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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
82704155 | 2 | Copyright (C) 1999-2019 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 5 | Largely rewritten by Alan Modra. |
5bd4f169 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
5bd4f169 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
5bd4f169 | 18 | |
4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
20 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 22 | |
cd123cb7 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 27 | |
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
5bd4f169 | 30 | #include "bfd.h" |
5bd4f169 AM |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
04c9666a | 34 | #include "elf/ppc64.h" |
5d1634d7 | 35 | #include "elf64-ppc.h" |
58d180e8 | 36 | #include "dwarf2.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
5663e321 AM |
54 | static bfd_reloc_status_type ppc64_elf_prefix_reloc |
55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 56 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 57 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 58 | static bfd_vma opd_entry_value |
aef36ac1 | 59 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 60 | |
6d00b590 | 61 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 62 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 63 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
64 | #define TARGET_BIG_NAME "elf64-powerpc" |
65 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 66 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
67 | #define ELF_MACHINE_CODE EM_PPC64 |
68 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
69 | #define ELF_COMMONPAGESIZE 0x1000 |
70 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
71 | #define elf_info_to_howto ppc64_elf_info_to_howto |
72 | ||
73 | #define elf_backend_want_got_sym 0 | |
74 | #define elf_backend_want_plt_sym 0 | |
75 | #define elf_backend_plt_alignment 3 | |
76 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 77 | #define elf_backend_got_header_size 8 |
5474d94f | 78 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
79 | #define elf_backend_can_gc_sections 1 |
80 | #define elf_backend_can_refcount 1 | |
81 | #define elf_backend_rela_normal 1 | |
64f52338 | 82 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 83 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 84 | |
e717da7e | 85 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 86 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 87 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
88 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
89 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
90 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
91 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 92 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 93 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 94 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
95 | |
96 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
97 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
98 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 99 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 100 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 101 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 102 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 103 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 104 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 105 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 106 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 107 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 108 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 109 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 110 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
111 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
112 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 113 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
114 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
115 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 116 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 117 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 118 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
119 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
120 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
121 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
122 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 123 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 124 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 125 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 126 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 127 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 128 | |
5bd4f169 AM |
129 | /* The name of the dynamic interpreter. This is put in the .interp |
130 | section. */ | |
131 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
132 | ||
133 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 134 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 135 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
136 | |
137 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 138 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 139 | |
a078d95a AM |
140 | /* Offsets to some stack save slots. */ |
141 | #define STK_LR 16 | |
142 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 143 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
144 | CR save slot. Used only by optimised __tls_get_addr call stub, |
145 | relying on __tls_get_addr_opt not saving CR.. */ | |
146 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
147 | ||
5bd4f169 | 148 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 149 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
150 | /* TOC base alignment. */ |
151 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
152 | |
153 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
154 | #define TP_OFFSET 0x7000 | |
155 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 156 | |
ad8e1ba5 AM |
157 | /* .plt call stub instructions. The normal stub is like this, but |
158 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 159 | insert an addi to adjust r11. */ |
a078d95a | 160 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
161 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
162 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
163 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
164 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
165 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
166 | #define BCTR 0x4e800420 /* bctr */ |
167 | ||
07d6d2b8 | 168 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
169 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
170 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
171 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
172 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
173 | ||
174 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
175 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
176 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
177 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
178 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
179 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
180 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 181 | |
71a39c98 | 182 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 183 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 184 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 185 | |
07d6d2b8 AM |
186 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
187 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
188 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 189 | |
04bdff6a | 190 | #define LI_R11_0 0x39600000 /* li %r11,0 */ |
07d6d2b8 | 191 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
04bdff6a | 192 | #define LIS_R11 0x3d600000 /* lis %r11,xxx@ha */ |
05d0e962 | 193 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
194 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
195 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 196 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 197 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 | 198 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
04bdff6a | 199 | #define ORI_R11_R11_0 0x616b0000 /* ori %r11,%r11,xxx@l */ |
05d0e962 | 200 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ |
07d6d2b8 | 201 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
04bdff6a | 202 | #define SLDI_R11_R11_34 0x796b1746 /* sldi %r11,%r11,34 */ |
05d0e962 AM |
203 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
204 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
205 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
04bdff6a AM |
206 | #define PADDI_R12_PC 0x0610000039800000ULL |
207 | #define PLD_R12_PC 0x04100000e5800000ULL | |
5663e321 | 208 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 209 | |
9e390558 AM |
210 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
211 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 212 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
213 | /* 0: */ |
214 | /* .quad plt0-1f */ | |
215 | /* __glink: */ | |
216 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
217 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
218 | /* 1: */ | |
219 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 220 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 221 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
222 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
223 | /* ld %12,0(%11) */ | |
224 | /* ld %2,8(%11) */ | |
225 | /* mtctr %12 */ | |
226 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 227 | /* bctr */ |
b9e5796b AM |
228 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
229 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
230 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
231 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
232 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
233 | |
234 | /* Pad with this. */ | |
235 | #define NOP 0x60000000 | |
236 | ||
721956f4 AM |
237 | /* Some other nops. */ |
238 | #define CROR_151515 0x4def7b82 | |
239 | #define CROR_313131 0x4ffffb82 | |
240 | ||
cedb70c5 | 241 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
242 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
243 | #define B_DOT 0x48000000 /* b . */ | |
244 | ||
245 | /* After that, we need two instructions to load the index, followed by | |
246 | a branch. */ | |
247 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 248 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 249 | |
deb0e272 AM |
250 | /* Instructions used by the save and restore reg functions. */ |
251 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
252 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
253 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
254 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
255 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
256 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
257 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
258 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
259 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
260 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
261 | #define BLR 0x4e800020 /* blr */ |
262 | ||
41bd81ab AM |
263 | /* Since .opd is an array of descriptors and each entry will end up |
264 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
265 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 266 | relocate .opd without reloc entries. */ |
41bd81ab AM |
267 | #ifndef NO_OPD_RELOCS |
268 | #define NO_OPD_RELOCS 0 | |
269 | #endif | |
810d4e75 | 270 | |
a4b6fadd AM |
271 | #ifndef ARRAY_SIZE |
272 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
273 | #endif | |
274 | ||
810d4e75 AM |
275 | static inline int |
276 | abiversion (bfd *abfd) | |
277 | { | |
278 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
279 | } | |
280 | ||
281 | static inline void | |
282 | set_abiversion (bfd *abfd, int ver) | |
283 | { | |
284 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
285 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
286 | } | |
5bd4f169 AM |
287 | \f |
288 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
289 | /* Like other ELF RELA targets that don't apply multiple |
290 | field-altering relocations to the same localation, src_mask is | |
291 | always zero and pcrel_offset is the same as pc_relative. | |
292 | PowerPC can always use a zero bitpos, even when the field is not at | |
293 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
294 | and bitpos=2 which matches the ABI description, or as we do here, | |
295 | rightshift=0, bitsize=26 and bitpos=0. */ | |
296 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
297 | complain, special_func) \ | |
298 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
299 | complain_overflow_ ## complain, special_func, \ | |
300 | #type, FALSE, 0, mask, pc_relative) | |
301 | ||
04c9666a | 302 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 303 | |
f3185997 NC |
304 | static reloc_howto_type ppc64_elf_howto_raw[] = |
305 | { | |
5bd4f169 | 306 | /* This reloc does nothing. */ |
46807bf4 AM |
307 | HOW (R_PPC64_NONE, 3, 0, 0, 0, FALSE, dont, |
308 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
309 | |
310 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
311 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
312 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
313 | |
314 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
315 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
316 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, FALSE, bitfield, |
317 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
318 | |
319 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
320 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
321 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
322 | |
323 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
324 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
325 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
326 | |
327 | /* Bits 16-31 of an address. */ | |
46807bf4 AM |
328 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
329 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
330 | |
331 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
332 | bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
333 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
334 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
335 | |
336 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
337 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
338 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, FALSE, signed, |
339 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
340 | |
341 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
342 | indicate that the branch is expected to be taken. The lower two | |
343 | bits must be zero. */ | |
46807bf4 AM |
344 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
345 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
346 | |
347 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
348 | indicate that the branch is not expected to be taken. The lower | |
349 | two bits must be zero. */ | |
46807bf4 AM |
350 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
351 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
352 | |
353 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
46807bf4 AM |
354 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, TRUE, signed, |
355 | ppc64_elf_branch_reloc), | |
5bd4f169 | 356 | |
05d0e962 | 357 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
46807bf4 AM |
358 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, TRUE, signed, |
359 | ppc64_elf_branch_reloc), | |
05d0e962 | 360 | |
5bd4f169 | 361 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
362 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, TRUE, signed, |
363 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
364 | |
365 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
366 | the branch is expected to be taken. The lower two bits must be | |
367 | zero. */ | |
46807bf4 AM |
368 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
369 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
370 | |
371 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
372 | the branch is not expected to be taken. The lower two bits must | |
373 | be zero. */ | |
46807bf4 AM |
374 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
375 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
376 | |
377 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
378 | symbol. */ | |
46807bf4 AM |
379 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
380 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
381 | |
382 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
383 | the symbol. */ | |
46807bf4 AM |
384 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
385 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
386 | |
387 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
388 | the symbol. */ | |
46807bf4 AM |
389 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
390 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
391 | |
392 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
393 | the symbol. */ | |
46807bf4 AM |
394 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
395 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
396 | |
397 | /* This is used only by the dynamic linker. The symbol should exist | |
398 | both in the object being run and in some shared library. The | |
399 | dynamic linker copies the data addressed by the symbol from the | |
400 | shared library into the object, because the object being | |
401 | run has to have the data at some particular address. */ | |
46807bf4 AM |
402 | HOW (R_PPC64_COPY, 0, 0, 0, 0, FALSE, dont, |
403 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
404 | |
405 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
406 | entries. */ | |
46807bf4 AM |
407 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
408 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
409 | |
410 | /* Created by the link editor. Marks a procedure linkage table | |
411 | entry for a symbol. */ | |
46807bf4 AM |
412 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, FALSE, dont, |
413 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
414 | |
415 | /* Used only by the dynamic linker. When the object is run, this | |
416 | doubleword64 is set to the load address of the object, plus the | |
417 | addend. */ | |
46807bf4 AM |
418 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
419 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
420 | |
421 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
422 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
423 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
424 | |
425 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
426 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
427 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
428 | |
429 | /* 32-bit PC relative. */ | |
46807bf4 AM |
430 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
431 | bfd_elf_generic_reloc), | |
5bd4f169 | 432 | |
10ed1bba | 433 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
434 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
435 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
436 | |
437 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
438 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
46807bf4 AM |
439 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
440 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
441 | |
442 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
443 | the symbol. */ | |
46807bf4 AM |
444 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
445 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
446 | |
447 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
448 | the symbol. */ | |
46807bf4 AM |
449 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
450 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
451 | |
452 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
453 | the symbol. */ | |
46807bf4 AM |
454 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
455 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 456 | |
c061c2d8 | 457 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
458 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
459 | ppc64_elf_sectoff_reloc), | |
5bd4f169 | 460 | |
c061c2d8 | 461 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
46807bf4 AM |
462 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
463 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
464 | |
465 | /* 16-bit upper half section relative relocation. */ | |
46807bf4 AM |
466 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, signed, |
467 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
468 | |
469 | /* 16-bit upper half adjusted section relative relocation. */ | |
46807bf4 AM |
470 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, signed, |
471 | ppc64_elf_sectoff_ha_reloc), | |
5bd4f169 | 472 | |
04c9666a | 473 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
46807bf4 AM |
474 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, TRUE, dont, |
475 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
476 | |
477 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
478 | ||
479 | /* A standard 64-bit relocation. */ | |
46807bf4 AM |
480 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
481 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
482 | |
483 | /* The bits 32-47 of an address. */ | |
46807bf4 AM |
484 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
485 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
486 | |
487 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
488 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
489 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
490 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
491 | |
492 | /* The bits 48-63 of an address. */ | |
46807bf4 AM |
493 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
494 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
495 | |
496 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
497 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
498 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
499 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
500 | |
501 | /* Like ADDR64, but may be unaligned. */ | |
46807bf4 AM |
502 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
503 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
504 | |
505 | /* 64-bit relative relocation. */ | |
46807bf4 AM |
506 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
507 | bfd_elf_generic_reloc), | |
5bd4f169 | 508 | |
cedb70c5 | 509 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
510 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
511 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
512 | |
513 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
514 | table. */ | |
515 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
46807bf4 AM |
516 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
517 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
518 | |
519 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 520 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
46807bf4 AM |
521 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
522 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
523 | |
524 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 525 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
46807bf4 AM |
526 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
527 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
528 | |
529 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 530 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
46807bf4 AM |
531 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
532 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
533 | |
534 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
535 | contents of the low 16 bits, treated as a signed number, is | |
536 | negative. */ | |
5bd4f169 | 537 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
46807bf4 AM |
538 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
539 | ppc64_elf_toc_ha_reloc), | |
5bd4f169 AM |
540 | |
541 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 542 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
46807bf4 AM |
543 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
544 | ppc64_elf_toc64_reloc), | |
5bd4f169 AM |
545 | |
546 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
547 | value to relocate may (!) refer to a PLT entry which the link | |
548 | editor (a) may replace with the symbol value. If the link editor | |
549 | is unable to fully resolve the symbol, it may (b) create a PLT | |
550 | entry and store the address to the new PLT entry in the GOT. | |
551 | This permits lazy resolution of function symbols at run time. | |
552 | The link editor may also skip all of this and just (c) emit a | |
553 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
554 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
46807bf4 AM |
555 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, FALSE,signed, |
556 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
557 | |
558 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
559 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
560 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
561 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
562 | |
563 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
564 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
46807bf4 AM |
565 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
566 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
567 | |
568 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
569 | 1 if the contents of the low 16 bits, treated as a signed number, | |
570 | is negative. */ | |
571 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
46807bf4 AM |
572 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
573 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
574 | |
575 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
46807bf4 AM |
576 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
577 | bfd_elf_generic_reloc), | |
411e1bfb AM |
578 | |
579 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
580 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
581 | bfd_elf_generic_reloc), | |
411e1bfb AM |
582 | |
583 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
46807bf4 AM |
584 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
585 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
586 | |
587 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
588 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
589 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
590 | |
591 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
592 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
593 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
594 | |
595 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
46807bf4 AM |
596 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
597 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
598 | |
599 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
600 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
601 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
602 | |
603 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
46807bf4 AM |
604 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
605 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
606 | |
607 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
608 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
609 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
610 | |
611 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
612 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
46807bf4 AM |
613 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
614 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
615 | |
616 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
617 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
618 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
619 | ppc64_elf_unhandled_reloc), | |
411e1bfb | 620 | |
727fc41e | 621 | /* Marker relocs for TLS. */ |
46807bf4 AM |
622 | HOW (R_PPC64_TLS, 2, 32, 0, 0, FALSE, dont, |
623 | bfd_elf_generic_reloc), | |
624 | ||
625 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
626 | bfd_elf_generic_reloc), | |
627 | ||
628 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
629 | bfd_elf_generic_reloc), | |
727fc41e | 630 | |
23cedd1d AM |
631 | /* Marker reloc for optimizing r2 save in prologue rather than on |
632 | each plt call stub. */ | |
46807bf4 AM |
633 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, FALSE, dont, |
634 | bfd_elf_generic_reloc), | |
3b421ab3 | 635 | |
23cedd1d | 636 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
637 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
638 | bfd_elf_generic_reloc), | |
639 | ||
640 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
641 | bfd_elf_generic_reloc), | |
23cedd1d | 642 | |
411e1bfb AM |
643 | /* Computes the load module index of the load module that contains the |
644 | definition of its TLS sym. */ | |
46807bf4 AM |
645 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
646 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
647 | |
648 | /* Computes a dtv-relative displacement, the difference between the value | |
649 | of sym+add and the base address of the thread-local storage block that | |
650 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
651 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
652 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
653 | |
654 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
655 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
656 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
657 | |
658 | /* Like DTPREL16, but no overflow. */ | |
46807bf4 AM |
659 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
660 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
661 | |
662 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
663 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
664 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
665 | |
666 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
667 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
668 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
669 | |
670 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
671 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
672 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
673 | |
674 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
675 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
676 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
677 | |
678 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
679 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
680 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
681 | |
682 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
683 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
684 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
685 | |
686 | /* Like DTPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
687 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
688 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
689 | |
690 | /* Like DTPREL16_DS, but no overflow. */ | |
46807bf4 AM |
691 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
692 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
693 | |
694 | /* Computes a tp-relative displacement, the difference between the value of | |
695 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
696 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
697 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
698 | |
699 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
700 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
701 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
702 | |
703 | /* Like TPREL16, but no overflow. */ | |
46807bf4 AM |
704 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
705 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
706 | |
707 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
708 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
709 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
710 | |
711 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
712 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
713 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
714 | |
715 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
716 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
717 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
718 | |
719 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
720 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
721 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
722 | |
723 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
724 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
725 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
726 | |
727 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
728 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
729 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
730 | |
731 | /* Like TPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
732 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
733 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
734 | |
735 | /* Like TPREL16_DS, but no overflow. */ | |
46807bf4 AM |
736 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
737 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
738 | |
739 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
740 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
741 | to the first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
742 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
743 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 744 | |
411e1bfb | 745 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
746 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
747 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 748 | |
411e1bfb | 749 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
750 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
751 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 752 | |
411e1bfb | 753 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
754 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
755 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 756 | |
411e1bfb AM |
757 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
758 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
759 | first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
760 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
761 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 762 | |
411e1bfb | 763 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
764 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
765 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 766 | |
411e1bfb | 767 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
768 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
769 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 770 | |
411e1bfb | 771 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
772 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
773 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 774 | |
411e1bfb AM |
775 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
776 | the offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
777 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
778 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 779 | |
411e1bfb | 780 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
46807bf4 AM |
781 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
782 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 783 | |
411e1bfb | 784 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
785 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
786 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 787 | |
411e1bfb | 788 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
789 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
790 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
791 | |
792 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
793 | offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
794 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
795 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 796 | |
411e1bfb | 797 | /* Like GOT_TPREL16_DS, but no overflow. */ |
46807bf4 AM |
798 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
799 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 800 | |
411e1bfb | 801 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
