_long_branch with an r2 offset looks like: | |
| 3714 | . std %r2,40(%r1) | |
| 3715 | . addis %r2,%r2,off@ha | |
| 3716 | . addi %r2,%r2,off@l | |
| 3717 | . b dest | |
| 3718 | ||
| 3719 | A ppc_stub_plt_branch with an r2 offset looks like: | |
| 3720 | . std %r2,40(%r1) | |
| 71a39c98 AM |
3721 | . addis %r11,%r2,xxx@toc@ha |
| 3722 | . ld %r12,xxx@toc@l(%r11) | |
| ad8e1ba5 AM |
3723 | . addis %r2,%r2,off@ha |
| 3724 | . addi %r2,%r2,off@l | |
| 71a39c98 | 3725 | . mtctr %r12 |
| ad8e1ba5 | 3726 | . bctr |
| ac2df442 AM |
3727 | |
| 3728 | In cases where the "addis" instruction would add zero, the "addis" is | |
| 3729 | omitted and following instructions modified slightly in some cases. | |
| 721956f4 AM |
3730 | */ |
| 3731 | ||
| 3732 | enum ppc_stub_type { | |
| 3733 | ppc_stub_none, | |
| 3734 | ppc_stub_long_branch, | |
| ad8e1ba5 | 3735 | ppc_stub_long_branch_r2off, |
| 721956f4 | 3736 | ppc_stub_plt_branch, |
| ad8e1ba5 | 3737 | ppc_stub_plt_branch_r2off, |
| 794e51c0 AM |
3738 | ppc_stub_plt_call, |
| 3739 | ppc_stub_plt_call_r2save | |
| 721956f4 AM |
3740 | }; |
| 3741 | ||
| 3742 | struct ppc_stub_hash_entry { | |
| 3743 | ||
| 3744 | /* Base hash table entry structure. */ | |
| 3745 | struct bfd_hash_entry root; | |
| 3746 | ||
| ad8e1ba5 AM |
3747 | enum ppc_stub_type stub_type; |
| 3748 | ||
| 721956f4 AM |
3749 | /* The stub section. */ |
| 3750 | asection *stub_sec; | |
| 3751 | ||
| 3752 | /* Offset within stub_sec of the beginning of this stub. */ | |
| 3753 | bfd_vma stub_offset; | |
| 3754 | ||
| 3755 | /* Given the symbol's value and its section we can determine its final | |
| 3756 | value when building the stubs (so the stub knows where to jump. */ | |
| 3757 | bfd_vma target_value; | |
| 3758 | asection *target_section; | |
| 3759 | ||
| 721956f4 AM |
3760 | /* The symbol table entry, if any, that this was derived from. */ |
| 3761 | struct ppc_link_hash_entry *h; | |
| e054468f | 3762 | struct plt_entry *plt_ent; |
| 721956f4 AM |
3763 | |
| 3764 | /* Where this stub is being called from, or, in the case of combined | |
| 3765 | stub sections, the first input section in the group. */ | |
| 3766 | asection *id_sec; | |
| 6911b7dc AM |
3767 | |
| 3768 | /* Symbol st_other. */ | |
| 3769 | unsigned char other; | |
| 721956f4 AM |
3770 | }; |
| 3771 | ||
| 3772 | struct ppc_branch_hash_entry { | |
| 3773 | ||
| 3774 | /* Base hash table entry structure. */ | |
| 3775 | struct bfd_hash_entry root; | |
| 3776 | ||
| c456f082 | 3777 | /* Offset within branch lookup table. */ |
| 721956f4 AM |
3778 | unsigned int offset; |
| 3779 | ||
| 3780 | /* Generation marker. */ | |
| 3781 | unsigned int iter; | |
| 3782 | }; | |
| 65f38f15 | 3783 | |
| 19e08130 AM |
3784 | /* Used to track dynamic relocations for local symbols. */ |
| 3785 | struct ppc_dyn_relocs | |
| 3786 | { | |
| 3787 | struct ppc_dyn_relocs *next; | |
| 3788 | ||
| 3789 | /* The input section of the reloc. */ | |
| 3790 | asection *sec; | |
| 3791 | ||
| 3792 | /* Total number of relocs copied for the input section. */ | |
| 3793 | unsigned int count : 31; | |
| 3794 | ||
| 3795 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
| 3796 | unsigned int ifunc : 1; | |
| 3797 | }; | |
| 3798 | ||
| 65f38f15 AM |
3799 | struct ppc_link_hash_entry |
| 3800 | { | |
| 3801 | struct elf_link_hash_entry elf; | |
| 3802 | ||
| b3fac117 AM |
3803 | union { |
| 3804 | /* A pointer to the most recently used stub hash entry against this | |
| 3805 | symbol. */ | |
| 3806 | struct ppc_stub_hash_entry *stub_cache; | |
| 3807 | ||
| 3808 | /* A pointer to the next symbol starting with a '.' */ | |
| 3809 | struct ppc_link_hash_entry *next_dot_sym; | |
| 3810 | } u; | |
| 721956f4 | 3811 | |
| 65f38f15 | 3812 | /* Track dynamic relocs copied for this symbol. */ |
| 6061a67d | 3813 | struct elf_dyn_relocs *dyn_relocs; |
| e86ce104 | 3814 | |
| 721956f4 | 3815 | /* Link between function code and descriptor symbols. */ |
| 34814b9f | 3816 | struct ppc_link_hash_entry *oh; |
| 721956f4 | 3817 | |
| e86ce104 AM |
3818 | /* Flag function code and descriptor symbols. */ |
| 3819 | unsigned int is_func:1; | |
| 3820 | unsigned int is_func_descriptor:1; | |
| 908b32fc | 3821 | unsigned int fake:1; |
| 411e1bfb | 3822 | |
| c5614fa4 AM |
3823 | /* Whether global opd/toc sym has been adjusted or not. |
| 3824 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
| 3825 | should be set for all globals defined in any opd/toc section. */ | |
| 754021d0 AM |
3826 | unsigned int adjust_done:1; |
| 3827 | ||
| 99877b66 AM |
3828 | /* Set if we twiddled this symbol to weak at some stage. */ |
| 3829 | unsigned int was_undefined:1; | |
| 3830 | ||
| 411e1bfb | 3831 | /* Contexts in which symbol is used in the GOT (or TOC). |
| e7b938ca AM |
3832 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
| 3833 | corresponding relocs are encountered during check_relocs. | |
| 3834 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
| 3835 | indicate the corresponding GOT entry type is not needed. | |
| 3836 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
| 3837 | a TPREL one. We use a separate flag rather than setting TPREL | |
| 3838 | just for convenience in distinguishing the two cases. */ | |
| 3839 | #define TLS_GD 1 /* GD reloc. */ | |
| 3840 | #define TLS_LD 2 /* LD reloc. */ | |
| 3841 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
| 3842 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
| 3843 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
| 3844 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
| 3845 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
| e054468f | 3846 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
| f961d9dd | 3847 | unsigned char tls_mask; |
| 65f38f15 AM |
3848 | }; |
| 3849 | ||
| 3850 | /* ppc64 ELF linker hash table. */ | |
| 3851 | ||
| 3852 | struct ppc_link_hash_table | |
| 3853 | { | |
| 3854 | struct elf_link_hash_table elf; | |
| 3855 | ||
| 721956f4 AM |
3856 | /* The stub hash table. */ |
| 3857 | struct bfd_hash_table stub_hash_table; | |
| 3858 | ||
| 3859 | /* Another hash table for plt_branch stubs. */ | |
| 3860 | struct bfd_hash_table branch_hash_table; | |
| 3861 | ||
| 3b421ab3 AM |
3862 | /* Hash table for function prologue tocsave. */ |
| 3863 | htab_t tocsave_htab; | |
| 3864 | ||
| 721956f4 AM |
3865 | /* Linker stub bfd. */ |
| 3866 | bfd *stub_bfd; | |
| 3867 | ||
| 3868 | /* Linker call-backs. */ | |
| 4ce794b7 AM |
3869 | asection * (*add_stub_section) (const char *, asection *); |
| 3870 | void (*layout_sections_again) (void); | |
| 721956f4 AM |
3871 | |
| 3872 | /* Array to keep track of which stub sections have been created, and | |
| 3873 | information on stub grouping. */ | |
| 3874 | struct map_stub { | |
| 3875 | /* This is the section to which stubs in the group will be attached. */ | |
| 3876 | asection *link_sec; | |
| 3877 | /* The stub section. */ | |
| 3878 | asection *stub_sec; | |
| ad8e1ba5 AM |
3879 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
| 3880 | bfd_vma toc_off; | |
| 721956f4 AM |
3881 | } *stub_group; |
| 3882 | ||
| ad8e1ba5 AM |
3883 | /* Temp used when calculating TOC pointers. */ |
| 3884 | bfd_vma toc_curr; | |
| bf102f86 AM |
3885 | bfd *toc_bfd; |
| 3886 | asection *toc_first_sec; | |
| ad8e1ba5 | 3887 | |
| 8f3bab57 AM |
3888 | /* Highest input section id. */ |
| 3889 | int top_id; | |
| 3890 | ||
| 734b6cf9 AM |
3891 | /* Highest output section index. */ |
| 3892 | int top_index; | |
| 3893 | ||
| b3fac117 AM |
3894 | /* Used when adding symbols. */ |
| 3895 | struct ppc_link_hash_entry *dot_syms; | |
| 3896 | ||
| 734b6cf9 AM |
3897 | /* List of input sections for each output section. */ |
| 3898 | asection **input_list; | |
| 721956f4 | 3899 | |
| 65f38f15 | 3900 | /* Short-cuts to get to dynamic linker sections. */ |
| 4ce794b7 | 3901 | asection *got; |
| 4ce794b7 AM |
3902 | asection *plt; |
| 3903 | asection *relplt; | |
| e054468f AM |
3904 | asection *iplt; |
| 3905 | asection *reliplt; | |
| 4ce794b7 AM |
3906 | asection *dynbss; |
| 3907 | asection *relbss; | |
| 3908 | asection *glink; | |
| 82bd7b59 | 3909 | asection *sfpr; |
| 4ce794b7 AM |
3910 | asection *brlt; |
| 3911 | asection *relbrlt; | |
| 58d180e8 | 3912 | asection *glink_eh_frame; |
| ec338859 | 3913 | |
| 8387904d AM |
3914 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
| 3915 | struct ppc_link_hash_entry *tls_get_addr; | |
| 3916 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
| 411e1bfb | 3917 | |
| 927be08e AM |
3918 | /* The size of reliplt used by got entry relocs. */ |
| 3919 | bfd_size_type got_reli_size; | |
| 3920 | ||
| 9b5ecbd0 | 3921 | /* Statistics. */ |
| 794e51c0 | 3922 | unsigned long stub_count[ppc_stub_plt_call_r2save]; |
| 9b5ecbd0 | 3923 | |
| ee75fd95 AM |
3924 | /* Number of stubs against global syms. */ |
| 3925 | unsigned long stub_globals; | |
| 3926 | ||
| 794e51c0 AM |
3927 | /* Alignment of PLT call stubs. */ |
| 3928 | unsigned int plt_stub_align:4; | |
| 3929 | ||
| ee67d69a AM |
3930 | /* Set if we're linking code with function descriptors. */ |
| 3931 | unsigned int opd_abi:1; | |
| 3932 | ||
| 9df0ef5f AM |
3933 | /* Set if PLT call stubs should load r11. */ |
| 3934 | unsigned int plt_static_chain:1; | |
| 3935 | ||
| 794e51c0 AM |
3936 | /* Set if PLT call stubs need a read-read barrier. */ |
| 3937 | unsigned int plt_thread_safe:1; | |
| 3938 | ||
| ad8e1ba5 | 3939 | /* Set if we should emit symbols for stubs. */ |
| 99877b66 | 3940 | unsigned int emit_stub_syms:1; |
| ad8e1ba5 | 3941 | |
| a7f2871e AM |
3942 | /* Set if __tls_get_addr optimization should not be done. */ |
| 3943 | unsigned int no_tls_get_addr_opt:1; | |
| 3944 | ||
| 4c52953f | 3945 | /* Support for multiple toc sections. */ |
| 33c0ec9d | 3946 | unsigned int do_multi_toc:1; |
| 4c52953f | 3947 | unsigned int multi_toc_needed:1; |
| 927be08e | 3948 | unsigned int second_toc_pass:1; |
| 67f0cbdb | 3949 | unsigned int do_toc_opt:1; |
| 4c52953f | 3950 | |
| 5d1634d7 | 3951 | /* Set on error. */ |
| 99877b66 | 3952 | unsigned int stub_error:1; |
| 721956f4 | 3953 | |
| 7d9616d7 | 3954 | /* Temp used by ppc64_elf_process_dot_syms. */ |
| 99877b66 | 3955 | unsigned int twiddled_syms:1; |
| 721956f4 AM |
3956 | |
| 3957 | /* Incremented every time we size stubs. */ | |
| 3958 | unsigned int stub_iteration; | |
| 5d1634d7 | 3959 | |
| 87d72d41 AM |
3960 | /* Small local sym cache. */ |
| 3961 | struct sym_cache sym_cache; | |
| 65f38f15 AM |
3962 | }; |
| 3963 | ||
| 4c52953f AM |
3964 | /* Rename some of the generic section flags to better document how they |
| 3965 | are used here. */ | |
| b0dddeec AM |
3966 | |
| 3967 | /* Nonzero if this section has TLS related relocations. */ | |
| 3968 | #define has_tls_reloc sec_flg0 | |
| 3969 | ||
| 3970 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
| 3971 | #define has_tls_get_addr_call sec_flg1 | |
| 3972 | ||
| 3973 | /* Nonzero if this section has any toc or got relocs. */ | |
| 3974 | #define has_toc_reloc sec_flg2 | |
| 3975 | ||
| 3976 | /* Nonzero if this section has a call to another section that uses | |
| 3977 | the toc or got. */ | |
| d77c8a4b | 3978 | #define makes_toc_func_call sec_flg3 |
| b0dddeec AM |
3979 | |
| 3980 | /* Recursion protection when determining above flag. */ | |
| d77c8a4b | 3981 | #define call_check_in_progress sec_flg4 |
| 70cc837d | 3982 | #define call_check_done sec_flg5 |
| 4c52953f | 3983 | |
| 65f38f15 AM |
3984 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
| 3985 | ||
| 3986 | #define ppc_hash_table(p) \ | |
| 4dfe6ac6 NC |
3987 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 3988 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
| 65f38f15 | 3989 | |
| 721956f4 AM |
3990 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
| 3991 | ((struct ppc_stub_hash_entry *) \ | |
| 3992 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3993 | ||
| 3994 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
| 3995 | ((struct ppc_branch_hash_entry *) \ | |
| 3996 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3997 | ||
| 3998 | /* Create an entry in the stub hash table. */ | |
| 3999 | ||
| 4000 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4001 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
| 4002 | struct bfd_hash_table *table, | |
| 4003 | const char *string) | |
| 721956f4 AM |
4004 | { |
| 4005 | /* Allocate the structure if it has not already been allocated by a | |
| 4006 | subclass. */ | |
| 4007 | if (entry == NULL) | |
| 4008 | { | |
| 4009 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
| 4010 | if (entry == NULL) | |
| 4011 | return entry; | |
| 4012 | } | |
| 4013 | ||
| 4014 | /* Call the allocation method of the superclass. */ | |
| 4015 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4016 | if (entry != NULL) | |
| 4017 | { | |
| 4018 | struct ppc_stub_hash_entry *eh; | |
| 4019 | ||
| 4020 | /* Initialize the local fields. */ | |
| 4021 | eh = (struct ppc_stub_hash_entry *) entry; | |
| ad8e1ba5 | 4022 | eh->stub_type = ppc_stub_none; |
| 721956f4 AM |
4023 | eh->stub_sec = NULL; |
| 4024 | eh->stub_offset = 0; | |
| 4025 | eh->target_value = 0; | |
| 4026 | eh->target_section = NULL; | |
| 721956f4 | 4027 | eh->h = NULL; |
| 6911b7dc | 4028 | eh->plt_ent = NULL; |
| 721956f4 | 4029 | eh->id_sec = NULL; |
| 6911b7dc | 4030 | eh->other = 0; |
| 721956f4 AM |
4031 | } |
| 4032 | ||
| 4033 | return entry; | |
| 4034 | } | |
| 4035 | ||
| 4036 | /* Create an entry in the branch hash table. */ | |
| 4037 | ||
| 4038 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4039 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
| 4040 | struct bfd_hash_table *table, | |
| 4041 | const char *string) | |
| 721956f4 AM |
4042 | { |
| 4043 | /* Allocate the structure if it has not already been allocated by a | |
| 4044 | subclass. */ | |
| 4045 | if (entry == NULL) | |
| 4046 | { | |
| 4047 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
| 4048 | if (entry == NULL) | |
| 4049 | return entry; | |
| 4050 | } | |
| 4051 | ||
| 4052 | /* Call the allocation method of the superclass. */ | |
| 4053 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4054 | if (entry != NULL) | |
| 4055 | { | |
| 4056 | struct ppc_branch_hash_entry *eh; | |
| 4057 | ||
| 4058 | /* Initialize the local fields. */ | |
| 4059 | eh = (struct ppc_branch_hash_entry *) entry; | |
| 4060 | eh->offset = 0; | |
| 4061 | eh->iter = 0; | |
| 4062 | } | |
| 4063 | ||
| 4064 | return entry; | |
| 4065 | } | |
| 4066 | ||
| 65f38f15 AM |
4067 | /* Create an entry in a ppc64 ELF linker hash table. */ |
| 4068 | ||
| 4069 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4070 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 4071 | struct bfd_hash_table *table, | |
| 4072 | const char *string) | |
| 65f38f15 AM |
4073 | { |
| 4074 | /* Allocate the structure if it has not already been allocated by a | |
| 4075 | subclass. */ | |
| 4076 | if (entry == NULL) | |
| 4077 | { | |
| 4078 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
| 4079 | if (entry == NULL) | |
| 4080 | return entry; | |
| 4081 | } | |
| 4082 | ||
| 4083 | /* Call the allocation method of the superclass. */ | |
| 4084 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
| 4085 | if (entry != NULL) | |
| 4086 | { | |
| 4087 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
| 4088 | ||
| b3fac117 | 4089 | memset (&eh->u.stub_cache, 0, |
| 908b32fc | 4090 | (sizeof (struct ppc_link_hash_entry) |
| b3fac117 AM |
4091 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
| 4092 | ||
| 4093 | /* When making function calls, old ABI code references function entry | |
| 4094 | points (dot symbols), while new ABI code references the function | |
| 4095 | descriptor symbol. We need to make any combination of reference and | |
| 4096 | definition work together, without breaking archive linking. | |
| 4097 | ||
| 4098 | For a defined function "foo" and an undefined call to "bar": | |
| 4099 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
| 4100 | "bar" too). | |
| 4101 | A new object defines "foo" and references "bar". | |
| 4102 | ||
| 4103 | A new object thus has no problem with its undefined symbols being | |
| 4104 | satisfied by definitions in an old object. On the other hand, the | |
| 4105 | old object won't have ".bar" satisfied by a new object. | |
| 4106 | ||
| 4107 | Keep a list of newly added dot-symbols. */ | |
| 4108 | ||
| 4109 | if (string[0] == '.') | |
| 4110 | { | |
| 4111 | struct ppc_link_hash_table *htab; | |
| 4112 | ||
| 4113 | htab = (struct ppc_link_hash_table *) table; | |
| 4114 | eh->u.next_dot_sym = htab->dot_syms; | |
| 4115 | htab->dot_syms = eh; | |
| 4116 | } | |
| 65f38f15 AM |
4117 | } |
| 4118 | ||
| 4119 | return entry; | |
| 4120 | } | |
| 4121 | ||
| 3b421ab3 AM |
4122 | struct tocsave_entry { |
| 4123 | asection *sec; | |
| 4124 | bfd_vma offset; | |
| 4125 | }; | |
| 4126 | ||
| 4127 | static hashval_t | |
| 4128 | tocsave_htab_hash (const void *p) | |
| 4129 | { | |
| 4130 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
| 4131 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
| 4132 | } | |
| 4133 | ||
| 4134 | static int | |
| 4135 | tocsave_htab_eq (const void *p1, const void *p2) | |
| 4136 | { | |
| 4137 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
| 4138 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
| 4139 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
| 4140 | } | |
| 4141 | ||
| 65f38f15 AM |
4142 | /* Create a ppc64 ELF linker hash table. */ |
| 4143 | ||
| 4144 | static struct bfd_link_hash_table * | |
| 4ce794b7 | 4145 | ppc64_elf_link_hash_table_create (bfd *abfd) |
| 65f38f15 AM |
4146 | { |
| 4147 | struct ppc_link_hash_table *htab; | |
| 4148 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
| 4149 | ||
| 4ce794b7 | 4150 | htab = bfd_zmalloc (amt); |
| 65f38f15 AM |
4151 | if (htab == NULL) |
| 4152 | return NULL; | |
| 4153 | ||
| 66eb6687 | 4154 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
| 4dfe6ac6 NC |
4155 | sizeof (struct ppc_link_hash_entry), |
| 4156 | PPC64_ELF_DATA)) | |
| 65f38f15 | 4157 | { |
| e2d34d7d | 4158 | free (htab); |
| 65f38f15 AM |
4159 | return NULL; |
| 4160 | } | |
| 4161 | ||
| 721956f4 | 4162 | /* Init the stub hash table too. */ |
| 66eb6687 AM |
4163 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
| 4164 | sizeof (struct ppc_stub_hash_entry))) | |
| 721956f4 AM |
4165 | return NULL; |
| 4166 | ||
| 4167 | /* And the branch hash table. */ | |
| 66eb6687 AM |
4168 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
| 4169 | sizeof (struct ppc_branch_hash_entry))) | |
| 721956f4 AM |
4170 | return NULL; |
| 4171 | ||
| 3b421ab3 AM |
4172 | htab->tocsave_htab = htab_try_create (1024, |
| 4173 | tocsave_htab_hash, | |
| 4174 | tocsave_htab_eq, | |
| 4175 | NULL); | |
| 4176 | if (htab->tocsave_htab == NULL) | |
| 4177 | return NULL; | |
| 4178 | ||
| 3254fd24 AM |
4179 | /* Initializing two fields of the union is just cosmetic. We really |
| 4180 | only care about glist, but when compiled on a 32-bit host the | |
| 4181 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
| 4182 | debugger inspection of these fields look nicer. */ | |
| a6aa5195 AM |
4183 | htab->elf.init_got_refcount.refcount = 0; |
| 4184 | htab->elf.init_got_refcount.glist = NULL; | |
| 4185 | htab->elf.init_plt_refcount.refcount = 0; | |
| 4186 | htab->elf.init_plt_refcount.glist = NULL; | |
| 4187 | htab->elf.init_got_offset.offset = 0; | |
| 4188 | htab->elf.init_got_offset.glist = NULL; | |
| 4189 | htab->elf.init_plt_offset.offset = 0; | |
| 4190 | htab->elf.init_plt_offset.glist = NULL; | |
| 3254fd24 | 4191 | |
| 65f38f15 AM |
4192 | return &htab->elf.root; |
| 4193 | } | |
| 4194 | ||
| 721956f4 AM |
4195 | /* Free the derived linker hash table. */ |
| 4196 | ||
| 4197 | static void | |
| 4ce794b7 | 4198 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
| 721956f4 | 4199 | { |
| 3b421ab3 | 4200 | struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash; |
| 721956f4 | 4201 | |
| 3b421ab3 AM |
4202 | bfd_hash_table_free (&htab->stub_hash_table); |
| 4203 | bfd_hash_table_free (&htab->branch_hash_table); | |
| 4204 | if (htab->tocsave_htab) | |
| 4205 | htab_delete (htab->tocsave_htab); | |
| 9f7c3e5e | 4206 | _bfd_elf_link_hash_table_free (hash); |
| 721956f4 AM |
4207 | } |
| 4208 | ||
| bfeb4a28 AM |
4209 | /* Create sections for linker generated code. */ |
| 4210 | ||
| 4211 | static bfd_boolean | |
| 4212 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
| 4213 | { | |
| 4214 | struct ppc_link_hash_table *htab; | |
| 4215 | flagword flags; | |
| 4216 | ||
| 4217 | htab = ppc_hash_table (info); | |
| 4218 | ||
| 4219 | /* Create .sfpr for code to save and restore fp regs. */ | |
| 4220 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
| 4221 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4222 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
| 4223 | flags); | |
| 4224 | if (htab->sfpr == NULL | |
| 4225 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
| 4226 | return FALSE; | |
| 4227 | ||
| 4228 | /* Create .glink for lazy dynamic linking support. */ | |
| 4229 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
| 4230 | flags); | |
| 4231 | if (htab->glink == NULL | |
| 4232 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
| 4233 | return FALSE; | |
| 4234 | ||
| 4235 | if (!info->no_ld_generated_unwind_info) | |
| 4236 | { | |
| 4237 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
| 4238 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4239 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
| 4240 | ".eh_frame", | |
| 4241 | flags); | |
| 4242 | if (htab->glink_eh_frame == NULL | |
| 4243 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
| 4244 | return FALSE; | |
| 4245 | } | |
| 4246 | ||
| 4247 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
| 4248 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
| 4249 | if (htab->iplt == NULL | |
| 4250 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
| 4251 | return FALSE; | |
| 4252 | ||
| 4253 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4254 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4255 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4256 | ".rela.iplt", | |
| 4257 | flags); | |
| 4258 | if (htab->reliplt == NULL | |
| 4259 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
| 4260 | return FALSE; | |
| 4261 | ||
| 4262 | /* Create branch lookup table for plt_branch stubs. */ | |
| 4263 | flags = (SEC_ALLOC | SEC_LOAD | |
| 4264 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4265 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
| 4266 | flags); | |
| 4267 | if (htab->brlt == NULL | |
| 4268 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
| 4269 | return FALSE; | |
| 4270 | ||
| 4271 | if (!info->shared) | |
| 4272 | return TRUE; | |
| 4273 | ||
| 4274 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4275 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4276 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4277 | ".rela.branch_lt", | |
| 4278 | flags); | |
| 4279 | if (htab->relbrlt == NULL | |
| 4280 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
| 4281 | return FALSE; | |
| 4282 | ||
| 4283 | return TRUE; | |
| 4284 | } | |
| 4285 | ||
| e717da7e AM |
4286 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
| 4287 | ||
| bfeb4a28 | 4288 | bfd_boolean |
| e717da7e AM |
4289 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) |
| 4290 | { | |
| 4291 | struct ppc_link_hash_table *htab; | |
| 4292 | ||
| 4293 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
| 4294 | ||
| 4295 | /* Always hook our dynamic sections into the first bfd, which is the | |
| 4296 | linker created stub bfd. This ensures that the GOT header is at | |
| 4297 | the start of the output TOC section. */ | |
| 4298 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 | 4299 | if (htab == NULL) |
| bfeb4a28 | 4300 | return FALSE; |
| e717da7e AM |
4301 | htab->stub_bfd = abfd; |
| 4302 | htab->elf.dynobj = abfd; | |
| bfeb4a28 AM |
4303 | |
| 4304 | if (info->relocatable) | |
| 4305 | return TRUE; | |
| 4306 | ||
| 4307 | return create_linkage_sections (htab->elf.dynobj, info); | |
| e717da7e AM |
4308 | } |
| 4309 | ||
| 721956f4 AM |
4310 | /* Build a name for an entry in the stub hash table. */ |
| 4311 | ||
| 4312 | static char * | |
| 4ce794b7 AM |
4313 | ppc_stub_name (const asection *input_section, |
| 4314 | const asection *sym_sec, | |
| 4315 | const struct ppc_link_hash_entry *h, | |
| 4316 | const Elf_Internal_Rela *rel) | |
| 721956f4 AM |
4317 | { |
| 4318 | char *stub_name; | |
| bcaa2f82 | 4319 | ssize_t len; |
| 721956f4 AM |
4320 | |
| 4321 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
| 4322 | offsets from a sym as a branch target? In fact, we could | |
| 4323 | probably assume the addend is always zero. */ | |
| 4324 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
| 4325 | ||
| 4326 | if (h) | |
| 4327 | { | |
| 4328 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
| 4329 | stub_name = bfd_malloc (len); | |
| 46de2a7c AM |
4330 | if (stub_name == NULL) |
| 4331 | return stub_name; | |
| 4332 | ||
| bcaa2f82 AM |
4333 | len = sprintf (stub_name, "%08x.%s+%x", |
| 4334 | input_section->id & 0xffffffff, | |
| 4335 | h->elf.root.root.string, | |
| 4336 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 AM |
4337 | } |
| 4338 | else | |
| 4339 | { | |
| ad8e1ba5 | 4340 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
| 721956f4 | 4341 | stub_name = bfd_malloc (len); |
| 46de2a7c AM |
4342 | if (stub_name == NULL) |
| 4343 | return stub_name; | |
| 4344 | ||
| bcaa2f82 AM |
4345 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
| 4346 | input_section->id & 0xffffffff, | |
| 4347 | sym_sec->id & 0xffffffff, | |
| 4348 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
| 4349 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 | 4350 | } |
| bcaa2f82 | 4351 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
| ee75fd95 | 4352 | stub_name[len - 2] = 0; |
| 721956f4 AM |
4353 | return stub_name; |
| 4354 | } | |
| 4355 | ||
| 4356 | /* Look up an entry in the stub hash. Stub entries are cached because | |
| 4357 | creating the stub name takes a bit of time. */ | |
| 4358 | ||
| 4359 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4360 | ppc_get_stub_entry (const asection *input_section, |
| 4361 | const asection *sym_sec, | |
| 039b3fef | 4362 | struct ppc_link_hash_entry *h, |
| 4ce794b7 AM |
4363 | const Elf_Internal_Rela *rel, |
| 4364 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
4365 | { |
| 4366 | struct ppc_stub_hash_entry *stub_entry; | |
| 721956f4 AM |
4367 | const asection *id_sec; |
| 4368 | ||
| 4369 | /* If this input section is part of a group of sections sharing one | |
| 4370 | stub section, then use the id of the first section in the group. | |
| 4371 | Stub names need to include a section id, as there may well be | |
| 4372 | more than one stub used to reach say, printf, and we need to | |
| 4373 | distinguish between them. */ | |
| 4374 | id_sec = htab->stub_group[input_section->id].link_sec; | |
| 4375 | ||
| b3fac117 AM |
4376 | if (h != NULL && h->u.stub_cache != NULL |
| 4377 | && h->u.stub_cache->h == h | |
| 4378 | && h->u.stub_cache->id_sec == id_sec) | |
| 721956f4 | 4379 | { |
| b3fac117 | 4380 | stub_entry = h->u.stub_cache; |
| 721956f4 AM |
4381 | } |
| 4382 | else | |
| 4383 | { | |
| 4384 | char *stub_name; | |
| 4385 | ||
| 4386 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
| 4387 | if (stub_name == NULL) | |
| 4388 | return NULL; | |
| 4389 | ||
| 4390 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 4391 | stub_name, FALSE, FALSE); |
| 721956f4 | 4392 | if (h != NULL) |
| b3fac117 | 4393 | h->u.stub_cache = stub_entry; |
| 721956f4 AM |
4394 | |
| 4395 | free (stub_name); | |
| 4396 | } | |
| 4397 | ||
| 4398 | return stub_entry; | |
| 4399 | } | |
| 4400 | ||
| 4401 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
| 4402 | stub entry are initialised. */ | |
| 4403 | ||
| 4404 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4405 | ppc_add_stub (const char *stub_name, |
| 4406 | asection *section, | |
| 25f53a85 | 4407 | struct bfd_link_info *info) |
| 721956f4 | 4408 | { |
| 25f53a85 | 4409 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 721956f4 AM |
4410 | asection *link_sec; |
| 4411 | asection *stub_sec; | |
| 4412 | struct ppc_stub_hash_entry *stub_entry; | |
| 4413 | ||
| 4414 | link_sec = htab->stub_group[section->id].link_sec; | |
| 4415 | stub_sec = htab->stub_group[section->id].stub_sec; | |
| 4416 | if (stub_sec == NULL) | |
| 4417 | { | |
| 4418 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
| 4419 | if (stub_sec == NULL) | |
| 4420 | { | |
| d4c88bbb | 4421 | size_t namelen; |
| 721956f4 AM |
4422 | bfd_size_type len; |
| 4423 | char *s_name; | |
| 4424 | ||
| d4c88bbb AM |
4425 | namelen = strlen (link_sec->name); |
| 4426 | len = namelen + sizeof (STUB_SUFFIX); | |
| 721956f4 AM |
4427 | s_name = bfd_alloc (htab->stub_bfd, len); |
| 4428 | if (s_name == NULL) | |
| 4429 | return NULL; | |
| 4430 | ||
| d4c88bbb AM |
4431 | memcpy (s_name, link_sec->name, namelen); |
| 4432 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
| 721956f4 AM |
4433 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
| 4434 | if (stub_sec == NULL) | |
| 4435 | return NULL; | |
| 4436 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
| 4437 | } | |
| 4438 | htab->stub_group[section->id].stub_sec = stub_sec; | |
| 4439 | } | |
| 4440 | ||
| 4441 | /* Enter this entry into the linker stub hash table. */ | |
| 4442 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
| b34976b6 | 4443 | TRUE, FALSE); |
| 721956f4 AM |
4444 | if (stub_entry == NULL) |
| 4445 | { | |
| 8de848d8 | 4446 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
| 25f53a85 | 4447 | section->owner, stub_name); |
| 721956f4 AM |
4448 | return NULL; |
| 4449 | } | |
| 4450 | ||
| 4451 | stub_entry->stub_sec = stub_sec; | |
| 4452 | stub_entry->stub_offset = 0; | |
| 4453 | stub_entry->id_sec = link_sec; | |
| 4454 | return stub_entry; | |
| 4455 | } | |
| 4456 | ||
| e717da7e AM |
4457 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
| 4458 | not already done. */ | |
| 65f38f15 | 4459 | |
| b34976b6 | 4460 | static bfd_boolean |
| e717da7e | 4461 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 65f38f15 | 4462 | { |
| e717da7e AM |
4463 | asection *got, *relgot; |
| 4464 | flagword flags; | |
| 4465 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 65f38f15 | 4466 | |
| 0c8d6e5c | 4467 | if (!is_ppc64_elf (abfd)) |
| 0ffa91dd | 4468 | return FALSE; |
| 4dfe6ac6 NC |
4469 | if (htab == NULL) |
| 4470 | return FALSE; | |
| 0ffa91dd | 4471 | |
| 4ce794b7 | 4472 | if (!htab->got) |
| e717da7e AM |
4473 | { |
| 4474 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
| 4475 | return FALSE; | |
| 4476 | ||
| 3d4d4302 | 4477 | htab->got = bfd_get_linker_section (htab->elf.dynobj, ".got"); |
| e717da7e AM |
4478 | if (!htab->got) |
| 4479 | abort (); | |
| 4480 | } | |
| 4481 | ||
| 4482 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
| 4483 | | SEC_LINKER_CREATED); | |
| 4484 | ||
| c456f082 | 4485 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
| e717da7e | 4486 | if (!got |
| e717da7e AM |
4487 | || !bfd_set_section_alignment (abfd, got, 3)) |
| 4488 | return FALSE; | |
| 65f38f15 | 4489 | |
| c456f082 AM |
4490 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
| 4491 | flags | SEC_READONLY); | |
| e717da7e | 4492 | if (!relgot |
| e717da7e | 4493 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
| b34976b6 | 4494 | return FALSE; |
| e717da7e AM |
4495 | |
| 4496 | ppc64_elf_tdata (abfd)->got = got; | |
| 4497 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
| b34976b6 | 4498 | return TRUE; |
| 65f38f15 | 4499 | } |
| 5bd4f169 | 4500 | |
| 82bd7b59 | 4501 | /* Create the dynamic sections, and set up shortcuts. */ |
| 5bd4f169 | 4502 | |
| b34976b6 | 4503 | static bfd_boolean |
| 4ce794b7 | 4504 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
| 5bd4f169 | 4505 | { |
| 65f38f15 | 4506 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 4507 | |
| 65f38f15 | 4508 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| b34976b6 | 4509 | return FALSE; |
| 65f38f15 | 4510 | |
| e717da7e | 4511 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
4512 | if (htab == NULL) |
| 4513 | return FALSE; | |
| 4514 | ||
| e717da7e | 4515 | if (!htab->got) |
| 3d4d4302 AM |
4516 | htab->got = bfd_get_linker_section (dynobj, ".got"); |
| 4517 | htab->plt = bfd_get_linker_section (dynobj, ".plt"); | |
| 4518 | htab->relplt = bfd_get_linker_section (dynobj, ".rela.plt"); | |
| 4519 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
| 65f38f15 | 4520 | if (!info->shared) |
| 3d4d4302 | 4521 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
| 65f38f15 | 4522 | |
| e717da7e | 4523 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
| 4ce794b7 | 4524 | || (!info->shared && !htab->relbss)) |
| 65f38f15 AM |
4525 | abort (); |
| 4526 | ||
| b34976b6 | 4527 | return TRUE; |
| 5bd4f169 AM |
4528 | } |
| 4529 | ||
| b31867b6 AM |
4530 | /* Follow indirect and warning symbol links. */ |
| 4531 | ||
| 4532 | static inline struct bfd_link_hash_entry * | |
| 4533 | follow_link (struct bfd_link_hash_entry *h) | |
| 4534 | { | |
| 4535 | while (h->type == bfd_link_hash_indirect | |
| 4536 | || h->type == bfd_link_hash_warning) | |
| 4537 | h = h->u.i.link; | |
| 4538 | return h; | |
| 4539 | } | |
| 4540 | ||
| 4541 | static inline struct elf_link_hash_entry * | |
| 4542 | elf_follow_link (struct elf_link_hash_entry *h) | |
| 4543 | { | |
| 4544 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
| 4545 | } | |
| 4546 | ||
| 4547 | static inline struct ppc_link_hash_entry * | |
| 4548 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
| 4549 | { | |
| 4550 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
| 4551 | } | |
| 4552 | ||
| 40d16e0b AM |
4553 | /* Merge PLT info on FROM with that on TO. */ |
| 4554 | ||
| 4555 | static void | |
| 4556 | move_plt_plist (struct ppc_link_hash_entry *from, | |
| 4557 | struct ppc_link_hash_entry *to) | |
| 4558 | { | |
| 4559 | if (from->elf.plt.plist != NULL) | |
| 4560 | { | |
| 4561 | if (to->elf.plt.plist != NULL) | |
| 4562 | { | |
| 4563 | struct plt_entry **entp; | |
| 4564 | struct plt_entry *ent; | |
| 4565 | ||
| 4566 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
| 4567 | { | |
| 4568 | struct plt_entry *dent; | |
| 4569 | ||
| 4570 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
| 4571 | if (dent->addend == ent->addend) | |
| 4572 | { | |
| 4573 | dent->plt.refcount += ent->plt.refcount; | |
| 4574 | *entp = ent->next; | |
| 4575 | break; | |
| 4576 | } | |
| 4577 | if (dent == NULL) | |
| 4578 | entp = &ent->next; | |
| 4579 | } | |
| 4580 | *entp = to->elf.plt.plist; | |
| 4581 | } | |
| 4582 | ||
| 4583 | to->elf.plt.plist = from->elf.plt.plist; | |
| 4584 | from->elf.plt.plist = NULL; | |
| 4585 | } | |
| 4586 | } | |
| 4587 | ||
| 65f38f15 AM |
4588 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 4589 | ||
| 4590 | static void | |
| fcfa13d2 AM |
4591 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 4592 | struct elf_link_hash_entry *dir, | |
| 4593 | struct elf_link_hash_entry *ind) | |
| 65f38f15 AM |
4594 | { |
| 4595 | struct ppc_link_hash_entry *edir, *eind; | |
| 4596 | ||
| 4597 | edir = (struct ppc_link_hash_entry *) dir; | |
| 4598 | eind = (struct ppc_link_hash_entry *) ind; | |
| 4599 | ||
| c79d6685 AM |
4600 | edir->is_func |= eind->is_func; |
| 4601 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
| 4602 | edir->tls_mask |= eind->tls_mask; | |
| 4603 | if (eind->oh != NULL) | |
| 4604 | edir->oh = ppc_follow_link (eind->oh); | |
| 4605 | ||
| 4606 | /* If called to transfer flags for a weakdef during processing | |
| 4607 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
| 4608 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
| 4609 | if (!(ELIMINATE_COPY_RELOCS | |
| 4610 | && eind->elf.root.type != bfd_link_hash_indirect | |
| 4611 | && edir->elf.dynamic_adjusted)) | |
| 4612 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
| 4613 | ||
| 4614 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
| 4615 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
| 4616 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
| 4617 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
| 4618 | ||
| 411e1bfb | 4619 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
| bbd7ec4a | 4620 | if (eind->dyn_relocs != NULL) |
| 65f38f15 | 4621 | { |
| bbd7ec4a AM |
4622 | if (edir->dyn_relocs != NULL) |
| 4623 | { | |
| 6061a67d AM |
4624 | struct elf_dyn_relocs **pp; |
| 4625 | struct elf_dyn_relocs *p; | |
| bbd7ec4a | 4626 | |
| fcfa13d2 | 4627 | /* Add reloc counts against the indirect sym to the direct sym |
| bbd7ec4a AM |
4628 | list. Merge any entries against the same section. */ |
| 4629 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
| 4630 | { | |
| 6061a67d | 4631 | struct elf_dyn_relocs *q; |
| bbd7ec4a AM |
4632 | |
| 4633 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
| 4634 | if (q->sec == p->sec) | |
| 4635 | { | |
| 4636 | q->pc_count += p->pc_count; | |
| 4637 | q->count += p->count; | |
| 4638 | *pp = p->next; | |
| 4639 | break; | |
| 4640 | } | |
| 4641 | if (q == NULL) | |
| 4642 | pp = &p->next; | |
| 4643 | } | |
| 4644 | *pp = edir->dyn_relocs; | |
| 4645 | } | |
| 4646 | ||
| 65f38f15 AM |
4647 | edir->dyn_relocs = eind->dyn_relocs; |
| 4648 | eind->dyn_relocs = NULL; | |
| 4649 | } | |
| 65f38f15 | 4650 | |
| 68ba6d40 AM |
4651 | /* If we were called to copy over info for a weak sym, that's all. |
| 4652 | You might think dyn_relocs need not be copied over; After all, | |
| 4653 | both syms will be dynamic or both non-dynamic so we're just | |
| 68ffbac6 | 4654 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
| 68ba6d40 AM |
4655 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
| 4656 | dyn_relocs in read-only sections, and it does so on what is the | |
| 4657 | DIR sym here. */ | |
| 4658 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
| 4659 | return; | |
| 4660 | ||
| 81848ca0 AM |
4661 | /* Copy over got entries that we may have already seen to the |
| 4662 | symbol which just became indirect. */ | |
| 411e1bfb AM |
4663 | if (eind->elf.got.glist != NULL) |
| 4664 | { | |
| 4665 | if (edir->elf.got.glist != NULL) | |
| 4666 | { | |
| 4667 | struct got_entry **entp; | |
| 4668 | struct got_entry *ent; | |
| 4669 | ||
| 4670 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
| 4671 | { | |
| 4672 | struct got_entry *dent; | |
| 4673 | ||
| 4674 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
| 4675 | if (dent->addend == ent->addend | |
| e717da7e | 4676 | && dent->owner == ent->owner |
| 411e1bfb AM |
4677 | && dent->tls_type == ent->tls_type) |
| 4678 | { | |
| 4679 | dent->got.refcount += ent->got.refcount; | |
| 4680 | *entp = ent->next; | |
| 4681 | break; | |
| 4682 | } | |
| 4683 | if (dent == NULL) | |
| 4684 | entp = &ent->next; | |
| 4685 | } | |
| 4686 | *entp = edir->elf.got.glist; | |
| 4687 | } | |
| 4688 | ||
| 4689 | edir->elf.got.glist = eind->elf.got.glist; | |
| 4690 | eind->elf.got.glist = NULL; | |
| 4691 | } | |
| 4692 | ||
| 4693 | /* And plt entries. */ | |
| 40d16e0b | 4694 | move_plt_plist (eind, edir); |
| 411e1bfb | 4695 | |
| fcfa13d2 | 4696 | if (eind->elf.dynindx != -1) |
| 411e1bfb | 4697 | { |
| fcfa13d2 AM |
4698 | if (edir->elf.dynindx != -1) |
| 4699 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 4700 | edir->elf.dynstr_index); | |
| 411e1bfb AM |
4701 | edir->elf.dynindx = eind->elf.dynindx; |
| 4702 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
| 4703 | eind->elf.dynindx = -1; | |
| 4704 | eind->elf.dynstr_index = 0; | |
| 4705 | } | |
| 411e1bfb AM |
4706 | } |
| 4707 | ||
| 8387904d AM |
4708 | /* Find the function descriptor hash entry from the given function code |
| 4709 | hash entry FH. Link the entries via their OH fields. */ | |
| 4710 | ||
| 4711 | static struct ppc_link_hash_entry * | |
| b31867b6 | 4712 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
| 8387904d AM |
4713 | { |
| 4714 | struct ppc_link_hash_entry *fdh = fh->oh; | |
| 4715 | ||
| 4716 | if (fdh == NULL) | |
| 4717 | { | |
| 4718 | const char *fd_name = fh->elf.root.root.string + 1; | |
| 4719 | ||
| 4720 | fdh = (struct ppc_link_hash_entry *) | |
| 4721 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
| b31867b6 AM |
4722 | if (fdh == NULL) |
| 4723 | return fdh; | |
| 4724 | ||
| 4725 | fdh->is_func_descriptor = 1; | |
| 4726 | fdh->oh = fh; | |
| 4727 | fh->is_func = 1; | |
| 4728 | fh->oh = fdh; | |
| 8387904d AM |
4729 | } |
| 4730 | ||
| b31867b6 | 4731 | return ppc_follow_link (fdh); |
| 8387904d AM |
4732 | } |
| 4733 | ||
| bb700d78 AM |
4734 | /* Make a fake function descriptor sym for the code sym FH. */ |
| 4735 | ||
| 4736 | static struct ppc_link_hash_entry * | |
| 4737 | make_fdh (struct bfd_link_info *info, | |
| 908b32fc | 4738 | struct ppc_link_hash_entry *fh) |
| bb700d78 AM |
4739 | { |
| 4740 | bfd *abfd; | |
| 4741 | asymbol *newsym; | |
| 4742 | struct bfd_link_hash_entry *bh; | |
| 4743 | struct ppc_link_hash_entry *fdh; | |
| 4744 | ||
| 4745 | abfd = fh->elf.root.u.undef.abfd; | |
| 4746 | newsym = bfd_make_empty_symbol (abfd); | |
| 4747 | newsym->name = fh->elf.root.root.string + 1; | |
| 4748 | newsym->section = bfd_und_section_ptr; | |
| 4749 | newsym->value = 0; | |
| 908b32fc | 4750 | newsym->flags = BSF_WEAK; |
| bb700d78 AM |
4751 | |
| 4752 | bh = NULL; | |
| 4753 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
| 4754 | newsym->flags, newsym->section, | |
| 4755 | newsym->value, NULL, FALSE, FALSE, | |
| 4756 | &bh)) | |
| 4757 | return NULL; | |
| 4758 | ||
| 4759 | fdh = (struct ppc_link_hash_entry *) bh; | |
| 4760 | fdh->elf.non_elf = 0; | |
| 908b32fc AM |
4761 | fdh->fake = 1; |
| 4762 | fdh->is_func_descriptor = 1; | |
| 4763 | fdh->oh = fh; | |
| 4764 | fh->is_func = 1; | |
| 4765 | fh->oh = fdh; | |
| bb700d78 AM |
4766 | return fdh; |
| 4767 | } | |
| 4768 | ||
| 8387904d AM |
4769 | /* Fix function descriptor symbols defined in .opd sections to be |
| 4770 | function type. */ | |
| 555cd476 AM |
4771 | |
| 4772 | static bfd_boolean | |
| c16153ae | 4773 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
| e054468f | 4774 | struct bfd_link_info *info, |
| 555cd476 | 4775 | Elf_Internal_Sym *isym, |
| 6911b7dc | 4776 | const char **name, |
| 555cd476 AM |
4777 | flagword *flags ATTRIBUTE_UNUSED, |
| 4778 | asection **sec, | |
| 4779 | bfd_vma *value ATTRIBUTE_UNUSED) | |
| 4780 | { | |
| f64b2e8d NC |
4781 | if ((ibfd->flags & DYNAMIC) == 0 |
| 4782 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
| 4783 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
| 4784 | ||
| e054468f | 4785 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
| c16153ae L |
4786 | { |
| 4787 | if ((ibfd->flags & DYNAMIC) == 0) | |
| f64b2e8d | 4788 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
| c16153ae | 4789 | } |
| e054468f AM |
4790 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
| 4791 | ; | |
| 4792 | else if (*sec != NULL | |
| 70cc837d | 4793 | && strcmp ((*sec)->name, ".opd") == 0) |
| 555cd476 | 4794 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
| 433817dd | 4795 | |
| 6911b7dc AM |
4796 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
| 4797 | { | |
| 4798 | if (abiversion (ibfd) == 0) | |
| 4799 | set_abiversion (ibfd, 2); | |
| 4800 | else if (abiversion (ibfd) == 1) | |
| 4801 | { | |
| 4802 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
| 4803 | " for ABI version 1\n"), name); | |
| 4804 | bfd_set_error (bfd_error_bad_value); | |
| 4805 | return FALSE; | |
| 4806 | } | |
| 4807 | } | |
| 4808 | ||
| 555cd476 AM |
4809 | return TRUE; |
| 4810 | } | |
| 4811 | ||
| 6911b7dc AM |
4812 | /* Merge non-visibility st_other attributes: local entry point. */ |
| 4813 | ||
| 4814 | static void | |
| 4815 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
| 4816 | const Elf_Internal_Sym *isym, | |
| 4817 | bfd_boolean definition, | |
| 4818 | bfd_boolean dynamic) | |
| 4819 | { | |
| 4820 | if (definition && !dynamic) | |
| 4821 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
| 4822 | | ELF_ST_VISIBILITY (h->other)); | |
| 4823 | } | |
| 4824 | ||
| 8387904d | 4825 | /* This function makes an old ABI object reference to ".bar" cause the |
| 908b32fc AM |
4826 | inclusion of a new ABI object archive that defines "bar". |
| 4827 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
| 4828 | table that might be satisfied by the archive symbols. */ | |
| 8387904d AM |
4829 | |
| 4830 | static struct elf_link_hash_entry * | |
| 4831 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
| 4832 | struct bfd_link_info *info, | |
| 4833 | const char *name) | |
| 4834 | { | |
| 4835 | struct elf_link_hash_entry *h; | |
| 4836 | char *dot_name; | |
| 4837 | size_t len; | |
| 4838 | ||
| 4839 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
| 908b32fc AM |
4840 | if (h != NULL |
| 4841 | /* Don't return this sym if it is a fake function descriptor | |
| 4842 | created by add_symbol_adjust. */ | |
| 4843 | && !(h->root.type == bfd_link_hash_undefweak | |
| 4844 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
| 8387904d AM |
4845 | return h; |
| 4846 | ||
| 4847 | if (name[0] == '.') | |
| 4848 | return h; | |
| 4849 | ||
| 4850 | len = strlen (name); | |
| 4851 | dot_name = bfd_alloc (abfd, len + 2); | |
| 4852 | if (dot_name == NULL) | |
| 4853 | return (struct elf_link_hash_entry *) 0 - 1; | |
| 4854 | dot_name[0] = '.'; | |
| 4855 | memcpy (dot_name + 1, name, len + 1); | |
| 4856 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
| 4857 | bfd_release (abfd, dot_name); | |
| 4858 | return h; | |
| 4859 | } | |
| 4860 | ||
| 4861 | /* This function satisfies all old ABI object references to ".bar" if a | |
| 99877b66 AM |
4862 | new ABI object defines "bar". Well, at least, undefined dot symbols |
| 4863 | are made weak. This stops later archive searches from including an | |
| 4864 | object if we already have a function descriptor definition. It also | |
| 35b0ce59 AM |
4865 | prevents the linker complaining about undefined symbols. |
| 4866 | We also check and correct mismatched symbol visibility here. The | |
| 4867 | most restrictive visibility of the function descriptor and the | |
| 4868 | function entry symbol is used. */ | |
| 8387904d AM |
4869 | |
| 4870 | static bfd_boolean | |
| b3fac117 | 4871 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
| 8387904d | 4872 | { |
| 8387904d AM |
4873 | struct ppc_link_hash_table *htab; |
| 4874 | struct ppc_link_hash_entry *fdh; | |
| 4875 | ||
| b3fac117 | 4876 | if (eh->elf.root.type == bfd_link_hash_indirect) |
| 8387904d AM |
4877 | return TRUE; |
| 4878 | ||
| b3fac117 AM |
4879 | if (eh->elf.root.type == bfd_link_hash_warning) |
| 4880 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 8387904d | 4881 | |
| b3fac117 AM |
4882 | if (eh->elf.root.root.string[0] != '.') |
| 4883 | abort (); | |
| 8387904d | 4884 | |
| b3fac117 | 4885 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
4886 | if (htab == NULL) |
| 4887 | return FALSE; | |
| 4888 | ||
| b31867b6 AM |
4889 | fdh = lookup_fdh (eh, htab); |
| 4890 | if (fdh == NULL) | |
| 4891 | { | |
| 4892 | if (!info->relocatable | |
| 4893 | && (eh->elf.root.type == bfd_link_hash_undefined | |
| 4894 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
| 4895 | && eh->elf.ref_regular) | |
| 4896 | { | |
| 4897 | /* Make an undefweak function descriptor sym, which is enough to | |
| 4898 | pull in an --as-needed shared lib, but won't cause link | |
| 4899 | errors. Archives are handled elsewhere. */ | |
| 4900 | fdh = make_fdh (info, eh); | |
| 4901 | if (fdh == NULL) | |
| 4902 | return FALSE; | |
| 4903 | fdh->elf.ref_regular = 1; | |
| 4904 | } | |
| bb700d78 | 4905 | } |
| b31867b6 | 4906 | else |
| 8387904d | 4907 | { |
| 35b0ce59 AM |
4908 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
| 4909 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
| 4910 | if (entry_vis < descr_vis) | |
| 4911 | fdh->elf.other += entry_vis - descr_vis; | |
| 4912 | else if (entry_vis > descr_vis) | |
| 4913 | eh->elf.other += descr_vis - entry_vis; | |
| 4914 | ||
| e87d886e AM |
4915 | if ((fdh->elf.root.type == bfd_link_hash_defined |
| 4916 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 4917 | && eh->elf.root.type == bfd_link_hash_undefined) | |
| 35b0ce59 AM |
4918 | { |
| 4919 | eh->elf.root.type = bfd_link_hash_undefweak; | |
| 4920 | eh->was_undefined = 1; | |
| 4921 | htab->twiddled_syms = 1; | |
| 4922 | } | |
| 8387904d | 4923 | } |
| 99877b66 | 4924 | |
| 8387904d AM |
4925 | return TRUE; |
| 4926 | } | |
| 4927 | ||
| b3fac117 AM |
4928 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
| 4929 | ||
| 8387904d | 4930 | static bfd_boolean |
| 7d9616d7 | 4931 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
| 8387904d | 4932 | { |
| 99877b66 | 4933 | struct ppc_link_hash_table *htab; |
| b3fac117 | 4934 | struct ppc_link_hash_entry **p, *eh; |
| 433817dd | 4935 | |
| 0c8d6e5c | 4936 | if (!is_ppc64_elf (info->output_bfd)) |
| 35b0ce59 | 4937 | return TRUE; |
| 4dfe6ac6 NC |
4938 | htab = ppc_hash_table (info); |
| 4939 | if (htab == NULL) | |
| 4940 | return FALSE; | |
| 35b0ce59 | 4941 | |
| 0c8d6e5c | 4942 | if (is_ppc64_elf (ibfd)) |
| b3fac117 AM |
4943 | { |
| 4944 | p = &htab->dot_syms; | |
| 4945 | while ((eh = *p) != NULL) | |
| 4946 | { | |
| 4947 | *p = NULL; | |
| 1c865ab2 AM |
4948 | if (&eh->elf == htab->elf.hgot) |
| 4949 | ; | |
| 4950 | else if (htab->elf.hgot == NULL | |
| 4951 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
| 4952 | htab->elf.hgot = &eh->elf; | |
| 4953 | else if (!add_symbol_adjust (eh, info)) | |
| b3fac117 AM |
4954 | return FALSE; |
| 4955 | p = &eh->u.next_dot_sym; | |
| 4956 | } | |
| 4957 | } | |
| 4958 | ||
| 4959 | /* Clear the list for non-ppc64 input files. */ | |
| 4960 | p = &htab->dot_syms; | |
| 4961 | while ((eh = *p) != NULL) | |
| 4962 | { | |
| 4963 | *p = NULL; | |
| 4964 | p = &eh->u.next_dot_sym; | |
| 4965 | } | |
| 99877b66 AM |
4966 | |
| 4967 | /* We need to fix the undefs list for any syms we have twiddled to | |
| 4968 | undef_weak. */ | |
| 4969 | if (htab->twiddled_syms) | |
| 4970 | { | |
| 77cfaee6 | 4971 | bfd_link_repair_undef_list (&htab->elf.root); |
| 99877b66 AM |
4972 | htab->twiddled_syms = 0; |
| 4973 | } | |
| b3fac117 | 4974 | return TRUE; |
| 8387904d AM |
4975 | } |
| 4976 | ||
| 97fed1c9 JJ |
4977 | /* Undo hash table changes when an --as-needed input file is determined |
| 4978 | not to be needed. */ | |
| 4979 | ||
| 4980 | static bfd_boolean | |
| e5034e59 AM |
4981 | ppc64_elf_notice_as_needed (bfd *ibfd, |
| 4982 | struct bfd_link_info *info, | |
| 4983 | enum notice_asneeded_action act) | |
| 97fed1c9 | 4984 | { |
| e5034e59 AM |
4985 | if (act == notice_not_needed) |
| 4986 | { | |
| 4987 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 | 4988 | |
| e5034e59 AM |
4989 | if (htab == NULL) |
| 4990 | return FALSE; | |
| 4dfe6ac6 | 4991 | |
| e5034e59 AM |
4992 | htab->dot_syms = NULL; |
| 4993 | } | |
| 4994 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
| 97fed1c9 JJ |
4995 | } |
| 4996 | ||
| aa374f67 AM |
4997 | /* If --just-symbols against a final linked binary, then assume we need |
| 4998 | toc adjusting stubs when calling functions defined there. */ | |
| 4999 | ||
| 5000 | static void | |
| 5001 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
| 5002 | { | |
| 5003 | if ((sec->flags & SEC_CODE) != 0 | |
| 5004 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
| 5005 | && is_ppc64_elf (sec->owner)) | |
| 5006 | { | |
| 5007 | asection *got = bfd_get_section_by_name (sec->owner, ".got"); | |
| 5008 | if (got != NULL | |
| 5009 | && got->size >= elf_backend_got_header_size | |
| 5010 | && bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
| 5011 | sec->has_toc_reloc = 1; | |
| 5012 | } | |
| 5013 | _bfd_elf_link_just_syms (sec, info); | |
| 5014 | } | |
| 5015 | ||
| e054468f | 5016 | static struct plt_entry ** |
| 4ce794b7 AM |
5017 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
| 5018 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
| 411e1bfb AM |
5019 | { |
| 5020 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
| e054468f | 5021 | struct plt_entry **local_plt; |
| f961d9dd | 5022 | unsigned char *local_got_tls_masks; |
| 411e1bfb AM |
5023 | |
| 5024 | if (local_got_ents == NULL) | |
| 5025 | { | |
| 5026 | bfd_size_type size = symtab_hdr->sh_info; | |
| 5027 | ||
| e054468f AM |
5028 | size *= (sizeof (*local_got_ents) |
| 5029 | + sizeof (*local_plt) | |
| 5030 | + sizeof (*local_got_tls_masks)); | |
| 4ce794b7 | 5031 | local_got_ents = bfd_zalloc (abfd, size); |
| 411e1bfb | 5032 | if (local_got_ents == NULL) |
| e054468f | 5033 | return NULL; |
| 411e1bfb AM |
5034 | elf_local_got_ents (abfd) = local_got_ents; |
| 5035 | } | |
| 5036 | ||
| e054468f | 5037 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
| 411e1bfb AM |
5038 | { |
| 5039 | struct got_entry *ent; | |
| 5040 | ||
| 5041 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
| e717da7e AM |
5042 | if (ent->addend == r_addend |
| 5043 | && ent->owner == abfd | |
| 5044 | && ent->tls_type == tls_type) | |
| 411e1bfb AM |
5045 | break; |
| 5046 | if (ent == NULL) | |
| 5047 | { | |
| 5048 | bfd_size_type amt = sizeof (*ent); | |
| 4ce794b7 | 5049 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5050 | if (ent == NULL) |
| 5051 | return FALSE; | |
| 5052 | ent->next = local_got_ents[r_symndx]; | |
| 5053 | ent->addend = r_addend; | |
| e717da7e | 5054 | ent->owner = abfd; |
| 411e1bfb | 5055 | ent->tls_type = tls_type; |
| 927be08e | 5056 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5057 | ent->got.refcount = 0; |
| 5058 | local_got_ents[r_symndx] = ent; | |
| 5059 | } | |
| 5060 | ent->got.refcount += 1; | |
| 5061 | } | |
| 5062 | ||
| e054468f | 5063 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
| f961d9dd | 5064 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 5065 | local_got_tls_masks[r_symndx] |= tls_type; |
| e054468f AM |
5066 | |
| 5067 | return local_plt + r_symndx; | |
| 65f38f15 AM |
5068 | } |
| 5069 | ||
| 411e1bfb | 5070 | static bfd_boolean |
| e054468f | 5071 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
| 1e2f5b6e | 5072 | { |
| 411e1bfb | 5073 | struct plt_entry *ent; |
| 1e2f5b6e | 5074 | |
| e054468f | 5075 | for (ent = *plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
5076 | if (ent->addend == addend) |
| 5077 | break; | |
| 5078 | if (ent == NULL) | |
| 1e2f5b6e | 5079 | { |
| 411e1bfb | 5080 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5081 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5082 | if (ent == NULL) |
| 5083 | return FALSE; | |
| e054468f | 5084 | ent->next = *plist; |
| 411e1bfb AM |
5085 | ent->addend = addend; |
| 5086 | ent->plt.refcount = 0; | |
| e054468f | 5087 | *plist = ent; |
| 1e2f5b6e | 5088 | } |
| 411e1bfb | 5089 | ent->plt.refcount += 1; |
| b34976b6 | 5090 | return TRUE; |
| 1e2f5b6e AM |
5091 | } |
| 5092 | ||
| e054468f AM |
5093 | static bfd_boolean |
| 5094 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
| 5095 | { | |
| 5096 | return (r_type == R_PPC64_REL24 | |
| 5097 | || r_type == R_PPC64_REL14 | |
| 5098 | || r_type == R_PPC64_REL14_BRTAKEN | |
| 5099 | || r_type == R_PPC64_REL14_BRNTAKEN | |
| 5100 | || r_type == R_PPC64_ADDR24 | |
| 5101 | || r_type == R_PPC64_ADDR14 | |
| 5102 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
| 5103 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