802 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
803 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 804 | |
411e1bfb | 805 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
806 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
807 | ppc64_elf_unhandled_reloc), | |
808 | ||
809 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, FALSE, dont, | |
810 | ppc64_elf_unhandled_reloc), | |
811 | ||
812 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, | |
813 | bfd_elf_generic_reloc), | |
e054468f | 814 | |
25f23106 | 815 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
816 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
817 | bfd_elf_generic_reloc), | |
25f23106 AM |
818 | |
819 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
820 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
821 | bfd_elf_generic_reloc), | |
25f23106 AM |
822 | |
823 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
824 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, TRUE, signed, |
825 | bfd_elf_generic_reloc), | |
25f23106 AM |
826 | |
827 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
828 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
829 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, TRUE, signed, |
830 | ppc64_elf_ha_reloc), | |
25f23106 | 831 | |
4a969973 AM |
832 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, TRUE, dont, |
833 | bfd_elf_generic_reloc), | |
834 | ||
835 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, TRUE, dont, | |
836 | ppc64_elf_ha_reloc), | |
837 | ||
838 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, TRUE, dont, | |
839 | bfd_elf_generic_reloc), | |
840 | ||
841 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, TRUE, dont, | |
842 | ppc64_elf_ha_reloc), | |
843 | ||
844 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, TRUE, dont, | |
845 | bfd_elf_generic_reloc), | |
846 | ||
847 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, TRUE, dont, | |
848 | ppc64_elf_ha_reloc), | |
849 | ||
a680de9a | 850 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
851 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
852 | ppc64_elf_ha_reloc), | |
a680de9a | 853 | |
7ba71655 | 854 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
855 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
856 | ppc64_elf_ha_reloc), | |
7ba71655 | 857 | |
f9c6b907 | 858 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
859 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
860 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
861 | |
862 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
863 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
864 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
865 | |
866 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
867 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
868 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
869 | |
870 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
871 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
872 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
873 | |
874 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
875 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
876 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
877 | |
878 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
879 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
880 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 881 | |
006589cf | 882 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
883 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
884 | bfd_elf_generic_reloc), | |
006589cf | 885 | |
45965137 | 886 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
887 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
888 | bfd_elf_generic_reloc), | |
45965137 | 889 | |
5663e321 AM |
890 | HOW (R_PPC64_PLTSEQ_NOTOC, 2, 32, 0, 0, FALSE, dont, |
891 | bfd_elf_generic_reloc), | |
892 | ||
893 | HOW (R_PPC64_PLTCALL_NOTOC, 2, 32, 0, 0, FALSE, dont, | |
894 | bfd_elf_generic_reloc), | |
895 | ||
896 | HOW (R_PPC64_PCREL_OPT, 2, 32, 0, 0, FALSE, dont, | |
897 | bfd_elf_generic_reloc), | |
898 | ||
899 | HOW (R_PPC64_D34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
900 | ppc64_elf_prefix_reloc), | |
901 | ||
902 | HOW (R_PPC64_D34_LO, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, dont, | |
903 | ppc64_elf_prefix_reloc), | |
904 | ||
905 | HOW (R_PPC64_D34_HI30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
906 | ppc64_elf_prefix_reloc), | |
907 | ||
908 | HOW (R_PPC64_D34_HA30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
909 | ppc64_elf_prefix_reloc), | |
910 | ||
911 | HOW (R_PPC64_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
912 | ppc64_elf_prefix_reloc), | |
913 | ||
914 | HOW (R_PPC64_GOT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
915 | ppc64_elf_unhandled_reloc), | |
916 | ||
917 | HOW (R_PPC64_PLT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
918 | ppc64_elf_unhandled_reloc), | |
919 | ||
920 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
921 | ppc64_elf_unhandled_reloc), | |
922 | ||
923 | HOW (R_PPC64_ADDR16_HIGHER34, 1, 16, 0xffff, 34, FALSE, dont, | |
924 | bfd_elf_generic_reloc), | |
925 | ||
926 | HOW (R_PPC64_ADDR16_HIGHERA34, 1, 16, 0xffff, 34, FALSE, dont, | |
927 | ppc64_elf_ha_reloc), | |
928 | ||
929 | HOW (R_PPC64_ADDR16_HIGHEST34, 1, 16, 0xffff, 50, FALSE, dont, | |
930 | bfd_elf_generic_reloc), | |
931 | ||
932 | HOW (R_PPC64_ADDR16_HIGHESTA34, 1, 16, 0xffff, 50, FALSE, dont, | |
933 | ppc64_elf_ha_reloc), | |
934 | ||
935 | HOW (R_PPC64_REL16_HIGHER34, 1, 16, 0xffff, 34, TRUE, dont, | |
936 | bfd_elf_generic_reloc), | |
937 | ||
938 | HOW (R_PPC64_REL16_HIGHERA34, 1, 16, 0xffff, 34, TRUE, dont, | |
939 | ppc64_elf_ha_reloc), | |
940 | ||
941 | HOW (R_PPC64_REL16_HIGHEST34, 1, 16, 0xffff, 50, TRUE, dont, | |
942 | bfd_elf_generic_reloc), | |
943 | ||
944 | HOW (R_PPC64_REL16_HIGHESTA34, 1, 16, 0xffff, 50, TRUE, dont, | |
945 | ppc64_elf_ha_reloc), | |
946 | ||
947 | HOW (R_PPC64_D28, 4, 28, 0xfff0000ffffULL, 0, FALSE, signed, | |
948 | ppc64_elf_prefix_reloc), | |
949 | ||
950 | HOW (R_PPC64_PCREL28, 4, 28, 0xfff0000ffffULL, 0, TRUE, signed, | |
951 | ppc64_elf_prefix_reloc), | |
952 | ||
5bd4f169 | 953 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
954 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
955 | NULL), | |
5bd4f169 AM |
956 | |
957 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
958 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
959 | NULL), | |
5bd4f169 AM |
960 | }; |
961 | ||
962 | \f | |
963 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
964 | be done. */ | |
965 | ||
966 | static void | |
4ce794b7 | 967 | ppc_howto_init (void) |
5bd4f169 AM |
968 | { |
969 | unsigned int i, type; | |
970 | ||
a4b6fadd | 971 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
972 | { |
973 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 974 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
975 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
976 | } | |
977 | } | |
978 | ||
979 | static reloc_howto_type * | |
f3185997 | 980 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 981 | bfd_reloc_code_real_type code) |
5bd4f169 | 982 | { |
411e1bfb | 983 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
984 | |
985 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
986 | /* Initialize howto table if needed. */ | |
987 | ppc_howto_init (); | |
988 | ||
4ce794b7 | 989 | switch (code) |
5bd4f169 AM |
990 | { |
991 | default: | |
f3185997 | 992 | /* xgettext:c-format */ |
2cdcc330 AM |
993 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
994 | (int) code); | |
f3185997 | 995 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 996 | return NULL; |
5bd4f169 | 997 | |
411e1bfb AM |
998 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
999 | break; | |
1000 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1001 | break; | |
1002 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1003 | break; | |
1004 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1005 | break; | |
1006 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1007 | break; | |
1008 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1009 | break; | |
f9c6b907 AM |
1010 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
1011 | break; | |
411e1bfb | 1012 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 1013 | break; |
f9c6b907 AM |
1014 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
1015 | break; | |
411e1bfb | 1016 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1017 | break; |
411e1bfb | 1018 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1019 | break; |
411e1bfb | 1020 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1021 | break; |
411e1bfb | 1022 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1023 | break; |
05d0e962 AM |
1024 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
1025 | break; | |
411e1bfb | 1026 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1027 | break; |
411e1bfb | 1028 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1029 | break; |
411e1bfb | 1030 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1031 | break; |
411e1bfb | 1032 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1033 | break; |
411e1bfb | 1034 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1035 | break; |
411e1bfb | 1036 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1037 | break; |
411e1bfb | 1038 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1039 | break; |
411e1bfb | 1040 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1041 | break; |
411e1bfb | 1042 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1043 | break; |
411e1bfb | 1044 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1045 | break; |
411e1bfb | 1046 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1047 | break; |
411e1bfb | 1048 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1049 | break; |
411e1bfb | 1050 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1051 | break; |
411e1bfb | 1052 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1053 | break; |
411e1bfb | 1054 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1055 | break; |
411e1bfb | 1056 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1057 | break; |
411e1bfb | 1058 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1059 | break; |
411e1bfb | 1060 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1061 | break; |
411e1bfb | 1062 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1063 | break; |
411e1bfb | 1064 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1065 | break; |
411e1bfb | 1066 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1067 | break; |
411e1bfb | 1068 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1069 | break; |
411e1bfb | 1070 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1071 | break; |
411e1bfb | 1072 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1073 | break; |
411e1bfb | 1074 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1075 | break; |
411e1bfb | 1076 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1077 | break; |
411e1bfb | 1078 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1079 | break; |
411e1bfb | 1080 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1081 | break; |
411e1bfb | 1082 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1083 | break; |
411e1bfb | 1084 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1085 | break; |
411e1bfb | 1086 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1087 | break; |
411e1bfb | 1088 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1089 | break; |
411e1bfb | 1090 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1091 | break; |
411e1bfb | 1092 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1093 | break; |
411e1bfb | 1094 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1095 | break; |
411e1bfb | 1096 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1097 | break; |
411e1bfb | 1098 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1099 | break; |
411e1bfb | 1100 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1101 | break; |
411e1bfb | 1102 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1103 | break; |
411e1bfb | 1104 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1105 | break; |
411e1bfb | 1106 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1107 | break; |
411e1bfb | 1108 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1109 | break; |
411e1bfb | 1110 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1111 | break; |
411e1bfb | 1112 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1113 | break; |
411e1bfb | 1114 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1115 | break; |
411e1bfb | 1116 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1117 | break; |
411e1bfb | 1118 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1119 | break; |
411e1bfb | 1120 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1121 | break; |
411e1bfb | 1122 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1123 | break; |
727fc41e AM |
1124 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1125 | break; | |
1126 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1127 | break; | |
411e1bfb | 1128 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1129 | break; |
411e1bfb | 1130 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1131 | break; |
411e1bfb | 1132 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1133 | break; |
411e1bfb | 1134 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1135 | break; |
f9c6b907 AM |
1136 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1137 | break; | |
411e1bfb | 1138 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1139 | break; |
f9c6b907 AM |
1140 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1141 | break; | |
411e1bfb | 1142 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1143 | break; |
411e1bfb AM |
1144 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1145 | break; | |
1146 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1147 | break; | |
1148 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1149 | break; | |
f9c6b907 AM |
1150 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1151 | break; | |
411e1bfb AM |
1152 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1153 | break; | |
f9c6b907 AM |
1154 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1155 | break; | |
411e1bfb AM |
1156 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1157 | break; | |
1158 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1159 | break; | |
1160 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1161 | break; | |
1162 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1163 | break; | |
1164 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1165 | break; | |
1166 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1167 | break; | |
1168 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1169 | break; | |
1170 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1171 | break; | |
1172 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1173 | break; | |
1174 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1175 | break; | |
1176 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1177 | break; | |
1178 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1179 | break; | |
1180 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1181 | break; | |
1182 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1183 | break; | |
1184 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1185 | break; | |
1186 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1187 | break; | |
1188 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1189 | break; | |
1190 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1191 | break; | |
1192 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1193 | break; | |
1194 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1195 | break; | |
1196 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1197 | break; | |
1198 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1199 | break; | |
1200 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1201 | break; | |
1202 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1203 | break; | |
1204 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1205 | break; | |
1206 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1207 | break; | |
1208 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1209 | break; | |
1210 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1211 | break; | |
1212 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1213 | break; | |
25f23106 AM |
1214 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1215 | break; | |
1216 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1217 | break; | |
1218 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1219 | break; | |
1220 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1221 | break; | |
4a969973 AM |
1222 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1223 | break; | |
1224 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1225 | break; | |
1226 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1227 | break; | |
1228 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1229 | break; | |
1230 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1231 | break; | |
1232 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1233 | break; | |
7ba71655 AM |
1234 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1235 | break; | |
a680de9a PB |
1236 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1237 | break; | |
006589cf AM |
1238 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1239 | break; | |
45965137 AM |
1240 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1241 | break; | |
5663e321 AM |
1242 | case BFD_RELOC_PPC64_D34: r = R_PPC64_D34; |
1243 | break; | |
1244 | case BFD_RELOC_PPC64_D34_LO: r = R_PPC64_D34_LO; | |
1245 | break; | |
1246 | case BFD_RELOC_PPC64_D34_HI30: r = R_PPC64_D34_HI30; | |
1247 | break; | |
1248 | case BFD_RELOC_PPC64_D34_HA30: r = R_PPC64_D34_HA30; | |
1249 | break; | |
1250 | case BFD_RELOC_PPC64_PCREL34: r = R_PPC64_PCREL34; | |
1251 | break; | |
1252 | case BFD_RELOC_PPC64_GOT_PCREL34: r = R_PPC64_GOT_PCREL34; | |
1253 | break; | |
1254 | case BFD_RELOC_PPC64_PLT_PCREL34: r = R_PPC64_PLT_PCREL34; | |
1255 | break; | |
1256 | case BFD_RELOC_PPC64_ADDR16_HIGHER34: r = R_PPC64_ADDR16_HIGHER34; | |
1257 | break; | |
1258 | case BFD_RELOC_PPC64_ADDR16_HIGHERA34: r = R_PPC64_ADDR16_HIGHERA34; | |
1259 | break; | |
1260 | case BFD_RELOC_PPC64_ADDR16_HIGHEST34: r = R_PPC64_ADDR16_HIGHEST34; | |
1261 | break; | |
1262 | case BFD_RELOC_PPC64_ADDR16_HIGHESTA34: r = R_PPC64_ADDR16_HIGHESTA34; | |
1263 | break; | |
1264 | case BFD_RELOC_PPC64_REL16_HIGHER34: r = R_PPC64_REL16_HIGHER34; | |
1265 | break; | |
1266 | case BFD_RELOC_PPC64_REL16_HIGHERA34: r = R_PPC64_REL16_HIGHERA34; | |
1267 | break; | |
1268 | case BFD_RELOC_PPC64_REL16_HIGHEST34: r = R_PPC64_REL16_HIGHEST34; | |
1269 | break; | |
1270 | case BFD_RELOC_PPC64_REL16_HIGHESTA34: r = R_PPC64_REL16_HIGHESTA34; | |
1271 | break; | |
1272 | case BFD_RELOC_PPC64_D28: r = R_PPC64_D28; | |
1273 | break; | |
1274 | case BFD_RELOC_PPC64_PCREL28: r = R_PPC64_PCREL28; | |
1275 | break; | |
411e1bfb AM |
1276 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1277 | break; | |
1278 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1279 | break; |
1280 | } | |
1281 | ||
4ce794b7 | 1282 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1283 | }; |
1284 | ||
157090f7 AM |
1285 | static reloc_howto_type * |
1286 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1287 | const char *r_name) | |
1288 | { | |
1289 | unsigned int i; | |
1290 | ||
a4b6fadd | 1291 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1292 | if (ppc64_elf_howto_raw[i].name != NULL |
1293 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1294 | return &ppc64_elf_howto_raw[i]; | |
1295 | ||
1296 | return NULL; | |
1297 | } | |
1298 | ||
5bd4f169 AM |
1299 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1300 | ||
f3185997 | 1301 | static bfd_boolean |
4aef7643 | 1302 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1303 | Elf_Internal_Rela *dst) |
5bd4f169 | 1304 | { |
65f38f15 AM |
1305 | unsigned int type; |
1306 | ||
ef60b7ff | 1307 | /* Initialize howto table if needed. */ |
5bd4f169 | 1308 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1309 | ppc_howto_init (); |
1310 | ||
65f38f15 | 1311 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1312 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1313 | { |
695344c0 | 1314 | /* xgettext:c-format */ |
0aa13fee | 1315 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1316 | abfd, type); |
f3185997 NC |
1317 | bfd_set_error (bfd_error_bad_value); |
1318 | return FALSE; | |
d0fb9a8d | 1319 | } |
65f38f15 | 1320 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1321 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1322 | { | |
1323 | /* xgettext:c-format */ | |
1324 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1325 | abfd, type); | |
1326 | bfd_set_error (bfd_error_bad_value); | |
1327 | return FALSE; | |
1328 | } | |
2cdcc330 | 1329 | |
f3185997 | 1330 | return TRUE; |
5bd4f169 AM |
1331 | } |
1332 | ||
04c9666a | 1333 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1334 | |
1335 | static bfd_reloc_status_type | |
4ce794b7 AM |
1336 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1337 | void *data, asection *input_section, | |
1338 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1339 | { |
a680de9a PB |
1340 | enum elf_ppc64_reloc_type r_type; |
1341 | long insn; | |
1342 | bfd_size_type octets; | |
3de43e7b | 1343 | bfd_vma value; |
a680de9a | 1344 | |
805fc799 AM |
1345 | /* If this is a relocatable link (output_bfd test tells us), just |
1346 | call the generic function. Any adjustment will be done at final | |
1347 | link time. */ | |
1348 | if (output_bfd != NULL) | |
cedb70c5 | 1349 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1350 | input_section, output_bfd, error_message); |
1351 | ||
5663e321 AM |
1352 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1353 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1354 | doesn't matter. */ |
a680de9a | 1355 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1356 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1357 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1358 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1359 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1360 | reloc_entry->addend += 1ULL << 33; | |
1361 | else | |
1362 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1363 | if (r_type != R_PPC64_REL16DX_HA) |
1364 | return bfd_reloc_continue; | |
1365 | ||
1366 | value = 0; | |
1367 | if (!bfd_is_com_section (symbol->section)) | |
1368 | value = symbol->value; | |
1369 | value += (reloc_entry->addend | |
1370 | + symbol->section->output_offset | |
1371 | + symbol->section->output_section->vma); | |
1372 | value -= (reloc_entry->address | |
1373 | + input_section->output_offset | |
1374 | + input_section->output_section->vma); | |
3de43e7b | 1375 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
1376 | |
1377 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1378 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1379 | insn &= ~0x1fffc1; | |
3de43e7b | 1380 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1381 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1382 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1383 | return bfd_reloc_overflow; |
1384 | return bfd_reloc_ok; | |
805fc799 | 1385 | } |
5bd4f169 | 1386 | |
2441e016 AM |
1387 | static bfd_reloc_status_type |
1388 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1389 | void *data, asection *input_section, | |
1390 | bfd *output_bfd, char **error_message) | |
1391 | { | |
1392 | if (output_bfd != NULL) | |
1393 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1394 | input_section, output_bfd, error_message); | |
1395 | ||
699733f6 AM |
1396 | if (strcmp (symbol->section->name, ".opd") == 0 |
1397 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1398 | { |
1399 | bfd_vma dest = opd_entry_value (symbol->section, | |
1400 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1401 | NULL, NULL, FALSE); |
2441e016 AM |
1402 | if (dest != (bfd_vma) -1) |
1403 | reloc_entry->addend = dest - (symbol->value | |
1404 | + symbol->section->output_section->vma | |
1405 | + symbol->section->output_offset); | |
1406 | } | |
810d4e75 AM |
1407 | else |
1408 | { | |
1409 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1410 | ||
1411 | if (symbol->section->owner != abfd | |
9f284bf9 | 1412 | && symbol->section->owner != NULL |
810d4e75 AM |
1413 | && abiversion (symbol->section->owner) >= 2) |
1414 | { | |
1415 | unsigned int i; | |
1416 | ||
1417 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1418 | { | |
1419 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1420 | ||
1421 | if (strcmp (symdef->name, symbol->name) == 0) | |
1422 | { | |
1423 | elfsym = (elf_symbol_type *) symdef; | |
1424 | break; | |
1425 | } | |
1426 | } | |
1427 | } | |
1428 | reloc_entry->addend | |
1429 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1430 | } | |
2441e016 AM |
1431 | return bfd_reloc_continue; |
1432 | } | |
1433 | ||
805fc799 | 1434 | static bfd_reloc_status_type |
4ce794b7 AM |
1435 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1436 | void *data, asection *input_section, | |
1437 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1438 | { |
1439 | long insn; | |
04c9666a | 1440 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1441 | bfd_size_type octets; |
794e51c0 AM |
1442 | /* Assume 'at' branch hints. */ |
1443 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1444 | |
1445 | /* If this is a relocatable link (output_bfd test tells us), just | |
1446 | call the generic function. Any adjustment will be done at final | |
1447 | link time. */ | |
5bd4f169 | 1448 | if (output_bfd != NULL) |
cedb70c5 | 1449 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1450 | input_section, output_bfd, error_message); |
1451 | ||
1452 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1453 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1454 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1455 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1456 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1457 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1458 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1459 | |
794e51c0 | 1460 | if (is_isa_v2) |
5bd4f169 | 1461 | { |
805fc799 AM |
1462 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1463 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1464 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1465 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1466 | insn |= 0x02 << 21; | |
1467 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1468 | insn |= 0x08 << 21; | |
1469 | else | |
2441e016 | 1470 | goto out; |
5bd4f169 | 1471 | } |
805fc799 AM |
1472 | else |
1473 | { | |
1474 | bfd_vma target = 0; | |
1475 | bfd_vma from; | |
5bd4f169 | 1476 | |
805fc799 AM |
1477 | if (!bfd_is_com_section (symbol->section)) |
1478 | target = symbol->value; | |
1479 | target += symbol->section->output_section->vma; | |
1480 | target += symbol->section->output_offset; | |
1481 | target += reloc_entry->addend; | |
5bd4f169 | 1482 | |
805fc799 AM |
1483 | from = (reloc_entry->address |
1484 | + input_section->output_offset | |
1485 | + input_section->output_section->vma); | |
5bd4f169 | 1486 | |
805fc799 AM |
1487 | /* Invert 'y' bit if not the default. */ |
1488 | if ((bfd_signed_vma) (target - from) < 0) | |
1489 | insn ^= 0x01 << 21; | |
1490 | } | |
4ce794b7 | 1491 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1492 | out: |
1493 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1494 | input_section, output_bfd, error_message); | |
805fc799 | 1495 | } |
5bd4f169 | 1496 | |
805fc799 | 1497 | static bfd_reloc_status_type |
4ce794b7 AM |
1498 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1499 | void *data, asection *input_section, | |
1500 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1501 | { |
1502 | /* If this is a relocatable link (output_bfd test tells us), just | |
1503 | call the generic function. Any adjustment will be done at final | |
1504 | link time. */ | |
1505 | if (output_bfd != NULL) | |
cedb70c5 | 1506 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1507 | input_section, output_bfd, error_message); |
5bd4f169 | 1508 | |
805fc799 AM |
1509 | /* Subtract the symbol section base address. */ |
1510 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1511 | return bfd_reloc_continue; |
1512 | } | |
1513 | ||
805fc799 | 1514 | static bfd_reloc_status_type |
4ce794b7 AM |
1515 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1516 | void *data, asection *input_section, | |
1517 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1518 | { |
1519 | /* If this is a relocatable link (output_bfd test tells us), just | |
1520 | call the generic function. Any adjustment will be done at final | |
1521 | link time. */ | |
1522 | if (output_bfd != NULL) | |
cedb70c5 | 1523 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1524 | input_section, output_bfd, error_message); |
1525 | ||
1526 | /* Subtract the symbol section base address. */ | |
1527 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1528 | ||
1529 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1530 | reloc_entry->addend += 0x8000; | |
1531 | return bfd_reloc_continue; | |
1532 | } | |
1533 | ||
1534 | static bfd_reloc_status_type | |
4ce794b7 AM |
1535 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1536 | void *data, asection *input_section, | |
1537 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1538 | { |
1539 | bfd_vma TOCstart; | |
1540 | ||
1541 | /* If this is a relocatable link (output_bfd test tells us), just | |
1542 | call the generic function. Any adjustment will be done at final | |
1543 | link time. */ | |
1544 | if (output_bfd != NULL) | |
cedb70c5 | 1545 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1546 | input_section, output_bfd, error_message); |
1547 | ||
1548 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1549 | if (TOCstart == 0) | |
1c865ab2 | 1550 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1551 | |
1552 | /* Subtract the TOC base address. */ | |
1553 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1554 | return bfd_reloc_continue; | |
1555 | } | |
1556 | ||
1557 | static bfd_reloc_status_type | |
4ce794b7 AM |
1558 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1559 | void *data, asection *input_section, | |
1560 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1561 | { |
1562 | bfd_vma TOCstart; | |
1563 | ||
1564 | /* If this is a relocatable link (output_bfd test tells us), just | |
1565 | call the generic function. Any adjustment will be done at final | |
1566 | link time. */ | |
1567 | if (output_bfd != NULL) | |
cedb70c5 | 1568 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1569 | input_section, output_bfd, error_message); |
1570 | ||
1571 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1572 | if (TOCstart == 0) | |
1c865ab2 | 1573 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1574 | |
1575 | /* Subtract the TOC base address. */ | |
1576 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1577 | ||
1578 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1579 | reloc_entry->addend += 0x8000; | |
1580 | return bfd_reloc_continue; | |
1581 | } | |
1582 | ||
1583 | static bfd_reloc_status_type | |
4ce794b7 AM |
1584 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1585 | void *data, asection *input_section, | |
1586 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1587 | { |
1588 | bfd_vma TOCstart; | |
1589 | bfd_size_type octets; | |
1590 | ||
1591 | /* If this is a relocatable link (output_bfd test tells us), just | |
1592 | call the generic function. Any adjustment will be done at final | |
1593 | link time. */ | |
1594 | if (output_bfd != NULL) | |
cedb70c5 | 1595 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1596 | input_section, output_bfd, error_message); |
1597 | ||
1598 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1599 | if (TOCstart == 0) | |
1c865ab2 | 1600 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1601 | |
1602 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1603 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
1604 | return bfd_reloc_ok; | |
1605 | } | |
1606 | ||
5663e321 AM |
1607 | static bfd_reloc_status_type |
1608 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1609 | void *data, asection *input_section, | |
1610 | bfd *output_bfd, char **error_message) | |
1611 | { | |
1612 | uint64_t insn; | |
1613 | bfd_vma targ; | |
1614 | ||
1615 | if (output_bfd != NULL) | |
1616 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1617 | input_section, output_bfd, error_message); | |
1618 | ||
1619 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1620 | insn <<= 32; | |
1621 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4); | |
1622 | ||
1623 | targ = (symbol->section->output_section->vma | |
1624 | + symbol->section->output_offset | |
1625 | + reloc_entry->addend); | |
1626 | if (!bfd_is_com_section (symbol->section)) | |
1627 | targ += symbol->value; | |
1628 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1629 | targ += 1ULL << 33; | |
1630 | if (reloc_entry->howto->pc_relative) | |
1631 | { | |
1632 | bfd_vma from = (reloc_entry->address | |
1633 | + input_section->output_offset | |
1634 | + input_section->output_section->vma); | |
1635 | targ -=from; | |
1636 | } | |
1637 | targ >>= reloc_entry->howto->rightshift; | |
1638 | insn &= ~reloc_entry->howto->dst_mask; | |
1639 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
1640 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + reloc_entry->address); | |
1641 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address + 4); | |
1642 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed | |
1643 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1644 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1645 | return bfd_reloc_overflow; | |
1646 | return bfd_reloc_ok; | |
1647 | } | |
1648 | ||
805fc799 | 1649 | static bfd_reloc_status_type |
4ce794b7 AM |
1650 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1651 | void *data, asection *input_section, | |
1652 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1653 | { |
1654 | /* If this is a relocatable link (output_bfd test tells us), just | |
1655 | call the generic function. Any adjustment will be done at final | |
1656 | link time. */ | |
1657 | if (output_bfd != NULL) | |
cedb70c5 | 1658 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1659 | input_section, output_bfd, error_message); |
1660 | ||
1661 | if (error_message != NULL) | |
1662 | { | |
1663 | static char buf[60]; | |
1664 | sprintf (buf, "generic linker can't handle %s", | |
1665 | reloc_entry->howto->name); | |
1666 | *error_message = buf; | |
1667 | } | |
1668 | return bfd_reloc_dangerous; | |
1669 | } | |
1670 | ||
927be08e AM |
1671 | /* Track GOT entries needed for a given symbol. We might need more |
1672 | than one got entry per symbol. */ | |
1673 | struct got_entry | |
1674 | { | |
1675 | struct got_entry *next; | |
1676 | ||
1677 | /* The symbol addend that we'll be placing in the GOT. */ | |
1678 | bfd_vma addend; | |
1679 | ||
1680 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1681 | symbol referenced from different input files. This is to support | |
1682 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1683 | from one input file to another. After partitioning into TOC groups | |
1684 | we merge entries within the group. | |
1685 | ||
1686 | Point to the BFD owning this GOT entry. */ | |
1687 | bfd *owner; | |
1688 | ||
1689 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1690 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1691 | unsigned char tls_type; |
927be08e AM |
1692 | |
1693 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1694 | unsigned char is_indirect; |
927be08e AM |
1695 | |
1696 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1697 | union | |
2cdcc330 AM |
1698 | { |
1699 | bfd_signed_vma refcount; | |
1700 | bfd_vma offset; | |
1701 | struct got_entry *ent; | |
1702 | } got; | |
927be08e AM |
1703 | }; |
1704 | ||
1705 | /* The same for PLT. */ | |
1706 | struct plt_entry | |
1707 | { | |
1708 | struct plt_entry *next; | |
1709 | ||
1710 | bfd_vma addend; | |
1711 | ||
1712 | union | |
2cdcc330 AM |
1713 | { |
1714 | bfd_signed_vma refcount; | |
1715 | bfd_vma offset; | |
1716 | } plt; | |
927be08e AM |
1717 | }; |
1718 | ||
e717da7e AM |
1719 | struct ppc64_elf_obj_tdata |
1720 | { | |
1721 | struct elf_obj_tdata elf; | |
1722 | ||
1723 | /* Shortcuts to dynamic linker sections. */ | |
1724 | asection *got; | |
1725 | asection *relgot; | |
1726 | ||
b3fac117 AM |
1727 | /* Used during garbage collection. We attach global symbols defined |
1728 | on removed .opd entries to this section so that the sym is removed. */ | |
1729 | asection *deleted_section; | |
81688140 | 1730 | |
927be08e | 1731 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1732 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1733 | struct got_entry tlsld_got; |
8860955f | 1734 | |
2cdcc330 AM |
1735 | union |
1736 | { | |
729eabd5 AM |
1737 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1738 | Elf_Internal_Rela *relocs; | |
1739 | ||
1740 | /* Section contents. */ | |
1741 | bfd_byte *contents; | |
1742 | } opd; | |
d77c8a4b AM |
1743 | |
1744 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1745 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1746 | unsigned int has_small_toc_reloc : 1; |
1747 | ||
560c8763 AM |
1748 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1749 | instruction not one we handle. */ | |
1750 | unsigned int unexpected_toc_insn : 1; | |
066f4018 AM |
1751 | |
1752 | /* Set if got relocs that can be optimised are present in this file. */ | |
1753 | unsigned int has_gotrel : 1; | |
e717da7e AM |
1754 | }; |
1755 | ||
1756 | #define ppc64_elf_tdata(bfd) \ | |
1757 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1758 | ||
1759 | #define ppc64_tlsld_got(bfd) \ | |
1760 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1761 | ||
0c8d6e5c AM |
1762 | #define is_ppc64_elf(bfd) \ |
1763 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1764 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1765 | |
e717da7e AM |
1766 | /* Override the generic function because we store some extras. */ |
1767 | ||
1768 | static bfd_boolean | |
1769 | ppc64_elf_mkobject (bfd *abfd) | |
1770 | { | |
0ffa91dd | 1771 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1772 | PPC64_ELF_DATA); |
e717da7e AM |
1773 | } |
1774 | ||
feee612b | 1775 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1776 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1777 | |
b34976b6 | 1778 | static bfd_boolean |
4ce794b7 | 1779 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1780 | { |
14b57c7c AM |
1781 | if (!abfd->arch_info->the_default) |
1782 | return TRUE; | |
1783 | ||
1784 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1785 | { |
1786 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1787 | ||
1788 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1789 | { | |
1790 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1791 | abfd->arch_info = abfd->arch_info->next; | |
1792 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1793 | } | |
1794 | } | |
14b57c7c | 1795 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1796 | } |
1797 | ||
d37c89e5 AM |
1798 | /* Support for core dump NOTE sections. */ |
1799 | ||
1800 | static bfd_boolean | |
1801 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1802 | { | |
eea6121a | 1803 | size_t offset, size; |
d37c89e5 AM |
1804 | |
1805 | if (note->descsz != 504) | |
1806 | return FALSE; | |
1807 | ||
1808 | /* pr_cursig */ | |
228e534f | 1809 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1810 | |
1811 | /* pr_pid */ | |
228e534f | 1812 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1813 | |
1814 | /* pr_reg */ | |
1815 | offset = 112; | |
eea6121a | 1816 | size = 384; |
d37c89e5 AM |
1817 | |
1818 | /* Make a ".reg/999" section. */ | |
1819 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1820 | size, note->descpos + offset); |
d37c89e5 AM |
1821 | } |
1822 | ||
1823 | static bfd_boolean | |
1824 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1825 | { | |
1826 | if (note->descsz != 136) | |
1827 | return FALSE; | |
1828 | ||
228e534f | 1829 | elf_tdata (abfd)->core->pid |
bc989cdc | 1830 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1831 | elf_tdata (abfd)->core->program |
d37c89e5 | 1832 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1833 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1834 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1835 | ||
1836 | return TRUE; | |
1837 | } | |
1838 | ||
183e98be AM |
1839 | static char * |
1840 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1841 | ...) | |
1842 | { | |
1843 | switch (note_type) | |
1844 | { | |
1845 | default: | |
1846 | return NULL; | |
1847 | ||
1848 | case NT_PRPSINFO: | |
1849 | { | |
9ef6d1e3 | 1850 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1851 | va_list ap; |
1852 | ||
1853 | va_start (ap, note_type); | |
75cd47ed | 1854 | memset (data, 0, sizeof (data)); |
183e98be | 1855 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1856 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1857 | DIAGNOSTIC_PUSH; |
be3e27bb | 1858 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1859 | -Wstringop-truncation: |
1860 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1861 | */ | |
95da9854 L |
1862 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1863 | #endif | |
183e98be | 1864 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1865 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1866 | DIAGNOSTIC_POP; |
fe75810f | 1867 | #endif |
183e98be AM |
1868 | va_end (ap); |
1869 | return elfcore_write_note (abfd, buf, bufsiz, | |
1870 | "CORE", note_type, data, sizeof (data)); | |
1871 | } | |
1872 | ||
1873 | case NT_PRSTATUS: | |
1874 | { | |
1875 | char data[504]; | |
1876 | va_list ap; | |
1877 | long pid; | |
1878 | int cursig; | |
1879 | const void *greg; | |
1880 | ||
1881 | va_start (ap, note_type); | |
1882 | memset (data, 0, 112); | |
1883 | pid = va_arg (ap, long); | |
1884 | bfd_put_32 (abfd, pid, data + 32); | |
1885 | cursig = va_arg (ap, int); | |
1886 | bfd_put_16 (abfd, cursig, data + 12); | |
1887 | greg = va_arg (ap, const void *); | |
1888 | memcpy (data + 112, greg, 384); | |
1889 | memset (data + 496, 0, 8); | |
1890 | va_end (ap); | |
1891 | return elfcore_write_note (abfd, buf, bufsiz, | |
1892 | "CORE", note_type, data, sizeof (data)); | |
1893 | } | |
1894 | } | |
1895 | } | |
1896 | ||
5d35169e AM |
1897 | /* Add extra PPC sections. */ |
1898 | ||
2cdcc330 | 1899 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1900 | { |
07d6d2b8 AM |
1901 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1902 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1903 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1904 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1905 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1906 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1907 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1908 | }; |
1909 | ||
7c8fe5c4 AM |
1910 | enum _ppc64_sec_type { |
1911 | sec_normal = 0, | |
1912 | sec_opd = 1, | |
1913 | sec_toc = 2 | |
1914 | }; | |
1915 | ||
f0abc2a1 AM |
1916 | struct _ppc64_elf_section_data |
1917 | { | |
1918 | struct bfd_elf_section_data elf; | |
411e1bfb | 1919 | |
f0abc2a1 AM |
1920 | union |
1921 | { | |
51aecdc5 AM |
1922 | /* An array with one entry for each opd function descriptor, |
1923 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1924 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1925 | struct _opd_sec_data |
1926 | { | |
1927 | /* Points to the function code section for local opd entries. */ | |
1928 | asection **func_sec; | |
1929 | ||
1930 | /* After editing .opd, adjust references to opd local syms. */ | |
1931 | long *adjust; | |
1932 | } opd; | |
7c8fe5c4 | 1933 | |
3a71aa26 AM |
1934 | /* An array for toc sections, indexed by offset/8. */ |
1935 | struct _toc_sec_data | |
1936 | { | |
1937 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1938 | unsigned *symndx; | |
1939 | ||
1940 | /* And the relocation addend. */ | |
1941 | bfd_vma *add; | |
1942 | } toc; | |
7c8fe5c4 AM |
1943 | } u; |
1944 | ||
1945 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 1946 | |
7c8fe5c4 AM |
1947 | /* Flag set when small branches are detected. Used to |
1948 | select suitable defaults for the stub group size. */ | |
1949 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
1950 | |
1951 | /* Flag set when PLTCALL relocs are detected. */ | |
1952 | unsigned int has_pltcall:1; | |
066f4018 AM |
1953 | |
1954 | /* Flag set when section has GOT relocations that can be optimised. */ | |
1955 | unsigned int has_gotrel:1; | |
f0abc2a1 AM |
1956 | }; |
1957 | ||
1958 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 1959 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
1960 | |
1961 | static bfd_boolean | |
4ce794b7 | 1962 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1963 | { |
f592407e AM |
1964 | if (!sec->used_by_bfd) |
1965 | { | |
1966 | struct _ppc64_elf_section_data *sdata; | |
1967 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1968 | |
f592407e AM |
1969 | sdata = bfd_zalloc (abfd, amt); |
1970 | if (sdata == NULL) | |
1971 | return FALSE; | |
1972 | sec->used_by_bfd = sdata; | |
1973 | } | |
f0abc2a1 AM |
1974 | |
1975 | return _bfd_elf_new_section_hook (abfd, sec); | |
1976 | } | |
4025353c | 1977 | |
74f0fb50 | 1978 | static struct _opd_sec_data * |
4025353c AM |
1979 | get_opd_info (asection * sec) |
1980 | { | |
1981 | if (sec != NULL | |
1982 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 1983 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 1984 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
1985 | return NULL; |
1986 | } | |
90e3cdf2 JJ |
1987 | \f |
1988 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 1989 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 1990 | static asection *synthetic_opd; |
90e3cdf2 | 1991 | |
699733f6 | 1992 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
1993 | |
1994 | static int | |
1995 | compare_symbols (const void *ap, const void *bp) | |
1996 | { | |
2cdcc330 AM |
1997 | const asymbol *a = *(const asymbol **) ap; |
1998 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 1999 | |
699733f6 AM |
2000 | /* Section symbols first. */ |
2001 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2002 | return -1; |
699733f6 | 2003 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2004 | return 1; |
2005 | ||
699733f6 | 2006 | /* then .opd symbols. */ |
cd285db5 AM |
2007 | if (synthetic_opd != NULL) |
2008 | { | |
2009 | if (strcmp (a->section->name, ".opd") == 0 | |
2010 | && strcmp (b->section->name, ".opd") != 0) | |
2011 | return -1; | |
2012 | if (strcmp (a->section->name, ".opd") != 0 | |
2013 | && strcmp (b->section->name, ".opd") == 0) | |
2014 | return 1; | |
2015 | } | |
90e3cdf2 | 2016 | |
699733f6 | 2017 | /* then other code symbols. */ |
2cdcc330 AM |
2018 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2019 | == (SEC_CODE | SEC_ALLOC)) | |
2020 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2021 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2022 | return -1; |
2023 | ||
2cdcc330 AM |
2024 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2025 | != (SEC_CODE | SEC_ALLOC)) | |
2026 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2027 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2028 | return 1; |
2029 | ||
2030 | if (synthetic_relocatable) | |
2031 | { | |
2032 | if (a->section->id < b->section->id) | |
2033 | return -1; | |
2034 | ||
2035 | if (a->section->id > b->section->id) | |
2036 | return 1; | |
2037 | } | |
2038 | ||
2039 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2040 | return -1; | |
2041 | ||
2042 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2043 | return 1; | |
2044 | ||
4d35a0aa AM |
2045 | /* For syms with the same value, prefer strong dynamic global function |
2046 | syms over other syms. */ | |
2047 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2048 | return -1; | |
2049 | ||
2050 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2051 | return 1; | |
2052 | ||
2053 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2054 | return -1; | |
2055 | ||
2056 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2057 | return 1; | |
2058 | ||
2059 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2060 | return -1; | |
2061 | ||
2062 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2063 | return 1; | |
2064 | ||
2065 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2066 | return -1; | |
2067 | ||
2068 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2069 | return 1; | |
2070 | ||
aaed6f5b | 2071 | return a > b; |
90e3cdf2 JJ |
2072 | } |
2073 | ||
699733f6 | 2074 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2075 | |
699733f6 | 2076 | static asymbol * |
7292b3ac | 2077 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 2078 | { |
699733f6 | 2079 | long mid; |
90e3cdf2 | 2080 | |
7292b3ac | 2081 | if (id == (unsigned) -1) |
699733f6 AM |
2082 | { |
2083 | while (lo < hi) | |
2084 | { | |
2085 | mid = (lo + hi) >> 1; | |
2086 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2087 | lo = mid + 1; | |
2088 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2089 | hi = mid; | |
2090 | else | |
2091 | return syms[mid]; | |
2092 | } | |
2093 | } | |
2094 | else | |
2095 | { | |
2096 | while (lo < hi) | |
2097 | { | |
2098 | mid = (lo + hi) >> 1; | |
2099 | if (syms[mid]->section->id < id) | |
2100 | lo = mid + 1; | |
2101 | else if (syms[mid]->section->id > id) | |
2102 | hi = mid; | |
2103 | else if (syms[mid]->value < value) | |
2104 | lo = mid + 1; | |
2105 | else if (syms[mid]->value > value) | |
2106 | hi = mid; | |
2107 | else | |
2108 | return syms[mid]; | |
2109 | } | |
2110 | } | |
2111 | return NULL; | |
90e3cdf2 JJ |
2112 | } |
2113 | ||
468392fb AM |
2114 | static bfd_boolean |
2115 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2116 | { | |
2117 | bfd_vma vma = *(bfd_vma *) ptr; | |
2118 | return ((section->flags & SEC_ALLOC) != 0 | |
2119 | && section->vma <= vma | |
2120 | && vma < section->vma + section->size); | |
2121 | } | |
2122 | ||
699733f6 | 2123 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2124 | entry syms. Also generate @plt symbols for the glink branch table. |
2125 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2126 | |
2127 | static long | |
a7535cf3 AM |
2128 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2129 | long static_count, asymbol **static_syms, | |
2130 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2131 | asymbol **ret) |
90e3cdf2 JJ |
2132 | { |
2133 | asymbol *s; | |
0ccf57bd | 2134 | size_t i, j, count; |
90e3cdf2 | 2135 | char *names; |
0ccf57bd | 2136 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2137 | asection *opd = NULL; |
90e3cdf2 | 2138 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2139 | asymbol **syms; |
ee67d69a | 2140 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2141 | |
2142 | *ret = NULL; | |
2143 | ||
ee67d69a AM |
2144 | if (abi < 2) |
2145 | { | |
2146 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2147 | if (opd == NULL && abi == 1) | |
2148 | return 0; | |
2149 | } | |
90e3cdf2 | 2150 | |
a5259595 AM |
2151 | syms = NULL; |
2152 | codesecsym = 0; | |
2153 | codesecsymend = 0; | |
2154 | secsymend = 0; | |
2155 | opdsymend = 0; | |
2156 | symcount = 0; | |
2157 | if (opd != NULL) | |
c9727e01 | 2158 | { |
a5259595 AM |
2159 | symcount = static_count; |
2160 | if (!relocatable) | |
2161 | symcount += dyn_count; | |
2162 | if (symcount == 0) | |
2163 | return 0; | |
c9727e01 | 2164 | |
a5259595 AM |
2165 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2166 | if (syms == NULL) | |
2167 | return -1; | |
90e3cdf2 | 2168 | |
a5259595 AM |
2169 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2170 | { | |
2171 | /* Use both symbol tables. */ | |
2172 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2173 | memcpy (syms + static_count, dyn_syms, | |
2174 | (dyn_count + 1) * sizeof (*syms)); | |
2175 | } | |
2176 | else if (!relocatable && static_count == 0) | |
2177 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2178 | else | |
2179 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2180 | |
0ccf57bd AM |
2181 | /* Trim uninteresting symbols. Interesting symbols are section, |
2182 | function, and notype symbols. */ | |
2183 | for (i = 0, j = 0; i < symcount; ++i) | |
2184 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2185 | | BSF_RELC | BSF_SRELC)) == 0) | |
2186 | syms[j++] = syms[i]; | |
2187 | symcount = j; | |
2188 | ||
a5259595 AM |
2189 | synthetic_relocatable = relocatable; |
2190 | synthetic_opd = opd; | |
2191 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2192 | |
a5259595 AM |
2193 | if (!relocatable && symcount > 1) |
2194 | { | |
bfa5bd2a PA |
2195 | /* Trim duplicate syms, since we may have merged the normal |
2196 | and dynamic symbols. Actually, we only care about syms | |
2197 | that have different values, so trim any with the same | |
2198 | value. Don't consider ifunc and ifunc resolver symbols | |
2199 | duplicates however, because GDB wants to know whether a | |
2200 | text symbol is an ifunc resolver. */ | |
a5259595 | 2201 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2202 | { |
2203 | const asymbol *s0 = syms[i - 1]; | |
2204 | const asymbol *s1 = syms[i]; | |
2205 | ||
2206 | if ((s0->value + s0->section->vma | |
2207 | != s1->value + s1->section->vma) | |
2208 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2209 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2210 | syms[j++] = syms[i]; | |
2211 | } | |
a5259595 AM |
2212 | symcount = j; |
2213 | } | |
699733f6 | 2214 | |
a5259595 AM |
2215 | i = 0; |
2216 | /* Note that here and in compare_symbols we can't compare opd and | |
2217 | sym->section directly. With separate debug info files, the | |
2218 | symbols will be extracted from the debug file while abfd passed | |
2219 | to this function is the real binary. */ | |
0ccf57bd | 2220 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
2221 | ++i; |
2222 | codesecsym = i; | |
2223 | ||
2224 | for (; i < symcount; ++i) | |
2225 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2226 | | SEC_THREAD_LOCAL)) | |
2227 | != (SEC_CODE | SEC_ALLOC)) | |
2228 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2229 | break; | |
2230 | codesecsymend = i; | |
2231 | ||
2232 | for (; i < symcount; ++i) | |
2233 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2234 | break; | |
2235 | secsymend = i; | |
2236 | ||
2237 | for (; i < symcount; ++i) | |
2238 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2239 | break; | |
2240 | opdsymend = i; | |
2241 | ||
2242 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2243 | if (((syms[i]->section->flags |
2244 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2245 | != (SEC_CODE | SEC_ALLOC)) |
2246 | break; | |
2247 | symcount = i; | |
2248 | } | |
c9727e01 | 2249 | count = 0; |
90e3cdf2 | 2250 | |
699733f6 | 2251 | if (relocatable) |
90e3cdf2 | 2252 | { |
699733f6 AM |
2253 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2254 | arelent *r; | |
2255 | size_t size; | |
0ccf57bd | 2256 | size_t relcount; |
90e3cdf2 | 2257 | |
468392fb AM |
2258 | if (opdsymend == secsymend) |
2259 | goto done; | |
2260 | ||
699733f6 | 2261 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2262 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2263 | if (relcount == 0) |
c9727e01 | 2264 | goto done; |
90e3cdf2 | 2265 | |
7356fed5 AM |
2266 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2267 | { | |
2268 | count = -1; | |
2269 | goto done; | |
2270 | } | |
2271 | ||
699733f6 | 2272 | size = 0; |
595da8c5 | 2273 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2274 | { |
2275 | asymbol *sym; | |
90e3cdf2 | 2276 | |
595da8c5 | 2277 | while (r < opd->relocation + relcount |
699733f6 AM |
2278 | && r->address < syms[i]->value + opd->vma) |
2279 | ++r; | |
90e3cdf2 | 2280 | |
595da8c5 | 2281 | if (r == opd->relocation + relcount) |
699733f6 | 2282 | break; |
90e3cdf2 | 2283 | |
699733f6 AM |
2284 | if (r->address != syms[i]->value + opd->vma) |
2285 | continue; | |
90e3cdf2 | 2286 | |
699733f6 AM |
2287 | if (r->howto->type != R_PPC64_ADDR64) |
2288 | continue; | |
90e3cdf2 | 2289 | |
699733f6 AM |
2290 | sym = *r->sym_ptr_ptr; |
2291 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2292 | sym->section->id, sym->value + r->addend)) | |
2293 | { | |
2294 | ++count; | |
2295 | size += sizeof (asymbol); | |
2296 | size += strlen (syms[i]->name) + 2; | |
2297 | } | |
2298 | } | |
90e3cdf2 | 2299 | |
c4b0b099 AM |
2300 | if (size == 0) |
2301 | goto done; | |
699733f6 AM |
2302 | s = *ret = bfd_malloc (size); |
2303 | if (s == NULL) | |
2304 | { | |
7356fed5 | 2305 | count = -1; |
c9727e01 | 2306 | goto done; |
699733f6 | 2307 | } |
90e3cdf2 | 2308 | |
699733f6 | 2309 | names = (char *) (s + count); |
90e3cdf2 | 2310 | |
595da8c5 | 2311 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2312 | { |
699733f6 | 2313 | asymbol *sym; |
90e3cdf2 | 2314 | |
595da8c5 | 2315 | while (r < opd->relocation + relcount |
699733f6 AM |
2316 | && r->address < syms[i]->value + opd->vma) |
2317 | ++r; | |
90e3cdf2 | 2318 | |
595da8c5 | 2319 | if (r == opd->relocation + relcount) |
699733f6 AM |
2320 | break; |
2321 | ||
2322 | if (r->address != syms[i]->value + opd->vma) | |
2323 | continue; | |
2324 | ||
2325 | if (r->howto->type != R_PPC64_ADDR64) | |
2326 | continue; | |
90e3cdf2 | 2327 | |
699733f6 AM |
2328 | sym = *r->sym_ptr_ptr; |
2329 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2330 | sym->section->id, sym->value + r->addend)) | |
2331 | { | |
2332 | size_t len; | |
2333 | ||
2334 | *s = *syms[i]; | |
6ba2a415 | 2335 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2336 | s->section = sym->section; |
2337 | s->value = sym->value + r->addend; | |
2338 | s->name = names; | |
2339 | *names++ = '.'; | |
2340 | len = strlen (syms[i]->name); | |
2341 | memcpy (names, syms[i]->name, len + 1); | |
2342 | names += len + 1; | |
6f610d07 UW |
2343 | /* Have udata.p point back to the original symbol this |
2344 | synthetic symbol was derived from. */ | |
2345 | s->udata.p = syms[i]; | |
699733f6 AM |
2346 | s++; |
2347 | } | |
2348 | } | |
2349 | } | |
2350 | else | |
90e3cdf2 | 2351 | { |
468392fb | 2352 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2353 | bfd_byte *contents = NULL; |
699733f6 | 2354 | size_t size; |
0ccf57bd | 2355 | size_t plt_count = 0; |
468392fb AM |
2356 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2357 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2358 | arelent *p; | |
90e3cdf2 | 2359 | |
ee67d69a | 2360 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2361 | { |
c4b0b099 AM |
2362 | free_contents_and_exit_err: |
2363 | count = -1; | |
ee67d69a | 2364 | free_contents_and_exit: |
699733f6 | 2365 | if (contents) |
ee67d69a | 2366 | free (contents); |
c9727e01 | 2367 | goto done; |
699733f6 | 2368 | } |
90e3cdf2 | 2369 | |
699733f6 AM |
2370 | size = 0; |
2371 | for (i = secsymend; i < opdsymend; ++i) | |
2372 | { | |
2373 | bfd_vma ent; | |
90e3cdf2 | 2374 | |
5ef11c02 AM |
2375 | /* Ignore bogus symbols. */ |
2376 | if (syms[i]->value > opd->size - 8) | |
2377 | continue; | |
2378 | ||
699733f6 AM |
2379 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2380 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2381 | { | |
2382 | ++count; | |
2383 | size += sizeof (asymbol); | |
2384 | size += strlen (syms[i]->name) + 2; | |
2385 | } | |
2386 | } | |
90e3cdf2 | 2387 | |
468392fb | 2388 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2389 | if (dyn_count != 0 |
2390 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2391 | { |
2392 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2393 | size_t extdynsize; | |
2394 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2395 | ||
2396 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2397 | goto free_contents_and_exit_err; |
468392fb AM |
2398 | |
2399 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2400 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2401 | ||
2402 | extdyn = dynbuf; | |
2403 | extdynend = extdyn + dynamic->size; | |
2404 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2405 | { | |
2406 | Elf_Internal_Dyn dyn; | |
2407 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2408 | ||
2409 | if (dyn.d_tag == DT_NULL) | |
2410 | break; | |
2411 | ||
2412 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2413 | { | |
9e390558 AM |
2414 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2415 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2416 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2417 | /* The .glink section usually does not survive the final |
2418 | link; search for the section (usually .text) where the | |
2419 | glink stubs now reside. */ | |
2420 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2421 | &glink_vma); | |
2422 | break; | |
2423 | } | |
2424 | } | |
2425 | ||
2426 | free (dynbuf); | |
2427 | } | |
2428 | ||
2429 | if (glink != NULL) | |
2430 | { | |
2431 | /* Determine __glink trampoline by reading the relative branch | |
2432 | from the first glink stub. */ | |
2433 | bfd_byte buf[4]; | |
b9e5796b AM |
2434 | unsigned int off = 0; |
2435 | ||
2436 | while (bfd_get_section_contents (abfd, glink, buf, | |
2437 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2438 | { |
2439 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2440 | insn ^= B_DOT; | |
2441 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2442 | { |
2cdcc330 AM |
2443 | resolv_vma |
2444 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2445 | break; |
2446 | } | |
2447 | off += 4; | |
2448 | if (off > 4) | |
2449 | break; | |
468392fb AM |
2450 | } |
2451 | ||
2452 | if (resolv_vma) | |
2453 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2454 | |
066ee829 AM |
2455 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2456 | if (relplt != NULL) | |
2457 | { | |
2458 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2459 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2460 | goto free_contents_and_exit_err; |
68ffbac6 | 2461 | |
066ee829 AM |
2462 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2463 | size += plt_count * sizeof (asymbol); | |
468392fb | 2464 | |
066ee829 AM |
2465 | p = relplt->relocation; |
2466 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2467 | { |
2468 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2469 | if (p->addend != 0) | |
2470 | size += sizeof ("+0x") - 1 + 16; | |
2471 | } | |
066ee829 | 2472 | } |
468392fb AM |
2473 | } |
2474 | ||
c4b0b099 AM |
2475 | if (size == 0) |
2476 | goto free_contents_and_exit; | |
699733f6 AM |
2477 | s = *ret = bfd_malloc (size); |
2478 | if (s == NULL) | |
c4b0b099 | 2479 | goto free_contents_and_exit_err; |
90e3cdf2 | 2480 | |
468392fb | 2481 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2482 | |
699733f6 | 2483 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2484 | { |
699733f6 | 2485 | bfd_vma ent; |
90e3cdf2 | 2486 | |
5ef11c02 AM |
2487 | if (syms[i]->value > opd->size - 8) |
2488 | continue; | |
2489 | ||
699733f6 AM |
2490 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2491 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2492 | { |
0ccf57bd | 2493 | size_t lo, hi; |
699733f6 | 2494 | size_t len; |
c9727e01 | 2495 | asection *sec = abfd->sections; |
90e3cdf2 | 2496 | |
699733f6 AM |
2497 | *s = *syms[i]; |
2498 | lo = codesecsym; | |
2499 | hi = codesecsymend; | |
2500 | while (lo < hi) | |
2501 | { | |
0ccf57bd | 2502 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2503 | if (syms[mid]->section->vma < ent) |
2504 | lo = mid + 1; | |
2505 | else if (syms[mid]->section->vma > ent) | |
2506 | hi = mid; | |
2507 | else | |
c9727e01 AM |
2508 | { |
2509 | sec = syms[mid]->section; | |
2510 | break; | |
2511 | } | |
699733f6 AM |
2512 | } |
2513 | ||
c9727e01 | 2514 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2515 | sec = syms[lo - 1]->section; |
699733f6 AM |
2516 | |
2517 | for (; sec != NULL; sec = sec->next) | |
2518 | { | |
2519 | if (sec->vma > ent) | |
2520 | break; | |
63524580 JK |
2521 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2522 | info file. */ | |
2523 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2524 | break; |
2525 | if ((sec->flags & SEC_CODE) != 0) | |
2526 | s->section = sec; | |
2527 | } | |
6ba2a415 | 2528 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2529 | s->value = ent - s->section->vma; |
2530 | s->name = names; | |
2531 | *names++ = '.'; | |
2532 | len = strlen (syms[i]->name); | |
2533 | memcpy (names, syms[i]->name, len + 1); | |
2534 | names += len + 1; | |
6f610d07 UW |
2535 | /* Have udata.p point back to the original symbol this |
2536 | synthetic symbol was derived from. */ | |
2537 | s->udata.p = syms[i]; | |
699733f6 | 2538 | s++; |
90e3cdf2 | 2539 | } |
90e3cdf2 | 2540 | } |
699733f6 | 2541 | free (contents); |
468392fb AM |
2542 | |
2543 | if (glink != NULL && relplt != NULL) | |
2544 | { | |
2545 | if (resolv_vma) | |
2546 | { | |
2547 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2548 | memset (s, 0, sizeof *s); |
468392fb | 2549 | s->the_bfd = abfd; |
6ba2a415 | 2550 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2551 | s->section = glink; |
2552 | s->value = resolv_vma - glink->vma; | |
2553 | s->name = names; | |
2cdcc330 AM |
2554 | memcpy (names, "__glink_PLTresolve", |
2555 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2556 | names += sizeof ("__glink_PLTresolve"); |
2557 | s++; | |
2558 | count++; | |
2559 | } | |
2560 | ||
2561 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2562 | stub rather than on the glink branch table entry. The | |
2563 | objdump disassembler would then use a sensible symbol | |
2564 | name on plt calls. The difficulty in doing so is | |
2565 | a) finding the stubs, and, | |
2566 | b) matching stubs against plt entries, and, | |
2567 | c) there can be multiple stubs for a given plt entry. | |
2568 | ||
2569 | Solving (a) could be done by code scanning, but older | |
2570 | ppc64 binaries used different stubs to current code. | |
2571 | (b) is the tricky one since you need to known the toc | |
2572 | pointer for at least one function that uses a pic stub to | |
2573 | be able to calculate the plt address referenced. | |
2574 | (c) means gdb would need to set multiple breakpoints (or | |
2575 | find the glink branch itself) when setting breakpoints | |
2576 | for pending shared library loads. */ | |
2577 | p = relplt->relocation; | |
2578 | for (i = 0; i < plt_count; i++, p++) | |
2579 | { | |
2580 | size_t len; | |
2581 | ||
2582 | *s = **p->sym_ptr_ptr; | |
2583 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2584 | we are defining a symbol, ensure one of them is set. */ | |
2585 | if ((s->flags & BSF_LOCAL) == 0) | |
2586 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2587 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2588 | s->section = glink; |
2589 | s->value = glink_vma - glink->vma; | |
2590 | s->name = names; | |
2591 | s->udata.p = NULL; | |
2592 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2593 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2594 | names += len; | |
e054468f AM |
2595 | if (p->addend != 0) |
2596 | { | |
2597 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2598 | names += sizeof ("+0x") - 1; | |
2599 | bfd_sprintf_vma (abfd, names, p->addend); | |
2600 | names += strlen (names); | |
2601 | } | |
468392fb AM |
2602 | memcpy (names, "@plt", sizeof ("@plt")); |
2603 | names += sizeof ("@plt"); | |
2604 | s++; | |
b9e5796b AM |
2605 | if (abi < 2) |
2606 | { | |
2607 | glink_vma += 8; | |
2608 | if (i >= 0x8000) | |
2609 | glink_vma += 4; | |
2610 | } | |
2611 | else | |
468392fb AM |
2612 | glink_vma += 4; |
2613 | } | |
2614 | count += plt_count; | |
2615 | } | |
90e3cdf2 JJ |
2616 | } |
2617 | ||
c9727e01 | 2618 | done: |
a7535cf3 | 2619 | free (syms); |
90e3cdf2 JJ |
2620 | return count; |
2621 | } | |
5bd4f169 | 2622 | \f |
65f38f15 AM |
2623 | /* The following functions are specific to the ELF linker, while |
2624 | functions above are used generally. Those named ppc64_elf_* are | |
2625 | called by the main ELF linker code. They appear in this file more | |
2626 | or less in the order in which they are called. eg. | |
2627 | ppc64_elf_check_relocs is called early in the link process, | |
2628 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2629 | called. |
2630 | ||
2631 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2632 | functions have both a function code symbol and a function descriptor | |
2633 | symbol. A call to foo in a relocatable object file looks like: | |
2634 | ||
2635 | . .text | |
2636 | . x: | |
2637 | . bl .foo | |
2638 | . nop | |
2639 | ||
2640 | The function definition in another object file might be: | |
2641 | ||
2642 | . .section .opd | |
2643 | . foo: .quad .foo | |
2644 | . .quad .TOC.@tocbase | |
2645 | . .quad 0 | |
2646 | . | |
2647 | . .text | |
2648 | . .foo: blr | |
2649 | ||
2650 | When the linker resolves the call during a static link, the branch | |
2651 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2652 | If the function definition is in a shared library, things are a little | |
2653 | different: The call goes via a plt call stub, the opd information gets | |
2654 | copied to the plt, and the linker patches the nop. | |
2655 | ||
2656 | . x: | |
2657 | . bl .foo_stub | |
2658 | . ld 2,40(1) | |
2659 | . | |
2660 | . | |
2661 | . .foo_stub: | |
71a39c98 AM |
2662 | . std 2,40(1) # in practice, the call stub |
2663 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2664 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2665 | . ld 12,0(11) | |
2666 | . ld 2,8(11) | |
2667 | . mtctr 12 | |
2668 | . ld 11,16(11) | |
e86ce104 AM |
2669 | . bctr |
2670 | . | |
2671 | . .section .plt | |
2672 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2673 | ||
2674 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2675 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2676 | copying. | |
2677 | ||
2678 | What are the difficulties here? Well, firstly, the relocations | |
2679 | examined by the linker in check_relocs are against the function code | |
2680 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2681 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2682 | to carefully copy dynamic link information from one symbol to the other. | |
2683 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2684 | symbol as is normal for most other backends. We need foo dynamic | |
2685 | instead, at least for an application final link. However, when | |
2686 | creating a shared library containing foo, we need to have both symbols | |
2687 | dynamic so that references to .foo are satisfied during the early | |
2688 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2689 | definition from some other object, eg. a static library. |
2690 | ||
2691 | Update: As of August 2004, we support a new convention. Function | |
2692 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2693 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2694 | |
7c8bbca5 AM |
2695 | /* Of those relocs that might be copied as dynamic relocs, this |
2696 | function selects those that must be copied when linking a shared | |
2697 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2698 | |
1d483afe AM |
2699 | static int |
2700 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2701 | enum elf_ppc64_reloc_type r_type) | |
2702 | { | |
2703 | switch (r_type) | |
2704 | { | |
2705 | default: | |
7c8bbca5 AM |
2706 | /* Only relative relocs can be resolved when the object load |
2707 | address isn't fixed. DTPREL64 is excluded because the | |
2708 | dynamic linker needs to differentiate global dynamic from | |
2709 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2710 | return 1; |
2711 | ||
2712 | case R_PPC64_REL32: | |
2713 | case R_PPC64_REL64: | |
2714 | case R_PPC64_REL30: | |
2715 | return 0; | |
2716 | ||
2717 | case R_PPC64_TPREL16: | |
2718 | case R_PPC64_TPREL16_LO: | |
2719 | case R_PPC64_TPREL16_HI: | |
2720 | case R_PPC64_TPREL16_HA: | |
2721 | case R_PPC64_TPREL16_DS: | |
2722 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2723 | case R_PPC64_TPREL16_HIGH: |
2724 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2725 | case R_PPC64_TPREL16_HIGHER: |
2726 | case R_PPC64_TPREL16_HIGHERA: | |
2727 | case R_PPC64_TPREL16_HIGHEST: | |
2728 | case R_PPC64_TPREL16_HIGHESTA: | |
2729 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
2730 | /* These relocations are relative but in a shared library the |
2731 | linker doesn't know the thread pointer base. */ | |
2732 | return bfd_link_dll (info); | |
1d483afe AM |
2733 | } |
2734 | } | |
65f38f15 | 2735 | |
f4656909 AM |
2736 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2737 | copying dynamic variables from a shared lib into an app's dynbss | |
2738 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
2739 | shared lib. With code that gcc generates, it's vital that this be |
2740 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
2741 | the address of a function descriptor, which resides in the .opd | |
2742 | section. gcc uses the descriptor directly rather than going via the | |
2743 | GOT as some other ABI's do, which means that initialized function | |
2744 | pointers must reference the descriptor. Thus, a function pointer | |
2745 | initialized to the address of a function in a shared library will | |
2746 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 2747 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