| 5104 | } | |
| 5105 | ||
| 5bd4f169 | 5106 | /* Look through the relocs for a section during the first phase, and |
| 65f38f15 | 5107 | calculate needed space in the global offset table, procedure |
| 5d1634d7 | 5108 | linkage table, and dynamic reloc sections. */ |
| 5bd4f169 | 5109 | |
| b34976b6 | 5110 | static bfd_boolean |
| 4ce794b7 AM |
5111 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 5112 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 5113 | { |
| 65f38f15 | 5114 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 5115 | Elf_Internal_Shdr *symtab_hdr; |
| c7e2358a | 5116 | struct elf_link_hash_entry **sym_hashes; |
| 5bd4f169 AM |
5117 | const Elf_Internal_Rela *rel; |
| 5118 | const Elf_Internal_Rela *rel_end; | |
| 5bd4f169 | 5119 | asection *sreloc; |
| 1e2f5b6e | 5120 | asection **opd_sym_map; |
| 3a71aa26 | 5121 | struct elf_link_hash_entry *tga, *dottga; |
| 5bd4f169 | 5122 | |
| 1049f94e | 5123 | if (info->relocatable) |
| b34976b6 | 5124 | return TRUE; |
| 5bd4f169 | 5125 | |
| 680a3378 AM |
5126 | /* Don't do anything special with non-loaded, non-alloced sections. |
| 5127 | In particular, any relocs in such sections should not affect GOT | |
| 5128 | and PLT reference counting (ie. we don't allow them to create GOT | |
| 5129 | or PLT entries), there's no possibility or desire to optimize TLS | |
| 5130 | relocs, and there's not much point in propagating relocs to shared | |
| 5131 | libs that the dynamic linker won't relocate. */ | |
| 5132 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 5133 | return TRUE; | |
| 5134 | ||
| 0c8d6e5c | 5135 | BFD_ASSERT (is_ppc64_elf (abfd)); |
| 0ffa91dd | 5136 | |
| 65f38f15 | 5137 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
5138 | if (htab == NULL) |
| 5139 | return FALSE; | |
| 5140 | ||
| 3a71aa26 AM |
5141 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
| 5142 | FALSE, FALSE, TRUE); | |
| 5143 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 5144 | FALSE, FALSE, TRUE); | |
| 0ffa91dd | 5145 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 5146 | sym_hashes = elf_sym_hashes (abfd); |
| 5bd4f169 | 5147 | sreloc = NULL; |
| 1e2f5b6e | 5148 | opd_sym_map = NULL; |
| 70cc837d | 5149 | if (strcmp (sec->name, ".opd") == 0) |
| 1e2f5b6e AM |
5150 | { |
| 5151 | /* Garbage collection needs some extra help with .opd sections. | |
| 5152 | We don't want to necessarily keep everything referenced by | |
| 5153 | relocs in .opd, as that would keep all functions. Instead, | |
| 5154 | if we reference an .opd symbol (a function descriptor), we | |
| 5155 | want to keep the function code symbol's section. This is | |
| 5156 | easy for global symbols, but for local syms we need to keep | |
| 74f0fb50 | 5157 | information about the associated function section. */ |
| 1e2f5b6e AM |
5158 | bfd_size_type amt; |
| 5159 | ||
| ee67d69a AM |
5160 | if (abiversion (abfd) == 0) |
| 5161 | set_abiversion (abfd, 1); | |
| 5162 | else if (abiversion (abfd) == 2) | |
| 5163 | { | |
| 5164 | info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"), | |
| 5165 | abiversion (abfd)); | |
| 5166 | bfd_set_error (bfd_error_bad_value); | |
| 5167 | return FALSE; | |
| 5168 | } | |
| 74f0fb50 | 5169 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
| 4ce794b7 | 5170 | opd_sym_map = bfd_zalloc (abfd, amt); |
| 1e2f5b6e | 5171 | if (opd_sym_map == NULL) |
| b34976b6 | 5172 | return FALSE; |
| 74f0fb50 | 5173 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
| 7c8fe5c4 AM |
5174 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
| 5175 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e | 5176 | } |
| 5bd4f169 AM |
5177 | |
| 5178 | rel_end = relocs + sec->reloc_count; | |
| 5179 | for (rel = relocs; rel < rel_end; rel++) | |
| 5180 | { | |
| 5181 | unsigned long r_symndx; | |
| 5182 | struct elf_link_hash_entry *h; | |
| 04c9666a | 5183 | enum elf_ppc64_reloc_type r_type; |
| 727fc41e | 5184 | int tls_type; |
| 7c8fe5c4 | 5185 | struct _ppc64_elf_section_data *ppc64_sec; |
| e054468f | 5186 | struct plt_entry **ifunc; |
| 5bd4f169 AM |
5187 | |
| 5188 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 5189 | if (r_symndx < symtab_hdr->sh_info) | |
| 5190 | h = NULL; | |
| 5191 | else | |
| 973a3492 L |
5192 | { |
| 5193 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 5194 | h = elf_follow_link (h); |
| 81fbe831 AM |
5195 | |
| 5196 | /* PR15323, ref flags aren't set for references in the same | |
| 5197 | object. */ | |
| 5198 | h->root.non_ir_ref = 1; | |
| 1c865ab2 AM |
5199 | |
| 5200 | if (h == htab->elf.hgot) | |
| 5201 | sec->has_toc_reloc = 1; | |
| 973a3492 | 5202 | } |
| 5bd4f169 | 5203 | |
| 727fc41e | 5204 | tls_type = 0; |
| e054468f | 5205 | ifunc = NULL; |
| 25f23106 AM |
5206 | if (h != NULL) |
| 5207 | { | |
| 5208 | if (h->type == STT_GNU_IFUNC) | |
| 5209 | { | |
| 5210 | h->needs_plt = 1; | |
| 5211 | ifunc = &h->plt.plist; | |
| 5212 | } | |
| 5213 | } | |
| 5214 | else | |
| 5215 | { | |
| 5216 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5217 | abfd, r_symndx); | |
| 5218 | if (isym == NULL) | |
| 5219 | return FALSE; | |
| 5220 | ||
| 5221 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
| 5222 | { | |
| 5223 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5224 | rel->r_addend, PLT_IFUNC); | |
| 5225 | if (ifunc == NULL) | |
| 5226 | return FALSE; | |
| 5227 | } | |
| 5228 | } | |
| 4ce794b7 | 5229 | r_type = ELF64_R_TYPE (rel->r_info); |
| e054468f AM |
5230 | if (is_branch_reloc (r_type)) |
| 5231 | { | |
| 5232 | if (h != NULL && (h == tga || h == dottga)) | |
| 5233 | { | |
| 5234 | if (rel != relocs | |
| 5235 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
| 5236 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
| 5237 | /* We have a new-style __tls_get_addr call with a marker | |
| 5238 | reloc. */ | |
| 5239 | ; | |
| 5240 | else | |
| 5241 | /* Mark this section as having an old-style call. */ | |
| 5242 | sec->has_tls_get_addr_call = 1; | |
| 5243 | } | |
| 727fc41e | 5244 | |
| e054468f | 5245 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
| e054468f AM |
5246 | if (ifunc != NULL |
| 5247 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
| 5248 | return FALSE; | |
| 5249 | } | |
| 727fc41e | 5250 | |
| a33d1f77 | 5251 | switch (r_type) |
| 5bd4f169 | 5252 | { |
| 727fc41e AM |
5253 | case R_PPC64_TLSGD: |
| 5254 | case R_PPC64_TLSLD: | |
| 5255 | /* These special tls relocs tie a call to __tls_get_addr with | |
| 5256 | its parameter symbol. */ | |
| 5257 | break; | |
| 5258 | ||
| 411e1bfb AM |
5259 | case R_PPC64_GOT_TLSLD16: |
| 5260 | case R_PPC64_GOT_TLSLD16_LO: | |
| 5261 | case R_PPC64_GOT_TLSLD16_HI: | |
| 5262 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 5263 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5264 | goto dogottls; |
| 5265 | ||
| 5266 | case R_PPC64_GOT_TLSGD16: | |
| 5267 | case R_PPC64_GOT_TLSGD16_LO: | |
| 5268 | case R_PPC64_GOT_TLSGD16_HI: | |
| 5269 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 5270 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
5271 | goto dogottls; |
| 5272 | ||
| 5273 | case R_PPC64_GOT_TPREL16_DS: | |
| 5274 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 5275 | case R_PPC64_GOT_TPREL16_HI: | |
| 5276 | case R_PPC64_GOT_TPREL16_HA: | |
| 1d483afe | 5277 | if (!info->executable) |
| 411e1bfb AM |
5278 | info->flags |= DF_STATIC_TLS; |
| 5279 | tls_type = TLS_TLS | TLS_TPREL; | |
| 5280 | goto dogottls; | |
| 5281 | ||
| 5282 | case R_PPC64_GOT_DTPREL16_DS: | |
| 5283 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 5284 | case R_PPC64_GOT_DTPREL16_HI: | |
| 5285 | case R_PPC64_GOT_DTPREL16_HA: | |
| 5286 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 5287 | dogottls: | |
| 5288 | sec->has_tls_reloc = 1; | |
| 5289 | /* Fall thru */ | |
| 5290 | ||
| 5bd4f169 | 5291 | case R_PPC64_GOT16: |
| 5bd4f169 | 5292 | case R_PPC64_GOT16_DS: |
| 65f38f15 AM |
5293 | case R_PPC64_GOT16_HA: |
| 5294 | case R_PPC64_GOT16_HI: | |
| 5295 | case R_PPC64_GOT16_LO: | |
| 5bd4f169 | 5296 | case R_PPC64_GOT16_LO_DS: |
| 65f38f15 | 5297 | /* This symbol requires a global offset table entry. */ |
| 4c52953f | 5298 | sec->has_toc_reloc = 1; |
| 33c0ec9d AM |
5299 | if (r_type == R_PPC64_GOT_TLSLD16 |
| 5300 | || r_type == R_PPC64_GOT_TLSGD16 | |
| 5301 | || r_type == R_PPC64_GOT_TPREL16_DS | |
| 5302 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
| 5303 | || r_type == R_PPC64_GOT16 | |
| 5304 | || r_type == R_PPC64_GOT16_DS) | |
| 5305 | { | |
| 5306 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5307 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| 33c0ec9d AM |
5308 | } |
| 5309 | ||
| e717da7e AM |
5310 | if (ppc64_elf_tdata (abfd)->got == NULL |
| 5311 | && !create_got_section (abfd, info)) | |
| b34976b6 | 5312 | return FALSE; |
| 5bd4f169 AM |
5313 | |
| 5314 | if (h != NULL) | |
| 5315 | { | |
| 411e1bfb AM |
5316 | struct ppc_link_hash_entry *eh; |
| 5317 | struct got_entry *ent; | |
| 65f38f15 | 5318 | |
| 411e1bfb AM |
5319 | eh = (struct ppc_link_hash_entry *) h; |
| 5320 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
| 5321 | if (ent->addend == rel->r_addend | |
| e717da7e | 5322 | && ent->owner == abfd |
| 411e1bfb AM |
5323 | && ent->tls_type == tls_type) |
| 5324 | break; | |
| 5325 | if (ent == NULL) | |
| 5bd4f169 | 5326 | { |
| 411e1bfb | 5327 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5328 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb | 5329 | if (ent == NULL) |
| b34976b6 | 5330 | return FALSE; |
| 411e1bfb AM |
5331 | ent->next = eh->elf.got.glist; |
| 5332 | ent->addend = rel->r_addend; | |
| e717da7e | 5333 | ent->owner = abfd; |
| 411e1bfb | 5334 | ent->tls_type = tls_type; |
| 927be08e | 5335 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5336 | ent->got.refcount = 0; |
| 5337 | eh->elf.got.glist = ent; | |
| 5bd4f169 | 5338 | } |
| 411e1bfb | 5339 | ent->got.refcount += 1; |
| e7b938ca | 5340 | eh->tls_mask |= tls_type; |
| 5bd4f169 | 5341 | } |
| 411e1bfb AM |
5342 | else |
| 5343 | /* This is a global offset table entry for a local symbol. */ | |
| 5344 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5345 | rel->r_addend, tls_type)) | |
| 5346 | return FALSE; | |
| 5bd4f169 AM |
5347 | break; |
| 5348 | ||
| 5bd4f169 | 5349 | case R_PPC64_PLT16_HA: |
| 65f38f15 AM |
5350 | case R_PPC64_PLT16_HI: |
| 5351 | case R_PPC64_PLT16_LO: | |
| 5352 | case R_PPC64_PLT32: | |
| 5353 | case R_PPC64_PLT64: | |
| 5bd4f169 | 5354 | /* This symbol requires a procedure linkage table entry. We |
| 3fad3c7c AM |
5355 | actually build the entry in adjust_dynamic_symbol, |
| 5356 | because this might be a case of linking PIC code without | |
| 5357 | linking in any dynamic objects, in which case we don't | |
| 5358 | need to generate a procedure linkage table after all. */ | |
| 5bd4f169 AM |
5359 | if (h == NULL) |
| 5360 | { | |
| 5361 | /* It does not make sense to have a procedure linkage | |
| 3fad3c7c | 5362 | table entry for a local symbol. */ |
| 5bd4f169 | 5363 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 5364 | return FALSE; |
| 5bd4f169 | 5365 | } |
| 411e1bfb | 5366 | else |
| e054468f AM |
5367 | { |
| 5368 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5369 | return FALSE; | |
| 5370 | h->needs_plt = 1; | |
| 5371 | if (h->root.root.string[0] == '.' | |
| 5372 | && h->root.root.string[1] != '\0') | |
| 5373 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5374 | } | |
| 5bd4f169 AM |
5375 | break; |
| 5376 | ||
| 5377 | /* The following relocations don't need to propagate the | |
| 5378 | relocation if linking a shared object since they are | |
| 5379 | section relative. */ | |
| 5380 | case R_PPC64_SECTOFF: | |
| 5381 | case R_PPC64_SECTOFF_LO: | |
| 5382 | case R_PPC64_SECTOFF_HI: | |
| 5383 | case R_PPC64_SECTOFF_HA: | |
| 5384 | case R_PPC64_SECTOFF_DS: | |
| 5385 | case R_PPC64_SECTOFF_LO_DS: | |
| 411e1bfb AM |
5386 | case R_PPC64_DTPREL16: |
| 5387 | case R_PPC64_DTPREL16_LO: | |
| 5388 | case R_PPC64_DTPREL16_HI: | |
| 5389 | case R_PPC64_DTPREL16_HA: | |
| 5390 | case R_PPC64_DTPREL16_DS: | |
| 5391 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
5392 | case R_PPC64_DTPREL16_HIGH: |
| 5393 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
5394 | case R_PPC64_DTPREL16_HIGHER: |
| 5395 | case R_PPC64_DTPREL16_HIGHERA: | |
| 5396 | case R_PPC64_DTPREL16_HIGHEST: | |
| 5397 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 5bd4f169 AM |
5398 | break; |
| 5399 | ||
| ad8e1ba5 | 5400 | /* Nor do these. */ |
| 25f23106 AM |
5401 | case R_PPC64_REL16: |
| 5402 | case R_PPC64_REL16_LO: | |
| 5403 | case R_PPC64_REL16_HI: | |
| 5404 | case R_PPC64_REL16_HA: | |
| 5405 | break; | |
| 5406 | ||
| ad8e1ba5 | 5407 | case R_PPC64_TOC16: |
| 33c0ec9d AM |
5408 | case R_PPC64_TOC16_DS: |
| 5409 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5410 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| ad8e1ba5 AM |
5411 | case R_PPC64_TOC16_LO: |
| 5412 | case R_PPC64_TOC16_HI: | |
| 5413 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 5414 | case R_PPC64_TOC16_LO_DS: |
| 4c52953f | 5415 | sec->has_toc_reloc = 1; |
| ad8e1ba5 AM |
5416 | break; |
| 5417 | ||
| 5bd4f169 AM |
5418 | /* This relocation describes the C++ object vtable hierarchy. |
| 5419 | Reconstruct it for later use during GC. */ | |
| 5420 | case R_PPC64_GNU_VTINHERIT: | |
| c152c796 | 5421 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| b34976b6 | 5422 | return FALSE; |
| 5bd4f169 AM |
5423 | break; |
| 5424 | ||
| 5425 | /* This relocation describes which C++ vtable entries are actually | |
| 5426 | used. Record for later use during GC. */ | |
| 5427 | case R_PPC64_GNU_VTENTRY: | |
| d17e0c6e JB |
5428 | BFD_ASSERT (h != NULL); |
| 5429 | if (h != NULL | |
| 5430 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
| b34976b6 | 5431 | return FALSE; |
| 5bd4f169 AM |
5432 | break; |
| 5433 | ||
| 721956f4 AM |
5434 | case R_PPC64_REL14: |
| 5435 | case R_PPC64_REL14_BRTAKEN: | |
| 5436 | case R_PPC64_REL14_BRNTAKEN: | |
| 220c76dd AM |
5437 | { |
| 5438 | asection *dest = NULL; | |
| 5439 | ||
| 5440 | /* Heuristic: If jumping outside our section, chances are | |
| 5441 | we are going to need a stub. */ | |
| 5442 | if (h != NULL) | |
| 5443 | { | |
| 5444 | /* If the sym is weak it may be overridden later, so | |
| 5445 | don't assume we know where a weak sym lives. */ | |
| 5446 | if (h->root.type == bfd_link_hash_defined) | |
| 5447 | dest = h->root.u.def.section; | |
| 5448 | } | |
| 5449 | else | |
| 87d72d41 AM |
5450 | { |
| 5451 | Elf_Internal_Sym *isym; | |
| 5452 | ||
| 5453 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5454 | abfd, r_symndx); | |
| 5455 | if (isym == NULL) | |
| 5456 | return FALSE; | |
| 5457 | ||
| 5458 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5459 | } | |
| 5460 | ||
| 220c76dd | 5461 | if (dest != sec) |
| 7c8fe5c4 | 5462 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
| 220c76dd | 5463 | } |
| 721956f4 AM |
5464 | /* Fall through. */ |
| 5465 | ||
| 5d1634d7 | 5466 | case R_PPC64_REL24: |
| e054468f | 5467 | if (h != NULL && ifunc == NULL) |
| 5d1634d7 AM |
5468 | { |
| 5469 | /* We may need a .plt entry if the function this reloc | |
| 5470 | refers to is in a shared lib. */ | |
| e054468f | 5471 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
| 411e1bfb | 5472 | return FALSE; |
| e054468f AM |
5473 | h->needs_plt = 1; |
| 5474 | if (h->root.root.string[0] == '.' | |
| 5475 | && h->root.root.string[1] != '\0') | |
| 5476 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 3a71aa26 | 5477 | if (h == tga || h == dottga) |
| 411e1bfb | 5478 | sec->has_tls_reloc = 1; |
| 411e1bfb AM |
5479 | } |
| 5480 | break; | |
| 5481 | ||
| 5482 | case R_PPC64_TPREL64: | |
| 5483 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
| 1d483afe | 5484 | if (!info->executable) |
| 411e1bfb AM |
5485 | info->flags |= DF_STATIC_TLS; |
| 5486 | goto dotlstoc; | |
| 5487 | ||
| 5488 | case R_PPC64_DTPMOD64: | |
| 5489 | if (rel + 1 < rel_end | |
| 5490 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 5491 | && rel[1].r_offset == rel->r_offset + 8) | |
| 951fd09b | 5492 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
| 411e1bfb | 5493 | else |
| 951fd09b | 5494 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5495 | goto dotlstoc; |
| 5496 | ||
| 5497 | case R_PPC64_DTPREL64: | |
| 5498 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
| 5499 | if (rel != relocs | |
| 5500 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
| 5501 | && rel[-1].r_offset == rel->r_offset - 8) | |
| 5502 | /* This is the second reloc of a dtpmod, dtprel pair. | |
| 5503 | Don't mark with TLS_DTPREL. */ | |
| 5504 | goto dodyn; | |
| 5505 | ||
| 5506 | dotlstoc: | |
| 5507 | sec->has_tls_reloc = 1; | |
| 5508 | if (h != NULL) | |
| 5509 | { | |
| 5510 | struct ppc_link_hash_entry *eh; | |
| 5511 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 5512 | eh->tls_mask |= tls_type; |
| 411e1bfb AM |
5513 | } |
| 5514 | else | |
| 5515 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5516 | rel->r_addend, tls_type)) | |
| 5517 | return FALSE; | |
| 5518 | ||
| 7c8fe5c4 AM |
5519 | ppc64_sec = ppc64_elf_section_data (sec); |
| 5520 | if (ppc64_sec->sec_type != sec_toc) | |
| 411e1bfb | 5521 | { |
| 3a71aa26 AM |
5522 | bfd_size_type amt; |
| 5523 | ||
| e7b938ca | 5524 | /* One extra to simplify get_tls_mask. */ |
| 3a71aa26 AM |
5525 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
| 5526 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
| 5527 | if (ppc64_sec->u.toc.symndx == NULL) | |
| 5528 | return FALSE; | |
| 5529 | amt = sec->size * sizeof (bfd_vma) / 8; | |
| 5530 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
| 5531 | if (ppc64_sec->u.toc.add == NULL) | |
| 411e1bfb | 5532 | return FALSE; |
| 7c8fe5c4 AM |
5533 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
| 5534 | ppc64_sec->sec_type = sec_toc; | |
| 411e1bfb AM |
5535 | } |
| 5536 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
| 3a71aa26 AM |
5537 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
| 5538 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
| 951fd09b AM |
5539 | |
| 5540 | /* Mark the second slot of a GD or LD entry. | |
| 5541 | -1 to indicate GD and -2 to indicate LD. */ | |
| 5542 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
| 3a71aa26 | 5543 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
| 951fd09b | 5544 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
| 3a71aa26 | 5545 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
| 411e1bfb AM |
5546 | goto dodyn; |
| 5547 | ||
| 5548 | case R_PPC64_TPREL16: | |
| 5549 | case R_PPC64_TPREL16_LO: | |
| 5550 | case R_PPC64_TPREL16_HI: | |
| 5551 | case R_PPC64_TPREL16_HA: | |
| 5552 | case R_PPC64_TPREL16_DS: | |
| 5553 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
5554 | case R_PPC64_TPREL16_HIGH: |
| 5555 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
5556 | case R_PPC64_TPREL16_HIGHER: |
| 5557 | case R_PPC64_TPREL16_HIGHERA: | |
| 5558 | case R_PPC64_TPREL16_HIGHEST: | |
| 5559 | case R_PPC64_TPREL16_HIGHESTA: | |
| 5560 | if (info->shared) | |
| 5561 | { | |
| 1d483afe AM |
5562 | if (!info->executable) |
| 5563 | info->flags |= DF_STATIC_TLS; | |
| 411e1bfb | 5564 | goto dodyn; |
| 5d1634d7 AM |
5565 | } |
| 5566 | break; | |
| 5567 | ||
| e86ce104 | 5568 | case R_PPC64_ADDR64: |
| 1e2f5b6e | 5569 | if (opd_sym_map != NULL |
| 1e2f5b6e | 5570 | && rel + 1 < rel_end |
| 4ce794b7 | 5571 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
| 1e2f5b6e | 5572 | { |
| 8387904d AM |
5573 | if (h != NULL) |
| 5574 | { | |
| 5575 | if (h->root.root.string[0] == '.' | |
| 5576 | && h->root.root.string[1] != 0 | |
| b31867b6 | 5577 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
| 8387904d AM |
5578 | ; |
| 5579 | else | |
| 5580 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5581 | } | |
| 5582 | else | |
| 5583 | { | |
| 5584 | asection *s; | |
| 87d72d41 | 5585 | Elf_Internal_Sym *isym; |
| 1e2f5b6e | 5586 | |
| 87d72d41 AM |
5587 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5588 | abfd, r_symndx); | |
| 5589 | if (isym == NULL) | |
| 8387904d | 5590 | return FALSE; |
| 87d72d41 AM |
5591 | |
| 5592 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5593 | if (s != NULL && s != sec) | |
| 3f764659 | 5594 | opd_sym_map[rel->r_offset / 8] = s; |
| 8387904d | 5595 | } |
| 1e2f5b6e | 5596 | } |
| e86ce104 AM |
5597 | /* Fall through. */ |
| 5598 | ||
| 04c9666a | 5599 | case R_PPC64_REL30: |
| 5bd4f169 | 5600 | case R_PPC64_REL32: |
| 04c9666a | 5601 | case R_PPC64_REL64: |
| 65f38f15 AM |
5602 | case R_PPC64_ADDR14: |
| 5603 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 5604 | case R_PPC64_ADDR14_BRTAKEN: | |
| 5605 | case R_PPC64_ADDR16: | |
| 5606 | case R_PPC64_ADDR16_DS: | |
| 5607 | case R_PPC64_ADDR16_HA: | |
| 5608 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
5609 | case R_PPC64_ADDR16_HIGH: |
| 5610 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
5611 | case R_PPC64_ADDR16_HIGHER: |
| 5612 | case R_PPC64_ADDR16_HIGHERA: | |
| 5613 | case R_PPC64_ADDR16_HIGHEST: | |
| 5614 | case R_PPC64_ADDR16_HIGHESTA: | |
| 5615 | case R_PPC64_ADDR16_LO: | |
| 5616 | case R_PPC64_ADDR16_LO_DS: | |
| 5617 | case R_PPC64_ADDR24: | |
| 65f38f15 | 5618 | case R_PPC64_ADDR32: |
| 65f38f15 AM |
5619 | case R_PPC64_UADDR16: |
| 5620 | case R_PPC64_UADDR32: | |
| 5621 | case R_PPC64_UADDR64: | |
| 5bd4f169 | 5622 | case R_PPC64_TOC: |
| 81848ca0 AM |
5623 | if (h != NULL && !info->shared) |
| 5624 | /* We may need a copy reloc. */ | |
| f5385ebf | 5625 | h->non_got_ref = 1; |
| 81848ca0 | 5626 | |
| 41bd81ab | 5627 | /* Don't propagate .opd relocs. */ |
| 1e2f5b6e | 5628 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
| e86ce104 | 5629 | break; |
| e86ce104 | 5630 | |
| 65f38f15 AM |
5631 | /* If we are creating a shared library, and this is a reloc |
| 5632 | against a global symbol, or a non PC relative reloc | |
| 5633 | against a local symbol, then we need to copy the reloc | |
| 5634 | into the shared library. However, if we are linking with | |
| 5635 | -Bsymbolic, we do not need to copy a reloc against a | |
| 5636 | global symbol which is defined in an object we are | |
| 5637 | including in the link (i.e., DEF_REGULAR is set). At | |
| 5638 | this point we have not seen all the input files, so it is | |
| 5639 | possible that DEF_REGULAR is not set now but will be set | |
| 5640 | later (it is never cleared). In case of a weak definition, | |
| 5641 | DEF_REGULAR may be cleared later by a strong definition in | |
| 5642 | a shared library. We account for that possibility below by | |
| f4656909 | 5643 | storing information in the dyn_relocs field of the hash |
| 65f38f15 AM |
5644 | table entry. A similar situation occurs when creating |
| 5645 | shared libraries and symbol visibility changes render the | |
| 5646 | symbol local. | |
| 5647 | ||
| 5648 | If on the other hand, we are creating an executable, we | |
| 5649 | may need to keep relocations for symbols satisfied by a | |
| 5650 | dynamic library if we manage to avoid copy relocs for the | |
| 5651 | symbol. */ | |
| 411e1bfb | 5652 | dodyn: |
| 65f38f15 | 5653 | if ((info->shared |
| 1d483afe | 5654 | && (must_be_dyn_reloc (info, r_type) |
| 65f38f15 | 5655 | || (h != NULL |
| 198f1157 | 5656 | && (!SYMBOLIC_BIND (info, h) |
| 65f38f15 | 5657 | || h->root.type == bfd_link_hash_defweak |
| f5385ebf | 5658 | || !h->def_regular)))) |
| f4656909 AM |
5659 | || (ELIMINATE_COPY_RELOCS |
| 5660 | && !info->shared | |
| 65f38f15 AM |
5661 | && h != NULL |
| 5662 | && (h->root.type == bfd_link_hash_defweak | |
| 25f23106 AM |
5663 | || !h->def_regular)) |
| 5664 | || (!info->shared | |
| 5665 | && ifunc != NULL)) | |
| 5bd4f169 | 5666 | { |
| 65f38f15 AM |
5667 | /* We must copy these reloc types into the output file. |
| 5668 | Create a reloc section in dynobj and make room for | |
| 5669 | this reloc. */ | |
| 5bd4f169 AM |
5670 | if (sreloc == NULL) |
| 5671 | { | |
| 83bac4b0 NC |
5672 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 5673 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
| 65f38f15 | 5674 | |
| 5bd4f169 | 5675 | if (sreloc == NULL) |
| 83bac4b0 | 5676 | return FALSE; |
| 5bd4f169 AM |
5677 | } |
| 5678 | ||
| 65f38f15 AM |
5679 | /* If this is a global symbol, we count the number of |
| 5680 | relocations we need for this symbol. */ | |
| 5681 | if (h != NULL) | |
| 5682 | { | |
| 19e08130 AM |
5683 | struct elf_dyn_relocs *p; |
| 5684 | struct elf_dyn_relocs **head; | |
| 5685 | ||
| ec338859 | 5686 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
| 19e08130 AM |
5687 | p = *head; |
| 5688 | if (p == NULL || p->sec != sec) | |
| 5689 | { | |
| 5690 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5691 | if (p == NULL) | |
| 5692 | return FALSE; | |
| 5693 | p->next = *head; | |
| 5694 | *head = p; | |
| 5695 | p->sec = sec; | |
| 5696 | p->count = 0; | |
| 5697 | p->pc_count = 0; | |
| 5698 | } | |
| 5699 | p->count += 1; | |
| 5700 | if (!must_be_dyn_reloc (info, r_type)) | |
| 5701 | p->pc_count += 1; | |
| 65f38f15 AM |
5702 | } |
| 5703 | else | |
| 5704 | { | |
| ec338859 AM |
5705 | /* Track dynamic relocs needed for local syms too. |
| 5706 | We really need local syms available to do this | |
| 5707 | easily. Oh well. */ | |
| 19e08130 AM |
5708 | struct ppc_dyn_relocs *p; |
| 5709 | struct ppc_dyn_relocs **head; | |
| 5710 | bfd_boolean is_ifunc; | |
| ec338859 | 5711 | asection *s; |
| 6edfbbad | 5712 | void *vpp; |
| 87d72d41 | 5713 | Elf_Internal_Sym *isym; |
| 6edfbbad | 5714 | |
| 87d72d41 AM |
5715 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5716 | abfd, r_symndx); | |
| 5717 | if (isym == NULL) | |
| b34976b6 | 5718 | return FALSE; |
| ec338859 | 5719 | |
| 87d72d41 AM |
5720 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 5721 | if (s == NULL) | |
| 5722 | s = sec; | |
| 5723 | ||
| 6edfbbad | 5724 | vpp = &elf_section_data (s)->local_dynrel; |
| 19e08130 AM |
5725 | head = (struct ppc_dyn_relocs **) vpp; |
| 5726 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
| 5727 | p = *head; | |
| 5728 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
| 5729 | p = p->next; | |
| 5730 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
| 5731 | { | |
| 5732 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5733 | if (p == NULL) | |
| 5734 | return FALSE; | |
| 5735 | p->next = *head; | |
| 5736 | *head = p; | |
| 5737 | p->sec = sec; | |
| 5738 | p->ifunc = is_ifunc; | |
| 5739 | p->count = 0; | |
| 5740 | } | |
| 5741 | p->count += 1; | |
| ec338859 | 5742 | } |
| 65f38f15 | 5743 | } |
| 5bd4f169 | 5744 | break; |
| 65f38f15 AM |
5745 | |
| 5746 | default: | |
| 96e0dda4 | 5747 | break; |
| 5bd4f169 AM |
5748 | } |
| 5749 | } | |
| 5750 | ||
| b34976b6 | 5751 | return TRUE; |
| 5bd4f169 AM |
5752 | } |
| 5753 | ||
| ee67d69a AM |
5754 | /* Merge backend specific data from an object file to the output |
| 5755 | object file when linking. */ | |
| 5756 | ||
| 5757 | static bfd_boolean | |
| 5758 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
| 5759 | { | |
| 5760 | unsigned long iflags, oflags; | |
| 5761 | ||
| 5762 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
| 5763 | return TRUE; | |
| 5764 | ||
| 5765 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
| 5766 | return TRUE; | |
| 5767 | ||
| 5768 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
| 5769 | return FALSE; | |
| 5770 | ||
| 5771 | iflags = elf_elfheader (ibfd)->e_flags; | |
| 5772 | oflags = elf_elfheader (obfd)->e_flags; | |
| 5773 | ||
| 5774 | if (!elf_flags_init (obfd) || oflags == 0) | |
| 5775 | { | |
| 5776 | elf_flags_init (obfd) = TRUE; | |
| 5777 | elf_elfheader (obfd)->e_flags = iflags; | |
| 5778 | } | |
| 5779 | else if (iflags == oflags || iflags == 0) | |
| 5780 | ; | |
| 5781 | else if (iflags & ~EF_PPC64_ABI) | |
| 5782 | { | |
| 5783 | (*_bfd_error_handler) | |
| 5784 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
| 5785 | bfd_set_error (bfd_error_bad_value); | |
| 5786 | return FALSE; | |
| 5787 | } | |
| 5788 | else | |
| 5789 | { | |
| 5790 | (*_bfd_error_handler) | |
| 5791 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
| 5792 | ibfd, iflags, oflags); | |
| 5793 | bfd_set_error (bfd_error_bad_value); | |
| 5794 | return FALSE; | |
| 5795 | } | |
| 5796 | ||
| 5797 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
| 5798 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
| 5799 | ||
| 5800 | return TRUE; | |
| 5801 | } | |
| 5802 | ||
| 5803 | static bfd_boolean | |
| 5804 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
| 5805 | { | |
| 5806 | /* Print normal ELF private data. */ | |
| 5807 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
| 5808 | ||
| 5809 | if (elf_elfheader (abfd)->e_flags != 0) | |
| 5810 | { | |
| 5811 | FILE *file = ptr; | |
| 5812 | ||
| 5813 | /* xgettext:c-format */ | |
| 5814 | fprintf (file, _("private flags = 0x%lx:"), | |
| 5815 | elf_elfheader (abfd)->e_flags); | |
| 5816 | ||
| 5817 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
| 5818 | fprintf (file, _(" [abiv%ld]"), | |
| 5819 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
| 5820 | fputc ('\n', file); | |
| 5821 | } | |
| 5822 | ||
| 5823 | return TRUE; | |
| 5824 | } | |
| 5825 | ||
| 8387904d AM |
5826 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
| 5827 | of the code entry point, and its section. */ | |
| 5828 | ||
| 5829 | static bfd_vma | |
| 5830 | opd_entry_value (asection *opd_sec, | |
| 5831 | bfd_vma offset, | |
| 5832 | asection **code_sec, | |
| aef36ac1 AM |
5833 | bfd_vma *code_off, |
| 5834 | bfd_boolean in_code_sec) | |
| 8387904d AM |
5835 | { |
| 5836 | bfd *opd_bfd = opd_sec->owner; | |
| 8860955f | 5837 | Elf_Internal_Rela *relocs; |
| 8387904d | 5838 | Elf_Internal_Rela *lo, *hi, *look; |
| 645ea6a9 | 5839 | bfd_vma val; |
| 8387904d | 5840 | |
| 9f296da3 AM |
5841 | /* No relocs implies we are linking a --just-symbols object, or looking |
| 5842 | at a final linked executable with addr2line or somesuch. */ | |
| 4b85d634 AM |
5843 | if (opd_sec->reloc_count == 0) |
| 5844 | { | |
| 729eabd5 | 5845 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
| 3b36f7e6 | 5846 | |
| 729eabd5 AM |
5847 | if (contents == NULL) |
| 5848 | { | |
| 5849 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
| 5850 | return (bfd_vma) -1; | |
| 5851 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
| 5852 | } | |
| ee1e4ede | 5853 | |
| 729eabd5 | 5854 | val = bfd_get_64 (opd_bfd, contents + offset); |
| aef36ac1 AM |
5855 | if (code_sec != NULL) |
| 5856 | { | |
| 5857 | asection *sec, *likely = NULL; | |
| ee1e4ede | 5858 | |
| aef36ac1 | 5859 | if (in_code_sec) |
| 4b85d634 | 5860 | { |
| aef36ac1 AM |
5861 | sec = *code_sec; |
| 5862 | if (sec->vma <= val | |
| 5863 | && val < sec->vma + sec->size) | |
| 5864 | likely = sec; | |
| 5865 | else | |
| 5866 | val = -1; | |
| 5867 | } | |
| 5868 | else | |
| 5869 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
| 5870 | if (sec->vma <= val | |
| 5871 | && (sec->flags & SEC_LOAD) != 0 | |
| 5872 | && (sec->flags & SEC_ALLOC) != 0) | |
| 5873 | likely = sec; | |
| 5874 | if (likely != NULL) | |
| 5875 | { | |
| 5876 | *code_sec = likely; | |
| 5877 | if (code_off != NULL) | |
| 5878 | *code_off = val - likely->vma; | |
| 4b85d634 AM |
5879 | } |
| 5880 | } | |
| aef36ac1 | 5881 | return val; |
| 4b85d634 AM |
5882 | } |
| 5883 | ||
| 0c8d6e5c | 5884 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
| 0ffa91dd | 5885 | |
| 729eabd5 | 5886 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
| 8860955f AM |
5887 | if (relocs == NULL) |
| 5888 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
| 645ea6a9 | 5889 | |
| 8387904d | 5890 | /* Go find the opd reloc at the sym address. */ |
| 8860955f | 5891 | lo = relocs; |
| 8387904d AM |
5892 | BFD_ASSERT (lo != NULL); |
| 5893 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
| 645ea6a9 | 5894 | val = (bfd_vma) -1; |
| 8387904d AM |
5895 | while (lo < hi) |
| 5896 | { | |
| 5897 | look = lo + (hi - lo) / 2; | |
| 5898 | if (look->r_offset < offset) | |
| 5899 | lo = look + 1; | |
| 5900 | else if (look->r_offset > offset) | |
| 5901 | hi = look; | |
| 5902 | else | |
| 5903 | { | |
| 0ffa91dd NC |
5904 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
| 5905 | ||
| 8387904d AM |
5906 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
| 5907 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
| 5908 | { | |
| 5909 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
| 8387904d AM |
5910 | asection *sec; |
| 5911 | ||
| 62599110 AM |
5912 | if (symndx < symtab_hdr->sh_info |
| 5913 | || elf_sym_hashes (opd_bfd) == NULL) | |
| 8387904d AM |
5914 | { |
| 5915 | Elf_Internal_Sym *sym; | |
| 5916 | ||
| 5917 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 5918 | if (sym == NULL) | |
| 5919 | { | |
| 62599110 AM |
5920 | size_t symcnt = symtab_hdr->sh_info; |
| 5921 | if (elf_sym_hashes (opd_bfd) == NULL) | |
| 5922 | symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
| 5923 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt, | |
| 8387904d AM |
5924 | 0, NULL, NULL, NULL); |
| 5925 | if (sym == NULL) | |
| 645ea6a9 | 5926 | break; |
| 8387904d AM |
5927 | symtab_hdr->contents = (bfd_byte *) sym; |
| 5928 | } | |
| 5929 | ||
| 5930 | sym += symndx; | |
| 5931 | val = sym->st_value; | |
| cb33740c | 5932 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
| 8387904d AM |
5933 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
| 5934 | } | |
| 5935 | else | |
| 5936 | { | |
| 5937 | struct elf_link_hash_entry **sym_hashes; | |
| 5938 | struct elf_link_hash_entry *rh; | |
| 5939 | ||
| 5940 | sym_hashes = elf_sym_hashes (opd_bfd); | |
| 5941 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
| 128205bb AM |
5942 | if (rh != NULL) |
| 5943 | { | |
| 5944 | rh = elf_follow_link (rh); | |
| 5945 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
| 5946 | || rh->root.type == bfd_link_hash_defweak); | |
| 5947 | val = rh->root.u.def.value; | |
| 5948 | sec = rh->root.u.def.section; | |
| 5949 | } | |
| 5950 | else | |
| 5951 | { | |
| 5952 | /* Handle the odd case where we can be called | |
| 5953 | during bfd_elf_link_add_symbols before the | |
| 5954 | symbol hashes have been fully populated. */ | |
| 5955 | Elf_Internal_Sym *sym; | |
| 5956 | ||
| 5957 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1, | |
| 5958 | symndx, NULL, NULL, NULL); | |
| 5959 | if (sym == NULL) | |
| 5960 | break; | |
| 5961 | ||
| 5962 | val = sym->st_value; | |
| 5963 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
| 5964 | free (sym); | |
| 5965 | } | |
| 8387904d AM |
5966 | } |
| 5967 | val += look->r_addend; | |
| 5968 | if (code_off != NULL) | |
| 5969 | *code_off = val; | |
| 5970 | if (code_sec != NULL) | |
| aef36ac1 AM |
5971 | { |
| 5972 | if (in_code_sec && *code_sec != sec) | |
| 5973 | return -1; | |
| 5974 | else | |
| 5975 | *code_sec = sec; | |
| 5976 | } | |
| 8387904d AM |
5977 | if (sec != NULL && sec->output_section != NULL) |
| 5978 | val += sec->output_section->vma + sec->output_offset; | |
| 8387904d AM |
5979 | } |
| 5980 | break; | |
| 5981 | } | |
| 5982 | } | |
| 645ea6a9 | 5983 | |
| 645ea6a9 | 5984 | return val; |
| 8387904d AM |
5985 | } |
| 5986 | ||
| aef36ac1 AM |
5987 | /* If the ELF symbol SYM might be a function in SEC, return the |
| 5988 | function size and set *CODE_OFF to the function's entry point, | |
| 5989 | otherwise return zero. */ | |
| 9f296da3 | 5990 | |
| aef36ac1 AM |
5991 | static bfd_size_type |
| 5992 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
| 5993 | bfd_vma *code_off) | |
| 9f296da3 | 5994 | { |
| aef36ac1 AM |
5995 | bfd_size_type size; |
| 5996 | ||
| 5997 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
| 5998 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
| 5999 | return 0; | |
| 6000 | ||
| 6001 | size = 0; | |
| 6002 | if (!(sym->flags & BSF_SYNTHETIC)) | |
| 6003 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
| 6004 | ||
| 6005 | if (strcmp (sym->section->name, ".opd") == 0) | |
| 9f296da3 | 6006 | { |
| aef36ac1 AM |
6007 | if (opd_entry_value (sym->section, sym->value, |
| 6008 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
| 6009 | return 0; | |
| 6010 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
| 6011 | symbol. This size has nothing to do with the code size of the | |
| 6012 | function, which is what we're supposed to return, but the | |
| 6013 | code size isn't available without looking up the dot-sym. | |
| 6014 | However, doing that would be a waste of time particularly | |
| 6015 | since elf_find_function will look at the dot-sym anyway. | |
| 6016 | Now, elf_find_function will keep the largest size of any | |
| 6017 | function sym found at the code address of interest, so return | |
| 6018 | 1 here to avoid it incorrectly caching a larger function size | |
| 6019 | for a small function. This does mean we return the wrong | |
| 6020 | size for a new-ABI function of size 24, but all that does is | |
| 6021 | disable caching for such functions. */ | |
| 6022 | if (size == 24) | |
| 6023 | size = 1; | |
| 9f296da3 | 6024 | } |
| aef36ac1 AM |
6025 | else |
| 6026 | { | |
| 6027 | if (sym->section != sec) | |
| 6028 | return 0; | |
| 6029 | *code_off = sym->value; | |
| 6030 | } | |
| 6031 | if (size == 0) | |
| 6032 | size = 1; | |
| 6033 | return size; | |
| 9f296da3 AM |
6034 | } |
| 6035 | ||
| 854b41e7 AM |
6036 | /* Return true if symbol is defined in a regular object file. */ |
| 6037 | ||
| 6038 | static bfd_boolean | |
| 6039 | is_static_defined (struct elf_link_hash_entry *h) | |
| 6040 | { | |
| 6041 | return ((h->root.type == bfd_link_hash_defined | |
| 6042 | || h->root.type == bfd_link_hash_defweak) | |
| 6043 | && h->root.u.def.section != NULL | |
| 6044 | && h->root.u.def.section->output_section != NULL); | |
| 6045 | } | |
| 6046 | ||
| b31867b6 AM |
6047 | /* If FDH is a function descriptor symbol, return the associated code |
| 6048 | entry symbol if it is defined. Return NULL otherwise. */ | |
| 6049 | ||
| 6050 | static struct ppc_link_hash_entry * | |
| 6051 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
| 6052 | { | |
| 6053 | if (fdh->is_func_descriptor) | |
| 6054 | { | |
| 6055 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
| 6056 | if (fh->elf.root.type == bfd_link_hash_defined | |
| 6057 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6058 | return fh; | |
| 6059 | } | |
| 6060 | return NULL; | |
| 6061 | } | |
| 6062 | ||
| 6063 | /* If FH is a function code entry symbol, return the associated | |
| 6064 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
| 6065 | ||
| 6066 | static struct ppc_link_hash_entry * | |
| 6067 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
| 6068 | { | |
| 6069 | if (fh->oh != NULL | |
| 6070 | && fh->oh->is_func_descriptor) | |
| 6071 | { | |
| 6072 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
| 6073 | if (fdh->elf.root.type == bfd_link_hash_defined | |
| 6074 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 6075 | return fdh; | |
| 6076 | } | |
| 6077 | return NULL; | |
| 6078 | } | |
| 6079 | ||
| 74f0fb50 AM |
6080 | /* Mark all our entry sym sections, both opd and code section. */ |
| 6081 | ||
| 6082 | static void | |
| 6083 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
| 6084 | { | |
| 6085 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6086 | struct bfd_sym_chain *sym; | |
| 6087 | ||
| 4dfe6ac6 NC |
6088 | if (htab == NULL) |
| 6089 | return; | |
| 6090 | ||
| 74f0fb50 AM |
6091 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
| 6092 | { | |
| b31867b6 | 6093 | struct ppc_link_hash_entry *eh, *fh; |
| 74f0fb50 AM |
6094 | asection *sec; |
| 6095 | ||
| 6096 | eh = (struct ppc_link_hash_entry *) | |
| b31867b6 | 6097 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
| 74f0fb50 AM |
6098 | if (eh == NULL) |
| 6099 | continue; | |
| 6100 | if (eh->elf.root.type != bfd_link_hash_defined | |
| 6101 | && eh->elf.root.type != bfd_link_hash_defweak) | |
| 6102 | continue; | |
| 6103 | ||
| b31867b6 AM |
6104 | fh = defined_code_entry (eh); |
| 6105 | if (fh != NULL) | |
| 74f0fb50 | 6106 | { |
| b31867b6 | 6107 | sec = fh->elf.root.u.def.section; |
| 74f0fb50 AM |
6108 | sec->flags |= SEC_KEEP; |
| 6109 | } | |
| 6110 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
| 6111 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6112 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6113 | &sec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 AM |
6114 | sec->flags |= SEC_KEEP; |
| 6115 | ||
| 6116 | sec = eh->elf.root.u.def.section; | |
| 6117 | sec->flags |= SEC_KEEP; | |
| 6118 | } | |
| 6119 | } | |
| 6120 | ||
| 64d03ab5 AM |
6121 | /* Mark sections containing dynamically referenced symbols. When |
| 6122 | building shared libraries, we must assume that any visible symbol is | |
| 6123 | referenced. */ | |
| 6124 | ||
| 6125 | static bfd_boolean | |
| 6126 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
| 6127 | { | |
| 6128 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
| 6129 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| b31867b6 | 6130 | struct ppc_link_hash_entry *fdh; |
| 64d03ab5 | 6131 | |
| 64d03ab5 | 6132 | /* Dynamic linking info is on the func descriptor sym. */ |
| b31867b6 AM |
6133 | fdh = defined_func_desc (eh); |
| 6134 | if (fdh != NULL) | |
| 6135 | eh = fdh; | |
| 64d03ab5 AM |
6136 | |
| 6137 | if ((eh->elf.root.type == bfd_link_hash_defined | |
| 6138 | || eh->elf.root.type == bfd_link_hash_defweak) | |
| 6139 | && (eh->elf.ref_dynamic | |
| 6140 | || (!info->executable | |
| 6141 | && eh->elf.def_regular | |
| 6142 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
| 4c58e0d8 AM |
6143 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
| 6144 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL | |
| 6145 | || !bfd_hide_sym_by_version (info->version_info, | |
| 6146 | eh->elf.root.root.string))))) | |
| 64d03ab5 AM |
6147 | { |
| 6148 | asection *code_sec; | |
| b31867b6 | 6149 | struct ppc_link_hash_entry *fh; |
| 64d03ab5 AM |
6150 | |
| 6151 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
| 6152 | ||
| 6153 | /* Function descriptor syms cause the associated | |
| 6154 | function code sym section to be marked. */ | |
| b31867b6 AM |
6155 | fh = defined_code_entry (eh); |
| 6156 | if (fh != NULL) | |
| 6157 | { | |
| 6158 | code_sec = fh->elf.root.u.def.section; | |
| 6159 | code_sec->flags |= SEC_KEEP; | |
| 6160 | } | |
| 64d03ab5 AM |
6161 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6162 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6163 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6164 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
| 64d03ab5 AM |
6165 | code_sec->flags |= SEC_KEEP; |
| 6166 | } | |
| 6167 | ||
| 6168 | return TRUE; | |
| 6169 | } | |
| 6170 | ||
| 5bd4f169 AM |
6171 | /* Return the section that should be marked against GC for a given |
| 6172 | relocation. */ | |
| 6173 | ||
| 6174 | static asection * | |
| 4ce794b7 | 6175 | ppc64_elf_gc_mark_hook (asection *sec, |
| fb34365b | 6176 | struct bfd_link_info *info, |
| 4ce794b7 AM |
6177 | Elf_Internal_Rela *rel, |
| 6178 | struct elf_link_hash_entry *h, | |
| 6179 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 6180 | { |
| ccfa59ea AM |
6181 | asection *rsec; |
| 6182 | ||
| ccfa59ea AM |
6183 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
| 6184 | function sections, as all functions are referenced in .opd. */ | |
| 6185 | rsec = NULL; | |
| 6186 | if (get_opd_info (sec) != NULL) | |
| 6187 | return rsec; | |
| 1e2f5b6e | 6188 | |
| 5bd4f169 AM |
6189 | if (h != NULL) |
| 6190 | { | |
| 04c9666a | 6191 | enum elf_ppc64_reloc_type r_type; |
| b31867b6 | 6192 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
| a33d1f77 | 6193 | |
| 4ce794b7 | 6194 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 6195 | switch (r_type) |
| 5bd4f169 AM |
6196 | { |
| 6197 | case R_PPC64_GNU_VTINHERIT: | |
| 6198 | case R_PPC64_GNU_VTENTRY: | |
| 6199 | break; | |
| 6200 | ||
| 6201 | default: | |
| 6202 | switch (h->root.type) | |
| 6203 | { | |
| 6204 | case bfd_link_hash_defined: | |
| 6205 | case bfd_link_hash_defweak: | |
| ccfa59ea | 6206 | eh = (struct ppc_link_hash_entry *) h; |
| b31867b6 AM |
6207 | fdh = defined_func_desc (eh); |
| 6208 | if (fdh != NULL) | |
| 6209 | eh = fdh; | |
| 1e2f5b6e AM |
6210 | |
| 6211 | /* Function descriptor syms cause the associated | |
| 6212 | function code sym section to be marked. */ | |
| b31867b6 AM |
6213 | fh = defined_code_entry (eh); |
| 6214 | if (fh != NULL) | |
| ccfa59ea AM |
6215 | { |
| 6216 | /* They also mark their opd section. */ | |
| 74f0fb50 | 6217 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6218 | |
| b31867b6 | 6219 | rsec = fh->elf.root.u.def.section; |
| ccfa59ea | 6220 | } |
| 8387904d AM |
6221 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6222 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6223 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6224 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 | 6225 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6226 | else |
| 1e2f5b6e AM |
6227 | rsec = h->root.u.def.section; |
| 6228 | break; | |
| 5bd4f169 AM |
6229 | |
| 6230 | case bfd_link_hash_common: | |
| 1e2f5b6e AM |
6231 | rsec = h->root.u.c.p->section; |
| 6232 | break; | |
| 5bd4f169 AM |
6233 | |
| 6234 | default: | |
| fb34365b | 6235 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 5bd4f169 AM |
6236 | } |
| 6237 | } | |
| 6238 | } | |
| 6239 | else | |
| 6240 | { | |
| 74f0fb50 | 6241 | struct _opd_sec_data *opd; |
| 1e2f5b6e AM |
6242 | |
| 6243 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 74f0fb50 AM |
6244 | opd = get_opd_info (rsec); |
| 6245 | if (opd != NULL && opd->func_sec != NULL) | |
| ccfa59ea | 6246 | { |
| 74f0fb50 | 6247 | rsec->gc_mark = 1; |
| ccfa59ea | 6248 | |
| 74f0fb50 | 6249 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
| ccfa59ea | 6250 | } |
| 5bd4f169 AM |
6251 | } |
| 6252 | ||
| 1e2f5b6e | 6253 | return rsec; |
| 5bd4f169 AM |
6254 | } |
| 6255 | ||
| 65f38f15 AM |
6256 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
| 6257 | section being removed. */ | |
| 5bd4f169 | 6258 | |
| b34976b6 | 6259 | static bfd_boolean |
| 4ce794b7 AM |
6260 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 6261 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 6262 | { |
| 411e1bfb | 6263 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
6264 | Elf_Internal_Shdr *symtab_hdr; |
| 6265 | struct elf_link_hash_entry **sym_hashes; | |
| 411e1bfb | 6266 | struct got_entry **local_got_ents; |
| 5bd4f169 | 6267 | const Elf_Internal_Rela *rel, *relend; |
| 5bd4f169 | 6268 | |
| 7dda2462 TG |
6269 | if (info->relocatable) |
| 6270 | return TRUE; | |
| 6271 | ||
| 680a3378 AM |
6272 | if ((sec->flags & SEC_ALLOC) == 0) |
| 6273 | return TRUE; | |
| 6274 | ||
| ec338859 AM |
6275 | elf_section_data (sec)->local_dynrel = NULL; |
| 6276 | ||
| 411e1bfb | 6277 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6278 | if (htab == NULL) |
| 6279 | return FALSE; | |
| 6280 | ||
| 0ffa91dd | 6281 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 6282 | sym_hashes = elf_sym_hashes (abfd); |
| 411e1bfb | 6283 | local_got_ents = elf_local_got_ents (abfd); |
| 5bd4f169 AM |
6284 | |
| 6285 | relend = relocs + sec->reloc_count; | |
| 6286 | for (rel = relocs; rel < relend; rel++) | |
| a33d1f77 AM |
6287 | { |
| 6288 | unsigned long r_symndx; | |
| 04c9666a | 6289 | enum elf_ppc64_reloc_type r_type; |
| 58ac9f71 | 6290 | struct elf_link_hash_entry *h = NULL; |
| f961d9dd | 6291 | unsigned char tls_type = 0; |
| 5bd4f169 | 6292 | |
| a33d1f77 | 6293 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 4ce794b7 | 6294 | r_type = ELF64_R_TYPE (rel->r_info); |
| 58ac9f71 AM |
6295 | if (r_symndx >= symtab_hdr->sh_info) |
| 6296 | { | |
| 6297 | struct ppc_link_hash_entry *eh; | |
| 6061a67d AM |
6298 | struct elf_dyn_relocs **pp; |
| 6299 | struct elf_dyn_relocs *p; | |
| 58ac9f71 AM |
6300 | |
| 6301 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 6302 | h = elf_follow_link (h); |
| 58ac9f71 AM |
6303 | eh = (struct ppc_link_hash_entry *) h; |
| 6304 | ||
| 6305 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
| 6306 | if (p->sec == sec) | |
| 6307 | { | |
| 6308 | /* Everything must go for SEC. */ | |
| 6309 | *pp = p->next; | |
| 6310 | break; | |
| 6311 | } | |
| 6312 | } | |
| 6313 | ||
| e054468f AM |
6314 | if (is_branch_reloc (r_type)) |
| 6315 | { | |
| 6316 | struct plt_entry **ifunc = NULL; | |
| 6317 | if (h != NULL) | |
| 6318 | { | |
| 6319 | if (h->type == STT_GNU_IFUNC) | |
| 6320 | ifunc = &h->plt.plist; | |
| 6321 | } | |
| 6322 | else if (local_got_ents != NULL) | |
| 6323 | { | |
| 6324 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 6325 | (local_got_ents + symtab_hdr->sh_info); | |
| f961d9dd | 6326 | unsigned char *local_got_tls_masks = (unsigned char *) |
| e054468f AM |
6327 | (local_plt + symtab_hdr->sh_info); |
| 6328 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
| 6329 | ifunc = local_plt + r_symndx; | |
| 6330 | } | |
| 6331 | if (ifunc != NULL) | |
| 6332 | { | |
| 6333 | struct plt_entry *ent; | |
| 6334 | ||
| 6335 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
| 6336 | if (ent->addend == rel->r_addend) | |
| 6337 | break; | |
| 6338 | if (ent == NULL) | |
| 6339 | abort (); | |
| 6340 | if (ent->plt.refcount > 0) | |
| 6341 | ent->plt.refcount -= 1; | |
| 6342 | continue; | |
| 6343 | } | |
| 6344 | } | |
| 6345 | ||
| a33d1f77 AM |
6346 | switch (r_type) |
| 6347 | { | |
| 411e1bfb AM |
6348 | case R_PPC64_GOT_TLSLD16: |
| 6349 | case R_PPC64_GOT_TLSLD16_LO: | |
| 6350 | case R_PPC64_GOT_TLSLD16_HI: | |
| 6351 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 6352 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
6353 | goto dogot; |
| 6354 | ||
| 6355 | case R_PPC64_GOT_TLSGD16: | |
| 6356 | case R_PPC64_GOT_TLSGD16_LO: | |
| 6357 | case R_PPC64_GOT_TLSGD16_HI: | |
| 6358 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 6359 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
6360 | goto dogot; |
| 6361 | ||
| 6362 | case R_PPC64_GOT_TPREL16_DS: | |
| 6363 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 6364 | case R_PPC64_GOT_TPREL16_HI: | |
| 6365 | case R_PPC64_GOT_TPREL16_HA: | |
| 6366 | tls_type = TLS_TLS | TLS_TPREL; | |
| 6367 | goto dogot; | |
| 6368 | ||
| 6369 | case R_PPC64_GOT_DTPREL16_DS: | |
| 6370 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 6371 | case R_PPC64_GOT_DTPREL16_HI: | |
| 6372 | case R_PPC64_GOT_DTPREL16_HA: | |
| 6373 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 6374 | goto dogot; | |
| 6375 | ||
| a33d1f77 AM |
6376 | case R_PPC64_GOT16: |
| 6377 | case R_PPC64_GOT16_DS: | |
| 6378 | case R_PPC64_GOT16_HA: | |
| 6379 | case R_PPC64_GOT16_HI: | |
| 6380 | case R_PPC64_GOT16_LO: | |
| 6381 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb AM |
6382 | dogot: |
| 6383 | { | |
| 6384 | struct got_entry *ent; | |
| 6385 | ||
| 58ac9f71 AM |
6386 | if (h != NULL) |
| 6387 | ent = h->got.glist; | |
| 411e1bfb AM |
6388 | else |
| 6389 | ent = local_got_ents[r_symndx]; | |
| 6390 | ||
| 6391 | for (; ent != NULL; ent = ent->next) | |
| 6392 | if (ent->addend == rel->r_addend | |
| e717da7e | 6393 | && ent->owner == abfd |
| 411e1bfb AM |
6394 | && ent->tls_type == tls_type) |
| 6395 | break; | |
| 6396 | if (ent == NULL) | |
| 6397 | abort (); | |
| 6398 | if (ent->got.refcount > 0) | |
| 6399 | ent->got.refcount -= 1; | |
| 6400 | } | |
| a33d1f77 | 6401 | break; |
| 65f38f15 | 6402 | |
| a33d1f77 AM |
6403 | case R_PPC64_PLT16_HA: |
| 6404 | case R_PPC64_PLT16_HI: | |
| 6405 | case R_PPC64_PLT16_LO: | |
| 6406 | case R_PPC64_PLT32: | |
| 6407 | case R_PPC64_PLT64: | |
| 721956f4 AM |
6408 | case R_PPC64_REL14: |
| 6409 | case R_PPC64_REL14_BRNTAKEN: | |
| 6410 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 | 6411 | case R_PPC64_REL24: |
| 58ac9f71 | 6412 | if (h != NULL) |
| 5d1634d7 | 6413 | { |
| 411e1bfb AM |
6414 | struct plt_entry *ent; |
| 6415 | ||
| 411e1bfb AM |
6416 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 6417 | if (ent->addend == rel->r_addend) | |
| 6418 | break; | |
| 7c6c1722 | 6419 | if (ent != NULL && ent->plt.refcount > 0) |
| 411e1bfb | 6420 | ent->plt.refcount -= 1; |
| 5d1634d7 | 6421 | } |
| e86ce104 | 6422 | break; |
| 5d1634d7 | 6423 | |
| a33d1f77 AM |
6424 | default: |
| 6425 | break; | |
| 6426 | } | |
| 6427 | } | |
| b34976b6 | 6428 | return TRUE; |
| 5bd4f169 AM |
6429 | } |
| 6430 | ||
| deb0e272 AM |
6431 | /* The maximum size of .sfpr. */ |
| 6432 | #define SFPR_MAX (218*4) | |
| 6433 | ||
| 6434 | struct sfpr_def_parms | |
| 6435 | { | |
| 699733f6 AM |
6436 | const char name[12]; |
| 6437 | unsigned char lo, hi; | |
| deb0e272 AM |
6438 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
| 6439 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
| 6440 | }; | |
| 6441 | ||
| 6442 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
| 6443 | ||
| 4dfe6ac6 | 6444 | static bfd_boolean |
| deb0e272 AM |
6445 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
| 6446 | { | |
| 6447 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6448 | unsigned int i; | |
| 6449 | size_t len = strlen (parm->name); | |
| 6450 | bfd_boolean writing = FALSE; | |
| 699733f6 | 6451 | char sym[16]; |
| deb0e272 | 6452 | |
| 4dfe6ac6 NC |
6453 | if (htab == NULL) |
| 6454 | return FALSE; | |
| 6455 | ||
| deb0e272 AM |
6456 | memcpy (sym, parm->name, len); |
| 6457 | sym[len + 2] = 0; | |
| 6458 | ||
| 6459 | for (i = parm->lo; i <= parm->hi; i++) | |
| 6460 | { | |
| 6461 | struct elf_link_hash_entry *h; | |
| 6462 | ||
| 6463 | sym[len + 0] = i / 10 + '0'; | |
| 6464 | sym[len + 1] = i % 10 + '0'; | |
| 6465 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
| 6466 | if (h != NULL | |
| f5385ebf | 6467 | && !h->def_regular) |
| deb0e272 AM |
6468 | { |
| 6469 | h->root.type = bfd_link_hash_defined; | |
| 6470 | h->root.u.def.section = htab->sfpr; | |
| 6471 | h->root.u.def.value = htab->sfpr->size; | |
| 6472 | h->type = STT_FUNC; | |
| f5385ebf | 6473 | h->def_regular = 1; |
| deb0e272 AM |
6474 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
| 6475 | writing = TRUE; | |
| 6476 | if (htab->sfpr->contents == NULL) | |
| 6477 | { | |
| 6478 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
| 6479 | if (htab->sfpr->contents == NULL) | |
| 6480 | return FALSE; | |
| 6481 | } | |
| 6482 | } | |
| 6483 | if (writing) | |
| 6484 | { | |
| 6485 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
| 6486 | if (i != parm->hi) | |
| 6487 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
| 6488 | else | |
| 6489 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
| 6490 | htab->sfpr->size = p - htab->sfpr->contents; | |
| 6491 | } | |
| 6492 | } | |
| 6493 | ||
| 6494 | return TRUE; | |
| 6495 | } | |
| 6496 | ||
| 6497 | static bfd_byte * | |
| 6498 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6499 | { | |
| 6500 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6501 | return p + 4; | |
| 6502 | } | |
| 6503 | ||
| 6504 | static bfd_byte * | |
| 6505 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6506 | { | |
| 6507 | p = savegpr0 (abfd, p, r); | |
| 6508 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
| 6509 | p = p + 4; | |
| 6510 | bfd_put_32 (abfd, BLR, p); | |
| 6511 | return p + 4; | |
| 6512 | } | |
| 6513 | ||
| 6514 | static bfd_byte * | |
| 6515 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6516 | { | |
| 6517 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6518 | return p + 4; | |