2748 | presents a problem as a plt entry for that function is also |
2749 | initialized from the function descriptor symbol and the copy reloc | |
2750 | may not be initialized first. */ | |
a23b6845 | 2751 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2752 | |
721956f4 | 2753 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2754 | string. */ |
2755 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2756 | |
2757 | /* Linker stubs. | |
2758 | ppc_stub_long_branch: | |
2759 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2760 | destination, but a 24 bit branch in a stub section will reach. | |
2761 | . b dest | |
2762 | ||
2763 | ppc_stub_plt_branch: | |
2764 | Similar to the above, but a 24 bit branch in the stub section won't | |
2765 | reach its destination. | |
71a39c98 AM |
2766 | . addis %r11,%r2,xxx@toc@ha |
2767 | . ld %r12,xxx@toc@l(%r11) | |
2768 | . mtctr %r12 | |
721956f4 AM |
2769 | . bctr |
2770 | ||
2771 | ppc_stub_plt_call: | |
2c66dc6c AM |
2772 | Used to call a function in a shared library. If it so happens that |
2773 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2774 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2775 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2776 | . addis %r11,%r2,xxx@toc@ha |
2777 | . ld %r12,xxx+0@toc@l(%r11) | |
2778 | . mtctr %r12 | |
2779 | . ld %r2,xxx+8@toc@l(%r11) | |
2780 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2781 | . bctr |
ad8e1ba5 AM |
2782 | |
2783 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2784 | code to adjust the value and save r2 to support multiple toc sections. | |
2785 | A ppc_stub_long_branch with an r2 offset looks like: | |
2786 | . std %r2,40(%r1) | |
2787 | . addis %r2,%r2,off@ha | |
2788 | . addi %r2,%r2,off@l | |
2789 | . b dest | |
2790 | ||
2791 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2792 | . std %r2,40(%r1) | |
71a39c98 AM |
2793 | . addis %r11,%r2,xxx@toc@ha |
2794 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
2795 | . addis %r2,%r2,off@ha |
2796 | . addi %r2,%r2,off@l | |
71a39c98 | 2797 | . mtctr %r12 |
ad8e1ba5 | 2798 | . bctr |
ac2df442 | 2799 | |
05d0e962 AM |
2800 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2801 | variants exist too, simpler for plt calls since a new toc pointer | |
2802 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2803 | has some more complex stubs to handle calls marked with NOTOC | |
2804 | relocs from functions where r2 is not a valid toc pointer. These | |
2805 | come in two flavours, the ones shown below, and _both variants that | |
2806 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2807 | one call is from a function where r2 is used as the toc pointer but | |
2808 | needs a toc adjusting stub for small-model multi-toc, and another | |
2809 | call is from a function where r2 is not valid. | |
2810 | ppc_stub_long_branch_notoc: | |
2811 | . mflr %r12 | |
2812 | . bcl 20,31,1f | |
2813 | . 1: | |
2814 | . mflr %r11 | |
2815 | . mtlr %r12 | |
2cdcc330 AM |
2816 | . addis %r12,%r11,dest-1b@ha |
2817 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2818 | . b dest |
2819 | ||
2820 | ppc_stub_plt_branch_notoc: | |
2821 | . mflr %r12 | |
2822 | . bcl 20,31,1f | |
2823 | . 1: | |
2824 | . mflr %r11 | |
2825 | . mtlr %r12 | |
2826 | . lis %r12,xxx-1b@highest | |
f891966f | 2827 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2828 | . sldi %r12,%r12,32 |
f891966f | 2829 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2830 | . ori %r12,%r12,xxx-1b@l |
2831 | . add %r12,%r11,%r12 | |
2832 | . mtctr %r12 | |
2833 | . bctr | |
2834 | ||
2835 | ppc_stub_plt_call_notoc: | |
2836 | . mflr %r12 | |
2837 | . bcl 20,31,1f | |
2838 | . 1: | |
2839 | . mflr %r11 | |
2840 | . mtlr %r12 | |
2841 | . lis %r12,xxx-1b@highest | |
f891966f | 2842 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2843 | . sldi %r12,%r12,32 |
f891966f | 2844 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2845 | . ori %r12,%r12,xxx-1b@l |
2846 | . ldx %r12,%r11,%r12 | |
2847 | . mtctr %r12 | |
2848 | . bctr | |
2849 | ||
04bdff6a AM |
2850 | There are also ELFv1 powerxx variants of these stubs. |
2851 | ppc_stub_long_branch_notoc: | |
d4b87b1e | 2852 | . pla %r12,dest@pcrel |
04bdff6a AM |
2853 | . b dest |
2854 | ppc_stub_plt_branch_notoc: | |
2855 | . lis %r11,(dest-1f)@highesta34 | |
2856 | . ori %r11,%r11,(dest-1f)@highera34 | |
2857 | . sldi %r11,%r11,34 | |
d4b87b1e | 2858 | . 1: pla %r12,dest@pcrel |
04bdff6a AM |
2859 | . add %r12,%r11,%r12 |
2860 | . mtctr %r12 | |
2861 | . bctr | |
2862 | ppc_stub_plt_call_notoc: | |
2863 | . lis %r11,(xxx-1f)@highesta34 | |
2864 | . ori %r11,%r11,(xxx-1f)@highera34 | |
2865 | . sldi %r11,%r11,34 | |
d4b87b1e | 2866 | . 1: pla %r12,xxx@pcrel |
04bdff6a AM |
2867 | . ldx %r12,%r11,%r12 |
2868 | . mtctr %r12 | |
2869 | . bctr | |
2870 | ||
05d0e962 AM |
2871 | In cases where the high instructions would add zero, they are |
2872 | omitted and following instructions modified in some cases. | |
04bdff6a AM |
2873 | For example, a powerxx ppc_stub_plt_call_notoc might simplify down |
2874 | to | |
2875 | . pld %r12,xxx@pcrel | |
2876 | . mtctr %r12 | |
2877 | . bctr | |
05d0e962 AM |
2878 | |
2879 | For a given stub group (a set of sections all using the same toc | |
2880 | pointer value) there will be just one stub type used for any | |
2881 | particular function symbol. For example, if printf is called from | |
2882 | code with the tocsave optimization (ie. r2 saved in function | |
2883 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2884 | and from other code without the tocsave optimization requiring a | |
2885 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2886 | type will be created. Calls with the tocsave optimization will | |
2887 | enter this stub after the instruction saving r2. A similar | |
2888 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2889 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2890 | to call an external function like printf. If other calls to printf | |
2891 | require a ppc_stub_plt_call linkage stub then a single | |
2892 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2893 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2894 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2895 | be created and calls not requiring r2 to be saved will enter the | |
2896 | stub after the r2 save instruction. There is an analogous | |
2897 | hierarchy of long branch and plt branch stubs for local call | |
2898 | linkage. */ | |
721956f4 | 2899 | |
2cdcc330 AM |
2900 | enum ppc_stub_type |
2901 | { | |
721956f4 AM |
2902 | ppc_stub_none, |
2903 | ppc_stub_long_branch, | |
ad8e1ba5 | 2904 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2905 | ppc_stub_long_branch_notoc, |
2906 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2907 | ppc_stub_plt_branch, |
ad8e1ba5 | 2908 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
2909 | ppc_stub_plt_branch_notoc, |
2910 | ppc_stub_plt_branch_both, | |
794e51c0 | 2911 | ppc_stub_plt_call, |
7341d5e2 | 2912 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
2913 | ppc_stub_plt_call_notoc, |
2914 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
2915 | ppc_stub_global_entry, |
2916 | ppc_stub_save_res | |
721956f4 AM |
2917 | }; |
2918 | ||
6f20ed8a AM |
2919 | /* Information on stub grouping. */ |
2920 | struct map_stub | |
2921 | { | |
2922 | /* The stub section. */ | |
2923 | asection *stub_sec; | |
2924 | /* This is the section to which stubs in the group will be attached. */ | |
2925 | asection *link_sec; | |
a4b6fadd AM |
2926 | /* Next group. */ |
2927 | struct map_stub *next; | |
2928 | /* Whether to emit a copy of register save/restore functions in this | |
2929 | group. */ | |
2930 | int needs_save_res; | |
df136d64 AM |
2931 | /* Current offset within stubs after the insn restoring lr in a |
2932 | _notoc or _both stub using bcl for pc-relative addressing, or | |
2933 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
2934 | unsigned int lr_restore; | |
2935 | /* Accumulated size of EH info emitted to describe return address | |
2936 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
2937 | unsigned int eh_size; | |
2938 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
2939 | unsigned int eh_base; | |
6f20ed8a AM |
2940 | }; |
2941 | ||
2cdcc330 AM |
2942 | struct ppc_stub_hash_entry |
2943 | { | |
721956f4 AM |
2944 | /* Base hash table entry structure. */ |
2945 | struct bfd_hash_entry root; | |
2946 | ||
ad8e1ba5 AM |
2947 | enum ppc_stub_type stub_type; |
2948 | ||
6f20ed8a AM |
2949 | /* Group information. */ |
2950 | struct map_stub *group; | |
721956f4 AM |
2951 | |
2952 | /* Offset within stub_sec of the beginning of this stub. */ | |
2953 | bfd_vma stub_offset; | |
2954 | ||
2955 | /* Given the symbol's value and its section we can determine its final | |
2956 | value when building the stubs (so the stub knows where to jump. */ | |
2957 | bfd_vma target_value; | |
2958 | asection *target_section; | |
2959 | ||
721956f4 AM |
2960 | /* The symbol table entry, if any, that this was derived from. */ |
2961 | struct ppc_link_hash_entry *h; | |
e054468f | 2962 | struct plt_entry *plt_ent; |
721956f4 | 2963 | |
2d7ad24e AM |
2964 | /* Symbol type. */ |
2965 | unsigned char symtype; | |
2966 | ||
6911b7dc AM |
2967 | /* Symbol st_other. */ |
2968 | unsigned char other; | |
721956f4 AM |
2969 | }; |
2970 | ||
2cdcc330 AM |
2971 | struct ppc_branch_hash_entry |
2972 | { | |
721956f4 AM |
2973 | /* Base hash table entry structure. */ |
2974 | struct bfd_hash_entry root; | |
2975 | ||
c456f082 | 2976 | /* Offset within branch lookup table. */ |
721956f4 AM |
2977 | unsigned int offset; |
2978 | ||
2979 | /* Generation marker. */ | |
2980 | unsigned int iter; | |
2981 | }; | |
65f38f15 | 2982 | |
19e08130 AM |
2983 | /* Used to track dynamic relocations for local symbols. */ |
2984 | struct ppc_dyn_relocs | |
2985 | { | |
2986 | struct ppc_dyn_relocs *next; | |
2987 | ||
2988 | /* The input section of the reloc. */ | |
2989 | asection *sec; | |
2990 | ||
2991 | /* Total number of relocs copied for the input section. */ | |
2992 | unsigned int count : 31; | |
2993 | ||
2994 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
2995 | unsigned int ifunc : 1; | |
2996 | }; | |
2997 | ||
65f38f15 AM |
2998 | struct ppc_link_hash_entry |
2999 | { | |
3000 | struct elf_link_hash_entry elf; | |
3001 | ||
2cdcc330 AM |
3002 | union |
3003 | { | |
b3fac117 AM |
3004 | /* A pointer to the most recently used stub hash entry against this |
3005 | symbol. */ | |
3006 | struct ppc_stub_hash_entry *stub_cache; | |
3007 | ||
3008 | /* A pointer to the next symbol starting with a '.' */ | |
3009 | struct ppc_link_hash_entry *next_dot_sym; | |
3010 | } u; | |
721956f4 | 3011 | |
65f38f15 | 3012 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3013 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3014 | |
721956f4 | 3015 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3016 | struct ppc_link_hash_entry *oh; |
721956f4 | 3017 | |
e86ce104 AM |
3018 | /* Flag function code and descriptor symbols. */ |
3019 | unsigned int is_func:1; | |
3020 | unsigned int is_func_descriptor:1; | |
908b32fc | 3021 | unsigned int fake:1; |
411e1bfb | 3022 | |
c5614fa4 AM |
3023 | /* Whether global opd/toc sym has been adjusted or not. |
3024 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3025 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3026 | unsigned int adjust_done:1; |
3027 | ||
a4b6fadd AM |
3028 | /* Set if this is an out-of-line register save/restore function, |
3029 | with non-standard calling convention. */ | |
3030 | unsigned int save_res:1; | |
3031 | ||
8b5f1ed8 AM |
3032 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3033 | even when the duplicate symbol does not provide a definition. */ | |
3034 | unsigned int non_zero_localentry:1; | |
3035 | ||
411e1bfb | 3036 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3037 | Bits are or'd into the mask as the corresponding relocs are |
3038 | encountered during check_relocs, with TLS_TLS being set when any | |
3039 | of the other TLS bits are set. tls_optimize clears bits when | |
3040 | optimizing to indicate the corresponding GOT entry type is not | |
3041 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
3042 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
3043 | separate flag rather than setting TPREL just for convenience in | |
3044 | distinguishing the two cases. | |
3045 | These flags are also kept for local symbols. */ | |
3046 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3047 | #define TLS_GD 2 /* GD reloc. */ | |
3048 | #define TLS_LD 4 /* LD reloc. */ | |
3049 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3050 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3051 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 3052 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 3053 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 3054 | unsigned char tls_mask; |
37da22e5 AM |
3055 | |
3056 | /* The above field is also used to mark function symbols. In which | |
3057 | case TLS_TLS will be 0. */ | |
3058 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3059 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3060 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3061 | }; |
3062 | ||
3063 | /* ppc64 ELF linker hash table. */ | |
3064 | ||
3065 | struct ppc_link_hash_table | |
3066 | { | |
3067 | struct elf_link_hash_table elf; | |
3068 | ||
721956f4 AM |
3069 | /* The stub hash table. */ |
3070 | struct bfd_hash_table stub_hash_table; | |
3071 | ||
3072 | /* Another hash table for plt_branch stubs. */ | |
3073 | struct bfd_hash_table branch_hash_table; | |
3074 | ||
3b421ab3 AM |
3075 | /* Hash table for function prologue tocsave. */ |
3076 | htab_t tocsave_htab; | |
3077 | ||
e7d1c40c AM |
3078 | /* Various options and other info passed from the linker. */ |
3079 | struct ppc64_elf_params *params; | |
721956f4 | 3080 | |
6f20ed8a AM |
3081 | /* The size of sec_info below. */ |
3082 | unsigned int sec_info_arr_size; | |
3083 | ||
3084 | /* Per-section array of extra section info. Done this way rather | |
3085 | than as part of ppc64_elf_section_data so we have the info for | |
3086 | non-ppc64 sections. */ | |
3087 | struct | |
3088 | { | |
3089 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3090 | bfd_vma toc_off; |
6f20ed8a AM |
3091 | |
3092 | union | |
3093 | { | |
3094 | /* The section group that this section belongs to. */ | |
3095 | struct map_stub *group; | |
3096 | /* A temp section list pointer. */ | |
3097 | asection *list; | |
3098 | } u; | |
3099 | } *sec_info; | |
721956f4 | 3100 | |
a4b6fadd AM |
3101 | /* Linked list of groups. */ |
3102 | struct map_stub *group; | |
3103 | ||
ad8e1ba5 AM |
3104 | /* Temp used when calculating TOC pointers. */ |
3105 | bfd_vma toc_curr; | |
bf102f86 AM |
3106 | bfd *toc_bfd; |
3107 | asection *toc_first_sec; | |
ad8e1ba5 | 3108 | |
b3fac117 AM |
3109 | /* Used when adding symbols. */ |
3110 | struct ppc_link_hash_entry *dot_syms; | |
3111 | ||
33e44f2e | 3112 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3113 | asection *glink; |
9e390558 | 3114 | asection *global_entry; |
82bd7b59 | 3115 | asection *sfpr; |
2d7ad24e AM |
3116 | asection *pltlocal; |
3117 | asection *relpltlocal; | |
4ce794b7 AM |
3118 | asection *brlt; |
3119 | asection *relbrlt; | |
58d180e8 | 3120 | asection *glink_eh_frame; |
ec338859 | 3121 | |
8387904d AM |
3122 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3123 | struct ppc_link_hash_entry *tls_get_addr; | |
3124 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3125 | |
927be08e AM |
3126 | /* The size of reliplt used by got entry relocs. */ |
3127 | bfd_size_type got_reli_size; | |
3128 | ||
9b5ecbd0 | 3129 | /* Statistics. */ |
7341d5e2 | 3130 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3131 | |
ee75fd95 AM |
3132 | /* Number of stubs against global syms. */ |
3133 | unsigned long stub_globals; | |
3134 | ||
ee67d69a AM |
3135 | /* Set if we're linking code with function descriptors. */ |
3136 | unsigned int opd_abi:1; | |
3137 | ||
4c52953f | 3138 | /* Support for multiple toc sections. */ |
33c0ec9d | 3139 | unsigned int do_multi_toc:1; |
4c52953f | 3140 | unsigned int multi_toc_needed:1; |
927be08e | 3141 | unsigned int second_toc_pass:1; |
67f0cbdb | 3142 | unsigned int do_toc_opt:1; |
4c52953f | 3143 | |
9a23f96e AM |
3144 | /* Set if tls optimization is enabled. */ |
3145 | unsigned int do_tls_opt:1; | |
3146 | ||
3e04d765 AM |
3147 | /* Set if inline plt calls should be converted to direct calls. */ |
3148 | unsigned int can_convert_all_inline_plt:1; | |
3149 | ||
5d1634d7 | 3150 | /* Set on error. */ |
99877b66 | 3151 | unsigned int stub_error:1; |
721956f4 | 3152 | |
8c5b4e52 AM |
3153 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3154 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3155 | |
82e66161 AM |
3156 | /* Whether there exist local gnu indirect function resolvers, |
3157 | referenced by dynamic relocations. */ | |
3158 | unsigned int local_ifunc_resolver:1; | |
3159 | unsigned int maybe_local_ifunc_resolver:1; | |
3160 | ||
f378ab09 AM |
3161 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3162 | unsigned int has_plt_localentry0:1; | |
3163 | ||
5663e321 AM |
3164 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3165 | unsigned int notoc_plt:1; | |
3166 | ||
04bdff6a AM |
3167 | /* Whether to use powerxx instructions in linkage stubs. */ |
3168 | unsigned int powerxx_stubs:1; | |
3169 | ||
721956f4 AM |
3170 | /* Incremented every time we size stubs. */ |
3171 | unsigned int stub_iteration; | |
5d1634d7 | 3172 | |
87d72d41 AM |
3173 | /* Small local sym cache. */ |
3174 | struct sym_cache sym_cache; | |
65f38f15 AM |
3175 | }; |
3176 | ||
4c52953f AM |
3177 | /* Rename some of the generic section flags to better document how they |
3178 | are used here. */ | |
b0dddeec AM |
3179 | |
3180 | /* Nonzero if this section has TLS related relocations. */ | |
3181 | #define has_tls_reloc sec_flg0 | |
3182 | ||
23cedd1d | 3183 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
3184 | #define has_tls_get_addr_call sec_flg1 |
3185 | ||
3186 | /* Nonzero if this section has any toc or got relocs. */ | |
3187 | #define has_toc_reloc sec_flg2 | |
3188 | ||
3189 | /* Nonzero if this section has a call to another section that uses | |
3190 | the toc or got. */ | |
d77c8a4b | 3191 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3192 | |
3193 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3194 | #define call_check_in_progress sec_flg4 |
70cc837d | 3195 | #define call_check_done sec_flg5 |
4c52953f | 3196 | |
65f38f15 AM |
3197 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3198 | ||
3199 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3200 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3201 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3202 | |
721956f4 AM |
3203 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3204 | ((struct ppc_stub_hash_entry *) \ | |
3205 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3206 | ||
3207 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3208 | ((struct ppc_branch_hash_entry *) \ | |
3209 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3210 | ||
3211 | /* Create an entry in the stub hash table. */ | |
3212 | ||
3213 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3214 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3215 | struct bfd_hash_table *table, | |
3216 | const char *string) | |
721956f4 AM |
3217 | { |
3218 | /* Allocate the structure if it has not already been allocated by a | |
3219 | subclass. */ | |
3220 | if (entry == NULL) | |
3221 | { | |
3222 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3223 | if (entry == NULL) | |
3224 | return entry; | |
3225 | } | |
3226 | ||
3227 | /* Call the allocation method of the superclass. */ | |
3228 | entry = bfd_hash_newfunc (entry, table, string); | |
3229 | if (entry != NULL) | |
3230 | { | |
3231 | struct ppc_stub_hash_entry *eh; | |
3232 | ||
3233 | /* Initialize the local fields. */ | |
3234 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3235 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3236 | eh->group = NULL; |
721956f4 AM |
3237 | eh->stub_offset = 0; |
3238 | eh->target_value = 0; | |
3239 | eh->target_section = NULL; | |
721956f4 | 3240 | eh->h = NULL; |
6911b7dc | 3241 | eh->plt_ent = NULL; |
6911b7dc | 3242 | eh->other = 0; |
721956f4 AM |
3243 | } |
3244 | ||
3245 | return entry; | |
3246 | } | |
3247 | ||
3248 | /* Create an entry in the branch hash table. */ | |
3249 | ||
3250 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3251 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3252 | struct bfd_hash_table *table, | |
3253 | const char *string) | |
721956f4 AM |
3254 | { |
3255 | /* Allocate the structure if it has not already been allocated by a | |
3256 | subclass. */ | |
3257 | if (entry == NULL) | |
3258 | { | |
3259 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3260 | if (entry == NULL) | |
3261 | return entry; | |
3262 | } | |
3263 | ||
3264 | /* Call the allocation method of the superclass. */ | |
3265 | entry = bfd_hash_newfunc (entry, table, string); | |
3266 | if (entry != NULL) | |
3267 | { | |
3268 | struct ppc_branch_hash_entry *eh; | |
3269 | ||
3270 | /* Initialize the local fields. */ | |
3271 | eh = (struct ppc_branch_hash_entry *) entry; | |
3272 | eh->offset = 0; | |
3273 | eh->iter = 0; | |
3274 | } | |
3275 | ||
3276 | return entry; | |
3277 | } | |
3278 | ||
65f38f15 AM |
3279 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3280 | ||
3281 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3282 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3283 | struct bfd_hash_table *table, | |
3284 | const char *string) | |
65f38f15 AM |
3285 | { |
3286 | /* Allocate the structure if it has not already been allocated by a | |
3287 | subclass. */ | |
3288 | if (entry == NULL) | |
3289 | { | |
3290 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3291 | if (entry == NULL) | |
3292 | return entry; | |
3293 | } | |
3294 | ||
3295 | /* Call the allocation method of the superclass. */ | |
3296 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3297 | if (entry != NULL) | |
3298 | { | |
3299 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3300 | ||
b3fac117 | 3301 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3302 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3303 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3304 | ||
3305 | /* When making function calls, old ABI code references function entry | |
3306 | points (dot symbols), while new ABI code references the function | |
3307 | descriptor symbol. We need to make any combination of reference and | |
3308 | definition work together, without breaking archive linking. | |
3309 | ||
3310 | For a defined function "foo" and an undefined call to "bar": | |
3311 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3312 | "bar" too). | |
3313 | A new object defines "foo" and references "bar". | |
3314 | ||
3315 | A new object thus has no problem with its undefined symbols being | |
3316 | satisfied by definitions in an old object. On the other hand, the | |
3317 | old object won't have ".bar" satisfied by a new object. | |
3318 | ||
3319 | Keep a list of newly added dot-symbols. */ | |
3320 | ||
3321 | if (string[0] == '.') | |
3322 | { | |
3323 | struct ppc_link_hash_table *htab; | |
3324 | ||
3325 | htab = (struct ppc_link_hash_table *) table; | |
3326 | eh->u.next_dot_sym = htab->dot_syms; | |
3327 | htab->dot_syms = eh; | |
3328 | } | |
65f38f15 AM |
3329 | } |
3330 | ||
3331 | return entry; | |
3332 | } | |
3333 | ||
2cdcc330 AM |
3334 | struct tocsave_entry |
3335 | { | |
3b421ab3 AM |
3336 | asection *sec; |
3337 | bfd_vma offset; | |
3338 | }; | |
3339 | ||
3340 | static hashval_t | |
3341 | tocsave_htab_hash (const void *p) | |
3342 | { | |
3343 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3344 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3345 | } |
3346 | ||
3347 | static int | |
3348 | tocsave_htab_eq (const void *p1, const void *p2) | |
3349 | { | |
3350 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3351 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3352 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3353 | } | |
3354 | ||
68faa637 AM |
3355 | /* Destroy a ppc64 ELF linker hash table. */ |
3356 | ||
3357 | static void | |
d495ab0d | 3358 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3359 | { |
d495ab0d | 3360 | struct ppc_link_hash_table *htab; |
68faa637 | 3361 | |
d495ab0d | 3362 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3363 | if (htab->tocsave_htab) |
3364 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3365 | bfd_hash_table_free (&htab->branch_hash_table); |
3366 | bfd_hash_table_free (&htab->stub_hash_table); | |
3367 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3368 | } |
3369 | ||
65f38f15 AM |
3370 | /* Create a ppc64 ELF linker hash table. */ |
3371 | ||
3372 | static struct bfd_link_hash_table * | |
4ce794b7 | 3373 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3374 | { |
3375 | struct ppc_link_hash_table *htab; | |
3376 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3377 | ||
4ce794b7 | 3378 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3379 | if (htab == NULL) |
3380 | return NULL; | |
3381 | ||
66eb6687 | 3382 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3383 | sizeof (struct ppc_link_hash_entry), |
3384 | PPC64_ELF_DATA)) | |
65f38f15 | 3385 | { |
e2d34d7d | 3386 | free (htab); |
65f38f15 AM |
3387 | return NULL; |
3388 | } | |
3389 | ||
721956f4 | 3390 | /* Init the stub hash table too. */ |
66eb6687 AM |
3391 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3392 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3393 | { |
d495ab0d | 3394 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3395 | return NULL; |
3396 | } | |
721956f4 AM |
3397 | |
3398 | /* And the branch hash table. */ | |
66eb6687 AM |
3399 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3400 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3401 | { |
3402 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3403 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3404 | return NULL; |
3405 | } | |
721956f4 | 3406 | |
3b421ab3 AM |
3407 | htab->tocsave_htab = htab_try_create (1024, |
3408 | tocsave_htab_hash, | |
3409 | tocsave_htab_eq, | |
3410 | NULL); | |
3411 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3412 | { |
d495ab0d | 3413 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3414 | return NULL; |
3415 | } | |
d495ab0d | 3416 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3417 | |
3254fd24 AM |
3418 | /* Initializing two fields of the union is just cosmetic. We really |
3419 | only care about glist, but when compiled on a 32-bit host the | |
3420 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3421 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3422 | htab->elf.init_got_refcount.refcount = 0; |
3423 | htab->elf.init_got_refcount.glist = NULL; | |
3424 | htab->elf.init_plt_refcount.refcount = 0; | |
3425 | htab->elf.init_plt_refcount.glist = NULL; | |
3426 | htab->elf.init_got_offset.offset = 0; | |
3427 | htab->elf.init_got_offset.glist = NULL; | |
3428 | htab->elf.init_plt_offset.offset = 0; | |
3429 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3430 | |
65f38f15 AM |
3431 | return &htab->elf.root; |
3432 | } | |
3433 | ||
bfeb4a28 AM |
3434 | /* Create sections for linker generated code. */ |
3435 | ||
3436 | static bfd_boolean | |
3437 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3438 | { | |
3439 | struct ppc_link_hash_table *htab; | |
3440 | flagword flags; | |
3441 | ||
3442 | htab = ppc_hash_table (info); | |
3443 | ||
bfeb4a28 AM |
3444 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3445 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3446 | if (htab->params->save_restore_funcs) |
3447 | { | |
3448 | /* Create .sfpr for code to save and restore fp regs. */ | |
3449 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3450 | flags); | |
3451 | if (htab->sfpr == NULL | |
2cdcc330 | 3452 | || !bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b32547cd AM |
3453 | return FALSE; |
3454 | } | |
3455 | ||
3456 | if (bfd_link_relocatable (info)) | |
3457 | return TRUE; | |
bfeb4a28 AM |
3458 | |
3459 | /* Create .glink for lazy dynamic linking support. */ | |
3460 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3461 | flags); | |
3462 | if (htab->glink == NULL | |
2cdcc330 | 3463 | || !bfd_set_section_alignment (dynobj, htab->glink, 3)) |
bfeb4a28 AM |
3464 | return FALSE; |
3465 | ||
9e390558 AM |
3466 | /* The part of .glink used by global entry stubs, separate so that |
3467 | it can be aligned appropriately without affecting htab->glink. */ | |
3468 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3469 | flags); | |
3470 | if (htab->global_entry == NULL | |
2cdcc330 | 3471 | || !bfd_set_section_alignment (dynobj, htab->global_entry, 2)) |
9e390558 AM |
3472 | return FALSE; |
3473 | ||
bfeb4a28 AM |
3474 | if (!info->no_ld_generated_unwind_info) |
3475 | { | |
3476 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3477 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3478 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3479 | ".eh_frame", | |
3480 | flags); | |
3481 | if (htab->glink_eh_frame == NULL | |
3482 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
3483 | return FALSE; | |
3484 | } | |
3485 | ||
3486 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3487 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3488 | if (htab->elf.iplt == NULL | |
2cdcc330 | 3489 | || !bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) |
bfeb4a28 AM |
3490 | return FALSE; |
3491 | ||
3492 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3493 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3494 | htab->elf.irelplt |
3495 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3496 | if (htab->elf.irelplt == NULL | |
2cdcc330 | 3497 | || !bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3498 | return FALSE; |
3499 | ||
3500 | /* Create branch lookup table for plt_branch stubs. */ | |
3501 | flags = (SEC_ALLOC | SEC_LOAD | |
3502 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3503 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3504 | flags); | |
3505 | if (htab->brlt == NULL | |
2cdcc330 | 3506 | || !bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
bfeb4a28 AM |
3507 | return FALSE; |
3508 | ||
2d7ad24e AM |
3509 | /* Local plt entries, put in .branch_lt but a separate section for |
3510 | convenience. */ | |
3511 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3512 | flags); | |
3513 | if (htab->pltlocal == NULL | |
2cdcc330 | 3514 | || !bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) |
2d7ad24e AM |
3515 | return FALSE; |
3516 | ||
0e1862bb | 3517 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3518 | return TRUE; |
3519 | ||
3520 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3521 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3522 | htab->relbrlt |
3523 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3524 | if (htab->relbrlt == NULL |
2cdcc330 | 3525 | || !bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
bfeb4a28 AM |
3526 | return FALSE; |
3527 | ||
2d7ad24e AM |
3528 | htab->relpltlocal |
3529 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3530 | if (htab->relpltlocal == NULL | |
2cdcc330 | 3531 | || !bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) |
2d7ad24e AM |
3532 | return FALSE; |
3533 | ||
bfeb4a28 AM |
3534 | return TRUE; |
3535 | } | |
3536 | ||
e717da7e AM |
3537 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3538 | ||
bfeb4a28 | 3539 | bfd_boolean |
e7d1c40c AM |
3540 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3541 | struct ppc64_elf_params *params) | |
e717da7e AM |
3542 | { |
3543 | struct ppc_link_hash_table *htab; | |
3544 | ||
e7d1c40c | 3545 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3546 | |
3547 | /* Always hook our dynamic sections into the first bfd, which is the | |
3548 | linker created stub bfd. This ensures that the GOT header is at | |
3549 | the start of the output TOC section. */ | |
3550 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3551 | htab->elf.dynobj = params->stub_bfd; |
3552 | htab->params = params; | |
bfeb4a28 | 3553 | |
bfeb4a28 | 3554 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3555 | } |
3556 | ||
721956f4 AM |
3557 | /* Build a name for an entry in the stub hash table. */ |
3558 | ||
3559 | static char * | |
4ce794b7 AM |
3560 | ppc_stub_name (const asection *input_section, |
3561 | const asection *sym_sec, | |
3562 | const struct ppc_link_hash_entry *h, | |
3563 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3564 | { |
3565 | char *stub_name; | |
bcaa2f82 | 3566 | ssize_t len; |
721956f4 AM |
3567 | |
3568 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3569 | offsets from a sym as a branch target? In fact, we could | |
3570 | probably assume the addend is always zero. */ | |
3571 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3572 | ||
3573 | if (h) | |
3574 | { | |
3575 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3576 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3577 | if (stub_name == NULL) |
3578 | return stub_name; | |
3579 | ||
bcaa2f82 AM |
3580 | len = sprintf (stub_name, "%08x.%s+%x", |
3581 | input_section->id & 0xffffffff, | |
3582 | h->elf.root.root.string, | |
3583 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3584 | } |
3585 | else | |
3586 | { | |
ad8e1ba5 | 3587 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3588 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3589 | if (stub_name == NULL) |
3590 | return stub_name; | |
3591 | ||
bcaa2f82 AM |
3592 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3593 | input_section->id & 0xffffffff, | |
3594 | sym_sec->id & 0xffffffff, | |
3595 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3596 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3597 | } |
bcaa2f82 | 3598 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3599 | stub_name[len - 2] = 0; |
721956f4 AM |
3600 | return stub_name; |
3601 | } | |
3602 | ||
3603 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3604 | creating the stub name takes a bit of time. */ | |
3605 | ||
3606 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3607 | ppc_get_stub_entry (const asection *input_section, |
3608 | const asection *sym_sec, | |
039b3fef | 3609 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3610 | const Elf_Internal_Rela *rel, |
3611 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3612 | { |
3613 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3614 | struct map_stub *group; |
721956f4 AM |
3615 | |
3616 | /* If this input section is part of a group of sections sharing one | |
3617 | stub section, then use the id of the first section in the group. | |
3618 | Stub names need to include a section id, as there may well be | |
3619 | more than one stub used to reach say, printf, and we need to | |
3620 | distinguish between them. */ | |
6f20ed8a | 3621 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3622 | if (group == NULL) |
3623 | return NULL; | |
721956f4 | 3624 | |
b3fac117 AM |
3625 | if (h != NULL && h->u.stub_cache != NULL |
3626 | && h->u.stub_cache->h == h | |
6f20ed8a | 3627 | && h->u.stub_cache->group == group) |
721956f4 | 3628 | { |
b3fac117 | 3629 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3630 | } |
3631 | else | |
3632 | { | |
3633 | char *stub_name; | |
3634 | ||
6f20ed8a | 3635 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3636 | if (stub_name == NULL) |
3637 | return NULL; | |
3638 | ||
3639 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3640 | stub_name, FALSE, FALSE); |
721956f4 | 3641 | if (h != NULL) |
b3fac117 | 3642 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3643 | |
3644 | free (stub_name); | |
3645 | } | |
3646 | ||
3647 | return stub_entry; | |
3648 | } | |
3649 | ||
3650 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3651 | stub entry are initialised. */ | |
3652 | ||
3653 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3654 | ppc_add_stub (const char *stub_name, |
3655 | asection *section, | |
25f53a85 | 3656 | struct bfd_link_info *info) |
721956f4 | 3657 | { |
25f53a85 | 3658 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3659 | struct map_stub *group; |
721956f4 AM |
3660 | asection *link_sec; |
3661 | asection *stub_sec; | |
3662 | struct ppc_stub_hash_entry *stub_entry; | |
3663 | ||
6f20ed8a AM |
3664 | group = htab->sec_info[section->id].u.group; |
3665 | link_sec = group->link_sec; | |
3666 | stub_sec = group->stub_sec; | |
721956f4 AM |
3667 | if (stub_sec == NULL) |
3668 | { | |
6f20ed8a AM |
3669 | size_t namelen; |
3670 | bfd_size_type len; | |
3671 | char *s_name; | |
721956f4 | 3672 | |
6f20ed8a AM |
3673 | namelen = strlen (link_sec->name); |
3674 | len = namelen + sizeof (STUB_SUFFIX); | |
3675 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3676 | if (s_name == NULL) | |
3677 | return NULL; | |
721956f4 | 3678 | |
6f20ed8a AM |
3679 | memcpy (s_name, link_sec->name, namelen); |
3680 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3681 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3682 | if (stub_sec == NULL) | |
3683 | return NULL; | |
3684 | group->stub_sec = stub_sec; | |
721956f4 AM |
3685 | } |
3686 | ||
3687 | /* Enter this entry into the linker stub hash table. */ | |
3688 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3689 | TRUE, FALSE); |
721956f4 AM |
3690 | if (stub_entry == NULL) |
3691 | { | |
695344c0 | 3692 | /* xgettext:c-format */ |
cf97bcb0 AM |
3693 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3694 | section->owner, stub_name); | |
721956f4 AM |
3695 | return NULL; |
3696 | } | |
3697 | ||
6f20ed8a | 3698 | stub_entry->group = group; |
721956f4 | 3699 | stub_entry->stub_offset = 0; |
721956f4 AM |
3700 | return stub_entry; |
3701 | } | |
3702 | ||
e717da7e AM |
3703 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3704 | not already done. */ | |
65f38f15 | 3705 | |
b34976b6 | 3706 | static bfd_boolean |
e717da7e | 3707 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3708 | { |
e717da7e AM |
3709 | asection *got, *relgot; |
3710 | flagword flags; | |
3711 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3712 | |
0c8d6e5c | 3713 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3714 | return FALSE; |
4dfe6ac6 NC |
3715 | if (htab == NULL) |
3716 | return FALSE; | |
0ffa91dd | 3717 | |
33e44f2e AM |
3718 | if (!htab->elf.sgot |
3719 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3720 | return FALSE; | |
e717da7e AM |
3721 | |
3722 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3723 | | SEC_LINKER_CREATED); | |
3724 | ||
c456f082 | 3725 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3726 | if (!got |
e717da7e AM |
3727 | || !bfd_set_section_alignment (abfd, got, 3)) |
3728 | return FALSE; | |
65f38f15 | 3729 | |
c456f082 AM |
3730 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3731 | flags | SEC_READONLY); | |
e717da7e | 3732 | if (!relgot |
2cdcc330 | 3733 | || !bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3734 | return FALSE; |
e717da7e AM |
3735 | |
3736 | ppc64_elf_tdata (abfd)->got = got; | |
3737 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3738 | return TRUE; |
65f38f15 | 3739 | } |
5bd4f169 | 3740 | |
b31867b6 AM |
3741 | /* Follow indirect and warning symbol links. */ |
3742 | ||
3743 | static inline struct bfd_link_hash_entry * | |
3744 | follow_link (struct bfd_link_hash_entry *h) | |
3745 | { | |
3746 | while (h->type == bfd_link_hash_indirect | |
3747 | || h->type == bfd_link_hash_warning) | |
3748 | h = h->u.i.link; | |
3749 | return h; | |
3750 | } | |
3751 | ||
3752 | static inline struct elf_link_hash_entry * | |
3753 | elf_follow_link (struct elf_link_hash_entry *h) | |
3754 | { | |
3755 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3756 | } | |
3757 | ||
3758 | static inline struct ppc_link_hash_entry * | |
3759 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3760 | { | |
3761 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
3762 | } | |
3763 | ||
40d16e0b AM |
3764 | /* Merge PLT info on FROM with that on TO. */ |
3765 | ||
3766 | static void | |
3767 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3768 | struct ppc_link_hash_entry *to) | |
3769 | { | |
3770 | if (from->elf.plt.plist != NULL) | |
3771 | { | |
3772 | if (to->elf.plt.plist != NULL) | |
3773 | { | |
3774 | struct plt_entry **entp; | |
3775 | struct plt_entry *ent; | |
3776 | ||
3777 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3778 | { | |
3779 | struct plt_entry *dent; | |
3780 | ||
3781 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3782 | if (dent->addend == ent->addend) | |
3783 | { | |
3784 | dent->plt.refcount += ent->plt.refcount; | |
3785 | *entp = ent->next; | |
3786 | break; | |
3787 | } | |
3788 | if (dent == NULL) | |
3789 | entp = &ent->next; | |
3790 | } | |
3791 | *entp = to->elf.plt.plist; | |
3792 | } | |
3793 | ||
3794 | to->elf.plt.plist = from->elf.plt.plist; | |
3795 | from->elf.plt.plist = NULL; | |
3796 | } | |
3797 | } | |
3798 | ||
65f38f15 AM |
3799 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3800 | ||
3801 | static void | |
fcfa13d2 AM |
3802 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3803 | struct elf_link_hash_entry *dir, | |
3804 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3805 | { |
3806 | struct ppc_link_hash_entry *edir, *eind; | |
3807 | ||
3808 | edir = (struct ppc_link_hash_entry *) dir; | |
3809 | eind = (struct ppc_link_hash_entry *) ind; | |
3810 | ||
c79d6685 AM |
3811 | edir->is_func |= eind->is_func; |
3812 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3813 | edir->tls_mask |= eind->tls_mask; | |
3814 | if (eind->oh != NULL) | |
3815 | edir->oh = ppc_follow_link (eind->oh); | |
3816 | ||
474436e6 | 3817 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3818 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3819 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3820 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3821 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3822 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3823 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3824 | |
d311bc8b AM |
3825 | /* If we were called to copy over info for a weak sym, don't copy |
3826 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3827 | in order to simplify readonly_dynrelocs and save a field in the | |
3828 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3829 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3830 | are then tested. */ |
d311bc8b | 3831 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3832 | return; |
d311bc8b | 3833 | |
411e1bfb | 3834 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3835 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3836 | { |
bbd7ec4a AM |
3837 | if (edir->dyn_relocs != NULL) |
3838 | { | |
6061a67d AM |
3839 | struct elf_dyn_relocs **pp; |
3840 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3841 | |
fcfa13d2 | 3842 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3843 | list. Merge any entries against the same section. */ |
3844 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3845 | { | |
6061a67d | 3846 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
3847 | |
3848 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3849 | if (q->sec == p->sec) | |
3850 | { | |
3851 | q->pc_count += p->pc_count; | |
3852 | q->count += p->count; | |
3853 | *pp = p->next; | |
3854 | break; | |
3855 | } | |
3856 | if (q == NULL) | |
3857 | pp = &p->next; | |
3858 | } | |
3859 | *pp = edir->dyn_relocs; | |
3860 | } | |
3861 | ||
65f38f15 AM |
3862 | edir->dyn_relocs = eind->dyn_relocs; |
3863 | eind->dyn_relocs = NULL; | |
3864 | } | |
65f38f15 | 3865 | |
81848ca0 AM |
3866 | /* Copy over got entries that we may have already seen to the |
3867 | symbol which just became indirect. */ | |
411e1bfb AM |
3868 | if (eind->elf.got.glist != NULL) |
3869 | { | |
3870 | if (edir->elf.got.glist != NULL) | |
3871 | { | |
3872 | struct got_entry **entp; | |
3873 | struct got_entry *ent; | |
3874 | ||
3875 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3876 | { | |
3877 | struct got_entry *dent; | |
3878 | ||
3879 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3880 | if (dent->addend == ent->addend | |
e717da7e | 3881 | && dent->owner == ent->owner |
411e1bfb AM |
3882 | && dent->tls_type == ent->tls_type) |
3883 | { | |
3884 | dent->got.refcount += ent->got.refcount; | |
3885 | *entp = ent->next; | |
3886 | break; | |
3887 | } | |
3888 | if (dent == NULL) | |
3889 | entp = &ent->next; | |
3890 | } | |
3891 | *entp = edir->elf.got.glist; | |
3892 | } | |
3893 | ||
3894 | edir->elf.got.glist = eind->elf.got.glist; | |
3895 | eind->elf.got.glist = NULL; | |
3896 | } | |
3897 | ||
3898 | /* And plt entries. */ | |
40d16e0b | 3899 | move_plt_plist (eind, edir); |
411e1bfb | 3900 | |
fcfa13d2 | 3901 | if (eind->elf.dynindx != -1) |
411e1bfb | 3902 | { |
fcfa13d2 AM |
3903 | if (edir->elf.dynindx != -1) |
3904 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3905 | edir->elf.dynstr_index); | |
411e1bfb AM |
3906 | edir->elf.dynindx = eind->elf.dynindx; |
3907 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3908 | eind->elf.dynindx = -1; | |
3909 | eind->elf.dynstr_index = 0; | |
3910 | } | |
411e1bfb AM |
3911 | } |
3912 | ||
8387904d AM |
3913 | /* Find the function descriptor hash entry from the given function code |
3914 | hash entry FH. Link the entries via their OH fields. */ | |
3915 | ||
3916 | static struct ppc_link_hash_entry * | |
b31867b6 | 3917 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
3918 | { |
3919 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3920 | ||
3921 | if (fdh == NULL) | |
3922 | { | |
3923 | const char *fd_name = fh->elf.root.root.string + 1; | |
3924 | ||
3925 | fdh = (struct ppc_link_hash_entry *) | |
3926 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
3927 | if (fdh == NULL) |
3928 | return fdh; | |
3929 | ||
3930 | fdh->is_func_descriptor = 1; | |
3931 | fdh->oh = fh; | |
3932 | fh->is_func = 1; | |
3933 | fh->oh = fdh; | |
8387904d AM |
3934 | } |
3935 | ||
8c5b4e52 AM |
3936 | fdh = ppc_follow_link (fdh); |
3937 | fdh->is_func_descriptor = 1; | |
3938 | fdh->oh = fh; | |
3939 | return fdh; | |
8387904d AM |
3940 | } |
3941 | ||
8c5b4e52 | 3942 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
3943 | |
3944 | static struct ppc_link_hash_entry * | |
3945 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 3946 | struct ppc_link_hash_entry *fh) |
bb700d78 | 3947 | { |
8c5b4e52 AM |
3948 | bfd *abfd = fh->elf.root.u.undef.abfd; |
3949 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 3950 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
3951 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
3952 | ? BSF_WEAK | |
3953 | : BSF_GLOBAL); | |
3954 | ||
3955 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
3956 | fh->elf.root.root.string + 1, | |
3957 | flags, bfd_und_section_ptr, 0, | |
3958 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
3959 | return NULL; |
3960 | ||
3961 | fdh = (struct ppc_link_hash_entry *) bh; | |
3962 | fdh->elf.non_elf = 0; | |
908b32fc AM |
3963 | fdh->fake = 1; |
3964 | fdh->is_func_descriptor = 1; | |
3965 | fdh->oh = fh; | |
3966 | fh->is_func = 1; | |
3967 | fh->oh = fdh; | |
bb700d78 AM |
3968 | return fdh; |
3969 | } | |
3970 | ||
8387904d AM |
3971 | /* Fix function descriptor symbols defined in .opd sections to be |
3972 | function type. */ | |
555cd476 AM |
3973 | |
3974 | static bfd_boolean | |
c16153ae | 3975 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 3976 | struct bfd_link_info *info, |
555cd476 | 3977 | Elf_Internal_Sym *isym, |
6911b7dc | 3978 | const char **name, |
555cd476 AM |
3979 | flagword *flags ATTRIBUTE_UNUSED, |
3980 | asection **sec, | |
b53dfeb2 | 3981 | bfd_vma *value) |
555cd476 | 3982 | { |
b53dfeb2 | 3983 | if (*sec != NULL |
f1885d1e | 3984 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
3985 | { |
3986 | asection *code_sec; | |
3987 | ||
3988 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
3989 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
3990 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
3991 | ||
3992 | /* If the symbol is a function defined in .opd, and the function | |
3993 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 3994 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
3995 | && (*sec)->reloc_count != 0 |
3996 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
3997 | FALSE) != (bfd_vma) -1 | |
3998 | && discarded_section (code_sec)) | |
3999 | { | |
4000 | *sec = bfd_und_section_ptr; | |
4001 | isym->st_shndx = SHN_UNDEF; | |
4002 | } | |
4003 | } | |
dbd1e97e AM |
4004 | else if (*sec != NULL |
4005 | && strcmp ((*sec)->name, ".toc") == 0 | |
4006 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4007 | { | |
4008 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4009 | if (htab != NULL) | |
4010 | htab->params->object_in_toc = 1; | |
4011 | } | |
433817dd | 4012 | |
6911b7dc AM |
4013 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4014 | { | |
4015 | if (abiversion (ibfd) == 0) | |
4016 | set_abiversion (ibfd, 2); | |
4017 | else if (abiversion (ibfd) == 1) | |
4018 | { | |
cf97bcb0 AM |
4019 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4020 | " for ABI version 1"), *name); | |
6911b7dc AM |
4021 | bfd_set_error (bfd_error_bad_value); |
4022 | return FALSE; | |
4023 | } | |
4024 | } | |
4025 | ||
555cd476 AM |
4026 | return TRUE; |
4027 | } | |
4028 | ||
6911b7dc AM |
4029 | /* Merge non-visibility st_other attributes: local entry point. */ |
4030 | ||
4031 | static void | |
4032 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4033 | const Elf_Internal_Sym *isym, | |
4034 | bfd_boolean definition, | |
4035 | bfd_boolean dynamic) | |
4036 | { | |
f378ab09 | 4037 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
4038 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
4039 | | ELF_ST_VISIBILITY (h->other)); | |
4040 | } | |
4041 | ||
8c5b4e52 AM |
4042 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4043 | we now have a real symbol. */ | |
4044 | ||
4045 | static bfd_boolean | |
4046 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 4047 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
4048 | asection **psec ATTRIBUTE_UNUSED, |
4049 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
4050 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
4051 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
4052 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4053 | { | |
4054 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
4055 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4056 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
4057 | return TRUE; |
4058 | } | |
4059 | ||
8387904d | 4060 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4061 | inclusion of a new ABI object archive that defines "bar". |
4062 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4063 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4064 | |
4065 | static struct elf_link_hash_entry * | |
4066 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4067 | struct bfd_link_info *info, | |
4068 | const char *name) | |
4069 | { | |
4070 | struct elf_link_hash_entry *h; | |
4071 | char *dot_name; | |
4072 | size_t len; | |
4073 | ||
4074 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4075 | if (h != NULL |
4076 | /* Don't return this sym if it is a fake function descriptor | |
4077 | created by add_symbol_adjust. */ | |
8c5b4e52 | 4078 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
4079 | return h; |
4080 | ||
4081 | if (name[0] == '.') | |
4082 | return h; | |
4083 | ||
4084 | len = strlen (name); | |
4085 | dot_name = bfd_alloc (abfd, len + 2); | |
4086 | if (dot_name == NULL) | |
e99955cd | 4087 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
4088 | dot_name[0] = '.'; |
4089 | memcpy (dot_name + 1, name, len + 1); | |
4090 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4091 | bfd_release (abfd, dot_name); | |
4092 | return h; | |
4093 | } | |
4094 | ||
4095 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4096 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4097 | are made weak. This stops later archive searches from including an | |
4098 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4099 | prevents the linker complaining about undefined symbols. |
4100 | We also check and correct mismatched symbol visibility here. The | |
4101 | most restrictive visibility of the function descriptor and the | |
4102 | function entry symbol is used. */ | |
8387904d AM |
4103 | |
4104 | static bfd_boolean | |
b3fac117 | 4105 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4106 | { |
8387904d AM |
4107 | struct ppc_link_hash_table *htab; |
4108 | struct ppc_link_hash_entry *fdh; | |
4109 | ||
b3fac117 AM |
4110 | if (eh->elf.root.type == bfd_link_hash_warning) |
4111 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4112 | |
8400d40d AM |
4113 | if (eh->elf.root.type == bfd_link_hash_indirect) |
4114 | return TRUE; | |
4115 | ||
b3fac117 AM |
4116 | if (eh->elf.root.root.string[0] != '.') |
4117 | abort (); | |
8387904d | 4118 | |
b3fac117 | 4119 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4120 | if (htab == NULL) |
4121 | return FALSE; | |
4122 | ||
b31867b6 | 4123 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4124 | if (fdh == NULL |
4125 | && !bfd_link_relocatable (info) | |
4126 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4127 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4128 | && eh->elf.ref_regular) | |
4129 | { | |
4130 | /* Make an undefined function descriptor sym, in order to | |
4131 | pull in an --as-needed shared lib. Archives are handled | |
4132 | elsewhere. */ | |
4133 | fdh = make_fdh (info, eh); | |
4134 | if (fdh == NULL) | |
4135 | return FALSE; | |
bb700d78 | 4136 | } |
8c5b4e52 AM |
4137 | |
4138 | if (fdh != NULL) | |
8387904d | 4139 | { |
35b0ce59 AM |
4140 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4141 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4142 | |
4143 | /* Make both descriptor and entry symbol have the most | |
4144 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4145 | if (entry_vis < descr_vis) |
4146 | fdh->elf.other += entry_vis - descr_vis; | |
4147 | else if (entry_vis > descr_vis) | |
4148 | eh->elf.other += descr_vis - entry_vis; | |
4149 | ||
8c5b4e52 AM |
4150 | /* Propagate reference flags from entry symbol to function |
4151 | descriptor symbol. */ | |
bc4e12de | 4152 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4153 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4154 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4155 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4156 | ||
4157 | if (!fdh->elf.forced_local | |
4158 | && fdh->elf.dynindx == -1 | |
4159 | && fdh->elf.versioned != versioned_hidden | |
4160 | && (bfd_link_dll (info) | |
4161 | || fdh->elf.def_dynamic | |
4162 | || fdh->elf.ref_dynamic) | |
4163 | && (eh->elf.ref_regular | |
4164 | || eh->elf.def_regular)) | |
4165 | { | |
2cdcc330 | 4166 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 4167 | return FALSE; |
35b0ce59 | 4168 | } |
8387904d | 4169 | } |
99877b66 | 4170 | |
8387904d AM |
4171 | return TRUE; |
4172 | } | |
4173 | ||
f6c7c3e8 AM |
4174 | /* Set up opd section info and abiversion for IBFD, and process list |
4175 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4176 | |
8387904d | 4177 | static bfd_boolean |
f6c7c3e8 | 4178 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4179 | { |
99877b66 | 4180 | struct ppc_link_hash_table *htab; |
b3fac117 | 4181 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4182 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4183 | |
459609d6 | 4184 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4185 | { |
b9399fcf AM |
4186 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4187 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4188 | ||
459609d6 AM |
4189 | if (abiversion (ibfd) == 0) |
4190 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4191 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4192 | { |
695344c0 | 4193 | /* xgettext:c-format */ |
cf97bcb0 AM |
4194 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4195 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4196 | bfd_set_error (bfd_error_bad_value); |
4197 | return FALSE; | |
f6c7c3e8 | 4198 | } |
b9399fcf | 4199 | } |
f6c7c3e8 | 4200 | |
b9399fcf AM |
4201 | if (is_ppc64_elf (info->output_bfd)) |
4202 | { | |
4203 | /* For input files without an explicit abiversion in e_flags | |
4204 | we should have flagged any with symbol st_other bits set | |
4205 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4206 | Set the output abiversion if not yet set, and for any input | |
4207 | still ambiguous, take its abiversion from the output. | |
4208 | Differences in ABI are reported later. */ | |
4209 | if (abiversion (info->output_bfd) == 0) | |
4210 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4211 | else if (abiversion (ibfd) == 0) | |
4212 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4213 | } |
4214 | ||
459609d6 AM |
4215 | htab = ppc_hash_table (info); |
4216 | if (htab == NULL) | |
b9399fcf | 4217 | return TRUE; |
459609d6 | 4218 | |
b9399fcf AM |
4219 | if (opd != NULL && opd->size != 0 |
4220 | && (ibfd->flags & DYNAMIC) == 0 | |
4221 | && (opd->flags & SEC_RELOC) != 0 | |
4222 | && opd->reloc_count != 0 | |
4223 | && !bfd_is_abs_section (opd->output_section) | |
4224 | && info->gc_sections) | |
4225 | { | |
4226 | /* Garbage collection needs some extra help with .opd sections. | |
4227 | We don't want to necessarily keep everything referenced by | |
4228 | relocs in .opd, as that would keep all functions. Instead, | |
4229 | if we reference an .opd symbol (a function descriptor), we | |
4230 | want to keep the function code symbol's section. This is | |
4231 | easy for global symbols, but for local syms we need to keep | |
4232 | information about the associated function section. */ | |
4233 | bfd_size_type amt; | |
4234 | asection **opd_sym_map; | |
4235 | Elf_Internal_Shdr *symtab_hdr; | |
4236 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4237 | ||
4238 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4239 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4240 | if (opd_sym_map == NULL) | |
4241 | return FALSE; | |
4242 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4243 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4244 | info->keep_memory); | |
4245 | if (relocs == NULL) | |
4246 | return FALSE; | |
4247 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4248 | rel_end = relocs + opd->reloc_count - 1; | |
4249 | for (rel = relocs; rel < rel_end; rel++) | |
4250 | { | |
4251 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4252 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4253 | ||
4254 | if (r_type == R_PPC64_ADDR64 | |
4255 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4256 | && r_symndx < symtab_hdr->sh_info) | |
4257 | { | |
4258 | Elf_Internal_Sym *isym; | |
4259 | asection *s; | |
4260 | ||
4261 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
4262 | if (isym == NULL) | |
4263 | { | |
4264 | if (elf_section_data (opd)->relocs != relocs) | |
4265 | free (relocs); | |
4266 | return FALSE; | |
4267 | } | |
4268 | ||
4269 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4270 | if (s != NULL && s != opd) | |
4271 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4272 | } | |
4273 | } | |
4274 | if (elf_section_data (opd)->relocs != relocs) | |
4275 | free (relocs); | |
4276 | } | |
459609d6 AM |
4277 | |
4278 | p = &htab->dot_syms; | |
4279 | while ((eh = *p) != NULL) | |
4280 | { | |
4281 | *p = NULL; | |
4282 | if (&eh->elf == htab->elf.hgot) | |
4283 | ; | |
4284 | else if (htab->elf.hgot == NULL | |
4285 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4286 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4287 | else if (abiversion (ibfd) <= 1) |
4288 | { | |
4289 | htab->need_func_desc_adj = 1; | |
4290 | if (!add_symbol_adjust (eh, info)) | |
4291 | return FALSE; | |
4292 | } | |
459609d6 AM |
4293 | p = &eh->u.next_dot_sym; |
4294 | } | |
b3fac117 | 4295 | return TRUE; |
8387904d AM |
4296 | } |
4297 | ||
97fed1c9 JJ |
4298 | /* Undo hash table changes when an --as-needed input file is determined |
4299 | not to be needed. */ | |
4300 | ||
4301 | static bfd_boolean | |
e5034e59 AM |
4302 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4303 | struct bfd_link_info *info, | |
4304 | enum notice_asneeded_action act) | |
97fed1c9 | 4305 | { |
e5034e59 AM |
4306 | if (act == notice_not_needed) |
4307 | { | |
4308 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4309 | |
e5034e59 AM |
4310 | if (htab == NULL) |
4311 | return FALSE; | |
4dfe6ac6 | 4312 | |
e5034e59 AM |
4313 | htab->dot_syms = NULL; |
4314 | } | |
4315 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4316 | } |
4317 | ||
aa374f67 AM |
4318 | /* If --just-symbols against a final linked binary, then assume we need |
4319 | toc adjusting stubs when calling functions defined there. */ | |
4320 | ||
4321 | static void | |
4322 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4323 | { | |
4324 | if ((sec->flags & SEC_CODE) != 0 | |
4325 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4326 | && is_ppc64_elf (sec->owner)) | |
4327 | { | |
2c3f079f AM |
4328 | if (abiversion (sec->owner) >= 2 |
4329 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4330 | sec->has_toc_reloc = 1; |
4331 | } | |
4332 | _bfd_elf_link_just_syms (sec, info); | |
4333 | } | |
4334 | ||
e054468f | 4335 | static struct plt_entry ** |
4ce794b7 AM |
4336 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4337 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4338 | { |
4339 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4340 | struct plt_entry **local_plt; |
f961d9dd | 4341 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4342 | |
4343 | if (local_got_ents == NULL) | |
4344 | { | |
4345 | bfd_size_type size = symtab_hdr->sh_info; | |
4346 | ||
e054468f AM |
4347 | size *= (sizeof (*local_got_ents) |
4348 | + sizeof (*local_plt) | |
4349 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4350 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4351 | if (local_got_ents == NULL) |
e054468f | 4352 | return NULL; |
411e1bfb AM |
4353 | elf_local_got_ents (abfd) = local_got_ents; |
4354 | } | |
4355 | ||
37da22e5 | 4356 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4357 | { |
4358 | struct got_entry *ent; | |
4359 | ||
4360 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4361 | if (ent->addend == r_addend |
4362 | && ent->owner == abfd | |
4363 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4364 | break; |
4365 | if (ent == NULL) | |
4366 | { | |
4367 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4368 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4369 | if (ent == NULL) |
4370 | return FALSE; | |
4371 | ent->next = local_got_ents[r_symndx]; | |
4372 | ent->addend = r_addend; | |
e717da7e | 4373 | ent->owner = abfd; |
411e1bfb | 4374 | ent->tls_type = tls_type; |
927be08e | 4375 | ent->is_indirect = FALSE; |
411e1bfb AM |
4376 | ent->got.refcount = 0; |
4377 | local_got_ents[r_symndx] = ent; | |
4378 | } | |
4379 | ent->got.refcount += 1; | |
4380 | } | |
4381 | ||
e054468f | 4382 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4383 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4384 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4385 | |
4386 | return local_plt + r_symndx; | |
65f38f15 AM |
4387 | } |
4388 | ||
411e1bfb | 4389 | static bfd_boolean |
e054468f | 4390 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4391 | { |
411e1bfb | 4392 | struct plt_entry *ent; |
1e2f5b6e | 4393 | |
e054468f | 4394 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4395 | if (ent->addend == addend) |
4396 | break; | |
4397 | if (ent == NULL) | |
1e2f5b6e | 4398 | { |
411e1bfb | 4399 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4400 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4401 | if (ent == NULL) |
4402 | return FALSE; | |
e054468f | 4403 | ent->next = *plist; |
411e1bfb AM |
4404 | ent->addend = addend; |
4405 | ent->plt.refcount = 0; | |
e054468f | 4406 | *plist = ent; |
1e2f5b6e | 4407 | } |
411e1bfb | 4408 | ent->plt.refcount += 1; |
b34976b6 | 4409 | return TRUE; |
1e2f5b6e AM |
4410 | } |
4411 | ||
e054468f AM |
4412 | static bfd_boolean |
4413 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4414 | { | |
4415 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4416 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4417 | || r_type == R_PPC64_REL14 |
4418 | || r_type == R_PPC64_REL14_BRTAKEN | |
4419 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4420 | || r_type == R_PPC64_ADDR24 | |
4421 | || r_type == R_PPC64_ADDR14 | |
4422 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4423 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4424 | || r_type == R_PPC64_PLTCALL |
4425 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4426 | } |
4427 | ||
4428 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4429 | ||
4430 | static bfd_boolean | |
4431 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4432 | { | |
4433 | return (r_type == R_PPC64_PLT16_HA | |
4434 | || r_type == R_PPC64_PLT16_HI | |
4435 | || r_type == R_PPC64_PLT16_LO | |
4436 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4437 | || r_type == R_PPC64_PLT_PCREL34 |
4438 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4439 | || r_type == R_PPC64_PLTSEQ | |
4440 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4441 | } |
4442 | ||
5bd4f169 | 4443 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4444 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4445 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4446 | |
b34976b6 | 4447 | static bfd_boolean |
4ce794b7 AM |
4448 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4449 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4450 | { |
65f38f15 | 4451 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4452 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4453 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4454 | const Elf_Internal_Rela *rel; |
4455 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4456 | asection *sreloc; |
3a71aa26 | 4457 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4458 | bfd_boolean is_opd; |
5bd4f169 | 4459 | |
0e1862bb | 4460 | if (bfd_link_relocatable (info)) |
b34976b6 | 4461 | return TRUE; |
5bd4f169 | 4462 | |
680a3378 AM |
4463 | /* Don't do anything special with non-loaded, non-alloced sections. |
4464 | In particular, any relocs in such sections should not affect GOT | |
4465 | and PLT reference counting (ie. we don't allow them to create GOT | |
4466 | or PLT entries), there's no possibility or desire to optimize TLS | |
4467 | relocs, and there's not much point in propagating relocs to shared | |
4468 | libs that the dynamic linker won't relocate. */ | |
4469 | if ((sec->flags & SEC_ALLOC) == 0) | |
4470 | return TRUE; | |
4471 | ||
0c8d6e5c | 4472 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4473 | |
65f38f15 | 4474 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4475 | if (htab == NULL) |
4476 | return FALSE; | |
4477 | ||
3a71aa26 AM |
4478 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4479 | FALSE, FALSE, TRUE); | |
4480 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4481 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4482 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4483 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4484 | sreloc = NULL; |
b9399fcf | 4485 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4486 | rel_end = relocs + sec->reloc_count; |
4487 | for (rel = relocs; rel < rel_end; rel++) | |
4488 | { | |
4489 | unsigned long r_symndx; | |
4490 | struct elf_link_hash_entry *h; | |
04c9666a | 4491 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4492 | int tls_type; |
7c8fe5c4 | 4493 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4494 | struct plt_entry **ifunc, **plt_list; |
5663e321 | 4495 | bfd_vma sym_addend; |
5bd4f169 AM |
4496 | |
4497 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4498 | if (r_symndx < symtab_hdr->sh_info) | |
4499 | h = NULL; | |
4500 | else | |
973a3492 L |
4501 | { |
4502 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4503 | h = elf_follow_link (h); |
1c865ab2 AM |
4504 | |
4505 | if (h == htab->elf.hgot) | |
4506 | sec->has_toc_reloc = 1; | |
973a3492 | 4507 | } |
5bd4f169 | 4508 | |
727fc41e | 4509 | tls_type = 0; |
e054468f | 4510 | ifunc = NULL; |
5663e321 AM |
4511 | r_type = ELF64_R_TYPE (rel->r_info); |
4512 | switch (r_type) | |
4513 | { | |
04bdff6a AM |
4514 | case R_PPC64_D34: |
4515 | case R_PPC64_D34_LO: | |
4516 | case R_PPC64_D34_HI30: | |
4517 | case R_PPC64_D34_HA30: | |
4518 | case R_PPC64_D28: | |
4519 | htab->powerxx_stubs = 1; | |
4520 | /* Fall through. */ | |
5663e321 AM |
4521 | default: |
4522 | /* Somewhat foolishly, because the ABIs don't specifically | |
4523 | allow it, ppc64 gas and ld support GOT and PLT relocs | |
4524 | with non-zero addends where the addend results in | |
4525 | sym+addend being stored in the GOT or PLT entry. This | |
4526 | can't be supported for pcrel relocs because the addend is | |
4527 | used to specify the pcrel offset. */ | |
4528 | sym_addend = rel->r_addend; | |
4529 | break; | |
04bdff6a AM |
4530 | |
4531 | case R_PPC64_PCREL34: | |
5663e321 AM |
4532 | case R_PPC64_GOT_PCREL34: |
4533 | case R_PPC64_PLT_PCREL34: | |
4534 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a AM |
4535 | case R_PPC64_PCREL28: |
4536 | htab->powerxx_stubs = 1; | |
5663e321 AM |
4537 | sym_addend = 0; |
4538 | break; | |
4539 | } | |
25f23106 AM |
4540 | if (h != NULL) |
4541 | { | |
4542 | if (h->type == STT_GNU_IFUNC) | |
4543 | { | |
4544 | h->needs_plt = 1; | |
4545 | ifunc = &h->plt.plist; | |
4546 | } | |
4547 | } | |
4548 | else | |
4549 | { | |
4550 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4551 | abfd, r_symndx); | |
4552 | if (isym == NULL) | |
4553 | return FALSE; | |
4554 | ||
4555 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4556 | { | |
4557 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5663e321 | 4558 | sym_addend, |
37da22e5 | 4559 | NON_GOT | PLT_IFUNC); |
25f23106 AM |
4560 | if (ifunc == NULL) |
4561 | return FALSE; | |
4562 | } | |
4563 | } | |
727fc41e | 4564 | |
a33d1f77 | 4565 | switch (r_type) |
5bd4f169 | 4566 | { |
727fc41e AM |
4567 | case R_PPC64_TLSGD: |
4568 | case R_PPC64_TLSLD: | |
4569 | /* These special tls relocs tie a call to __tls_get_addr with | |
4570 | its parameter symbol. */ | |
37da22e5 AM |
4571 | if (h != NULL) |
4572 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
4573 | else | |
4574 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5663e321 | 4575 | sym_addend, |
37da22e5 AM |
4576 | NON_GOT | TLS_TLS | TLS_MARK)) |
4577 | return FALSE; | |
4578 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4579 | break; |
4580 | ||
411e1bfb AM |
4581 | case R_PPC64_GOT_TLSLD16: |
4582 | case R_PPC64_GOT_TLSLD16_LO: | |
4583 | case R_PPC64_GOT_TLSLD16_HI: | |
4584 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4585 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4586 | goto dogottls; |
4587 | ||
4588 | case R_PPC64_GOT_TLSGD16: | |
4589 | case R_PPC64_GOT_TLSGD16_LO: | |
4590 | case R_PPC64_GOT_TLSGD16_HI: | |
4591 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4592 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4593 | goto dogottls; |
4594 | ||
4595 | case R_PPC64_GOT_TPREL16_DS: | |
4596 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4597 | case R_PPC64_GOT_TPREL16_HI: | |
4598 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 4599 | if (bfd_link_dll (info)) |
411e1bfb AM |
4600 | info->flags |= DF_STATIC_TLS; |
4601 | tls_type = TLS_TLS | TLS_TPREL; | |
4602 | goto dogottls; | |
4603 | ||
4604 | case R_PPC64_GOT_DTPREL16_DS: | |
4605 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4606 | case R_PPC64_GOT_DTPREL16_HI: | |
4607 | case R_PPC64_GOT_DTPREL16_HA: | |
4608 | tls_type = TLS_TLS | TLS_DTPREL; | |
4609 | dogottls: | |
4610 | sec->has_tls_reloc = 1; | |
066f4018 | 4611 | goto dogot; |
411e1bfb | 4612 | |
65f38f15 | 4613 | case R_PPC64_GOT16_HA: |
066f4018 | 4614 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4615 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
4616 | ppc64_elf_tdata (abfd)->has_gotrel = 1; |
4617 | ppc64_elf_section_data (sec)->has_gotrel = 1; | |
4618 | /* Fall through. */ | |
4619 | ||
bb22a418 | 4620 | case R_PPC64_GOT16_DS: |
066f4018 | 4621 | case R_PPC64_GOT16: |
65f38f15 AM |
4622 | case R_PPC64_GOT16_HI: |
4623 | case R_PPC64_GOT16_LO: | |
066f4018 | 4624 | dogot: |
65f38f15 | 4625 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4626 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4627 | if (r_type == R_PPC64_GOT_TLSLD16 |
4628 | || r_type == R_PPC64_GOT_TLSGD16 | |
4629 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4630 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4631 | || r_type == R_PPC64_GOT16 | |
4632 | || r_type == R_PPC64_GOT16_DS) | |
4633 | { | |
4634 | htab->do_multi_toc = 1; | |
d77c8a4b | 4635 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4636 | } |
4637 | ||
e717da7e AM |
4638 | if (ppc64_elf_tdata (abfd)->got == NULL |
4639 | && !create_got_section (abfd, info)) | |
b34976b6 | 4640 | return FALSE; |
5bd4f169 AM |
4641 | |
4642 | if (h != NULL) | |
4643 | { | |
411e1bfb AM |
4644 | struct ppc_link_hash_entry *eh; |
4645 | struct got_entry *ent; | |
65f38f15 | 4646 | |
411e1bfb AM |
4647 | eh = (struct ppc_link_hash_entry *) h; |
4648 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5663e321 | 4649 | if (ent->addend == sym_addend |
e717da7e | 4650 | && ent->owner == abfd |
411e1bfb AM |
4651 | && ent->tls_type == tls_type) |
4652 | break; | |
4653 | if (ent == NULL) | |
5bd4f169 | 4654 | { |