| 6519 | } | |
| 6520 | ||
| 6521 | static bfd_byte * | |
| 6522 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6523 | { | |
| 6524 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
| 6525 | p = p + 4; | |
| 6526 | p = restgpr0 (abfd, p, r); | |
| 6527 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6528 | p = p + 4; | |
| 6529 | if (r == 29) | |
| 6530 | { | |
| 6531 | p = restgpr0 (abfd, p, 30); | |
| 6532 | p = restgpr0 (abfd, p, 31); | |
| 6533 | } | |
| 6534 | bfd_put_32 (abfd, BLR, p); | |
| 6535 | return p + 4; | |
| 6536 | } | |
| 6537 | ||
| 6538 | static bfd_byte * | |
| 6539 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6540 | { | |
| 6541 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6542 | return p + 4; | |
| 6543 | } | |
| 6544 | ||
| 6545 | static bfd_byte * | |
| 6546 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6547 | { | |
| 6548 | p = savegpr1 (abfd, p, r); | |
| 6549 | bfd_put_32 (abfd, BLR, p); | |
| 6550 | return p + 4; | |
| 6551 | } | |
| 6552 | ||
| 6553 | static bfd_byte * | |
| 6554 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6555 | { | |
| 6556 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6557 | return p + 4; | |
| 6558 | } | |
| 6559 | ||
| 6560 | static bfd_byte * | |
| 6561 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6562 | { | |
| 6563 | p = restgpr1 (abfd, p, r); | |
| 6564 | bfd_put_32 (abfd, BLR, p); | |
| 6565 | return p + 4; | |
| 6566 | } | |
| 6567 | ||
| 6568 | static bfd_byte * | |
| 6569 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
| 6570 | { | |
| 6571 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6572 | return p + 4; | |
| 6573 | } | |
| 6574 | ||
| 6575 | static bfd_byte * | |
| 6576 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6577 | { | |
| 6578 | p = savefpr (abfd, p, r); | |
| 6579 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
| 6580 | p = p + 4; | |
| 6581 | bfd_put_32 (abfd, BLR, p); | |
| 6582 | return p + 4; | |
| 6583 | } | |
| 6584 | ||
| 6585 | static bfd_byte * | |
| 6586 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
| 6587 | { | |
| 6588 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6589 | return p + 4; | |
| 6590 | } | |
| 6591 | ||
| 6592 | static bfd_byte * | |
| 6593 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6594 | { | |
| 6595 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
| 6596 | p = p + 4; | |
| 6597 | p = restfpr (abfd, p, r); | |
| 6598 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6599 | p = p + 4; | |
| 6600 | if (r == 29) | |
| 6601 | { | |
| 6602 | p = restfpr (abfd, p, 30); | |
| 6603 | p = restfpr (abfd, p, 31); | |
| 6604 | } | |
| 6605 | bfd_put_32 (abfd, BLR, p); | |
| 6606 | return p + 4; | |
| 6607 | } | |
| 6608 | ||
| 6609 | static bfd_byte * | |
| 6610 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6611 | { | |
| 6612 | p = savefpr (abfd, p, r); | |
| 6613 | bfd_put_32 (abfd, BLR, p); | |
| 6614 | return p + 4; | |
| 6615 | } | |
| 6616 | ||
| 6617 | static bfd_byte * | |
| 6618 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6619 | { | |
| 6620 | p = restfpr (abfd, p, r); | |
| 6621 | bfd_put_32 (abfd, BLR, p); | |
| 6622 | return p + 4; | |
| 6623 | } | |
| 6624 | ||
| 6625 | static bfd_byte * | |
| 6626 | savevr (bfd *abfd, bfd_byte *p, int r) | |
| 6627 | { | |
| 6628 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6629 | p = p + 4; | |
| 6630 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
| 6631 | return p + 4; | |
| 6632 | } | |
| 6633 | ||
| 6634 | static bfd_byte * | |
| 6635 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6636 | { | |
| 6637 | p = savevr (abfd, p, r); | |
| 6638 | bfd_put_32 (abfd, BLR, p); | |
| 6639 | return p + 4; | |
| 6640 | } | |
| 6641 | ||
| 6642 | static bfd_byte * | |
| 6643 | restvr (bfd *abfd, bfd_byte *p, int r) | |
| 6644 | { | |
| 6645 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6646 | p = p + 4; | |
| 6647 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
| 6648 | return p + 4; | |
| 6649 | } | |
| 6650 | ||
| 6651 | static bfd_byte * | |
| 6652 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6653 | { | |
| 6654 | p = restvr (abfd, p, r); | |
| 6655 | bfd_put_32 (abfd, BLR, p); | |
| 6656 | return p + 4; | |
| 6657 | } | |
| 6658 | ||
| e86ce104 AM |
6659 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
| 6660 | information on function code symbol entries to their corresponding | |
| 6661 | function descriptor symbol entries. */ | |
| deb0e272 | 6662 | |
| b34976b6 | 6663 | static bfd_boolean |
| 4ce794b7 | 6664 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 6665 | { |
| e86ce104 | 6666 | struct bfd_link_info *info; |
| 65f38f15 | 6667 | struct ppc_link_hash_table *htab; |
| 411e1bfb | 6668 | struct plt_entry *ent; |
| 50bc7936 AM |
6669 | struct ppc_link_hash_entry *fh; |
| 6670 | struct ppc_link_hash_entry *fdh; | |
| 6671 | bfd_boolean force_local; | |
| 5bd4f169 | 6672 | |
| 50bc7936 AM |
6673 | fh = (struct ppc_link_hash_entry *) h; |
| 6674 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
| b34976b6 | 6675 | return TRUE; |
| e86ce104 | 6676 | |
| 4ce794b7 | 6677 | info = inf; |
| 65f38f15 | 6678 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6679 | if (htab == NULL) |
| 6680 | return FALSE; | |
| 5bd4f169 | 6681 | |
| c09bdfe5 AM |
6682 | /* Resolve undefined references to dot-symbols as the value |
| 6683 | in the function descriptor, if we have one in a regular object. | |
| 6684 | This is to satisfy cases like ".quad .foo". Calls to functions | |
| 6685 | in dynamic objects are handled elsewhere. */ | |
| 6686 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
| 6687 | && fh->was_undefined | |
| b31867b6 AM |
6688 | && (fdh = defined_func_desc (fh)) != NULL |
| 6689 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
| 6690 | && opd_entry_value (fdh->elf.root.u.def.section, | |
| 6691 | fdh->elf.root.u.def.value, | |
| c09bdfe5 | 6692 | &fh->elf.root.u.def.section, |
| aef36ac1 | 6693 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
| c09bdfe5 | 6694 | { |
| b31867b6 | 6695 | fh->elf.root.type = fdh->elf.root.type; |
| f5385ebf | 6696 | fh->elf.forced_local = 1; |
| b31867b6 AM |
6697 | fh->elf.def_regular = fdh->elf.def_regular; |
| 6698 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
| c09bdfe5 AM |
6699 | } |
| 6700 | ||
| e86ce104 AM |
6701 | /* If this is a function code symbol, transfer dynamic linking |
| 6702 | information to the function descriptor symbol. */ | |
| 50bc7936 | 6703 | if (!fh->is_func) |
| b34976b6 | 6704 | return TRUE; |
| e86ce104 | 6705 | |
| 50bc7936 | 6706 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
6707 | if (ent->plt.refcount > 0) |
| 6708 | break; | |
| 50bc7936 AM |
6709 | if (ent == NULL |
| 6710 | || fh->elf.root.root.string[0] != '.' | |
| 6711 | || fh->elf.root.root.string[1] == '\0') | |
| 6712 | return TRUE; | |
| 5bd4f169 | 6713 | |
| 50bc7936 AM |
6714 | /* Find the corresponding function descriptor symbol. Create it |
| 6715 | as undefined if necessary. */ | |
| 5bd4f169 | 6716 | |
| b31867b6 | 6717 | fdh = lookup_fdh (fh, htab); |
| 50bc7936 | 6718 | if (fdh == NULL |
| df131623 | 6719 | && !info->executable |
| 50bc7936 AM |
6720 | && (fh->elf.root.type == bfd_link_hash_undefined |
| 6721 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
| 6722 | { | |
| 908b32fc | 6723 | fdh = make_fdh (info, fh); |
| bb700d78 AM |
6724 | if (fdh == NULL) |
| 6725 | return FALSE; | |
| 50bc7936 | 6726 | } |
| 648cca2c | 6727 | |
| 908b32fc | 6728 | /* Fake function descriptors are made undefweak. If the function |
| 433817dd AM |
6729 | code symbol is strong undefined, make the fake sym the same. |
| 6730 | If the function code symbol is defined, then force the fake | |
| 6731 | descriptor local; We can't support overriding of symbols in a | |
| 6732 | shared library on a fake descriptor. */ | |
| 908b32fc AM |
6733 | |
| 6734 | if (fdh != NULL | |
| 6735 | && fdh->fake | |
| 433817dd | 6736 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
| 908b32fc | 6737 | { |
| 433817dd AM |
6738 | if (fh->elf.root.type == bfd_link_hash_undefined) |
| 6739 | { | |
| 6740 | fdh->elf.root.type = bfd_link_hash_undefined; | |
| 6741 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
| 6742 | } | |
| 6743 | else if (fh->elf.root.type == bfd_link_hash_defined | |
| 6744 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6745 | { | |
| 6746 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
| 6747 | } | |
| 908b32fc AM |
6748 | } |
| 6749 | ||
| 50bc7936 | 6750 | if (fdh != NULL |
| f5385ebf | 6751 | && !fdh->elf.forced_local |
| df131623 | 6752 | && (!info->executable |
| f5385ebf AM |
6753 | || fdh->elf.def_dynamic |
| 6754 | || fdh->elf.ref_dynamic | |
| 50bc7936 AM |
6755 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
| 6756 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
| 6757 | { | |
| 6758 | if (fdh->elf.dynindx == -1) | |
| c152c796 | 6759 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
| 50bc7936 | 6760 | return FALSE; |
| f5385ebf AM |
6761 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
| 6762 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
| 6763 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
| 6764 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
| 50bc7936 | 6765 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
| e86ce104 | 6766 | { |
| 40d16e0b | 6767 | move_plt_plist (fh, fdh); |
| f5385ebf | 6768 | fdh->elf.needs_plt = 1; |
| e86ce104 | 6769 | } |
| 50bc7936 | 6770 | fdh->is_func_descriptor = 1; |
| 34814b9f AM |
6771 | fdh->oh = fh; |
| 6772 | fh->oh = fdh; | |
| e86ce104 AM |
6773 | } |
| 6774 | ||
| 50bc7936 AM |
6775 | /* Now that the info is on the function descriptor, clear the |
| 6776 | function code sym info. Any function code syms for which we | |
| 6777 | don't have a definition in a regular file, we force local. | |
| 6778 | This prevents a shared library from exporting syms that have | |
| 6779 | been imported from another library. Function code syms that | |
| 6780 | are really in the library we must leave global to prevent the | |
| 6781 | linker dragging in a definition from a static library. */ | |
| 93f3fa99 AM |
6782 | force_local = (!fh->elf.def_regular |
| 6783 | || fdh == NULL | |
| 6784 | || !fdh->elf.def_regular | |
| 6785 | || fdh->elf.forced_local); | |
| 50bc7936 AM |
6786 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| 6787 | ||
| b34976b6 | 6788 | return TRUE; |
| e86ce104 | 6789 | } |
| 40b8271b | 6790 | |
| e86ce104 | 6791 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
| 82bd7b59 AM |
6792 | this hook to a) provide some gcc support functions, and b) transfer |
| 6793 | dynamic linking information gathered so far on function code symbol | |
| 6794 | entries, to their corresponding function descriptor symbol entries. */ | |
| deb0e272 | 6795 | |
| b34976b6 | 6796 | static bfd_boolean |
| 4ce794b7 AM |
6797 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
| 6798 | struct bfd_link_info *info) | |
| e86ce104 AM |
6799 | { |
| 6800 | struct ppc_link_hash_table *htab; | |
| 82bd7b59 | 6801 | unsigned int i; |
| 27fc25a1 | 6802 | static const struct sfpr_def_parms funcs[] = |
| deb0e272 AM |
6803 | { |
| 6804 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
| 6805 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
| 6806 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
| 6807 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
| 6808 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
| 6809 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
| 6810 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
| 6811 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
| 6812 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
| 6813 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
| 6814 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
| 6815 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
| 6816 | }; | |
| e86ce104 AM |
6817 | |
| 6818 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
6819 | if (htab == NULL) |
| 6820 | return FALSE; | |
| 6821 | ||
| 5295321c AM |
6822 | if (!info->relocatable |
| 6823 | && htab->elf.hgot != NULL) | |
| 6824 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
| c66bb0ee | 6825 | |
| 82bd7b59 AM |
6826 | if (htab->sfpr == NULL) |
| 6827 | /* We don't have any relocs. */ | |
| b34976b6 | 6828 | return TRUE; |
| 82bd7b59 | 6829 | |
| deb0e272 AM |
6830 | /* Provide any missing _save* and _rest* functions. */ |
| 6831 | htab->sfpr->size = 0; | |
| 27fc25a1 AM |
6832 | if (!info->relocatable) |
| 6833 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
| 6834 | if (!sfpr_define (info, &funcs[i])) | |
| 6835 | return FALSE; | |
| 82bd7b59 | 6836 | |
| 4ce794b7 | 6837 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
| 805fc799 | 6838 | |
| eea6121a | 6839 | if (htab->sfpr->size == 0) |
| 8423293d | 6840 | htab->sfpr->flags |= SEC_EXCLUDE; |
| 82bd7b59 | 6841 | |
| b34976b6 | 6842 | return TRUE; |
| e86ce104 AM |
6843 | } |
| 6844 | ||
| 6845 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
| 6846 | regular object. The current definition is in some section of the | |
| 6847 | dynamic object, but we're not including those sections. We have to | |
| 6848 | change the definition to something the rest of the link can | |
| 6849 | understand. */ | |
| 6850 | ||
| b34976b6 | 6851 | static bfd_boolean |
| 4ce794b7 AM |
6852 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 6853 | struct elf_link_hash_entry *h) | |
| e86ce104 AM |
6854 | { |
| 6855 | struct ppc_link_hash_table *htab; | |
| e86ce104 | 6856 | asection *s; |
| e86ce104 AM |
6857 | |
| 6858 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
6859 | if (htab == NULL) |
| 6860 | return FALSE; | |
| e86ce104 AM |
6861 | |
| 6862 | /* Deal with function syms. */ | |
| 6863 | if (h->type == STT_FUNC | |
| e054468f | 6864 | || h->type == STT_GNU_IFUNC |
| f5385ebf | 6865 | || h->needs_plt) |
| e86ce104 AM |
6866 | { |
| 6867 | /* Clear procedure linkage table information for any symbol that | |
| 6868 | won't need a .plt entry. */ | |
| 411e1bfb AM |
6869 | struct plt_entry *ent; |
| 6870 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
| 6871 | if (ent->plt.refcount > 0) | |
| 6872 | break; | |
| 8387904d | 6873 | if (ent == NULL |
| e054468f AM |
6874 | || (h->type != STT_GNU_IFUNC |
| 6875 | && (SYMBOL_CALLS_LOCAL (info, h) | |
| 6876 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
| 6877 | && h->root.type == bfd_link_hash_undefweak)))) | |
| 40b8271b | 6878 | { |
| 411e1bfb | 6879 | h->plt.plist = NULL; |
| f5385ebf | 6880 | h->needs_plt = 0; |
| 40b8271b | 6881 | } |
| 5bd4f169 | 6882 | } |
| bbd7ec4a | 6883 | else |
| 411e1bfb | 6884 | h->plt.plist = NULL; |
| 5bd4f169 AM |
6885 | |
| 6886 | /* If this is a weak symbol, and there is a real definition, the | |
| 6887 | processor independent code will have arranged for us to see the | |
| 6888 | real definition first, and we can just use the same value. */ | |
| f6e332e6 | 6889 | if (h->u.weakdef != NULL) |
| 5bd4f169 | 6890 | { |
| f6e332e6 AM |
6891 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 6892 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
| 6893 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
| 6894 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
| a23b6845 | 6895 | if (ELIMINATE_COPY_RELOCS) |
| f6e332e6 | 6896 | h->non_got_ref = h->u.weakdef->non_got_ref; |
| b34976b6 | 6897 | return TRUE; |
| 5bd4f169 AM |
6898 | } |
| 6899 | ||
| 5bd4f169 AM |
6900 | /* If we are creating a shared library, we must presume that the |
| 6901 | only references to the symbol are via the global offset table. | |
| 6902 | For such cases we need not do anything here; the relocations will | |
| 6903 | be handled correctly by relocate_section. */ | |
| 6904 | if (info->shared) | |
| b34976b6 | 6905 | return TRUE; |
| 5bd4f169 | 6906 | |
| 65f38f15 AM |
6907 | /* If there are no references to this symbol that do not use the |
| 6908 | GOT, we don't need to generate a copy reloc. */ | |
| f5385ebf | 6909 | if (!h->non_got_ref) |
| b34976b6 | 6910 | return TRUE; |
| 65f38f15 | 6911 | |
| b186458a JJ |
6912 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
| 6913 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
| 6914 | return TRUE; | |
| 6915 | ||
| f4656909 | 6916 | if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 | 6917 | { |
| f4656909 | 6918 | struct ppc_link_hash_entry * eh; |
| 6061a67d | 6919 | struct elf_dyn_relocs *p; |
| 65f38f15 | 6920 | |
| f4656909 AM |
6921 | eh = (struct ppc_link_hash_entry *) h; |
| 6922 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 6923 | { | |
| 6924 | s = p->sec->output_section; | |
| 6925 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 6926 | break; | |
| 6927 | } | |
| 6928 | ||
| 6929 | /* If we didn't find any dynamic relocs in read-only sections, then | |
| 6930 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
| 6931 | if (p == NULL) | |
| 6932 | { | |
| f5385ebf | 6933 | h->non_got_ref = 0; |
| f4656909 AM |
6934 | return TRUE; |
| 6935 | } | |
| 65f38f15 AM |
6936 | } |
| 6937 | ||
| 5d35169e | 6938 | if (h->plt.plist != NULL) |
| 97b639ba AM |
6939 | { |
| 6940 | /* We should never get here, but unfortunately there are versions | |
| 6941 | of gcc out there that improperly (for this ABI) put initialized | |
| 6942 | function pointers, vtable refs and suchlike in read-only | |
| 6943 | sections. Allow them to proceed, but warn that this might | |
| 6944 | break at runtime. */ | |
| 25f53a85 | 6945 | info->callbacks->einfo |
| bc30df16 | 6946 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
| 25f53a85 | 6947 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
| 97b639ba AM |
6948 | h->root.root.string); |
| 6949 | } | |
| 5d35169e AM |
6950 | |
| 6951 | /* This is a reference to a symbol defined by a dynamic object which | |
| 6952 | is not a function. */ | |
| 6953 | ||
| 5bd4f169 AM |
6954 | /* We must allocate the symbol in our .dynbss section, which will |
| 6955 | become part of the .bss section of the executable. There will be | |
| 6956 | an entry for this symbol in the .dynsym section. The dynamic | |
| 6957 | object will contain position independent code, so all references | |
| 6958 | from the dynamic object to this symbol will go through the global | |
| 6959 | offset table. The dynamic linker will use the .dynsym entry to | |
| 6960 | determine the address it must put in the global offset table, so | |
| 6961 | both the dynamic object and the regular object will refer to the | |
| 6962 | same memory location for the variable. */ | |
| 5bd4f169 | 6963 | |
| 04c9666a AM |
6964 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
| 6965 | to copy the initial value out of the dynamic object and into the | |
| 5bd4f169 AM |
6966 | runtime process image. We need to remember the offset into the |
| 6967 | .rela.bss section we are going to use. */ | |
| 1d7e9d18 | 6968 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
| 5bd4f169 | 6969 | { |
| eea6121a | 6970 | htab->relbss->size += sizeof (Elf64_External_Rela); |
| f5385ebf | 6971 | h->needs_copy = 1; |
| 5bd4f169 AM |
6972 | } |
| 6973 | ||
| 4ce794b7 | 6974 | s = htab->dynbss; |
| 5bd4f169 | 6975 | |
| 027297b7 | 6976 | return _bfd_elf_adjust_dynamic_copy (h, s); |
| 5bd4f169 AM |
6977 | } |
| 6978 | ||
| e86ce104 AM |
6979 | /* If given a function descriptor symbol, hide both the function code |
| 6980 | sym and the descriptor. */ | |
| 6981 | static void | |
| 4ce794b7 AM |
6982 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
| 6983 | struct elf_link_hash_entry *h, | |
| 6984 | bfd_boolean force_local) | |
| e86ce104 | 6985 | { |
| 34814b9f | 6986 | struct ppc_link_hash_entry *eh; |
| e86ce104 AM |
6987 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
| 6988 | ||
| 34814b9f AM |
6989 | eh = (struct ppc_link_hash_entry *) h; |
| 6990 | if (eh->is_func_descriptor) | |
| e86ce104 | 6991 | { |
| 34814b9f | 6992 | struct ppc_link_hash_entry *fh = eh->oh; |
| e86ce104 | 6993 | |
| 721956f4 | 6994 | if (fh == NULL) |
| d1329ca3 AM |
6995 | { |
| 6996 | const char *p, *q; | |
| 6997 | struct ppc_link_hash_table *htab; | |
| 6998 | char save; | |
| 6999 | ||
| 7000 | /* We aren't supposed to use alloca in BFD because on | |
| 7001 | systems which do not have alloca the version in libiberty | |
| 7002 | calls xmalloc, which might cause the program to crash | |
| 7003 | when it runs out of memory. This function doesn't have a | |
| 7004 | return status, so there's no way to gracefully return an | |
| 7005 | error. So cheat. We know that string[-1] can be safely | |
| 34814b9f AM |
7006 | accessed; It's either a string in an ELF string table, |
| 7007 | or allocated in an objalloc structure. */ | |
| d1329ca3 | 7008 | |
| 34814b9f | 7009 | p = eh->elf.root.root.string - 1; |
| d1329ca3 AM |
7010 | save = *p; |
| 7011 | *(char *) p = '.'; | |
| 7012 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
7013 | if (htab == NULL) |
| 7014 | return; | |
| 7015 | ||
| 34814b9f AM |
7016 | fh = (struct ppc_link_hash_entry *) |
| 7017 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
7018 | *(char *) p = save; |
| 7019 | ||
| 7020 | /* Unfortunately, if it so happens that the string we were | |
| 7021 | looking for was allocated immediately before this string, | |
| 7022 | then we overwrote the string terminator. That's the only | |
| 7023 | reason the lookup should fail. */ | |
| 7024 | if (fh == NULL) | |
| 7025 | { | |
| 34814b9f AM |
7026 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
| 7027 | while (q >= eh->elf.root.root.string && *q == *p) | |
| d1329ca3 | 7028 | --q, --p; |
| 34814b9f AM |
7029 | if (q < eh->elf.root.root.string && *p == '.') |
| 7030 | fh = (struct ppc_link_hash_entry *) | |
| 7031 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
7032 | } |
| 7033 | if (fh != NULL) | |
| 7034 | { | |
| 34814b9f AM |
7035 | eh->oh = fh; |
| 7036 | fh->oh = eh; | |
| d1329ca3 AM |
7037 | } |
| 7038 | } | |
| e86ce104 | 7039 | if (fh != NULL) |
| 34814b9f | 7040 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| e86ce104 AM |
7041 | } |
| 7042 | } | |
| 7043 | ||
| 411e1bfb | 7044 | static bfd_boolean |
| 8843416a AM |
7045 | get_sym_h (struct elf_link_hash_entry **hp, |
| 7046 | Elf_Internal_Sym **symp, | |
| 7047 | asection **symsecp, | |
| f961d9dd | 7048 | unsigned char **tls_maskp, |
| 8843416a AM |
7049 | Elf_Internal_Sym **locsymsp, |
| 7050 | unsigned long r_symndx, | |
| 7051 | bfd *ibfd) | |
| 411e1bfb | 7052 | { |
| 0ffa91dd | 7053 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
| 411e1bfb AM |
7054 | |
| 7055 | if (r_symndx >= symtab_hdr->sh_info) | |
| 7056 | { | |
| 7057 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
| 7058 | struct elf_link_hash_entry *h; | |
| 7059 | ||
| 7060 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 7061 | h = elf_follow_link (h); |
| 411e1bfb AM |
7062 | |
| 7063 | if (hp != NULL) | |
| 7064 | *hp = h; | |
| 7065 | ||
| 7066 | if (symp != NULL) | |
| 7067 | *symp = NULL; | |
| 7068 | ||
| 7069 | if (symsecp != NULL) | |
| 7070 | { | |
| 7071 | asection *symsec = NULL; | |
| 7072 | if (h->root.type == bfd_link_hash_defined | |
| 7073 | || h->root.type == bfd_link_hash_defweak) | |
| 7074 | symsec = h->root.u.def.section; | |
| 7075 | *symsecp = symsec; | |
| 7076 | } | |
| 7077 | ||
| e7b938ca | 7078 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7079 | { |
| 7080 | struct ppc_link_hash_entry *eh; | |
| 7081 | ||
| 7082 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 7083 | *tls_maskp = &eh->tls_mask; |
| 411e1bfb AM |
7084 | } |
| 7085 | } | |
| 7086 | else | |
| 7087 | { | |
| 7088 | Elf_Internal_Sym *sym; | |
| 7089 | Elf_Internal_Sym *locsyms = *locsymsp; | |
| 7090 | ||
| 7091 | if (locsyms == NULL) | |
| 7092 | { | |
| 7093 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 7094 | if (locsyms == NULL) | |
| 7095 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
| 7096 | symtab_hdr->sh_info, | |
| 7097 | 0, NULL, NULL, NULL); | |
| 7098 | if (locsyms == NULL) | |
| 7099 | return FALSE; | |
| 7100 | *locsymsp = locsyms; | |
| 7101 | } | |
| 7102 | sym = locsyms + r_symndx; | |
| 7103 | ||
| 7104 | if (hp != NULL) | |
| 7105 | *hp = NULL; | |
| 7106 | ||
| 7107 | if (symp != NULL) | |
| 7108 | *symp = sym; | |
| 7109 | ||
| 7110 | if (symsecp != NULL) | |
| cb33740c | 7111 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
| 411e1bfb | 7112 | |
| e7b938ca | 7113 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7114 | { |
| 7115 | struct got_entry **lgot_ents; | |
| f961d9dd | 7116 | unsigned char *tls_mask; |
| 411e1bfb | 7117 | |
| e7b938ca | 7118 | tls_mask = NULL; |
| 411e1bfb AM |
7119 | lgot_ents = elf_local_got_ents (ibfd); |
| 7120 | if (lgot_ents != NULL) | |
| 7121 | { | |
| e054468f AM |
7122 | struct plt_entry **local_plt = (struct plt_entry **) |
| 7123 | (lgot_ents + symtab_hdr->sh_info); | |
| f961d9dd | 7124 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 7125 | (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 7126 | tls_mask = &lgot_masks[r_symndx]; |
| 411e1bfb | 7127 | } |
| e7b938ca | 7128 | *tls_maskp = tls_mask; |
| 411e1bfb AM |
7129 | } |
| 7130 | } | |
| 7131 | return TRUE; | |
| 7132 | } | |
| 7133 | ||
| e7b938ca | 7134 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
| 951fd09b | 7135 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
| ad8e1ba5 | 7136 | type suitable for optimization, and 1 otherwise. */ |
| 951fd09b AM |
7137 | |
| 7138 | static int | |
| f961d9dd | 7139 | get_tls_mask (unsigned char **tls_maskp, |
| 3a71aa26 AM |
7140 | unsigned long *toc_symndx, |
| 7141 | bfd_vma *toc_addend, | |
| 0d4792f7 | 7142 | Elf_Internal_Sym **locsymsp, |
| 3a71aa26 AM |
7143 | const Elf_Internal_Rela *rel, |
| 7144 | bfd *ibfd) | |
| 411e1bfb AM |
7145 | { |
| 7146 | unsigned long r_symndx; | |
| 0d4792f7 | 7147 | int next_r; |
| 411e1bfb AM |
7148 | struct elf_link_hash_entry *h; |
| 7149 | Elf_Internal_Sym *sym; | |
| 7150 | asection *sec; | |
| 7151 | bfd_vma off; | |
| 7152 | ||
| 7153 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| e7b938ca | 7154 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
| 951fd09b | 7155 | return 0; |
| 411e1bfb | 7156 | |
| e7b938ca | 7157 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
| 411e1bfb | 7158 | || sec == NULL |
| 6bee8834 | 7159 | || ppc64_elf_section_data (sec) == NULL |
| 7c8fe5c4 | 7160 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
| 951fd09b | 7161 | return 1; |
| 411e1bfb AM |
7162 | |
| 7163 | /* Look inside a TOC section too. */ | |
| 7164 | if (h != NULL) | |
| 7165 | { | |
| 7166 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
| 7167 | off = h->root.u.def.value; | |
| 7168 | } | |
| 7169 | else | |
| 7170 | off = sym->st_value; | |
| 7171 | off += rel->r_addend; | |
| 7172 | BFD_ASSERT (off % 8 == 0); | |
| 3a71aa26 AM |
7173 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
| 7174 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
| 0d4792f7 AM |
7175 | if (toc_symndx != NULL) |
| 7176 | *toc_symndx = r_symndx; | |
| 3a71aa26 AM |
7177 | if (toc_addend != NULL) |
| 7178 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
| 7179 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
| 7180 | return 0; | |
| 854b41e7 | 7181 | if ((h == NULL || is_static_defined (h)) |
| 0d4792f7 AM |
7182 | && (next_r == -1 || next_r == -2)) |
| 7183 | return 1 - next_r; | |
| 951fd09b | 7184 | return 1; |
| 411e1bfb AM |
7185 | } |
| 7186 | ||
| 3b421ab3 AM |
7187 | /* Find (or create) an entry in the tocsave hash table. */ |
| 7188 | ||
| 7189 | static struct tocsave_entry * | |
| 7190 | tocsave_find (struct ppc_link_hash_table *htab, | |
| 7191 | enum insert_option insert, | |
| 7192 | Elf_Internal_Sym **local_syms, | |
| 7193 | const Elf_Internal_Rela *irela, | |
| 7194 | bfd *ibfd) | |
| 7195 | { | |
| 7196 | unsigned long r_indx; | |
| 7197 | struct elf_link_hash_entry *h; | |
| 7198 | Elf_Internal_Sym *sym; | |
| 7199 | struct tocsave_entry ent, *p; | |
| 7200 | hashval_t hash; | |
| 7201 | struct tocsave_entry **slot; | |
| 7202 | ||
| 7203 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 7204 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
| 7205 | return NULL; | |
| 7206 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
| 7207 | { | |
| 7208 | (*_bfd_error_handler) | |
| 7209 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
| 7210 | return NULL; | |
| 7211 | } | |
| 7212 | ||
| 7213 | if (h != NULL) | |
| 7214 | ent.offset = h->root.u.def.value; | |
| 7215 | else | |
| 7216 | ent.offset = sym->st_value; | |
| 7217 | ent.offset += irela->r_addend; | |
| 7218 | ||
| 7219 | hash = tocsave_htab_hash (&ent); | |
| 7220 | slot = ((struct tocsave_entry **) | |
| 7221 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
| 7222 | if (slot == NULL) | |
| 7223 | return NULL; | |
| 7224 | ||
| 7225 | if (*slot == NULL) | |
| 7226 | { | |
| 7227 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
| 7228 | if (p == NULL) | |
| 7229 | return NULL; | |
| 7230 | *p = ent; | |
| 7231 | *slot = p; | |
| 7232 | } | |
| 7233 | return *slot; | |
| 7234 | } | |
| 7235 | ||
| 754021d0 | 7236 | /* Adjust all global syms defined in opd sections. In gcc generated |
| 8387904d | 7237 | code for the old ABI, these will already have been done. */ |
| 754021d0 AM |
7238 | |
| 7239 | static bfd_boolean | |
| 7240 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 7241 | { | |
| 7242 | struct ppc_link_hash_entry *eh; | |
| 7243 | asection *sym_sec; | |
| 74f0fb50 | 7244 | struct _opd_sec_data *opd; |
| 754021d0 AM |
7245 | |
| 7246 | if (h->root.type == bfd_link_hash_indirect) | |
| 7247 | return TRUE; | |
| 7248 | ||
| 754021d0 AM |
7249 | if (h->root.type != bfd_link_hash_defined |
| 7250 | && h->root.type != bfd_link_hash_defweak) | |
| 7251 | return TRUE; | |
| 7252 | ||
| 7253 | eh = (struct ppc_link_hash_entry *) h; | |
| 7254 | if (eh->adjust_done) | |
| 7255 | return TRUE; | |
| 7256 | ||
| 7257 | sym_sec = eh->elf.root.u.def.section; | |
| 74f0fb50 AM |
7258 | opd = get_opd_info (sym_sec); |
| 7259 | if (opd != NULL && opd->adjust != NULL) | |
| 754021d0 | 7260 | { |
| 74f0fb50 | 7261 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
| 4025353c AM |
7262 | if (adjust == -1) |
| 7263 | { | |
| 7264 | /* This entry has been deleted. */ | |
| b3fac117 | 7265 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
| 81688140 AM |
7266 | if (dsec == NULL) |
| 7267 | { | |
| 7268 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
| dbaa2011 | 7269 | if (discarded_section (dsec)) |
| 81688140 | 7270 | { |
| b3fac117 | 7271 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
| 81688140 AM |
7272 | break; |
| 7273 | } | |
| 7274 | } | |
| 4025353c | 7275 | eh->elf.root.u.def.value = 0; |
| 81688140 | 7276 | eh->elf.root.u.def.section = dsec; |
| 4025353c AM |
7277 | } |
| 7278 | else | |
| 7279 | eh->elf.root.u.def.value += adjust; | |
| 754021d0 AM |
7280 | eh->adjust_done = 1; |
| 7281 | } | |
| 7282 | return TRUE; | |
| 7283 | } | |
| 7284 | ||
| 8c1d1bb8 | 7285 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
| 19e08130 | 7286 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
| 8c1d1bb8 AM |
7287 | have already been determined. */ |
| 7288 | ||
| 7289 | static bfd_boolean | |
| 7290 | dec_dynrel_count (bfd_vma r_info, | |
| 7291 | asection *sec, | |
| 7292 | struct bfd_link_info *info, | |
| 7293 | Elf_Internal_Sym **local_syms, | |
| 7294 | struct elf_link_hash_entry *h, | |
| 19e08130 | 7295 | Elf_Internal_Sym *sym) |
| 8c1d1bb8 AM |
7296 | { |
| 7297 | enum elf_ppc64_reloc_type r_type; | |
| 19e08130 | 7298 | asection *sym_sec = NULL; |
| 8c1d1bb8 AM |
7299 | |
| 7300 | /* Can this reloc be dynamic? This switch, and later tests here | |
| 7301 | should be kept in sync with the code in check_relocs. */ | |
| 7302 | r_type = ELF64_R_TYPE (r_info); | |
| 7303 | switch (r_type) | |
| 7304 | { | |
| 7305 | default: | |
| 7306 | return TRUE; | |
| 7307 | ||
| 7308 | case R_PPC64_TPREL16: | |
| 7309 | case R_PPC64_TPREL16_LO: | |
| 7310 | case R_PPC64_TPREL16_HI: | |
| 7311 | case R_PPC64_TPREL16_HA: | |
| 7312 | case R_PPC64_TPREL16_DS: | |
| 7313 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
7314 | case R_PPC64_TPREL16_HIGH: |
| 7315 | case R_PPC64_TPREL16_HIGHA: | |
| 8c1d1bb8 AM |
7316 | case R_PPC64_TPREL16_HIGHER: |
| 7317 | case R_PPC64_TPREL16_HIGHERA: | |
| 7318 | case R_PPC64_TPREL16_HIGHEST: | |
| 7319 | case R_PPC64_TPREL16_HIGHESTA: | |
| 7320 | if (!info->shared) | |
| 7321 | return TRUE; | |
| 7322 | ||
| 7323 | case R_PPC64_TPREL64: | |
| 7324 | case R_PPC64_DTPMOD64: | |
| 7325 | case R_PPC64_DTPREL64: | |
| 7326 | case R_PPC64_ADDR64: | |
| 7327 | case R_PPC64_REL30: | |
| 7328 | case R_PPC64_REL32: | |
| 7329 | case R_PPC64_REL64: | |
| 7330 | case R_PPC64_ADDR14: | |
| 7331 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 7332 | case R_PPC64_ADDR14_BRTAKEN: | |
| 7333 | case R_PPC64_ADDR16: | |
| 7334 | case R_PPC64_ADDR16_DS: | |
| 7335 | case R_PPC64_ADDR16_HA: | |
| 7336 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
7337 | case R_PPC64_ADDR16_HIGH: |
| 7338 | case R_PPC64_ADDR16_HIGHA: | |
| 8c1d1bb8 AM |
7339 | case R_PPC64_ADDR16_HIGHER: |
| 7340 | case R_PPC64_ADDR16_HIGHERA: | |
| 7341 | case R_PPC64_ADDR16_HIGHEST: | |
| 7342 | case R_PPC64_ADDR16_HIGHESTA: | |
| 7343 | case R_PPC64_ADDR16_LO: | |
| 7344 | case R_PPC64_ADDR16_LO_DS: | |
| 7345 | case R_PPC64_ADDR24: | |
| 7346 | case R_PPC64_ADDR32: | |
| 7347 | case R_PPC64_UADDR16: | |
| 7348 | case R_PPC64_UADDR32: | |
| 7349 | case R_PPC64_UADDR64: | |
| 7350 | case R_PPC64_TOC: | |
| 7351 | break; | |
| 7352 | } | |
| 7353 | ||
| 7354 | if (local_syms != NULL) | |
| 7355 | { | |
| 7356 | unsigned long r_symndx; | |
| 8c1d1bb8 AM |
7357 | bfd *ibfd = sec->owner; |
| 7358 | ||
| 7359 | r_symndx = ELF64_R_SYM (r_info); | |
| 7360 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
| 7361 | return FALSE; | |
| 7362 | } | |
| 7363 | ||
| 7364 | if ((info->shared | |
| 1d483afe | 7365 | && (must_be_dyn_reloc (info, r_type) |
| 8c1d1bb8 | 7366 | || (h != NULL |
| 198f1157 | 7367 | && (!SYMBOLIC_BIND (info, h) |
| 8c1d1bb8 AM |
7368 | || h->root.type == bfd_link_hash_defweak |
| 7369 | || !h->def_regular)))) | |
| 7370 | || (ELIMINATE_COPY_RELOCS | |
| 7371 | && !info->shared | |
| 7372 | && h != NULL | |
| 7373 | && (h->root.type == bfd_link_hash_defweak | |
| 7374 | || !h->def_regular))) | |
| 7375 | ; | |
| 7376 | else | |
| 7377 | return TRUE; | |
| 7378 | ||
| 7379 | if (h != NULL) | |
| 6edfbbad | 7380 | { |
| 19e08130 AM |
7381 | struct elf_dyn_relocs *p; |
| 7382 | struct elf_dyn_relocs **pp; | |
| 7383 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
| 7384 | ||
| 7385 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
| 7386 | with local syms for a given section. Also, symbol flags are | |
| 7387 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
| 7388 | report a dynreloc miscount. */ | |
| 7389 | if (*pp == NULL && info->gc_sections) | |
| 7390 | return TRUE; | |
| 7391 | ||
| 7392 | while ((p = *pp) != NULL) | |
| 60124e18 | 7393 | { |
| 19e08130 AM |
7394 | if (p->sec == sec) |
| 7395 | { | |
| 7396 | if (!must_be_dyn_reloc (info, r_type)) | |
| 7397 | p->pc_count -= 1; | |
| 7398 | p->count -= 1; | |
| 7399 | if (p->count == 0) | |
| 7400 | *pp = p->next; | |
| 7401 | return TRUE; | |
| 7402 | } | |
| 7403 | pp = &p->next; | |
| 60124e18 | 7404 | } |
| 6edfbbad | 7405 | } |
| 19e08130 AM |
7406 | else |
| 7407 | { | |
| 7408 | struct ppc_dyn_relocs *p; | |
| 7409 | struct ppc_dyn_relocs **pp; | |
| 7410 | void *vpp; | |
| 7411 | bfd_boolean is_ifunc; | |
| 8c1d1bb8 | 7412 | |
| 19e08130 AM |
7413 | if (local_syms == NULL) |
| 7414 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 7415 | if (sym_sec == NULL) | |
| 7416 | sym_sec = sec; | |
| c57da1a7 | 7417 | |
| 19e08130 AM |
7418 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
| 7419 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 7420 | ||
| 7421 | if (*pp == NULL && info->gc_sections) | |
| 7422 | return TRUE; | |
| 7423 | ||
| 7424 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
| 7425 | while ((p = *pp) != NULL) | |
| 8c1d1bb8 | 7426 | { |
| 19e08130 AM |
7427 | if (p->sec == sec && p->ifunc == is_ifunc) |
| 7428 | { | |
| 7429 | p->count -= 1; | |
| 7430 | if (p->count == 0) | |
| 7431 | *pp = p->next; | |
| 7432 | return TRUE; | |
| 7433 | } | |
| 7434 | pp = &p->next; | |
| 8c1d1bb8 | 7435 | } |
| 8c1d1bb8 AM |
7436 | } |
| 7437 | ||
| 8de848d8 | 7438 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
| 25f53a85 | 7439 | sec->owner, sec); |
| 8c1d1bb8 AM |
7440 | bfd_set_error (bfd_error_bad_value); |
| 7441 | return FALSE; | |
| 7442 | } | |
| 7443 | ||
| 754021d0 AM |
7444 | /* Remove unused Official Procedure Descriptor entries. Currently we |
| 7445 | only remove those associated with functions in discarded link-once | |
| 7446 | sections, or weakly defined functions that have been overridden. It | |
| 7447 | would be possible to remove many more entries for statically linked | |
| 7448 | applications. */ | |
| 7449 | ||
| b34976b6 | 7450 | bfd_boolean |
| 33c0ec9d | 7451 | ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping) |
| 1e2f5b6e AM |
7452 | { |
| 7453 | bfd *ibfd; | |
| 754021d0 | 7454 | bfd_boolean some_edited = FALSE; |
| 3f764659 | 7455 | asection *need_pad = NULL; |
| 1e2f5b6e | 7456 | |
| 411e1bfb | 7457 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 1e2f5b6e AM |
7458 | { |
| 7459 | asection *sec; | |
| 7460 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 7461 | Elf_Internal_Shdr *symtab_hdr; | |
| 6cdc0ccc | 7462 | Elf_Internal_Sym *local_syms; |
| 1e2f5b6e | 7463 | bfd_vma offset; |
| 74f0fb50 | 7464 | struct _opd_sec_data *opd; |
| 3f764659 JJ |
7465 | bfd_boolean need_edit, add_aux_fields; |
| 7466 | bfd_size_type cnt_16b = 0; | |
| 1e2f5b6e | 7467 | |
| 854b41e7 AM |
7468 | if (!is_ppc64_elf (ibfd)) |
| 7469 | continue; | |
| 7470 | ||
| 1e2f5b6e | 7471 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
| 46de2a7c | 7472 | if (sec == NULL || sec->size == 0) |
| 1e2f5b6e AM |
7473 | continue; |
| 7474 | ||
| dbaa2011 | 7475 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
| 4b85d634 AM |
7476 | continue; |
| 7477 | ||
| 1e2f5b6e AM |
7478 | if (sec->output_section == bfd_abs_section_ptr) |
| 7479 | continue; | |
| 7480 | ||
| 7481 | /* Look through the section relocs. */ | |
| 7482 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
| 7483 | continue; | |
| 7484 | ||
| 6cdc0ccc | 7485 | local_syms = NULL; |
| 0ffa91dd | 7486 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 1e2f5b6e AM |
7487 | |
| 7488 | /* Read the relocations. */ | |
| 4ce794b7 | 7489 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 45d6a902 | 7490 | info->keep_memory); |
| 1e2f5b6e | 7491 | if (relstart == NULL) |
| b34976b6 | 7492 | return FALSE; |
| 1e2f5b6e AM |
7493 | |
| 7494 | /* First run through the relocs to check they are sane, and to | |
| 7495 | determine whether we need to edit this opd section. */ | |
| b34976b6 | 7496 | need_edit = FALSE; |
| 3f764659 | 7497 | need_pad = sec; |
| 1e2f5b6e AM |
7498 | offset = 0; |
| 7499 | relend = relstart + sec->reloc_count; | |
| 50bc7936 | 7500 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 7501 | { |
| 04c9666a | 7502 | enum elf_ppc64_reloc_type r_type; |
| 1e2f5b6e AM |
7503 | unsigned long r_symndx; |
| 7504 | asection *sym_sec; | |
| 7505 | struct elf_link_hash_entry *h; | |
| 7506 | Elf_Internal_Sym *sym; | |
| 7507 | ||
| 3f764659 | 7508 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
| 1e2f5b6e AM |
7509 | only interested in the reloc pointing to a function entry |
| 7510 | point. */ | |
| 50bc7936 AM |
7511 | if (rel->r_offset != offset |
| 7512 | || rel + 1 >= relend | |
| 7513 | || (rel + 1)->r_offset != offset + 8) | |
| 1e2f5b6e AM |
7514 | { |
| 7515 | /* If someone messes with .opd alignment then after a | |
| 7516 | "ld -r" we might have padding in the middle of .opd. | |
| 7517 | Also, there's nothing to prevent someone putting | |
| 7518 | something silly in .opd with the assembler. No .opd | |
| b34976b6 | 7519 | optimization for them! */ |
| 3f764659 | 7520 | broken_opd: |
| 1e2f5b6e | 7521 | (*_bfd_error_handler) |
| d003868e | 7522 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
| b34976b6 | 7523 | need_edit = FALSE; |
| 1e2f5b6e AM |
7524 | break; |
| 7525 | } | |
| 7526 | ||
| 50bc7936 AM |
7527 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
| 7528 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
| 7529 | { | |
| 7530 | (*_bfd_error_handler) | |
| d003868e AM |
7531 | (_("%B: unexpected reloc type %u in .opd section"), |
| 7532 | ibfd, r_type); | |
| 50bc7936 AM |
7533 | need_edit = FALSE; |
| 7534 | break; | |
| 7535 | } | |
| 7536 | ||
| 1e2f5b6e | 7537 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 411e1bfb AM |
7538 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 7539 | r_symndx, ibfd)) | |
| 50bc7936 | 7540 | goto error_ret; |
| 1e2f5b6e AM |
7541 | |
| 7542 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
| 7543 | { | |
| 411e1bfb AM |
7544 | const char *sym_name; |
| 7545 | if (h != NULL) | |
| 7546 | sym_name = h->root.root.string; | |
| 7547 | else | |
| 26c61ae5 L |
7548 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 7549 | sym_sec); | |
| 411e1bfb | 7550 | |
| 1e2f5b6e | 7551 | (*_bfd_error_handler) |
| d003868e AM |
7552 | (_("%B: undefined sym `%s' in .opd section"), |
| 7553 | ibfd, sym_name); | |
| b34976b6 | 7554 | need_edit = FALSE; |
| 1e2f5b6e AM |
7555 | break; |
| 7556 | } | |
| 7557 | ||
| 51020317 AM |
7558 | /* opd entries are always for functions defined in the |
| 7559 | current input bfd. If the symbol isn't defined in the | |
| 7560 | input bfd, then we won't be using the function in this | |
| 7561 | bfd; It must be defined in a linkonce section in another | |
| 7562 | bfd, or is weak. It's also possible that we are | |
| 7563 | discarding the function due to a linker script /DISCARD/, | |
| 7564 | which we test for via the output_section. */ | |
| 7565 | if (sym_sec->owner != ibfd | |
| 7566 | || sym_sec->output_section == bfd_abs_section_ptr) | |
| b34976b6 | 7567 | need_edit = TRUE; |
| 1e2f5b6e | 7568 | |
| 50bc7936 | 7569 | rel += 2; |
| 3f764659 JJ |
7570 | if (rel == relend |
| 7571 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
| 7572 | { | |
| 7573 | if (sec->size == offset + 24) | |
| 7574 | { | |
| 7575 | need_pad = NULL; | |
| 7576 | break; | |
| 7577 | } | |
| 7578 | if (rel == relend && sec->size == offset + 16) | |
| 7579 | { | |
| 7580 | cnt_16b++; | |
| 7581 | break; | |
| 7582 | } | |
| 7583 | goto broken_opd; | |
| 7584 | } | |
| 7585 | ||
| 7586 | if (rel->r_offset == offset + 24) | |
| 7587 | offset += 24; | |
| 7588 | else if (rel->r_offset != offset + 16) | |
| 7589 | goto broken_opd; | |
| 7590 | else if (rel + 1 < relend | |
| 7591 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
| 7592 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
| 7593 | { | |
| 7594 | offset += 16; | |
| 7595 | cnt_16b++; | |
| 7596 | } | |
| 7597 | else if (rel + 2 < relend | |
| 7598 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
| 7599 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
| 7600 | { | |
| 7601 | offset += 24; | |
| 7602 | rel += 1; | |
| 7603 | } | |
| 7604 | else | |
| 7605 | goto broken_opd; | |
| 1e2f5b6e AM |
7606 | } |
| 7607 | ||
| 3f764659 JJ |
7608 | add_aux_fields = non_overlapping && cnt_16b > 0; |
| 7609 | ||
| 7610 | if (need_edit || add_aux_fields) | |
| 1e2f5b6e AM |
7611 | { |
| 7612 | Elf_Internal_Rela *write_rel; | |
| d4730f92 | 7613 | Elf_Internal_Shdr *rel_hdr; |
| 1e2f5b6e | 7614 | bfd_byte *rptr, *wptr; |
| 983bddc8 | 7615 | bfd_byte *new_contents; |
| b34976b6 | 7616 | bfd_boolean skip; |
| 3f764659 | 7617 | long opd_ent_size; |
| 74f0fb50 AM |
7618 | bfd_size_type amt; |
| 7619 | ||
| 983bddc8 | 7620 | new_contents = NULL; |
| 74f0fb50 AM |
7621 | amt = sec->size * sizeof (long) / 8; |
| 7622 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
| 33c0ec9d | 7623 | opd->adjust = bfd_zalloc (sec->owner, amt); |
| 74f0fb50 AM |
7624 | if (opd->adjust == NULL) |
| 7625 | return FALSE; | |
| 7626 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e AM |
7627 | |
| 7628 | /* This seems a waste of time as input .opd sections are all | |
| 7629 | zeros as generated by gcc, but I suppose there's no reason | |
| 7630 | this will always be so. We might start putting something in | |
| 7631 | the third word of .opd entries. */ | |
| 7632 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
| 7633 | { | |
| eea6121a AM |
7634 | bfd_byte *loc; |
| 7635 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
| 6cdc0ccc | 7636 | { |
| eea6121a AM |
7637 | if (loc != NULL) |
| 7638 | free (loc); | |
| 50bc7936 | 7639 | error_ret: |
| 6cdc0ccc AM |
7640 | if (local_syms != NULL |
| 7641 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7642 | free (local_syms); | |
| 6cdc0ccc AM |
7643 | if (elf_section_data (sec)->relocs != relstart) |
| 7644 | free (relstart); | |
| b34976b6 | 7645 | return FALSE; |
| 6cdc0ccc | 7646 | } |
| 1e2f5b6e AM |
7647 | sec->contents = loc; |
| 7648 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7649 | } | |
| 7650 | ||
| 7651 | elf_section_data (sec)->relocs = relstart; | |
| 7652 | ||
| 3f764659 | 7653 | new_contents = sec->contents; |
| 3f764659 JJ |
7654 | if (add_aux_fields) |
| 7655 | { | |
| 7656 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
| 7657 | if (new_contents == NULL) | |
| 7658 | return FALSE; | |
| 7659 | need_pad = FALSE; | |
| 3f764659 | 7660 | } |
| b4f4e59f AM |
7661 | wptr = new_contents; |
| 7662 | rptr = sec->contents; | |
| 3f764659 | 7663 | |
| 1e2f5b6e | 7664 | write_rel = relstart; |
| b34976b6 | 7665 | skip = FALSE; |
| 1e2f5b6e | 7666 | offset = 0; |
| 3f764659 | 7667 | opd_ent_size = 0; |
| 1e2f5b6e AM |
7668 | for (rel = relstart; rel < relend; rel++) |
| 7669 | { | |
| 50bc7936 AM |
7670 | unsigned long r_symndx; |
| 7671 | asection *sym_sec; | |
| 7672 | struct elf_link_hash_entry *h; | |
| 7673 | Elf_Internal_Sym *sym; | |
| 7674 | ||
| 7675 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7676 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| d37c89e5 | 7677 | r_symndx, ibfd)) |
| 50bc7936 AM |
7678 | goto error_ret; |
| 7679 | ||
| 1e2f5b6e AM |
7680 | if (rel->r_offset == offset) |
| 7681 | { | |
| 50bc7936 | 7682 | struct ppc_link_hash_entry *fdh = NULL; |
| 3f764659 JJ |
7683 | |
| 7684 | /* See if the .opd entry is full 24 byte or | |
| 7685 | 16 byte (with fd_aux entry overlapped with next | |
| 7686 | fd_func). */ | |
| 7687 | opd_ent_size = 24; | |
| 7688 | if ((rel + 2 == relend && sec->size == offset + 16) | |
| 7689 | || (rel + 3 < relend | |
| 7690 | && rel[2].r_offset == offset + 16 | |
| 7691 | && rel[3].r_offset == offset + 24 | |
| 7692 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
| 7693 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
| 7694 | opd_ent_size = 16; | |
| 7695 | ||
| 4025353c AM |
7696 | if (h != NULL |
| 7697 | && h->root.root.string[0] == '.') | |
| c4f68ce3 | 7698 | { |
| 4dfe6ac6 NC |
7699 | struct ppc_link_hash_table *htab; |
| 7700 | ||
| 7701 | htab = ppc_hash_table (info); | |
| 7702 | if (htab != NULL) | |
| 7703 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, | |
| 7704 | htab); | |
| c4f68ce3 AM |
7705 | if (fdh != NULL |
| 7706 | && fdh->elf.root.type != bfd_link_hash_defined | |
| 7707 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
| 7708 | fdh = NULL; | |
| 7709 | } | |
| 1e2f5b6e | 7710 | |
| 51020317 AM |
7711 | skip = (sym_sec->owner != ibfd |
| 7712 | || sym_sec->output_section == bfd_abs_section_ptr); | |
| a4aa0fb7 AM |
7713 | if (skip) |
| 7714 | { | |
| 4025353c | 7715 | if (fdh != NULL && sym_sec->owner == ibfd) |
| a4aa0fb7 AM |
7716 | { |
| 7717 | /* Arrange for the function descriptor sym | |
| 7718 | to be dropped. */ | |
| d6fe2dc1 AM |
7719 | fdh->elf.root.u.def.value = 0; |
| 7720 | fdh->elf.root.u.def.section = sym_sec; | |
| a4aa0fb7 | 7721 | } |
| 74f0fb50 | 7722 | opd->adjust[rel->r_offset / 8] = -1; |
| a4aa0fb7 AM |
7723 | } |
| 7724 | else | |
| 1e2f5b6e AM |
7725 | { |
| 7726 | /* We'll be keeping this opd entry. */ | |
| 7727 | ||
| 4025353c | 7728 | if (fdh != NULL) |
| 1e2f5b6e | 7729 | { |
| 754021d0 AM |
7730 | /* Redefine the function descriptor symbol to |
| 7731 | this location in the opd section. It is | |
| 7732 | necessary to update the value here rather | |
| 7733 | than using an array of adjustments as we do | |
| 7734 | for local symbols, because various places | |
| 7735 | in the generic ELF code use the value | |
| 7736 | stored in u.def.value. */ | |
| 3f764659 | 7737 | fdh->elf.root.u.def.value = wptr - new_contents; |
| 754021d0 | 7738 | fdh->adjust_done = 1; |
| 1e2f5b6e | 7739 | } |
| 754021d0 AM |
7740 | |
| 7741 | /* Local syms are a bit tricky. We could | |
| 7742 | tweak them as they can be cached, but | |
| 7743 | we'd need to look through the local syms | |
| 7744 | for the function descriptor sym which we | |
| 7745 | don't have at the moment. So keep an | |
| 7746 | array of adjustments. */ | |
| 74f0fb50 | 7747 | opd->adjust[rel->r_offset / 8] |
| 3f764659 | 7748 | = (wptr - new_contents) - (rptr - sec->contents); |
| 1e2f5b6e AM |
7749 | |
| 7750 | if (wptr != rptr) | |
| 3f764659 JJ |
7751 | memcpy (wptr, rptr, opd_ent_size); |
| 7752 | wptr += opd_ent_size; | |
| 7753 | if (add_aux_fields && opd_ent_size == 16) | |
| 7754 | { | |
| 7755 | memset (wptr, '\0', 8); | |
| 7756 | wptr += 8; | |
| 7757 | } | |
| 1e2f5b6e | 7758 | } |
| 3f764659 JJ |
7759 | rptr += opd_ent_size; |
| 7760 | offset += opd_ent_size; | |
| 1e2f5b6e AM |
7761 | } |
| 7762 | ||
| 50bc7936 AM |
7763 | if (skip) |
| 7764 | { | |
| 60124e18 AM |
7765 | if (!NO_OPD_RELOCS |
| 7766 | && !info->relocatable | |
| 18d944df | 7767 | && !dec_dynrel_count (rel->r_info, sec, info, |
| 19e08130 | 7768 | NULL, h, sym)) |
| 8c1d1bb8 | 7769 | goto error_ret; |
| 50bc7936 AM |
7770 | } |
| 7771 | else | |
| 1e2f5b6e | 7772 | { |
| 50bc7936 AM |
7773 | /* We need to adjust any reloc offsets to point to the |
| 7774 | new opd entries. While we're at it, we may as well | |
| 7775 | remove redundant relocs. */ | |
| 74f0fb50 | 7776 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
| 1e2f5b6e AM |
7777 | if (write_rel != rel) |
| 7778 | memcpy (write_rel, rel, sizeof (*rel)); | |
| 7779 | ++write_rel; | |
| 7780 | } | |
| 7781 | } | |
| 7782 | ||
| 3f764659 | 7783 | sec->size = wptr - new_contents; |
| 1e2f5b6e | 7784 | sec->reloc_count = write_rel - relstart; |
| 3f764659 JJ |
7785 | if (add_aux_fields) |
| 7786 | { | |
| 7787 | free (sec->contents); | |
| 7788 | sec->contents = new_contents; | |
| 7789 | } | |
| 7790 | ||
| 05bf9422 | 7791 | /* Fudge the header size too, as this is used later in |
| cdcf6e38 | 7792 | elf_bfd_final_link if we are emitting relocs. */ |
| d4730f92 BS |
7793 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
| 7794 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
| 754021d0 | 7795 | some_edited = TRUE; |
| 1e2f5b6e | 7796 | } |
| 6cdc0ccc | 7797 | else if (elf_section_data (sec)->relocs != relstart) |
| 1e2f5b6e | 7798 | free (relstart); |
| 6cdc0ccc | 7799 | |
| 411e1bfb AM |
7800 | if (local_syms != NULL |
| 7801 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7802 | { | |
| 7803 | if (!info->keep_memory) | |
| 7804 | free (local_syms); | |
| 7805 | else | |
| 7806 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 7807 | } | |
| 7808 | } | |
| 7809 | ||
| 754021d0 AM |
7810 | if (some_edited) |
| 7811 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
| 7812 | ||
| 3f764659 JJ |
7813 | /* If we are doing a final link and the last .opd entry is just 16 byte |
| 7814 | long, add a 8 byte padding after it. */ | |
| 7815 | if (need_pad != NULL && !info->relocatable) | |
| 7816 | { | |
| 7817 | bfd_byte *p; | |
| 7818 | ||
| 7819 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
| 7820 | { | |
| 7821 | BFD_ASSERT (need_pad->size > 0); | |
| 7822 | ||
| 7823 | p = bfd_malloc (need_pad->size + 8); | |
| 7824 | if (p == NULL) | |
| 7825 | return FALSE; | |
| 699733f6 | 7826 | |
| 3f764659 JJ |
7827 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
| 7828 | p, 0, need_pad->size)) | |
| 7829 | return FALSE; | |
| 7830 | ||
| 7831 | need_pad->contents = p; | |
| 7832 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7833 | } | |
| 7834 | else | |
| 7835 | { | |
| 7836 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
| 7837 | if (p == NULL) | |
| 7838 | return FALSE; | |
| 7839 | ||
| 7840 | need_pad->contents = p; | |
| 7841 | } | |
| 7842 | ||
| 7843 | memset (need_pad->contents + need_pad->size, 0, 8); | |
| 7844 | need_pad->size += 8; | |
| 7845 | } | |
| 7846 | ||
| 411e1bfb AM |
7847 | return TRUE; |
| 7848 | } | |
| 7849 | ||
| e1918d23 | 7850 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
| 411e1bfb | 7851 | |
| e1918d23 | 7852 | asection * |
| 33c0ec9d AM |
7853 | ppc64_elf_tls_setup (struct bfd_link_info *info, |
| 7854 | int no_tls_get_addr_opt, | |
| 7855 | int *no_multi_toc) | |
| 411e1bfb | 7856 | { |
| 411e1bfb AM |
7857 | struct ppc_link_hash_table *htab; |
| 7858 | ||
| 411e1bfb | 7859 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
7860 | if (htab == NULL) |
| 7861 | return NULL; | |
| 7862 | ||
| ee67d69a AM |
7863 | if (abiversion (info->output_bfd) == 1) |
| 7864 | htab->opd_abi = 1; | |
| 7865 | ||
| 33c0ec9d AM |
7866 | if (*no_multi_toc) |
| 7867 | htab->do_multi_toc = 0; | |
| 7868 | else if (!htab->do_multi_toc) | |
| 7869 | *no_multi_toc = 1; | |
| 7870 | ||
| 3a71aa26 AM |
7871 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
| 7872 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 7873 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
7874 | /* Move dynamic linking info to the function descriptor sym. */ |
| 7875 | if (htab->tls_get_addr != NULL) | |
| 7876 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
| 3a71aa26 AM |
7877 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
| 7878 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
| 7879 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
7880 | if (!no_tls_get_addr_opt) |
| 7881 | { | |
| 7882 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
| 7883 | ||
| 7884 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
| 7885 | FALSE, FALSE, TRUE); | |
| 7886 | if (opt != NULL) | |
| 7887 | func_desc_adjust (opt, info); | |
| 7888 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
| 7889 | FALSE, FALSE, TRUE); | |
| 7890 | if (opt_fd != NULL | |
| 7891 | && (opt_fd->root.type == bfd_link_hash_defined | |
| 7892 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
| 7893 | { | |
| 7894 | /* If glibc supports an optimized __tls_get_addr call stub, | |
| 7895 | signalled by the presence of __tls_get_addr_opt, and we'll | |
| 7896 | be calling __tls_get_addr via a plt call stub, then | |
| 7897 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
| 7898 | tga_fd = &htab->tls_get_addr_fd->elf; | |
| 7899 | if (htab->elf.dynamic_sections_created | |
| 7900 | && tga_fd != NULL | |
| 7901 | && (tga_fd->type == STT_FUNC | |
| 7902 | || tga_fd->needs_plt) | |
| 7903 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
| 7904 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
| 7905 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
| 7906 | { | |
| 7907 | struct plt_entry *ent; | |
| 7908 | ||
| 7909 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
| 7910 | if (ent->plt.refcount > 0) | |
| 7911 | break; | |
| 7912 | if (ent != NULL) | |
| 7913 | { | |
| 7914 | tga_fd->root.type = bfd_link_hash_indirect; | |