411e1bfb | 4655 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4656 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4657 | if (ent == NULL) |
b34976b6 | 4658 | return FALSE; |
411e1bfb | 4659 | ent->next = eh->elf.got.glist; |
5663e321 | 4660 | ent->addend = sym_addend; |
e717da7e | 4661 | ent->owner = abfd; |
411e1bfb | 4662 | ent->tls_type = tls_type; |
927be08e | 4663 | ent->is_indirect = FALSE; |
411e1bfb AM |
4664 | ent->got.refcount = 0; |
4665 | eh->elf.got.glist = ent; | |
5bd4f169 | 4666 | } |
411e1bfb | 4667 | ent->got.refcount += 1; |
e7b938ca | 4668 | eh->tls_mask |= tls_type; |
5bd4f169 | 4669 | } |
411e1bfb AM |
4670 | else |
4671 | /* This is a global offset table entry for a local symbol. */ | |
4672 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5663e321 | 4673 | sym_addend, tls_type)) |
411e1bfb | 4674 | return FALSE; |
a345bc8d AM |
4675 | |
4676 | /* We may also need a plt entry if the symbol turns out to be | |
4677 | an ifunc. */ | |
0e1862bb | 4678 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d | 4679 | { |
5663e321 | 4680 | if (!update_plt_info (abfd, &h->plt.plist, sym_addend)) |
a345bc8d AM |
4681 | return FALSE; |
4682 | } | |
5bd4f169 AM |
4683 | break; |
4684 | ||
5bd4f169 | 4685 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4686 | case R_PPC64_PLT16_HI: |
4687 | case R_PPC64_PLT16_LO: | |
08be3224 | 4688 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4689 | case R_PPC64_PLT_PCREL34: |
4690 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4691 | case R_PPC64_PLT32: |
4692 | case R_PPC64_PLT64: | |
cbf95972 AM |
4693 | /* This symbol requires a procedure linkage table entry. */ |
4694 | plt_list = ifunc; | |
4695 | if (h != NULL) | |
e054468f | 4696 | { |
e054468f AM |
4697 | h->needs_plt = 1; |
4698 | if (h->root.root.string[0] == '.' | |
4699 | && h->root.root.string[1] != '\0') | |
4700 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 4701 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
4702 | plt_list = &h->plt.plist; |
4703 | } | |
4704 | if (plt_list == NULL) | |
2d7ad24e | 4705 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
5663e321 | 4706 | sym_addend, |
2d7ad24e | 4707 | NON_GOT | PLT_KEEP); |
5663e321 | 4708 | if (!update_plt_info (abfd, plt_list, sym_addend)) |
cbf95972 | 4709 | return FALSE; |
5bd4f169 AM |
4710 | break; |
4711 | ||
4712 | /* The following relocations don't need to propagate the | |
4713 | relocation if linking a shared object since they are | |
4714 | section relative. */ | |
4715 | case R_PPC64_SECTOFF: | |
4716 | case R_PPC64_SECTOFF_LO: | |
4717 | case R_PPC64_SECTOFF_HI: | |
4718 | case R_PPC64_SECTOFF_HA: | |
4719 | case R_PPC64_SECTOFF_DS: | |
4720 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4721 | case R_PPC64_DTPREL16: |
4722 | case R_PPC64_DTPREL16_LO: | |
4723 | case R_PPC64_DTPREL16_HI: | |
4724 | case R_PPC64_DTPREL16_HA: | |
4725 | case R_PPC64_DTPREL16_DS: | |
4726 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4727 | case R_PPC64_DTPREL16_HIGH: |
4728 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4729 | case R_PPC64_DTPREL16_HIGHER: |
4730 | case R_PPC64_DTPREL16_HIGHERA: | |
4731 | case R_PPC64_DTPREL16_HIGHEST: | |
4732 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4733 | break; |
4734 | ||
ad8e1ba5 | 4735 | /* Nor do these. */ |
25f23106 AM |
4736 | case R_PPC64_REL16: |
4737 | case R_PPC64_REL16_LO: | |
4738 | case R_PPC64_REL16_HI: | |
4739 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4740 | case R_PPC64_REL16_HIGH: |
4741 | case R_PPC64_REL16_HIGHA: | |
4742 | case R_PPC64_REL16_HIGHER: | |
4743 | case R_PPC64_REL16_HIGHERA: | |
4744 | case R_PPC64_REL16_HIGHEST: | |
4745 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4746 | case R_PPC64_REL16_HIGHER34: |
4747 | case R_PPC64_REL16_HIGHERA34: | |
4748 | case R_PPC64_REL16_HIGHEST34: | |
4749 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4750 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4751 | break; |
4752 | ||
45965137 AM |
4753 | /* Not supported as a dynamic relocation. */ |
4754 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4755 | if (bfd_link_pic (info)) |
45965137 AM |
4756 | { |
4757 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4758 | ppc_howto_init (); | |
695344c0 | 4759 | /* xgettext:c-format */ |
174d0a74 | 4760 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4761 | "in shared libraries and PIEs\n"), |
45965137 AM |
4762 | abfd, sec, rel->r_offset, |
4763 | ppc64_elf_howto_table[r_type]->name); | |
4764 | bfd_set_error (bfd_error_bad_value); | |
4765 | return FALSE; | |
4766 | } | |
4767 | break; | |
4768 | ||
ad8e1ba5 | 4769 | case R_PPC64_TOC16: |
33c0ec9d AM |
4770 | case R_PPC64_TOC16_DS: |
4771 | htab->do_multi_toc = 1; | |
d77c8a4b | 4772 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4773 | /* Fall through. */ |
ad8e1ba5 AM |
4774 | case R_PPC64_TOC16_LO: |
4775 | case R_PPC64_TOC16_HI: | |
4776 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4777 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4778 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4779 | break; |
4780 | ||
006589cf AM |
4781 | /* Marker reloc. */ |
4782 | case R_PPC64_ENTRY: | |
4783 | break; | |
4784 | ||
5bd4f169 AM |
4785 | /* This relocation describes the C++ object vtable hierarchy. |
4786 | Reconstruct it for later use during GC. */ | |
4787 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4788 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4789 | return FALSE; |
5bd4f169 AM |
4790 | break; |
4791 | ||
4792 | /* This relocation describes which C++ vtable entries are actually | |
4793 | used. Record for later use during GC. */ | |
4794 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4795 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4796 | return FALSE; |
5bd4f169 AM |
4797 | break; |
4798 | ||
721956f4 AM |
4799 | case R_PPC64_REL14: |
4800 | case R_PPC64_REL14_BRTAKEN: | |
4801 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4802 | { |
4803 | asection *dest = NULL; | |
4804 | ||
4805 | /* Heuristic: If jumping outside our section, chances are | |
4806 | we are going to need a stub. */ | |
4807 | if (h != NULL) | |
4808 | { | |
4809 | /* If the sym is weak it may be overridden later, so | |
4810 | don't assume we know where a weak sym lives. */ | |
4811 | if (h->root.type == bfd_link_hash_defined) | |
4812 | dest = h->root.u.def.section; | |
4813 | } | |
4814 | else | |
87d72d41 AM |
4815 | { |
4816 | Elf_Internal_Sym *isym; | |
4817 | ||
4818 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4819 | abfd, r_symndx); | |
4820 | if (isym == NULL) | |
4821 | return FALSE; | |
4822 | ||
4823 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4824 | } | |
4825 | ||
220c76dd | 4826 | if (dest != sec) |
7c8fe5c4 | 4827 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4828 | } |
3e04d765 AM |
4829 | goto rel24; |
4830 | ||
4831 | case R_PPC64_PLTCALL: | |
5663e321 | 4832 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4833 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4834 | /* Fall through. */ |
4835 | ||
5d1634d7 | 4836 | case R_PPC64_REL24: |
05d0e962 | 4837 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4838 | rel24: |
cbf95972 AM |
4839 | plt_list = ifunc; |
4840 | if (h != NULL) | |
5d1634d7 | 4841 | { |
e054468f AM |
4842 | h->needs_plt = 1; |
4843 | if (h->root.root.string[0] == '.' | |
4844 | && h->root.root.string[1] != '\0') | |
4845 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 4846 | |
3a71aa26 | 4847 | if (h == tga || h == dottga) |
cbf95972 AM |
4848 | { |
4849 | sec->has_tls_reloc = 1; | |
4850 | if (rel != relocs | |
4851 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4852 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4853 | /* We have a new-style __tls_get_addr call with | |
4854 | a marker reloc. */ | |
4855 | ; | |
4856 | else | |
4857 | /* Mark this section as having an old-style call. */ | |
4858 | sec->has_tls_get_addr_call = 1; | |
4859 | } | |
4860 | plt_list = &h->plt.plist; | |
411e1bfb | 4861 | } |
cbf95972 AM |
4862 | |
4863 | /* We may need a .plt entry if the function this reloc | |
4864 | refers to is in a shared lib. */ | |
4865 | if (plt_list | |
5663e321 | 4866 | && !update_plt_info (abfd, plt_list, sym_addend)) |
cbf95972 | 4867 | return FALSE; |
411e1bfb AM |
4868 | break; |
4869 | ||
cbf95972 AM |
4870 | case R_PPC64_ADDR14: |
4871 | case R_PPC64_ADDR14_BRNTAKEN: | |
4872 | case R_PPC64_ADDR14_BRTAKEN: | |
4873 | case R_PPC64_ADDR24: | |
4874 | goto dodyn; | |
4875 | ||
411e1bfb AM |
4876 | case R_PPC64_TPREL64: |
4877 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 4878 | if (bfd_link_dll (info)) |
411e1bfb AM |
4879 | info->flags |= DF_STATIC_TLS; |
4880 | goto dotlstoc; | |
4881 | ||
4882 | case R_PPC64_DTPMOD64: | |
4883 | if (rel + 1 < rel_end | |
4884 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4885 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4886 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4887 | else |
951fd09b | 4888 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4889 | goto dotlstoc; |
4890 | ||
4891 | case R_PPC64_DTPREL64: | |
4892 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4893 | if (rel != relocs | |
4894 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4895 | && rel[-1].r_offset == rel->r_offset - 8) | |
4896 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4897 | Don't mark with TLS_DTPREL. */ | |
4898 | goto dodyn; | |
4899 | ||
4900 | dotlstoc: | |
4901 | sec->has_tls_reloc = 1; | |
4902 | if (h != NULL) | |
4903 | { | |
4904 | struct ppc_link_hash_entry *eh; | |
4905 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4906 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4907 | } |
4908 | else | |
4909 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5663e321 | 4910 | sym_addend, tls_type)) |
411e1bfb AM |
4911 | return FALSE; |
4912 | ||
7c8fe5c4 AM |
4913 | ppc64_sec = ppc64_elf_section_data (sec); |
4914 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4915 | { |
3a71aa26 AM |
4916 | bfd_size_type amt; |
4917 | ||
e7b938ca | 4918 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
4919 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
4920 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
4921 | if (ppc64_sec->u.toc.symndx == NULL) | |
4922 | return FALSE; | |
4923 | amt = sec->size * sizeof (bfd_vma) / 8; | |
4924 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
4925 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 4926 | return FALSE; |
7c8fe5c4 AM |
4927 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4928 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4929 | } |
4930 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 4931 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5663e321 | 4932 | ppc64_sec->u.toc.add[rel->r_offset / 8] = sym_addend; |
951fd09b AM |
4933 | |
4934 | /* Mark the second slot of a GD or LD entry. | |
4935 | -1 to indicate GD and -2 to indicate LD. */ | |
4936 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 4937 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4938 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 4939 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4940 | goto dodyn; |
4941 | ||
4942 | case R_PPC64_TPREL16: | |
4943 | case R_PPC64_TPREL16_LO: | |
4944 | case R_PPC64_TPREL16_HI: | |
4945 | case R_PPC64_TPREL16_HA: | |
4946 | case R_PPC64_TPREL16_DS: | |
4947 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
4948 | case R_PPC64_TPREL16_HIGH: |
4949 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
4950 | case R_PPC64_TPREL16_HIGHER: |
4951 | case R_PPC64_TPREL16_HIGHERA: | |
4952 | case R_PPC64_TPREL16_HIGHEST: | |
4953 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
4954 | if (bfd_link_dll (info)) |
4955 | info->flags |= DF_STATIC_TLS; | |
4956 | goto dodyn; | |
5d1634d7 | 4957 | |
e86ce104 | 4958 | case R_PPC64_ADDR64: |
b9399fcf | 4959 | if (is_opd |
1e2f5b6e | 4960 | && rel + 1 < rel_end |
4ce794b7 | 4961 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4962 | { |
8387904d | 4963 | if (h != NULL) |
8c5b4e52 | 4964 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 4965 | } |
e86ce104 AM |
4966 | /* Fall through. */ |
4967 | ||
65f38f15 AM |
4968 | case R_PPC64_ADDR16: |
4969 | case R_PPC64_ADDR16_DS: | |
4970 | case R_PPC64_ADDR16_HA: | |
4971 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
4972 | case R_PPC64_ADDR16_HIGH: |
4973 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
4974 | case R_PPC64_ADDR16_HIGHER: |
4975 | case R_PPC64_ADDR16_HIGHERA: | |
4976 | case R_PPC64_ADDR16_HIGHEST: | |
4977 | case R_PPC64_ADDR16_HIGHESTA: | |
4978 | case R_PPC64_ADDR16_LO: | |
4979 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
4980 | case R_PPC64_D34: |
4981 | case R_PPC64_D34_LO: | |
4982 | case R_PPC64_D34_HI30: | |
4983 | case R_PPC64_D34_HA30: | |
4984 | case R_PPC64_ADDR16_HIGHER34: | |
4985 | case R_PPC64_ADDR16_HIGHERA34: | |
4986 | case R_PPC64_ADDR16_HIGHEST34: | |
4987 | case R_PPC64_ADDR16_HIGHESTA34: | |
4988 | case R_PPC64_D28: | |
0e1862bb | 4989 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
4990 | && rel->r_addend == 0) |
4991 | { | |
4992 | /* We may need a .plt entry if this reloc refers to a | |
4993 | function in a shared lib. */ | |
5663e321 | 4994 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
a345bc8d AM |
4995 | return FALSE; |
4996 | h->pointer_equality_needed = 1; | |
4997 | } | |
4998 | /* Fall through. */ | |
4999 | ||
5000 | case R_PPC64_REL30: | |
5001 | case R_PPC64_REL32: | |
5002 | case R_PPC64_REL64: | |
65f38f15 | 5003 | case R_PPC64_ADDR32: |
65f38f15 AM |
5004 | case R_PPC64_UADDR16: |
5005 | case R_PPC64_UADDR32: | |
5006 | case R_PPC64_UADDR64: | |
5bd4f169 | 5007 | case R_PPC64_TOC: |
0e1862bb | 5008 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 5009 | /* We may need a copy reloc. */ |
f5385ebf | 5010 | h->non_got_ref = 1; |
81848ca0 | 5011 | |
41bd81ab | 5012 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5013 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5014 | break; |
e86ce104 | 5015 | |
65f38f15 AM |
5016 | /* If we are creating a shared library, and this is a reloc |
5017 | against a global symbol, or a non PC relative reloc | |
5018 | against a local symbol, then we need to copy the reloc | |
5019 | into the shared library. However, if we are linking with | |
5020 | -Bsymbolic, we do not need to copy a reloc against a | |
5021 | global symbol which is defined in an object we are | |
5022 | including in the link (i.e., DEF_REGULAR is set). At | |
5023 | this point we have not seen all the input files, so it is | |
5024 | possible that DEF_REGULAR is not set now but will be set | |
5025 | later (it is never cleared). In case of a weak definition, | |
5026 | DEF_REGULAR may be cleared later by a strong definition in | |
5027 | a shared library. We account for that possibility below by | |
f4656909 | 5028 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5029 | table entry. A similar situation occurs when creating |
5030 | shared libraries and symbol visibility changes render the | |
5031 | symbol local. | |
5032 | ||
5033 | If on the other hand, we are creating an executable, we | |
5034 | may need to keep relocations for symbols satisfied by a | |
5035 | dynamic library if we manage to avoid copy relocs for the | |
5036 | symbol. */ | |
411e1bfb | 5037 | dodyn: |
0e1862bb | 5038 | if ((bfd_link_pic (info) |
1d483afe | 5039 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5040 | || (h != NULL |
198f1157 | 5041 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5042 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5043 | || !h->def_regular)))) |
f4656909 | 5044 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 5045 | && !bfd_link_pic (info) |
65f38f15 AM |
5046 | && h != NULL |
5047 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 5048 | || !h->def_regular)) |
0e1862bb | 5049 | || (!bfd_link_pic (info) |
25f23106 | 5050 | && ifunc != NULL)) |
5bd4f169 | 5051 | { |
65f38f15 AM |
5052 | /* We must copy these reloc types into the output file. |
5053 | Create a reloc section in dynobj and make room for | |
5054 | this reloc. */ | |
5bd4f169 AM |
5055 | if (sreloc == NULL) |
5056 | { | |
83bac4b0 NC |
5057 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5058 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5059 | |
5bd4f169 | 5060 | if (sreloc == NULL) |
83bac4b0 | 5061 | return FALSE; |
5bd4f169 AM |
5062 | } |
5063 | ||
65f38f15 AM |
5064 | /* If this is a global symbol, we count the number of |
5065 | relocations we need for this symbol. */ | |
5066 | if (h != NULL) | |
5067 | { | |
19e08130 AM |
5068 | struct elf_dyn_relocs *p; |
5069 | struct elf_dyn_relocs **head; | |
5070 | ||
ec338859 | 5071 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5072 | p = *head; |
5073 | if (p == NULL || p->sec != sec) | |
5074 | { | |
5075 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5076 | if (p == NULL) | |
5077 | return FALSE; | |
5078 | p->next = *head; | |
5079 | *head = p; | |
5080 | p->sec = sec; | |
5081 | p->count = 0; | |
5082 | p->pc_count = 0; | |
5083 | } | |
5084 | p->count += 1; | |
5085 | if (!must_be_dyn_reloc (info, r_type)) | |
5086 | p->pc_count += 1; | |
65f38f15 AM |
5087 | } |
5088 | else | |
5089 | { | |
ec338859 AM |
5090 | /* Track dynamic relocs needed for local syms too. |
5091 | We really need local syms available to do this | |
5092 | easily. Oh well. */ | |
19e08130 AM |
5093 | struct ppc_dyn_relocs *p; |
5094 | struct ppc_dyn_relocs **head; | |
5095 | bfd_boolean is_ifunc; | |
ec338859 | 5096 | asection *s; |
6edfbbad | 5097 | void *vpp; |
87d72d41 | 5098 | Elf_Internal_Sym *isym; |
6edfbbad | 5099 | |
87d72d41 AM |
5100 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5101 | abfd, r_symndx); | |
5102 | if (isym == NULL) | |
b34976b6 | 5103 | return FALSE; |
ec338859 | 5104 | |
87d72d41 AM |
5105 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5106 | if (s == NULL) | |
5107 | s = sec; | |
5108 | ||
6edfbbad | 5109 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5110 | head = (struct ppc_dyn_relocs **) vpp; |
5111 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5112 | p = *head; | |
5113 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5114 | p = p->next; | |
5115 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5116 | { | |
5117 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5118 | if (p == NULL) | |
5119 | return FALSE; | |
5120 | p->next = *head; | |
5121 | *head = p; | |
5122 | p->sec = sec; | |
5123 | p->ifunc = is_ifunc; | |
5124 | p->count = 0; | |
5125 | } | |
5126 | p->count += 1; | |
ec338859 | 5127 | } |
65f38f15 | 5128 | } |
5bd4f169 | 5129 | break; |
65f38f15 AM |
5130 | |
5131 | default: | |
96e0dda4 | 5132 | break; |
5bd4f169 AM |
5133 | } |
5134 | } | |
5135 | ||
b34976b6 | 5136 | return TRUE; |
5bd4f169 AM |
5137 | } |
5138 | ||
ee67d69a AM |
5139 | /* Merge backend specific data from an object file to the output |
5140 | object file when linking. */ | |
5141 | ||
5142 | static bfd_boolean | |
50e03d47 | 5143 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5144 | { |
50e03d47 | 5145 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5146 | unsigned long iflags, oflags; |
5147 | ||
5148 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5149 | return TRUE; | |
5150 | ||
5151 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5152 | return TRUE; | |
5153 | ||
50e03d47 | 5154 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
5155 | return FALSE; |
5156 | ||
5157 | iflags = elf_elfheader (ibfd)->e_flags; | |
5158 | oflags = elf_elfheader (obfd)->e_flags; | |
5159 | ||
f6c7c3e8 | 5160 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5161 | { |
4eca0228 | 5162 | _bfd_error_handler |
695344c0 | 5163 | /* xgettext:c-format */ |
871b3ab2 | 5164 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
5165 | bfd_set_error (bfd_error_bad_value); |
5166 | return FALSE; | |
5167 | } | |
f6c7c3e8 | 5168 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5169 | { |
4eca0228 | 5170 | _bfd_error_handler |
695344c0 | 5171 | /* xgettext:c-format */ |
871b3ab2 | 5172 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5173 | ibfd, iflags, oflags); |
5174 | bfd_set_error (bfd_error_bad_value); | |
5175 | return FALSE; | |
5176 | } | |
5177 | ||
4a91d0ba AM |
5178 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
5179 | return FALSE; | |
005d79fd | 5180 | |
ee67d69a | 5181 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5182 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5183 | } |
5184 | ||
5185 | static bfd_boolean | |
5186 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5187 | { | |
5188 | /* Print normal ELF private data. */ | |
5189 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5190 | ||
5191 | if (elf_elfheader (abfd)->e_flags != 0) | |
5192 | { | |
5193 | FILE *file = ptr; | |
5194 | ||
ee67d69a AM |
5195 | fprintf (file, _("private flags = 0x%lx:"), |
5196 | elf_elfheader (abfd)->e_flags); | |
5197 | ||
5198 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5199 | fprintf (file, _(" [abiv%ld]"), | |
5200 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5201 | fputc ('\n', file); | |
5202 | } | |
5203 | ||
5204 | return TRUE; | |
5205 | } | |
5206 | ||
8387904d | 5207 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5208 | of the code entry point, and its section, which must be in the same |
5209 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5210 | |
5211 | static bfd_vma | |
5212 | opd_entry_value (asection *opd_sec, | |
5213 | bfd_vma offset, | |
5214 | asection **code_sec, | |
aef36ac1 AM |
5215 | bfd_vma *code_off, |
5216 | bfd_boolean in_code_sec) | |
8387904d AM |
5217 | { |
5218 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5219 | Elf_Internal_Rela *relocs; |
8387904d | 5220 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5221 | bfd_vma val; |
8387904d | 5222 | |
9f296da3 AM |
5223 | /* No relocs implies we are linking a --just-symbols object, or looking |
5224 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5225 | if (opd_sec->reloc_count == 0) |
5226 | { | |
729eabd5 | 5227 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5228 | |
729eabd5 AM |
5229 | if (contents == NULL) |
5230 | { | |
5231 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5232 | return (bfd_vma) -1; | |
5233 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5234 | } | |
ee1e4ede | 5235 | |
dbb3fbbb | 5236 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5237 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5238 | return (bfd_vma) -1; |
5239 | ||
729eabd5 | 5240 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5241 | if (code_sec != NULL) |
5242 | { | |
5243 | asection *sec, *likely = NULL; | |
ee1e4ede | 5244 | |
aef36ac1 | 5245 | if (in_code_sec) |
4b85d634 | 5246 | { |
aef36ac1 AM |
5247 | sec = *code_sec; |
5248 | if (sec->vma <= val | |
5249 | && val < sec->vma + sec->size) | |
5250 | likely = sec; | |
5251 | else | |
5252 | val = -1; | |
5253 | } | |
5254 | else | |
5255 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5256 | if (sec->vma <= val | |
5257 | && (sec->flags & SEC_LOAD) != 0 | |
5258 | && (sec->flags & SEC_ALLOC) != 0) | |
5259 | likely = sec; | |
5260 | if (likely != NULL) | |
5261 | { | |
5262 | *code_sec = likely; | |
5263 | if (code_off != NULL) | |
5264 | *code_off = val - likely->vma; | |
4b85d634 AM |
5265 | } |
5266 | } | |
aef36ac1 | 5267 | return val; |
4b85d634 AM |
5268 | } |
5269 | ||
0c8d6e5c | 5270 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5271 | |
729eabd5 | 5272 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5273 | if (relocs == NULL) |
5274 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5275 | /* PR 17512: file: df8e1fd6. */ |
5276 | if (relocs == NULL) | |
5277 | return (bfd_vma) -1; | |
645ea6a9 | 5278 | |
8387904d | 5279 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5280 | lo = relocs; |
8387904d | 5281 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5282 | val = (bfd_vma) -1; |
8387904d AM |
5283 | while (lo < hi) |
5284 | { | |
5285 | look = lo + (hi - lo) / 2; | |
5286 | if (look->r_offset < offset) | |
5287 | lo = look + 1; | |
5288 | else if (look->r_offset > offset) | |
5289 | hi = look; | |
5290 | else | |
5291 | { | |
0ffa91dd NC |
5292 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5293 | ||
8387904d AM |
5294 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5295 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5296 | { | |
5297 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5298 | asection *sec = NULL; |
8387904d | 5299 | |
b53dfeb2 AM |
5300 | if (symndx >= symtab_hdr->sh_info |
5301 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5302 | { |
5303 | struct elf_link_hash_entry **sym_hashes; | |
5304 | struct elf_link_hash_entry *rh; | |
5305 | ||
5306 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5307 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5308 | if (rh != NULL) |
5309 | { | |
5310 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5311 | if (rh->root.type != bfd_link_hash_defined |
5312 | && rh->root.type != bfd_link_hash_defweak) | |
5313 | break; | |
5314 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5315 | { |
bb854a36 AM |
5316 | val = rh->root.u.def.value; |
5317 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5318 | } |
5319 | } | |
5320 | } | |
5321 | ||
5322 | if (sec == NULL) | |
5323 | { | |
5324 | Elf_Internal_Sym *sym; | |
5325 | ||
5326 | if (symndx < symtab_hdr->sh_info) | |
5327 | { | |
5328 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5329 | if (sym == NULL) | |
5330 | { | |
5331 | size_t symcnt = symtab_hdr->sh_info; | |
5332 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5333 | symcnt, 0, | |
5334 | NULL, NULL, NULL); | |
5335 | if (sym == NULL) | |
5336 | break; | |
5337 | symtab_hdr->contents = (bfd_byte *) sym; | |
5338 | } | |
5339 | sym += symndx; | |
128205bb AM |
5340 | } |
5341 | else | |
5342 | { | |
b53dfeb2 AM |
5343 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5344 | 1, symndx, | |
5345 | NULL, NULL, NULL); | |
128205bb AM |
5346 | if (sym == NULL) |
5347 | break; | |
128205bb | 5348 | } |
b53dfeb2 AM |
5349 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5350 | if (sec == NULL) | |
5351 | break; | |
5352 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5353 | val = sym->st_value; | |
8387904d | 5354 | } |
b53dfeb2 | 5355 | |
8387904d AM |
5356 | val += look->r_addend; |
5357 | if (code_off != NULL) | |
5358 | *code_off = val; | |
5359 | if (code_sec != NULL) | |
aef36ac1 AM |
5360 | { |
5361 | if (in_code_sec && *code_sec != sec) | |
5362 | return -1; | |
5363 | else | |
5364 | *code_sec = sec; | |
5365 | } | |
b53dfeb2 | 5366 | if (sec->output_section != NULL) |
8387904d | 5367 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5368 | } |
5369 | break; | |
5370 | } | |
5371 | } | |
645ea6a9 | 5372 | |
645ea6a9 | 5373 | return val; |
8387904d AM |
5374 | } |
5375 | ||
aef36ac1 AM |
5376 | /* If the ELF symbol SYM might be a function in SEC, return the |
5377 | function size and set *CODE_OFF to the function's entry point, | |
5378 | otherwise return zero. */ | |
9f296da3 | 5379 | |
aef36ac1 AM |
5380 | static bfd_size_type |
5381 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5382 | bfd_vma *code_off) | |
9f296da3 | 5383 | { |
aef36ac1 AM |
5384 | bfd_size_type size; |
5385 | ||
5386 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5387 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5388 | return 0; | |
5389 | ||
5390 | size = 0; | |
5391 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5392 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5393 | ||
5394 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5395 | { |
b07bca4e AM |
5396 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5397 | bfd_vma symval = sym->value; | |
5398 | ||
5399 | if (opd != NULL | |
5400 | && opd->adjust != NULL | |
5401 | && elf_section_data (sym->section)->relocs != NULL) | |
5402 | { | |
5403 | /* opd_entry_value will use cached relocs that have been | |
5404 | adjusted, but with raw symbols. That means both local | |
5405 | and global symbols need adjusting. */ | |
5406 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5407 | if (adjust == -1) | |
5408 | return 0; | |
5409 | symval += adjust; | |
5410 | } | |
5411 | ||
5412 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5413 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5414 | return 0; | |
5415 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5416 | symbol. This size has nothing to do with the code size of the | |
5417 | function, which is what we're supposed to return, but the | |
5418 | code size isn't available without looking up the dot-sym. | |
5419 | However, doing that would be a waste of time particularly | |
5420 | since elf_find_function will look at the dot-sym anyway. | |
5421 | Now, elf_find_function will keep the largest size of any | |
5422 | function sym found at the code address of interest, so return | |
5423 | 1 here to avoid it incorrectly caching a larger function size | |
5424 | for a small function. This does mean we return the wrong | |
5425 | size for a new-ABI function of size 24, but all that does is | |
5426 | disable caching for such functions. */ | |
5427 | if (size == 24) | |
5428 | size = 1; | |
9f296da3 | 5429 | } |
aef36ac1 AM |
5430 | else |
5431 | { | |
5432 | if (sym->section != sec) | |
5433 | return 0; | |
5434 | *code_off = sym->value; | |
5435 | } | |
5436 | if (size == 0) | |
5437 | size = 1; | |
5438 | return size; | |
9f296da3 AM |
5439 | } |
5440 | ||
f378ab09 AM |
5441 | /* Return true if symbol is a strong function defined in an ELFv2 |
5442 | object with st_other localentry bits of zero, ie. its local entry | |
5443 | point coincides with its global entry point. */ | |
5444 | ||
5445 | static bfd_boolean | |
5446 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5447 | { | |
5448 | return (h != NULL | |
5449 | && h->type == STT_FUNC | |
5450 | && h->root.type == bfd_link_hash_defined | |
5451 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 5452 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
5453 | && is_ppc64_elf (h->root.u.def.section->owner) |
5454 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5455 | } | |
5456 | ||
854b41e7 AM |
5457 | /* Return true if symbol is defined in a regular object file. */ |
5458 | ||
5459 | static bfd_boolean | |
5460 | is_static_defined (struct elf_link_hash_entry *h) | |
5461 | { | |
5462 | return ((h->root.type == bfd_link_hash_defined | |
5463 | || h->root.type == bfd_link_hash_defweak) | |
5464 | && h->root.u.def.section != NULL | |
5465 | && h->root.u.def.section->output_section != NULL); | |
5466 | } | |
5467 | ||
b31867b6 AM |
5468 | /* If FDH is a function descriptor symbol, return the associated code |
5469 | entry symbol if it is defined. Return NULL otherwise. */ | |
5470 | ||
5471 | static struct ppc_link_hash_entry * | |
5472 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5473 | { | |
5474 | if (fdh->is_func_descriptor) | |
5475 | { | |
5476 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5477 | if (fh->elf.root.type == bfd_link_hash_defined | |
5478 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5479 | return fh; | |
5480 | } | |
5481 | return NULL; | |
5482 | } | |
5483 | ||
5484 | /* If FH is a function code entry symbol, return the associated | |
5485 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5486 | ||
5487 | static struct ppc_link_hash_entry * | |
5488 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5489 | { | |
5490 | if (fh->oh != NULL | |
5491 | && fh->oh->is_func_descriptor) | |
5492 | { | |
5493 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5494 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5495 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5496 | return fdh; | |
5497 | } | |
5498 | return NULL; | |
5499 | } | |
5500 | ||
8c5b4e52 AM |
5501 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5502 | ||
5503 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5504 | ||
5505 | static bfd_boolean | |
5506 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5507 | { | |
5508 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5509 | ||
5510 | if (htab != NULL && htab->need_func_desc_adj) | |
5511 | { | |
5512 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5513 | htab->need_func_desc_adj = 0; | |
5514 | } | |
5515 | return bfd_elf_gc_sections (abfd, info); | |
5516 | } | |
5517 | ||
74f0fb50 AM |
5518 | /* Mark all our entry sym sections, both opd and code section. */ |
5519 | ||
5520 | static void | |
5521 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5522 | { | |
5523 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5524 | struct bfd_sym_chain *sym; | |
5525 | ||
4dfe6ac6 NC |
5526 | if (htab == NULL) |
5527 | return; | |
5528 | ||
74f0fb50 AM |
5529 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5530 | { | |
b31867b6 | 5531 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5532 | asection *sec; |
5533 | ||
5534 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5535 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5536 | if (eh == NULL) |
5537 | continue; | |
5538 | if (eh->elf.root.type != bfd_link_hash_defined | |
5539 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5540 | continue; | |
5541 | ||
b31867b6 AM |
5542 | fh = defined_code_entry (eh); |
5543 | if (fh != NULL) | |
74f0fb50 | 5544 | { |
b31867b6 | 5545 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5546 | sec->flags |= SEC_KEEP; |
5547 | } | |
5548 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5549 | && opd_entry_value (eh->elf.root.u.def.section, | |
5550 | eh->elf.root.u.def.value, | |
aef36ac1 | 5551 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5552 | sec->flags |= SEC_KEEP; |
5553 | ||
5554 | sec = eh->elf.root.u.def.section; | |
5555 | sec->flags |= SEC_KEEP; | |
5556 | } | |
5557 | } | |
5558 | ||
64d03ab5 AM |
5559 | /* Mark sections containing dynamically referenced symbols. When |
5560 | building shared libraries, we must assume that any visible symbol is | |
5561 | referenced. */ | |
5562 | ||
5563 | static bfd_boolean | |
5564 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5565 | { | |
5566 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5567 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5568 | struct ppc_link_hash_entry *fdh; |
b407645f | 5569 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5570 | |
64d03ab5 | 5571 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5572 | fdh = defined_func_desc (eh); |
5573 | if (fdh != NULL) | |
5574 | eh = fdh; | |
64d03ab5 AM |
5575 | |
5576 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5577 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5578 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5579 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5580 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5581 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5582 | && (!bfd_link_executable (info) |
e278ae05 | 5583 | || info->gc_keep_exported |
b407645f AM |
5584 | || info->export_dynamic |
5585 | || (eh->elf.dynamic | |
5586 | && d != NULL | |
2cdcc330 AM |
5587 | && (*d->match) (&d->head, NULL, |
5588 | eh->elf.root.root.string))) | |
e278ae05 | 5589 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5590 | || !bfd_hide_sym_by_version (info->version_info, |
5591 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5592 | { |
5593 | asection *code_sec; | |
b31867b6 | 5594 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5595 | |
5596 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5597 | ||
5598 | /* Function descriptor syms cause the associated | |
5599 | function code sym section to be marked. */ | |
b31867b6 AM |
5600 | fh = defined_code_entry (eh); |
5601 | if (fh != NULL) | |
5602 | { | |
5603 | code_sec = fh->elf.root.u.def.section; | |
5604 | code_sec->flags |= SEC_KEEP; | |
5605 | } | |
64d03ab5 AM |
5606 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5607 | && opd_entry_value (eh->elf.root.u.def.section, | |
5608 | eh->elf.root.u.def.value, | |
aef36ac1 | 5609 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5610 | code_sec->flags |= SEC_KEEP; |
5611 | } | |
5612 | ||
5613 | return TRUE; | |
5614 | } | |
5615 | ||
5bd4f169 AM |
5616 | /* Return the section that should be marked against GC for a given |
5617 | relocation. */ | |
5618 | ||
5619 | static asection * | |
4ce794b7 | 5620 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5621 | struct bfd_link_info *info, |
4ce794b7 AM |
5622 | Elf_Internal_Rela *rel, |
5623 | struct elf_link_hash_entry *h, | |
5624 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5625 | { |
ccfa59ea AM |
5626 | asection *rsec; |
5627 | ||
ccfa59ea AM |
5628 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5629 | function sections, as all functions are referenced in .opd. */ | |
5630 | rsec = NULL; | |
5631 | if (get_opd_info (sec) != NULL) | |
5632 | return rsec; | |
1e2f5b6e | 5633 | |
5bd4f169 AM |
5634 | if (h != NULL) |
5635 | { | |
04c9666a | 5636 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5637 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5638 | |
4ce794b7 | 5639 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5640 | switch (r_type) |
5bd4f169 AM |
5641 | { |
5642 | case R_PPC64_GNU_VTINHERIT: | |
5643 | case R_PPC64_GNU_VTENTRY: | |
5644 | break; | |
5645 | ||
5646 | default: | |
5647 | switch (h->root.type) | |
5648 | { | |
5649 | case bfd_link_hash_defined: | |
5650 | case bfd_link_hash_defweak: | |
ccfa59ea | 5651 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5652 | fdh = defined_func_desc (eh); |
5653 | if (fdh != NULL) | |
8c5b4e52 AM |
5654 | { |
5655 | /* -mcall-aixdesc code references the dot-symbol on | |
5656 | a call reloc. Mark the function descriptor too | |
5657 | against garbage collection. */ | |
5658 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5659 | if (fdh->elf.is_weakalias) |
5660 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5661 | eh = fdh; |
5662 | } | |
1e2f5b6e AM |
5663 | |
5664 | /* Function descriptor syms cause the associated | |
5665 | function code sym section to be marked. */ | |
b31867b6 AM |
5666 | fh = defined_code_entry (eh); |
5667 | if (fh != NULL) | |
ccfa59ea AM |
5668 | { |
5669 | /* They also mark their opd section. */ | |
74f0fb50 | 5670 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5671 | |
b31867b6 | 5672 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5673 | } |
8387904d AM |
5674 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5675 | && opd_entry_value (eh->elf.root.u.def.section, | |
5676 | eh->elf.root.u.def.value, | |
aef36ac1 | 5677 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5678 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5679 | else |
1e2f5b6e AM |
5680 | rsec = h->root.u.def.section; |
5681 | break; | |
5bd4f169 AM |
5682 | |
5683 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5684 | rsec = h->root.u.c.p->section; |
5685 | break; | |
5bd4f169 AM |
5686 | |
5687 | default: | |
fb34365b | 5688 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5689 | } |
5690 | } | |
5691 | } | |
5692 | else | |
5693 | { | |
74f0fb50 | 5694 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5695 | |
5696 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5697 | opd = get_opd_info (rsec); |
5698 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5699 | { |
74f0fb50 | 5700 | rsec->gc_mark = 1; |
ccfa59ea | 5701 | |
51aecdc5 | 5702 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5703 | } |
5bd4f169 AM |
5704 | } |
5705 | ||
1e2f5b6e | 5706 | return rsec; |
5bd4f169 AM |
5707 | } |
5708 | ||
deb0e272 AM |
5709 | /* The maximum size of .sfpr. */ |
5710 | #define SFPR_MAX (218*4) | |
5711 | ||
5712 | struct sfpr_def_parms | |
5713 | { | |
699733f6 AM |
5714 | const char name[12]; |
5715 | unsigned char lo, hi; | |
2cdcc330 AM |
5716 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5717 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5718 | }; |
5719 | ||
a4b6fadd AM |
5720 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5721 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5722 | instead. */ | |
deb0e272 | 5723 | |
4dfe6ac6 | 5724 | static bfd_boolean |
a4b6fadd AM |
5725 | sfpr_define (struct bfd_link_info *info, |
5726 | const struct sfpr_def_parms *parm, | |
5727 | asection *stub_sec) | |
deb0e272 AM |
5728 | { |
5729 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5730 | unsigned int i; | |
5731 | size_t len = strlen (parm->name); | |
5732 | bfd_boolean writing = FALSE; | |
699733f6 | 5733 | char sym[16]; |
deb0e272 | 5734 | |
4dfe6ac6 NC |
5735 | if (htab == NULL) |
5736 | return FALSE; | |
5737 | ||
deb0e272 AM |
5738 | memcpy (sym, parm->name, len); |
5739 | sym[len + 2] = 0; | |
5740 | ||
5741 | for (i = parm->lo; i <= parm->hi; i++) | |
5742 | { | |
a4b6fadd | 5743 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5744 | |
5745 | sym[len + 0] = i / 10 + '0'; | |
5746 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 5747 | h = (struct ppc_link_hash_entry *) |
b32547cd | 5748 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 5749 | if (stub_sec != NULL) |
deb0e272 | 5750 | { |
a4b6fadd AM |
5751 | if (h != NULL |
5752 | && h->elf.root.type == bfd_link_hash_defined | |
5753 | && h->elf.root.u.def.section == htab->sfpr) | |
5754 | { | |
5755 | struct elf_link_hash_entry *s; | |
5756 | char buf[32]; | |
5757 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5758 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5759 | if (s == NULL) | |
5760 | return FALSE; | |
5761 | if (s->root.type == bfd_link_hash_new | |
5762 | || (s->root.type = bfd_link_hash_defined | |
5763 | && s->root.u.def.section == stub_sec)) | |
5764 | { | |
5765 | s->root.type = bfd_link_hash_defined; | |
5766 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5767 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5768 | + h->elf.root.u.def.value); |
5769 | s->ref_regular = 1; | |
5770 | s->def_regular = 1; | |
5771 | s->ref_regular_nonweak = 1; | |
5772 | s->forced_local = 1; | |
5773 | s->non_elf = 0; | |
5774 | s->root.linker_def = 1; | |
5775 | } | |
5776 | } | |
5777 | continue; | |
5778 | } | |
5779 | if (h != NULL) | |
5780 | { | |
5781 | h->save_res = 1; | |
5782 | if (!h->elf.def_regular) | |
deb0e272 | 5783 | { |
a4b6fadd AM |
5784 | h->elf.root.type = bfd_link_hash_defined; |
5785 | h->elf.root.u.def.section = htab->sfpr; | |
5786 | h->elf.root.u.def.value = htab->sfpr->size; | |
5787 | h->elf.type = STT_FUNC; | |
5788 | h->elf.def_regular = 1; | |
b32547cd | 5789 | h->elf.non_elf = 0; |
a4b6fadd AM |
5790 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5791 | writing = TRUE; | |
deb0e272 | 5792 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5793 | { |
2cdcc330 AM |
5794 | htab->sfpr->contents |
5795 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5796 | if (htab->sfpr->contents == NULL) |
5797 | return FALSE; | |
5798 | } | |
deb0e272 AM |
5799 | } |
5800 | } | |
5801 | if (writing) | |
5802 | { | |
5803 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5804 | if (i != parm->hi) | |
5805 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5806 | else | |
5807 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5808 | htab->sfpr->size = p - htab->sfpr->contents; | |
5809 | } | |
5810 | } | |
5811 | ||
5812 | return TRUE; | |
5813 | } | |
5814 | ||
5815 | static bfd_byte * | |
5816 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5817 | { | |
5818 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5819 | return p + 4; | |
5820 | } | |
5821 | ||
5822 | static bfd_byte * | |
5823 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5824 | { | |
5825 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5826 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5827 | p = p + 4; |
5828 | bfd_put_32 (abfd, BLR, p); | |
5829 | return p + 4; | |
5830 | } | |
5831 | ||
5832 | static bfd_byte * | |
5833 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5834 | { | |
5835 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5836 | return p + 4; | |
5837 | } | |
5838 | ||
5839 | static bfd_byte * | |
5840 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5841 | { | |
a078d95a | 5842 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5843 | p = p + 4; |
5844 | p = restgpr0 (abfd, p, r); | |
5845 | bfd_put_32 (abfd, MTLR_R0, p); | |
5846 | p = p + 4; | |
5847 | if (r == 29) | |
5848 | { | |
5849 | p = restgpr0 (abfd, p, 30); | |
5850 | p = restgpr0 (abfd, p, 31); | |
5851 | } | |
5852 | bfd_put_32 (abfd, BLR, p); | |
5853 | return p + 4; | |
5854 | } | |
5855 | ||
5856 | static bfd_byte * | |
5857 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5858 | { | |
5859 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5860 | return p + 4; | |
5861 | } | |
5862 | ||
5863 | static bfd_byte * | |
5864 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5865 | { | |
5866 | p = savegpr1 (abfd, p, r); | |
5867 | bfd_put_32 (abfd, BLR, p); | |
5868 | return p + 4; | |
5869 | } | |
5870 | ||
5871 | static bfd_byte * | |
5872 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5873 | { | |
5874 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5875 | return p + 4; | |
5876 | } | |
5877 | ||
5878 | static bfd_byte * | |
5879 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5880 | { | |
5881 | p = restgpr1 (abfd, p, r); | |
5882 | bfd_put_32 (abfd, BLR, p); | |
5883 | return p + 4; | |
5884 | } | |
5885 | ||
5886 | static bfd_byte * | |
5887 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5888 | { | |
5889 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5890 | return p + 4; | |
5891 | } | |
5892 | ||
5893 | static bfd_byte * | |
5894 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5895 | { | |
5896 | p = savefpr (abfd, p, r); | |
a078d95a | 5897 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5898 | p = p + 4; |
5899 | bfd_put_32 (abfd, BLR, p); | |
5900 | return p + 4; | |
5901 | } | |
5902 | ||
5903 | static bfd_byte * | |
5904 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5905 | { | |
5906 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5907 | return p + 4; | |
5908 | } | |
5909 | ||
5910 | static bfd_byte * | |
5911 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5912 | { | |
a078d95a | 5913 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5914 | p = p + 4; |
5915 | p = restfpr (abfd, p, r); | |
5916 | bfd_put_32 (abfd, MTLR_R0, p); | |
5917 | p = p + 4; | |
5918 | if (r == 29) | |
5919 | { | |
5920 | p = restfpr (abfd, p, 30); | |
5921 | p = restfpr (abfd, p, 31); | |
5922 | } | |
5923 | bfd_put_32 (abfd, BLR, p); | |
5924 | return p + 4; | |
5925 | } | |
5926 | ||
5927 | static bfd_byte * | |
5928 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5929 | { | |
5930 | p = savefpr (abfd, p, r); | |
5931 | bfd_put_32 (abfd, BLR, p); | |
5932 | return p + 4; | |
5933 | } | |
5934 | ||
5935 | static bfd_byte * | |
5936 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5937 | { | |
5938 | p = restfpr (abfd, p, r); | |
5939 | bfd_put_32 (abfd, BLR, p); | |
5940 | return p + 4; | |
5941 | } | |
5942 | ||
5943 | static bfd_byte * | |
5944 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5945 | { | |
5946 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5947 | p = p + 4; | |
5948 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5949 | return p + 4; | |
5950 | } | |
5951 | ||
5952 | static bfd_byte * | |
5953 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5954 | { | |
5955 | p = savevr (abfd, p, r); | |
5956 | bfd_put_32 (abfd, BLR, p); | |
5957 | return p + 4; | |
5958 | } | |
5959 | ||
5960 | static bfd_byte * | |
5961 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5962 | { | |
5963 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5964 | p = p + 4; | |
5965 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5966 | return p + 4; | |
5967 | } | |
5968 | ||
5969 | static bfd_byte * | |
5970 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5971 | { | |
5972 | p = restvr (abfd, p, r); | |
5973 | bfd_put_32 (abfd, BLR, p); | |
5974 | return p + 4; | |
5975 | } | |
5976 | ||
e86ce104 AM |
5977 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5978 | information on function code symbol entries to their corresponding | |
5979 | function descriptor symbol entries. */ | |
deb0e272 | 5980 | |
b34976b6 | 5981 | static bfd_boolean |
4ce794b7 | 5982 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5983 | { |
e86ce104 | 5984 | struct bfd_link_info *info; |
65f38f15 | 5985 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
5986 | struct ppc_link_hash_entry *fh; |
5987 | struct ppc_link_hash_entry *fdh; | |
5988 | bfd_boolean force_local; | |
5bd4f169 | 5989 | |
50bc7936 AM |
5990 | fh = (struct ppc_link_hash_entry *) h; |
5991 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5992 | return TRUE; |
e86ce104 | 5993 | |
8c5b4e52 AM |
5994 | if (!fh->is_func) |
5995 | return TRUE; | |
5996 | ||
5997 | if (fh->elf.root.root.string[0] != '.' | |
5998 | || fh->elf.root.root.string[1] == '\0') | |
5999 | return TRUE; | |
6000 | ||
4ce794b7 | 6001 | info = inf; |
65f38f15 | 6002 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6003 | if (htab == NULL) |
6004 | return FALSE; | |
5bd4f169 | 6005 | |
8c5b4e52 AM |
6006 | /* Find the corresponding function descriptor symbol. */ |
6007 | fdh = lookup_fdh (fh, htab); | |
6008 | ||
c09bdfe5 AM |
6009 | /* Resolve undefined references to dot-symbols as the value |
6010 | in the function descriptor, if we have one in a regular object. | |
6011 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6012 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6013 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6014 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6015 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6016 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6017 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6018 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6019 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6020 | &fh->elf.root.u.def.section, |
aef36ac1 | 6021 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6022 | { |
b31867b6 | 6023 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6024 | fh->elf.forced_local = 1; |
b31867b6 AM |
6025 | fh->elf.def_regular = fdh->elf.def_regular; |
6026 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6027 | } |
6028 | ||
8c5b4e52 AM |
6029 | if (!fh->elf.dynamic) |
6030 | { | |
6031 | struct plt_entry *ent; | |
5bd4f169 | 6032 | |
8c5b4e52 AM |
6033 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6034 | if (ent->plt.refcount > 0) | |
6035 | break; | |
6036 | if (ent == NULL) | |
6037 | return TRUE; | |
6038 | } | |
5bd4f169 | 6039 | |
8c5b4e52 | 6040 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6041 | if (fdh == NULL |
0e1862bb | 6042 | && !bfd_link_executable (info) |
50bc7936 AM |
6043 | && (fh->elf.root.type == bfd_link_hash_undefined |
6044 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6045 | { | |
908b32fc | 6046 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6047 | if (fdh == NULL) |
6048 | return FALSE; | |
50bc7936 | 6049 | } |
648cca2c | 6050 | |
8c5b4e52 | 6051 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6052 | if (fdh != NULL |
6053 | && fdh->fake | |
8c5b4e52 AM |
6054 | && (fh->elf.root.type == bfd_link_hash_defined |
6055 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6056 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6057 | |
8c5b4e52 AM |
6058 | /* Transfer dynamic linking information to the function descriptor. */ |
6059 | if (fdh != NULL) | |
6060 | { | |
f5385ebf AM |
6061 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6062 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6063 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6064 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6065 | fdh->elf.dynamic |= fh->elf.dynamic; |
6066 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6067 | || fh->elf.type == STT_FUNC | |
6068 | || fh->elf.type == STT_GNU_IFUNC); | |
6069 | move_plt_plist (fh, fdh); | |
6070 | ||
6071 | if (!fdh->elf.forced_local | |
6072 | && fh->elf.dynindx != -1) | |
6073 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6074 | return FALSE; | |
e86ce104 AM |
6075 | } |
6076 | ||
50bc7936 AM |
6077 | /* Now that the info is on the function descriptor, clear the |
6078 | function code sym info. Any function code syms for which we | |
6079 | don't have a definition in a regular file, we force local. | |
6080 | This prevents a shared library from exporting syms that have | |
6081 | been imported from another library. Function code syms that | |
6082 | are really in the library we must leave global to prevent the | |
6083 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6084 | force_local = (!fh->elf.def_regular |
6085 | || fdh == NULL | |
6086 | || !fdh->elf.def_regular | |
6087 | || fdh->elf.forced_local); | |
50bc7936 AM |
6088 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6089 | ||
b34976b6 | 6090 | return TRUE; |
e86ce104 | 6091 | } |
40b8271b | 6092 | |
a4b6fadd AM |
6093 | static const struct sfpr_def_parms save_res_funcs[] = |
6094 | { | |
6095 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6096 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6097 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6098 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6099 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6100 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6101 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6102 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6103 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6104 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6105 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6106 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6107 | }; | |
6108 | ||
e86ce104 | 6109 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6110 | this hook to a) provide some gcc support functions, and b) transfer |
6111 | dynamic linking information gathered so far on function code symbol | |
6112 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6113 | |
b34976b6 | 6114 | static bfd_boolean |
4ce794b7 AM |
6115 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6116 | struct bfd_link_info *info) | |
e86ce104 AM |
6117 | { |
6118 | struct ppc_link_hash_table *htab; | |
6119 | ||
6120 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6121 | if (htab == NULL) |
6122 | return FALSE; | |
6123 | ||
b32547cd AM |
6124 | /* Provide any missing _save* and _rest* functions. */ |
6125 | if (htab->sfpr != NULL) | |
6126 | { | |
6127 | unsigned int i; | |
6128 | ||
6129 | htab->sfpr->size = 0; | |
6130 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6131 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
6132 | return FALSE; | |
6133 | if (htab->sfpr->size == 0) | |
6134 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6135 | } | |
6136 | ||
6137 | if (bfd_link_relocatable (info)) | |
6138 | return TRUE; | |
6139 | ||
6140 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
6141 | { |
6142 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6143 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6144 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6145 | if (!htab->elf.hgot->def_regular |
6146 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6147 | { | |
6148 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6149 | htab->elf.hgot->root.u.def.value = 0; | |
6150 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6151 | htab->elf.hgot->def_regular = 1; | |
6152 | htab->elf.hgot->root.linker_def = 1; | |
6153 | } | |
dba6fa9b | 6154 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6155 | htab->elf.hgot->other |
6156 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6157 | } |
c66bb0ee | 6158 | |
8c5b4e52 AM |
6159 | if (htab->need_func_desc_adj) |
6160 | { | |
6161 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6162 | htab->need_func_desc_adj = 0; | |
6163 | } | |
805fc799 | 6164 | |
b34976b6 | 6165 | return TRUE; |
e86ce104 AM |
6166 | } |
6167 | ||
98bbb1b8 | 6168 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 6169 | |
98bbb1b8 | 6170 | static asection * |
a345bc8d AM |
6171 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
6172 | { | |
6173 | struct ppc_link_hash_entry *eh; | |
6174 | struct elf_dyn_relocs *p; | |
6175 | ||
6176 | eh = (struct ppc_link_hash_entry *) h; | |
6177 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6178 | { | |
6179 | asection *s = p->sec->output_section; | |
6180 | ||
6181 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 6182 | return p->sec; |
a345bc8d | 6183 | } |
98bbb1b8 | 6184 | return NULL; |
a345bc8d AM |
6185 | } |
6186 | ||
d311bc8b | 6187 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6188 | aliases, that apply to read-only sections. Cannot be used after |
6189 | size_dynamic_sections. */ | |
d311bc8b AM |
6190 | |
6191 | static bfd_boolean | |
6192 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6193 | { | |
6194 | struct ppc_link_hash_entry *eh; | |
6195 | ||
6196 | eh = (struct ppc_link_hash_entry *) h; | |
6197 | do | |
6198 | { | |
6199 | if (readonly_dynrelocs (&eh->elf)) | |
6200 | return TRUE; | |
ab2477e1 | 6201 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
2cdcc330 AM |
6202 | } |
6203 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
6204 | |
6205 | return FALSE; | |
6206 | } | |
8a2058b5 | 6207 | |
8a9e8e72 AM |
6208 | /* Return whether EH has pc-relative dynamic relocs. */ |
6209 | ||
6210 | static bfd_boolean | |
6211 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
6212 | { | |
6213 | struct elf_dyn_relocs *p; | |
6214 | ||
6215 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6216 | if (p->pc_count != 0) | |
6217 | return TRUE; | |
6218 | return FALSE; | |
6219 | } | |
6220 | ||
8a2058b5 AM |
6221 | /* Return true if a global entry stub will be created for H. Valid |
6222 | for ELFv2 before plt entries have been allocated. */ | |
6223 | ||
6224 | static bfd_boolean | |
6225 | global_entry_stub (struct elf_link_hash_entry *h) | |
6226 | { | |
6227 | struct plt_entry *pent; | |
6228 | ||
6229 | if (!h->pointer_equality_needed | |
6230 | || h->def_regular) | |
6231 | return FALSE; | |
6232 | ||
6233 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6234 | if (pent->plt.refcount > 0 | |
6235 | && pent->addend == 0) | |
6236 | return TRUE; | |
6237 | ||
6238 | return FALSE; | |
6239 | } | |
6240 | ||
e86ce104 AM |
6241 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6242 | regular object. The current definition is in some section of the | |
6243 | dynamic object, but we're not including those sections. We have to | |
6244 | change the definition to something the rest of the link can | |
6245 | understand. */ | |
6246 | ||
b34976b6 | 6247 | static bfd_boolean |
4ce794b7 AM |
6248 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6249 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6250 | { |
6251 | struct ppc_link_hash_table *htab; | |
5474d94f | 6252 | asection *s, *srel; |
e86ce104 AM |
6253 | |
6254 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6255 | if (htab == NULL) |
6256 | return FALSE; | |
e86ce104 AM |
6257 | |
6258 | /* Deal with function syms. */ | |
6259 | if (h->type == STT_FUNC | |
e054468f | 6260 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6261 | || h->needs_plt) |
e86ce104 | 6262 | { |
529fe20e AM |
6263 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
6264 | || SYMBOL_CALLS_LOCAL (info, h) | |
6265 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6266 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6267 | function symbol is local and not an ifunc. We keep dynamic | |
6268 | relocs for ifuncs when local rather than always emitting a | |
6269 | plt call stub for them and defining the symbol on the call | |
6270 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6271 | is defined on a descriptor, not code) and it can be faster at | |
6272 | run-time due to not needing to bounce through a stub. The | |
6273 | dyn_relocs for ifuncs will be applied even in a static | |
6274 | executable. */ | |
6275 | if (!bfd_link_pic (info) | |
6276 | && h->type != STT_GNU_IFUNC | |
6277 | && local) | |
6278 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6279 | ||
e86ce104 AM |
6280 | /* Clear procedure linkage table information for any symbol that |
6281 | won't need a .plt entry. */ | |
411e1bfb AM |
6282 | struct plt_entry *ent; |
6283 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6284 | if (ent->plt.refcount > 0) | |
6285 | break; | |
8387904d | 6286 | if (ent == NULL |
2d7ad24e AM |
6287 | || (h->type != STT_GNU_IFUNC |
6288 | && local | |
3e04d765 AM |
6289 | && (htab->can_convert_all_inline_plt |
6290 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
6291 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 6292 | { |
411e1bfb | 6293 | h->plt.plist = NULL; |
f5385ebf | 6294 | h->needs_plt = 0; |
d1eca1e4 | 6295 | h->pointer_equality_needed = 0; |
40b8271b | 6296 | } |
8a2058b5 | 6297 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6298 | { |
d1eca1e4 AM |
6299 | /* Taking a function's address in a read/write section |
6300 | doesn't require us to define the function symbol in the | |
6301 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6302 | be used instead. The reason we prefer a few more dynamic |
6303 | relocs is that calling via a global entry stub costs a | |
6304 | few more instructions, and pointer_equality_needed causes | |
6305 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6306 | if (global_entry_stub (h)) |
d1eca1e4 | 6307 | { |
ab2477e1 | 6308 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
6309 | { |
6310 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6311 | /* If we haven't seen a branch reloc and the symbol |
6312 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6313 | if (!h->needs_plt) |
6314 | h->plt.plist = NULL; | |
6315 | } | |
6316 | else if (!bfd_link_pic (info)) | |
6317 | /* We are going to be defining the function symbol on the | |
6318 | plt stub, so no dyn_relocs needed when non-pic. */ | |
6319 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
6320 | } |
6321 | ||
3988aed5 AM |
6322 | /* ELFv2 function symbols can't have copy relocs. */ |
6323 | return TRUE; | |
6324 | } | |
6325 | else if (!h->needs_plt | |
ab2477e1 | 6326 | && !readonly_dynrelocs (h)) |
3988aed5 | 6327 | { |
04383fd1 AM |
6328 | /* If we haven't seen a branch reloc and the symbol isn't an |
6329 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6330 | h->plt.plist = NULL; |
6331 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6332 | return TRUE; |
6333 | } | |
5bd4f169 | 6334 | } |
bbd7ec4a | 6335 | else |
411e1bfb | 6336 | h->plt.plist = NULL; |
5bd4f169 AM |
6337 | |
6338 | /* If this is a weak symbol, and there is a real definition, the | |
6339 | processor independent code will have arranged for us to see the | |
6340 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6341 | if (h->is_weakalias) |
5bd4f169 | 6342 | { |
60d67dc8 AM |
6343 | struct elf_link_hash_entry *def = weakdef (h); |
6344 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6345 | h->root.u.def.section = def->root.u.def.section; | |
6346 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6347 | if (def->root.u.def.section == htab->elf.sdynbss |
6348 | || def->root.u.def.section == htab->elf.sdynrelro) | |
6349 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 6350 | return TRUE; |
5bd4f169 AM |
6351 | } |
6352 | ||
5bd4f169 AM |
6353 | /* If we are creating a shared library, we must presume that the |
6354 | only references to the symbol are via the global offset table. | |
6355 | For such cases we need not do anything here; the relocations will | |
6356 | be handled correctly by relocate_section. */ | |
0e1862bb | 6357 | if (bfd_link_pic (info)) |
b34976b6 | 6358 | return TRUE; |
5bd4f169 | 6359 | |
65f38f15 AM |
6360 | /* If there are no references to this symbol that do not use the |
6361 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6362 | if (!h->non_got_ref) |
b34976b6 | 6363 | return TRUE; |
65f38f15 | 6364 | |
b186458a | 6365 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6366 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6367 | |
d93d1c80 AM |
6368 | /* If -z nocopyreloc was given, don't generate them either. */ |
6369 | || info->nocopyreloc | |
a127494f | 6370 | |
dce2246a | 6371 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6372 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 6373 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 6374 | |
d93d1c80 AM |
6375 | /* Protected variables do not work with .dynbss. The copy in |
6376 | .dynbss won't be used by the shared library with the protected | |
6377 | definition for the variable. Text relocations are preferable | |
6378 | to an incorrect program. */ | |
6379 | || h->protected_def) | |
529fe20e | 6380 | return TRUE; |
a127494f | 6381 | |
5d35169e | 6382 | if (h->plt.plist != NULL) |
97b639ba AM |
6383 | { |
6384 | /* We should never get here, but unfortunately there are versions | |
6385 | of gcc out there that improperly (for this ABI) put initialized | |
6386 | function pointers, vtable refs and suchlike in read-only | |
6387 | sections. Allow them to proceed, but warn that this might | |
6388 | break at runtime. */ | |
25f53a85 | 6389 | info->callbacks->einfo |
c1c8c1ef | 6390 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6391 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6392 | h->root.root.string); |
6393 | } | |
5d35169e AM |
6394 | |
6395 | /* This is a reference to a symbol defined by a dynamic object which | |
6396 | is not a function. */ | |
6397 | ||
5bd4f169 AM |
6398 | /* We must allocate the symbol in our .dynbss section, which will |
6399 | become part of the .bss section of the executable. There will be | |
6400 | an entry for this symbol in the .dynsym section. The dynamic | |
6401 | object will contain position independent code, so all references | |
6402 | from the dynamic object to this symbol will go through the global | |
6403 | offset table. The dynamic linker will use the .dynsym entry to | |
6404 | determine the address it must put in the global offset table, so | |
6405 | both the dynamic object and the regular object will refer to the | |
6406 | same memory location for the variable. */ | |
5474d94f AM |
6407 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6408 | { | |
6409 | s = htab->elf.sdynrelro; | |
6410 | srel = htab->elf.sreldynrelro; | |
6411 | } | |
6412 | else | |
6413 | { | |
6414 | s = htab->elf.sdynbss; | |
6415 | srel = htab->elf.srelbss; | |
6416 | } | |
1d7e9d18 | 6417 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6418 | { |
4a7e5234 AM |
6419 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6420 | linker to copy the initial value out of the dynamic object | |
6421 | and into the runtime process image. */ | |
5474d94f | 6422 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6423 | h->needs_copy = 1; |
5bd4f169 AM |
6424 | } |
6425 | ||
529fe20e AM |
6426 | /* We no longer want dyn_relocs. */ |
6427 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 6428 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6429 | } |
6430 | ||
e86ce104 AM |
6431 | /* If given a function descriptor symbol, hide both the function code |
6432 | sym and the descriptor. */ | |
6433 | static void | |
4ce794b7 AM |
6434 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6435 | struct elf_link_hash_entry *h, | |
6436 | bfd_boolean force_local) | |
e86ce104 | 6437 | { |
34814b9f | 6438 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6439 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6440 | ||
87469ba2 AM |
6441 | if (ppc_hash_table (info) == NULL) |
6442 | return; | |
6443 | ||
34814b9f AM |
6444 | eh = (struct ppc_link_hash_entry *) h; |
6445 | if (eh->is_func_descriptor) | |
e86ce104 | 6446 | { |
34814b9f | 6447 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6448 | |
721956f4 | 6449 | if (fh == NULL) |
d1329ca3 AM |
6450 | { |
6451 | const char *p, *q; | |
b8ac2841 | 6452 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6453 | char save; |
6454 | ||
6455 | /* We aren't supposed to use alloca in BFD because on | |
6456 | systems which do not have alloca the version in libiberty | |
6457 | calls xmalloc, which might cause the program to crash | |
6458 | when it runs out of memory. This function doesn't have a | |
6459 | return status, so there's no way to gracefully return an | |
6460 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6461 | accessed; It's either a string in an ELF string table, |
6462 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6463 | |
34814b9f | 6464 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6465 | save = *p; |
6466 | *(char *) p = '.'; | |
34814b9f | 6467 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 6468 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6469 | *(char *) p = save; |
6470 | ||
6471 | /* Unfortunately, if it so happens that the string we were | |
6472 | looking for was allocated immediately before this string, | |
6473 | then we overwrote the string terminator. That's the only | |
6474 | reason the lookup should fail. */ | |
6475 | if (fh == NULL) | |
6476 | { | |
34814b9f AM |
6477 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6478 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6479 | --q, --p; |
34814b9f AM |
6480 | if (q < eh->elf.root.root.string && *p == '.') |
6481 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 6482 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6483 | } |
6484 | if (fh != NULL) | |
6485 | { | |
34814b9f AM |
6486 | eh->oh = fh; |
6487 | fh->oh = eh; | |
d1329ca3 AM |
6488 | } |
6489 | } | |
e86ce104 | 6490 | if (fh != NULL) |
34814b9f | 6491 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6492 | } |
6493 | } | |
6494 | ||
411e1bfb | 6495 | static bfd_boolean |
8843416a AM |
6496 | get_sym_h (struct elf_link_hash_entry **hp, |
6497 | Elf_Internal_Sym **symp, | |
6498 | asection **symsecp, | |
f961d9dd | 6499 | unsigned char **tls_maskp, |
8843416a AM |
6500 | Elf_Internal_Sym **locsymsp, |
6501 | unsigned long r_symndx, | |
6502 | bfd *ibfd) | |
411e1bfb | 6503 | { |
0ffa91dd | 6504 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6505 | |
6506 | if (r_symndx >= symtab_hdr->sh_info) | |
6507 | { | |
6508 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6509 | struct elf_link_hash_entry *h; | |
6510 | ||
6511 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6512 | h = elf_follow_link (h); |
411e1bfb AM |
6513 | |
6514 | if (hp != NULL) | |
6515 | *hp = h; | |
6516 | ||
6517 | if (symp != NULL) | |
6518 | *symp = NULL; | |
6519 | ||
6520 | if (symsecp != NULL) | |
6521 | { | |
6522 | asection *symsec = NULL; | |
6523 | if (h->root.type == bfd_link_hash_defined | |
6524 | || h->root.type == bfd_link_hash_defweak) | |
6525 | symsec = h->root.u.def.section; | |
6526 | *symsecp = symsec; | |
6527 | } | |
6528 | ||
e7b938ca | 6529 | if (tls_maskp != NULL) |
411e1bfb AM |
6530 | { |
6531 | struct ppc_link_hash_entry *eh; | |
6532 | ||
6533 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6534 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6535 | } |
6536 | } | |
6537 | else | |
6538 | { | |
6539 | Elf_Internal_Sym *sym; | |
6540 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6541 | ||
6542 | if (locsyms == NULL) | |
6543 | { | |
6544 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6545 | if (locsyms == NULL) | |
6546 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6547 | symtab_hdr->sh_info, | |
6548 | 0, NULL, NULL, NULL); | |
6549 | if (locsyms == NULL) | |
6550 | return FALSE; | |
6551 | *locsymsp = locsyms; | |
6552 | } | |
6553 | sym = locsyms + r_symndx; | |
6554 | ||
6555 | if (hp != NULL) | |
6556 | *hp = NULL; | |
6557 | ||
6558 | if (symp != NULL) | |
6559 | *symp = sym; | |
6560 | ||
6561 | if (symsecp != NULL) | |
cb33740c | 6562 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6563 | |
e7b938ca | 6564 | if (tls_maskp != NULL) |
411e1bfb AM |
6565 | { |
6566 | struct got_entry **lgot_ents; | |
f961d9dd | 6567 | unsigned char *tls_mask; |
411e1bfb | 6568 | |
e7b938ca | 6569 | tls_mask = NULL; |
411e1bfb AM |
6570 | lgot_ents = elf_local_got_ents (ibfd); |
6571 | if (lgot_ents != NULL) | |
6572 | { | |
e054468f AM |
6573 | struct plt_entry **local_plt = (struct plt_entry **) |
6574 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6575 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6576 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6577 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6578 | } |
e7b938ca | 6579 | *tls_maskp = tls_mask; |
411e1bfb AM |
6580 | } |
6581 | } | |
6582 | return TRUE; | |
6583 | } | |
6584 | ||
e7b938ca | 6585 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6586 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6587 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6588 | |
6589 | static int | |
f961d9dd | 6590 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6591 | unsigned long *toc_symndx, |
6592 | bfd_vma *toc_addend, | |
0d4792f7 | 6593 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6594 | const Elf_Internal_Rela *rel, |
6595 | bfd *ibfd) | |
411e1bfb AM |
6596 | { |
6597 | unsigned long r_symndx; | |
0d4792f7 | 6598 | int next_r; |
411e1bfb AM |
6599 | struct elf_link_hash_entry *h; |
6600 | Elf_Internal_Sym *sym; | |
6601 | asection *sec; | |
6602 | bfd_vma off; | |
6603 | ||
6604 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6605 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6606 | return 0; |
411e1bfb | 6607 | |
37da22e5 AM |
6608 | if ((*tls_maskp != NULL |
6609 | && (**tls_maskp & TLS_TLS) != 0 | |
6610 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6611 | || sec == NULL |
6bee8834 | 6612 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6613 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6614 | return 1; |
411e1bfb AM |