| 7915 | tga_fd->root.u.i.link = &opt_fd->root; | |
| 7916 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
| 7917 | if (opt_fd->dynindx != -1) | |
| 7918 | { | |
| 7919 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
| 7920 | opt_fd->dynindx = -1; | |
| 7921 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 7922 | opt_fd->dynstr_index); | |
| 7923 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
| 854b41e7 | 7924 | return NULL; |
| a7f2871e AM |
7925 | } |
| 7926 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
| 7927 | tga = &htab->tls_get_addr->elf; | |
| 7928 | if (opt != NULL && tga != NULL) | |
| 7929 | { | |
| 7930 | tga->root.type = bfd_link_hash_indirect; | |
| 7931 | tga->root.u.i.link = &opt->root; | |
| 7932 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
| 7933 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
| 7934 | tga->forced_local); | |
| 7935 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
| 7936 | } | |
| 7937 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
| 7938 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
| 7939 | if (htab->tls_get_addr != NULL) | |
| 7940 | { | |
| 7941 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
| 7942 | htab->tls_get_addr->is_func = 1; | |
| 7943 | } | |
| 7944 | } | |
| 7945 | } | |
| 7946 | } | |
| 7947 | else | |
| 7948 | no_tls_get_addr_opt = TRUE; | |
| 7949 | } | |
| 7950 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
| 33c0ec9d | 7951 | return _bfd_elf_tls_setup (info->output_bfd, info); |
| 3a71aa26 | 7952 | } |
| 8387904d | 7953 | |
| 3a71aa26 AM |
7954 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
| 7955 | HASH1 or HASH2. */ | |
| 8387904d | 7956 | |
| 3a71aa26 AM |
7957 | static bfd_boolean |
| 7958 | branch_reloc_hash_match (const bfd *ibfd, | |
| 7959 | const Elf_Internal_Rela *rel, | |
| 7960 | const struct ppc_link_hash_entry *hash1, | |
| 7961 | const struct ppc_link_hash_entry *hash2) | |
| 7962 | { | |
| 7963 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 7964 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
| 7965 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7966 | ||
| e054468f | 7967 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
| 8387904d | 7968 | { |
| 3a71aa26 AM |
7969 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
| 7970 | struct elf_link_hash_entry *h; | |
| 8387904d | 7971 | |
| 3a71aa26 | 7972 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| b31867b6 | 7973 | h = elf_follow_link (h); |
| 3a71aa26 AM |
7974 | if (h == &hash1->elf || h == &hash2->elf) |
| 7975 | return TRUE; | |
| a48ebf4d | 7976 | } |
| 3a71aa26 | 7977 | return FALSE; |
| 951fd09b | 7978 | } |
| 411e1bfb | 7979 | |
| 951fd09b AM |
7980 | /* Run through all the TLS relocs looking for optimization |
| 7981 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
| 7982 | a preliminary section layout so that we know the TLS segment | |
| 7983 | offsets. We can't optimize earlier because some optimizations need | |
| 7984 | to know the tp offset, and we need to optimize before allocating | |
| 7985 | dynamic relocations. */ | |
| 7986 | ||
| 7987 | bfd_boolean | |
| 33c0ec9d | 7988 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
| 951fd09b AM |
7989 | { |
| 7990 | bfd *ibfd; | |
| 7991 | asection *sec; | |
| 7992 | struct ppc_link_hash_table *htab; | |
| 663a1470 | 7993 | unsigned char *toc_ref; |
| 102890f0 | 7994 | int pass; |
| 951fd09b | 7995 | |
| 1d483afe | 7996 | if (info->relocatable || !info->executable) |
| 411e1bfb AM |
7997 | return TRUE; |
| 7998 | ||
| 951fd09b | 7999 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
8000 | if (htab == NULL) |
| 8001 | return FALSE; | |
| 8002 | ||
| 663a1470 AM |
8003 | /* Make two passes over the relocs. On the first pass, mark toc |
| 8004 | entries involved with tls relocs, and check that tls relocs | |
| 8005 | involved in setting up a tls_get_addr call are indeed followed by | |
| 8006 | such a call. If they are not, we can't do any tls optimization. | |
| 8007 | On the second pass twiddle tls_mask flags to notify | |
| 8008 | relocate_section that optimization can be done, and adjust got | |
| 8009 | and plt refcounts. */ | |
| 8010 | toc_ref = NULL; | |
| 8011 | for (pass = 0; pass < 2; ++pass) | |
| 8012 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 8013 | { | |
| 8014 | Elf_Internal_Sym *locsyms = NULL; | |
| 8015 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
| 8016 | ||
| 102890f0 AM |
8017 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 8018 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
| 8019 | { | |
| 8020 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 663a1470 | 8021 | bfd_boolean found_tls_get_addr_arg = 0; |
| 411e1bfb | 8022 | |
| 102890f0 AM |
8023 | /* Read the relocations. */ |
| 8024 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 8025 | info->keep_memory); | |
| 8026 | if (relstart == NULL) | |
| 8027 | return FALSE; | |
| 411e1bfb | 8028 | |
| 102890f0 AM |
8029 | relend = relstart + sec->reloc_count; |
| 8030 | for (rel = relstart; rel < relend; rel++) | |
| 8031 | { | |
| 8032 | enum elf_ppc64_reloc_type r_type; | |
| 8033 | unsigned long r_symndx; | |
| 8034 | struct elf_link_hash_entry *h; | |
| 8035 | Elf_Internal_Sym *sym; | |
| 8036 | asection *sym_sec; | |
| f961d9dd AM |
8037 | unsigned char *tls_mask; |
| 8038 | unsigned char tls_set, tls_clear, tls_type = 0; | |
| 102890f0 AM |
8039 | bfd_vma value; |
| 8040 | bfd_boolean ok_tprel, is_local; | |
| 8041 | long toc_ref_index = 0; | |
| 8042 | int expecting_tls_get_addr = 0; | |
| 663a1470 | 8043 | bfd_boolean ret = FALSE; |
| 411e1bfb | 8044 | |
| 102890f0 AM |
8045 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8046 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
| 8047 | r_symndx, ibfd)) | |
| 8048 | { | |
| 8049 | err_free_rel: | |
| 8050 | if (elf_section_data (sec)->relocs != relstart) | |
| 8051 | free (relstart); | |
| 8052 | if (toc_ref != NULL) | |
| 8053 | free (toc_ref); | |
| 8054 | if (locsyms != NULL | |
| 0ffa91dd | 8055 | && (elf_symtab_hdr (ibfd).contents |
| 102890f0 AM |
8056 | != (unsigned char *) locsyms)) |
| 8057 | free (locsyms); | |
| 663a1470 | 8058 | return ret; |
| 102890f0 | 8059 | } |
| 411e1bfb | 8060 | |
| 102890f0 AM |
8061 | if (h != NULL) |
| 8062 | { | |
| 766bc656 AM |
8063 | if (h->root.type == bfd_link_hash_defined |
| 8064 | || h->root.type == bfd_link_hash_defweak) | |
| 8065 | value = h->root.u.def.value; | |
| 8066 | else if (h->root.type == bfd_link_hash_undefweak) | |
| 8067 | value = 0; | |
| 8068 | else | |
| 663a1470 AM |
8069 | { |
| 8070 | found_tls_get_addr_arg = 0; | |
| 8071 | continue; | |
| 8072 | } | |
| 102890f0 AM |
8073 | } |
| 8074 | else | |
| 8075 | /* Symbols referenced by TLS relocs must be of type | |
| 8076 | STT_TLS. So no need for .opd local sym adjust. */ | |
| 8077 | value = sym->st_value; | |
| 8078 | ||
| 8079 | ok_tprel = FALSE; | |
| 8080 | is_local = FALSE; | |
| 8081 | if (h == NULL | |
| 8082 | || !h->def_dynamic) | |
| 8083 | { | |
| 8084 | is_local = TRUE; | |
| 766bc656 AM |
8085 | if (h != NULL |
| 8086 | && h->root.type == bfd_link_hash_undefweak) | |
| 8087 | ok_tprel = TRUE; | |
| 8088 | else | |
| 8089 | { | |
| 8090 | value += sym_sec->output_offset; | |
| 8091 | value += sym_sec->output_section->vma; | |
| 8092 | value -= htab->elf.tls_sec->vma; | |
| 8093 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
| 8094 | < (bfd_vma) 1 << 32); | |
| 8095 | } | |
| 102890f0 | 8096 | } |
| 951fd09b | 8097 | |
| 102890f0 | 8098 | r_type = ELF64_R_TYPE (rel->r_info); |
| 663a1470 AM |
8099 | /* If this section has old-style __tls_get_addr calls |
| 8100 | without marker relocs, then check that each | |
| 8101 | __tls_get_addr call reloc is preceded by a reloc | |
| 8102 | that conceivably belongs to the __tls_get_addr arg | |
| 8103 | setup insn. If we don't find matching arg setup | |
| 8104 | relocs, don't do any tls optimization. */ | |
| 8105 | if (pass == 0 | |
| 8106 | && sec->has_tls_get_addr_call | |
| 8107 | && h != NULL | |
| 8108 | && (h == &htab->tls_get_addr->elf | |
| 8109 | || h == &htab->tls_get_addr_fd->elf) | |
| 8110 | && !found_tls_get_addr_arg | |
| 8111 | && is_branch_reloc (r_type)) | |
| 8112 | { | |
| 25f53a85 | 8113 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
| 663a1470 AM |
8114 | "TLS optimization disabled\n"), |
| 8115 | ibfd, sec, rel->r_offset); | |
| 8116 | ret = TRUE; | |
| 8117 | goto err_free_rel; | |
| 8118 | } | |
| 8119 | ||
| 8120 | found_tls_get_addr_arg = 0; | |
| 102890f0 AM |
8121 | switch (r_type) |
| 8122 | { | |
| 8123 | case R_PPC64_GOT_TLSLD16: | |
| 8124 | case R_PPC64_GOT_TLSLD16_LO: | |
| 8125 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8126 | found_tls_get_addr_arg = 1; |
| 102890f0 AM |
8127 | /* Fall thru */ |
| 8128 | ||
| 8129 | case R_PPC64_GOT_TLSLD16_HI: | |
| 8130 | case R_PPC64_GOT_TLSLD16_HA: | |
| 8131 | /* These relocs should never be against a symbol | |
| 8132 | defined in a shared lib. Leave them alone if | |
| 8133 | that turns out to be the case. */ | |
| 8134 | if (!is_local) | |
| 8135 | continue; | |
| 411e1bfb | 8136 | |
| 102890f0 | 8137 | /* LD -> LE */ |
| 411e1bfb | 8138 | tls_set = 0; |
| 102890f0 AM |
8139 | tls_clear = TLS_LD; |
| 8140 | tls_type = TLS_TLS | TLS_LD; | |
| 8141 | break; | |
| 411e1bfb | 8142 | |
| 102890f0 AM |
8143 | case R_PPC64_GOT_TLSGD16: |
| 8144 | case R_PPC64_GOT_TLSGD16_LO: | |
| 8145 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8146 | found_tls_get_addr_arg = 1; |
| 102890f0 AM |
8147 | /* Fall thru */ |
| 8148 | ||
| 8149 | case R_PPC64_GOT_TLSGD16_HI: | |
| 8150 | case R_PPC64_GOT_TLSGD16_HA: | |
| 8151 | if (ok_tprel) | |
| 8152 | /* GD -> LE */ | |
| 411e1bfb | 8153 | tls_set = 0; |
| 102890f0 AM |
8154 | else |
| 8155 | /* GD -> IE */ | |
| 8156 | tls_set = TLS_TLS | TLS_TPRELGD; | |
| 8157 | tls_clear = TLS_GD; | |
| 8158 | tls_type = TLS_TLS | TLS_GD; | |
| 8159 | break; | |
| 8160 | ||
| 8161 | case R_PPC64_GOT_TPREL16_DS: | |
| 8162 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 8163 | case R_PPC64_GOT_TPREL16_HI: | |
| 8164 | case R_PPC64_GOT_TPREL16_HA: | |
| 8165 | if (ok_tprel) | |
| 8166 | { | |
| 8167 | /* IE -> LE */ | |
| 8168 | tls_set = 0; | |
| 8169 | tls_clear = TLS_TPREL; | |
| 8170 | tls_type = TLS_TLS | TLS_TPREL; | |
| 8171 | break; | |
| 8172 | } | |
| 411e1bfb AM |
8173 | continue; |
| 8174 | ||
| 727fc41e AM |
8175 | case R_PPC64_TLSGD: |
| 8176 | case R_PPC64_TLSLD: | |
| 663a1470 AM |
8177 | found_tls_get_addr_arg = 1; |
| 8178 | /* Fall thru */ | |
| 8179 | ||
| 8180 | case R_PPC64_TLS: | |
| 8181 | case R_PPC64_TOC16: | |
| 8182 | case R_PPC64_TOC16_LO: | |
| 102890f0 AM |
8183 | if (sym_sec == NULL || sym_sec != toc) |
| 8184 | continue; | |
| 8185 | ||
| 8186 | /* Mark this toc entry as referenced by a TLS | |
| 8187 | code sequence. We can do that now in the | |
| 8188 | case of R_PPC64_TLS, and after checking for | |
| 8189 | tls_get_addr for the TOC16 relocs. */ | |
| 8190 | if (toc_ref == NULL) | |
| 663a1470 AM |
8191 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
| 8192 | if (toc_ref == NULL) | |
| 8193 | goto err_free_rel; | |
| 8194 | ||
| 102890f0 AM |
8195 | if (h != NULL) |
| 8196 | value = h->root.u.def.value; | |
| 8197 | else | |
| 8198 | value = sym->st_value; | |
| 8199 | value += rel->r_addend; | |
| 8200 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
| 663a1470 | 8201 | toc_ref_index = (value + toc->output_offset) / 8; |
| 727fc41e AM |
8202 | if (r_type == R_PPC64_TLS |
| 8203 | || r_type == R_PPC64_TLSGD | |
| 8204 | || r_type == R_PPC64_TLSLD) | |
| 102890f0 AM |
8205 | { |
| 8206 | toc_ref[toc_ref_index] = 1; | |
| 8207 | continue; | |
| 8208 | } | |
| 8209 | ||
| 8210 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
| 8211 | continue; | |
| 8212 | ||
| 8213 | tls_set = 0; | |
| 8214 | tls_clear = 0; | |
| 8215 | expecting_tls_get_addr = 2; | |
| 8216 | break; | |
| 8217 | ||
| 8218 | case R_PPC64_TPREL64: | |
| 8219 | if (pass == 0 | |
| 8220 | || sec != toc | |
| 8221 | || toc_ref == NULL | |
| 663a1470 | 8222 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8223 | continue; |
| 8224 | if (ok_tprel) | |
| 8225 | { | |
| 8226 | /* IE -> LE */ | |
| 8227 | tls_set = TLS_EXPLICIT; | |
| 8228 | tls_clear = TLS_TPREL; | |
| 8229 | break; | |
| 8230 | } | |
| 8231 | continue; | |
| 8232 | ||
| 8233 | case R_PPC64_DTPMOD64: | |
| 8234 | if (pass == 0 | |
| 8235 | || sec != toc | |
| 8236 | || toc_ref == NULL | |
| 663a1470 | 8237 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8238 | continue; |
| 8239 | if (rel + 1 < relend | |
| 8240 | && (rel[1].r_info | |
| 8241 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
| 8242 | && rel[1].r_offset == rel->r_offset + 8) | |
| 8243 | { | |
| 8244 | if (ok_tprel) | |
| 8245 | /* GD -> LE */ | |
| 8246 | tls_set = TLS_EXPLICIT | TLS_GD; | |
| 8247 | else | |
| 8248 | /* GD -> IE */ | |
| 8249 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
| 8250 | tls_clear = TLS_GD; | |
| 8251 | } | |
| 8252 | else | |
| 8253 | { | |
| 8254 | if (!is_local) | |
| 8255 | continue; | |
| 8256 | ||
| 8257 | /* LD -> LE */ | |
| 8258 | tls_set = TLS_EXPLICIT; | |
| 8259 | tls_clear = TLS_LD; | |
| 8260 | } | |
| 8261 | break; | |
| 8262 | ||
| 8263 | default: | |
| 8264 | continue; | |
| 8265 | } | |
| 8266 | ||
| 8267 | if (pass == 0) | |
| 8268 | { | |
| 727fc41e AM |
8269 | if (!expecting_tls_get_addr |
| 8270 | || !sec->has_tls_get_addr_call) | |
| 102890f0 AM |
8271 | continue; |
| 8272 | ||
| 3a71aa26 AM |
8273 | if (rel + 1 < relend |
| 8274 | && branch_reloc_hash_match (ibfd, rel + 1, | |
| 8275 | htab->tls_get_addr, | |
| 8276 | htab->tls_get_addr_fd)) | |
| 102890f0 | 8277 | { |
| 3a71aa26 | 8278 | if (expecting_tls_get_addr == 2) |
| 102890f0 | 8279 | { |
| 3a71aa26 | 8280 | /* Check for toc tls entries. */ |
| f961d9dd | 8281 | unsigned char *toc_tls; |
| 3a71aa26 AM |
8282 | int retval; |
| 8283 | ||
| 8284 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
| 8285 | &locsyms, | |
| 8286 | rel, ibfd); | |
| 8287 | if (retval == 0) | |
| 8288 | goto err_free_rel; | |
| 663a1470 AM |
8289 | if (toc_tls != NULL) |
| 8290 | { | |
| 8291 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
| 8292 | found_tls_get_addr_arg = 1; | |
| 8293 | if (retval > 1) | |
| 8294 | toc_ref[toc_ref_index] = 1; | |
| 8295 | } | |
| 102890f0 | 8296 | } |
| 3a71aa26 | 8297 | continue; |
| 102890f0 AM |
8298 | } |
| 8299 | ||
| 8300 | if (expecting_tls_get_addr != 1) | |
| 8301 | continue; | |
| 8302 | ||
| 8303 | /* Uh oh, we didn't find the expected call. We | |
| 8304 | could just mark this symbol to exclude it | |
| 8305 | from tls optimization but it's safer to skip | |
| 663a1470 | 8306 | the entire optimization. */ |
| 25f53a85 | 8307 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
| 663a1470 AM |
8308 | "TLS optimization disabled\n"), |
| 8309 | ibfd, sec, rel->r_offset); | |
| 8310 | ret = TRUE; | |
| 8311 | goto err_free_rel; | |
| 102890f0 AM |
8312 | } |
| 8313 | ||
| 85f7a9cb | 8314 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
| 102890f0 AM |
8315 | { |
| 8316 | struct plt_entry *ent; | |
| 8317 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
| 8318 | ent != NULL; | |
| 8319 | ent = ent->next) | |
| 8320 | if (ent->addend == 0) | |
| 411e1bfb | 8321 | { |
| 102890f0 | 8322 | if (ent->plt.refcount > 0) |
| 30038c59 | 8323 | { |
| 102890f0 AM |
8324 | ent->plt.refcount -= 1; |
| 8325 | expecting_tls_get_addr = 0; | |
| 30038c59 | 8326 | } |
| 102890f0 | 8327 | break; |
| 411e1bfb | 8328 | } |
| 102890f0 | 8329 | } |
| 411e1bfb | 8330 | |
| 85f7a9cb | 8331 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
| 102890f0 AM |
8332 | { |
| 8333 | struct plt_entry *ent; | |
| 8334 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
| 8335 | ent != NULL; | |
| 8336 | ent = ent->next) | |
| 8337 | if (ent->addend == 0) | |
| 411e1bfb | 8338 | { |
| 102890f0 AM |
8339 | if (ent->plt.refcount > 0) |
| 8340 | ent->plt.refcount -= 1; | |
| 8341 | break; | |
| 411e1bfb | 8342 | } |
| 102890f0 | 8343 | } |
| 411e1bfb | 8344 | |
| 102890f0 | 8345 | if (tls_clear == 0) |
| 30038c59 AM |
8346 | continue; |
| 8347 | ||
| 102890f0 AM |
8348 | if ((tls_set & TLS_EXPLICIT) == 0) |
| 8349 | { | |
| 8350 | struct got_entry *ent; | |
| 411e1bfb | 8351 | |
| 102890f0 AM |
8352 | /* Adjust got entry for this reloc. */ |
| 8353 | if (h != NULL) | |
| 8354 | ent = h->got.glist; | |
| 8355 | else | |
| 8356 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
| 411e1bfb | 8357 | |
| 102890f0 AM |
8358 | for (; ent != NULL; ent = ent->next) |
| 8359 | if (ent->addend == rel->r_addend | |
| 8360 | && ent->owner == ibfd | |
| 8361 | && ent->tls_type == tls_type) | |
| 8362 | break; | |
| 8363 | if (ent == NULL) | |
| 8364 | abort (); | |
| 411e1bfb | 8365 | |
| 102890f0 AM |
8366 | if (tls_set == 0) |
| 8367 | { | |
| 8368 | /* We managed to get rid of a got entry. */ | |
| 8369 | if (ent->got.refcount > 0) | |
| 8370 | ent->got.refcount -= 1; | |
| 8371 | } | |
| 8372 | } | |
| 8373 | else | |
| 8374 | { | |
| 8375 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
| 8376 | we'll lose one or two dyn relocs. */ | |
| 8377 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 19e08130 | 8378 | NULL, h, sym)) |
| 102890f0 | 8379 | return FALSE; |
| 411e1bfb | 8380 | |
| 102890f0 AM |
8381 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
| 8382 | { | |
| 8383 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
| 19e08130 | 8384 | NULL, h, sym)) |
| 102890f0 AM |
8385 | return FALSE; |
| 8386 | } | |
| 8387 | } | |
| 411e1bfb | 8388 | |
| 102890f0 AM |
8389 | *tls_mask |= tls_set; |
| 8390 | *tls_mask &= ~tls_clear; | |
| 8391 | } | |
| 8c1d1bb8 | 8392 | |
| 102890f0 AM |
8393 | if (elf_section_data (sec)->relocs != relstart) |
| 8394 | free (relstart); | |
| 8395 | } | |
| 411e1bfb | 8396 | |
| 663a1470 AM |
8397 | if (locsyms != NULL |
| 8398 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
| 8399 | { | |
| 8400 | if (!info->keep_memory) | |
| 8401 | free (locsyms); | |
| 8402 | else | |
| 8403 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
| 8404 | } | |
| 8405 | } | |
| 411e1bfb | 8406 | |
| 663a1470 AM |
8407 | if (toc_ref != NULL) |
| 8408 | free (toc_ref); | |
| b34976b6 | 8409 | return TRUE; |
| 1e2f5b6e | 8410 | } |
| b34976b6 | 8411 | |
| c5614fa4 AM |
8412 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
| 8413 | the values of any global symbols in a toc section that has been | |
| 8414 | edited. Globals in toc sections should be a rarity, so this function | |
| 8415 | sets a flag if any are found in toc sections other than the one just | |
| 8416 | edited, so that futher hash table traversals can be avoided. */ | |
| 8417 | ||
| 8418 | struct adjust_toc_info | |
| 8419 | { | |
| 8420 | asection *toc; | |
| 8421 | unsigned long *skip; | |
| 8422 | bfd_boolean global_toc_syms; | |
| 8423 | }; | |
| 8424 | ||
| ba761f19 AM |
8425 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
| 8426 | ||
| c5614fa4 AM |
8427 | static bfd_boolean |
| 8428 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
| 8429 | { | |
| 8430 | struct ppc_link_hash_entry *eh; | |
| 8431 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
| 854b41e7 | 8432 | unsigned long i; |
| c5614fa4 | 8433 | |
| c5614fa4 AM |
8434 | if (h->root.type != bfd_link_hash_defined |
| 8435 | && h->root.type != bfd_link_hash_defweak) | |
| 8436 | return TRUE; | |
| 8437 | ||
| 8438 | eh = (struct ppc_link_hash_entry *) h; | |
| 8439 | if (eh->adjust_done) | |
| 8440 | return TRUE; | |
| 8441 | ||
| 8442 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
| 8443 | { | |
| 854b41e7 AM |
8444 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
| 8445 | i = toc_inf->toc->rawsize >> 3; | |
| c5614fa4 | 8446 | else |
| 854b41e7 AM |
8447 | i = eh->elf.root.u.def.value >> 3; |
| 8448 | ||
| ba761f19 | 8449 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| c5614fa4 AM |
8450 | { |
| 8451 | (*_bfd_error_handler) | |
| 854b41e7 AM |
8452 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
| 8453 | do | |
| 8454 | ++i; | |
| ba761f19 | 8455 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
| 854b41e7 | 8456 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
| c5614fa4 | 8457 | } |
| 854b41e7 AM |
8458 | |
| 8459 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
| c5614fa4 AM |
8460 | eh->adjust_done = 1; |
| 8461 | } | |
| 8462 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
| 8463 | toc_inf->global_toc_syms = TRUE; | |
| 8464 | ||
| 8465 | return TRUE; | |
| 8466 | } | |
| 8467 | ||
| 560c8763 AM |
8468 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
| 8469 | ||
| 8470 | static bfd_boolean | |
| 8471 | ok_lo_toc_insn (unsigned int insn) | |
| 8472 | { | |
| 8473 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
| 8474 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
| 8475 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
| 8476 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
| 8477 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
| 8478 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
| 8479 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
| 8480 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
| 8481 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
| 8482 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
| 8483 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
| 8484 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
| 8485 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
| 8486 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
| 8487 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
| 8488 | && (insn & 3) != 1) | |
| 8489 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
| 8490 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
| 8491 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
| 8492 | } | |
| 8493 | ||
| c5614fa4 AM |
8494 | /* Examine all relocs referencing .toc sections in order to remove |
| 8495 | unused .toc entries. */ | |
| 8496 | ||
| 8497 | bfd_boolean | |
| 33c0ec9d | 8498 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
| c5614fa4 AM |
8499 | { |
| 8500 | bfd *ibfd; | |
| 8501 | struct adjust_toc_info toc_inf; | |
| 67f0cbdb | 8502 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| c5614fa4 | 8503 | |
| 67f0cbdb | 8504 | htab->do_toc_opt = 1; |
| c5614fa4 AM |
8505 | toc_inf.global_toc_syms = TRUE; |
| 8506 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 8507 | { | |
| 8508 | asection *toc, *sec; | |
| 8509 | Elf_Internal_Shdr *symtab_hdr; | |
| 8510 | Elf_Internal_Sym *local_syms; | |
| 425b145b | 8511 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
| c5614fa4 AM |
8512 | unsigned long *skip, *drop; |
| 8513 | unsigned char *used; | |
| 8514 | unsigned char *keep, last, some_unused; | |
| 8515 | ||
| 854b41e7 AM |
8516 | if (!is_ppc64_elf (ibfd)) |
| 8517 | continue; | |
| 8518 | ||
| c5614fa4 AM |
8519 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
| 8520 | if (toc == NULL | |
| 92b7a70f | 8521 | || toc->size == 0 |
| dbaa2011 AM |
8522 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
| 8523 | || discarded_section (toc)) | |
| c5614fa4 AM |
8524 | continue; |
| 8525 | ||
| 425b145b | 8526 | toc_relocs = NULL; |
| c5614fa4 | 8527 | local_syms = NULL; |
| 0ffa91dd | 8528 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| c5614fa4 AM |
8529 | |
| 8530 | /* Look at sections dropped from the final link. */ | |
| 8531 | skip = NULL; | |
| 8532 | relstart = NULL; | |
| 8533 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 8534 | { | |
| 8535 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8536 | || !discarded_section (sec) |
| c5614fa4 AM |
8537 | || get_opd_info (sec) |
| 8538 | || (sec->flags & SEC_ALLOC) == 0 | |
| 8539 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 8540 | continue; | |
| 8541 | ||
| 8542 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
| 8543 | if (relstart == NULL) | |
| 8544 | goto error_ret; | |
| 8545 | ||
| 8546 | /* Run through the relocs to see which toc entries might be | |
| 8547 | unused. */ | |
| 8548 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8549 | { | |
| 8550 | enum elf_ppc64_reloc_type r_type; | |
| 8551 | unsigned long r_symndx; | |
| 8552 | asection *sym_sec; | |
| 8553 | struct elf_link_hash_entry *h; | |
| 8554 | Elf_Internal_Sym *sym; | |
| 8555 | bfd_vma val; | |
| 8556 | ||
| 8557 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8558 | switch (r_type) | |
| 8559 | { | |
| 8560 | default: | |
| 8561 | continue; | |
| 8562 | ||
| 8563 | case R_PPC64_TOC16: | |
| 8564 | case R_PPC64_TOC16_LO: | |
| 8565 | case R_PPC64_TOC16_HI: | |
| 8566 | case R_PPC64_TOC16_HA: | |
| 8567 | case R_PPC64_TOC16_DS: | |
| 8568 | case R_PPC64_TOC16_LO_DS: | |
| 8569 | break; | |
| 8570 | } | |
| 8571 | ||
| 8572 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8573 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8574 | r_symndx, ibfd)) | |
| 8575 | goto error_ret; | |
| 8576 | ||
| 8577 | if (sym_sec != toc) | |
| 8578 | continue; | |
| 8579 | ||
| 8580 | if (h != NULL) | |
| 8581 | val = h->root.u.def.value; | |
| 8582 | else | |
| 8583 | val = sym->st_value; | |
| 8584 | val += rel->r_addend; | |
| 8585 | ||
| 8586 | if (val >= toc->size) | |
| 8587 | continue; | |
| 8588 | ||
| 8589 | /* Anything in the toc ought to be aligned to 8 bytes. | |
| 8590 | If not, don't mark as unused. */ | |
| 8591 | if (val & 7) | |
| 8592 | continue; | |
| 8593 | ||
| 8594 | if (skip == NULL) | |
| 8595 | { | |
| 854b41e7 | 8596 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
| c5614fa4 AM |
8597 | if (skip == NULL) |
| 8598 | goto error_ret; | |
| 8599 | } | |
| 8600 | ||
| ba761f19 | 8601 | skip[val >> 3] = ref_from_discarded; |
| c5614fa4 AM |
8602 | } |
| 8603 | ||
| 8604 | if (elf_section_data (sec)->relocs != relstart) | |
| 8605 | free (relstart); | |
| 8606 | } | |
| 8607 | ||
| ba761f19 AM |
8608 | /* For largetoc loads of address constants, we can convert |
| 8609 | . addis rx,2,addr@got@ha | |
| 8610 | . ld ry,addr@got@l(rx) | |
| 8611 | to | |
| 8612 | . addis rx,2,addr@toc@ha | |
| 8613 | . addi ry,rx,addr@toc@l | |
| 8614 | when addr is within 2G of the toc pointer. This then means | |
| 8615 | that the word storing "addr" in the toc is no longer needed. */ | |
| 68ffbac6 | 8616 | |
| ba761f19 AM |
8617 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
| 8618 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
| 8619 | && toc->reloc_count != 0) | |
| 8620 | { | |
| 8621 | /* Read toc relocs. */ | |
| 425b145b AM |
8622 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
| 8623 | info->keep_memory); | |
| 8624 | if (toc_relocs == NULL) | |
| ba761f19 AM |
8625 | goto error_ret; |
| 8626 | ||
| 425b145b | 8627 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
| ba761f19 AM |
8628 | { |
| 8629 | enum elf_ppc64_reloc_type r_type; | |
| 8630 | unsigned long r_symndx; | |
| 8631 | asection *sym_sec; | |
| 8632 | struct elf_link_hash_entry *h; | |
| 8633 | Elf_Internal_Sym *sym; | |
| 8634 | bfd_vma val, addr; | |
| 8635 | ||
| 8636 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8637 | if (r_type != R_PPC64_ADDR64) | |
| 8638 | continue; | |
| 8639 | ||
| 8640 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8641 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8642 | r_symndx, ibfd)) | |
| 8643 | goto error_ret; | |
| 8644 | ||
| 425b145b | 8645 | if (sym_sec == NULL |
| dbaa2011 | 8646 | || discarded_section (sym_sec)) |
| 425b145b AM |
8647 | continue; |
| 8648 | ||
| 726d3ab0 | 8649 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
| ba761f19 AM |
8650 | continue; |
| 8651 | ||
| 8652 | if (h != NULL) | |
| bddc25c9 AM |
8653 | { |
| 8654 | if (h->type == STT_GNU_IFUNC) | |
| 8655 | continue; | |
| 8656 | val = h->root.u.def.value; | |
| 8657 | } | |
| ba761f19 | 8658 | else |
| bddc25c9 AM |
8659 | { |
| 8660 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 8661 | continue; | |
| 8662 | val = sym->st_value; | |
| 8663 | } | |
| ba761f19 AM |
8664 | val += rel->r_addend; |
| 8665 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
| 8666 | ||
| 8667 | /* We don't yet know the exact toc pointer value, but we | |
| 8668 | know it will be somewhere in the toc section. Don't | |
| 8669 | optimize if the difference from any possible toc | |
| 8670 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
| 8671 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
| 8672 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 8673 | continue; | |
| 8674 | ||
| 8675 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
| 8676 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 8677 | continue; | |
| 8678 | ||
| 8679 | if (skip == NULL) | |
| 8680 | { | |
| 8681 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
| 8682 | if (skip == NULL) | |
| 8683 | goto error_ret; | |
| 8684 | } | |
| 8685 | ||
| 8686 | skip[rel->r_offset >> 3] | |
| 425b145b | 8687 | |= can_optimize | ((rel - toc_relocs) << 2); |
| ba761f19 | 8688 | } |
| ba761f19 AM |
8689 | } |
| 8690 | ||
| c5614fa4 AM |
8691 | if (skip == NULL) |
| 8692 | continue; | |
| 8693 | ||
| 8694 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
| 8695 | if (used == NULL) | |
| 8696 | { | |
| 8697 | error_ret: | |
| 8698 | if (local_syms != NULL | |
| 8699 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 8700 | free (local_syms); | |
| 8701 | if (sec != NULL | |
| 8702 | && relstart != NULL | |
| 8703 | && elf_section_data (sec)->relocs != relstart) | |
| 8704 | free (relstart); | |
| 425b145b AM |
8705 | if (toc_relocs != NULL |
| 8706 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 8707 | free (toc_relocs); | |
| c5614fa4 AM |
8708 | if (skip != NULL) |
| 8709 | free (skip); | |
| 8710 | return FALSE; | |
| 8711 | } | |
| 8712 | ||
| 30038c59 AM |
8713 | /* Now check all kept sections that might reference the toc. |
| 8714 | Check the toc itself last. */ | |
| 8715 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
| 8716 | : ibfd->sections); | |
| c5614fa4 | 8717 | sec != NULL; |
| c5614fa4 | 8718 | sec = (sec == toc ? NULL |
| c5614fa4 | 8719 | : sec->next == NULL ? toc |
| 30038c59 | 8720 | : sec->next == toc && toc->next ? toc->next |
| c5614fa4 AM |
8721 | : sec->next)) |
| 8722 | { | |
| 8723 | int repeat; | |
| 8724 | ||
| 8725 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8726 | || discarded_section (sec) |
| c5614fa4 AM |
8727 | || get_opd_info (sec) |
| 8728 | || (sec->flags & SEC_ALLOC) == 0 | |
| 8729 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 8730 | continue; | |
| 8731 | ||
| 854b41e7 AM |
8732 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 8733 | info->keep_memory); | |
| c5614fa4 AM |
8734 | if (relstart == NULL) |
| 8735 | goto error_ret; | |
| 8736 | ||
| 8737 | /* Mark toc entries referenced as used. */ | |
| c5614fa4 | 8738 | do |
| d4f1ee75 AM |
8739 | { |
| 8740 | repeat = 0; | |
| 8741 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8742 | { | |
| 8743 | enum elf_ppc64_reloc_type r_type; | |
| 8744 | unsigned long r_symndx; | |
| 8745 | asection *sym_sec; | |
| 8746 | struct elf_link_hash_entry *h; | |
| 8747 | Elf_Internal_Sym *sym; | |
| 8748 | bfd_vma val; | |
| 8749 | enum {no_check, check_lo, check_ha} insn_check; | |
| 98528052 | 8750 | |
| d4f1ee75 AM |
8751 | r_type = ELF64_R_TYPE (rel->r_info); |
| 8752 | switch (r_type) | |
| 8753 | { | |
| 8754 | default: | |
| 8755 | insn_check = no_check; | |
| 8756 | break; | |
| 98528052 | 8757 | |
| d4f1ee75 AM |
8758 | case R_PPC64_GOT_TLSLD16_HA: |
| 8759 | case R_PPC64_GOT_TLSGD16_HA: | |
| 8760 | case R_PPC64_GOT_TPREL16_HA: | |
| 8761 | case R_PPC64_GOT_DTPREL16_HA: | |
| 8762 | case R_PPC64_GOT16_HA: | |
| 8763 | case R_PPC64_TOC16_HA: | |
| 8764 | insn_check = check_ha; | |
| 8765 | break; | |
| 98528052 | 8766 | |
| d4f1ee75 AM |
8767 | case R_PPC64_GOT_TLSLD16_LO: |
| 8768 | case R_PPC64_GOT_TLSGD16_LO: | |
| 8769 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 8770 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 8771 | case R_PPC64_GOT16_LO: | |
| 8772 | case R_PPC64_GOT16_LO_DS: | |
| 8773 | case R_PPC64_TOC16_LO: | |
| 8774 | case R_PPC64_TOC16_LO_DS: | |
| 8775 | insn_check = check_lo; | |
| 8776 | break; | |
| 8777 | } | |
| 560c8763 | 8778 | |
| d4f1ee75 AM |
8779 | if (insn_check != no_check) |
| 8780 | { | |
| 8781 | bfd_vma off = rel->r_offset & ~3; | |
| 8782 | unsigned char buf[4]; | |
| 8783 | unsigned int insn; | |
| c5614fa4 | 8784 | |
| d4f1ee75 AM |
8785 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
| 8786 | { | |
| 8787 | free (used); | |
| 8788 | goto error_ret; | |
| 8789 | } | |
| 8790 | insn = bfd_get_32 (ibfd, buf); | |
| 8791 | if (insn_check == check_lo | |
| 8792 | ? !ok_lo_toc_insn (insn) | |
| 8793 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
| 8794 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
| 8795 | { | |
| 8796 | char str[12]; | |
| 8797 | ||
| 8798 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
| 8799 | sprintf (str, "%#08x", insn); | |
| 8800 | info->callbacks->einfo | |
| 8801 | (_("%P: %H: toc optimization is not supported for" | |
| 8802 | " %s instruction.\n"), | |
| 8803 | ibfd, sec, rel->r_offset & ~3, str); | |
| 8804 | } | |
| 8805 | } | |
| c5614fa4 | 8806 | |
| d4f1ee75 AM |
8807 | switch (r_type) |
| 8808 | { | |
| 8809 | case R_PPC64_TOC16: | |
| 8810 | case R_PPC64_TOC16_LO: | |
| 8811 | case R_PPC64_TOC16_HI: | |
| 8812 | case R_PPC64_TOC16_HA: | |
| 8813 | case R_PPC64_TOC16_DS: | |
| 8814 | case R_PPC64_TOC16_LO_DS: | |
| 8815 | /* In case we're taking addresses of toc entries. */ | |
| 8816 | case R_PPC64_ADDR64: | |
| 8817 | break; | |
| c5614fa4 | 8818 | |
| d4f1ee75 AM |
8819 | default: |
| 8820 | continue; | |
| 8821 | } | |
| c5614fa4 | 8822 | |
| d4f1ee75 AM |
8823 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8824 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8825 | r_symndx, ibfd)) | |
| 8826 | { | |
| 8827 | free (used); | |
| 8828 | goto error_ret; | |
| 8829 | } | |
| c5614fa4 | 8830 | |
| d4f1ee75 AM |
8831 | if (sym_sec != toc) |
| 8832 | continue; | |
| c5614fa4 | 8833 | |
| d4f1ee75 AM |
8834 | if (h != NULL) |
| 8835 | val = h->root.u.def.value; | |
| 8836 | else | |
| 8837 | val = sym->st_value; | |
| 8838 | val += rel->r_addend; | |
| ba761f19 | 8839 | |
| d4f1ee75 AM |
8840 | if (val >= toc->size) |
| 8841 | continue; | |
| ba761f19 | 8842 | |
| d4f1ee75 AM |
8843 | if ((skip[val >> 3] & can_optimize) != 0) |
| 8844 | { | |
| 8845 | bfd_vma off; | |
| 8846 | unsigned char opc; | |
| 8847 | ||
| 8848 | switch (r_type) | |
| 8849 | { | |
| 8850 | case R_PPC64_TOC16_HA: | |
| ba761f19 | 8851 | break; |
| ba761f19 | 8852 | |
| d4f1ee75 AM |
8853 | case R_PPC64_TOC16_LO_DS: |
| 8854 | off = rel->r_offset; | |
| 8855 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
| 8856 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
| 8857 | off, 1)) | |
| 8858 | { | |
| 8859 | free (used); | |
| 8860 | goto error_ret; | |
| 8861 | } | |
| 8862 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
| 8863 | break; | |
| 8864 | /* Fall thru */ | |
| ba761f19 | 8865 | |
| d4f1ee75 AM |
8866 | default: |
| 8867 | /* Wrong sort of reloc, or not a ld. We may | |
| 8868 | as well clear ref_from_discarded too. */ | |
| 8869 | skip[val >> 3] = 0; | |
| 8870 | } | |
| 8871 | } | |
| 8872 | ||
| 8873 | if (sec != toc) | |
| 8874 | used[val >> 3] = 1; | |
| 8875 | /* For the toc section, we only mark as used if this | |
| 8876 | entry itself isn't unused. */ | |
| 8877 | else if ((used[rel->r_offset >> 3] | |
| 8878 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
| 8879 | && !used[val >> 3]) | |
| 8880 | { | |
| 8881 | /* Do all the relocs again, to catch reference | |
| 8882 | chains. */ | |
| 8883 | repeat = 1; | |
| 8884 | used[val >> 3] = 1; | |
| 8885 | } | |
| 8886 | } | |
| 8887 | } | |
| c5614fa4 | 8888 | while (repeat); |
| 854b41e7 AM |
8889 | |
| 8890 | if (elf_section_data (sec)->relocs != relstart) | |
| 8891 | free (relstart); | |
| c5614fa4 AM |
8892 | } |
| 8893 | ||
| 8894 | /* Merge the used and skip arrays. Assume that TOC | |
| 8895 | doublewords not appearing as either used or unused belong | |
| 8896 | to to an entry more than one doubleword in size. */ | |
| 8897 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
| 8898 | drop < skip + (toc->size + 7) / 8; | |
| 8899 | ++drop, ++keep) | |
| 8900 | { | |
| 8901 | if (*keep) | |
| 8902 | { | |
| ba761f19 AM |
8903 | *drop &= ~ref_from_discarded; |
| 8904 | if ((*drop & can_optimize) != 0) | |
| 8905 | some_unused = 1; | |
| c5614fa4 AM |
8906 | last = 0; |
| 8907 | } | |
| b140b010 | 8908 | else if ((*drop & ref_from_discarded) != 0) |
| c5614fa4 AM |
8909 | { |
| 8910 | some_unused = 1; | |
| ba761f19 | 8911 | last = ref_from_discarded; |
| c5614fa4 AM |
8912 | } |
| 8913 | else | |
| 8914 | *drop = last; | |
| 8915 | } | |
| 8916 | ||
| 8917 | free (used); | |
| 8918 | ||
| 8919 | if (some_unused) | |
| 8920 | { | |
| 8921 | bfd_byte *contents, *src; | |
| 8922 | unsigned long off; | |
| d62b3684 | 8923 | Elf_Internal_Sym *sym; |
| ba761f19 | 8924 | bfd_boolean local_toc_syms = FALSE; |
| c5614fa4 AM |
8925 | |
| 8926 | /* Shuffle the toc contents, and at the same time convert the | |
| 8927 | skip array from booleans into offsets. */ | |
| 8928 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
| 8929 | goto error_ret; | |
| 8930 | ||
| 8931 | elf_section_data (toc)->this_hdr.contents = contents; | |
| 8932 | ||
| 8933 | for (src = contents, off = 0, drop = skip; | |
| 8934 | src < contents + toc->size; | |
| 8935 | src += 8, ++drop) | |
| 8936 | { | |
| ba761f19 AM |
8937 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
| 8938 | off += 8; | |
| c5614fa4 AM |
8939 | else if (off != 0) |
| 8940 | { | |
| 8941 | *drop = off; | |
| 8942 | memcpy (src - off, src, 8); | |
| 8943 | } | |
| 8944 | } | |
| 854b41e7 | 8945 | *drop = off; |
| c5614fa4 AM |
8946 | toc->rawsize = toc->size; |
| 8947 | toc->size = src - contents - off; | |
| 8948 | ||
| ba761f19 AM |
8949 | /* Adjust addends for relocs against the toc section sym, |
| 8950 | and optimize any accesses we can. */ | |
| c5614fa4 AM |
8951 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 8952 | { | |
| 8953 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8954 | || discarded_section (sec)) |
| c5614fa4 AM |
8955 | continue; |
| 8956 | ||
| 8957 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 854b41e7 | 8958 | info->keep_memory); |
| c5614fa4 AM |
8959 | if (relstart == NULL) |
| 8960 | goto error_ret; | |
| 8961 | ||
| 8962 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8963 | { | |
| 8964 | enum elf_ppc64_reloc_type r_type; | |
| 8965 | unsigned long r_symndx; | |
| 8966 | asection *sym_sec; | |
| 8967 | struct elf_link_hash_entry *h; | |
| 854b41e7 | 8968 | bfd_vma val; |
| c5614fa4 AM |
8969 | |
| 8970 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8971 | switch (r_type) | |
| 8972 | { | |
| 8973 | default: | |
| 8974 | continue; | |
| 8975 | ||
| 8976 | case R_PPC64_TOC16: | |
| 8977 | case R_PPC64_TOC16_LO: | |
| 8978 | case R_PPC64_TOC16_HI: | |
| 8979 | case R_PPC64_TOC16_HA: | |
| 8980 | case R_PPC64_TOC16_DS: | |
| 8981 | case R_PPC64_TOC16_LO_DS: | |
| 8982 | case R_PPC64_ADDR64: | |
| 8983 | break; | |
| 8984 | } | |
| 8985 | ||
| 8986 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8987 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8988 | r_symndx, ibfd)) | |
| 8989 | goto error_ret; | |
| 8990 | ||
| ba761f19 | 8991 | if (sym_sec != toc) |
| c5614fa4 AM |
8992 | continue; |
| 8993 | ||
| ba761f19 AM |
8994 | if (h != NULL) |
| 8995 | val = h->root.u.def.value; | |
| 8996 | else | |
| 8997 | { | |
| 8998 | val = sym->st_value; | |
| 8999 | if (val != 0) | |
| 9000 | local_toc_syms = TRUE; | |
| 9001 | } | |
| 9002 | ||
| 9003 | val += rel->r_addend; | |
| 854b41e7 AM |
9004 | |
| 9005 | if (val > toc->rawsize) | |
| 9006 | val = toc->rawsize; | |
| ba761f19 AM |
9007 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
| 9008 | continue; | |
| 9009 | else if ((skip[val >> 3] & can_optimize) != 0) | |
| 9010 | { | |
| 9011 | Elf_Internal_Rela *tocrel | |
| 425b145b | 9012 | = toc_relocs + (skip[val >> 3] >> 2); |
| ba761f19 AM |
9013 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
| 9014 | ||
| 9015 | switch (r_type) | |
| 9016 | { | |
| 9017 | case R_PPC64_TOC16_HA: | |
| 9018 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
| 9019 | break; | |
| 9020 | ||
| 9021 | case R_PPC64_TOC16_LO_DS: | |
| 9022 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
| 9023 | break; | |
| 9024 | ||
| 9025 | default: | |
| 28942f62 AM |
9026 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 9027 | ppc_howto_init (); | |
| b140b010 | 9028 | info->callbacks->einfo |
| bc30df16 | 9029 | (_("%P: %H: %s references " |
| b140b010 AM |
9030 | "optimized away TOC entry\n"), |
| 9031 | ibfd, sec, rel->r_offset, | |
| 9032 | ppc64_elf_howto_table[r_type]->name); | |
| 9033 | bfd_set_error (bfd_error_bad_value); | |
| 9034 | goto error_ret; | |
| ba761f19 AM |
9035 | } |
| 9036 | rel->r_addend = tocrel->r_addend; | |
| 9037 | elf_section_data (sec)->relocs = relstart; | |
| 9038 | continue; | |
| 9039 | } | |
| 9040 | ||
| 9041 | if (h != NULL || sym->st_value != 0) | |
| 9042 | continue; | |
| 854b41e7 AM |
9043 | |
| 9044 | rel->r_addend -= skip[val >> 3]; | |
| 9045 | elf_section_data (sec)->relocs = relstart; | |
| c5614fa4 | 9046 | } |
| 854b41e7 AM |
9047 | |
| 9048 | if (elf_section_data (sec)->relocs != relstart) | |
| 9049 | free (relstart); | |
| c5614fa4 AM |
9050 | } |
| 9051 | ||
| 9052 | /* We shouldn't have local or global symbols defined in the TOC, | |
| 9053 | but handle them anyway. */ | |
| df22d223 AM |
9054 | if (local_syms != NULL) |
| 9055 | for (sym = local_syms; | |
| 9056 | sym < local_syms + symtab_hdr->sh_info; | |
| 9057 | ++sym) | |
| 9058 | if (sym->st_value != 0 | |
| 9059 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
| 9060 | { | |
| 9061 | unsigned long i; | |
| 854b41e7 | 9062 | |
| df22d223 AM |
9063 | if (sym->st_value > toc->rawsize) |
| 9064 | i = toc->rawsize >> 3; | |
| 9065 | else | |
| 9066 | i = sym->st_value >> 3; | |
| 854b41e7 | 9067 | |
| df22d223 AM |
9068 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| 9069 | { | |
| 9070 | if (local_toc_syms) | |
| 9071 | (*_bfd_error_handler) | |
| 9072 | (_("%s defined on removed toc entry"), | |
| 9073 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
| 9074 | do | |
| 9075 | ++i; | |
| 9076 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
| 9077 | sym->st_value = (bfd_vma) i << 3; | |
| 9078 | } | |
| d62b3684 | 9079 | |
| df22d223 AM |
9080 | sym->st_value -= skip[i]; |
| 9081 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9082 | } | |
| c5614fa4 | 9083 | |
| 854b41e7 | 9084 | /* Adjust any global syms defined in this toc input section. */ |
| c5614fa4 AM |
9085 | if (toc_inf.global_toc_syms) |
| 9086 | { | |
| 9087 | toc_inf.toc = toc; | |
| 9088 | toc_inf.skip = skip; | |
| 9089 | toc_inf.global_toc_syms = FALSE; | |
| 9090 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
| 9091 | &toc_inf); | |
| 9092 | } | |
| 854b41e7 AM |
9093 | |
| 9094 | if (toc->reloc_count != 0) | |
| 9095 | { | |
| d4730f92 | 9096 | Elf_Internal_Shdr *rel_hdr; |
| 854b41e7 AM |
9097 | Elf_Internal_Rela *wrel; |
| 9098 | bfd_size_type sz; | |
| 9099 | ||
| 854b41e7 | 9100 | /* Remove unused toc relocs, and adjust those we keep. */ |
| 28be611c AM |
9101 | if (toc_relocs == NULL) |
| 9102 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
| 9103 | info->keep_memory); | |
| 9104 | if (toc_relocs == NULL) | |
| 9105 | goto error_ret; | |
| 9106 | ||
| 425b145b AM |
9107 | wrel = toc_relocs; |
| 9108 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
| ba761f19 AM |
9109 | if ((skip[rel->r_offset >> 3] |
| 9110 | & (ref_from_discarded | can_optimize)) == 0) | |
| 854b41e7 AM |
9111 | { |
| 9112 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
| 9113 | wrel->r_info = rel->r_info; | |
| 9114 | wrel->r_addend = rel->r_addend; | |
| 9115 | ++wrel; | |
| 9116 | } | |
| 9117 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
| 9118 | &local_syms, NULL, NULL)) | |
| 9119 | goto error_ret; | |
| 9120 | ||
| 425b145b AM |
9121 | elf_section_data (toc)->relocs = toc_relocs; |
| 9122 | toc->reloc_count = wrel - toc_relocs; | |
| d4730f92 BS |
9123 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
| 9124 | sz = rel_hdr->sh_entsize; | |
| 9125 | rel_hdr->sh_size = toc->reloc_count * sz; | |
| 854b41e7 | 9126 | } |
| c5614fa4 | 9127 | } |
| 28be611c AM |
9128 | else if (toc_relocs != NULL |
| 9129 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 425b145b | 9130 | free (toc_relocs); |
| c5614fa4 AM |
9131 | |
| 9132 | if (local_syms != NULL | |
| 9133 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 9134 | { | |
| 9135 | if (!info->keep_memory) | |
| 9136 | free (local_syms); | |
| 9137 | else | |
| 9138 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9139 | } | |
| 9140 | free (skip); | |
| 9141 | } | |
| 9142 | ||
| 9143 | return TRUE; | |
| 9144 | } | |
| 9145 | ||
| 1bbe0902 AM |
9146 | /* Return true iff input section I references the TOC using |
| 9147 | instructions limited to +/-32k offsets. */ | |
| 9148 | ||
| 9149 | bfd_boolean | |
| 9150 | ppc64_elf_has_small_toc_reloc (asection *i) | |
| 9151 | { | |
| 9152 | return (is_ppc64_elf (i->owner) | |
| 9153 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
| 9154 | } | |
| 9155 | ||
| 927be08e AM |
9156 | /* Allocate space for one GOT entry. */ |
| 9157 | ||
| 9158 | static void | |
| 9159 | allocate_got (struct elf_link_hash_entry *h, | |
| 9160 | struct bfd_link_info *info, | |
| 9161 | struct got_entry *gent) | |
| 9162 | { | |
| 9163 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9164 | bfd_boolean dyn; | |
| 9165 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| 9166 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
| 9167 | ? 16 : 8); | |
| 9168 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
| 9169 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
| 9170 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
| 9171 | ||
| 9172 | gent->got.offset = got->size; | |
| 9173 | got->size += entsize; | |
| 9174 | ||
| 9175 | dyn = htab->elf.dynamic_sections_created; | |
| 19e08130 | 9176 | if (h->type == STT_GNU_IFUNC) |
| 927be08e | 9177 | { |
| 19e08130 AM |
9178 | htab->reliplt->size += rentsize; |
| 9179 | htab->got_reli_size += rentsize; | |
| 927be08e | 9180 | } |
| 19e08130 AM |
9181 | else if ((info->shared |
| 9182 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
| 9183 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 9184 | || h->root.type != bfd_link_hash_undefweak)) | |
| 927be08e | 9185 | { |
| 19e08130 | 9186 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
| 927be08e | 9187 | relgot->size += rentsize; |
| 927be08e AM |
9188 | } |
| 9189 | } | |
| 9190 | ||
| 7865406b AM |
9191 | /* This function merges got entries in the same toc group. */ |
| 9192 | ||
| 9193 | static void | |
| 9194 | merge_got_entries (struct got_entry **pent) | |
| 9195 | { | |
| 9196 | struct got_entry *ent, *ent2; | |
| 9197 | ||
| 9198 | for (ent = *pent; ent != NULL; ent = ent->next) | |
| 9199 | if (!ent->is_indirect) | |
| 9200 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
| 9201 | if (!ent2->is_indirect | |
| 9202 | && ent2->addend == ent->addend | |
| 9203 | && ent2->tls_type == ent->tls_type | |
| 9204 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
| 9205 | { | |
| 9206 | ent2->is_indirect = TRUE; | |
| 9207 | ent2->got.ent = ent; | |
| 9208 | } | |
| 9209 | } | |
| 9210 | ||
| 65f38f15 AM |
9211 | /* Allocate space in .plt, .got and associated reloc sections for |
| 9212 | dynamic relocs. */ | |
| 5bd4f169 | 9213 | |
| b34976b6 | 9214 | static bfd_boolean |
| 4ce794b7 | 9215 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 9216 | { |
| 65f38f15 AM |
9217 | struct bfd_link_info *info; |
| 9218 | struct ppc_link_hash_table *htab; | |
| 5bd4f169 | 9219 | asection *s; |
| 65f38f15 | 9220 | struct ppc_link_hash_entry *eh; |
| 6061a67d | 9221 | struct elf_dyn_relocs *p; |
| 0b8bcf0d | 9222 | struct got_entry **pgent, *gent; |
| 5bd4f169 | 9223 | |
| e92d460e | 9224 | if (h->root.type == bfd_link_hash_indirect) |
| b34976b6 | 9225 | return TRUE; |
| 5bd4f169 | 9226 | |
| 65f38f15 AM |
9227 | info = (struct bfd_link_info *) inf; |
| 9228 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9229 | if (htab == NULL) |
| 9230 | return FALSE; | |
| 5bd4f169 | 9231 | |
| e054468f AM |
9232 | if ((htab->elf.dynamic_sections_created |
| 9233 | && h->dynindx != -1 | |
| 9234 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
| 9235 | || h->type == STT_GNU_IFUNC) | |
| 5bd4f169 | 9236 | { |
| 411e1bfb AM |
9237 | struct plt_entry *pent; |
| 9238 | bfd_boolean doneone = FALSE; | |
| 9239 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 9240 | if (pent->plt.refcount > 0) | |
| 9241 | { | |
| 25f23106 AM |
9242 | if (!htab->elf.dynamic_sections_created |
| 9243 | || h->dynindx == -1) | |
| e054468f AM |
9244 | { |
| 9245 | s = htab->iplt; | |
| 9246 | pent->plt.offset = s->size; | |
| b9e5796b | 9247 | s->size += PLT_ENTRY_SIZE (htab); |
| e054468f AM |
9248 | s = htab->reliplt; |
| 9249 | } | |
| 9250 | else | |
| 9251 | { | |
| 9252 | /* If this is the first .plt entry, make room for the special | |
| 9253 | first entry. */ | |
| 9254 | s = htab->plt; | |
| 9255 | if (s->size == 0) | |
| b9e5796b | 9256 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
| e054468f AM |
9257 | |
| 9258 | pent->plt.offset = s->size; | |
| 9259 | ||
| 9260 | /* Make room for this entry. */ | |
| b9e5796b | 9261 | s->size += PLT_ENTRY_SIZE (htab); |
| e054468f AM |
9262 | |
| 9263 | /* Make room for the .glink code. */ | |
| 9264 | s = htab->glink; | |
| 9265 | if (s->size == 0) | |
| 9266 | s->size += GLINK_CALL_STUB_SIZE; | |
| b9e5796b AM |
9267 | if (htab->opd_abi) |
| 9268 | { | |
| 9269 | /* We need bigger stubs past index 32767. */ | |
| 9270 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
| 9271 | s->size += 4; | |
| 9272 | s->size += 2*4; | |
| 9273 | } | |
| 9274 | else | |
| e054468f | 9275 | s->size += 4; |
| e054468f AM |
9276 | |
| 9277 | /* We also need to make an entry in the .rela.plt section. */ | |
| 9278 | s = htab->relplt; | |
| 9279 | } | |
| eea6121a | 9280 | s->size += sizeof (Elf64_External_Rela); |
| 411e1bfb AM |
9281 | doneone = TRUE; |
| 9282 | } | |
| 9283 | else | |
| 9284 | pent->plt.offset = (bfd_vma) -1; | |
| 9285 | if (!doneone) | |
| 65f38f15 | 9286 | { |
| 411e1bfb | 9287 | h->plt.plist = NULL; |
| f5385ebf | 9288 | h->needs_plt = 0; |
| 65f38f15 AM |
9289 | } |
| 9290 | } | |
| 9291 | else | |
| 9292 | { | |
| 411e1bfb | 9293 | h->plt.plist = NULL; |
| f5385ebf | 9294 | h->needs_plt = 0; |
| 65f38f15 AM |
9295 | } |
| 9296 | ||
| 951fd09b AM |
9297 | eh = (struct ppc_link_hash_entry *) h; |
| 9298 | /* Run through the TLS GD got entries first if we're changing them | |
| 9299 | to TPREL. */ | |
| e7b938ca | 9300 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
| 951fd09b AM |
9301 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 9302 | if (gent->got.refcount > 0 | |
| 9303 | && (gent->tls_type & TLS_GD) != 0) | |
| 9304 | { | |
| 9305 | /* This was a GD entry that has been converted to TPREL. If | |
| 9306 | there happens to be a TPREL entry we can use that one. */ | |
| 9307 | struct got_entry *ent; | |
| 9308 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
| 9309 | if (ent->got.refcount > 0 | |
| 9310 | && (ent->tls_type & TLS_TPREL) != 0 | |
| e717da7e AM |
9311 | && ent->addend == gent->addend |
| 9312 | && ent->owner == gent->owner) | |
| 951fd09b AM |
9313 | { |
| 9314 | gent->got.refcount = 0; | |
| 9315 | break; | |
| 9316 | } | |
| 9317 | ||
| 9318 | /* If not, then we'll be using our own TPREL entry. */ | |
| 9319 | if (gent->got.refcount != 0) | |
| 9320 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
| 9321 | } | |
| 9322 | ||
| 7865406b AM |
9323 | /* Remove any list entry that won't generate a word in the GOT before |
| 9324 | we call merge_got_entries. Otherwise we risk merging to empty | |
| 9325 | entries. */ | |
| 0b8bcf0d AM |
9326 | pgent = &h->got.glist; |
| 9327 | while ((gent = *pgent) != NULL) | |
| 411e1bfb | 9328 | if (gent->got.refcount > 0) |
| 7865406b AM |
9329 | { |
| 9330 | if ((gent->tls_type & TLS_LD) != 0 | |
| 9331 | && !h->def_dynamic) | |
| 9332 | { | |
| 9333 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
| 9334 | *pgent = gent->next; | |
| 9335 | } | |
| 9336 | else | |
| 9337 | pgent = &gent->next; | |
| 9338 | } | |
| 9339 | else | |
| 9340 | *pgent = gent->next; | |
| 9341 | ||
| 9342 | if (!htab->do_multi_toc) | |
| 9343 | merge_got_entries (&h->got.glist); | |
| 9344 | ||
| 9345 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
| 9346 | if (!gent->is_indirect) | |
| 411e1bfb AM |
9347 | { |
| 9348 | /* Make sure this symbol is output as a dynamic symbol. | |
| 951fd09b AM |
9349 | Undefined weak syms won't yet be marked as dynamic, |
| 9350 | nor will all TLS symbols. */ | |
| 411e1bfb | 9351 | if (h->dynindx == -1 |
| b099ab9f | 9352 | && !h->forced_local |
| 25f23106 | 9353 | && h->type != STT_GNU_IFUNC |
| b099ab9f | 9354 | && htab->elf.dynamic_sections_created) |
| 411e1bfb | 9355 | { |
| c152c796 | 9356 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 411e1bfb AM |
9357 | return FALSE; |
| 9358 | } | |
| 65f38f15 | 9359 | |
| 0c8d6e5c | 9360 | if (!is_ppc64_elf (gent->owner)) |
| 927be08e | 9361 | abort (); |
| 0ffa91dd | 9362 | |
| 927be08e | 9363 | allocate_got (h, info, gent); |
| 411e1bfb | 9364 | } |
| 65f38f15 | 9365 | |
| b099ab9f | 9366 | if (eh->dyn_relocs == NULL |
| 25f23106 AM |
9367 | || (!htab->elf.dynamic_sections_created |
| 9368 | && h->type != STT_GNU_IFUNC)) | |
| b34976b6 | 9369 | return TRUE; |
| 65f38f15 AM |
9370 | |
| 9371 | /* In the shared -Bsymbolic case, discard space allocated for | |
| 9372 | dynamic pc-relative relocs against symbols which turn out to be | |
| 9373 | defined in regular objects. For the normal shared case, discard | |
| 9374 | space for relocs that have become local due to symbol visibility | |
| 9375 | changes. */ | |
| 9376 | ||
| 9377 | if (info->shared) | |
| 9378 | { | |
| 9c7a29a3 | 9379 | /* Relocs that use pc_count are those that appear on a call insn, |
| 1d483afe | 9380 | or certain REL relocs (see must_be_dyn_reloc) that can be |
| 9c7a29a3 AM |
9381 | generated via assembly. We want calls to protected symbols to |
| 9382 | resolve directly to the function rather than going via the plt. | |
| 9383 | If people want function pointer comparisons to work as expected | |
| 9384 | then they should avoid writing weird assembly. */ | |
| 09695f56 | 9385 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 65f38f15 | 9386 | { |
| 6061a67d | 9387 | struct elf_dyn_relocs **pp; |
| 65f38f15 AM |
9388 | |
| 9389 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
| 5bd4f169 | 9390 | { |
| 65f38f15 AM |
9391 | p->count -= p->pc_count; |
| 9392 | p->pc_count = 0; | |
| 9393 | if (p->count == 0) | |
| 9394 | *pp = p->next; | |
| 9395 | else | |
| 9396 | pp = &p->next; | |
| 5bd4f169 | 9397 | } |
| 65f38f15 | 9398 | } |
| 4e795f50 AM |
9399 | |
| 9400 | /* Also discard relocs on undefined weak syms with non-default | |
| 9401 | visibility. */ | |
| cab87ef9 AM |
9402 | if (eh->dyn_relocs != NULL |
| 9403 | && h->root.type == bfd_link_hash_undefweak) | |
| dfbb6ac9 AM |
9404 | { |
| 9405 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
| 9406 | eh->dyn_relocs = NULL; | |
| 9407 | ||
| 9408 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9409 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9410 | else if (h->dynindx == -1 | |
| 9411 | && !h->forced_local) | |
| 9412 | { | |
| 9413 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
| 9414 | return FALSE; | |
| 9415 | } | |
| 9416 | } | |
| 65f38f15 | 9417 | } |
| 25f23106 AM |
9418 | else if (h->type == STT_GNU_IFUNC) |
| 9419 | { | |
| 9420 | if (!h->non_got_ref) | |
| 9421 | eh->dyn_relocs = NULL; | |
| 9422 | } | |
| f4656909 | 9423 | else if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 AM |
9424 | { |
| 9425 | /* For the non-shared case, discard space for relocs against | |
| 9426 | symbols which turn out to need copy relocs or are not | |
| 9427 | dynamic. */ | |
| 9428 | ||
| f5385ebf | 9429 | if (!h->non_got_ref |
| f5385ebf | 9430 | && !h->def_regular) |
| 65f38f15 AM |
9431 | { |
| 9432 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9433 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9434 | if (h->dynindx == -1 | |
| f5385ebf | 9435 | && !h->forced_local) |
| 65f38f15 | 9436 | { |
| c152c796 | 9437 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| b34976b6 | 9438 | return FALSE; |
| 65f38f15 AM |
9439 | } |
| 9440 | ||
| 9441 | /* If that succeeded, we know we'll be keeping all the | |
| 9442 | relocs. */ | |
| 9443 | if (h->dynindx != -1) | |
| 9444 | goto keep; | |
| 9445 | } | |
| 9446 | ||
| 9447 | eh->dyn_relocs = NULL; | |
| 9448 | ||
| ec338859 | 9449 | keep: ; |
| 65f38f15 AM |
9450 | } |
| 9451 | ||
| 9452 | /* Finally, allocate space. */ | |
| 9453 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 9454 | { | |
| 9455 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
| 19e08130 | 9456 | if (eh->elf.type == STT_GNU_IFUNC) |
| 25f23106 | 9457 | sreloc = htab->reliplt; |
| eea6121a | 9458 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
| 65f38f15 AM |
9459 | } |
| 9460 | ||
| b34976b6 | 9461 | return TRUE; |
| 65f38f15 AM |
9462 | } |
| 9463 | ||
| 9464 | /* Find any dynamic relocs that apply to read-only sections. */ | |
| 9465 | ||
| b34976b6 | 9466 | static bfd_boolean |
| 4ce794b7 | 9467 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 65f38f15 AM |
9468 | { |
| 9469 | struct ppc_link_hash_entry *eh; | |
| 6061a67d | 9470 | struct elf_dyn_relocs *p; |
| 65f38f15 AM |
9471 | |
| 9472 | eh = (struct ppc_link_hash_entry *) h; | |
| 9473 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 9474 | { | |
| 9475 | asection *s = p->sec->output_section; | |
| 9476 | ||
| 9477 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 9478 | { | |
| 4ce794b7 | 9479 | struct bfd_link_info *info = inf; |
| 65f38f15 AM |
9480 | |
| 9481 | info->flags |= DF_TEXTREL; | |
| 9482 | ||
| 9483 | /* Not an error, just cut short the traversal. */ | |
| b34976b6 | 9484 | return FALSE; |
| 65f38f15 AM |
9485 | } |
| 9486 | } | |
| b34976b6 | 9487 | return TRUE; |
| 65f38f15 AM |
9488 | } |
| 9489 | ||
| 9490 | /* Set the sizes of the dynamic sections. */ | |
| 9491 | ||
| b34976b6 | 9492 | static bfd_boolean |
| ee67d69a | 9493 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
| 4ce794b7 | 9494 | struct bfd_link_info *info) |
| 65f38f15 AM |
9495 | { |
| 9496 | struct ppc_link_hash_table *htab; | |
| 9497 | bfd *dynobj; | |
| 9498 | asection *s; | |
| b34976b6 | 9499 | bfd_boolean relocs; |
| 65f38f15 | 9500 | bfd *ibfd; |
| 7865406b | 9501 | struct got_entry *first_tlsld; |
| 65f38f15 AM |
9502 | |
| 9503 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9504 | if (htab == NULL) |
| 9505 | return FALSE; | |
| 9506 | ||
| 65f38f15 AM |
9507 | dynobj = htab->elf.dynobj; |
| 9508 | if (dynobj == NULL) | |
| 9509 | abort (); | |
| 9510 | ||
| 9511 | if (htab->elf.dynamic_sections_created) | |
| 9512 | { | |
| 9513 | /* Set the contents of the .interp section to the interpreter. */ | |
| 36af4a4e | 9514 | if (info->executable) |
| 65f38f15 | 9515 | { |
| 3d4d4302 | 9516 | s = bfd_get_linker_section (dynobj, ".interp"); |
| 65f38f15 AM |
9517 | if (s == NULL) |
| 9518 | abort (); | |
| eea6121a | 9519 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 65f38f15 AM |
9520 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 9521 | } | |
| 9522 | } | |
| 9523 | ||
| 9524 | /* Set up .got offsets for local syms, and space for local dynamic | |
| 9525 | relocs. */ | |
| 9526 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 9527 | { | |
| 411e1bfb AM |
9528 | struct got_entry **lgot_ents; |
| 9529 | struct got_entry **end_lgot_ents; | |
| e054468f AM |
9530 | struct plt_entry **local_plt; |
| 9531 | struct plt_entry **end_local_plt; | |
| f961d9dd | 9532 | unsigned char *lgot_masks; |
| 65f38f15 AM |
9533 | bfd_size_type locsymcount; |
| 9534 | Elf_Internal_Shdr *symtab_hdr; | |
| 65f38f15 | 9535 | |
| 0c8d6e5c | 9536 | if (!is_ppc64_elf (ibfd)) |
| 65f38f15 AM |
9537 | continue; |
| 9538 | ||
| 9539 | for (s = ibfd->sections; s != NULL; s = s->next) | |
| 9540 | { | |
| 19e08130 | 9541 | struct ppc_dyn_relocs *p; |
| 65f38f15 | 9542 | |
| 6edfbbad | 9543 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 65f38f15 | 9544 | { |
| ec338859 AM |
9545 | if (!bfd_is_abs_section (p->sec) |
| 9546 | && bfd_is_abs_section (p->sec->output_section)) | |
| 9547 | { | |
| 9548 | /* Input section has been discarded, either because | |
| 9549 | it is a copy of a linkonce section or due to | |
| 9550 | linker script /DISCARD/, so we'll be discarding | |
| 9551 | the relocs too. */ | |
| 9552 | } | |
| 248866a8 | 9553 | else if (p->count != 0) |
| ec338859 | 9554 | { |
| 19e08130 AM |
9555 | asection *srel = elf_section_data (p->sec)->sreloc; |
| 9556 | if (p->ifunc) | |
| 25f23106 | 9557 | srel = htab->reliplt; |
| eea6121a | 9558 | srel->size += p->count * sizeof (Elf64_External_Rela); |
| 248866a8 AM |
9559 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 9560 | info->flags |= DF_TEXTREL; | |
| ec338859 | 9561 | } |
| 65f38f15 AM |
9562 | } |
| 9563 | } | |
| 9564 | ||
| 411e1bfb AM |
9565 | lgot_ents = elf_local_got_ents (ibfd); |
| 9566 | if (!lgot_ents) | |
| 65f38f15 AM |
9567 | continue; |
| 9568 | ||
| 0ffa91dd | 9569 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 65f38f15 | 9570 | locsymcount = symtab_hdr->sh_info; |
| 411e1bfb | 9571 | end_lgot_ents = lgot_ents + locsymcount; |
| e054468f AM |
9572 | local_plt = (struct plt_entry **) end_lgot_ents; |
| 9573 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 9574 | lgot_masks = (unsigned char *) end_local_plt; |
| e717da7e | 9575 | s = ppc64_elf_tdata (ibfd)->got; |
| e7b938ca | 9576 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 65f38f15 | 9577 | { |
| 0b8bcf0d | 9578 | struct got_entry **pent, *ent; |
| 411e1bfb | 9579 | |
| 0b8bcf0d AM |
9580 | pent = lgot_ents; |
| 9581 | while ((ent = *pent) != NULL) | |
| 411e1bfb AM |
9582 | if (ent->got.refcount > 0) |
| 9583 | { | |
| e7b938ca | 9584 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
| 411e1bfb | 9585 | { |
| 927be08e | 9586 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
| 0b8bcf0d | 9587 | *pent = ent->next; |
| 411e1bfb AM |
9588 | } |
| 9589 | else | |
| 9590 | { | |
| 19e08130 AM |
9591 | unsigned int ent_size = 8; |
| 9592 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 9593 | ||
| eea6121a | 9594 | ent->got.offset = s->size; |
| e7b938ca | 9595 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
| 927be08e | 9596 | { |
| 19e08130 AM |
9597 | ent_size *= 2; |
| 9598 | rel_size *= 2; | |
| 9599 | } | |
| 9600 | s->size += ent_size; | |
| 9601 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 9602 | { | |
| 9603 | htab->reliplt->size += rel_size; | |
| 9604 | htab->got_reli_size += rel_size; | |
| 9605 | } | |
| 9606 | else if (info->shared) | |
| 9607 | { | |
| 9608 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 9609 | srel->size += rel_size; | |
| 927be08e | 9610 | } |
| 0b8bcf0d | 9611 | pent = &ent->next; |
| 411e1bfb AM |
9612 | } |
| 9613 | } | |
| 9614 | else | |
| 0b8bcf0d | 9615 | *pent = ent->next; |
| 65f38f15 | 9616 | } |
| e054468f AM |
9617 | |
| 9618 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
| 9619 | for (; local_plt < end_local_plt; ++local_plt) | |
| 9620 | { | |
| 9621 | struct plt_entry *ent; | |
| 9622 | ||
| 9623 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
| 9624 | if (ent->plt.refcount > 0) | |
| 9625 | { | |
| 91d6fa6a | 9626 | s = htab->iplt; |
| e054468f | 9627 | ent->plt.offset = s->size; |
| b9e5796b | 9628 | s->size += PLT_ENTRY_SIZE (htab); |
| e054468f | 9629 | |
| 25f23106 | 9630 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
| e054468f AM |
9631 | } |
| 9632 | else | |
| 9633 | ent->plt.offset = (bfd_vma) -1; | |
| 9634 | } | |
| 65f38f15 AM |
9635 | } |
| 9636 | ||
| 9637 | /* Allocate global sym .plt and .got entries, and space for global | |
| 9638 | sym dynamic relocs. */ | |
| 4ce794b7 | 9639 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
| 65f38f15 | 9640 | |
| 7865406b | 9641 | first_tlsld = NULL; |
| 102890f0 AM |
9642 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 9643 | { | |
| 7865406b AM |
9644 | struct got_entry *ent; |
| 9645 | ||
| 0c8d6e5c | 9646 | if (!is_ppc64_elf (ibfd)) |
| 102890f0 AM |
9647 | continue; |
| 9648 | ||
| 7865406b AM |
9649 | ent = ppc64_tlsld_got (ibfd); |
| 9650 | if (ent->got.refcount > 0) | |
| 102890f0 | 9651 | { |
| 7865406b | 9652 | if (!htab->do_multi_toc && first_tlsld != NULL) |
| 102890f0 | 9653 | { |
| 7865406b AM |
9654 | ent->is_indirect = TRUE; |
| 9655 | ent->got.ent = first_tlsld; | |
| 9656 | } | |
| 9657 | else | |
| 9658 | { | |
| 9659 | if (first_tlsld == NULL) | |
| 9660 | first_tlsld = ent; | |
| 9661 | s = ppc64_elf_tdata (ibfd)->got; | |
| 9662 | ent->got.offset = s->size; | |
| 9663 | ent->owner = ibfd; | |
| 9664 | s->size += 16; | |
| 9665 | if (info->shared) | |
| 9666 | { | |
| 9667 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 9668 | srel->size += sizeof (Elf64_External_Rela); | |
| 9669 | } | |
| 102890f0 AM |
9670 | } |
| 9671 | } | |
| 9672 | else | |
| 7865406b | 9673 | ent->got.offset = (bfd_vma) -1; |
| 102890f0 AM |
9674 | } |
| 9675 | ||
| 65f38f15 AM |
9676 | /* We now have determined the sizes of the various dynamic sections. |
| 9677 | Allocate memory for them. */ | |
| b34976b6 | 9678 | relocs = FALSE; |
| 65f38f15 AM |
9679 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 9680 | { | |
| 9681 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
| 9682 | continue; | |
| 9683 | ||
| 4ce794b7 | 9684 | if (s == htab->brlt || s == htab->relbrlt) |
| 721956f4 AM |
9685 | /* These haven't been allocated yet; don't strip. */ |
| 9686 | continue; | |
| e717da7e AM |
9687 | else if (s == htab->got |
| 9688 | || s == htab->plt | |
| e054468f | 9689 | || s == htab->iplt |
| c456f082 AM |
9690 | || s == htab->glink |
| 9691 | || s == htab->dynbss) | |
| 65f38f15 AM |
9692 | { |
| 9693 | /* Strip this section if we don't need it; see the | |
| 9694 | comment below. */ | |
| 5bd4f169 | 9695 | } |
| 58d180e8 AM |
9696 | else if (s == htab->glink_eh_frame) |
| 9697 | { | |
| 9698 | if (!bfd_is_abs_section (s->output_section)) | |
| 9699 | /* Not sized yet. */ | |
| 9700 | continue; | |
| 9701 | } | |
| 70cc837d | 9702 | else if (CONST_STRNEQ (s->name, ".rela")) |
| 5bd4f169 | 9703 | { |
| c456f082 | 9704 | if (s->size != 0) |
| 5bd4f169 | 9705 | { |
| 4ce794b7 | 9706 | if (s != htab->relplt) |
| b34976b6 | 9707 | relocs = TRUE; |
| 5bd4f169 AM |
9708 | |
| 9709 | /* We use the reloc_count field as a counter if we need | |
| 9710 | to copy relocs into the output file. */ | |
| 9711 | s->reloc_count = 0; | |
| 9712 | } | |
| 9713 | } | |
| 65f38f15 | 9714 | else |
| 5bd4f169 AM |
9715 | { |
| 9716 | /* It's not one of our sections, so don't allocate space. */ | |
| 9717 | continue; | |
| 9718 | } | |
| 9719 | ||
| eea6121a | 9720 | if (s->size == 0) |
| 5bd4f169 | 9721 | { |
| c456f082 AM |
9722 | /* If we don't need this section, strip it from the |
| 9723 | output file. This is mostly to handle .rela.bss and | |
| 9724 | .rela.plt. We must create both sections in | |
| 9725 | create_dynamic_sections, because they must be created | |
| 9726 | before the linker maps input sections to output | |
| 9727 | sections. The linker does that before | |
| 9728 | adjust_dynamic_symbol is called, and it is that | |
| 9729 | function which decides whether anything needs to go | |
| 9730 | into these sections. */ | |
| 8423293d | 9731 | s->flags |= SEC_EXCLUDE; |
| 5bd4f169 AM |
9732 | continue; |
| 9733 | } | |
| 9734 | ||
| c456f082 | 9735 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 5f333394 AM |
9736 | continue; |
| 9737 | ||
| 65f38f15 AM |
9738 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 9739 | here in case unused entries are not reclaimed before the | |
| 9740 | section's contents are written out. This should not happen, | |
| 411e1bfb AM |
9741 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
| 9742 | sections instead of garbage. | |
| 9743 | We also rely on the section contents being zero when writing | |
| 9744 | the GOT. */ | |
| eea6121a | 9745 | s->contents = bfd_zalloc (dynobj, s->size); |
| 65f38f15 | 9746 | if (s->contents == NULL) |
| b34976b6 | 9747 | return FALSE; |
| 5bd4f169 AM |
9748 | } |
| 9749 | ||
| e717da7e AM |
9750 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 9751 | { | |
| 0c8d6e5c | 9752 | if (!is_ppc64_elf (ibfd)) |
| 7b53ace3 AM |
9753 | continue; |
| 9754 | ||
| e717da7e AM |
9755 | s = ppc64_elf_tdata (ibfd)->got; |
| 9756 | if (s != NULL && s != htab->got) | |
| 9757 | { | |
| eea6121a | 9758 | if (s->size == 0) |
| 8423293d | 9759 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
9760 | else |
| 9761 | { | |
| eea6121a | 9762 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
9763 | if (s->contents == NULL) |
| 9764 | return FALSE; | |
| 9765 | } | |
| 9766 | } | |
| 9767 | s = ppc64_elf_tdata (ibfd)->relgot; | |
| 9768 | if (s != NULL) | |
| 9769 | { | |
| eea6121a | 9770 | if (s->size == 0) |
| 8423293d | 9771 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
9772 | else |
| 9773 | { | |
| eea6121a | 9774 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
9775 | if (s->contents == NULL) |
| 9776 | return FALSE; | |
| 9777 | relocs = TRUE; | |
| 9778 | s->reloc_count = 0; | |
| 9779 | } | |
| 9780 | } | |
| 9781 | } | |
| 9782 | ||
| e86ce104 | 9783 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 AM |
9784 | { |
| 9785 | /* Add some entries to the .dynamic section. We fill in the | |
| 9786 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
| 9787 | must add the entries now so that we get the correct size for | |
| 9788 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
| 9789 | dynamic linker and used by the debugger. */ | |
| dc810e39 | 9790 | #define add_dynamic_entry(TAG, VAL) \ |
| 5a580b3a | 9791 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| dc810e39 | 9792 | |
| 36af4a4e | 9793 | if (info->executable) |
| 5bd4f169 | 9794 | { |
| dc810e39 | 9795 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| b34976b6 | 9796 | return FALSE; |
| 5bd4f169 AM |
9797 | } |
| 9798 | ||
| eea6121a | 9799 | if (htab->plt != NULL && htab->plt->size != 0) |
| 5bd4f169 | 9800 | { |
| dc810e39 AM |
9801 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 9802 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
| 9803 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
| 5d1634d7 AM |
9804 | || !add_dynamic_entry (DT_JMPREL, 0) |
| 9805 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
| b34976b6 | 9806 | return FALSE; |
| 5bd4f169 AM |
9807 | } |
| 9808 | ||
| ee67d69a | 9809 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
| 19397422 AM |
9810 | { |
| 9811 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
| 9812 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
| b34976b6 | 9813 | return FALSE; |
| 19397422 AM |
9814 | } |
| 9815 | ||
| a7f2871e AM |
9816 | if (!htab->no_tls_get_addr_opt |
| 9817 | && htab->tls_get_addr_fd != NULL | |
| 9818 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
| 9819 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
| 9820 | return FALSE; | |
| 9821 | ||
| 5bd4f169 AM |
9822 | if (relocs) |
| 9823 | { | |
| dc810e39 AM |
9824 | if (!add_dynamic_entry (DT_RELA, 0) |
| 9825 | || !add_dynamic_entry (DT_RELASZ, 0) | |
| 9826 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
| b34976b6 | 9827 | return FALSE; |
| 5bd4f169 | 9828 | |
| 65f38f15 AM |
9829 | /* If any dynamic relocs apply to a read-only section, |
| 9830 | then we need a DT_TEXTREL entry. */ | |
| 248866a8 | 9831 | if ((info->flags & DF_TEXTREL) == 0) |
| 4ce794b7 | 9832 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
| 5bd4f169 | 9833 | |
| 65f38f15 | 9834 | if ((info->flags & DF_TEXTREL) != 0) |
| 5bd4f169 | 9835 | { |
| 65f38f15 | 9836 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| b34976b6 | 9837 | return FALSE; |
| 5bd4f169 | 9838 | } |
| 5bd4f169 | 9839 | } |
| 5bd4f169 | 9840 | } |
| 65f38f15 | 9841 | #undef add_dynamic_entry |
| 5bd4f169 | 9842 | |
| b34976b6 | 9843 | return TRUE; |
| 5bd4f169 AM |
9844 | } |
| 9845 | ||
| 721956f4 | 9846 | /* Determine the type of stub needed, if any, for a call. */ |
| 5bd4f169 | 9847 | |
| 4ce794b7 AM |
9848 | static inline enum ppc_stub_type |
| 9849 | ppc_type_of_stub (asection *input_sec, | |
| 9850 | const Elf_Internal_Rela *rel, | |
| 9851 | struct ppc_link_hash_entry **hash, | |
| e054468f | 9852 | struct plt_entry **plt_ent, |
| 6911b7dc AM |
9853 | bfd_vma destination, |
| 9854 | unsigned long local_off) | |
| 5bd4f169 | 9855 | { |
| 721956f4 AM |
9856 | struct ppc_link_hash_entry *h = *hash; |
| 9857 | bfd_vma location; | |
| 9858 | bfd_vma branch_offset; | |
| 9859 | bfd_vma max_branch_offset; | |
| 4ce794b7 | 9860 | enum elf_ppc64_reloc_type r_type; |
| 5bd4f169 | 9861 | |
| 721956f4 AM |
9862 | if (h != NULL) |
| 9863 | { | |
| e054468f | 9864 | struct plt_entry *ent; |
| 7fe2b9a6 | 9865 | struct ppc_link_hash_entry *fdh = h; |
| b31867b6 AM |
9866 | if (h->oh != NULL |
| 9867 | && h->oh->is_func_descriptor) | |
| 7b8f6675 AM |
9868 | { |
| 9869 | fdh = ppc_follow_link (h->oh); | |
| 9870 | *hash = fdh; | |
| 9871 | } | |
| 8387904d | 9872 | |
| e054468f AM |
9873 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 9874 | if (ent->addend == rel->r_addend | |
| 9875 | && ent->plt.offset != (bfd_vma) -1) | |
| 9876 | { | |
| e054468f AM |
9877 | *plt_ent = ent; |
| 9878 | return ppc_stub_plt_call; | |
| 9879 | } | |
| 5bd4f169 | 9880 | |
| 7fe2b9a6 AM |
9881 | /* Here, we know we don't have a plt entry. If we don't have a |
| 9882 | either a defined function descriptor or a defined entry symbol | |
| 9883 | in a regular object file, then it is pointless trying to make | |
| 9884 | any other type of stub. */ | |
| 854b41e7 AM |
9885 | if (!is_static_defined (&fdh->elf) |
| 9886 | && !is_static_defined (&h->elf)) | |
| 721956f4 | 9887 | return ppc_stub_none; |
| 5d1634d7 | 9888 | } |
| e054468f AM |
9889 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
| 9890 | { | |
| 9891 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
| 9892 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 9893 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
| 9894 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9895 | ||
| 9896 | if (local_plt[r_symndx] != NULL) | |
| 9897 | { | |
| 9898 | struct plt_entry *ent; | |
| 9899 | ||
| 9900 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
| 9901 | if (ent->addend == rel->r_addend | |
| 9902 | && ent->plt.offset != (bfd_vma) -1) | |
| 9903 | { | |
| 9904 | *plt_ent = ent; | |
| 9905 | return ppc_stub_plt_call; | |
| 9906 | } | |
| 9907 | } | |
| 9908 | } | |
| 5d1634d7 | 9909 | |
| 721956f4 AM |
9910 | /* Determine where the call point is. */ |
| 9911 | location = (input_sec->output_offset | |
| 9912 | + input_sec->output_section->vma | |
| 9913 | + rel->r_offset); | |
| 5d1634d7 | 9914 | |
| 721956f4 AM |
9915 | branch_offset = destination - location; |
| 9916 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 5d1634d7 | 9917 | |
| 721956f4 AM |
9918 | /* Determine if a long branch stub is needed. */ |
| 9919 | max_branch_offset = 1 << 25; | |
| 4ce794b7 | 9920 | if (r_type != R_PPC64_REL24) |
| 721956f4 | 9921 | max_branch_offset = 1 << 15; |
| 5d1634d7 | 9922 | |
| 6911b7dc | 9923 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
| 721956f4 AM |
9924 | /* We need a stub. Figure out whether a long_branch or plt_branch |
| 9925 | is needed later. */ | |
| 9926 | return ppc_stub_long_branch; | |
| 5d1634d7 | 9927 | |
| 721956f4 | 9928 | return ppc_stub_none; |
| 5d1634d7 AM |
9929 | } |
| 9930 | ||
| 794e51c0 AM |
9931 | /* With power7 weakly ordered memory model, it is possible for ld.so |
| 9932 | to update a plt entry in one thread and have another thread see a | |
| 9933 | stale zero toc entry. To avoid this we need some sort of acquire | |
| 9934 | barrier in the call stub. One solution is to make the load of the | |
| 9935 | toc word seem to appear to depend on the load of the function entry | |
| 9936 | word. Another solution is to test for r2 being zero, and branch to | |
| 9937 | the appropriate glink entry if so. | |
| 9938 | ||
| 9939 | . fake dep barrier compare | |
| 71a39c98 AM |
9940 | . ld 12,xxx(2) ld 12,xxx(2) |
| 9941 | . mtctr 12 mtctr 12 | |
| 9942 | . xor 11,12,12 ld 2,xxx+8(2) | |
| 794e51c0 AM |
9943 | . add 2,2,11 cmpldi 2,0 |
| 9944 | . ld 2,xxx+8(2) bnectr+ | |
| 9945 | . bctr b <glink_entry> | |
| 9946 | ||
| 9947 | The solution involving the compare turns out to be faster, so | |
| 9948 | that's what we use unless the branch won't reach. */ | |
| 9949 | ||
| 9950 | #define ALWAYS_USE_FAKE_DEP 0 | |
| 9951 | #define ALWAYS_EMIT_R2SAVE 0 | |
| 5d1634d7 | 9952 | |
| 5d1634d7 AM |
9953 | #define PPC_LO(v) ((v) & 0xffff) |
| 9954 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
| 9955 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
| 9956 | ||
| 794e51c0 AM |
9957 | static inline unsigned int |
| 9958 | plt_stub_size (struct ppc_link_hash_table *htab, | |
| 9959 | struct ppc_stub_hash_entry *stub_entry, | |
| 9960 | bfd_vma off) | |
| 9961 | { | |
| b9e5796b AM |
9962 | unsigned size = 12; |
| 9963 | ||
| 9964 | if (ALWAYS_EMIT_R2SAVE | |
| 9965 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 9966 | size += 4; | |
| 9967 | if (PPC_HA (off) != 0) | |
| 794e51c0 | 9968 | size += 4; |
| b9e5796b AM |
9969 | if (htab->opd_abi) |
| 9970 | { | |
| 9971 | size += 4; | |
| 9972 | if (htab->plt_static_chain) | |
| 9973 | size += 4; | |
| 9974 | if (htab->plt_thread_safe) | |
| 9975 | size += 8; | |
| 9976 | if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off)) | |
| 9977 | size += 4; | |
| 9978 | } | |
| 794e51c0 AM |
9979 | if (stub_entry->h != NULL |
| 9980 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 9981 | || stub_entry->h == htab->tls_get_addr) | |
| 9982 | && !htab->no_tls_get_addr_opt) | |
| 9983 | size += 13 * 4; | |
| 9984 | return size; | |
| 9985 | } | |
| 9986 | ||
| 9987 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
| 9988 | then return the padding needed to do so. */ | |
| 9989 | static inline unsigned int | |
| 9990 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
| 9991 | struct ppc_stub_hash_entry *stub_entry, | |
| 9992 | bfd_vma plt_off) | |
| 9993 | { | |
| 9994 | int stub_align = 1 << htab->plt_stub_align; | |
| 9995 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); | |
| 9996 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
| 9997 | ||
| 9998 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
| 9999 | > (stub_size & -stub_align)) | |
| 10000 | return stub_align - (stub_off & (stub_align - 1)); | |
| 10001 | return 0; | |
| 10002 | } | |
| 10003 | ||
| 10004 | /* Build a .plt call stub. */ | |
| 10005 | ||
| 10006 | static inline bfd_byte * | |
| 10007 | build_plt_stub (struct ppc_link_hash_table *htab, | |
| 10008 | struct ppc_stub_hash_entry *stub_entry, | |
| 10009 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| 10010 | { | |
| 10011 | bfd *obfd = htab->stub_bfd; | |
| b9e5796b | 10012 | bfd_boolean plt_load_toc = htab->opd_abi; |
| 794e51c0 AM |
10013 | bfd_boolean plt_static_chain = htab->plt_static_chain; |
| 10014 | bfd_boolean plt_thread_safe = htab->plt_thread_safe; | |
| 10015 | bfd_boolean use_fake_dep = plt_thread_safe; | |
| 10016 | bfd_vma cmp_branch_off = 0; | |
| 10017 | ||
| 10018 | if (!ALWAYS_USE_FAKE_DEP | |
| b9e5796b | 10019 | && plt_load_toc |
| 794e51c0 AM |
10020 | && plt_thread_safe |
| 10021 | && !(stub_entry->h != NULL | |
| 10022 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 10023 | || stub_entry->h == htab->tls_get_addr) | |
| 10024 | && !htab->no_tls_get_addr_opt)) | |
| 10025 | { | |
| 10026 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
| b9e5796b AM |
10027 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
| 10028 | / PLT_ENTRY_SIZE (htab)); | |
| 794e51c0 AM |
10029 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
| 10030 | bfd_vma to, from; | |
| 10031 | ||
| 68d62958 AM |
10032 | if (pltindex > 32768) |
| 10033 | glinkoff += (pltindex - 32768) * 4; | |
| 794e51c0 AM |
10034 | to = (glinkoff |
| 10035 | + htab->glink->output_offset | |
| 10036 | + htab->glink->output_section->vma); | |
| 10037 | from = (p - stub_entry->stub_sec->contents | |
| 10038 | + 4 * (ALWAYS_EMIT_R2SAVE | |
| 10039 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10040 | + 4 * (PPC_HA (offset) != 0) | |
| 10041 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
| 10042 | != PPC_HA (offset)) | |
| 10043 | + 4 * (plt_static_chain != 0) | |
| 10044 | + 20 | |
| 10045 | + stub_entry->stub_sec->output_offset | |
| 10046 | + stub_entry->stub_sec->output_section->vma); | |
| 10047 | cmp_branch_off = to - from; | |
| 10048 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
| 10049 | } | |
| 10050 | ||
| ac2df442 AM |
10051 | if (PPC_HA (offset) != 0) |
| 10052 | { | |
| 176a0d42 AM |
10053 | if (r != NULL) |
| 10054 | { | |
| 794e51c0 AM |
10055 | if (ALWAYS_EMIT_R2SAVE |
| 10056 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10057 | r[0].r_offset += 4; | |
| 176a0d42 | 10058 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
| 3b421ab3 | 10059 | r[1].r_offset = r[0].r_offset + 4; |
| 176a0d42 AM |
10060 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
| 10061 | r[1].r_addend = r[0].r_addend; | |
| b9e5796b | 10062 | if (plt_load_toc) |
| 176a0d42 | 10063 | { |
| b9e5796b | 10064 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| c7131b65 | 10065 | { |
| b9e5796b AM |
10066 | r[2].r_offset = r[1].r_offset + 4; |
| 10067 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
| 10068 | r[2].r_addend = r[0].r_addend; | |
| 10069 | } | |
| 10070 | else | |
| 10071 | { | |
| 10072 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
| 10073 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10074 | r[2].r_addend = r[0].r_addend + 8; | |
| 10075 | if (plt_static_chain) | |
| 10076 | { | |
| 10077 | r[3].r_offset = r[2].r_offset + 4; | |
| 10078 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10079 | r[3].r_addend = r[0].r_addend + 16; | |
| 10080 | } | |
| c7131b65 | 10081 | } |
| 176a0d42 AM |
10082 | } |
| 10083 | } | |
| 794e51c0 AM |
10084 | if (ALWAYS_EMIT_R2SAVE |
| 10085 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10086 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
| 71a39c98 AM |
10087 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; |
| 10088 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
| b9e5796b AM |
10089 | if (plt_load_toc |
| 10090 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
| ac2df442 | 10091 | { |
| 71a39c98 | 10092 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
| ac2df442 AM |
10093 | offset = 0; |
| 10094 | } | |
| 71a39c98 | 10095 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| b9e5796b | 10096 | if (plt_load_toc) |
| 794e51c0 | 10097 | { |
| b9e5796b AM |
10098 | if (use_fake_dep) |
| 10099 | { | |
| 10100 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
| 10101 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
| 10102 | } | |
| 10103 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
| 10104 | if (plt_static_chain) | |
| 10105 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
| 794e51c0 | 10106 | } |
| ac2df442 AM |
10107 | } |
| 10108 | else | |
| 10109 | { | |
| 176a0d42 AM |
10110 | if (r != NULL) |
| 10111 | { | |
| 794e51c0 AM |
10112 | if (ALWAYS_EMIT_R2SAVE |
| 10113 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10114 | r[0].r_offset += 4; | |
| 176a0d42 | 10115 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
| b9e5796b | 10116 | if (plt_load_toc) |
| 176a0d42 | 10117 | { |
| b9e5796b | 10118 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| c7131b65 | 10119 | { |
| b9e5796b AM |
10120 | r[1].r_offset = r[0].r_offset + 4; |
| 10121 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
| 10122 | r[1].r_addend = r[0].r_addend; | |
| 10123 | } | |
| 10124 | else | |
| 10125 | { | |
| 10126 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
| 10127 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10128 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
| 10129 | if (plt_static_chain) | |
| 10130 | { | |
| 10131 | r[2].r_offset = r[1].r_offset + 4; | |
| 10132 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10133 | r[2].r_addend = r[0].r_addend + 8; | |
| 10134 | } | |
| c7131b65 | 10135 | } |
| 176a0d42 AM |
10136 | } |
| 10137 | } | |
| 794e51c0 AM |
10138 | if (ALWAYS_EMIT_R2SAVE |
| 10139 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10140 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
| 71a39c98 | 10141 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
| b9e5796b AM |
10142 | if (plt_load_toc |
| 10143 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
| ac2df442 AM |
10144 | { |
| 10145 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
| 10146 | offset = 0; | |
| 10147 | } | |
| 71a39c98 | 10148 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| b9e5796b | 10149 | if (plt_load_toc) |
| 794e51c0 | 10150 | { |
| b9e5796b AM |
10151 | if (use_fake_dep) |
| 10152 | { | |
| 10153 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
| 10154 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
| 10155 | } | |
| 10156 | if (plt_static_chain) | |
| 10157 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
| 10158 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
| 794e51c0 | 10159 | } |
| ac2df442 | 10160 | } |
| b9e5796b | 10161 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
| 794e51c0 AM |
10162 | { |
| 10163 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
| 10164 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
| 22aa0c7e | 10165 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
| 794e51c0 AM |
10166 | } |
| 10167 | else | |
| 10168 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 5d1634d7 AM |
10169 | return p; |
| 10170 | } | |
| 10171 | ||
| a7f2871e AM |
10172 | /* Build a special .plt call stub for __tls_get_addr. */ |
| 10173 | ||
| 10174 | #define LD_R11_0R3 0xe9630000 | |
| 10175 | #define LD_R12_0R3 0xe9830000 | |
| 10176 | #define MR_R0_R3 0x7c601b78 | |
| 10177 | #define CMPDI_R11_0 0x2c2b0000 | |
| 10178 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
| 10179 | #define BEQLR 0x4d820020 | |
| 10180 | #define MR_R3_R0 0x7c030378 | |
| 10181 | #define MFLR_R11 0x7d6802a6 | |
| 10182 | #define STD_R11_0R1 0xf9610000 | |
| 10183 | #define BCTRL 0x4e800421 | |
| 10184 | #define LD_R11_0R1 0xe9610000 | |
| 10185 | #define LD_R2_0R1 0xe8410000 | |
| 10186 | #define MTLR_R11 0x7d6803a6 | |
| 10187 | ||
| 10188 | static inline bfd_byte * | |
| 794e51c0 AM |
10189 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
| 10190 | struct ppc_stub_hash_entry *stub_entry, | |
| 10191 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| a7f2871e | 10192 | { |
| 794e51c0 AM |
10193 | bfd *obfd = htab->stub_bfd; |
| 10194 | ||
| a7f2871e AM |
10195 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
| 10196 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
| 10197 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
| 10198 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
| 10199 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
| 10200 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
| 10201 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
| 10202 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
| 10203 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
| 10204 | ||
| 10205 | if (r != NULL) | |
| 10206 | r[0].r_offset += 9 * 4; | |
| 794e51c0 | 10207 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
| a7f2871e AM |
10208 | bfd_put_32 (obfd, BCTRL, p - 4); |
| 10209 | ||
| 10210 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
| 10211 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
| 10212 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
| 10213 | bfd_put_32 (obfd, BLR, p), p += 4; | |
| 10214 | ||
| 10215 | return p; | |
| 10216 | } | |
| 10217 | ||
| 176a0d42 AM |
10218 | static Elf_Internal_Rela * |
| 10219 | get_relocs (asection *sec, int count) | |
| 10220 | { | |
| 10221 | Elf_Internal_Rela *relocs; | |
| 10222 | struct bfd_elf_section_data *elfsec_data; | |
| 10223 | ||
| 10224 | elfsec_data = elf_section_data (sec); | |
| 10225 | relocs = elfsec_data->relocs; | |
| 10226 | if (relocs == NULL) | |
| 10227 | { | |
| 10228 | bfd_size_type relsize; | |
| 10229 | relsize = sec->reloc_count * sizeof (*relocs); | |
| 10230 | relocs = bfd_alloc (sec->owner, relsize); | |
| 10231 | if (relocs == NULL) | |
| 10232 | return NULL; | |
| 10233 | elfsec_data->relocs = relocs; | |
| d4730f92 BS |
10234 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
| 10235 | sizeof (Elf_Internal_Shdr)); | |
| 10236 | if (elfsec_data->rela.hdr == NULL) | |
| 10237 | return NULL; | |
| 10238 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
| 10239 | * sizeof (Elf64_External_Rela)); | |
| 10240 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
| 176a0d42 AM |
10241 | sec->reloc_count = 0; |
| 10242 | } | |
| 10243 | relocs += sec->reloc_count; | |
| 10244 | sec->reloc_count += count; | |
| 10245 | return relocs; | |
| 10246 | } | |
| 10247 | ||
| aa374f67 | 10248 | static bfd_vma |
| 25f53a85 | 10249 | get_r2off (struct bfd_link_info *info, |
| aa374f67 AM |
10250 | struct ppc_stub_hash_entry *stub_entry) |
| 10251 | { | |
| 25f53a85 | 10252 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| aa374f67 AM |
10253 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
| 10254 | ||
| 10255 | if (r2off == 0) | |
| 10256 | { | |
| 10257 | /* Support linking -R objects. Get the toc pointer from the | |
| 10258 | opd entry. */ | |
| 10259 | char buf[8]; | |
| b9e5796b AM |
10260 | if (!htab->opd_abi) |
| 10261 | return r2off; | |
| aa374f67 AM |
10262 | asection *opd = stub_entry->h->elf.root.u.def.section; |
| 10263 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
| 10264 | ||
| 10265 | if (strcmp (opd->name, ".opd") != 0 | |
| 10266 | || opd->reloc_count != 0) | |
| 10267 | { | |
| bc30df16 | 10268 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
| 25f53a85 | 10269 | stub_entry->h->elf.root.root.string); |
| aa374f67 AM |
10270 | bfd_set_error (bfd_error_bad_value); |
| 10271 | return 0; | |
| 10272 | } | |
| 10273 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
| 10274 | return 0; | |
| 10275 | r2off = bfd_get_64 (opd->owner, buf); | |
| 25f53a85 | 10276 | r2off -= elf_gp (info->output_bfd); |
| aa374f67 AM |
10277 | } |
| 10278 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
| 10279 | return r2off; | |
| 10280 | } | |
| 10281 | ||
| b34976b6 | 10282 | static bfd_boolean |
| 4ce794b7 | 10283 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 5d1634d7 | 10284 | { |
| 721956f4 AM |
10285 | struct ppc_stub_hash_entry *stub_entry; |
| 10286 | struct ppc_branch_hash_entry *br_entry; | |
| 5d1634d7 AM |
10287 | struct bfd_link_info *info; |
| 10288 | struct ppc_link_hash_table *htab; | |
| 721956f4 AM |
10289 | bfd_byte *loc; |
| 10290 | bfd_byte *p; | |
| ee75fd95 | 10291 | bfd_vma dest, off; |
| 721956f4 | 10292 | int size; |
| 176a0d42 | 10293 | Elf_Internal_Rela *r; |
| e054468f | 10294 | asection *plt; |
| 5d1634d7 | 10295 | |
| 721956f4 AM |
10296 | /* Massage our args to the form they really have. */ |
| 10297 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 4ce794b7 | 10298 | info = in_arg; |
| 5d1634d7 | 10299 | |
| 5d1634d7 | 10300 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
10301 | if (htab == NULL) |
| 10302 | return FALSE; | |
| 5d1634d7 | 10303 | |
| 721956f4 | 10304 | /* Make a note of the offset within the stubs for this entry. */ |
| eea6121a | 10305 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
| 97b639ba | 10306 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
| 721956f4 | 10307 | |
| 4ce794b7 | 10308 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
| 721956f4 | 10309 | switch (stub_entry->stub_type) |
| 5d1634d7 | 10310 | { |
| 721956f4 | 10311 | case ppc_stub_long_branch: |
| ad8e1ba5 | 10312 | case ppc_stub_long_branch_r2off: |
| 721956f4 | 10313 | /* Branches are relative. This is where we are going to. */ |
| 6911b7dc AM |
10314 | dest = (stub_entry->target_value |
| 10315 | + stub_entry->target_section->output_offset | |
| 10316 | + stub_entry->target_section->output_section->vma); | |
| 10317 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
| 10318 | off = dest; | |
| 5d1634d7 | 10319 | |
| 721956f4 AM |
10320 | /* And this is where we are coming from. */ |
| 10321 | off -= (stub_entry->stub_offset | |
| 97b639ba AM |
10322 | + stub_entry->stub_sec->output_offset |
| 10323 | + stub_entry->stub_sec->output_section->vma); | |
| e86ce104 | 10324 | |
| ac2df442 AM |
10325 | size = 4; |
| 10326 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| ad8e1ba5 | 10327 | { |
| 25f53a85 | 10328 | bfd_vma r2off = get_r2off (info, stub_entry); |
| ad8e1ba5 | 10329 | |
| aa374f67 AM |
10330 | if (r2off == 0) |
| 10331 | { | |
| 10332 | htab->stub_error = TRUE; | |
| 10333 | return FALSE; | |
| 10334 | } | |
| 97b639ba | 10335 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
| ad8e1ba5 | 10336 | loc += 4; |
| ac2df442 AM |
10337 | size = 12; |
| 10338 | if (PPC_HA (r2off) != 0) | |
| 10339 | { | |
| 10340 | size = 16; | |
| 10341 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 10342 | loc += 4; | |
| 10343 | } | |
| 97b639ba | 10344 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 | 10345 | loc += 4; |
| ac2df442 | 10346 | off -= size - 4; |
| ad8e1ba5 | 10347 | } |
| 97b639ba | 10348 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
| ad8e1ba5 | 10349 | |
| 5c3dead3 AM |
10350 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 10351 | { | |
| bc30df16 AM |
10352 | info->callbacks->einfo |
| 10353 | (_("%P: long branch stub `%s' offset overflow\n"), | |
| 10354 | stub_entry->root.string); | |
| 5c3dead3 AM |
10355 | htab->stub_error = TRUE; |
| 10356 | return FALSE; | |
| 10357 | } | |
| ee75fd95 AM |
10358 | |
| 10359 | if (info->emitrelocations) | |
| 10360 | { | |
| 176a0d42 AM |
10361 | r = get_relocs (stub_entry->stub_sec, 1); |
| 10362 | if (r == NULL) | |
| 10363 | return FALSE; | |
| ee75fd95 AM |
10364 | r->r_offset = loc - stub_entry->stub_sec->contents; |
| 10365 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
| 10366 | r->r_addend = dest; | |
| 10367 | if (stub_entry->h != NULL) | |
| 10368 | { | |
| 10369 | struct elf_link_hash_entry **hashes; | |
| 10370 | unsigned long symndx; | |
| 10371 | struct ppc_link_hash_entry *h; | |
| 10372 | ||
| 10373 | hashes = elf_sym_hashes (htab->stub_bfd); | |
| 10374 | if (hashes == NULL) | |
| 10375 | { | |
| 10376 | bfd_size_type hsize; | |
| 10377 | ||
| 10378 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
| 10379 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
| 10380 | if (hashes == NULL) | |
| 10381 | return FALSE; | |
| 10382 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
| 10383 | htab->stub_globals = 1; | |
| 10384 | } | |
| 10385 | symndx = htab->stub_globals++; | |
| 10386 | h = stub_entry->h; | |
| 10387 | hashes[symndx] = &h->elf; | |
| 10388 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
| 10389 | if (h->oh != NULL && h->oh->is_func) | |
| b31867b6 | 10390 | h = ppc_follow_link (h->oh); |
| ee75fd95 AM |
10391 | if (h->elf.root.u.def.section != stub_entry->target_section) |
| 10392 | /* H is an opd symbol. The addend must be zero. */ | |
| 10393 | r->r_addend = 0; | |
| 10394 | else | |
| 10395 | { | |
| 10396 | off = (h->elf.root.u.def.value | |
| 10397 | + h->elf.root.u.def.section->output_offset | |
| 10398 | + h->elf.root.u.def.section->output_section->vma); | |
| 10399 | r->r_addend -= off; | |
| 10400 | } | |
| 10401 | } | |
| 10402 | } | |
| 721956f4 | 10403 | break; |
| e86ce104 | 10404 | |
| 721956f4 | 10405 | case ppc_stub_plt_branch: |
| ad8e1ba5 | 10406 | case ppc_stub_plt_branch_r2off: |
| 721956f4 AM |
10407 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
| 10408 | stub_entry->root.string + 9, | |
| b34976b6 | 10409 | FALSE, FALSE); |
| 721956f4 AM |
10410 | if (br_entry == NULL) |
| 10411 | { | |
| 8de848d8 | 10412 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
| 25f53a85 | 10413 | stub_entry->root.string); |
| b34976b6 AM |
10414 | htab->stub_error = TRUE; |
| 10415 | return FALSE; | |
| 721956f4 AM |
10416 | } |
| 10417 | ||
| 176a0d42 AM |
10418 | dest = (stub_entry->target_value |
| 10419 | + stub_entry->target_section->output_offset | |
| 10420 | + stub_entry->target_section->output_section->vma); | |
| 6911b7dc AM |
10421 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 10422 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
| 721956f4 | 10423 | |
| 176a0d42 | 10424 | bfd_put_64 (htab->brlt->owner, dest, |
| 4ce794b7 | 10425 | htab->brlt->contents + br_entry->offset); |
| 721956f4 | 10426 | |
| f94498ff | 10427 | if (br_entry->iter == htab->stub_iteration) |
| 721956f4 | 10428 | { |
| f94498ff | 10429 | br_entry->iter = 0; |
| 84f5d08e | 10430 | |
| f94498ff | 10431 | if (htab->relbrlt != NULL) |
| 84f5d08e | 10432 | { |
| f94498ff AM |
10433 | /* Create a reloc for the branch lookup table entry. */ |
| 10434 | Elf_Internal_Rela rela; | |
| 10435 | bfd_byte *rl; | |
| 10436 | ||
| 10437 | rela.r_offset = (br_entry->offset | |
| 10438 | + htab->brlt->output_offset | |
| 10439 | + htab->brlt->output_section->vma); | |
| 10440 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 10441 | rela.r_addend = dest; |
| f94498ff AM |
10442 | |
| 10443 | rl = htab->relbrlt->contents; | |
| 10444 | rl += (htab->relbrlt->reloc_count++ | |
| 10445 | * sizeof (Elf64_External_Rela)); | |
| 10446 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
| 10447 | } | |
| 10448 | else if (info->emitrelocations) | |
| 10449 | { | |
| 176a0d42 AM |
10450 | r = get_relocs (htab->brlt, 1); |
| 10451 | if (r == NULL) | |
| 10452 | return FALSE; | |
| 10453 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
| 10454 | normal reloc processing. Symbols and offsets are not | |
| 10455 | translated from input file to output file form, so | |
| 10456 | set up the offset per the output file. */ | |
| f94498ff AM |
10457 | r->r_offset = (br_entry->offset |
| 10458 | + htab->brlt->output_offset | |
| 10459 | + htab->brlt->output_section->vma); | |
| 10460 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 10461 | r->r_addend = dest; |
| 84f5d08e | 10462 | } |
| 84f5d08e | 10463 | } |
| 721956f4 | 10464 | |
| 176a0d42 AM |
10465 | dest = (br_entry->offset |
| 10466 | + htab->brlt->output_offset | |
| 10467 | + htab->brlt->output_section->vma); | |
| 10468 | ||
| 10469 | off = (dest | |
| 4ce794b7 | 10470 | - elf_gp (htab->brlt->output_section->owner) |
| ad8e1ba5 | 10471 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10472 | |
| ad8e1ba5 | 10473 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 5d1634d7 | 10474 | { |
| 25f53a85 | 10475 | info->callbacks->einfo |
| bc30df16 | 10476 | (_("%P: linkage table error against `%T'\n"), |
| 721956f4 | 10477 | stub_entry->root.string); |
| 5d1634d7 | 10478 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
10479 | htab->stub_error = TRUE; |
| 10480 | return FALSE; | |
| 5d1634d7 | 10481 | } |
| 41bd81ab | 10482 | |
| 176a0d42 AM |
10483 | if (info->emitrelocations) |
| 10484 | { | |
| 10485 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
| 10486 | if (r == NULL) | |
| 10487 | return FALSE; | |
| 10488 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
10489 | if (bfd_big_endian (info->output_bfd)) |
| 10490 | r[0].r_offset += 2; | |
| b9e5796b AM |
10491 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off |
| 10492 | && htab->opd_abi) | |
| 176a0d42 AM |
10493 | r[0].r_offset += 4; |
| 10494 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10495 | r[0].r_addend = dest; | |
| 10496 | if (PPC_HA (off) != 0) | |
| 10497 | { | |
| 10498 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 10499 | r[1].r_offset = r[0].r_offset + 4; | |
| 10500 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10501 | r[1].r_addend = r[0].r_addend; | |
| 10502 | } | |
| 10503 | } | |
| 10504 | ||
| b9e5796b AM |
10505 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off |
| 10506 | || !htab->opd_abi) | |
| ad8e1ba5 | 10507 | { |
| 176a0d42 | 10508 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10509 | { |
| 10510 | size = 16; | |
| 71a39c98 | 10511 | bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc); |
| ac2df442 | 10512 | loc += 4; |
| 71a39c98 | 10513 | bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc); |
| ac2df442 AM |
10514 | } |
| 10515 | else | |
| 10516 | { | |
| 10517 | size = 12; | |
| 71a39c98 | 10518 | bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
| ac2df442 | 10519 | } |
| ad8e1ba5 AM |
10520 | } |
| 10521 | else | |
| 10522 | { | |
| 25f53a85 | 10523 | bfd_vma r2off = get_r2off (info, stub_entry); |
| aa374f67 AM |
10524 | |
| 10525 | if (r2off == 0) | |
| 10526 | { | |
| 10527 | htab->stub_error = TRUE; | |
| 10528 | return FALSE; | |
| 10529 | } | |
| ad8e1ba5 | 10530 | |
| 97b639ba | 10531 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
| ad8e1ba5 | 10532 | loc += 4; |
| ac2df442 | 10533 | size = 20; |
| 176a0d42 | 10534 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10535 | { |
| 10536 | size += 4; | |
| 71a39c98 | 10537 | bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc); |
| ac2df442 | 10538 | loc += 4; |
| 71a39c98 | 10539 | bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc); |
| ac2df442 AM |
10540 | loc += 4; |
| 10541 | } | |
| 10542 | else | |
| 10543 | { | |
| 71a39c98 | 10544 | bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
| ac2df442 AM |
10545 | loc += 4; |
| 10546 | } | |
| 10547 | ||
| 10548 | if (PPC_HA (r2off) != 0) | |
| 10549 | { | |
| 10550 | size += 4; | |
| 10551 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 10552 | loc += 4; | |
| 10553 | } | |
| 97b639ba | 10554 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 AM |
10555 | } |
| 10556 | loc += 4; | |
| 71a39c98 | 10557 | bfd_put_32 (htab->stub_bfd, MTCTR_R12, loc); |
| ad8e1ba5 | 10558 | loc += 4; |
| 97b639ba | 10559 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
| 721956f4 | 10560 | break; |
| 5d1634d7 | 10561 | |
| 721956f4 | 10562 | case ppc_stub_plt_call: |
| 794e51c0 | 10563 | case ppc_stub_plt_call_r2save: |
| e054468f | 10564 | if (stub_entry->h != NULL |
| b31867b6 AM |
10565 | && stub_entry->h->is_func_descriptor |
| 10566 | && stub_entry->h->oh != NULL) | |
| c862ae31 | 10567 | { |
| b31867b6 AM |
10568 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
| 10569 | ||
| 10570 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
| 10571 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
| 10572 | FIXME: We used to define the symbol on one of the call | |
| 10573 | stubs instead, which is why we test symbol section id | |
| 10574 | against htab->top_id in various places. Likely all | |
| 10575 | these checks could now disappear. */ | |
| 10576 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
| 10577 | fh->elf.root.type = bfd_link_hash_undefweak; | |
| 9507a174 AM |
10578 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
| 10579 | fh->was_undefined = 0; | |
| c862ae31 AM |
10580 | } |
| 10581 | ||
| 721956f4 | 10582 | /* Now build the stub. */ |
| e054468f | 10583 | dest = stub_entry->plt_ent->plt.offset & ~1; |
| 176a0d42 | 10584 | if (dest >= (bfd_vma) -2) |
| 721956f4 AM |
10585 | abort (); |
| 10586 | ||
| e054468f | 10587 | plt = htab->plt; |
| 25f23106 AM |
10588 | if (!htab->elf.dynamic_sections_created |
| 10589 | || stub_entry->h == NULL | |
| 10590 | || stub_entry->h->elf.dynindx == -1) | |
| e054468f AM |
10591 | plt = htab->iplt; |
| 10592 | ||
| 10593 | dest += plt->output_offset + plt->output_section->vma; | |
| 10594 | ||
| 10595 | if (stub_entry->h == NULL | |
| 10596 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
| 10597 | { | |
| 10598 | Elf_Internal_Rela rela; | |
| 10599 | bfd_byte *rl; | |
| 10600 | ||
| 10601 | rela.r_offset = dest; | |
| ee67d69a AM |
10602 | if (htab->opd_abi) |
| 10603 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 10604 | else | |
| 10605 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
10606 | rela.r_addend = (stub_entry->target_value |
| 10607 | + stub_entry->target_section->output_offset | |
| 10608 | + stub_entry->target_section->output_section->vma); | |
| 10609 | ||
| 25f23106 AM |
10610 | rl = (htab->reliplt->contents |
| 10611 | + (htab->reliplt->reloc_count++ | |
| 10612 | * sizeof (Elf64_External_Rela))); | |
| 10613 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
| e054468f AM |
10614 | stub_entry->plt_ent->plt.offset |= 1; |
| 10615 | } | |
| 176a0d42 AM |
10616 | |
| 10617 | off = (dest | |
| e054468f | 10618 | - elf_gp (plt->output_section->owner) |
| 176a0d42 | 10619 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10620 | |
| ad8e1ba5 | 10621 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 721956f4 | 10622 | { |
| 25f53a85 | 10623 | info->callbacks->einfo |
| bc30df16 | 10624 | (_("%P: linkage table error against `%T'\n"), |
| e054468f AM |
10625 | stub_entry->h != NULL |
| 10626 | ? stub_entry->h->elf.root.root.string | |
| 10627 | : "<local sym>"); | |
| 721956f4 | 10628 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
10629 | htab->stub_error = TRUE; |
| 10630 | return FALSE; | |
| 721956f4 AM |
10631 | } |
| 10632 | ||
| 794e51c0 AM |
10633 | if (htab->plt_stub_align != 0) |
| 10634 | { | |
| 10635 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
| 10636 | ||
| 10637 | stub_entry->stub_sec->size += pad; | |
| 10638 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
| 10639 | loc += pad; | |
| 10640 | } | |
| 10641 | ||
| 176a0d42 AM |
10642 | r = NULL; |
| 10643 | if (info->emitrelocations) | |
| 10644 | { | |
| 10645 | r = get_relocs (stub_entry->stub_sec, | |
| c7131b65 AM |
10646 | (2 |
| 10647 | + (PPC_HA (off) != 0) | |
| 10648 | + (htab->plt_static_chain | |
| 10649 | && PPC_HA (off + 16) == PPC_HA (off)))); | |
| 176a0d42 AM |
10650 | if (r == NULL) |
| 10651 | return FALSE; | |
| 10652 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
10653 | if (bfd_big_endian (info->output_bfd)) |
| 10654 | r[0].r_offset += 2; | |
| 176a0d42 AM |
10655 | r[0].r_addend = dest; |
| 10656 | } | |
| a7f2871e AM |
10657 | if (stub_entry->h != NULL |
| 10658 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 10659 | || stub_entry->h == htab->tls_get_addr) | |
| 10660 | && !htab->no_tls_get_addr_opt) | |
| 794e51c0 | 10661 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
| a7f2871e | 10662 | else |
| 794e51c0 | 10663 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
| 721956f4 AM |
10664 | size = p - loc; |
| 10665 | break; | |
| 10666 | ||
| 10667 | default: | |
| 10668 | BFD_FAIL (); | |
| b34976b6 | 10669 | return FALSE; |
| 721956f4 AM |
10670 | } |
| 10671 | ||
| eea6121a | 10672 | stub_entry->stub_sec->size += size; |
| 97b639ba | 10673 | |
| ee75fd95 | 10674 | if (htab->emit_stub_syms) |
| 97b639ba AM |
10675 | { |
| 10676 | struct elf_link_hash_entry *h; | |
| ee75fd95 AM |
10677 | size_t len1, len2; |
| 10678 | char *name; | |
| 10679 | const char *const stub_str[] = { "long_branch", | |
| 10680 | "long_branch_r2off", | |
| 10681 | "plt_branch", | |
| 10682 | "plt_branch_r2off", | |
| 794e51c0 | 10683 | "plt_call", |
| ee75fd95 AM |
10684 | "plt_call" }; |
| 10685 | ||
| 10686 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
| 10687 | len2 = strlen (stub_entry->root.string); | |
| 10688 | name = bfd_malloc (len1 + len2 + 2); | |
| 10689 | if (name == NULL) | |
| 10690 | return FALSE; | |
| 10691 | memcpy (name, stub_entry->root.string, 9); | |
| 10692 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
| 10693 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
| 10694 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 97b639ba AM |
10695 | if (h == NULL) |
| 10696 | return FALSE; | |
| 10697 | if (h->root.type == bfd_link_hash_new) | |
| 10698 | { | |
| 10699 | h->root.type = bfd_link_hash_defined; | |
| 10700 | h->root.u.def.section = stub_entry->stub_sec; | |
| 10701 | h->root.u.def.value = stub_entry->stub_offset; | |
| f5385ebf AM |
10702 | h->ref_regular = 1; |
| 10703 | h->def_regular = 1; | |
| 10704 | h->ref_regular_nonweak = 1; | |
| 10705 | h->forced_local = 1; | |
| 10706 | h->non_elf = 0; | |
| 97b639ba AM |
10707 | } |
| 10708 | } | |
| 10709 | ||
| b34976b6 | 10710 | return TRUE; |
| 721956f4 AM |
10711 | } |
| 10712 | ||
| 10713 | /* As above, but don't actually build the stub. Just bump offset so | |
| 10714 | we know stub section sizes, and select plt_branch stubs where | |
| 10715 | long_branch stubs won't do. */ | |
| 10716 | ||
| b34976b6 | 10717 | static bfd_boolean |
| 4ce794b7 | 10718 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 721956f4 AM |
10719 | { |
| 10720 | struct ppc_stub_hash_entry *stub_entry; | |
| 63bc6f6c | 10721 | struct bfd_link_info *info; |
| 721956f4 AM |
10722 | struct ppc_link_hash_table *htab; |
| 10723 | bfd_vma off; | |
| 10724 | int size; | |
| 10725 | ||
| 10726 | /* Massage our args to the form they really have. */ | |
| 10727 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 63bc6f6c AM |
10728 | info = in_arg; |
| 10729 | ||
| 10730 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
10731 | if (htab == NULL) |
| 10732 | return FALSE; | |
| 721956f4 | 10733 | |
| 794e51c0 AM |
10734 | if (stub_entry->stub_type == ppc_stub_plt_call |
| 10735 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 721956f4 | 10736 | { |
| e054468f AM |
10737 | asection *plt; |
| 10738 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
| 58ac9f71 | 10739 | if (off >= (bfd_vma) -2) |
| 411e1bfb | 10740 | abort (); |
| e054468f | 10741 | plt = htab->plt; |
| 25f23106 AM |
10742 | if (!htab->elf.dynamic_sections_created |
| 10743 | || stub_entry->h == NULL | |
| 10744 | || stub_entry->h->elf.dynindx == -1) | |
| e054468f AM |
10745 | plt = htab->iplt; |
| 10746 | off += (plt->output_offset | |
| 10747 | + plt->output_section->vma | |
| 10748 | - elf_gp (plt->output_section->owner) | |
| ad8e1ba5 | 10749 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10750 | |
| 794e51c0 AM |
10751 | size = plt_stub_size (htab, stub_entry, off); |
| 10752 | if (htab->plt_stub_align) | |
| 10753 | size += plt_stub_pad (htab, stub_entry, off); | |
| 176a0d42 AM |
10754 | if (info->emitrelocations) |
| 10755 | { | |
| 10756 | stub_entry->stub_sec->reloc_count | |
| b9e5796b AM |
10757 | += ((PPC_HA (off) != 0) |
| 10758 | + (htab->opd_abi | |
| 10759 | ? 2 + (htab->plt_static_chain | |
| 10760 | && PPC_HA (off + 16) == PPC_HA (off)) | |
| 10761 | : 1)); | |
| 176a0d42 AM |
10762 | stub_entry->stub_sec->flags |= SEC_RELOC; |
| 10763 | } | |
| 721956f4 AM |
10764 | } |
| 10765 | else | |
| 10766 | { | |
| ad8e1ba5 AM |
10767 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
| 10768 | variants. */ | |
| ac2df442 | 10769 | bfd_vma r2off = 0; |
| 6911b7dc | 10770 | bfd_vma local_off = 0; |
| ac2df442 | 10771 | |
| 721956f4 AM |
10772 | off = (stub_entry->target_value |
| 10773 | + stub_entry->target_section->output_offset | |
| 10774 | + stub_entry->target_section->output_section->vma); | |
| eea6121a | 10775 | off -= (stub_entry->stub_sec->size |
| 721956f4 AM |
10776 | + stub_entry->stub_sec->output_offset |
| 10777 | + stub_entry->stub_sec->output_section->vma); | |
| 10778 | ||
| ad8e1ba5 AM |
10779 | /* Reset the stub type from the plt variant in case we now |
| 10780 | can reach with a shorter stub. */ | |
| 10781 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
| 10782 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
| 10783 | ||
| 10784 | size = 4; | |
| 10785 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| 10786 | { | |
| 25f53a85 | 10787 | r2off = get_r2off (info, stub_entry); |
| b9e5796b | 10788 | if (r2off == 0 && htab->opd_abi) |
| aa374f67 AM |
10789 | { |
| 10790 | htab->stub_error = TRUE; | |
| 10791 | return FALSE; | |
| 10792 | } | |
| ac2df442 AM |
10793 | size = 12; |
| 10794 | if (PPC_HA (r2off) != 0) | |
| 10795 | size = 16; | |
| 10796 | off -= size - 4; | |
| ad8e1ba5 AM |
10797 | } |
| 10798 | ||
| 6911b7dc AM |
10799 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
| 10800 | ||
| b9e5796b AM |
10801 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
| 10802 | Do the same for -R objects without function descriptors. */ | |
| 10803 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
| 10804 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
| 10805 | && r2off == 0)) | |
| 721956f4 AM |
10806 | { |
| 10807 | struct ppc_branch_hash_entry *br_entry; | |
| 10808 | ||
| 10809 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
| 10810 | stub_entry->root.string + 9, | |
| b34976b6 | 10811 | TRUE, FALSE); |
| 721956f4 AM |
10812 | if (br_entry == NULL) |
| 10813 | { | |
| 8de848d8 | 10814 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
| 25f53a85 | 10815 | stub_entry->root.string); |
| b34976b6 AM |
10816 | htab->stub_error = TRUE; |
| 10817 | return FALSE; | |
| 721956f4 AM |
10818 | } |
| 10819 | ||
| 10820 | if (br_entry->iter != htab->stub_iteration) | |
| 10821 | { | |
| 10822 | br_entry->iter = htab->stub_iteration; | |
| eea6121a AM |
10823 | br_entry->offset = htab->brlt->size; |
| 10824 | htab->brlt->size += 8; | |
| 63bc6f6c | 10825 | |
| ee75fd95 | 10826 | if (htab->relbrlt != NULL) |
| eea6121a | 10827 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
| 84f5d08e AM |
10828 | else if (info->emitrelocations) |
| 10829 | { | |
| 10830 | htab->brlt->reloc_count += 1; | |
| 10831 | htab->brlt->flags |= SEC_RELOC; | |
| 10832 | } | |
| 721956f4 | 10833 | } |
| ad8e1ba5 AM |
10834 | |
| 10835 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
| ac2df442 AM |
10836 | off = (br_entry->offset |
| 10837 | + htab->brlt->output_offset | |
| 10838 | + htab->brlt->output_section->vma | |
| 10839 | - elf_gp (htab->brlt->output_section->owner) | |
| 10840 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 10841 | ||
| 176a0d42 AM |
10842 | if (info->emitrelocations) |
| 10843 | { | |
| 10844 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
| 10845 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 10846 | } | |
| 10847 | ||
| b9e5796b AM |
10848 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off |
| 10849 | || !htab->opd_abi) | |
| ac2df442 AM |
10850 | { |
| 10851 | size = 12; | |
| 176a0d42 | 10852 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10853 | size = 16; |
| 10854 | } | |
| 10855 | else | |
| 10856 | { | |
| 10857 | size = 20; | |
| 176a0d42 | 10858 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10859 | size += 4; |
| 10860 | ||
| 10861 | if (PPC_HA (r2off) != 0) | |
| 10862 | size += 4; | |
| 10863 | } | |
| 721956f4 | 10864 | } |
| 84f5d08e AM |
10865 | else if (info->emitrelocations) |
| 10866 | { | |
| 10867 | stub_entry->stub_sec->reloc_count += 1; | |
| 10868 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 10869 | } | |
| 721956f4 AM |
10870 | } |
| 10871 | ||
| eea6121a | 10872 | stub_entry->stub_sec->size += size; |
| b34976b6 | 10873 | return TRUE; |
| 721956f4 AM |
10874 | } |
| 10875 | ||
| 10876 | /* Set up various things so that we can make a list of input sections | |
| 10877 | for each output section included in the link. Returns -1 on error, | |
| cedb70c5 | 10878 | 0 when no stubs will be needed, and 1 on success. */ |
| 721956f4 AM |
10879 | |
| 10880 | int | |
| 927be08e AM |
10881 | ppc64_elf_setup_section_lists |
| 10882 | (struct bfd_link_info *info, | |
| 10883 | asection *(*add_stub_section) (const char *, asection *), | |
| 10884 | void (*layout_sections_again) (void)) | |
| 721956f4 AM |
10885 | { |
| 10886 | bfd *input_bfd; | |
| 734b6cf9 | 10887 | int top_id, top_index, id; |
| 721956f4 | 10888 | asection *section; |
| 734b6cf9 | 10889 | asection **input_list; |
| 721956f4 AM |
10890 | bfd_size_type amt; |
| 10891 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 10892 | ||
| 4dfe6ac6 NC |
10893 | if (htab == NULL) |
| 10894 | return -1; | |
| 927be08e AM |
10895 | /* Stash our params away. */ |
| 10896 | htab->add_stub_section = add_stub_section; | |
| 10897 | htab->layout_sections_again = layout_sections_again; | |
| 4c52953f | 10898 | |
| 1e2f5b6e | 10899 | /* Find the top input section id. */ |
| 3d6f9012 | 10900 | for (input_bfd = info->input_bfds, top_id = 3; |
| 721956f4 AM |
10901 | input_bfd != NULL; |
| 10902 | input_bfd = input_bfd->link_next) | |
| 10903 | { | |
| 721956f4 AM |
10904 | for (section = input_bfd->sections; |
| 10905 | section != NULL; | |
| 10906 | section = section->next) | |
| 10907 | { | |
| 10908 | if (top_id < section->id) | |
| 10909 | top_id = section->id; | |
| 10910 | } | |
| 10911 | } | |
| 721956f4 | 10912 | |
| 8f3bab57 | 10913 | htab->top_id = top_id; |
| 721956f4 | 10914 | amt = sizeof (struct map_stub) * (top_id + 1); |
| 4ce794b7 | 10915 | htab->stub_group = bfd_zmalloc (amt); |
| 721956f4 AM |
10916 | if (htab->stub_group == NULL) |
| 10917 | return -1; | |
| 10918 | ||
| 3d6f9012 AM |
10919 | /* Set toc_off for com, und, abs and ind sections. */ |
| 10920 | for (id = 0; id < 3; id++) | |
| 10921 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
| 721956f4 | 10922 | |
| 734b6cf9 AM |
10923 | /* We can't use output_bfd->section_count here to find the top output |
| 10924 | section index as some sections may have been removed, and | |
| 8423293d | 10925 | strip_excluded_output_sections doesn't renumber the indices. */ |
| 927be08e | 10926 | for (section = info->output_bfd->sections, top_index = 0; |
| 734b6cf9 AM |
10927 | section != NULL; |
| 10928 | section = section->next) | |
| 10929 | { | |
| 10930 | if (top_index < section->index) | |
| 10931 | top_index = section->index; | |
| 10932 | } | |
| 10933 | ||
| 10934 | htab->top_index = top_index; | |
| 10935 | amt = sizeof (asection *) * (top_index + 1); | |
| 4ce794b7 | 10936 | input_list = bfd_zmalloc (amt); |
| 734b6cf9 AM |
10937 | htab->input_list = input_list; |
| 10938 | if (input_list == NULL) | |
| 10939 | return -1; | |
| 10940 | ||
| 721956f4 AM |
10941 | return 1; |
| 10942 | } | |
| 10943 | ||
| 927be08e AM |
10944 | /* Set up for first pass at multitoc partitioning. */ |
| 10945 | ||
| 10946 | void | |
| 10947 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
| 10948 | { | |
| 10949 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 10950 | ||
| 1c865ab2 | 10951 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
| 927be08e AM |
10952 | htab->toc_bfd = NULL; |
| 10953 | htab->toc_first_sec = NULL; | |
| 10954 | } | |
| 10955 | ||
| e717da7e AM |
10956 | /* The linker repeatedly calls this function for each TOC input section |
| 10957 | and linker generated GOT section. Group input bfds such that the toc | |
| 927be08e | 10958 | within a group is less than 64k in size. */ |
| ad8e1ba5 | 10959 | |
| 927be08e | 10960 | bfd_boolean |
| 4ce794b7 | 10961 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
| ad8e1ba5 AM |
10962 | { |
| 10963 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| d77c8a4b | 10964 | bfd_vma addr, off, limit; |
| ad8e1ba5 | 10965 | |
| 4dfe6ac6 NC |
10966 | if (htab == NULL) |
| 10967 | return FALSE; | |
| 10968 | ||
| 927be08e | 10969 | if (!htab->second_toc_pass) |
| 4c52953f | 10970 | { |
| 927be08e | 10971 | /* Keep track of the first .toc or .got section for this input bfd. */ |
| a4fd3de5 AM |
10972 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
| 10973 | ||
| 10974 | if (new_bfd) | |
| bf102f86 AM |
10975 | { |
| 10976 | htab->toc_bfd = isec->owner; | |
| 10977 | htab->toc_first_sec = isec; | |
| 10978 | } | |
| 927be08e | 10979 | |
| bf102f86 AM |
10980 | addr = isec->output_offset + isec->output_section->vma; |
| 10981 | off = addr - htab->toc_curr; | |
| d77c8a4b AM |
10982 | limit = 0x80008000; |
| 10983 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
| 10984 | limit = 0x10000; | |
| 10985 | if (off + isec->size > limit) | |
| bf102f86 AM |
10986 | { |
| 10987 | addr = (htab->toc_first_sec->output_offset | |
| 10988 | + htab->toc_first_sec->output_section->vma); | |
| 10989 | htab->toc_curr = addr; | |
| 10990 | } | |
| 99877b66 | 10991 | |
| 927be08e AM |
10992 | /* toc_curr is the base address of this toc group. Set elf_gp |
| 10993 | for the input section to be the offset relative to the | |
| 10994 | output toc base plus 0x8000. Making the input elf_gp an | |
| 10995 | offset allows us to move the toc as a whole without | |
| 10996 | recalculating input elf_gp. */ | |
| 10997 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
| 10998 | off += TOC_BASE_OFF; | |
| 10999 | ||
| 11000 | /* Die if someone uses a linker script that doesn't keep input | |
| 11001 | file .toc and .got together. */ | |
| a4fd3de5 AM |
11002 | if (new_bfd |
| 11003 | && elf_gp (isec->owner) != 0 | |
| 927be08e AM |
11004 | && elf_gp (isec->owner) != off) |
| 11005 | return FALSE; | |
| 11006 | ||
| 11007 | elf_gp (isec->owner) = off; | |
| 11008 | return TRUE; | |
| 4c52953f | 11009 | } |
| 927be08e AM |
11010 | |
| 11011 | /* During the second pass toc_first_sec points to the start of | |
| 11012 | a toc group, and toc_curr is used to track the old elf_gp. | |
| 11013 | We use toc_bfd to ensure we only look at each bfd once. */ | |
| 11014 | if (htab->toc_bfd == isec->owner) | |
| 11015 | return TRUE; | |
| 11016 | htab->toc_bfd = isec->owner; | |
| 11017 | ||
| 11018 | if (htab->toc_first_sec == NULL | |
| 11019 | || htab->toc_curr != elf_gp (isec->owner)) | |
| 11020 | { | |
| 11021 | htab->toc_curr = elf_gp (isec->owner); | |
| 11022 | htab->toc_first_sec = isec; | |
| 11023 | } | |
| 11024 | addr = (htab->toc_first_sec->output_offset | |
| 11025 | + htab->toc_first_sec->output_section->vma); | |
| 11026 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
| 11027 | elf_gp (isec->owner) = off; | |
| 11028 | ||
| 11029 | return TRUE; | |
| ad8e1ba5 AM |
11030 | } |
| 11031 | ||
| 927be08e AM |
11032 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
| 11033 | symbol H. */ | |
| 11034 | ||
| 11035 | static bfd_boolean | |
| 11036 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 11037 | { | |
| 11038 | if (h->root.type == bfd_link_hash_indirect) | |
| 11039 | return TRUE; | |
| 11040 | ||
| 927be08e AM |
11041 | merge_got_entries (&h->got.glist); |
| 11042 | ||
| 11043 | return TRUE; | |
| 11044 | } | |
| 11045 | ||
| 11046 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
| 11047 | symbol H. */ | |
| 11048 | ||
| 11049 | static bfd_boolean | |
| 11050 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
| 11051 | { | |
| 11052 | struct got_entry *gent; | |
| 11053 | ||
| 11054 | if (h->root.type == bfd_link_hash_indirect) | |
| 11055 | return TRUE; | |
| 11056 | ||
| 927be08e AM |
11057 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 11058 | if (!gent->is_indirect) | |
| 11059 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
| 11060 | return TRUE; | |
| 11061 | } | |
| 11062 | ||
| 11063 | /* Called on the first multitoc pass after the last call to | |
| 11064 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
| 11065 | entries. */ | |
| 11066 | ||
| 11067 | bfd_boolean | |
| 11068 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
| ad8e1ba5 AM |
11069 | { |
| 11070 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 927be08e AM |
11071 | struct bfd *ibfd, *ibfd2; |
| 11072 | bfd_boolean done_something; | |
| 11073 | ||
| 11074 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
| ad8e1ba5 | 11075 | |
| 7865406b AM |
11076 | if (!htab->do_multi_toc) |
| 11077 | return FALSE; | |
| 11078 | ||
| d0fae19d | 11079 | /* Merge global sym got entries within a toc group. */ |
| 927be08e AM |
11080 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
| 11081 | ||
| 11082 | /* And tlsld_got. */ | |
| 11083 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11084 | { | |
| 11085 | struct got_entry *ent, *ent2; | |
| 11086 | ||
| 11087 | if (!is_ppc64_elf (ibfd)) | |
| 11088 | continue; | |
| 11089 | ||
| 11090 | ent = ppc64_tlsld_got (ibfd); | |
| 11091 | if (!ent->is_indirect | |
| 11092 | && ent->got.offset != (bfd_vma) -1) | |
| 11093 | { | |
| 11094 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
| 11095 | { | |
| 11096 | if (!is_ppc64_elf (ibfd2)) | |
| 11097 | continue; | |
| 11098 | ||
| 11099 | ent2 = ppc64_tlsld_got (ibfd2); | |
| 11100 | if (!ent2->is_indirect | |
| 11101 | && ent2->got.offset != (bfd_vma) -1 | |
| 11102 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
| 11103 | { | |
| 11104 | ent2->is_indirect = TRUE; | |
| 11105 | ent2->got.ent = ent; | |
| 11106 | } | |
| 11107 | } | |
| 11108 | } | |
| 11109 | } | |
| 11110 | ||
| 11111 | /* Zap sizes of got sections. */ | |
| 11112 | htab->reliplt->rawsize = htab->reliplt->size; | |
| 11113 | htab->reliplt->size -= htab->got_reli_size; | |
| 11114 | htab->got_reli_size = 0; | |
| 11115 | ||
| 11116 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11117 | { | |
| 11118 | asection *got, *relgot; | |
| 11119 | ||
| 11120 | if (!is_ppc64_elf (ibfd)) | |
| 11121 | continue; | |
| 11122 | ||
| 11123 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11124 | if (got != NULL) | |
| 11125 | { | |
| 11126 | got->rawsize = got->size; | |
| 11127 | got->size = 0; | |
| 11128 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
| 11129 | relgot->rawsize = relgot->size; | |
| 11130 | relgot->size = 0; | |
| 11131 | } | |
| 11132 | } | |
| 11133 | ||
| 11134 | /* Now reallocate the got, local syms first. We don't need to | |
| 11135 | allocate section contents again since we never increase size. */ | |
| 11136 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11137 | { | |
| 11138 | struct got_entry **lgot_ents; | |
| 11139 | struct got_entry **end_lgot_ents; | |
| 11140 | struct plt_entry **local_plt; | |
| 11141 | struct plt_entry **end_local_plt; | |
| f961d9dd | 11142 | unsigned char *lgot_masks; |
| 927be08e AM |
11143 | bfd_size_type locsymcount; |
| 11144 | Elf_Internal_Shdr *symtab_hdr; | |
| 19e08130 | 11145 | asection *s; |
| 927be08e AM |
11146 | |
| 11147 | if (!is_ppc64_elf (ibfd)) | |
| 11148 | continue; | |
| 11149 | ||
| 11150 | lgot_ents = elf_local_got_ents (ibfd); | |
| 11151 | if (!lgot_ents) | |
| 11152 | continue; | |
| 11153 | ||
| 11154 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 11155 | locsymcount = symtab_hdr->sh_info; | |
| 11156 | end_lgot_ents = lgot_ents + locsymcount; | |
| 11157 | local_plt = (struct plt_entry **) end_lgot_ents; | |
| 11158 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 11159 | lgot_masks = (unsigned char *) end_local_plt; |
| 927be08e | 11160 | s = ppc64_elf_tdata (ibfd)->got; |
| 927be08e AM |
11161 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 11162 | { | |
| 11163 | struct got_entry *ent; | |
| 11164 | ||
| 11165 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
| d0fae19d | 11166 | { |
| 19e08130 AM |
11167 | unsigned int ent_size = 8; |
| 11168 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 11169 | ||
| d0fae19d AM |
11170 | ent->got.offset = s->size; |
| 11171 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
| d0fae19d | 11172 | { |
| 19e08130 AM |
11173 | ent_size *= 2; |
| 11174 | rel_size *= 2; | |
| 11175 | } | |
| 11176 | s->size += ent_size; | |
| 11177 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 11178 | { | |
| 11179 | htab->reliplt->size += rel_size; | |
| 11180 | htab->got_reli_size += rel_size; | |
| 11181 | } | |
| 11182 | else if (info->shared) | |
| 11183 | { | |
| 11184 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11185 | srel->size += rel_size; | |
| d0fae19d AM |
11186 | } |
| 11187 | } | |
| 927be08e AM |
11188 | } |
| 11189 | } | |
| 11190 | ||
| 11191 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
| 11192 | ||
| 11193 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11194 | { | |
| 11195 | struct got_entry *ent; | |
| 11196 | ||
| 11197 | if (!is_ppc64_elf (ibfd)) | |
| 11198 | continue; | |
| 11199 | ||
| 11200 | ent = ppc64_tlsld_got (ibfd); | |
| 11201 | if (!ent->is_indirect | |
| 11202 | && ent->got.offset != (bfd_vma) -1) | |
| 11203 | { | |
| 11204 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
| 11205 | ent->got.offset = s->size; | |
| 11206 | s->size += 16; | |
| 11207 | if (info->shared) | |
| 11208 | { | |
| 11209 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11210 | srel->size += sizeof (Elf64_External_Rela); | |
| 11211 | } | |
| 11212 | } | |
| 11213 | } | |
| 11214 | ||
| 11215 | done_something = htab->reliplt->rawsize != htab->reliplt->size; | |
| 11216 | if (!done_something) | |
| 11217 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 11218 | { | |
| 11219 | asection *got; | |
| 11220 | ||
| 11221 | if (!is_ppc64_elf (ibfd)) | |
| 11222 | continue; | |
| 11223 | ||
| 11224 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11225 | if (got != NULL) | |
| 11226 | { | |
| 11227 | done_something = got->rawsize != got->size; | |
| 11228 | if (done_something) | |
| 11229 | break; | |
| 11230 | } | |
| 11231 | } | |
| 11232 | ||
| 11233 | if (done_something) | |
| 11234 | (*htab->layout_sections_again) (); | |
| 11235 | ||
| 11236 | /* Set up for second pass over toc sections to recalculate elf_gp | |
| 11237 | on input sections. */ | |
| 11238 | htab->toc_bfd = NULL; | |
| 11239 | htab->toc_first_sec = NULL; | |
| 11240 | htab->second_toc_pass = TRUE; | |
| 11241 | return done_something; | |
| 11242 | } | |
| 11243 | ||
| 11244 | /* Called after second pass of multitoc partitioning. */ | |
| 11245 | ||
| 11246 | void | |
| 11247 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
| 11248 | { | |
| 11249 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11250 | ||
| 11251 | /* After the second pass, toc_curr tracks the TOC offset used | |
| 11252 | for code sections below in ppc64_elf_next_input_section. */ | |
| 3d6f9012 | 11253 | htab->toc_curr = TOC_BASE_OFF; |
| ad8e1ba5 AM |
11254 | } |
| 11255 | ||
| 9b5ecbd0 AM |
11256 | /* No toc references were found in ISEC. If the code in ISEC makes no |
| 11257 | calls, then there's no need to use toc adjusting stubs when branching | |
| 11258 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
| 4c52953f AM |
11259 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
| 11260 | needed, and 2 if a cyclical call-graph was found but no other reason | |
| 11261 | for a stub was detected. If called from the top level, a return of | |
| 11262 | 2 means the same as a return of 0. */ | |
| 9b5ecbd0 AM |
11263 | |
| 11264 | static int | |
| 4ce794b7 | 11265 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
| 9b5ecbd0 | 11266 | { |
| 9b5ecbd0 | 11267 | int ret; |
| 70cc837d AM |
11268 | |
| 11269 | /* Mark this section as checked. */ | |
| 11270 | isec->call_check_done = 1; | |
| 9b5ecbd0 | 11271 | |
| 772119ce AM |
11272 | /* We know none of our code bearing sections will need toc stubs. */ |
| 11273 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
| 11274 | return 0; | |
| 11275 | ||
| eea6121a | 11276 | if (isec->size == 0) |
| 082c50f8 AM |
11277 | return 0; |
| 11278 | ||
| 4c52953f AM |
11279 | if (isec->output_section == NULL) |
| 11280 | return 0; | |
| 11281 | ||
| 4c52953f | 11282 | ret = 0; |
| 70cc837d | 11283 | if (isec->reloc_count != 0) |
| 9b5ecbd0 | 11284 | { |
| 70cc837d AM |
11285 | Elf_Internal_Rela *relstart, *rel; |
| 11286 | Elf_Internal_Sym *local_syms; | |
| 11287 | struct ppc_link_hash_table *htab; | |
| 2917689a | 11288 | |
| 70cc837d AM |
11289 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
| 11290 | info->keep_memory); | |
| 11291 | if (relstart == NULL) | |
| 11292 | return -1; | |
| 90aecf7a | 11293 | |
| 70cc837d AM |
11294 | /* Look for branches to outside of this section. */ |
| 11295 | local_syms = NULL; | |
| 11296 | htab = ppc_hash_table (info); | |
| 11297 | if (htab == NULL) | |
| 11298 | return -1; | |
| 4c52953f | 11299 | |
| 70cc837d | 11300 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
| 4c52953f | 11301 | { |
| 70cc837d AM |
11302 | enum elf_ppc64_reloc_type r_type; |
| 11303 | unsigned long r_symndx; | |
| 11304 | struct elf_link_hash_entry *h; | |
| 11305 | struct ppc_link_hash_entry *eh; | |
| 11306 | Elf_Internal_Sym *sym; | |
| 11307 | asection *sym_sec; | |
| 11308 | struct _opd_sec_data *opd; | |
| 11309 | bfd_vma sym_value; | |
| 11310 | bfd_vma dest; | |
| 11311 | ||
| 11312 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 11313 | if (r_type != R_PPC64_REL24 | |
| 11314 | && r_type != R_PPC64_REL14 | |
| 11315 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 11316 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 11317 | continue; | |
| 4c52953f | 11318 | |
| 70cc837d AM |
11319 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 11320 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
| 11321 | isec->owner)) | |
| 4c52953f | 11322 | { |
| 70cc837d AM |
11323 | ret = -1; |
| 11324 | break; | |
| 11325 | } | |
| 4c52953f | 11326 | |
| 70cc837d AM |
11327 | /* Calls to dynamic lib functions go through a plt call stub |
| 11328 | that uses r2. */ | |
| 11329 | eh = (struct ppc_link_hash_entry *) h; | |
| 11330 | if (eh != NULL | |
| 11331 | && (eh->elf.plt.plist != NULL | |
| 11332 | || (eh->oh != NULL | |
| 11333 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
| 11334 | { | |
| 11335 | ret = 1; | |
| 11336 | break; | |
| 4c52953f AM |
11337 | } |
| 11338 | ||
| 70cc837d AM |
11339 | if (sym_sec == NULL) |
| 11340 | /* Ignore other undefined symbols. */ | |
| 4c52953f | 11341 | continue; |
| 4c52953f | 11342 | |
| 70cc837d AM |
11343 | /* Assume branches to other sections not included in the |
| 11344 | link need stubs too, to cover -R and absolute syms. */ | |
| 11345 | if (sym_sec->output_section == NULL) | |
| 11346 | { | |
| 11347 | ret = 1; | |
| 11348 | break; | |
| 11349 | } | |
| 4c52953f | 11350 | |
| 70cc837d AM |
11351 | if (h == NULL) |
| 11352 | sym_value = sym->st_value; | |
| 11353 | else | |
| 11354 | { | |
| 11355 | if (h->root.type != bfd_link_hash_defined | |
| 11356 | && h->root.type != bfd_link_hash_defweak) | |
| 11357 | abort (); | |
| 11358 | sym_value = h->root.u.def.value; | |
| 11359 | } | |
| 11360 | sym_value += rel->r_addend; | |
| 4c52953f | 11361 | |
| 70cc837d AM |
11362 | /* If this branch reloc uses an opd sym, find the code section. */ |
| 11363 | opd = get_opd_info (sym_sec); | |
| 11364 | if (opd != NULL) | |
| 11365 | { | |
| 11366 | if (h == NULL && opd->adjust != NULL) | |
| 11367 | { | |
| 11368 | long adjust; | |
| 4c52953f | 11369 | |
| 70cc837d AM |
11370 | adjust = opd->adjust[sym->st_value / 8]; |
| 11371 | if (adjust == -1) | |
| 11372 | /* Assume deleted functions won't ever be called. */ | |
| 11373 | continue; | |
| 11374 | sym_value += adjust; | |
| 11375 | } | |
| 4c52953f | 11376 | |
| aef36ac1 AM |
11377 | dest = opd_entry_value (sym_sec, sym_value, |
| 11378 | &sym_sec, NULL, FALSE); | |
| 70cc837d AM |
11379 | if (dest == (bfd_vma) -1) |
| 11380 | continue; | |
| 11381 | } | |
| 11382 | else | |
| 11383 | dest = (sym_value | |
| 11384 | + sym_sec->output_offset | |
| 11385 | + sym_sec->output_section->vma); | |
| 4c52953f | 11386 | |
| 70cc837d AM |
11387 | /* Ignore branch to self. */ |
| 11388 | if (sym_sec == isec) | |
| 11389 | continue; | |
| 4c52953f | 11390 | |
| 70cc837d AM |
11391 | /* If the called function uses the toc, we need a stub. */ |
| 11392 | if (sym_sec->has_toc_reloc | |
| 11393 | || sym_sec->makes_toc_func_call) | |
| 4c52953f | 11394 | { |
| 70cc837d | 11395 | ret = 1; |
| 4c52953f AM |
11396 | break; |
| 11397 | } | |
| 70cc837d AM |
11398 | |
| 11399 | /* Assume any branch that needs a long branch stub might in fact | |
| 11400 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
| 11401 | else if (dest - (isec->output_offset | |
| 11402 | + isec->output_section->vma | |
| 6911b7dc AM |
11403 | + rel->r_offset) + (1 << 25) |
| 11404 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
| 11405 | ? h->other | |
| 11406 | : sym->st_other)) | |
| 4c52953f | 11407 | { |
| 70cc837d AM |
11408 | ret = 1; |
| 11409 | break; | |
| 11410 | } | |
| 11411 | ||
| 11412 | /* If calling back to a section in the process of being | |
| 11413 | tested, we can't say for sure that no toc adjusting stubs | |
| 11414 | are needed, so don't return zero. */ | |
| 11415 | else if (sym_sec->call_check_in_progress) | |
| 11416 | ret = 2; | |
| 11417 | ||
| 11418 | /* Branches to another section that itself doesn't have any TOC | |
| 11419 | references are OK. Recursively call ourselves to check. */ | |
| 11420 | else if (!sym_sec->call_check_done) | |
| 11421 | { | |
| 11422 | int recur; | |
| 11423 | ||
| 11424 | /* Mark current section as indeterminate, so that other | |
| 11425 | sections that call back to current won't be marked as | |
| 11426 | known. */ | |
| 11427 | isec->call_check_in_progress = 1; | |
| 11428 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
| 11429 | isec->call_check_in_progress = 0; | |
| 11430 | ||
| 4c52953f AM |
11431 | if (recur != 0) |
| 11432 | { | |
| 70cc837d AM |
11433 | ret = recur; |
| 11434 | if (recur != 2) | |
| 11435 | break; | |
| 4c52953f AM |
11436 | } |
| 11437 | } | |
| 4c52953f | 11438 | } |
| 70cc837d AM |
11439 | |
| 11440 | if (local_syms != NULL | |
| 11441 | && (elf_symtab_hdr (isec->owner).contents | |
| 11442 | != (unsigned char *) local_syms)) | |
| 11443 | free (local_syms); | |
| 11444 | if (elf_section_data (isec)->relocs != relstart) | |
| 11445 | free (relstart); | |
| 9b5ecbd0 AM |
11446 | } |
| 11447 | ||
| 70cc837d AM |
11448 | if ((ret & 1) == 0 |
| 11449 | && isec->map_head.s != NULL | |
| 11450 | && (strcmp (isec->output_section->name, ".init") == 0 | |
| 11451 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
| 11452 | { | |
| 11453 | if (isec->map_head.s->has_toc_reloc | |
| 11454 | || isec->map_head.s->makes_toc_func_call) | |
| 11455 | ret = 1; | |
| 11456 | else if (!isec->map_head.s->call_check_done) | |
| 11457 | { | |
| 11458 | int recur; | |
| 11459 | isec->call_check_in_progress = 1; | |
| 11460 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
| 11461 | isec->call_check_in_progress = 0; | |
| 11462 | if (recur != 0) | |
| 11463 | ret = recur; | |
| 11464 | } | |
| 11465 | } | |
| 11466 | ||
| 11467 | if (ret == 1) | |
| 11468 | isec->makes_toc_func_call = 1; | |
| 4c52953f | 11469 | |
| 9b5ecbd0 AM |
11470 | return ret; |
| 11471 | } | |
| 11472 | ||
| 721956f4 AM |
11473 | /* The linker repeatedly calls this function for each input section, |
| 11474 | in the order that input sections are linked into output sections. | |
| 11475 | Build lists of input sections to determine groupings between which | |
| 11476 | we may insert linker stubs. */ | |
| 11477 | ||
| 9b5ecbd0 | 11478 | bfd_boolean |
| 4ce794b7 | 11479 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
| 721956f4 AM |
11480 | { |
| 11481 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11482 | ||
| 4dfe6ac6 NC |
11483 | if (htab == NULL) |
| 11484 | return FALSE; | |
| 11485 | ||
| 734b6cf9 AM |
11486 | if ((isec->output_section->flags & SEC_CODE) != 0 |
| 11487 | && isec->output_section->index <= htab->top_index) | |
| 721956f4 | 11488 | { |
| 734b6cf9 | 11489 | asection **list = htab->input_list + isec->output_section->index; |
| 3d6f9012 | 11490 | /* Steal the link_sec pointer for our list. */ |
| 721956f4 | 11491 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
| 3d6f9012 AM |
11492 | /* This happens to make the list in reverse order, |
| 11493 | which is what we want. */ | |
| 734b6cf9 AM |
11494 | PREV_SEC (isec) = *list; |
| 11495 | *list = isec; | |
| 721956f4 | 11496 | } |
| ad8e1ba5 | 11497 | |
| 4c52953f | 11498 | if (htab->multi_toc_needed) |
| 9b5ecbd0 | 11499 | { |
| 4c52953f AM |
11500 | /* If a code section has a function that uses the TOC then we need |
| 11501 | to use the right TOC (obviously). Also, make sure that .opd gets | |
| 11502 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
| f94498ff AM |
11503 | can't find their function symbol (shouldn't ever happen now). |
| 11504 | Also specially treat .fixup for the linux kernel. .fixup | |
| 11505 | contains branches, but only back to the function that hit an | |
| 11506 | exception. */ | |
| 11507 | if (isec->has_toc_reloc | |
| 11508 | || (isec->flags & SEC_CODE) == 0 | |
| 11509 | || strcmp (isec->name, ".fixup") == 0) | |
| 4c52953f AM |
11510 | { |
| 11511 | if (elf_gp (isec->owner) != 0) | |
| 11512 | htab->toc_curr = elf_gp (isec->owner); | |
| 11513 | } | |
| 6683a28d AM |
11514 | else |
| 11515 | { | |
| 11516 | if (!isec->call_check_done | |
| 11517 | && toc_adjusting_stub_needed (info, isec) < 0) | |
| 11518 | return FALSE; | |
| 11519 | /* If we make a local call from this section, ie. a branch | |
| 11520 | without a following nop, then we have no place to put a | |
| 11521 | toc restoring insn. We must use the same toc group as | |
| 11522 | the callee. | |
| 11523 | Testing makes_toc_func_call actually tests for *any* | |
| 11524 | calls to functions that need a good toc pointer. A more | |
| 11525 | precise test would be better, as this one will set | |
| 11526 | incorrect values for pasted .init/.fini fragments. | |
| 11527 | (Fixed later in check_pasted_section.) */ | |
| 11528 | if (isec->makes_toc_func_call | |
| 11529 | && elf_gp (isec->owner) != 0) | |
| 11530 | htab->toc_curr = elf_gp (isec->owner); | |
| 11531 | } | |
| 9b5ecbd0 | 11532 | } |
| ad8e1ba5 AM |
11533 | |
| 11534 | /* Functions that don't use the TOC can belong in any TOC group. | |
| 6683a28d | 11535 | Use the last TOC base. */ |
| ad8e1ba5 | 11536 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
| 9b5ecbd0 | 11537 | return TRUE; |
| 721956f4 AM |
11538 | } |
| 11539 | ||
| 70cc837d AM |
11540 | /* Check that all .init and .fini sections use the same toc, if they |
| 11541 | have toc relocs. */ | |
| 11542 | ||
| 11543 | static bfd_boolean | |
| 11544 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
| 11545 | { | |
| 11546 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
| 11547 | ||
| 11548 | if (o != NULL) | |
| 11549 | { | |
| 11550 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11551 | bfd_vma toc_off = 0; | |
| 11552 | asection *i; | |
| 11553 | ||
| 11554 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11555 | if (i->has_toc_reloc) | |
| 11556 | { | |
| 11557 | if (toc_off == 0) | |
| 11558 | toc_off = htab->stub_group[i->id].toc_off; | |
| 11559 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
| 11560 | return FALSE; | |
| 11561 | } | |
| 6683a28d AM |
11562 | |
| 11563 | if (toc_off == 0) | |
| 11564 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11565 | if (i->makes_toc_func_call) | |
| 11566 | { | |
| 11567 | toc_off = htab->stub_group[i->id].toc_off; | |
| 11568 | break; | |
| 11569 | } | |
| 11570 | ||
| 70cc837d AM |
11571 | /* Make sure the whole pasted function uses the same toc offset. */ |
| 11572 | if (toc_off != 0) | |
| 11573 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11574 | htab->stub_group[i->id].toc_off = toc_off; | |
| 11575 | } | |
| 11576 | return TRUE; | |
| 11577 | } | |
| 11578 | ||
| 11579 | bfd_boolean | |
| 11580 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
| 11581 | { | |
| 11582 | return (check_pasted_section (info, ".init") | |
| 11583 | & check_pasted_section (info, ".fini")); | |
| 11584 | } | |
| 11585 | ||
| 721956f4 AM |
11586 | /* See whether we can group stub sections together. Grouping stub |
| 11587 | sections may result in fewer stubs. More importantly, we need to | |
| 11588 | put all .init* and .fini* stubs at the beginning of the .init or | |
| 11589 | .fini output sections respectively, because glibc splits the | |
| 11590 | _init and _fini functions into multiple parts. Putting a stub in | |
| 11591 | the middle of a function is not a good idea. */ | |
| 11592 | ||
| 11593 | static void | |
| 4ce794b7 AM |
11594 | group_sections (struct ppc_link_hash_table *htab, |
| 11595 | bfd_size_type stub_group_size, | |
| 11596 | bfd_boolean stubs_always_before_branch) | |
| 721956f4 | 11597 | { |
| 7c8fe5c4 AM |
11598 | asection **list; |
| 11599 | bfd_size_type stub14_group_size; | |
| 11600 | bfd_boolean suppress_size_errors; | |
| 11601 | ||
| 11602 | suppress_size_errors = FALSE; | |
| 11603 | stub14_group_size = stub_group_size; | |
| 11604 | if (stub_group_size == 1) | |
| 11605 | { | |
| 11606 | /* Default values. */ | |
| 11607 | if (stubs_always_before_branch) | |
| 11608 | { | |
| 11609 | stub_group_size = 0x1e00000; | |
| 11610 | stub14_group_size = 0x7800; | |
| 11611 | } | |
| 11612 | else | |
| 11613 | { | |
| 11614 | stub_group_size = 0x1c00000; | |
| 11615 | stub14_group_size = 0x7000; | |
| 11616 | } | |
| 11617 | suppress_size_errors = TRUE; | |
| 11618 | } | |
| 11619 | ||
| 11620 | list = htab->input_list + htab->top_index; | |
| 734b6cf9 | 11621 | do |
| 721956f4 | 11622 | { |
| 734b6cf9 AM |
11623 | asection *tail = *list; |
| 11624 | while (tail != NULL) | |
| 721956f4 | 11625 | { |
| 734b6cf9 AM |
11626 | asection *curr; |
| 11627 | asection *prev; | |
| 11628 | bfd_size_type total; | |
| 11629 | bfd_boolean big_sec; | |
| 11630 | bfd_vma curr_toc; | |
| 11631 | ||
| 11632 | curr = tail; | |
| eea6121a | 11633 | total = tail->size; |
| 6bee8834 AM |
11634 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
| 11635 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
| 7c8fe5c4 AM |
11636 | ? stub14_group_size : stub_group_size); |
| 11637 | if (big_sec && !suppress_size_errors) | |
| 5c3dead3 AM |
11638 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
| 11639 | tail->owner, tail); | |
| 734b6cf9 AM |
11640 | curr_toc = htab->stub_group[tail->id].toc_off; |
| 11641 | ||
| 11642 | while ((prev = PREV_SEC (curr)) != NULL | |
| 11643 | && ((total += curr->output_offset - prev->output_offset) | |
| 6bee8834 AM |
11644 | < (ppc64_elf_section_data (prev) != NULL |
| 11645 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 7c8fe5c4 | 11646 | ? stub14_group_size : stub_group_size)) |
| ad8e1ba5 | 11647 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
11648 | curr = prev; |
| 11649 | ||
| 11650 | /* OK, the size from the start of CURR to the end is less | |
| 11651 | than stub_group_size and thus can be handled by one stub | |
| 11652 | section. (or the tail section is itself larger than | |
| 11653 | stub_group_size, in which case we may be toast.) We | |
| 11654 | should really be keeping track of the total size of stubs | |
| 11655 | added here, as stubs contribute to the final output | |
| 11656 | section size. That's a little tricky, and this way will | |
| 11657 | only break if stubs added make the total size more than | |
| 11658 | 2^25, ie. for the default stub_group_size, if stubs total | |
| 11659 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
| 11660 | do | |
| 721956f4 AM |
11661 | { |
| 11662 | prev = PREV_SEC (tail); | |
| 734b6cf9 | 11663 | /* Set up this stub group. */ |
| 721956f4 AM |
11664 | htab->stub_group[tail->id].link_sec = curr; |
| 11665 | } | |
| 734b6cf9 AM |
11666 | while (tail != curr && (tail = prev) != NULL); |
| 11667 | ||
| 11668 | /* But wait, there's more! Input sections up to stub_group_size | |
| 11669 | bytes before the stub section can be handled by it too. | |
| 11670 | Don't do this if we have a really large section after the | |
| 11671 | stubs, as adding more stubs increases the chance that | |
| 11672 | branches may not reach into the stub section. */ | |
| 11673 | if (!stubs_always_before_branch && !big_sec) | |
| 11674 | { | |
| 11675 | total = 0; | |
| 11676 | while (prev != NULL | |
| 11677 | && ((total += tail->output_offset - prev->output_offset) | |
| 6bee8834 AM |
11678 | < (ppc64_elf_section_data (prev) != NULL |
| 11679 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 7c8fe5c4 | 11680 | ? stub14_group_size : stub_group_size)) |
| 734b6cf9 AM |
11681 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 11682 | { | |
| 11683 | tail = prev; | |
| 11684 | prev = PREV_SEC (tail); | |
| 11685 | htab->stub_group[tail->id].link_sec = curr; | |
| 11686 | } | |
| 11687 | } | |
| 11688 | tail = prev; | |
| 721956f4 AM |
11689 | } |
| 11690 | } | |
| 734b6cf9 AM |
11691 | while (list-- != htab->input_list); |
| 11692 | free (htab->input_list); | |
| 721956f4 AM |
11693 | #undef PREV_SEC |
| 11694 | } | |
| 11695 | ||
| 58d180e8 AM |
11696 | static const unsigned char glink_eh_frame_cie[] = |
| 11697 | { | |
| 11698 | 0, 0, 0, 16, /* length. */ | |
| 11699 | 0, 0, 0, 0, /* id. */ | |
| 11700 | 1, /* CIE version. */ | |
| 11701 | 'z', 'R', 0, /* Augmentation string. */ | |
| 11702 | 4, /* Code alignment. */ | |
| 11703 | 0x78, /* Data alignment. */ | |
| 11704 | 65, /* RA reg. */ | |
| 11705 | 1, /* Augmentation size. */ | |
| 11706 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
| 11707 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
| 11708 | }; | |
| 11709 | ||
| d969d15f AM |
11710 | /* Stripping output sections is normally done before dynamic section |
| 11711 | symbols have been allocated. This function is called later, and | |
| 11712 | handles cases like htab->brlt which is mapped to its own output | |
| 11713 | section. */ | |
| 11714 | ||
| 11715 | static void | |
| 11716 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
| 11717 | { | |
| 11718 | if (isec->size == 0 | |
| 11719 | && isec->output_section->size == 0 | |
| 53d8967a | 11720 | && !(isec->output_section->flags & SEC_KEEP) |
| d969d15f AM |
11721 | && !bfd_section_removed_from_list (info->output_bfd, |
| 11722 | isec->output_section) | |
| 11723 | && elf_section_data (isec->output_section)->dynindx == 0) | |
| 11724 | { | |
| 11725 | isec->output_section->flags |= SEC_EXCLUDE; | |
| 11726 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
| 11727 | info->output_bfd->section_count--; | |
| 11728 | } | |
| 11729 | } | |
| 11730 | ||
| 721956f4 AM |
11731 | /* Determine and set the size of the stub section for a final link. |
| 11732 | ||
| 11733 | The basic idea here is to examine all the relocations looking for | |
| 11734 | PC-relative calls to a target that is unreachable with a "bl" | |
| 11735 | instruction. */ | |
| 11736 | ||
| b34976b6 | 11737 | bfd_boolean |
| 9df0ef5f | 11738 | ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size, |
| 794e51c0 AM |
11739 | bfd_boolean plt_static_chain, int plt_thread_safe, |
| 11740 | int plt_stub_align) | |
| 721956f4 AM |
11741 | { |
| 11742 | bfd_size_type stub_group_size; | |
| b34976b6 | 11743 | bfd_boolean stubs_always_before_branch; |
| 721956f4 AM |
11744 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 11745 | ||
| 4dfe6ac6 NC |
11746 | if (htab == NULL) |
| 11747 | return FALSE; | |
| 11748 | ||
| 9df0ef5f | 11749 | htab->plt_static_chain = plt_static_chain; |
| 794e51c0 | 11750 | htab->plt_stub_align = plt_stub_align; |
| e2458743 AM |
11751 | if (plt_thread_safe == -1 && !info->executable) |
| 11752 | plt_thread_safe = 1; | |
| b9e5796b AM |
11753 | if (!htab->opd_abi) |
| 11754 | plt_thread_safe = 0; | |
| 11755 | else if (plt_thread_safe == -1) | |
| 794e51c0 | 11756 | { |
| e2458743 | 11757 | static const char *const thread_starter[] = |
| 794e51c0 AM |
11758 | { |
| 11759 | "pthread_create", | |
| 11760 | /* libstdc++ */ | |
| 11761 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
| 11762 | /* librt */ | |
| 11763 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
| 11764 | "mq_notify", "create_timer", | |
| 11765 | /* libanl */ | |
| 11766 | "getaddrinfo_a", | |
| 11767 | /* libgomp */ | |
| 11768 | "GOMP_parallel_start", | |
| 11769 | "GOMP_parallel_loop_static_start", | |
| 11770 | "GOMP_parallel_loop_dynamic_start", | |
| 11771 | "GOMP_parallel_loop_guided_start", | |
| 11772 | "GOMP_parallel_loop_runtime_start", | |
| 68ffbac6 | 11773 | "GOMP_parallel_sections_start", |
| 794e51c0 AM |
11774 | }; |
| 11775 | unsigned i; | |
| 11776 | ||
| 11777 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
| 11778 | { | |
| 11779 | struct elf_link_hash_entry *h; | |
| 11780 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
| 11781 | FALSE, FALSE, TRUE); | |
| 11782 | plt_thread_safe = h != NULL && h->ref_regular; | |
| 11783 | if (plt_thread_safe) | |
| 11784 | break; | |
| 11785 | } | |
| 11786 | } | |
| 11787 | htab->plt_thread_safe = plt_thread_safe; | |
| 721956f4 AM |
11788 | stubs_always_before_branch = group_size < 0; |
| 11789 | if (group_size < 0) | |
| 11790 | stub_group_size = -group_size; | |
| 11791 | else | |
| 11792 | stub_group_size = group_size; | |
| 721956f4 AM |
11793 | |
| 11794 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
| 11795 | ||
| 721956f4 AM |
11796 | while (1) |
| 11797 | { | |
| 11798 | bfd *input_bfd; | |
| 11799 | unsigned int bfd_indx; | |
| 11800 | asection *stub_sec; | |
| 721956f4 AM |
11801 | |
| 11802 | htab->stub_iteration += 1; | |
| 721956f4 AM |
11803 | |
| 11804 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
| 11805 | input_bfd != NULL; | |
| 11806 | input_bfd = input_bfd->link_next, bfd_indx++) | |
| 11807 | { | |
| 11808 | Elf_Internal_Shdr *symtab_hdr; | |
| 11809 | asection *section; | |
| 6cdc0ccc | 11810 | Elf_Internal_Sym *local_syms = NULL; |
| 721956f4 | 11811 | |
| 0c8d6e5c | 11812 | if (!is_ppc64_elf (input_bfd)) |
| 67f93c31 AM |
11813 | continue; |
| 11814 | ||
| 721956f4 | 11815 | /* We'll need the symbol table in a second. */ |
| 0ffa91dd | 11816 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 721956f4 AM |
11817 | if (symtab_hdr->sh_info == 0) |
| 11818 | continue; | |
| 11819 | ||
| 721956f4 AM |
11820 | /* Walk over each section attached to the input bfd. */ |
| 11821 | for (section = input_bfd->sections; | |
| 11822 | section != NULL; | |
| 11823 | section = section->next) | |
| 11824 | { | |
| 721956f4 | 11825 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 721956f4 AM |
11826 | |
| 11827 | /* If there aren't any relocs, then there's nothing more | |
| 11828 | to do. */ | |
| 11829 | if ((section->flags & SEC_RELOC) == 0 | |
| 12c0f757 AM |
11830 | || (section->flags & SEC_ALLOC) == 0 |
| 11831 | || (section->flags & SEC_LOAD) == 0 | |
| 11832 | || (section->flags & SEC_CODE) == 0 | |
| 721956f4 AM |
11833 | || section->reloc_count == 0) |
| 11834 | continue; | |
| 11835 | ||
| 11836 | /* If this section is a link-once section that will be | |
| 11837 | discarded, then don't create any stubs. */ | |
| 11838 | if (section->output_section == NULL | |
| 927be08e | 11839 | || section->output_section->owner != info->output_bfd) |
| 721956f4 AM |
11840 | continue; |
| 11841 | ||
| 1e2f5b6e AM |
11842 | /* Get the relocs. */ |
| 11843 | internal_relocs | |
| 4ce794b7 | 11844 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
| 45d6a902 | 11845 | info->keep_memory); |
| 721956f4 | 11846 | if (internal_relocs == NULL) |
| 1e2f5b6e | 11847 | goto error_ret_free_local; |
| 721956f4 AM |
11848 | |
| 11849 | /* Now examine each relocation. */ | |
| 11850 | irela = internal_relocs; | |
| 11851 | irelaend = irela + section->reloc_count; | |
| 11852 | for (; irela < irelaend; irela++) | |
| 11853 | { | |
| 4ce794b7 AM |
11854 | enum elf_ppc64_reloc_type r_type; |
| 11855 | unsigned int r_indx; | |
| 721956f4 AM |
11856 | enum ppc_stub_type stub_type; |
| 11857 | struct ppc_stub_hash_entry *stub_entry; | |
| 8387904d | 11858 | asection *sym_sec, *code_sec; |
| e054468f | 11859 | bfd_vma sym_value, code_value; |
| 721956f4 | 11860 | bfd_vma destination; |
| 6911b7dc | 11861 | unsigned long local_off; |
| 8843416a | 11862 | bfd_boolean ok_dest; |
| 721956f4 | 11863 | struct ppc_link_hash_entry *hash; |
| 8387904d | 11864 | struct ppc_link_hash_entry *fdh; |
| 411e1bfb AM |
11865 | struct elf_link_hash_entry *h; |
| 11866 | Elf_Internal_Sym *sym; | |
| 721956f4 AM |
11867 | char *stub_name; |
| 11868 | const asection *id_sec; | |
| 74f0fb50 | 11869 | struct _opd_sec_data *opd; |
| e054468f | 11870 | struct plt_entry *plt_ent; |
| 721956f4 AM |
11871 | |
| 11872 | r_type = ELF64_R_TYPE (irela->r_info); | |
| 11873 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 11874 | ||
| 4ce794b7 | 11875 | if (r_type >= R_PPC64_max) |
| 721956f4 AM |
11876 | { |
| 11877 | bfd_set_error (bfd_error_bad_value); | |
| 6cdc0ccc | 11878 | goto error_ret_free_internal; |
| 721956f4 AM |
11879 | } |
| 11880 | ||
| 11881 | /* Only look for stubs on branch instructions. */ | |
| 4ce794b7 AM |
11882 | if (r_type != R_PPC64_REL24 |
| 11883 | && r_type != R_PPC64_REL14 | |
| 11884 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 11885 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 721956f4 AM |
11886 | continue; |
| 11887 | ||
| 11888 | /* Now determine the call target, its name, value, | |
| 11889 | section. */ | |
| 411e1bfb AM |
11890 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 11891 | r_indx, input_bfd)) | |
| 11892 | goto error_ret_free_internal; | |
| 11893 | hash = (struct ppc_link_hash_entry *) h; | |
| 11894 | ||
| 8843416a | 11895 | ok_dest = FALSE; |
| 8387904d | 11896 | fdh = NULL; |
| 7fe2b9a6 | 11897 | sym_value = 0; |
| 411e1bfb | 11898 | if (hash == NULL) |
| 721956f4 | 11899 | { |
| 411e1bfb | 11900 | sym_value = sym->st_value; |
| 8843416a | 11901 | ok_dest = TRUE; |
| 721956f4 | 11902 | } |
| 7fe2b9a6 AM |
11903 | else if (hash->elf.root.type == bfd_link_hash_defined |
| 11904 | || hash->elf.root.type == bfd_link_hash_defweak) | |
| 11905 | { | |
| 11906 | sym_value = hash->elf.root.u.def.value; | |
| 11907 | if (sym_sec->output_section != NULL) | |
| 11908 | ok_dest = TRUE; | |
| 11909 | } | |
| 11910 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
| 11911 | || hash->elf.root.type == bfd_link_hash_undefined) | |
| 721956f4 | 11912 | { |
| 99877b66 | 11913 | /* Recognise an old ABI func code entry sym, and |
| 7fe2b9a6 AM |
11914 | use the func descriptor sym instead if it is |
| 11915 | defined. */ | |
| ceb1f1ef | 11916 | if (hash->elf.root.root.string[0] == '.' |
| b31867b6 | 11917 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
| 8387904d | 11918 | { |
| 8387904d AM |
11919 | if (fdh->elf.root.type == bfd_link_hash_defined |
| 11920 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 11921 | { | |
| 11922 | sym_sec = fdh->elf.root.u.def.section; | |
| 11923 | sym_value = fdh->elf.root.u.def.value; | |
| 11924 | if (sym_sec->output_section != NULL) | |
| 11925 | ok_dest = TRUE; | |
| 11926 | } | |
| 99877b66 AM |
11927 | else |
| 11928 | fdh = NULL; | |
| 8387904d | 11929 | } |
| 7fe2b9a6 AM |
11930 | } |
| 11931 | else | |
| 11932 | { | |
| 11933 | bfd_set_error (bfd_error_bad_value); | |
| 11934 | goto error_ret_free_internal; | |
| 721956f4 AM |
11935 | } |
| 11936 | ||
| 8843416a | 11937 | destination = 0; |
| 6911b7dc | 11938 | local_off = 0; |
| 8843416a AM |
11939 | if (ok_dest) |
| 11940 | { | |
| 11941 | sym_value += irela->r_addend; | |
| 11942 | destination = (sym_value | |
| 11943 | + sym_sec->output_offset | |
| 11944 | + sym_sec->output_section->vma); | |
| 6911b7dc AM |
11945 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
| 11946 | ? hash->elf.other | |
| 11947 | : sym->st_other); | |
| 8843416a AM |
11948 | } |
| 11949 | ||
| 8387904d | 11950 | code_sec = sym_sec; |
| e054468f | 11951 | code_value = sym_value; |
| 74f0fb50 AM |
11952 | opd = get_opd_info (sym_sec); |
| 11953 | if (opd != NULL) | |
| 8387904d AM |
11954 | { |
| 11955 | bfd_vma dest; | |
| 11956 | ||
| 74f0fb50 | 11957 | if (hash == NULL && opd->adjust != NULL) |
| 8387904d | 11958 | { |
| 74f0fb50 | 11959 | long adjust = opd->adjust[sym_value / 8]; |
| 8387904d AM |
11960 | if (adjust == -1) |
| 11961 | continue; | |
| e054468f | 11962 | code_value += adjust; |
| 8387904d AM |
11963 | sym_value += adjust; |
| 11964 | } | |
| 11965 | dest = opd_entry_value (sym_sec, sym_value, | |
| aef36ac1 | 11966 | &code_sec, &code_value, FALSE); |
| 8387904d AM |
11967 | if (dest != (bfd_vma) -1) |
| 11968 | { | |
| 11969 | destination = dest; | |
| 11970 | if (fdh != NULL) | |
| 11971 | { | |
| 11972 | /* Fixup old ABI sym to point at code | |
| 11973 | entry. */ | |
| 99877b66 | 11974 | hash->elf.root.type = bfd_link_hash_defweak; |
| 8387904d | 11975 | hash->elf.root.u.def.section = code_sec; |
| e054468f | 11976 | hash->elf.root.u.def.value = code_value; |
| 8387904d AM |
11977 | } |
| 11978 | } | |
| 11979 | } | |
| 11980 | ||
| 721956f4 | 11981 | /* Determine what (if any) linker stub is needed. */ |
| e054468f | 11982 | plt_ent = NULL; |
| 721956f4 | 11983 | stub_type = ppc_type_of_stub (section, irela, &hash, |
| 6911b7dc AM |
11984 | &plt_ent, destination, |
| 11985 | local_off); | |
| ad8e1ba5 AM |
11986 | |
| 11987 | if (stub_type != ppc_stub_plt_call) | |
| 11988 | { | |
| 11989 | /* Check whether we need a TOC adjusting stub. | |
| 11990 | Since the linker pastes together pieces from | |
| 11991 | different object files when creating the | |
| 11992 | _init and _fini functions, it may be that a | |
| 11993 | call to what looks like a local sym is in | |
| 11994 | fact a call needing a TOC adjustment. */ | |
| 8387904d AM |
11995 | if (code_sec != NULL |
| 11996 | && code_sec->output_section != NULL | |
| 11997 | && (htab->stub_group[code_sec->id].toc_off | |
| 9b5ecbd0 | 11998 | != htab->stub_group[section->id].toc_off) |
| 4c52953f AM |
11999 | && (code_sec->has_toc_reloc |
| 12000 | || code_sec->makes_toc_func_call)) | |
| ad8e1ba5 AM |
12001 | stub_type = ppc_stub_long_branch_r2off; |
| 12002 | } | |
| 12003 | ||
| 721956f4 AM |
12004 | if (stub_type == ppc_stub_none) |
| 12005 | continue; | |
| 12006 | ||
| 411e1bfb AM |
12007 | /* __tls_get_addr calls might be eliminated. */ |
| 12008 | if (stub_type != ppc_stub_plt_call | |
| 12009 | && hash != NULL | |
| 8387904d AM |
12010 | && (hash == htab->tls_get_addr |
| 12011 | || hash == htab->tls_get_addr_fd) | |
| 411e1bfb AM |
12012 | && section->has_tls_reloc |
| 12013 | && irela != internal_relocs) | |
| 12014 | { | |
| 12015 | /* Get tls info. */ | |
| f961d9dd | 12016 | unsigned char *tls_mask; |
| 411e1bfb | 12017 | |
| 3a71aa26 | 12018 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
| 411e1bfb AM |
12019 | irela - 1, input_bfd)) |
| 12020 | goto error_ret_free_internal; | |
| e7b938ca | 12021 | if (*tls_mask != 0) |
| 411e1bfb AM |
12022 | continue; |
| 12023 | } | |
| 12024 | ||
| 3b421ab3 AM |
12025 | if (stub_type == ppc_stub_plt_call |
| 12026 | && irela + 1 < irelaend | |
| 12027 | && irela[1].r_offset == irela->r_offset + 4 | |
| 794e51c0 AM |
12028 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
| 12029 | { | |
| 12030 | if (!tocsave_find (htab, INSERT, | |
| 12031 | &local_syms, irela + 1, input_bfd)) | |
| 12032 | goto error_ret_free_internal; | |
| 12033 | } | |
| 12034 | else if (stub_type == ppc_stub_plt_call) | |
| 12035 | stub_type = ppc_stub_plt_call_r2save; | |
| 3b421ab3 | 12036 | |
| 721956f4 AM |
12037 | /* Support for grouping stub sections. */ |
| 12038 | id_sec = htab->stub_group[section->id].link_sec; | |
| 12039 | ||
| 12040 | /* Get the name of this stub. */ | |
| 12041 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
| 12042 | if (!stub_name) | |
| 12043 | goto error_ret_free_internal; | |
| 12044 | ||
| 12045 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 12046 | stub_name, FALSE, FALSE); |
| 721956f4 AM |
12047 | if (stub_entry != NULL) |
| 12048 | { | |
| 12049 | /* The proper stub has already been created. */ | |
| 12050 | free (stub_name); | |
| 794e51c0 AM |
12051 | if (stub_type == ppc_stub_plt_call_r2save) |
| 12052 | stub_entry->stub_type = stub_type; | |
| 721956f4 AM |
12053 | continue; |
| 12054 | } | |
| 12055 | ||
| 25f53a85 | 12056 | stub_entry = ppc_add_stub (stub_name, section, info); |
| 721956f4 AM |
12057 | if (stub_entry == NULL) |
| 12058 | { | |
| 12059 | free (stub_name); | |
| 6cdc0ccc AM |
12060 | error_ret_free_internal: |
| 12061 | if (elf_section_data (section)->relocs == NULL) | |
| 12062 | free (internal_relocs); | |
| 12063 | error_ret_free_local: | |
| 12064 | if (local_syms != NULL | |
| 12065 | && (symtab_hdr->contents | |
| 12066 | != (unsigned char *) local_syms)) | |
| 12067 | free (local_syms); | |
| b34976b6 | 12068 | return FALSE; |
| 721956f4 AM |
12069 | } |
| 12070 | ||
| ad8e1ba5 | 12071 | stub_entry->stub_type = stub_type; |
| 794e51c0 AM |
12072 | if (stub_type != ppc_stub_plt_call |
| 12073 | && stub_type != ppc_stub_plt_call_r2save) | |
| e054468f AM |
12074 | { |
| 12075 | stub_entry->target_value = code_value; | |
| 12076 | stub_entry->target_section = code_sec; | |
| 12077 | } | |
| 12078 | else | |
| 12079 | { | |
| 12080 | stub_entry->target_value = sym_value; | |
| 12081 | stub_entry->target_section = sym_sec; | |
| 12082 | } | |
| 721956f4 | 12083 | stub_entry->h = hash; |
| e054468f | 12084 | stub_entry->plt_ent = plt_ent; |
| 6911b7dc | 12085 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
| ee75fd95 AM |
12086 | |
| 12087 | if (stub_entry->h != NULL) | |
| 12088 | htab->stub_globals += 1; | |
| 721956f4 AM |
12089 | } |
| 12090 | ||
| 12091 | /* We're done with the internal relocs, free them. */ | |
| 6cdc0ccc | 12092 | if (elf_section_data (section)->relocs != internal_relocs) |
| 1e2f5b6e | 12093 | free (internal_relocs); |
| 721956f4 | 12094 | } |
| 6cdc0ccc AM |
12095 | |
| 12096 | if (local_syms != NULL | |
| 12097 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 12098 | { | |
| 12099 | if (!info->keep_memory) | |
| 12100 | free (local_syms); | |
| 12101 | else | |
| 12102 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 12103 | } | |
| 721956f4 AM |
12104 | } |
| 12105 | ||
| 5c3dead3 | 12106 | /* We may have added some stubs. Find out the new size of the |
| 721956f4 AM |
12107 | stub sections. */ |
| 12108 | for (stub_sec = htab->stub_bfd->sections; | |
| 12109 | stub_sec != NULL; | |
| 12110 | stub_sec = stub_sec->next) | |
| e717da7e | 12111 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| ee75fd95 | 12112 | { |
| 5c3dead3 | 12113 | stub_sec->rawsize = stub_sec->size; |
| ee75fd95 AM |
12114 | stub_sec->size = 0; |
| 12115 | stub_sec->reloc_count = 0; | |
| 84f5d08e | 12116 | stub_sec->flags &= ~SEC_RELOC; |
| ee75fd95 | 12117 | } |
| eea6121a AM |
12118 | |
| 12119 | htab->brlt->size = 0; | |
| 84f5d08e AM |
12120 | htab->brlt->reloc_count = 0; |
| 12121 | htab->brlt->flags &= ~SEC_RELOC; | |
| ee75fd95 | 12122 | if (htab->relbrlt != NULL) |
| eea6121a | 12123 | htab->relbrlt->size = 0; |
| 721956f4 | 12124 | |
| 63bc6f6c | 12125 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
| 721956f4 | 12126 | |
| 176a0d42 AM |
12127 | if (info->emitrelocations |
| 12128 | && htab->glink != NULL && htab->glink->size != 0) | |
| 12129 | { | |
| 12130 | htab->glink->reloc_count = 1; | |
| 12131 | htab->glink->flags |= SEC_RELOC; | |
| 12132 | } | |
| 12133 | ||
| 58d180e8 AM |
12134 | if (htab->glink_eh_frame != NULL |
| 12135 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
| 9a2a56cc | 12136 | && htab->glink_eh_frame->output_section->size != 0) |
| 58d180e8 | 12137 | { |
| 4bbe044a | 12138 | size_t size = 0, align; |
| 58d180e8 AM |
12139 | |
| 12140 | for (stub_sec = htab->stub_bfd->sections; | |
| 12141 | stub_sec != NULL; | |
| 12142 | stub_sec = stub_sec->next) | |
| 12143 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12144 | size += 20; | |
| 12145 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 12146 | size += 24; | |
| 12147 | if (size != 0) | |
| 12148 | size += sizeof (glink_eh_frame_cie); | |
| 4bbe044a AM |
12149 | align = 1; |
| 12150 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
| 12151 | align -= 1; | |
| 12152 | size = (size + align) & ~align; | |
| 58d180e8 AM |
12153 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
| 12154 | htab->glink_eh_frame->size = size; | |
| 12155 | } | |
| 12156 | ||
| 794e51c0 AM |
12157 | if (htab->plt_stub_align != 0) |
| 12158 | for (stub_sec = htab->stub_bfd->sections; | |
| 12159 | stub_sec != NULL; | |
| 12160 | stub_sec = stub_sec->next) | |
| 12161 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12162 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
| 12163 | & (-1 << htab->plt_stub_align)); | |
| 12164 | ||
| 5c3dead3 AM |
12165 | for (stub_sec = htab->stub_bfd->sections; |
| 12166 | stub_sec != NULL; | |
| 12167 | stub_sec = stub_sec->next) | |
| 12168 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
| 12169 | && stub_sec->rawsize != stub_sec->size) | |
| 12170 | break; | |
| 12171 | ||
| 12172 | /* Exit from this loop when no stubs have been added, and no stubs | |
| 12173 | have changed size. */ | |
| 58d180e8 AM |
12174 | if (stub_sec == NULL |
| 12175 | && (htab->glink_eh_frame == NULL | |
| 12176 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
| 5c3dead3 AM |
12177 | break; |
| 12178 | ||
| 721956f4 AM |
12179 | /* Ask the linker to do its stuff. */ |
| 12180 | (*htab->layout_sections_again) (); | |
| 12181 | } | |
| 12182 | ||
| d969d15f AM |
12183 | maybe_strip_output (info, htab->brlt); |
| 12184 | if (htab->glink_eh_frame != NULL) | |
| 12185 | maybe_strip_output (info, htab->glink_eh_frame); | |
| 721956f4 | 12186 | |
| b34976b6 | 12187 | return TRUE; |
| 721956f4 AM |
12188 | } |
| 12189 | ||
| 12190 | /* Called after we have determined section placement. If sections | |
| 805fc799 | 12191 | move, we'll be called again. Provide a value for TOCstart. */ |
| 721956f4 | 12192 | |
| 805fc799 | 12193 | bfd_vma |
| 1c865ab2 | 12194 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
| 721956f4 | 12195 | { |
| 805fc799 AM |
12196 | asection *s; |
| 12197 | bfd_vma TOCstart; | |
| 721956f4 | 12198 | |
| 805fc799 AM |
12199 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
| 12200 | order. The TOC starts where the first of these sections starts. */ | |
| 12201 | s = bfd_get_section_by_name (obfd, ".got"); | |
| e054468f | 12202 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12203 | s = bfd_get_section_by_name (obfd, ".toc"); |
| e054468f | 12204 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12205 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
| e054468f | 12206 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12207 | s = bfd_get_section_by_name (obfd, ".plt"); |
| e054468f | 12208 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 AM |
12209 | { |
| 12210 | /* This may happen for | |
| 12211 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
| 12212 | .toc directive | |
| 12213 | o bad linker script | |
| 12214 | o --gc-sections and empty TOC sections | |
| 12215 | ||
| 12216 | FIXME: Warn user? */ | |
| 12217 | ||
| 12218 | /* Look for a likely section. We probably won't even be | |
| 12219 | using TOCstart. */ | |
| 12220 | for (s = obfd->sections; s != NULL; s = s->next) | |
| e054468f AM |
12221 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
| 12222 | | SEC_EXCLUDE)) | |
| 805fc799 AM |
12223 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12224 | break; | |
| 721956f4 | 12225 | if (s == NULL) |
| 805fc799 | 12226 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12227 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
| 805fc799 AM |
12228 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12229 | break; | |
| 721956f4 | 12230 | if (s == NULL) |
| 805fc799 | 12231 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f AM |
12232 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
| 12233 | == SEC_ALLOC) | |
| 805fc799 | 12234 | break; |
| 721956f4 | 12235 | if (s == NULL) |
| 805fc799 | 12236 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12237 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
| 805fc799 AM |
12238 | break; |
| 12239 | } | |
| 721956f4 | 12240 | |
| 805fc799 AM |
12241 | TOCstart = 0; |
| 12242 | if (s != NULL) | |
| 12243 | TOCstart = s->output_section->vma + s->output_offset; | |
| 721956f4 | 12244 | |
| 1c865ab2 AM |
12245 | _bfd_set_gp_value (obfd, TOCstart); |
| 12246 | ||
| 12247 | if (info != NULL && s != NULL && is_ppc64_elf (obfd)) | |
| 12248 | { | |
| 12249 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 12250 | ||
| 12251 | if (htab != NULL | |
| 12252 | && htab->elf.hgot != NULL) | |
| 12253 | { | |
| 5295321c | 12254 | htab->elf.hgot->type = STT_OBJECT; |
| 1c865ab2 AM |
12255 | htab->elf.hgot->root.type = bfd_link_hash_defined; |
| 12256 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; | |
| 12257 | htab->elf.hgot->root.u.def.section = s; | |
| 12258 | } | |
| 12259 | } | |
| 805fc799 | 12260 | return TOCstart; |
| 721956f4 AM |
12261 | } |
| 12262 | ||
| 12263 | /* Build all the stubs associated with the current output file. | |
| 12264 | The stubs are kept in a hash table attached to the main linker | |
| 12265 | hash table. This function is called via gldelf64ppc_finish. */ | |
| 12266 | ||
| b34976b6 | 12267 | bfd_boolean |
| 4ce794b7 AM |
12268 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
| 12269 | struct bfd_link_info *info, | |
| 12270 | char **stats) | |
| 5d1634d7 AM |
12271 | { |
| 12272 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 721956f4 | 12273 | asection *stub_sec; |
| 5d1634d7 | 12274 | bfd_byte *p; |
| e717da7e | 12275 | int stub_sec_count = 0; |
| 5d1634d7 | 12276 | |
| 4dfe6ac6 NC |
12277 | if (htab == NULL) |
| 12278 | return FALSE; | |
| 12279 | ||
| ad8e1ba5 | 12280 | htab->emit_stub_syms = emit_stub_syms; |
| eea6121a AM |
12281 | |
| 12282 | /* Allocate memory to hold the linker stubs. */ | |
| 721956f4 AM |
12283 | for (stub_sec = htab->stub_bfd->sections; |
| 12284 | stub_sec != NULL; | |
| 12285 | stub_sec = stub_sec->next) | |
| eea6121a AM |
12286 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
| 12287 | && stub_sec->size != 0) | |
| e717da7e | 12288 | { |
| eea6121a AM |
12289 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
| 12290 | if (stub_sec->contents == NULL) | |
| 12291 | return FALSE; | |
| 12292 | /* We want to check that built size is the same as calculated | |
| 12293 | size. rawsize is a convenient location to use. */ | |
| 12294 | stub_sec->rawsize = stub_sec->size; | |
| 12295 | stub_sec->size = 0; | |
| e717da7e | 12296 | } |
| 5d1634d7 | 12297 | |
| 23eb7e01 | 12298 | if (htab->glink != NULL && htab->glink->size != 0) |
| 5d1634d7 | 12299 | { |
| 9f951329 | 12300 | unsigned int indx; |
| ad8e1ba5 | 12301 | bfd_vma plt0; |
| 9f951329 | 12302 | |
| 721956f4 | 12303 | /* Build the .glink plt call stub. */ |
| 97b639ba AM |
12304 | if (htab->emit_stub_syms) |
| 12305 | { | |
| 12306 | struct elf_link_hash_entry *h; | |
| 468392fb AM |
12307 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
| 12308 | TRUE, FALSE, FALSE); | |
| 97b639ba AM |
12309 | if (h == NULL) |
| 12310 | return FALSE; | |
| 12311 | if (h->root.type == bfd_link_hash_new) | |
| 12312 | { | |
| 12313 | h->root.type = bfd_link_hash_defined; | |
| 12314 | h->root.u.def.section = htab->glink; | |
| ee4bf8d2 | 12315 | h->root.u.def.value = 8; |
| f5385ebf AM |
12316 | h->ref_regular = 1; |
| 12317 | h->def_regular = 1; | |
| 12318 | h->ref_regular_nonweak = 1; | |
| 12319 | h->forced_local = 1; | |
| 12320 | h->non_elf = 0; | |
| 97b639ba AM |
12321 | } |
| 12322 | } | |
| 176a0d42 AM |
12323 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
| 12324 | if (info->emitrelocations) | |
| 12325 | { | |
| 12326 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
| 12327 | if (r == NULL) | |
| 12328 | return FALSE; | |
| 12329 | r->r_offset = (htab->glink->output_offset | |
| 12330 | + htab->glink->output_section->vma); | |
| 12331 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
| 12332 | r->r_addend = plt0; | |
| 12333 | } | |
| 4ce794b7 | 12334 | p = htab->glink->contents; |
| 176a0d42 | 12335 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
| ee4bf8d2 AM |
12336 | bfd_put_64 (htab->glink->owner, plt0, p); |
| 12337 | p += 8; | |
| b9e5796b AM |
12338 | if (htab->opd_abi) |
| 12339 | { | |
| 12340 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
| 12341 | p += 4; | |
| 12342 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
| 12343 | p += 4; | |
| 12344 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
| 12345 | p += 4; | |
| 12346 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
| 12347 | p += 4; | |
| 12348 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
| 12349 | p += 4; | |
| 12350 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
| 12351 | p += 4; | |
| 12352 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
| 12353 | p += 4; | |
| 12354 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
| 12355 | p += 4; | |
| 12356 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
| 12357 | p += 4; | |
| 12358 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
| 12359 | p += 4; | |
| 12360 | } | |
| 12361 | else | |
| 12362 | { | |
| 12363 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
| 12364 | p += 4; | |
| 12365 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
| 12366 | p += 4; | |
| 12367 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
| 12368 | p += 4; | |
| 12369 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
| 12370 | p += 4; | |
| 12371 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
| 12372 | p += 4; | |
| 12373 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
| 12374 | p += 4; | |
| 12375 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
| 12376 | p += 4; | |
| 12377 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
| 12378 | p += 4; | |
| 12379 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
| 12380 | p += 4; | |
| 12381 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
| 12382 | p += 4; | |
| 12383 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
| 12384 | p += 4; | |
| 12385 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
| 12386 | p += 4; | |
| 12387 | } | |
| 4ce794b7 | 12388 | bfd_put_32 (htab->glink->owner, BCTR, p); |
| ad8e1ba5 | 12389 | p += 4; |
| ee4bf8d2 AM |
12390 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
| 12391 | { | |
| 12392 | bfd_put_32 (htab->glink->owner, NOP, p); | |
| 12393 | p += 4; | |
| 12394 | } | |
| ad8e1ba5 | 12395 | |
| 9f951329 AM |
12396 | /* Build the .glink lazy link call stubs. */ |
| 12397 | indx = 0; | |
| eea6121a | 12398 | while (p < htab->glink->contents + htab->glink->size) |
| 9f951329 | 12399 | { |
| b9e5796b | 12400 | if (htab->opd_abi) |
| 9f951329 | 12401 | { |
| b9e5796b AM |
12402 | if (indx < 0x8000) |
| 12403 | { | |
| 12404 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
| 12405 | p += 4; | |
| 12406 | } | |
| 12407 | else | |
| 12408 | { | |
| 12409 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
| 12410 | p += 4; | |
| 12411 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
| 12412 | p); | |
| 12413 | p += 4; | |
| 12414 | } | |
| 9f951329 | 12415 | } |
| 4ce794b7 | 12416 | bfd_put_32 (htab->glink->owner, |
| ee4bf8d2 | 12417 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
| a16d5acb | 12418 | indx++; |
| 9f951329 AM |
12419 | p += 4; |
| 12420 | } | |
| eea6121a | 12421 | htab->glink->rawsize = p - htab->glink->contents; |
| 5d1634d7 | 12422 | } |
| 5d1634d7 | 12423 | |
| eea6121a | 12424 | if (htab->brlt->size != 0) |
| 721956f4 | 12425 | { |
| 4ce794b7 | 12426 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
| eea6121a | 12427 | htab->brlt->size); |
| 4ce794b7 | 12428 | if (htab->brlt->contents == NULL) |
| b34976b6 | 12429 | return FALSE; |
| 721956f4 | 12430 | } |
| ee75fd95 | 12431 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
| 63bc6f6c AM |
12432 | { |
| 12433 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
| eea6121a | 12434 | htab->relbrlt->size); |
| 63bc6f6c AM |
12435 | if (htab->relbrlt->contents == NULL) |
| 12436 | return FALSE; | |
| 12437 | } | |
| 5d1634d7 | 12438 | |
| 58d180e8 AM |
12439 | if (htab->glink_eh_frame != NULL |
| 12440 | && htab->glink_eh_frame->size != 0) | |
| 12441 | { | |
| 12442 | bfd_vma val; | |
| 4bbe044a AM |
12443 | bfd_byte *last_fde; |
| 12444 | size_t last_fde_len, size, align, pad; | |
| 58d180e8 AM |
12445 | |
| 12446 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
| 12447 | if (p == NULL) | |
| 12448 | return FALSE; | |
| 12449 | htab->glink_eh_frame->contents = p; | |
| 4bbe044a | 12450 | last_fde = p; |
| 58d180e8 AM |
12451 | |
| 12452 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
| 12453 | ||
| 12454 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
| 12455 | /* CIE length (rewrite in case little-endian). */ | |
| 4bbe044a AM |
12456 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; |
| 12457 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
| 58d180e8 AM |
12458 | p += sizeof (glink_eh_frame_cie); |
| 12459 | ||
| 12460 | for (stub_sec = htab->stub_bfd->sections; | |
| 12461 | stub_sec != NULL; | |
| 12462 | stub_sec = stub_sec->next) | |
| 12463 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12464 | { | |
| 4bbe044a AM |
12465 | last_fde = p; |
| 12466 | last_fde_len = 16; | |
| 58d180e8 AM |
12467 | /* FDE length. */ |
| 12468 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
| 12469 | p += 4; | |
| 12470 | /* CIE pointer. */ | |
| 12471 | val = p - htab->glink_eh_frame->contents; | |
| 12472 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12473 | p += 4; | |
| 12474 | /* Offset to stub section. */ | |
| 12475 | val = (stub_sec->output_section->vma | |
| 12476 | + stub_sec->output_offset); | |
| 12477 | val -= (htab->glink_eh_frame->output_section->vma | |
| 12478 | + htab->glink_eh_frame->output_offset); | |
| 12479 | val -= p - htab->glink_eh_frame->contents; | |
| 12480 | if (val + 0x80000000 > 0xffffffff) | |
| 12481 | { | |
| 12482 | info->callbacks->einfo | |
| 8de848d8 | 12483 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
| 58d180e8 AM |
12484 | stub_sec->name); |
| 12485 | return FALSE; | |
| 12486 | } | |
| 12487 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12488 | p += 4; | |
| 12489 | /* stub section size. */ | |
| 12490 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
| 12491 | p += 4; | |
| 12492 | /* Augmentation. */ | |
| 12493 | p += 1; | |
| 12494 | /* Pad. */ | |
| 12495 | p += 3; | |
| 12496 | } | |
| 12497 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 12498 | { | |
| 4bbe044a AM |
12499 | last_fde = p; |
| 12500 | last_fde_len = 20; | |
| 58d180e8 AM |
12501 | /* FDE length. */ |
| 12502 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
| 12503 | p += 4; | |
| 12504 | /* CIE pointer. */ | |
| 12505 | val = p - htab->glink_eh_frame->contents; | |
| 12506 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12507 | p += 4; | |
| 12508 | /* Offset to .glink. */ | |
| 12509 | val = (htab->glink->output_section->vma | |
| 12510 | + htab->glink->output_offset | |
| 12511 | + 8); | |
| 12512 | val -= (htab->glink_eh_frame->output_section->vma | |
| 12513 | + htab->glink_eh_frame->output_offset); | |
| 12514 | val -= p - htab->glink_eh_frame->contents; | |
| 12515 | if (val + 0x80000000 > 0xffffffff) | |
| 12516 | { | |
| 12517 | info->callbacks->einfo | |
| 8de848d8 | 12518 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
| 58d180e8 AM |
12519 | htab->glink->name); |
| 12520 | return FALSE; | |
| 12521 | } | |
| 12522 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12523 | p += 4; | |
| 12524 | /* .glink size. */ | |
| 12525 | bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p); | |
| 12526 | p += 4; | |
| 12527 | /* Augmentation. */ | |
| 12528 | p += 1; | |
| 12529 | ||
| 12530 | *p++ = DW_CFA_advance_loc + 1; | |
| 12531 | *p++ = DW_CFA_register; | |
| 12532 | *p++ = 65; | |
| 12533 | *p++ = 12; | |
| 12534 | *p++ = DW_CFA_advance_loc + 4; | |
| 12535 | *p++ = DW_CFA_restore_extended; | |
| 12536 | *p++ = 65; | |
| 12537 | } | |
| 4bbe044a AM |
12538 | /* Subsume any padding into the last FDE if user .eh_frame |
| 12539 | sections are aligned more than glink_eh_frame. Otherwise any | |
| 12540 | zero padding will be seen as a terminator. */ | |
| 12541 | size = p - htab->glink_eh_frame->contents; | |
| 12542 | align = 1; | |
| 12543 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
| 12544 | align -= 1; | |
| 12545 | pad = ((size + align) & ~align) - size; | |
| 12546 | htab->glink_eh_frame->size = size + pad; | |
| 12547 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
| 58d180e8 AM |
12548 | } |
| 12549 | ||
| 721956f4 AM |
12550 | /* Build the stubs as directed by the stub hash table. */ |
| 12551 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
| 5d1634d7 | 12552 | |
| aa8a7074 AM |
12553 | if (htab->relbrlt != NULL) |
| 12554 | htab->relbrlt->reloc_count = 0; | |
| 12555 | ||
| 794e51c0 AM |
12556 | if (htab->plt_stub_align != 0) |
| 12557 | for (stub_sec = htab->stub_bfd->sections; | |
| 12558 | stub_sec != NULL; | |
| 12559 | stub_sec = stub_sec->next) | |
| 12560 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12561 | stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1) | |
| 12562 | & (-1 << htab->plt_stub_align)); | |
| 12563 | ||
| 721956f4 AM |
12564 | for (stub_sec = htab->stub_bfd->sections; |
| 12565 | stub_sec != NULL; | |
| 12566 | stub_sec = stub_sec->next) | |
| e717da7e AM |
12567 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| 12568 | { | |
| 12569 | stub_sec_count += 1; | |
| eea6121a | 12570 | if (stub_sec->rawsize != stub_sec->size) |
| e717da7e AM |
12571 | break; |
| 12572 | } | |
| 5d1634d7 | 12573 | |
| 721956f4 | 12574 | if (stub_sec != NULL |
| 58d180e8 AM |
12575 | || htab->glink->rawsize != htab->glink->size |
| 12576 | || (htab->glink_eh_frame != NULL | |
| 12577 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
| 5d1634d7 | 12578 | { |
| b34976b6 | 12579 | htab->stub_error = TRUE; |
| 8de848d8 | 12580 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
| 5d1634d7 | 12581 | } |
| 721956f4 | 12582 | |
| d2a300cf AM |
12583 | if (htab->stub_error) |
| 12584 | return FALSE; | |
| 12585 | ||
| 12586 | if (stats != NULL) | |
| 12587 | { | |
| 12588 | *stats = bfd_malloc (500); | |
| 12589 | if (*stats == NULL) | |
| 12590 | return FALSE; | |
| 12591 | ||
| ee75fd95 | 12592 | sprintf (*stats, _("linker stubs in %u group%s\n" |
| d2a300cf AM |
12593 | " branch %lu\n" |
| 12594 | " toc adjust %lu\n" | |
| 12595 | " long branch %lu\n" | |
| 12596 | " long toc adj %lu\n" | |
| 794e51c0 AM |
12597 | " plt call %lu\n" |
| 12598 | " plt call toc %lu"), | |
| e717da7e | 12599 | stub_sec_count, |
| ee75fd95 | 12600 | stub_sec_count == 1 ? "" : "s", |
| 4ce794b7 AM |
12601 | htab->stub_count[ppc_stub_long_branch - 1], |
| 12602 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
| 12603 | htab->stub_count[ppc_stub_plt_branch - 1], | |
| 12604 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
| 794e51c0 AM |
12605 | htab->stub_count[ppc_stub_plt_call - 1], |
| 12606 | htab->stub_count[ppc_stub_plt_call_r2save - 1]); | |
| d2a300cf AM |
12607 | } |
| 12608 | return TRUE; | |
| 5bd4f169 AM |
12609 | } |
| 12610 | ||
| 99877b66 AM |
12611 | /* This function undoes the changes made by add_symbol_adjust. */ |
| 12612 | ||
| 12613 | static bfd_boolean | |
| 12614 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 12615 | { | |
| 12616 | struct ppc_link_hash_entry *eh; | |
| 12617 | ||
| 12618 | if (h->root.type == bfd_link_hash_indirect) | |
| 12619 | return TRUE; | |
| 12620 | ||
| 99877b66 AM |
12621 | eh = (struct ppc_link_hash_entry *) h; |
| 12622 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
| 12623 | return TRUE; | |
| 12624 | ||
| 12625 | eh->elf.root.type = bfd_link_hash_undefined; | |
| 12626 | return TRUE; | |
| 12627 | } | |
| 12628 | ||
| 12629 | void | |
| 12630 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
| 12631 | { | |
| 12632 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
12633 | |
| 12634 | if (htab != NULL) | |
| 12635 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
| 99877b66 AM |
12636 | } |
| 12637 | ||
| 60124e18 AM |
12638 | /* What to do when ld finds relocations against symbols defined in |
| 12639 | discarded sections. */ | |
| 12640 | ||
| 12641 | static unsigned int | |
| 12642 | ppc64_elf_action_discarded (asection *sec) | |
| 12643 | { | |
| 12644 | if (strcmp (".opd", sec->name) == 0) | |
| 12645 | return 0; | |
| 12646 | ||
| 12647 | if (strcmp (".toc", sec->name) == 0) | |
| 12648 | return 0; | |
| 12649 | ||
| bce50a28 JJ |
12650 | if (strcmp (".toc1", sec->name) == 0) |
| 12651 | return 0; | |
| 12652 | ||
| 60124e18 AM |
12653 | return _bfd_elf_default_action_discarded (sec); |
| 12654 | } | |
| 12655 | ||
| 5bd4f169 AM |
12656 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 12657 | to handle the relocations for a section. | |
| 12658 | ||
| 12659 | The relocs are always passed as Rela structures; if the section | |
| 12660 | actually uses Rel structures, the r_addend field will always be | |
| 12661 | zero. | |
| 12662 | ||
| 12663 | This function is responsible for adjust the section contents as | |
| 12664 | necessary, and (if using Rela relocs and generating a | |
| 1049f94e | 12665 | relocatable output file) adjusting the reloc addend as |
| 5bd4f169 AM |
12666 | necessary. |
| 12667 | ||
| 12668 | This function does not have to worry about setting the reloc | |
| 12669 | address or the reloc symbol index. | |
| 12670 | ||
| 12671 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
| 12672 | ||
| 12673 | LOCAL_SECTIONS is an array giving the section in the input file | |
| 12674 | corresponding to the st_shndx field of each local symbol. | |
| 12675 | ||
| 12676 | The global hash table entry for the global symbols can be found | |
| 12677 | via elf_sym_hashes (input_bfd). | |
| 12678 | ||
| 1049f94e | 12679 | When generating relocatable output, this function must handle |
| 5bd4f169 AM |
12680 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 12681 | going to be the section symbol corresponding to the output | |
| 12682 | section, which means that the addend must be adjusted | |
| 12683 | accordingly. */ | |
| 12684 | ||
| b34976b6 | 12685 | static bfd_boolean |
| 4ce794b7 AM |
12686 | ppc64_elf_relocate_section (bfd *output_bfd, |
| 12687 | struct bfd_link_info *info, | |
| 12688 | bfd *input_bfd, | |
| 12689 | asection *input_section, | |
| 12690 | bfd_byte *contents, | |
| 12691 | Elf_Internal_Rela *relocs, | |
| 12692 | Elf_Internal_Sym *local_syms, | |
| 12693 | asection **local_sections) | |
| 5bd4f169 | 12694 | { |
| 65f38f15 | 12695 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
12696 | Elf_Internal_Shdr *symtab_hdr; |
| 12697 | struct elf_link_hash_entry **sym_hashes; | |
| 5bd4f169 AM |
12698 | Elf_Internal_Rela *rel; |
| 12699 | Elf_Internal_Rela *relend; | |
| 411e1bfb AM |
12700 | Elf_Internal_Rela outrel; |
| 12701 | bfd_byte *loc; | |
| 411e1bfb | 12702 | struct got_entry **local_got_ents; |
| 5bd4f169 | 12703 | bfd_vma TOCstart; |
| b34976b6 AM |
12704 | bfd_boolean ret = TRUE; |
| 12705 | bfd_boolean is_opd; | |
| 794e51c0 AM |
12706 | /* Assume 'at' branch hints. */ |
| 12707 | bfd_boolean is_isa_v2 = TRUE; | |
| 4fe5ca5b | 12708 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
| 5bd4f169 | 12709 | |
| 65f38f15 | 12710 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 12711 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
12712 | ppc_howto_init (); |
| 12713 | ||
| 65f38f15 | 12714 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
12715 | if (htab == NULL) |
| 12716 | return FALSE; | |
| ee75fd95 AM |
12717 | |
| 12718 | /* Don't relocate stub sections. */ | |
| 12719 | if (input_section->owner == htab->stub_bfd) | |
| 12720 | return TRUE; | |
| 12721 | ||
| 0c8d6e5c | 12722 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
| 0ffa91dd | 12723 | |
| 411e1bfb | 12724 | local_got_ents = elf_local_got_ents (input_bfd); |
| 5bd4f169 | 12725 | TOCstart = elf_gp (output_bfd); |
| 0ffa91dd | 12726 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 5bd4f169 | 12727 | sym_hashes = elf_sym_hashes (input_bfd); |
| 7c8fe5c4 | 12728 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
| 65f38f15 | 12729 | |
| 5bd4f169 AM |
12730 | rel = relocs; |
| 12731 | relend = relocs + input_section->reloc_count; | |
| 12732 | for (; rel < relend; rel++) | |
| 12733 | { | |
| 04c9666a | 12734 | enum elf_ppc64_reloc_type r_type; |
| 31c76678 | 12735 | bfd_vma addend; |
| 5bd4f169 AM |
12736 | bfd_reloc_status_type r; |
| 12737 | Elf_Internal_Sym *sym; | |
| 12738 | asection *sec; | |
| 039b3fef AM |
12739 | struct elf_link_hash_entry *h_elf; |
| 12740 | struct ppc_link_hash_entry *h; | |
| 12741 | struct ppc_link_hash_entry *fdh; | |
| 5bd4f169 | 12742 | const char *sym_name; |
| 0d4792f7 | 12743 | unsigned long r_symndx, toc_symndx; |
| 3a71aa26 | 12744 | bfd_vma toc_addend; |
| f961d9dd AM |
12745 | unsigned char tls_mask, tls_gd, tls_type; |
| 12746 | unsigned char sym_type; | |
| 5bd4f169 | 12747 | bfd_vma relocation; |
| b34976b6 AM |
12748 | bfd_boolean unresolved_reloc; |
| 12749 | bfd_boolean warned; | |
| bc30df16 | 12750 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
| 67f0cbdb | 12751 | unsigned int insn; |
| e11840f9 | 12752 | unsigned int mask; |
| 721956f4 AM |
12753 | struct ppc_stub_hash_entry *stub_entry; |
| 12754 | bfd_vma max_br_offset; | |
| 12755 | bfd_vma from; | |
| 31c76678 | 12756 | const Elf_Internal_Rela orig_rel = *rel; |
| 5bd4f169 | 12757 | |
| 4ce794b7 | 12758 | r_type = ELF64_R_TYPE (rel->r_info); |
| 5bd4f169 | 12759 | r_symndx = ELF64_R_SYM (rel->r_info); |
| ee87f2da AM |
12760 | |
| 12761 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
| 12762 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
| 12763 | proper TOC base to use. */ | |
| 12764 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
| 12765 | && rel != relocs | |
| 12766 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
| 12767 | && is_opd) | |
| 12768 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
| 12769 | ||
| 4ce794b7 AM |
12770 | sym = NULL; |
| 12771 | sec = NULL; | |
| 039b3fef | 12772 | h_elf = NULL; |
| 4ce794b7 | 12773 | sym_name = NULL; |
| b34976b6 AM |
12774 | unresolved_reloc = FALSE; |
| 12775 | warned = FALSE; | |
| 65f38f15 | 12776 | |
| 0b13192e | 12777 | if (r_symndx < symtab_hdr->sh_info) |
| 5bd4f169 AM |
12778 | { |
| 12779 | /* It's a local symbol. */ | |
| 74f0fb50 | 12780 | struct _opd_sec_data *opd; |
| 4025353c | 12781 | |
| 5bd4f169 AM |
12782 | sym = local_syms + r_symndx; |
| 12783 | sec = local_sections[r_symndx]; | |
| 26c61ae5 | 12784 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
| 0d4792f7 | 12785 | sym_type = ELF64_ST_TYPE (sym->st_info); |
| 8517fae7 | 12786 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 74f0fb50 AM |
12787 | opd = get_opd_info (sec); |
| 12788 | if (opd != NULL && opd->adjust != NULL) | |
| 1e2f5b6e | 12789 | { |
| 74f0fb50 | 12790 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
| 4025353c AM |
12791 | if (adjust == -1) |
| 12792 | relocation = 0; | |
| 12793 | else | |
| 4cc603a5 AM |
12794 | { |
| 12795 | /* If this is a relocation against the opd section sym | |
| 12796 | and we have edited .opd, adjust the reloc addend so | |
| 12797 | that ld -r and ld --emit-relocs output is correct. | |
| 12798 | If it is a reloc against some other .opd symbol, | |
| 12799 | then the symbol value will be adjusted later. */ | |
| 12800 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
| 12801 | rel->r_addend += adjust; | |
| 12802 | else | |
| 12803 | relocation += adjust; | |
| 12804 | } | |
| 1e2f5b6e | 12805 | } |
| 5bd4f169 AM |
12806 | } |
| 12807 | else | |
| 12808 | { | |
| b2a8e766 AM |
12809 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 12810 | r_symndx, symtab_hdr, sym_hashes, | |
| 039b3fef | 12811 | h_elf, sec, relocation, |
| b2a8e766 | 12812 | unresolved_reloc, warned); |
| 039b3fef AM |
12813 | sym_name = h_elf->root.root.string; |
| 12814 | sym_type = h_elf->type; | |
| b69fdb4e AM |
12815 | if (sec != NULL |
| 12816 | && sec->owner == output_bfd | |
| 12817 | && strcmp (sec->name, ".opd") == 0) | |
| 12818 | { | |
| 12819 | /* This is a symbol defined in a linker script. All | |
| 12820 | such are defined in output sections, even those | |
| 12821 | defined by simple assignment from a symbol defined in | |
| 12822 | an input section. Transfer the symbol to an | |
| 12823 | appropriate input .opd section, so that a branch to | |
| 12824 | this symbol will be mapped to the location specified | |
| 12825 | by the opd entry. */ | |
| 12826 | struct bfd_link_order *lo; | |
| 12827 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
| 12828 | if (lo->type == bfd_indirect_link_order) | |
| 12829 | { | |
| 12830 | asection *isec = lo->u.indirect.section; | |
| 12831 | if (h_elf->root.u.def.value >= isec->output_offset | |
| 12832 | && h_elf->root.u.def.value < (isec->output_offset | |
| 12833 | + isec->size)) | |
| 12834 | { | |
| 12835 | h_elf->root.u.def.value -= isec->output_offset; | |
| 12836 | h_elf->root.u.def.section = isec; | |
| 12837 | sec = isec; | |
| 12838 | break; | |
| 12839 | } | |
| 12840 | } | |
| 12841 | } | |
| 5bd4f169 | 12842 | } |
| 039b3fef | 12843 | h = (struct ppc_link_hash_entry *) h_elf; |
| 5bd4f169 | 12844 | |
| dbaa2011 | 12845 | if (sec != NULL && discarded_section (sec)) |
| e4067dbb | 12846 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 545fd46b MR |
12847 | rel, 1, relend, |
| 12848 | ppc64_elf_howto_table[r_type], 0, | |
| e4067dbb | 12849 | contents); |
| ab96bf03 AM |
12850 | |
| 12851 | if (info->relocatable) | |
| 12852 | continue; | |
| 12853 | ||
| f40da81b AM |
12854 | if (h != NULL && &h->elf == htab->elf.hgot) |
| 12855 | { | |
| 12856 | relocation = (TOCstart | |
| 12857 | + htab->stub_group[input_section->id].toc_off); | |
| 12858 | sec = bfd_abs_section_ptr; | |
| 12859 | unresolved_reloc = FALSE; | |
| 12860 | } | |
| 12861 | ||
| 951fd09b AM |
12862 | /* TLS optimizations. Replace instruction sequences and relocs |
| 12863 | based on information we collected in tls_optimize. We edit | |
| 12864 | RELOCS so that --emit-relocs will output something sensible | |
| 12865 | for the final instruction stream. */ | |
| 12866 | tls_mask = 0; | |
| 12867 | tls_gd = 0; | |
| 0d4792f7 | 12868 | toc_symndx = 0; |
| 727fc41e AM |
12869 | if (h != NULL) |
| 12870 | tls_mask = h->tls_mask; | |
| 12871 | else if (local_got_ents != NULL) | |
| 411e1bfb | 12872 | { |
| e054468f AM |
12873 | struct plt_entry **local_plt = (struct plt_entry **) |
| 12874 | (local_got_ents + symtab_hdr->sh_info); | |
| f961d9dd | 12875 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 12876 | (local_plt + symtab_hdr->sh_info); |
| 727fc41e AM |
12877 | tls_mask = lgot_masks[r_symndx]; |
| 12878 | } | |
| 12879 | if (tls_mask == 0 | |
| 12880 | && (r_type == R_PPC64_TLS | |
| 12881 | || r_type == R_PPC64_TLSGD | |
| 12882 | || r_type == R_PPC64_TLSLD)) | |
| 12883 | { | |
| 12884 | /* Check for toc tls entries. */ | |
| f961d9dd | 12885 | unsigned char *toc_tls; |
| 0d4792f7 | 12886 | |
| 727fc41e AM |
12887 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 12888 | &local_syms, rel, input_bfd)) | |
| 12889 | return FALSE; | |
| 0d4792f7 | 12890 | |
| 727fc41e AM |
12891 | if (toc_tls) |
| 12892 | tls_mask = *toc_tls; | |
| 0d4792f7 AM |
12893 | } |
| 12894 | ||
| 12895 | /* Check that tls relocs are used with tls syms, and non-tls | |
| 12896 | relocs are used with non-tls syms. */ | |
| cf35638d | 12897 | if (r_symndx != STN_UNDEF |
| 0d4792f7 AM |
12898 | && r_type != R_PPC64_NONE |
| 12899 | && (h == NULL | |
| 039b3fef AM |
12900 | || h->elf.root.type == bfd_link_hash_defined |
| 12901 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 1d483afe AM |
12902 | && (IS_PPC64_TLS_RELOC (r_type) |
| 12903 | != (sym_type == STT_TLS | |
| 12904 | || (sym_type == STT_SECTION | |
| 12905 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
| 0d4792f7 | 12906 | { |
| 727fc41e AM |
12907 | if (tls_mask != 0 |
| 12908 | && (r_type == R_PPC64_TLS | |
| 12909 | || r_type == R_PPC64_TLSGD | |
| 12910 | || r_type == R_PPC64_TLSLD)) | |
| 0d4792f7 AM |
12911 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
| 12912 | ; | |
| 12913 | else | |
| 25f53a85 | 12914 | info->callbacks->einfo |
| 1d483afe | 12915 | (!IS_PPC64_TLS_RELOC (r_type) |
| bc30df16 AM |
12916 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
| 12917 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
| 25f53a85 | 12918 | input_bfd, input_section, rel->r_offset, |
| 0d4792f7 AM |
12919 | ppc64_elf_howto_table[r_type]->name, |
| 12920 | sym_name); | |
| 411e1bfb AM |
12921 | } |
| 12922 | ||
| 12923 | /* Ensure reloc mapping code below stays sane. */ | |
| 12924 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
| 12925 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
| 12926 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
| 12927 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
| 12928 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
| 12929 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
| 12930 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
| 12931 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
| 12932 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
| 12933 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
| 12934 | abort (); | |
| 0d4792f7 | 12935 | |
| 411e1bfb AM |
12936 | switch (r_type) |
| 12937 | { | |
| 12938 | default: | |
| 411e1bfb AM |
12939 | break; |
| 12940 | ||
| ba761f19 AM |
12941 | case R_PPC64_LO_DS_OPT: |
| 12942 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
| 12943 | if ((insn & (0x3f << 26)) != 58u << 26) | |
| 12944 | abort (); | |
| 12945 | insn += (14u << 26) - (58u << 26); | |
| 12946 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
| 12947 | r_type = R_PPC64_TOC16_LO; | |
| 12948 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 12949 | break; | |
| 12950 | ||
| 411e1bfb AM |
12951 | case R_PPC64_TOC16: |
| 12952 | case R_PPC64_TOC16_LO: | |
| 12953 | case R_PPC64_TOC16_DS: | |
| 12954 | case R_PPC64_TOC16_LO_DS: | |
| 411e1bfb AM |
12955 | { |
| 12956 | /* Check for toc tls entries. */ | |
| f961d9dd | 12957 | unsigned char *toc_tls; |
| 951fd09b | 12958 | int retval; |
| 411e1bfb | 12959 | |
| 3a71aa26 AM |
12960 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 12961 | &local_syms, rel, input_bfd); | |
| 951fd09b | 12962 | if (retval == 0) |
| 411e1bfb AM |
12963 | return FALSE; |
| 12964 | ||
| 12965 | if (toc_tls) | |
| 12966 | { | |
| 951fd09b | 12967 | tls_mask = *toc_tls; |
| 411e1bfb AM |
12968 | if (r_type == R_PPC64_TOC16_DS |
| 12969 | || r_type == R_PPC64_TOC16_LO_DS) | |
| 81407a69 AM |
12970 | { |
| 12971 | if (tls_mask != 0 | |
| 12972 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
| 12973 | goto toctprel; | |
| 12974 | } | |
| 411e1bfb | 12975 | else |
| 951fd09b AM |
12976 | { |
| 12977 | /* If we found a GD reloc pair, then we might be | |
| 12978 | doing a GD->IE transition. */ | |
| 12979 | if (retval == 2) | |
| 12980 | { | |
| 12981 | tls_gd = TLS_TPRELGD; | |
| 12982 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 12983 | goto tls_ldgd_opt; |
| 951fd09b AM |
12984 | } |
| 12985 | else if (retval == 3) | |
| 12986 | { | |
| 12987 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 102890f0 | 12988 | goto tls_ldgd_opt; |
| 951fd09b AM |
12989 | } |
| 12990 | } | |
| 411e1bfb AM |
12991 | } |
| 12992 | } | |
| 12993 | break; | |
| 12994 | ||
| 9d6ded02 AM |
12995 | case R_PPC64_GOT_TPREL16_HI: |
| 12996 | case R_PPC64_GOT_TPREL16_HA: | |
| 12997 | if (tls_mask != 0 | |
| 12998 | && (tls_mask & TLS_TPREL) == 0) | |
| 12999 | { | |
| 13000 | rel->r_offset -= d_offset; | |
| 13001 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
| 13002 | r_type = R_PPC64_NONE; | |
| 13003 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13004 | } | |
| 13005 | break; | |
| 13006 | ||
| 411e1bfb AM |
13007 | case R_PPC64_GOT_TPREL16_DS: |
| 13008 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 951fd09b AM |
13009 | if (tls_mask != 0 |
| 13010 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 13011 | { |
| 81407a69 | 13012 | toctprel: |
| 4fe5ca5b | 13013 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
| 411e1bfb AM |
13014 | insn &= 31 << 21; |
| 13015 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
| 4fe5ca5b | 13016 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
| 411e1bfb | 13017 | r_type = R_PPC64_TPREL16_HA; |
| 0d4792f7 AM |
13018 | if (toc_symndx != 0) |
| 13019 | { | |
| 13020 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 13021 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
13022 | /* We changed the symbol. Start over in order to |
| 13023 | get h, sym, sec etc. right. */ | |
| 13024 | rel--; | |
| 13025 | continue; | |
| 13026 | } | |
| 13027 | else | |
| 13028 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
13029 | } |
| 13030 | break; | |
| 13031 | ||
| 13032 | case R_PPC64_TLS: | |
| 951fd09b AM |
13033 | if (tls_mask != 0 |
| 13034 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 13035 | { |
| 411e1bfb | 13036 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
| 2d0f3896 AM |
13037 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
| 13038 | if (insn == 0) | |
| 411e1bfb | 13039 | abort (); |
| 411e1bfb | 13040 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
| 411e1bfb | 13041 | /* Was PPC64_TLS which sits on insn boundary, now |
| 4fe5ca5b GM |
13042 | PPC64_TPREL16_LO which is at low-order half-word. */ |
| 13043 | rel->r_offset += d_offset; | |
| 0d4792f7 AM |
13044 | r_type = R_PPC64_TPREL16_LO; |
| 13045 | if (toc_symndx != 0) | |
| 13046 | { | |
| 13047 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 13048 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
13049 | /* We changed the symbol. Start over in order to |
| 13050 | get h, sym, sec etc. right. */ | |
| 13051 | rel--; | |
| 13052 | continue; | |
| 13053 | } | |
| 13054 | else | |
| 13055 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
13056 | } |
| 13057 | break; | |
| 13058 | ||
| 411e1bfb AM |
13059 | case R_PPC64_GOT_TLSGD16_HI: |
| 13060 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b AM |
13061 | tls_gd = TLS_TPRELGD; |
| 13062 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13063 | goto tls_gdld_hi; | |
| 13064 | break; | |
| 13065 | ||
| 411e1bfb AM |
13066 | case R_PPC64_GOT_TLSLD16_HI: |
| 13067 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 13068 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
| 411e1bfb | 13069 | { |
| 951fd09b AM |
13070 | tls_gdld_hi: |
| 13071 | if ((tls_mask & tls_gd) != 0) | |
| 13072 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 13073 | + R_PPC64_GOT_TPREL16_DS); | |
| 13074 | else | |
| 411e1bfb | 13075 | { |
| 4fe5ca5b | 13076 | rel->r_offset -= d_offset; |
| 727ac201 | 13077 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 951fd09b | 13078 | r_type = R_PPC64_NONE; |
| 411e1bfb | 13079 | } |
| 951fd09b | 13080 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb AM |
13081 | } |
| 13082 | break; | |
| 13083 | ||
| 951fd09b AM |
13084 | case R_PPC64_GOT_TLSGD16: |
| 13085 | case R_PPC64_GOT_TLSGD16_LO: | |
| 13086 | tls_gd = TLS_TPRELGD; | |
| 13087 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 13088 | goto tls_ldgd_opt; |
| 951fd09b | 13089 | break; |
| 411e1bfb | 13090 | |
| 951fd09b AM |
13091 | case R_PPC64_GOT_TLSLD16: |
| 13092 | case R_PPC64_GOT_TLSLD16_LO: | |
| 13093 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13094 | { | |
| 3a71aa26 | 13095 | unsigned int insn1, insn2, insn3; |
| 102890f0 AM |
13096 | bfd_vma offset; |
| 13097 | ||
| 13098 | tls_ldgd_opt: | |
| 727fc41e AM |
13099 | offset = (bfd_vma) -1; |
| 13100 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
| 13101 | __tls_get_addr calls, we must trust that the call | |
| 13102 | stays with its arg setup insns, ie. that the next | |
| 13103 | reloc is the __tls_get_addr call associated with | |
| 13104 | the current reloc. Edit both insns. */ | |
| 13105 | if (input_section->has_tls_get_addr_call | |
| 13106 | && rel + 1 < relend | |
| 13107 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
| 13108 | htab->tls_get_addr, | |
| 13109 | htab->tls_get_addr_fd)) | |
| 13110 | offset = rel[1].r_offset; | |
| 102890f0 | 13111 | if ((tls_mask & tls_gd) != 0) |
| 411e1bfb | 13112 | { |
| 102890f0 | 13113 | /* IE */ |
| 3a71aa26 AM |
13114 | insn1 = bfd_get_32 (output_bfd, |
| 13115 | contents + rel->r_offset - d_offset); | |
| 102890f0 AM |
13116 | insn1 &= (1 << 26) - (1 << 2); |
| 13117 | insn1 |= 58 << 26; /* ld */ | |
| 13118 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 727fc41e | 13119 | if (offset != (bfd_vma) -1) |
| f58d5a2d | 13120 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 102890f0 AM |
13121 | if ((tls_mask & TLS_EXPLICIT) == 0) |
| 13122 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 13123 | + R_PPC64_GOT_TPREL16_DS); | |
| 411e1bfb | 13124 | else |
| 102890f0 AM |
13125 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
| 13126 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13127 | } | |
| 13128 | else | |
| 13129 | { | |
| 13130 | /* LE */ | |
| 13131 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
| 13132 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 13133 | if (tls_gd == 0) | |
| 951fd09b | 13134 | { |
| 102890f0 | 13135 | /* Was an LD reloc. */ |
| 1d483afe AM |
13136 | if (toc_symndx) |
| 13137 | sec = local_sections[toc_symndx]; | |
| 13138 | for (r_symndx = 0; | |
| 13139 | r_symndx < symtab_hdr->sh_info; | |
| 13140 | r_symndx++) | |
| 13141 | if (local_sections[r_symndx] == sec) | |
| 13142 | break; | |
| 13143 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13144 | r_symndx = STN_UNDEF; |
| 102890f0 | 13145 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13146 | if (r_symndx != STN_UNDEF) |
| 1d483afe AM |
13147 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13148 | + sec->output_offset | |
| 13149 | + sec->output_section->vma); | |
| 951fd09b | 13150 | } |
| 102890f0 | 13151 | else if (toc_symndx != 0) |
| 3a71aa26 AM |
13152 | { |
| 13153 | r_symndx = toc_symndx; | |
| 13154 | rel->r_addend = toc_addend; | |
| 13155 | } | |
| 102890f0 AM |
13156 | r_type = R_PPC64_TPREL16_HA; |
| 13157 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 727fc41e AM |
13158 | if (offset != (bfd_vma) -1) |
| 13159 | { | |
| 13160 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
| 13161 | R_PPC64_TPREL16_LO); | |
| 13162 | rel[1].r_offset = offset + d_offset; | |
| 13163 | rel[1].r_addend = rel->r_addend; | |
| 13164 | } | |
| 102890f0 | 13165 | } |
| 3a71aa26 AM |
13166 | bfd_put_32 (output_bfd, insn1, |
| 13167 | contents + rel->r_offset - d_offset); | |
| 727fc41e AM |
13168 | if (offset != (bfd_vma) -1) |
| 13169 | { | |
| 13170 | insn3 = bfd_get_32 (output_bfd, | |
| 13171 | contents + offset + 4); | |
| 13172 | if (insn3 == NOP | |
| 13173 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13174 | { | |
| 13175 | rel[1].r_offset += 4; | |
| 13176 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 13177 | insn2 = NOP; | |
| 13178 | } | |
| 13179 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 13180 | } | |
| 13181 | if ((tls_mask & tls_gd) == 0 | |
| 13182 | && (tls_gd == 0 || toc_symndx != 0)) | |
| 13183 | { | |
| 13184 | /* We changed the symbol. Start over in order | |
| 13185 | to get h, sym, sec etc. right. */ | |
| 13186 | rel--; | |
| 13187 | continue; | |
| 13188 | } | |
| 13189 | } | |
| 13190 | break; | |
| 13191 | ||
| 13192 | case R_PPC64_TLSGD: | |
| 13193 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13194 | { | |
| 13195 | unsigned int insn2, insn3; | |
| 13196 | bfd_vma offset = rel->r_offset; | |
| 13197 | ||
| 13198 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13199 | { | |
| 13200 | /* IE */ | |
| 13201 | r_type = R_PPC64_NONE; | |
| 13202 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 13203 | } | |
| 13204 | else | |
| 13205 | { | |
| 13206 | /* LE */ | |
| 13207 | if (toc_symndx != 0) | |
| 13208 | { | |
| 13209 | r_symndx = toc_symndx; | |
| 13210 | rel->r_addend = toc_addend; | |
| 13211 | } | |
| 13212 | r_type = R_PPC64_TPREL16_LO; | |
| 13213 | rel->r_offset = offset + d_offset; | |
| 13214 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 13215 | } | |
| 13216 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13217 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13218 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13219 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 3a71aa26 AM |
13220 | insn3 = bfd_get_32 (output_bfd, |
| 13221 | contents + offset + 4); | |
| 102890f0 AM |
13222 | if (insn3 == NOP |
| 13223 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13224 | { | |
| 727fc41e | 13225 | rel->r_offset += 4; |
| 3a71aa26 AM |
13226 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
| 13227 | insn2 = NOP; | |
| 102890f0 | 13228 | } |
| 102890f0 | 13229 | bfd_put_32 (output_bfd, insn2, contents + offset); |
| 727fc41e | 13230 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
| 102890f0 | 13231 | { |
| 102890f0 AM |
13232 | rel--; |
| 13233 | continue; | |
| 411e1bfb | 13234 | } |
| 411e1bfb | 13235 | } |
| 411e1bfb AM |
13236 | break; |
| 13237 | ||
| 727fc41e AM |
13238 | case R_PPC64_TLSLD: |
| 13239 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13240 | { | |
| 13241 | unsigned int insn2, insn3; | |
| 13242 | bfd_vma offset = rel->r_offset; | |
| 13243 | ||
| 13244 | if (toc_symndx) | |
| 13245 | sec = local_sections[toc_symndx]; | |
| 13246 | for (r_symndx = 0; | |
| 13247 | r_symndx < symtab_hdr->sh_info; | |
| 13248 | r_symndx++) | |
| 13249 | if (local_sections[r_symndx] == sec) | |
| 13250 | break; | |
| 13251 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13252 | r_symndx = STN_UNDEF; |
| 727fc41e | 13253 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13254 | if (r_symndx != STN_UNDEF) |
| 727fc41e AM |
13255 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13256 | + sec->output_offset | |
| 13257 | + sec->output_section->vma); | |
| 13258 | ||
| 13259 | r_type = R_PPC64_TPREL16_LO; | |
| 13260 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13261 | rel->r_offset = offset + d_offset; | |
| 13262 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13263 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13264 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 727fc41e AM |
13265 | insn2 = 0x38630000; /* addi 3,3,0 */ |
| 13266 | insn3 = bfd_get_32 (output_bfd, | |
| 13267 | contents + offset + 4); | |
| 13268 | if (insn3 == NOP | |
| 13269 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13270 | { | |
| 13271 | rel->r_offset += 4; | |
| 13272 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 13273 | insn2 = NOP; | |
| 13274 | } | |
| 13275 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 13276 | rel--; | |
| 13277 | continue; | |
| 13278 | } | |
| 13279 | break; | |
| 13280 | ||
| 411e1bfb | 13281 | case R_PPC64_DTPMOD64: |
| 951fd09b AM |
13282 | if (rel + 1 < relend |
| 13283 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 13284 | && rel[1].r_offset == rel->r_offset + 8) | |
| 411e1bfb | 13285 | { |
| 951fd09b AM |
13286 | if ((tls_mask & TLS_GD) == 0) |
| 13287 | { | |
| 13288 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
| 13289 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13290 | r_type = R_PPC64_TPREL64; | |
| 13291 | else | |
| 13292 | { | |
| 4ce794b7 | 13293 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 951fd09b AM |
13294 | r_type = R_PPC64_NONE; |
| 13295 | } | |
| 13296 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13297 | } | |
| 13298 | } | |
| 13299 | else | |
| 13300 | { | |
| 13301 | if ((tls_mask & TLS_LD) == 0) | |
| 411e1bfb | 13302 | { |
| 4ce794b7 | 13303 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 411e1bfb | 13304 | r_type = R_PPC64_NONE; |
| 951fd09b | 13305 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb | 13306 | } |
| 411e1bfb AM |
13307 | } |
| 13308 | break; | |
| 13309 | ||
| 13310 | case R_PPC64_TPREL64: | |
| 951fd09b | 13311 | if ((tls_mask & TLS_TPREL) == 0) |
| 411e1bfb AM |
13312 | { |
| 13313 | r_type = R_PPC64_NONE; | |
| 13314 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13315 | } | |
| 13316 | break; | |
| 13317 | } | |
| 13318 | ||
| 13319 | /* Handle other relocations that tweak non-addend part of insn. */ | |
| 86c76c7b | 13320 | insn = 0; |
| b25116a9 AM |
13321 | max_br_offset = 1 << 25; |
| 13322 | addend = rel->r_addend; | |
| bc30df16 | 13323 | reloc_dest = DEST_NORMAL; |
| 65f38f15 | 13324 | switch (r_type) |
| 5bd4f169 AM |
13325 | { |
| 13326 | default: | |
| 65f38f15 | 13327 | break; |
| 5bd4f169 | 13328 | |
| 3b421ab3 AM |
13329 | case R_PPC64_TOCSAVE: |
| 13330 | if (relocation + addend == (rel->r_offset | |
| 13331 | + input_section->output_offset | |
| 13332 | + input_section->output_section->vma) | |
| 13333 | && tocsave_find (htab, NO_INSERT, | |
| 13334 | &local_syms, rel, input_bfd)) | |
| 13335 | { | |
| 13336 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 13337 | if (insn == NOP | |
| 13338 | || insn == CROR_151515 || insn == CROR_313131) | |
| 13339 | bfd_put_32 (input_bfd, STD_R2_40R1, | |
| 13340 | contents + rel->r_offset); | |
| 13341 | } | |
| 13342 | break; | |
| 13343 | ||
| 65f38f15 AM |
13344 | /* Branch taken prediction relocations. */ |
| 13345 | case R_PPC64_ADDR14_BRTAKEN: | |
| 13346 | case R_PPC64_REL14_BRTAKEN: | |
| cedb70c5 KH |
13347 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 13348 | /* Fall thru. */ | |
| 65f38f15 | 13349 | |
| 86c76c7b | 13350 | /* Branch not taken prediction relocations. */ |
| 65f38f15 AM |
13351 | case R_PPC64_ADDR14_BRNTAKEN: |
| 13352 | case R_PPC64_REL14_BRNTAKEN: | |
| 411e1bfb AM |
13353 | insn |= bfd_get_32 (output_bfd, |
| 13354 | contents + rel->r_offset) & ~(0x01 << 21); | |
| b25116a9 | 13355 | /* Fall thru. */ |
| 86c76c7b | 13356 | |
| b25116a9 AM |
13357 | case R_PPC64_REL14: |
| 13358 | max_br_offset = 1 << 15; | |
| 13359 | /* Fall thru. */ | |
| 5bd4f169 | 13360 | |
| 65f38f15 | 13361 | case R_PPC64_REL24: |
| ad8e1ba5 AM |
13362 | /* Calls to functions with a different TOC, such as calls to |
| 13363 | shared objects, need to alter the TOC pointer. This is | |
| 13364 | done using a linkage stub. A REL24 branching to these | |
| 13365 | linkage stubs needs to be followed by a nop, as the nop | |
| 13366 | will be replaced with an instruction to restore the TOC | |
| 13367 | base pointer. */ | |
| 8387904d | 13368 | fdh = h; |
| b31867b6 AM |
13369 | if (h != NULL |
| 13370 | && h->oh != NULL | |
| 13371 | && h->oh->is_func_descriptor) | |
| 13372 | fdh = ppc_follow_link (h->oh); | |
| 31c76678 DK |
13373 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
| 13374 | htab); | |
| 6abec6bc | 13375 | if (stub_entry != NULL |
| ad8e1ba5 | 13376 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 794e51c0 | 13377 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
| ad8e1ba5 AM |
13378 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
| 13379 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
| 41bd81ab | 13380 | { |
| b25116a9 | 13381 | bfd_boolean can_plt_call = FALSE; |
| 721956f4 | 13382 | |
| ba8ca3e7 AM |
13383 | /* All of these stubs will modify r2, so there must be a |
| 13384 | branch and link followed by a nop. The nop is | |
| 13385 | replaced by an insn to restore r2. */ | |
| eea6121a | 13386 | if (rel->r_offset + 8 <= input_section->size) |
| 41bd81ab | 13387 | { |
| ba8ca3e7 AM |
13388 | unsigned long br; |
| 13389 | ||
| 13390 | br = bfd_get_32 (input_bfd, | |
| 13391 | contents + rel->r_offset); | |
| 13392 | if ((br & 1) != 0) | |
| 41bd81ab | 13393 | { |
| ba8ca3e7 AM |
13394 | unsigned long nop; |
| 13395 | ||
| 13396 | nop = bfd_get_32 (input_bfd, | |
| 13397 | contents + rel->r_offset + 4); | |
| 13398 | if (nop == NOP | |
| 13399 | || nop == CROR_151515 || nop == CROR_313131) | |
| a7f2871e | 13400 | { |
| ba8ca3e7 AM |
13401 | if (h != NULL |
| 13402 | && (h == htab->tls_get_addr_fd | |
| 13403 | || h == htab->tls_get_addr) | |
| 13404 | && !htab->no_tls_get_addr_opt) | |
| 13405 | { | |
| 13406 | /* Special stub used, leave nop alone. */ | |
| 13407 | } | |
| 13408 | else | |
| 13409 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
| 13410 | contents + rel->r_offset + 4); | |
| 13411 | can_plt_call = TRUE; | |
| a7f2871e | 13412 | } |
| 41bd81ab | 13413 | } |
| 5bd4f169 | 13414 | } |
| 721956f4 | 13415 | |
| ba8ca3e7 | 13416 | if (!can_plt_call && h != NULL) |
| 721956f4 | 13417 | { |
| ba8ca3e7 AM |
13418 | const char *name = h->elf.root.root.string; |
| 13419 | ||
| 13420 | if (*name == '.') | |
| 13421 | ++name; | |
| 13422 | ||
| 13423 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
| 13424 | && (name[17] == 0 || name[17] == '@')) | |
| 6ab189d5 | 13425 | { |
| ba8ca3e7 AM |
13426 | /* Allow crt1 branch to go via a toc adjusting |
| 13427 | stub. Other calls that never return could do | |
| 13428 | the same, if we could detect such. */ | |
| b25116a9 | 13429 | can_plt_call = TRUE; |
| 6ab189d5 | 13430 | } |
| ba8ca3e7 AM |
13431 | } |
| 13432 | ||
| 13433 | if (!can_plt_call) | |
| 13434 | { | |
| 13435 | /* g++ as of 20130507 emits self-calls without a | |
| 13436 | following nop. This is arguably wrong since we | |
| 13437 | have conflicting information. On the one hand a | |
| 13438 | global symbol and on the other a local call | |
| 13439 | sequence, but don't error for this special case. | |
| 13440 | It isn't possible to cheaply verify we have | |
| 13441 | exactly such a call. Allow all calls to the same | |
| 13442 | section. */ | |
| 13443 | asection *code_sec = sec; | |
| 13444 | ||
| 13445 | if (get_opd_info (sec) != NULL) | |
| ad8e1ba5 | 13446 | { |
| ba8ca3e7 AM |
13447 | bfd_vma off = (relocation + addend |
| 13448 | - sec->output_section->vma | |
| 13449 | - sec->output_offset); | |
| bc30df16 | 13450 | |
| ba8ca3e7 | 13451 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
| ad8e1ba5 | 13452 | } |
| ba8ca3e7 AM |
13453 | if (code_sec == input_section) |
| 13454 | can_plt_call = TRUE; | |
| 13455 | } | |
| 13456 | ||
| 13457 | if (!can_plt_call) | |
| 13458 | { | |
| 13459 | info->callbacks->einfo | |
| 13460 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
| 13461 | "recompile with -fPIC"), | |
| 13462 | input_bfd, input_section, rel->r_offset, sym_name); | |
| 13463 | ||
| 13464 | bfd_set_error (bfd_error_bad_value); | |
| 13465 | ret = FALSE; | |
| 721956f4 AM |
13466 | } |
| 13467 | ||
| b25116a9 | 13468 | if (can_plt_call |
| 794e51c0 AM |
13469 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 13470 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
| b25116a9 AM |
13471 | unresolved_reloc = FALSE; |
| 13472 | } | |
| 13473 | ||
| 6abec6bc AM |
13474 | if ((stub_entry == NULL |
| 13475 | || stub_entry->stub_type == ppc_stub_long_branch | |
| 13476 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 8387904d AM |
13477 | && get_opd_info (sec) != NULL) |
| 13478 | { | |
| 13479 | /* The branch destination is the value of the opd entry. */ | |
| 4cc603a5 AM |
13480 | bfd_vma off = (relocation + addend |
| 13481 | - sec->output_section->vma | |
| 13482 | - sec->output_offset); | |
| aef36ac1 | 13483 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
| 8387904d AM |
13484 | if (dest != (bfd_vma) -1) |
| 13485 | { | |
| 13486 | relocation = dest; | |
| 13487 | addend = 0; | |
| bc30df16 | 13488 | reloc_dest = DEST_OPD; |
| 8387904d AM |
13489 | } |
| 13490 | } | |
| 13491 | ||
| b25116a9 AM |
13492 | /* If the branch is out of reach we ought to have a long |
| 13493 | branch stub. */ | |
| 13494 | from = (rel->r_offset | |
| 13495 | + input_section->output_offset | |
| 13496 | + input_section->output_section->vma); | |
| 13497 | ||
| 6911b7dc AM |
13498 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
| 13499 | ? fdh->elf.other | |
| 13500 | : sym->st_other); | |
| 13501 | ||
| 6abec6bc AM |
13502 | if (stub_entry != NULL |
| 13503 | && (stub_entry->stub_type == ppc_stub_long_branch | |
| 13504 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 13505 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
| 13506 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
| 13507 | || (relocation + addend - from + max_br_offset | |
| 13508 | < 2 * max_br_offset))) | |
| 13509 | /* Don't use the stub if this branch is in range. */ | |
| 13510 | stub_entry = NULL; | |
| b25116a9 AM |
13511 | |
| 13512 | if (stub_entry != NULL) | |
| 13513 | { | |
| 13514 | /* Munge up the value and addend so that we call the stub | |
| 13515 | rather than the procedure directly. */ | |
| 13516 | relocation = (stub_entry->stub_offset | |
| 13517 | + stub_entry->stub_sec->output_offset | |
| 13518 | + stub_entry->stub_sec->output_section->vma); | |
| 13519 | addend = 0; | |
| bc30df16 | 13520 | reloc_dest = DEST_STUB; |
| 3b421ab3 | 13521 | |
| 794e51c0 AM |
13522 | if ((stub_entry->stub_type == ppc_stub_plt_call |
| 13523 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 13524 | && (ALWAYS_EMIT_R2SAVE | |
| 13525 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 3b421ab3 AM |
13526 | && rel + 1 < relend |
| 13527 | && rel[1].r_offset == rel->r_offset + 4 | |
| 13528 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
| 13529 | relocation += 4; | |
| b25116a9 AM |
13530 | } |
| 13531 | ||
| 13532 | if (insn != 0) | |
| 13533 | { | |
| 794e51c0 | 13534 | if (is_isa_v2) |
| 721956f4 | 13535 | { |
| b25116a9 AM |
13536 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 13537 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 13538 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 13539 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 13540 | insn |= 0x02 << 21; | |
| 13541 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 13542 | insn |= 0x08 << 21; | |
| 13543 | else | |
| 13544 | break; | |
| 13545 | } | |
| 13546 | else | |
| 13547 | { | |
| 13548 | /* Invert 'y' bit if not the default. */ | |
| 4cc603a5 | 13549 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
| b25116a9 | 13550 | insn ^= 0x01 << 21; |
| 721956f4 | 13551 | } |
| b25116a9 AM |
13552 | |
| 13553 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
| 5bd4f169 | 13554 | } |
| e86ce104 | 13555 | |
| 06da1e8e AM |
13556 | /* NOP out calls to undefined weak functions. |
| 13557 | We can thus call a weak function without first | |
| 13558 | checking whether the function is defined. */ | |
| b25116a9 | 13559 | else if (h != NULL |
| 039b3fef | 13560 | && h->elf.root.type == bfd_link_hash_undefweak |
| 766bc656 | 13561 | && h->elf.dynindx == -1 |
| b25116a9 AM |
13562 | && r_type == R_PPC64_REL24 |
| 13563 | && relocation == 0 | |
| 4cc603a5 | 13564 | && addend == 0) |
| e86ce104 | 13565 | { |
| 06da1e8e AM |
13566 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 13567 | continue; | |
| e86ce104 | 13568 | } |
| 65f38f15 AM |
13569 | break; |
| 13570 | } | |
| 5bd4f169 | 13571 | |
| 65f38f15 | 13572 | /* Set `addend'. */ |
| 411e1bfb | 13573 | tls_type = 0; |
| 65f38f15 AM |
13574 | switch (r_type) |
| 13575 | { | |
| 13576 | default: | |
| 25f53a85 | 13577 | info->callbacks->einfo |
| bc30df16 | 13578 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
| d003868e | 13579 | input_bfd, (int) r_type, sym_name); |
| 5bd4f169 | 13580 | |
| 65f38f15 | 13581 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 13582 | ret = FALSE; |
| 65f38f15 | 13583 | continue; |
| 5bd4f169 | 13584 | |
| 65f38f15 | 13585 | case R_PPC64_NONE: |
| 411e1bfb | 13586 | case R_PPC64_TLS: |
| 727fc41e AM |
13587 | case R_PPC64_TLSGD: |
| 13588 | case R_PPC64_TLSLD: | |
| 3b421ab3 | 13589 | case R_PPC64_TOCSAVE: |
| 04c9666a AM |
13590 | case R_PPC64_GNU_VTINHERIT: |
| 13591 | case R_PPC64_GNU_VTENTRY: | |
| 65f38f15 | 13592 | continue; |
| 5bd4f169 AM |
13593 | |
| 13594 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
| 13595 | address in the GOT as relocation value instead of the | |
| 411e1bfb | 13596 | symbol's value itself. Also, create a GOT entry for the |
| 5bd4f169 | 13597 | symbol and put the symbol value there. */ |
| 411e1bfb AM |
13598 | case R_PPC64_GOT_TLSGD16: |
| 13599 | case R_PPC64_GOT_TLSGD16_LO: | |
| 13600 | case R_PPC64_GOT_TLSGD16_HI: | |
| 13601 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 13602 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
13603 | goto dogot; |
| 13604 | ||
| 13605 | case R_PPC64_GOT_TLSLD16: | |
| 13606 | case R_PPC64_GOT_TLSLD16_LO: | |
| 13607 | case R_PPC64_GOT_TLSLD16_HI: | |
| 13608 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 13609 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
13610 | goto dogot; |
| 13611 | ||
| 13612 | case R_PPC64_GOT_TPREL16_DS: | |
| 13613 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 13614 | case R_PPC64_GOT_TPREL16_HI: | |
| 13615 | case R_PPC64_GOT_TPREL16_HA: | |
| 13616 | tls_type = TLS_TLS | TLS_TPREL; | |
| 13617 | goto dogot; | |
| 13618 | ||
| 13619 | case R_PPC64_GOT_DTPREL16_DS: | |
| 13620 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 13621 | case R_PPC64_GOT_DTPREL16_HI: | |
| 13622 | case R_PPC64_GOT_DTPREL16_HA: | |
| 13623 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 13624 | goto dogot; | |
| 13625 | ||
| 65f38f15 AM |
13626 | case R_PPC64_GOT16: |
| 13627 | case R_PPC64_GOT16_LO: | |
| 13628 | case R_PPC64_GOT16_HI: | |
| 13629 | case R_PPC64_GOT16_HA: | |
| 13630 | case R_PPC64_GOT16_DS: | |
| 13631 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb | 13632 | dogot: |
| 5bd4f169 AM |
13633 | { |
| 13634 | /* Relocation is to the entry for this symbol in the global | |
| 13635 | offset table. */ | |
| e717da7e | 13636 | asection *got; |
| d881513a | 13637 | bfd_vma *offp; |
| 5bd4f169 | 13638 | bfd_vma off; |
| d881513a | 13639 | unsigned long indx = 0; |
| 927be08e | 13640 | struct got_entry *ent; |
| 65f38f15 | 13641 | |
| d881513a AM |
13642 | if (tls_type == (TLS_TLS | TLS_LD) |
| 13643 | && (h == NULL | |
| f5385ebf | 13644 | || !h->elf.def_dynamic)) |
| 927be08e | 13645 | ent = ppc64_tlsld_got (input_bfd); |
| 411e1bfb | 13646 | else |
| 5bd4f169 | 13647 | { |
| 5bd4f169 | 13648 | |
| d881513a AM |
13649 | if (h != NULL) |
| 13650 | { | |
| 13651 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
| 039b3fef AM |
13652 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
| 13653 | &h->elf) | |
| d881513a | 13654 | || (info->shared |
| 726d3ab0 | 13655 | && SYMBOL_CALLS_LOCAL (info, &h->elf))) |
| d881513a AM |
13656 | /* This is actually a static link, or it is a |
| 13657 | -Bsymbolic link and the symbol is defined | |
| 13658 | locally, or the symbol was forced to be local | |
| 13659 | because of a version file. */ | |
| 13660 | ; | |
| 13661 | else | |
| 13662 | { | |
| 14acf4dc | 13663 | BFD_ASSERT (h->elf.dynindx != -1); |
| 039b3fef | 13664 | indx = h->elf.dynindx; |
| d881513a AM |
13665 | unresolved_reloc = FALSE; |
| 13666 | } | |
| 039b3fef | 13667 | ent = h->elf.got.glist; |
| d881513a | 13668 | } |
| 411e1bfb | 13669 | else |
| 5bd4f169 | 13670 | { |
| d881513a AM |
13671 | if (local_got_ents == NULL) |
| 13672 | abort (); | |
| 13673 | ent = local_got_ents[r_symndx]; | |
| 5bd4f169 | 13674 | } |
| d881513a AM |
13675 | |
| 13676 | for (; ent != NULL; ent = ent->next) | |
| 31c76678 | 13677 | if (ent->addend == orig_rel.r_addend |
| e717da7e | 13678 | && ent->owner == input_bfd |
| d881513a AM |
13679 | && ent->tls_type == tls_type) |
| 13680 | break; | |
| 5bd4f169 | 13681 | } |
| 411e1bfb | 13682 | |
| 927be08e AM |
13683 | if (ent == NULL) |
| 13684 | abort (); | |
| 13685 | if (ent->is_indirect) | |
| 13686 | ent = ent->got.ent; | |
| 13687 | offp = &ent->got.offset; | |
| 13688 | got = ppc64_elf_tdata (ent->owner)->got; | |
| e717da7e AM |
13689 | if (got == NULL) |
| 13690 | abort (); | |
| 13691 | ||
| 411e1bfb AM |
13692 | /* The offset must always be a multiple of 8. We use the |
| 13693 | least significant bit to record whether we have already | |
| 13694 | processed this entry. */ | |
| d881513a | 13695 | off = *offp; |
| 411e1bfb AM |
13696 | if ((off & 1) != 0) |
| 13697 | off &= ~1; | |
| 5bd4f169 AM |
13698 | else |
| 13699 | { | |
| 411e1bfb AM |
13700 | /* Generate relocs for the dynamic linker, except in |
| 13701 | the case of TLSLD where we'll use one entry per | |
| 13702 | module. */ | |
| 25f23106 AM |
13703 | asection *relgot; |
| 13704 | bfd_boolean ifunc; | |
| e717da7e | 13705 | |
| d881513a | 13706 | *offp = off | 1; |
| 25f23106 AM |
13707 | relgot = NULL; |
| 13708 | ifunc = (h != NULL | |
| 13709 | ? h->elf.type == STT_GNU_IFUNC | |
| 13710 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
| 19e08130 | 13711 | if (ifunc) |
| 25f23106 | 13712 | relgot = htab->reliplt; |
| 19e08130 AM |
13713 | else if ((info->shared || indx != 0) |
| 13714 | && (h == NULL | |
| 13715 | || (tls_type == (TLS_TLS | TLS_LD) | |
| 13716 | && !h->elf.def_dynamic) | |
| 13717 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
| 13718 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
| 13719 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
| 25f23106 | 13720 | if (relgot != NULL) |
| 5bd4f169 | 13721 | { |
| e717da7e AM |
13722 | outrel.r_offset = (got->output_section->vma |
| 13723 | + got->output_offset | |
| 411e1bfb | 13724 | + off); |
| 4cc603a5 | 13725 | outrel.r_addend = addend; |
| d881513a | 13726 | if (tls_type & (TLS_LD | TLS_GD)) |
| 5bd4f169 | 13727 | { |
| 411e1bfb | 13728 | outrel.r_addend = 0; |
| e515b051 | 13729 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
| d881513a AM |
13730 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 13731 | { | |
| e717da7e AM |
13732 | loc = relgot->contents; |
| 13733 | loc += (relgot->reloc_count++ | |
| d881513a AM |
13734 | * sizeof (Elf64_External_Rela)); |
| 13735 | bfd_elf64_swap_reloca_out (output_bfd, | |
| 13736 | &outrel, loc); | |
| e515b051 | 13737 | outrel.r_offset += 8; |
| 4cc603a5 | 13738 | outrel.r_addend = addend; |
| d881513a AM |
13739 | outrel.r_info |
| 13740 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
| d881513a | 13741 | } |
| 411e1bfb | 13742 | } |
| 951fd09b | 13743 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
| 411e1bfb | 13744 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
| 951fd09b | 13745 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 13746 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
| 25f23106 AM |
13747 | else if (indx != 0) |
| 13748 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
| 13749 | else | |
| 81407a69 | 13750 | { |
| 25f23106 AM |
13751 | if (ifunc) |
| 13752 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 13753 | else | |
| 13754 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 AM |
13755 | |
| 13756 | /* Write the .got section contents for the sake | |
| 13757 | of prelink. */ | |
| e717da7e | 13758 | loc = got->contents + off; |
| 23fbd6fa JJ |
13759 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
| 13760 | loc); | |
| 81407a69 | 13761 | } |
| 81407a69 AM |
13762 | |
| 13763 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
| e515b051 AM |
13764 | { |
| 13765 | outrel.r_addend += relocation; | |
| 13766 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
| e1918d23 | 13767 | outrel.r_addend -= htab->elf.tls_sec->vma; |
| e515b051 | 13768 | } |
| e717da7e AM |
13769 | loc = relgot->contents; |
| 13770 | loc += (relgot->reloc_count++ | |
| 411e1bfb AM |
13771 | * sizeof (Elf64_External_Rela)); |
| 13772 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
| 13773 | } | |
| 13774 | ||
| ad8e1ba5 | 13775 | /* Init the .got section contents here if we're not |
| 81407a69 | 13776 | emitting a reloc. */ |
| d881513a | 13777 | else |
| 411e1bfb | 13778 | { |
| 4cc603a5 | 13779 | relocation += addend; |
| 7b609f53 AM |
13780 | if (tls_type == (TLS_TLS | TLS_LD)) |
| 13781 | relocation = 1; | |
| 13782 | else if (tls_type != 0) | |
| 411e1bfb | 13783 | { |
| e1918d23 | 13784 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 7b609f53 | 13785 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 13786 | relocation += DTP_OFFSET - TP_OFFSET; |
| 5bd4f169 | 13787 | |
| 7b609f53 AM |
13788 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 13789 | { | |
| 13790 | bfd_put_64 (output_bfd, relocation, | |
| e717da7e | 13791 | got->contents + off + 8); |
| 7b609f53 AM |
13792 | relocation = 1; |
| 13793 | } | |
| 411e1bfb | 13794 | } |
| 7b609f53 | 13795 | |
| 411e1bfb | 13796 | bfd_put_64 (output_bfd, relocation, |
| e717da7e | 13797 | got->contents + off); |
| 5bd4f169 AM |
13798 | } |
| 13799 | } | |
| 13800 | ||
| 65f38f15 AM |
13801 | if (off >= (bfd_vma) -2) |
| 13802 | abort (); | |
| 13803 | ||
| bf102f86 AM |
13804 | relocation = got->output_section->vma + got->output_offset + off; |
| 13805 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
| 5bd4f169 | 13806 | } |
| 65f38f15 AM |
13807 | break; |
| 13808 | ||
| 13809 | case R_PPC64_PLT16_HA: | |
| 13810 | case R_PPC64_PLT16_HI: | |
| 13811 | case R_PPC64_PLT16_LO: | |
| 13812 | case R_PPC64_PLT32: | |
| 13813 | case R_PPC64_PLT64: | |
| 13814 | /* Relocation is to the entry for this symbol in the | |
| 13815 | procedure linkage table. */ | |
| 13816 | ||
| 13817 | /* Resolve a PLT reloc against a local symbol directly, | |
| 13818 | without using the procedure linkage table. */ | |
| 13819 | if (h == NULL) | |
| 13820 | break; | |
| 13821 | ||
| 411e1bfb AM |
13822 | /* It's possible that we didn't make a PLT entry for this |
| 13823 | symbol. This happens when statically linking PIC code, | |
| 13824 | or when using -Bsymbolic. Go find a match if there is a | |
| 13825 | PLT entry. */ | |
| 4ce794b7 | 13826 | if (htab->plt != NULL) |
| 65f38f15 | 13827 | { |
| 411e1bfb | 13828 | struct plt_entry *ent; |
| 039b3fef | 13829 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
| 31c76678 | 13830 | if (ent->addend == orig_rel.r_addend |
| 411e1bfb AM |
13831 | && ent->plt.offset != (bfd_vma) -1) |
| 13832 | { | |
| 4ce794b7 AM |
13833 | relocation = (htab->plt->output_section->vma |
| 13834 | + htab->plt->output_offset | |
| 411e1bfb AM |
13835 | + ent->plt.offset); |
| 13836 | unresolved_reloc = FALSE; | |
| 13837 | } | |
| 65f38f15 | 13838 | } |
| 65f38f15 | 13839 | break; |
| 5bd4f169 | 13840 | |
| 0b13192e AM |
13841 | case R_PPC64_TOC: |
| 13842 | /* Relocation value is TOC base. */ | |
| 13843 | relocation = TOCstart; | |
| cf35638d | 13844 | if (r_symndx == STN_UNDEF) |
| 0b13192e | 13845 | relocation += htab->stub_group[input_section->id].toc_off; |
| 8517fae7 AM |
13846 | else if (unresolved_reloc) |
| 13847 | ; | |
| 13848 | else if (sec != NULL && sec->id <= htab->top_id) | |
| 0b13192e AM |
13849 | relocation += htab->stub_group[sec->id].toc_off; |
| 13850 | else | |
| 13851 | unresolved_reloc = TRUE; | |
| ab96bf03 | 13852 | goto dodyn; |
| 0b13192e | 13853 | |
| 5bd4f169 AM |
13854 | /* TOC16 relocs. We want the offset relative to the TOC base, |
| 13855 | which is the address of the start of the TOC plus 0x8000. | |
| 13856 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
| 13857 | in this order. */ | |
| 65f38f15 AM |
13858 | case R_PPC64_TOC16: |
| 13859 | case R_PPC64_TOC16_LO: | |
| 13860 | case R_PPC64_TOC16_HI: | |
| 13861 | case R_PPC64_TOC16_DS: | |
| 13862 | case R_PPC64_TOC16_LO_DS: | |
| 13863 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 13864 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
| 5bd4f169 AM |
13865 | break; |
| 13866 | ||
| 13867 | /* Relocate against the beginning of the section. */ | |
| 65f38f15 AM |
13868 | case R_PPC64_SECTOFF: |
| 13869 | case R_PPC64_SECTOFF_LO: | |
| 13870 | case R_PPC64_SECTOFF_HI: | |
| 13871 | case R_PPC64_SECTOFF_DS: | |
| 13872 | case R_PPC64_SECTOFF_LO_DS: | |
| 13873 | case R_PPC64_SECTOFF_HA: | |
| 4ce794b7 | 13874 | if (sec != NULL) |
| 65f38f15 | 13875 | addend -= sec->output_section->vma; |
| 5bd4f169 AM |
13876 | break; |
| 13877 | ||
| 25f23106 AM |
13878 | case R_PPC64_REL16: |
| 13879 | case R_PPC64_REL16_LO: | |
| 13880 | case R_PPC64_REL16_HI: | |
| 13881 | case R_PPC64_REL16_HA: | |
| 13882 | break; | |
| 13883 | ||
| 721956f4 AM |
13884 | case R_PPC64_REL14: |
| 13885 | case R_PPC64_REL14_BRNTAKEN: | |
| 13886 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 AM |
13887 | case R_PPC64_REL24: |
| 13888 | break; | |
| 13889 | ||
| 411e1bfb AM |
13890 | case R_PPC64_TPREL16: |
| 13891 | case R_PPC64_TPREL16_LO: | |
| 13892 | case R_PPC64_TPREL16_HI: | |
| 13893 | case R_PPC64_TPREL16_HA: | |
| 13894 | case R_PPC64_TPREL16_DS: | |
| 13895 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
13896 | case R_PPC64_TPREL16_HIGH: |
| 13897 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
13898 | case R_PPC64_TPREL16_HIGHER: |
| 13899 | case R_PPC64_TPREL16_HIGHERA: | |
| 13900 | case R_PPC64_TPREL16_HIGHEST: | |
| 13901 | case R_PPC64_TPREL16_HIGHESTA: | |
| 766bc656 AM |
13902 | if (h != NULL |
| 13903 | && h->elf.root.type == bfd_link_hash_undefweak | |
| 13904 | && h->elf.dynindx == -1) | |
| 13905 | { | |
| 13906 | /* Make this relocation against an undefined weak symbol | |
| 13907 | resolve to zero. This is really just a tweak, since | |
| 13908 | code using weak externs ought to check that they are | |
| 13909 | defined before using them. */ | |
| 13910 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
| 13911 | ||
| 13912 | insn = bfd_get_32 (output_bfd, p); | |
| 13913 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
| 13914 | if (insn != 0) | |
| 13915 | bfd_put_32 (output_bfd, insn, p); | |
| 13916 | break; | |
| 13917 | } | |
| e1918d23 | 13918 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
13919 | if (info->shared) |
| 13920 | /* The TPREL16 relocs shouldn't really be used in shared | |
| 13921 | libs as they will result in DT_TEXTREL being set, but | |
| 13922 | support them anyway. */ | |
| 13923 | goto dodyn; | |
| 13924 | break; | |
| 13925 | ||
| 13926 | case R_PPC64_DTPREL16: | |
| 13927 | case R_PPC64_DTPREL16_LO: | |
| 13928 | case R_PPC64_DTPREL16_HI: | |
| 13929 | case R_PPC64_DTPREL16_HA: | |
| 13930 | case R_PPC64_DTPREL16_DS: | |
| 13931 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
13932 | case R_PPC64_DTPREL16_HIGH: |
| 13933 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
13934 | case R_PPC64_DTPREL16_HIGHER: |
| 13935 | case R_PPC64_DTPREL16_HIGHERA: | |
| 13936 | case R_PPC64_DTPREL16_HIGHEST: | |
| 13937 | case R_PPC64_DTPREL16_HIGHESTA: | |
| e1918d23 | 13938 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
13939 | break; |
| 13940 | ||
| e515b051 AM |
13941 | case R_PPC64_DTPMOD64: |
| 13942 | relocation = 1; | |
| 13943 | addend = 0; | |
| 13944 | goto dodyn; | |
| 13945 | ||
| 411e1bfb | 13946 | case R_PPC64_TPREL64: |
| e1918d23 | 13947 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
13948 | goto dodyn; |
| 13949 | ||
| 13950 | case R_PPC64_DTPREL64: | |
| e1918d23 | 13951 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
13952 | /* Fall thru */ |
| 13953 | ||
| 65f38f15 AM |
13954 | /* Relocations that may need to be propagated if this is a |
| 13955 | dynamic object. */ | |
| 04c9666a | 13956 | case R_PPC64_REL30: |
| 65f38f15 AM |
13957 | case R_PPC64_REL32: |
| 13958 | case R_PPC64_REL64: | |
| 13959 | case R_PPC64_ADDR14: | |
| 13960 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 13961 | case R_PPC64_ADDR14_BRTAKEN: | |
| 13962 | case R_PPC64_ADDR16: | |
| 13963 | case R_PPC64_ADDR16_DS: | |
| 13964 | case R_PPC64_ADDR16_HA: | |
| 13965 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
13966 | case R_PPC64_ADDR16_HIGH: |
| 13967 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
13968 | case R_PPC64_ADDR16_HIGHER: |
| 13969 | case R_PPC64_ADDR16_HIGHERA: | |
| 13970 | case R_PPC64_ADDR16_HIGHEST: | |
| 13971 | case R_PPC64_ADDR16_HIGHESTA: | |
| 13972 | case R_PPC64_ADDR16_LO: | |
| 13973 | case R_PPC64_ADDR16_LO_DS: | |
| 13974 | case R_PPC64_ADDR24: | |
| 65f38f15 AM |
13975 | case R_PPC64_ADDR32: |
| 13976 | case R_PPC64_ADDR64: | |
| 13977 | case R_PPC64_UADDR16: | |
| 13978 | case R_PPC64_UADDR32: | |
| 13979 | case R_PPC64_UADDR64: | |
| 411e1bfb | 13980 | dodyn: |
| 5d1634d7 | 13981 | if ((input_section->flags & SEC_ALLOC) == 0) |
| ec338859 AM |
13982 | break; |
| 13983 | ||
| 41bd81ab AM |
13984 | if (NO_OPD_RELOCS && is_opd) |
| 13985 | break; | |
| 13986 | ||
| 65f38f15 | 13987 | if ((info->shared |
| 4e795f50 | 13988 | && (h == NULL |
| 039b3fef AM |
13989 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
| 13990 | || h->elf.root.type != bfd_link_hash_undefweak) | |
| 1d483afe | 13991 | && (must_be_dyn_reloc (info, r_type) |
| 039b3fef | 13992 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
| f4656909 AM |
13993 | || (ELIMINATE_COPY_RELOCS |
| 13994 | && !info->shared | |
| 65f38f15 | 13995 | && h != NULL |
| 039b3fef | 13996 | && h->elf.dynindx != -1 |
| f5385ebf | 13997 | && !h->elf.non_got_ref |
| 25f23106 AM |
13998 | && !h->elf.def_regular) |
| 13999 | || (!info->shared | |
| 14000 | && (h != NULL | |
| 14001 | ? h->elf.type == STT_GNU_IFUNC | |
| 14002 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
| 65f38f15 | 14003 | { |
| b34976b6 | 14004 | bfd_boolean skip, relocate; |
| 65f38f15 | 14005 | asection *sreloc; |
| 1cf1f670 | 14006 | bfd_vma out_off; |
| 65f38f15 AM |
14007 | |
| 14008 | /* When generating a dynamic object, these relocations | |
| 14009 | are copied into the output file to be resolved at run | |
| 14010 | time. */ | |
| 14011 | ||
| b34976b6 AM |
14012 | skip = FALSE; |
| 14013 | relocate = FALSE; | |
| 65f38f15 | 14014 | |
| 1cf1f670 AM |
14015 | out_off = _bfd_elf_section_offset (output_bfd, info, |
| 14016 | input_section, rel->r_offset); | |
| 14017 | if (out_off == (bfd_vma) -1) | |
| b34976b6 | 14018 | skip = TRUE; |
| 1cf1f670 | 14019 | else if (out_off == (bfd_vma) -2) |
| b34976b6 | 14020 | skip = TRUE, relocate = TRUE; |
| 1cf1f670 AM |
14021 | out_off += (input_section->output_section->vma |
| 14022 | + input_section->output_offset); | |
| 14023 | outrel.r_offset = out_off; | |
| 411e1bfb | 14024 | outrel.r_addend = rel->r_addend; |
| 65f38f15 | 14025 | |
| 1cf1f670 AM |
14026 | /* Optimize unaligned reloc use. */ |
| 14027 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
| 14028 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
| 14029 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
| 14030 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
| 14031 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
| 14032 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
| 14033 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
| 14034 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
| 14035 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
| 14036 | ||
| 65f38f15 | 14037 | if (skip) |
| 0bb2d96a | 14038 | memset (&outrel, 0, sizeof outrel); |
| 726d3ab0 | 14039 | else if (!SYMBOL_CALLS_LOCAL (info, &h->elf) |
| 0b13192e AM |
14040 | && !is_opd |
| 14041 | && r_type != R_PPC64_TOC) | |
| 14acf4dc MR |
14042 | { |
| 14043 | BFD_ASSERT (h->elf.dynindx != -1); | |
| 14044 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
| 14045 | } | |
| 65f38f15 AM |
14046 | else |
| 14047 | { | |
| 41bd81ab AM |
14048 | /* This symbol is local, or marked to become local, |
| 14049 | or this is an opd section reloc which must point | |
| 14050 | at a local function. */ | |
| 65f38f15 | 14051 | outrel.r_addend += relocation; |
| e86ce104 | 14052 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
| 65f38f15 | 14053 | { |
| 3fad3c7c | 14054 | if (is_opd && h != NULL) |
| afbe61cf AM |
14055 | { |
| 14056 | /* Lie about opd entries. This case occurs | |
| 14057 | when building shared libraries and we | |
| 14058 | reference a function in another shared | |
| 3fad3c7c AM |
14059 | lib. The same thing happens for a weak |
| 14060 | definition in an application that's | |
| 14061 | overridden by a strong definition in a | |
| 14062 | shared lib. (I believe this is a generic | |
| 14063 | bug in binutils handling of weak syms.) | |
| 14064 | In these cases we won't use the opd | |
| 1e2f5b6e | 14065 | entry in this lib. */ |
| b34976b6 | 14066 | unresolved_reloc = FALSE; |
| afbe61cf | 14067 | } |
| 25f23106 AM |
14068 | if (!is_opd |
| 14069 | && r_type == R_PPC64_ADDR64 | |
| 14070 | && (h != NULL | |
| 14071 | ? h->elf.type == STT_GNU_IFUNC | |
| 14072 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
| 14073 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 14074 | else | |
| 14075 | { | |
| 14076 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 | 14077 | |
| 25f23106 AM |
14078 | /* We need to relocate .opd contents for ld.so. |
| 14079 | Prelink also wants simple and consistent rules | |
| 14080 | for relocs. This make all RELATIVE relocs have | |
| 14081 | *r_offset equal to r_addend. */ | |
| 14082 | relocate = TRUE; | |
| 14083 | } | |
| 65f38f15 AM |
14084 | } |
| 14085 | else | |
| 14086 | { | |
| 14087 | long indx = 0; | |
| 14088 | ||
| 25f23106 AM |
14089 | if (h != NULL |
| 14090 | ? h->elf.type == STT_GNU_IFUNC | |
| 14091 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 14092 | { | |
| 25f53a85 | 14093 | info->callbacks->einfo |
| bc30df16 AM |
14094 | (_("%P: %H: %s for indirect " |
| 14095 | "function `%T' unsupported\n"), | |
| 25f53a85 | 14096 | input_bfd, input_section, rel->r_offset, |
| 25f23106 AM |
14097 | ppc64_elf_howto_table[r_type]->name, |
| 14098 | sym_name); | |
| 14099 | ret = FALSE; | |
| 14100 | } | |
| cf35638d | 14101 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
| 65f38f15 AM |
14102 | ; |
| 14103 | else if (sec == NULL || sec->owner == NULL) | |
| 14104 | { | |
| 14105 | bfd_set_error (bfd_error_bad_value); | |
| b34976b6 | 14106 | return FALSE; |
| 65f38f15 AM |
14107 | } |
| 14108 | else | |
| 14109 | { | |
| 14110 | asection *osec; | |
| 14111 | ||
| 14112 | osec = sec->output_section; | |
| 14113 | indx = elf_section_data (osec)->dynindx; | |
| 14114 | ||
| 74541ad4 AM |
14115 | if (indx == 0) |
| 14116 | { | |
| 14117 | if ((osec->flags & SEC_READONLY) == 0 | |
| 14118 | && htab->elf.data_index_section != NULL) | |
| 14119 | osec = htab->elf.data_index_section; | |
| 14120 | else | |
| 14121 | osec = htab->elf.text_index_section; | |
| 14122 | indx = elf_section_data (osec)->dynindx; | |
| 14123 | } | |
| 14124 | BFD_ASSERT (indx != 0); | |
| 14125 | ||
| 65f38f15 AM |
14126 | /* We are turning this relocation into one |
| 14127 | against a section symbol, so subtract out | |
| 14128 | the output section's address but not the | |
| 14129 | offset of the input section in the output | |
| 14130 | section. */ | |
| 14131 | outrel.r_addend -= osec->vma; | |
| 14132 | } | |
| 14133 | ||
| 14134 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
| 14135 | } | |
| 14136 | } | |
| 14137 | ||
| 14138 | sreloc = elf_section_data (input_section)->sreloc; | |
| 19e08130 AM |
14139 | if (h != NULL |
| 14140 | ? h->elf.type == STT_GNU_IFUNC | |
| 14141 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 25f23106 | 14142 | sreloc = htab->reliplt; |
| 65f38f15 AM |
14143 | if (sreloc == NULL) |
| 14144 | abort (); | |
| 14145 | ||
| dfbb6ac9 AM |
14146 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
| 14147 | >= sreloc->size) | |
| 14148 | abort (); | |
| 947216bf AM |
14149 | loc = sreloc->contents; |
| 14150 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 AM |
14151 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
| 14152 | ||
| 14153 | /* If this reloc is against an external symbol, it will | |
| 14154 | be computed at runtime, so there's no need to do | |
| 81407a69 AM |
14155 | anything now. However, for the sake of prelink ensure |
| 14156 | that the section contents are a known value. */ | |
| 65f38f15 | 14157 | if (! relocate) |
| 81407a69 AM |
14158 | { |
| 14159 | unresolved_reloc = FALSE; | |
| 14160 | /* The value chosen here is quite arbitrary as ld.so | |
| 14161 | ignores section contents except for the special | |
| 14162 | case of .opd where the contents might be accessed | |
| 14163 | before relocation. Choose zero, as that won't | |
| 14164 | cause reloc overflow. */ | |
| 14165 | relocation = 0; | |
| 14166 | addend = 0; | |
| 14167 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
| 14168 | to improve backward compatibility with older | |
| 14169 | versions of ld. */ | |
| 14170 | if (r_type == R_PPC64_ADDR64) | |
| 14171 | addend = outrel.r_addend; | |
| 14172 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
| 4ce794b7 | 14173 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
| 000732f7 AM |
14174 | addend = (input_section->output_section->vma |
| 14175 | + input_section->output_offset | |
| 14176 | + rel->r_offset); | |
| 81407a69 | 14177 | } |
| 65f38f15 | 14178 | } |
| 5bd4f169 AM |
14179 | break; |
| 14180 | ||
| 65f38f15 AM |
14181 | case R_PPC64_COPY: |
| 14182 | case R_PPC64_GLOB_DAT: | |
| 14183 | case R_PPC64_JMP_SLOT: | |
| 25f23106 | 14184 | case R_PPC64_JMP_IREL: |
| 65f38f15 AM |
14185 | case R_PPC64_RELATIVE: |
| 14186 | /* We shouldn't ever see these dynamic relocs in relocatable | |
| 14187 | files. */ | |
| ae9a127f | 14188 | /* Fall through. */ |
| 65f38f15 AM |
14189 | |
| 14190 | case R_PPC64_PLTGOT16: | |
| 14191 | case R_PPC64_PLTGOT16_DS: | |
| 14192 | case R_PPC64_PLTGOT16_HA: | |
| 14193 | case R_PPC64_PLTGOT16_HI: | |
| 14194 | case R_PPC64_PLTGOT16_LO: | |
| 14195 | case R_PPC64_PLTGOT16_LO_DS: | |
| 14196 | case R_PPC64_PLTREL32: | |
| 14197 | case R_PPC64_PLTREL64: | |
| 14198 | /* These ones haven't been implemented yet. */ | |
| 14199 | ||
| 25f53a85 | 14200 | info->callbacks->einfo |
| bc30df16 | 14201 | (_("%P: %B: %s is not supported for `%T'\n"), |
| d003868e | 14202 | input_bfd, |
| 4ce794b7 | 14203 | ppc64_elf_howto_table[r_type]->name, sym_name); |
| 5bd4f169 AM |
14204 | |
| 14205 | bfd_set_error (bfd_error_invalid_operation); | |
| b34976b6 | 14206 | ret = FALSE; |
| 5bd4f169 | 14207 | continue; |
| 65f38f15 | 14208 | } |
| 5bd4f169 | 14209 | |
| 67f0cbdb AM |
14210 | /* Multi-instruction sequences that access the TOC can be |
| 14211 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
| 14212 | to nop; addi rb,r2,x; */ | |
| 14213 | switch (r_type) | |
| 14214 | { | |
| 14215 | default: | |
| 14216 | break; | |
| 14217 | ||
| 14218 | case R_PPC64_GOT_TLSLD16_HI: | |
| 14219 | case R_PPC64_GOT_TLSGD16_HI: | |
| 14220 | case R_PPC64_GOT_TPREL16_HI: | |
| 14221 | case R_PPC64_GOT_DTPREL16_HI: | |
| 14222 | case R_PPC64_GOT16_HI: | |
| 14223 | case R_PPC64_TOC16_HI: | |
| 14224 | /* These relocs would only be useful if building up an | |
| 14225 | offset to later add to r2, perhaps in an indexed | |
| 14226 | addressing mode instruction. Don't try to optimize. | |
| 14227 | Unfortunately, the possibility of someone building up an | |
| 14228 | offset like this or even with the HA relocs, means that | |
| 14229 | we need to check the high insn when optimizing the low | |
| 14230 | insn. */ | |
| 14231 | break; | |
| 14232 | ||
| 14233 | case R_PPC64_GOT_TLSLD16_HA: | |
| 14234 | case R_PPC64_GOT_TLSGD16_HA: | |
| 14235 | case R_PPC64_GOT_TPREL16_HA: | |
| 14236 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14237 | case R_PPC64_GOT16_HA: | |
| 14238 | case R_PPC64_TOC16_HA: | |
| 98528052 | 14239 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 14240 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 98528052 AM |
14241 | { |
| 14242 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 14243 | bfd_put_32 (input_bfd, NOP, p); | |
| 14244 | } | |
| 67f0cbdb AM |
14245 | break; |
| 14246 | ||
| 14247 | case R_PPC64_GOT_TLSLD16_LO: | |
| 14248 | case R_PPC64_GOT_TLSGD16_LO: | |
| 14249 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14250 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14251 | case R_PPC64_GOT16_LO: | |
| 14252 | case R_PPC64_GOT16_LO_DS: | |
| 14253 | case R_PPC64_TOC16_LO: | |
| 14254 | case R_PPC64_TOC16_LO_DS: | |
| 98528052 | 14255 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 14256 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 67f0cbdb AM |
14257 | { |
| 14258 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 14259 | insn = bfd_get_32 (input_bfd, p); | |
| 560c8763 AM |
14260 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
| 14261 | { | |
| 14262 | /* Transform addic to addi when we change reg. */ | |
| 14263 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
| 14264 | insn |= (14u << 26) | (2 << 16); | |
| 14265 | } | |
| 14266 | else | |
| 67f0cbdb | 14267 | { |
| 98528052 AM |
14268 | insn &= ~(0x1f << 16); |
| 14269 | insn |= 2 << 16; | |
| 67f0cbdb | 14270 | } |
| 560c8763 | 14271 | bfd_put_32 (input_bfd, insn, p); |
| 67f0cbdb AM |
14272 | } |
| 14273 | break; | |
| 14274 | } | |
| 14275 | ||
| 65f38f15 AM |
14276 | /* Do any further special processing. */ |
| 14277 | switch (r_type) | |
| 14278 | { | |
| 14279 | default: | |
| 14280 | break; | |
| 14281 | ||
| 25f23106 | 14282 | case R_PPC64_REL16_HA: |
| f9c6b907 AM |
14283 | case R_PPC64_ADDR16_HA: |
| 14284 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
14285 | case R_PPC64_ADDR16_HIGHERA: |
| 14286 | case R_PPC64_ADDR16_HIGHESTA: | |
| 65f38f15 AM |
14287 | case R_PPC64_TOC16_HA: |
| 14288 | case R_PPC64_SECTOFF_HA: | |
| 411e1bfb | 14289 | case R_PPC64_TPREL16_HA: |
| f9c6b907 | 14290 | case R_PPC64_TPREL16_HIGHA: |
| 411e1bfb | 14291 | case R_PPC64_TPREL16_HIGHERA: |
| 411e1bfb | 14292 | case R_PPC64_TPREL16_HIGHESTA: |
| f9c6b907 AM |
14293 | case R_PPC64_DTPREL16_HA: |
| 14294 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb | 14295 | case R_PPC64_DTPREL16_HIGHERA: |
| 411e1bfb | 14296 | case R_PPC64_DTPREL16_HIGHESTA: |
| 65f38f15 AM |
14297 | /* It's just possible that this symbol is a weak symbol |
| 14298 | that's not actually defined anywhere. In that case, | |
| 14299 | 'sec' would be NULL, and we should leave the symbol | |
| 14300 | alone (it will be set to zero elsewhere in the link). */ | |
| 5c5f6e17 AM |
14301 | if (sec == NULL) |
| 14302 | break; | |
| 14303 | /* Fall thru */ | |
| 14304 | ||
| 14305 | case R_PPC64_GOT16_HA: | |
| 14306 | case R_PPC64_PLTGOT16_HA: | |
| 14307 | case R_PPC64_PLT16_HA: | |
| 14308 | case R_PPC64_GOT_TLSGD16_HA: | |
| 14309 | case R_PPC64_GOT_TLSLD16_HA: | |
| 14310 | case R_PPC64_GOT_TPREL16_HA: | |
| 14311 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14312 | /* Add 0x10000 if sign bit in 0:15 is set. | |
| 14313 | Bits 0:15 are not used. */ | |
| 14314 | addend += 0x8000; | |
| 65f38f15 AM |
14315 | break; |
| 14316 | ||
| 14317 | case R_PPC64_ADDR16_DS: | |
| 14318 | case R_PPC64_ADDR16_LO_DS: | |
| 14319 | case R_PPC64_GOT16_DS: | |
| 14320 | case R_PPC64_GOT16_LO_DS: | |
| 14321 | case R_PPC64_PLT16_LO_DS: | |
| 14322 | case R_PPC64_SECTOFF_DS: | |
| 14323 | case R_PPC64_SECTOFF_LO_DS: | |
| 14324 | case R_PPC64_TOC16_DS: | |
| 14325 | case R_PPC64_TOC16_LO_DS: | |
| 14326 | case R_PPC64_PLTGOT16_DS: | |
| 14327 | case R_PPC64_PLTGOT16_LO_DS: | |
| 411e1bfb AM |
14328 | case R_PPC64_GOT_TPREL16_DS: |
| 14329 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14330 | case R_PPC64_GOT_DTPREL16_DS: | |
| 14331 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14332 | case R_PPC64_TPREL16_DS: | |
| 14333 | case R_PPC64_TPREL16_LO_DS: | |
| 14334 | case R_PPC64_DTPREL16_DS: | |
| 14335 | case R_PPC64_DTPREL16_LO_DS: | |
| adadcc0c AM |
14336 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
| 14337 | mask = 3; | |
| 14338 | /* If this reloc is against an lq insn, then the value must be | |
| 14339 | a multiple of 16. This is somewhat of a hack, but the | |
| 14340 | "correct" way to do this by defining _DQ forms of all the | |
| 14341 | _DS relocs bloats all reloc switches in this file. It | |
| 14342 | doesn't seem to make much sense to use any of these relocs | |
| 14343 | in data, so testing the insn should be safe. */ | |
| 494dac0c | 14344 | if ((insn & (0x3f << 26)) == (56u << 26)) |
| adadcc0c AM |
14345 | mask = 15; |
| 14346 | if (((relocation + addend) & mask) != 0) | |
| 65f38f15 | 14347 | { |
| 25f53a85 | 14348 | info->callbacks->einfo |
| 8de848d8 | 14349 | (_("%P: %H: error: %s not a multiple of %u\n"), |
| 25f53a85 | 14350 | input_bfd, input_section, rel->r_offset, |
| 4ce794b7 | 14351 | ppc64_elf_howto_table[r_type]->name, |
| adadcc0c | 14352 | mask + 1); |
| 65f38f15 | 14353 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 14354 | ret = FALSE; |
| 65f38f15 AM |
14355 | continue; |
| 14356 | } | |
| 14357 | break; | |
| 5bd4f169 AM |
14358 | } |
| 14359 | ||
| 239e1f3a AM |
14360 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 14361 | because such sections are not SEC_ALLOC and thus ld.so will | |
| 14362 | not process them. */ | |
| 65f38f15 | 14363 | if (unresolved_reloc |
| 239e1f3a | 14364 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 1d5316ab AM |
14365 | && h->elf.def_dynamic) |
| 14366 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
| 14367 | rel->r_offset) != (bfd_vma) -1) | |
| 9c07fe7c | 14368 | { |
| 25f53a85 | 14369 | info->callbacks->einfo |
| bc30df16 | 14370 | (_("%P: %H: unresolvable %s against `%T'\n"), |
| 25f53a85 | 14371 | input_bfd, input_section, rel->r_offset, |
| 7b609f53 | 14372 | ppc64_elf_howto_table[(int) r_type]->name, |
| 039b3fef | 14373 | h->elf.root.root.string); |
| b34976b6 | 14374 | ret = FALSE; |
| 9c07fe7c | 14375 | } |
| 5bd4f169 | 14376 | |
| 65f38f15 | 14377 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
| 5bd4f169 AM |
14378 | input_bfd, |
| 14379 | input_section, | |
| 14380 | contents, | |
| 411e1bfb | 14381 | rel->r_offset, |
| 5bd4f169 AM |
14382 | relocation, |
| 14383 | addend); | |
| 14384 | ||
| ef60b7ff | 14385 | if (r != bfd_reloc_ok) |
| 5bd4f169 | 14386 | { |
| bc30df16 AM |
14387 | char *more_info = NULL; |
| 14388 | const char *reloc_name = ppc64_elf_howto_table[r_type]->name; | |
| 14389 | ||
| 14390 | if (reloc_dest != DEST_NORMAL) | |
| 14391 | { | |
| 14392 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
| 14393 | if (more_info != NULL) | |
| 14394 | { | |
| 14395 | strcpy (more_info, reloc_name); | |
| 14396 | strcat (more_info, (reloc_dest == DEST_OPD | |
| 14397 | ? " (OPD)" : " (stub)")); | |
| 14398 | reloc_name = more_info; | |
| 14399 | } | |
| 14400 | } | |
| 14401 | ||
| cd27b276 | 14402 | if (r == bfd_reloc_overflow) |
| 5bd4f169 | 14403 | { |
| cd27b276 AM |
14404 | if (warned) |
| 14405 | continue; | |
| 14406 | if (h != NULL | |
| 039b3fef | 14407 | && h->elf.root.type == bfd_link_hash_undefweak |
| 4ce794b7 | 14408 | && ppc64_elf_howto_table[r_type]->pc_relative) |
| 5bd4f169 AM |
14409 | { |
| 14410 | /* Assume this is a call protected by other code that | |
| 14411 | detects the symbol is undefined. If this is the case, | |
| 14412 | we can safely ignore the overflow. If not, the | |
| 14413 | program is hosed anyway, and a little warning isn't | |
| 14414 | going to help. */ | |
| 14415 | ||
| 14416 | continue; | |
| 14417 | } | |
| 14418 | ||
| ef60b7ff | 14419 | if (!((*info->callbacks->reloc_overflow) |
| bc30df16 AM |
14420 | (info, &h->elf.root, sym_name, |
| 14421 | reloc_name, orig_rel.r_addend, | |
| 14422 | input_bfd, input_section, rel->r_offset))) | |
| b34976b6 | 14423 | return FALSE; |
| ef60b7ff AM |
14424 | } |
| 14425 | else | |
| 14426 | { | |
| 25f53a85 | 14427 | info->callbacks->einfo |
| bc30df16 | 14428 | (_("%P: %H: %s against `%T': error %d\n"), |
| 25f53a85 | 14429 | input_bfd, input_section, rel->r_offset, |
| bc30df16 | 14430 | reloc_name, sym_name, (int) r); |
| b34976b6 | 14431 | ret = FALSE; |
| ef60b7ff | 14432 | } |
| bc30df16 AM |
14433 | if (more_info != NULL) |
| 14434 | free (more_info); | |
| 5bd4f169 | 14435 | } |
| 5bd4f169 AM |
14436 | } |
| 14437 | ||
| 645ea6a9 AM |
14438 | /* If we're emitting relocations, then shortly after this function |
| 14439 | returns, reloc offsets and addends for this section will be | |
| 14440 | adjusted. Worse, reloc symbol indices will be for the output | |
| 8860955f AM |
14441 | file rather than the input. Save a copy of the relocs for |
| 14442 | opd_entry_value. */ | |
| 4cc603a5 | 14443 | if (is_opd && (info->emitrelocations || info->relocatable)) |
| 8860955f AM |
14444 | { |
| 14445 | bfd_size_type amt; | |
| 14446 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
| 14447 | rel = bfd_alloc (input_bfd, amt); | |
| 729eabd5 AM |
14448 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
| 14449 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
| 8860955f AM |
14450 | if (rel == NULL) |
| 14451 | return FALSE; | |
| 14452 | memcpy (rel, relocs, amt); | |
| 14453 | } | |
| 5bd4f169 AM |
14454 | return ret; |
| 14455 | } | |
| 14456 | ||
| 754021d0 AM |
14457 | /* Adjust the value of any local symbols in opd sections. */ |
| 14458 | ||
| 6e0b88f1 | 14459 | static int |
| 754021d0 AM |
14460 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
| 14461 | const char *name ATTRIBUTE_UNUSED, | |
| 14462 | Elf_Internal_Sym *elfsym, | |
| 14463 | asection *input_sec, | |
| 14464 | struct elf_link_hash_entry *h) | |
| 14465 | { | |
| 74f0fb50 AM |
14466 | struct _opd_sec_data *opd; |
| 14467 | long adjust; | |
| 754021d0 AM |
14468 | bfd_vma value; |
| 14469 | ||
| 4025353c | 14470 | if (h != NULL) |
| 6e0b88f1 | 14471 | return 1; |
| 4025353c | 14472 | |
| 74f0fb50 AM |
14473 | opd = get_opd_info (input_sec); |
| 14474 | if (opd == NULL || opd->adjust == NULL) | |
| 6e0b88f1 | 14475 | return 1; |
| 754021d0 AM |
14476 | |
| 14477 | value = elfsym->st_value - input_sec->output_offset; | |
| 14478 | if (!info->relocatable) | |
| 14479 | value -= input_sec->output_section->vma; | |
| 14480 | ||
| 74f0fb50 | 14481 | adjust = opd->adjust[value / 8]; |
| 4025353c | 14482 | if (adjust == -1) |
| 6e0b88f1 AM |
14483 | return 2; |
| 14484 | ||
| 14485 | elfsym->st_value += adjust; | |
| 14486 | return 1; | |
| 754021d0 AM |
14487 | } |
| 14488 | ||
| 5bd4f169 AM |
14489 | /* Finish up dynamic symbol handling. We set the contents of various |
| 14490 | dynamic sections here. */ | |
| 14491 | ||
| b34976b6 | 14492 | static bfd_boolean |
| 4ce794b7 AM |
14493 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 14494 | struct bfd_link_info *info, | |
| 14495 | struct elf_link_hash_entry *h, | |
| ab6dce23 | 14496 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
| 5bd4f169 | 14497 | { |
| 65f38f15 | 14498 | struct ppc_link_hash_table *htab; |
| 8387904d AM |
14499 | struct plt_entry *ent; |
| 14500 | Elf_Internal_Rela rela; | |
| 14501 | bfd_byte *loc; | |
| 5bd4f169 | 14502 | |
| 65f38f15 | 14503 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
14504 | if (htab == NULL) |
| 14505 | return FALSE; | |
| 5bd4f169 | 14506 | |
| 8387904d AM |
14507 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 14508 | if (ent->plt.offset != (bfd_vma) -1) | |
| 14509 | { | |
| 14510 | /* This symbol has an entry in the procedure linkage | |
| 14511 | table. Set it up. */ | |
| e054468f AM |
14512 | if (!htab->elf.dynamic_sections_created |
| 14513 | || h->dynindx == -1) | |
| 14514 | { | |
| 14515 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
| 14516 | && h->def_regular | |
| 14517 | && (h->root.type == bfd_link_hash_defined | |
| 14518 | || h->root.type == bfd_link_hash_defweak)); | |
| 25f23106 AM |
14519 | rela.r_offset = (htab->iplt->output_section->vma |
| 14520 | + htab->iplt->output_offset | |
| 14521 | + ent->plt.offset); | |
| ee67d69a AM |
14522 | if (htab->opd_abi) |
| 14523 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 14524 | else | |
| 14525 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
14526 | rela.r_addend = (h->root.u.def.value |
| 14527 | + h->root.u.def.section->output_offset | |
| 14528 | + h->root.u.def.section->output_section->vma | |
| 14529 | + ent->addend); | |
| 25f23106 AM |
14530 | loc = (htab->reliplt->contents |
| 14531 | + (htab->reliplt->reloc_count++ | |
| 14532 | * sizeof (Elf64_External_Rela))); | |
| e054468f AM |
14533 | } |
| 14534 | else | |
| 14535 | { | |
| 25f23106 AM |
14536 | rela.r_offset = (htab->plt->output_section->vma |
| 14537 | + htab->plt->output_offset | |
| 14538 | + ent->plt.offset); | |
| e054468f AM |
14539 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
| 14540 | rela.r_addend = ent->addend; | |
| 25f23106 | 14541 | loc = (htab->relplt->contents |
| b9e5796b AM |
14542 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
| 14543 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
| e054468f | 14544 | } |
| 8387904d AM |
14545 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 14546 | } | |
| 5bd4f169 | 14547 | |
| f5385ebf | 14548 | if (h->needs_copy) |
| 5bd4f169 | 14549 | { |
| 65f38f15 | 14550 | /* This symbol needs a copy reloc. Set it up. */ |
| 5bd4f169 | 14551 | |
| 65f38f15 AM |
14552 | if (h->dynindx == -1 |
| 14553 | || (h->root.type != bfd_link_hash_defined | |
| 14554 | && h->root.type != bfd_link_hash_defweak) | |
| 4ce794b7 | 14555 | || htab->relbss == NULL) |
| 65f38f15 | 14556 | abort (); |
| 5bd4f169 AM |
14557 | |
| 14558 | rela.r_offset = (h->root.u.def.value | |
| 14559 | + h->root.u.def.section->output_section->vma | |
| 14560 | + h->root.u.def.section->output_offset); | |
| 14561 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
| 14562 | rela.r_addend = 0; | |
| 4ce794b7 AM |
14563 | loc = htab->relbss->contents; |
| 14564 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 | 14565 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 5bd4f169 AM |
14566 | } |
| 14567 | ||
| b34976b6 | 14568 | return TRUE; |
| 5bd4f169 AM |
14569 | } |
| 14570 | ||
| 65f38f15 AM |
14571 | /* Used to decide how to sort relocs in an optimal manner for the |
| 14572 | dynamic linker, before writing them out. */ | |
| 14573 | ||
| 14574 | static enum elf_reloc_type_class | |
| 7e612e98 AM |
14575 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
| 14576 | const asection *rel_sec, | |
| 14577 | const Elf_Internal_Rela *rela) | |
| 65f38f15 | 14578 | { |
| 04c9666a | 14579 | enum elf_ppc64_reloc_type r_type; |
| 7e612e98 AM |
14580 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 14581 | ||
| 14582 | if (rel_sec == htab->reliplt) | |
| 14583 | return reloc_class_ifunc; | |
| a33d1f77 | 14584 | |
| 4ce794b7 | 14585 | r_type = ELF64_R_TYPE (rela->r_info); |
| a33d1f77 | 14586 | switch (r_type) |
| 65f38f15 AM |
14587 | { |
| 14588 | case R_PPC64_RELATIVE: | |
| 14589 | return reloc_class_relative; | |
| 14590 | case R_PPC64_JMP_SLOT: | |
| 14591 | return reloc_class_plt; | |
| 14592 | case R_PPC64_COPY: | |
| 14593 | return reloc_class_copy; | |
| 14594 | default: | |
| 14595 | return reloc_class_normal; | |
| 14596 | } | |
| 14597 | } | |
| 14598 | ||
| 5bd4f169 AM |
14599 | /* Finish up the dynamic sections. */ |
| 14600 | ||
| b34976b6 | 14601 | static bfd_boolean |
| 4ce794b7 AM |
14602 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
| 14603 | struct bfd_link_info *info) | |
| 5bd4f169 | 14604 | { |
| 65f38f15 AM |
14605 | struct ppc_link_hash_table *htab; |
| 14606 | bfd *dynobj; | |
| 5bd4f169 | 14607 | asection *sdyn; |
| 5bd4f169 | 14608 | |
| 65f38f15 | 14609 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
14610 | if (htab == NULL) |
| 14611 | return FALSE; | |
| 14612 | ||
| 65f38f15 | 14613 | dynobj = htab->elf.dynobj; |
| 3d4d4302 | 14614 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 5bd4f169 | 14615 | |
| 65f38f15 | 14616 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 14617 | { |
| 5bd4f169 AM |
14618 | Elf64_External_Dyn *dyncon, *dynconend; |
| 14619 | ||
| 4ce794b7 | 14620 | if (sdyn == NULL || htab->got == NULL) |
| 65f38f15 | 14621 | abort (); |
| 5bd4f169 AM |
14622 | |
| 14623 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
| eea6121a | 14624 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5bd4f169 AM |
14625 | for (; dyncon < dynconend; dyncon++) |
| 14626 | { | |
| 14627 | Elf_Internal_Dyn dyn; | |
| 19397422 | 14628 | asection *s; |
| 5bd4f169 AM |
14629 | |
| 14630 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
| 14631 | ||
| 14632 | switch (dyn.d_tag) | |
| 14633 | { | |
| 65f38f15 AM |
14634 | default: |
| 14635 | continue; | |
| 5bd4f169 | 14636 | |
| 5d1634d7 | 14637 | case DT_PPC64_GLINK: |
| 4ce794b7 | 14638 | s = htab->glink; |
| 6348e046 | 14639 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| ad8e1ba5 AM |
14640 | /* We stupidly defined DT_PPC64_GLINK to be the start |
| 14641 | of glink rather than the first entry point, which is | |
| 14642 | what ld.so needs, and now have a bigger stub to | |
| 14643 | support automatic multiple TOCs. */ | |
| b9e5796b | 14644 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
| 5d1634d7 AM |
14645 | break; |
| 14646 | ||
| 19397422 AM |
14647 | case DT_PPC64_OPD: |
| 14648 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
14649 | if (s == NULL) |
| 14650 | continue; | |
| 14651 | dyn.d_un.d_ptr = s->vma; | |
| 19397422 AM |
14652 | break; |
| 14653 | ||
| 14654 | case DT_PPC64_OPDSZ: | |
| 14655 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
14656 | if (s == NULL) |
| 14657 | continue; | |
| eea6121a | 14658 | dyn.d_un.d_val = s->size; |
| 19397422 AM |
14659 | break; |
| 14660 | ||
| 65f38f15 | 14661 | case DT_PLTGOT: |
| 4ce794b7 | 14662 | s = htab->plt; |
| 6348e046 | 14663 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 AM |
14664 | break; |
| 14665 | ||
| 14666 | case DT_JMPREL: | |
| 4ce794b7 | 14667 | s = htab->relplt; |
| 6348e046 | 14668 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 | 14669 | break; |
| 5bd4f169 | 14670 | |
| 65f38f15 | 14671 | case DT_PLTRELSZ: |
| eea6121a | 14672 | dyn.d_un.d_val = htab->relplt->size; |
| 5d1634d7 AM |
14673 | break; |
| 14674 | ||
| 14675 | case DT_RELASZ: | |
| 14676 | /* Don't count procedure linkage table relocs in the | |
| 14677 | overall reloc count. */ | |
| 4ce794b7 | 14678 | s = htab->relplt; |
| 6348e046 AM |
14679 | if (s == NULL) |
| 14680 | continue; | |
| eea6121a | 14681 | dyn.d_un.d_val -= s->size; |
| 6348e046 AM |
14682 | break; |
| 14683 | ||
| 14684 | case DT_RELA: | |
| 14685 | /* We may not be using the standard ELF linker script. | |
| 14686 | If .rela.plt is the first .rela section, we adjust | |
| 14687 | DT_RELA to not include it. */ | |
| 4ce794b7 | 14688 | s = htab->relplt; |
| 6348e046 AM |
14689 | if (s == NULL) |
| 14690 | continue; | |
| 14691 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
| 14692 | continue; | |
| eea6121a | 14693 | dyn.d_un.d_ptr += s->size; |
| 65f38f15 | 14694 | break; |
| 5bd4f169 | 14695 | } |
| 5bd4f169 | 14696 | |
| 65f38f15 | 14697 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5bd4f169 | 14698 | } |
| 5bd4f169 AM |
14699 | } |
| 14700 | ||
| eea6121a | 14701 | if (htab->got != NULL && htab->got->size != 0) |
| 5d1634d7 AM |
14702 | { |
| 14703 | /* Fill in the first entry in the global offset table. | |
| 14704 | We use it to hold the link-time TOCbase. */ | |
| 14705 | bfd_put_64 (output_bfd, | |
| 60ee0d4a | 14706 | elf_gp (output_bfd) + TOC_BASE_OFF, |
| 4ce794b7 | 14707 | htab->got->contents); |
| 5d1634d7 AM |
14708 | |
| 14709 | /* Set .got entry size. */ | |
| 4ce794b7 | 14710 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
| 5d1634d7 AM |
14711 | } |
| 14712 | ||
| eea6121a | 14713 | if (htab->plt != NULL && htab->plt->size != 0) |
| 5d1634d7 AM |
14714 | { |
| 14715 | /* Set .plt entry size. */ | |
| 4ce794b7 | 14716 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
| b9e5796b | 14717 | = PLT_ENTRY_SIZE (htab); |
| 5d1634d7 AM |
14718 | } |
| 14719 | ||
| 84f5d08e AM |
14720 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
| 14721 | brlt ourselves if emitrelocations. */ | |
| 14722 | if (htab->brlt != NULL | |
| 14723 | && htab->brlt->reloc_count != 0 | |
| 14724 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 14725 | htab->brlt, | |
| d4730f92 | 14726 | elf_section_data (htab->brlt)->rela.hdr, |
| 84f5d08e AM |
14727 | elf_section_data (htab->brlt)->relocs, |
| 14728 | NULL)) | |
| 14729 | return FALSE; | |
| 14730 | ||
| 176a0d42 AM |
14731 | if (htab->glink != NULL |
| 14732 | && htab->glink->reloc_count != 0 | |
| 14733 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 14734 | htab->glink, | |
| d4730f92 | 14735 | elf_section_data (htab->glink)->rela.hdr, |
| 176a0d42 AM |
14736 | elf_section_data (htab->glink)->relocs, |
| 14737 | NULL)) | |
| 14738 | return FALSE; | |
| 14739 | ||
| 58d180e8 AM |
14740 | |
| 14741 | if (htab->glink_eh_frame != NULL | |
| dbaa2011 | 14742 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
| 58d180e8 AM |
14743 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
| 14744 | htab->glink_eh_frame, | |
| 14745 | htab->glink_eh_frame->contents)) | |
| 14746 | return FALSE; | |
| 14747 | ||
| e717da7e | 14748 | /* We need to handle writing out multiple GOT sections ourselves, |
| 7b53ace3 AM |
14749 | since we didn't add them to DYNOBJ. We know dynobj is the first |
| 14750 | bfd. */ | |
| e717da7e AM |
14751 | while ((dynobj = dynobj->link_next) != NULL) |
| 14752 | { | |
| 14753 | asection *s; | |
| 7b53ace3 | 14754 | |
| 0c8d6e5c | 14755 | if (!is_ppc64_elf (dynobj)) |
| 7b53ace3 AM |
14756 | continue; |
| 14757 | ||
| e717da7e AM |
14758 | s = ppc64_elf_tdata (dynobj)->got; |
| 14759 | if (s != NULL | |
| eea6121a | 14760 | && s->size != 0 |
| e717da7e AM |
14761 | && s->output_section != bfd_abs_section_ptr |
| 14762 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 14763 | s->contents, s->output_offset, | |
| eea6121a | 14764 | s->size)) |
| e717da7e AM |
14765 | return FALSE; |
| 14766 | s = ppc64_elf_tdata (dynobj)->relgot; | |
| 14767 | if (s != NULL | |
| eea6121a | 14768 | && s->size != 0 |
| e717da7e AM |
14769 | && s->output_section != bfd_abs_section_ptr |
| 14770 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 14771 | s->contents, s->output_offset, | |
| eea6121a | 14772 | s->size)) |
| e717da7e AM |
14773 | return FALSE; |
| 14774 | } | |
| f6c52c13 | 14775 | |
| b34976b6 | 14776 | return TRUE; |
| 5bd4f169 AM |
14777 | } |
| 14778 | ||
| 5bd4f169 | 14779 | #include "elf64-target.h" |
| 7b8e7dad AM |
14780 | |
| 14781 | /* FreeBSD support */ | |
| 14782 | ||
| 14783 | #undef TARGET_LITTLE_SYM | |
| 14784 | #undef TARGET_LITTLE_NAME | |
| 14785 | ||
| 14786 | #undef TARGET_BIG_SYM | |
| 14787 | #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec | |
| 14788 | #undef TARGET_BIG_NAME | |
| 14789 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
| 14790 | ||
| 14791 | #undef ELF_OSABI | |
| 14792 | #define ELF_OSABI ELFOSABI_FREEBSD | |
| 14793 | ||
| 14794 | #undef elf64_bed | |
| 14795 | #define elf64_bed elf64_powerpc_fbsd_bed | |
| 14796 | ||
| 14797 | #include "elf64-target.h" | |
| 14798 |