6615 | |
6616 | /* Look inside a TOC section too. */ | |
6617 | if (h != NULL) | |
6618 | { | |
6619 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6620 | off = h->root.u.def.value; | |
6621 | } | |
6622 | else | |
6623 | off = sym->st_value; | |
6624 | off += rel->r_addend; | |
6625 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6626 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6627 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6628 | if (toc_symndx != NULL) |
6629 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6630 | if (toc_addend != NULL) |
6631 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6632 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6633 | return 0; | |
854b41e7 | 6634 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6635 | && (next_r == -1 || next_r == -2)) |
6636 | return 1 - next_r; | |
951fd09b | 6637 | return 1; |
411e1bfb AM |
6638 | } |
6639 | ||
3b421ab3 AM |
6640 | /* Find (or create) an entry in the tocsave hash table. */ |
6641 | ||
6642 | static struct tocsave_entry * | |
6643 | tocsave_find (struct ppc_link_hash_table *htab, | |
6644 | enum insert_option insert, | |
6645 | Elf_Internal_Sym **local_syms, | |
6646 | const Elf_Internal_Rela *irela, | |
6647 | bfd *ibfd) | |
6648 | { | |
6649 | unsigned long r_indx; | |
6650 | struct elf_link_hash_entry *h; | |
6651 | Elf_Internal_Sym *sym; | |
6652 | struct tocsave_entry ent, *p; | |
6653 | hashval_t hash; | |
6654 | struct tocsave_entry **slot; | |
6655 | ||
6656 | r_indx = ELF64_R_SYM (irela->r_info); | |
6657 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6658 | return NULL; | |
6659 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6660 | { | |
4eca0228 | 6661 | _bfd_error_handler |
871b3ab2 | 6662 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6663 | return NULL; |
6664 | } | |
6665 | ||
6666 | if (h != NULL) | |
6667 | ent.offset = h->root.u.def.value; | |
6668 | else | |
6669 | ent.offset = sym->st_value; | |
6670 | ent.offset += irela->r_addend; | |
6671 | ||
6672 | hash = tocsave_htab_hash (&ent); | |
6673 | slot = ((struct tocsave_entry **) | |
6674 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6675 | if (slot == NULL) | |
6676 | return NULL; | |
6677 | ||
6678 | if (*slot == NULL) | |
6679 | { | |
6680 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6681 | if (p == NULL) | |
6682 | return NULL; | |
6683 | *p = ent; | |
6684 | *slot = p; | |
6685 | } | |
6686 | return *slot; | |
6687 | } | |
6688 | ||
754021d0 | 6689 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6690 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6691 | |
6692 | static bfd_boolean | |
6693 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6694 | { | |
6695 | struct ppc_link_hash_entry *eh; | |
6696 | asection *sym_sec; | |
74f0fb50 | 6697 | struct _opd_sec_data *opd; |
754021d0 AM |
6698 | |
6699 | if (h->root.type == bfd_link_hash_indirect) | |
6700 | return TRUE; | |
6701 | ||
754021d0 AM |
6702 | if (h->root.type != bfd_link_hash_defined |
6703 | && h->root.type != bfd_link_hash_defweak) | |
6704 | return TRUE; | |
6705 | ||
6706 | eh = (struct ppc_link_hash_entry *) h; | |
6707 | if (eh->adjust_done) | |
6708 | return TRUE; | |
6709 | ||
6710 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6711 | opd = get_opd_info (sym_sec); |
6712 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6713 | { |
51aecdc5 | 6714 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6715 | if (adjust == -1) |
6716 | { | |
6717 | /* This entry has been deleted. */ | |
b3fac117 | 6718 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6719 | if (dsec == NULL) |
6720 | { | |
6721 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6722 | if (discarded_section (dsec)) |
81688140 | 6723 | { |
b3fac117 | 6724 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6725 | break; |
6726 | } | |
6727 | } | |
4025353c | 6728 | eh->elf.root.u.def.value = 0; |
81688140 | 6729 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6730 | } |
6731 | else | |
6732 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6733 | eh->adjust_done = 1; |
6734 | } | |
6735 | return TRUE; | |
6736 | } | |
6737 | ||
8c1d1bb8 | 6738 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6739 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6740 | have already been determined. */ |
6741 | ||
6742 | static bfd_boolean | |
6743 | dec_dynrel_count (bfd_vma r_info, | |
6744 | asection *sec, | |
6745 | struct bfd_link_info *info, | |
6746 | Elf_Internal_Sym **local_syms, | |
6747 | struct elf_link_hash_entry *h, | |
19e08130 | 6748 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6749 | { |
6750 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6751 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6752 | |
6753 | /* Can this reloc be dynamic? This switch, and later tests here | |
6754 | should be kept in sync with the code in check_relocs. */ | |
6755 | r_type = ELF64_R_TYPE (r_info); | |
6756 | switch (r_type) | |
6757 | { | |
6758 | default: | |
6759 | return TRUE; | |
6760 | ||
6761 | case R_PPC64_TPREL16: | |
6762 | case R_PPC64_TPREL16_LO: | |
6763 | case R_PPC64_TPREL16_HI: | |
6764 | case R_PPC64_TPREL16_HA: | |
6765 | case R_PPC64_TPREL16_DS: | |
6766 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6767 | case R_PPC64_TPREL16_HIGH: |
6768 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
6769 | case R_PPC64_TPREL16_HIGHER: |
6770 | case R_PPC64_TPREL16_HIGHERA: | |
6771 | case R_PPC64_TPREL16_HIGHEST: | |
6772 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
6773 | case R_PPC64_TPREL64: |
6774 | case R_PPC64_DTPMOD64: | |
6775 | case R_PPC64_DTPREL64: | |
6776 | case R_PPC64_ADDR64: | |
6777 | case R_PPC64_REL30: | |
6778 | case R_PPC64_REL32: | |
6779 | case R_PPC64_REL64: | |
6780 | case R_PPC64_ADDR14: | |
6781 | case R_PPC64_ADDR14_BRNTAKEN: | |
6782 | case R_PPC64_ADDR14_BRTAKEN: | |
6783 | case R_PPC64_ADDR16: | |
6784 | case R_PPC64_ADDR16_DS: | |
6785 | case R_PPC64_ADDR16_HA: | |
6786 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
6787 | case R_PPC64_ADDR16_HIGH: |
6788 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
6789 | case R_PPC64_ADDR16_HIGHER: |
6790 | case R_PPC64_ADDR16_HIGHERA: | |
6791 | case R_PPC64_ADDR16_HIGHEST: | |
6792 | case R_PPC64_ADDR16_HIGHESTA: | |
6793 | case R_PPC64_ADDR16_LO: | |
6794 | case R_PPC64_ADDR16_LO_DS: | |
6795 | case R_PPC64_ADDR24: | |
6796 | case R_PPC64_ADDR32: | |
6797 | case R_PPC64_UADDR16: | |
6798 | case R_PPC64_UADDR32: | |
6799 | case R_PPC64_UADDR64: | |
6800 | case R_PPC64_TOC: | |
5663e321 AM |
6801 | case R_PPC64_D34: |
6802 | case R_PPC64_D34_LO: | |
6803 | case R_PPC64_D34_HI30: | |
6804 | case R_PPC64_D34_HA30: | |
6805 | case R_PPC64_ADDR16_HIGHER34: | |
6806 | case R_PPC64_ADDR16_HIGHERA34: | |
6807 | case R_PPC64_ADDR16_HIGHEST34: | |
6808 | case R_PPC64_ADDR16_HIGHESTA34: | |
6809 | case R_PPC64_D28: | |
8c1d1bb8 AM |
6810 | break; |
6811 | } | |
6812 | ||
6813 | if (local_syms != NULL) | |
6814 | { | |
6815 | unsigned long r_symndx; | |
8c1d1bb8 AM |
6816 | bfd *ibfd = sec->owner; |
6817 | ||
6818 | r_symndx = ELF64_R_SYM (r_info); | |
6819 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6820 | return FALSE; | |
6821 | } | |
6822 | ||
0e1862bb | 6823 | if ((bfd_link_pic (info) |
1d483afe | 6824 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 6825 | || (h != NULL |
198f1157 | 6826 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
6827 | || h->root.type == bfd_link_hash_defweak |
6828 | || !h->def_regular)))) | |
6829 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 6830 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
6831 | && h != NULL |
6832 | && (h->root.type == bfd_link_hash_defweak | |
6833 | || !h->def_regular))) | |
6834 | ; | |
6835 | else | |
6836 | return TRUE; | |
6837 | ||
6838 | if (h != NULL) | |
6edfbbad | 6839 | { |
19e08130 AM |
6840 | struct elf_dyn_relocs *p; |
6841 | struct elf_dyn_relocs **pp; | |
6842 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6843 | ||
6844 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6845 | with local syms for a given section. Also, symbol flags are | |
6846 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
6847 | report a dynreloc miscount. */ | |
6848 | if (*pp == NULL && info->gc_sections) | |
6849 | return TRUE; | |
6850 | ||
6851 | while ((p = *pp) != NULL) | |
60124e18 | 6852 | { |
19e08130 AM |
6853 | if (p->sec == sec) |
6854 | { | |
6855 | if (!must_be_dyn_reloc (info, r_type)) | |
6856 | p->pc_count -= 1; | |
6857 | p->count -= 1; | |
6858 | if (p->count == 0) | |
6859 | *pp = p->next; | |
6860 | return TRUE; | |
6861 | } | |
6862 | pp = &p->next; | |
60124e18 | 6863 | } |
6edfbbad | 6864 | } |
19e08130 AM |
6865 | else |
6866 | { | |
6867 | struct ppc_dyn_relocs *p; | |
6868 | struct ppc_dyn_relocs **pp; | |
6869 | void *vpp; | |
6870 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 6871 | |
19e08130 AM |
6872 | if (local_syms == NULL) |
6873 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
6874 | if (sym_sec == NULL) | |
6875 | sym_sec = sec; | |
c57da1a7 | 6876 | |
19e08130 AM |
6877 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
6878 | pp = (struct ppc_dyn_relocs **) vpp; | |
6879 | ||
6880 | if (*pp == NULL && info->gc_sections) | |
6881 | return TRUE; | |
6882 | ||
6883 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
6884 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 6885 | { |
19e08130 AM |
6886 | if (p->sec == sec && p->ifunc == is_ifunc) |
6887 | { | |
6888 | p->count -= 1; | |
6889 | if (p->count == 0) | |
6890 | *pp = p->next; | |
6891 | return TRUE; | |
6892 | } | |
6893 | pp = &p->next; | |
8c1d1bb8 | 6894 | } |
8c1d1bb8 AM |
6895 | } |
6896 | ||
695344c0 | 6897 | /* xgettext:c-format */ |
cf97bcb0 AM |
6898 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
6899 | sec->owner, sec); | |
8c1d1bb8 AM |
6900 | bfd_set_error (bfd_error_bad_value); |
6901 | return FALSE; | |
6902 | } | |
6903 | ||
754021d0 AM |
6904 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6905 | only remove those associated with functions in discarded link-once | |
6906 | sections, or weakly defined functions that have been overridden. It | |
6907 | would be possible to remove many more entries for statically linked | |
6908 | applications. */ | |
6909 | ||
b34976b6 | 6910 | bfd_boolean |
e7d1c40c | 6911 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
6912 | { |
6913 | bfd *ibfd; | |
754021d0 | 6914 | bfd_boolean some_edited = FALSE; |
3f764659 | 6915 | asection *need_pad = NULL; |
e7d1c40c AM |
6916 | struct ppc_link_hash_table *htab; |
6917 | ||
6918 | htab = ppc_hash_table (info); | |
6919 | if (htab == NULL) | |
6920 | return FALSE; | |
1e2f5b6e | 6921 | |
c72f2fb2 | 6922 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
6923 | { |
6924 | asection *sec; | |
6925 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6926 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6927 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 6928 | struct _opd_sec_data *opd; |
51aecdc5 | 6929 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 6930 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 6931 | |
854b41e7 AM |
6932 | if (!is_ppc64_elf (ibfd)) |
6933 | continue; | |
6934 | ||
1e2f5b6e | 6935 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 6936 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6937 | continue; |
6938 | ||
dbaa2011 | 6939 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
6940 | continue; |
6941 | ||
1e2f5b6e AM |
6942 | if (sec->output_section == bfd_abs_section_ptr) |
6943 | continue; | |
6944 | ||
6945 | /* Look through the section relocs. */ | |
6946 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6947 | continue; | |
6948 | ||
6cdc0ccc | 6949 | local_syms = NULL; |
0ffa91dd | 6950 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6951 | |
6952 | /* Read the relocations. */ | |
4ce794b7 | 6953 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6954 | info->keep_memory); |
1e2f5b6e | 6955 | if (relstart == NULL) |
b34976b6 | 6956 | return FALSE; |
1e2f5b6e AM |
6957 | |
6958 | /* First run through the relocs to check they are sane, and to | |
6959 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6960 | need_edit = FALSE; |
51aecdc5 | 6961 | broken = FALSE; |
3f764659 | 6962 | need_pad = sec; |
1e2f5b6e | 6963 | relend = relstart + sec->reloc_count; |
50bc7936 | 6964 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6965 | { |
04c9666a | 6966 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6967 | unsigned long r_symndx; |
6968 | asection *sym_sec; | |
6969 | struct elf_link_hash_entry *h; | |
6970 | Elf_Internal_Sym *sym; | |
51aecdc5 | 6971 | bfd_vma offset; |
1e2f5b6e | 6972 | |
51aecdc5 | 6973 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6974 | only interested in the reloc pointing to a function entry |
6975 | point. */ | |
51aecdc5 AM |
6976 | offset = rel->r_offset; |
6977 | if (rel + 1 == relend | |
6978 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
6979 | { |
6980 | /* If someone messes with .opd alignment then after a | |
6981 | "ld -r" we might have padding in the middle of .opd. | |
6982 | Also, there's nothing to prevent someone putting | |
6983 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6984 | optimization for them! */ |
3f764659 | 6985 | broken_opd: |
4eca0228 | 6986 | _bfd_error_handler |
871b3ab2 | 6987 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 6988 | broken = TRUE; |
1e2f5b6e AM |
6989 | break; |
6990 | } | |
6991 | ||
50bc7936 AM |
6992 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6993 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6994 | { | |
4eca0228 | 6995 | _bfd_error_handler |
695344c0 | 6996 | /* xgettext:c-format */ |
871b3ab2 | 6997 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 6998 | ibfd, r_type); |
51aecdc5 | 6999 | broken = TRUE; |
50bc7936 AM |
7000 | break; |
7001 | } | |
7002 | ||
1e2f5b6e | 7003 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7004 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7005 | r_symndx, ibfd)) | |
50bc7936 | 7006 | goto error_ret; |
1e2f5b6e AM |
7007 | |
7008 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7009 | { | |
411e1bfb AM |
7010 | const char *sym_name; |
7011 | if (h != NULL) | |
7012 | sym_name = h->root.root.string; | |
7013 | else | |
26c61ae5 L |
7014 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7015 | sym_sec); | |
411e1bfb | 7016 | |
4eca0228 | 7017 | _bfd_error_handler |
695344c0 | 7018 | /* xgettext:c-format */ |
871b3ab2 | 7019 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7020 | ibfd, sym_name); |
51aecdc5 | 7021 | broken = TRUE; |
1e2f5b6e AM |
7022 | break; |
7023 | } | |
7024 | ||
51020317 AM |
7025 | /* opd entries are always for functions defined in the |
7026 | current input bfd. If the symbol isn't defined in the | |
7027 | input bfd, then we won't be using the function in this | |
7028 | bfd; It must be defined in a linkonce section in another | |
7029 | bfd, or is weak. It's also possible that we are | |
7030 | discarding the function due to a linker script /DISCARD/, | |
7031 | which we test for via the output_section. */ | |
7032 | if (sym_sec->owner != ibfd | |
7033 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7034 | need_edit = TRUE; |
1e2f5b6e | 7035 | |
50bc7936 | 7036 | rel += 2; |
51aecdc5 AM |
7037 | if (rel + 1 == relend |
7038 | || (rel + 2 < relend | |
7039 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7040 | ++rel; | |
7041 | ||
7042 | if (rel == relend) | |
3f764659 JJ |
7043 | { |
7044 | if (sec->size == offset + 24) | |
7045 | { | |
7046 | need_pad = NULL; | |
7047 | break; | |
7048 | } | |
51aecdc5 | 7049 | if (sec->size == offset + 16) |
3f764659 JJ |
7050 | { |
7051 | cnt_16b++; | |
7052 | break; | |
7053 | } | |
7054 | goto broken_opd; | |
7055 | } | |
3f764659 JJ |
7056 | else if (rel + 1 < relend |
7057 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7058 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7059 | { | |
51aecdc5 AM |
7060 | if (rel[0].r_offset == offset + 16) |
7061 | cnt_16b++; | |
7062 | else if (rel[0].r_offset != offset + 24) | |
7063 | goto broken_opd; | |
3f764659 JJ |
7064 | } |
7065 | else | |
7066 | goto broken_opd; | |
1e2f5b6e AM |
7067 | } |
7068 | ||
e7d1c40c | 7069 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7070 | |
51aecdc5 | 7071 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7072 | { |
7073 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7074 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7075 | bfd_byte *rptr, *wptr; |
983bddc8 | 7076 | bfd_byte *new_contents; |
74f0fb50 AM |
7077 | bfd_size_type amt; |
7078 | ||
983bddc8 | 7079 | new_contents = NULL; |
51aecdc5 | 7080 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7081 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7082 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7083 | if (opd->adjust == NULL) |
7084 | return FALSE; | |
1e2f5b6e AM |
7085 | |
7086 | /* This seems a waste of time as input .opd sections are all | |
7087 | zeros as generated by gcc, but I suppose there's no reason | |
7088 | this will always be so. We might start putting something in | |
7089 | the third word of .opd entries. */ | |
7090 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7091 | { | |
eea6121a AM |
7092 | bfd_byte *loc; |
7093 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7094 | { |
eea6121a AM |
7095 | if (loc != NULL) |
7096 | free (loc); | |
50bc7936 | 7097 | error_ret: |
6cdc0ccc AM |
7098 | if (local_syms != NULL |
7099 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7100 | free (local_syms); | |
6cdc0ccc AM |
7101 | if (elf_section_data (sec)->relocs != relstart) |
7102 | free (relstart); | |
b34976b6 | 7103 | return FALSE; |
6cdc0ccc | 7104 | } |
1e2f5b6e AM |
7105 | sec->contents = loc; |
7106 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7107 | } | |
7108 | ||
7109 | elf_section_data (sec)->relocs = relstart; | |
7110 | ||
3f764659 | 7111 | new_contents = sec->contents; |
3f764659 JJ |
7112 | if (add_aux_fields) |
7113 | { | |
7114 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7115 | if (new_contents == NULL) | |
7116 | return FALSE; | |
51aecdc5 | 7117 | need_pad = NULL; |
3f764659 | 7118 | } |
b4f4e59f AM |
7119 | wptr = new_contents; |
7120 | rptr = sec->contents; | |
1e2f5b6e | 7121 | write_rel = relstart; |
51aecdc5 | 7122 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7123 | { |
50bc7936 AM |
7124 | unsigned long r_symndx; |
7125 | asection *sym_sec; | |
7126 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7127 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7128 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7129 | long opd_ent_size; |
7130 | Elf_Internal_Rela *next_rel; | |
7131 | bfd_boolean skip; | |
50bc7936 AM |
7132 | |
7133 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7134 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7135 | r_symndx, ibfd)) |
50bc7936 AM |
7136 | goto error_ret; |
7137 | ||
51aecdc5 AM |
7138 | next_rel = rel + 2; |
7139 | if (next_rel + 1 == relend | |
7140 | || (next_rel + 2 < relend | |
7141 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7142 | ++next_rel; | |
7143 | ||
7144 | /* See if the .opd entry is full 24 byte or | |
7145 | 16 byte (with fd_aux entry overlapped with next | |
7146 | fd_func). */ | |
7147 | opd_ent_size = 24; | |
7148 | if (next_rel == relend) | |
1e2f5b6e | 7149 | { |
51aecdc5 | 7150 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7151 | opd_ent_size = 16; |
51aecdc5 AM |
7152 | } |
7153 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7154 | opd_ent_size = 16; | |
3f764659 | 7155 | |
51aecdc5 AM |
7156 | if (h != NULL |
7157 | && h->root.root.string[0] == '.') | |
7158 | { | |
8c5b4e52 AM |
7159 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
7160 | if (fdh != NULL) | |
7161 | { | |
7162 | fdh = ppc_follow_link (fdh); | |
7163 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7164 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7165 | fdh = NULL; | |
7166 | } | |
51aecdc5 | 7167 | } |
1e2f5b6e | 7168 | |
51aecdc5 AM |
7169 | skip = (sym_sec->owner != ibfd |
7170 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7171 | if (skip) | |
7172 | { | |
7173 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7174 | { |
51aecdc5 AM |
7175 | /* Arrange for the function descriptor sym |
7176 | to be dropped. */ | |
7177 | fdh->elf.root.u.def.value = 0; | |
7178 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7179 | } |
51aecdc5 | 7180 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7181 | |
0e1862bb | 7182 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7183 | rel = next_rel; |
7184 | else | |
7185 | while (1) | |
7186 | { | |
7187 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7188 | NULL, h, sym)) | |
7189 | goto error_ret; | |
754021d0 | 7190 | |
51aecdc5 AM |
7191 | if (++rel == next_rel) |
7192 | break; | |
1e2f5b6e | 7193 | |
51aecdc5 AM |
7194 | r_symndx = ELF64_R_SYM (rel->r_info); |
7195 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7196 | r_symndx, ibfd)) | |
7197 | goto error_ret; | |
7198 | } | |
50bc7936 AM |
7199 | } |
7200 | else | |
1e2f5b6e | 7201 | { |
51aecdc5 AM |
7202 | /* We'll be keeping this opd entry. */ |
7203 | long adjust; | |
7204 | ||
7205 | if (fdh != NULL) | |
7206 | { | |
7207 | /* Redefine the function descriptor symbol to | |
7208 | this location in the opd section. It is | |
7209 | necessary to update the value here rather | |
7210 | than using an array of adjustments as we do | |
7211 | for local symbols, because various places | |
7212 | in the generic ELF code use the value | |
7213 | stored in u.def.value. */ | |
7214 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7215 | fdh->adjust_done = 1; | |
7216 | } | |
7217 | ||
7218 | /* Local syms are a bit tricky. We could | |
7219 | tweak them as they can be cached, but | |
7220 | we'd need to look through the local syms | |
7221 | for the function descriptor sym which we | |
7222 | don't have at the moment. So keep an | |
7223 | array of adjustments. */ | |
7224 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7225 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7226 | ||
7227 | if (wptr != rptr) | |
7228 | memcpy (wptr, rptr, opd_ent_size); | |
7229 | wptr += opd_ent_size; | |
7230 | if (add_aux_fields && opd_ent_size == 16) | |
7231 | { | |
7232 | memset (wptr, '\0', 8); | |
7233 | wptr += 8; | |
7234 | } | |
7235 | ||
50bc7936 | 7236 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7237 | new opd entries. */ |
7238 | for ( ; rel != next_rel; ++rel) | |
7239 | { | |
7240 | rel->r_offset += adjust; | |
7241 | if (write_rel != rel) | |
7242 | memcpy (write_rel, rel, sizeof (*rel)); | |
7243 | ++write_rel; | |
7244 | } | |
1e2f5b6e | 7245 | } |
51aecdc5 AM |
7246 | |
7247 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7248 | } |
7249 | ||
3f764659 | 7250 | sec->size = wptr - new_contents; |
1e2f5b6e | 7251 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7252 | if (add_aux_fields) |
7253 | { | |
7254 | free (sec->contents); | |
7255 | sec->contents = new_contents; | |
7256 | } | |
7257 | ||
05bf9422 | 7258 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7259 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7260 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7261 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7262 | some_edited = TRUE; |
1e2f5b6e | 7263 | } |
6cdc0ccc | 7264 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7265 | free (relstart); |
6cdc0ccc | 7266 | |
411e1bfb AM |
7267 | if (local_syms != NULL |
7268 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7269 | { | |
7270 | if (!info->keep_memory) | |
7271 | free (local_syms); | |
7272 | else | |
7273 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7274 | } | |
7275 | } | |
7276 | ||
754021d0 AM |
7277 | if (some_edited) |
7278 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7279 | ||
3f764659 JJ |
7280 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7281 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7282 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7283 | { |
7284 | bfd_byte *p; | |
7285 | ||
7286 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7287 | { | |
7288 | BFD_ASSERT (need_pad->size > 0); | |
7289 | ||
7290 | p = bfd_malloc (need_pad->size + 8); | |
7291 | if (p == NULL) | |
7292 | return FALSE; | |
699733f6 | 7293 | |
2cdcc330 AM |
7294 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7295 | p, 0, need_pad->size)) | |
3f764659 JJ |
7296 | return FALSE; |
7297 | ||
7298 | need_pad->contents = p; | |
7299 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7300 | } | |
7301 | else | |
7302 | { | |
7303 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7304 | if (p == NULL) | |
7305 | return FALSE; | |
7306 | ||
7307 | need_pad->contents = p; | |
7308 | } | |
7309 | ||
7310 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7311 | need_pad->size += 8; | |
7312 | } | |
7313 | ||
411e1bfb AM |
7314 | return TRUE; |
7315 | } | |
7316 | ||
3e04d765 AM |
7317 | /* Analyze inline PLT call relocations to see whether calls to locally |
7318 | defined functions can be converted to direct calls. */ | |
7319 | ||
7320 | bfd_boolean | |
7321 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7322 | { | |
7323 | struct ppc_link_hash_table *htab; | |
7324 | bfd *ibfd; | |
7325 | asection *sec; | |
7326 | bfd_vma low_vma, high_vma, limit; | |
7327 | ||
7328 | htab = ppc_hash_table (info); | |
7329 | if (htab == NULL) | |
7330 | return FALSE; | |
7331 | ||
7332 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7333 | reduced somewhat to cater for possible stubs that might be added | |
7334 | between the call and its destination. */ | |
7335 | if (htab->params->group_size < 0) | |
7336 | { | |
7337 | limit = -htab->params->group_size; | |
7338 | if (limit == 1) | |
7339 | limit = 0x1e00000; | |
7340 | } | |
7341 | else | |
7342 | { | |
7343 | limit = htab->params->group_size; | |
7344 | if (limit == 1) | |
7345 | limit = 0x1c00000; | |
7346 | } | |
7347 | ||
7348 | low_vma = -1; | |
7349 | high_vma = 0; | |
7350 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7351 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7352 | { | |
7353 | if (low_vma > sec->vma) | |
7354 | low_vma = sec->vma; | |
7355 | if (high_vma < sec->vma + sec->size) | |
7356 | high_vma = sec->vma + sec->size; | |
7357 | } | |
7358 | ||
7359 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7360 | convert all inline PLT sequences to direct calls when the symbol | |
7361 | is local. */ | |
7362 | if (high_vma - low_vma < limit) | |
7363 | { | |
7364 | htab->can_convert_all_inline_plt = 1; | |
7365 | return TRUE; | |
7366 | } | |
7367 | ||
7368 | /* Otherwise, go looking through relocs for cases where a direct | |
7369 | call won't reach. Mark the symbol on any such reloc to disable | |
7370 | the optimization and keep the PLT entry as it seems likely that | |
7371 | this will be better than creating trampolines. Note that this | |
7372 | will disable the optimization for all inline PLT calls to a | |
7373 | particular symbol, not just those that won't reach. The | |
7374 | difficulty in doing a more precise optimization is that the | |
7375 | linker needs to make a decision depending on whether a | |
7376 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7377 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7378 | the sequence, and there is nothing that ties those relocs | |
7379 | together except their symbol. */ | |
7380 | ||
7381 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7382 | { | |
7383 | Elf_Internal_Shdr *symtab_hdr; | |
7384 | Elf_Internal_Sym *local_syms; | |
7385 | ||
7386 | if (!is_ppc64_elf (ibfd)) | |
7387 | continue; | |
7388 | ||
7389 | local_syms = NULL; | |
7390 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7391 | ||
7392 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7393 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7394 | && !bfd_is_abs_section (sec->output_section)) | |
7395 | { | |
7396 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7397 | ||
7398 | /* Read the relocations. */ | |
7399 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7400 | info->keep_memory); | |
7401 | if (relstart == NULL) | |
7402 | return FALSE; | |
7403 | ||
7404 | relend = relstart + sec->reloc_count; | |
7405 | for (rel = relstart; rel < relend; ) | |
7406 | { | |
7407 | enum elf_ppc64_reloc_type r_type; | |
7408 | unsigned long r_symndx; | |
7409 | asection *sym_sec; | |
7410 | struct elf_link_hash_entry *h; | |
7411 | Elf_Internal_Sym *sym; | |
7412 | unsigned char *tls_maskp; | |
7413 | ||
7414 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7415 | if (r_type != R_PPC64_PLTCALL |
7416 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7417 | continue; |
7418 | ||
7419 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7420 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7421 | r_symndx, ibfd)) | |
7422 | { | |
7423 | if (elf_section_data (sec)->relocs != relstart) | |
7424 | free (relstart); | |
7425 | if (local_syms != NULL | |
2cdcc330 | 7426 | && symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7427 | free (local_syms); |
7428 | return FALSE; | |
7429 | } | |
7430 | ||
7431 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7432 | { | |
7433 | bfd_vma from, to; | |
7434 | if (h != NULL) | |
7435 | to = h->root.u.def.value; | |
7436 | else | |
7437 | to = sym->st_value; | |
7438 | to += (rel->r_addend | |
7439 | + sym_sec->output_offset | |
7440 | + sym_sec->output_section->vma); | |
7441 | from = (rel->r_offset | |
7442 | + sec->output_offset | |
7443 | + sec->output_section->vma); | |
5663e321 AM |
7444 | if (to - from + limit < 2 * limit |
7445 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7446 | && (((h ? h->other : sym->st_other) | |
7447 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7448 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7449 | *tls_maskp &= ~PLT_KEEP; |
7450 | } | |
7451 | } | |
7452 | if (elf_section_data (sec)->relocs != relstart) | |
7453 | free (relstart); | |
7454 | } | |
7455 | ||
7456 | if (local_syms != NULL | |
7457 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7458 | { | |
7459 | if (!info->keep_memory) | |
7460 | free (local_syms); | |
7461 | else | |
7462 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7463 | } | |
7464 | } | |
7465 | ||
7466 | return TRUE; | |
7467 | } | |
7468 | ||
e1918d23 | 7469 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7470 | |
e1918d23 | 7471 | asection * |
e7d1c40c | 7472 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7473 | { |
411e1bfb AM |
7474 | struct ppc_link_hash_table *htab; |
7475 | ||
411e1bfb | 7476 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7477 | if (htab == NULL) |
7478 | return NULL; | |
7479 | ||
ee67d69a AM |
7480 | if (abiversion (info->output_bfd) == 1) |
7481 | htab->opd_abi = 1; | |
7482 | ||
e7d1c40c | 7483 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7484 | htab->do_multi_toc = 0; |
7485 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7486 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7487 | |
8b5f1ed8 AM |
7488 | /* Default to --no-plt-localentry, as this option can cause problems |
7489 | with symbol interposition. For example, glibc libpthread.so and | |
7490 | libc.so duplicate many pthread symbols, with a fallback | |
7491 | implementation in libc.so. In some cases the fallback does more | |
7492 | work than the pthread implementation. __pthread_condattr_destroy | |
7493 | is one such symbol: the libpthread.so implementation is | |
7494 | localentry:0 while the libc.so implementation is localentry:8. | |
7495 | An app that "cleverly" uses dlopen to only load necessary | |
7496 | libraries at runtime may omit loading libpthread.so when not | |
7497 | running multi-threaded, which then results in the libc.so | |
7498 | fallback symbols being used and ld.so complaining. Now there | |
7499 | are workarounds in ld (see non_zero_localentry) to detect the | |
7500 | pthread situation, but that may not be the only case where | |
7501 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7502 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7503 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
7504 | if (htab->params->plt_localentry0 |
7505 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7506 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7507 | _bfd_error_handler |
7508 | (_("warning: --plt-localentry is especially dangerous without " | |
7509 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7510 | |
3a71aa26 AM |
7511 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7512 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7513 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7514 | /* Move dynamic linking info to the function descriptor sym. */ |
7515 | if (htab->tls_get_addr != NULL) | |
7516 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7517 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7518 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7519 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 7520 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
7521 | { |
7522 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7523 | ||
7524 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7525 | FALSE, FALSE, TRUE); | |
7526 | if (opt != NULL) | |
7527 | func_desc_adjust (opt, info); | |
7528 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7529 | FALSE, FALSE, TRUE); | |
7530 | if (opt_fd != NULL | |
7531 | && (opt_fd->root.type == bfd_link_hash_defined | |
7532 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7533 | { | |
7534 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7535 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7536 | be calling __tls_get_addr via a plt call stub, then | |
7537 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7538 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7539 | if (htab->elf.dynamic_sections_created | |
7540 | && tga_fd != NULL | |
7541 | && (tga_fd->type == STT_FUNC | |
7542 | || tga_fd->needs_plt) | |
7543 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 7544 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
7545 | { |
7546 | struct plt_entry *ent; | |
7547 | ||
7548 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7549 | if (ent->plt.refcount > 0) | |
7550 | break; | |
7551 | if (ent != NULL) | |
7552 | { | |
7553 | tga_fd->root.type = bfd_link_hash_indirect; | |
7554 | tga_fd->root.u.i.link = &opt_fd->root; | |
7555 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 7556 | opt_fd->mark = 1; |
a7f2871e AM |
7557 | if (opt_fd->dynindx != -1) |
7558 | { | |
7559 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7560 | opt_fd->dynindx = -1; | |
7561 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7562 | opt_fd->dynstr_index); | |
7563 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7564 | return NULL; |
a7f2871e | 7565 | } |
2cdcc330 AM |
7566 | htab->tls_get_addr_fd |
7567 | = (struct ppc_link_hash_entry *) opt_fd; | |
a7f2871e AM |
7568 | tga = &htab->tls_get_addr->elf; |
7569 | if (opt != NULL && tga != NULL) | |
7570 | { | |
7571 | tga->root.type = bfd_link_hash_indirect; | |
7572 | tga->root.u.i.link = &opt->root; | |
7573 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 7574 | opt->mark = 1; |
a7f2871e AM |
7575 | _bfd_elf_link_hash_hide_symbol (info, opt, |
7576 | tga->forced_local); | |
7577 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7578 | } | |
7579 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7580 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7581 | if (htab->tls_get_addr != NULL) | |
7582 | { | |
7583 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7584 | htab->tls_get_addr->is_func = 1; | |
7585 | } | |
7586 | } | |
7587 | } | |
7588 | } | |
7c9cf415 AM |
7589 | else if (htab->params->tls_get_addr_opt < 0) |
7590 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7591 | } |
33c0ec9d | 7592 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7593 | } |
8387904d | 7594 | |
3a71aa26 AM |
7595 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7596 | HASH1 or HASH2. */ | |
8387904d | 7597 | |
3a71aa26 AM |
7598 | static bfd_boolean |
7599 | branch_reloc_hash_match (const bfd *ibfd, | |
7600 | const Elf_Internal_Rela *rel, | |
7601 | const struct ppc_link_hash_entry *hash1, | |
7602 | const struct ppc_link_hash_entry *hash2) | |
7603 | { | |
7604 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7605 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7606 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7607 | ||
e054468f | 7608 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7609 | { |
3a71aa26 AM |
7610 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7611 | struct elf_link_hash_entry *h; | |
8387904d | 7612 | |
3a71aa26 | 7613 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7614 | h = elf_follow_link (h); |
3a71aa26 AM |
7615 | if (h == &hash1->elf || h == &hash2->elf) |
7616 | return TRUE; | |
a48ebf4d | 7617 | } |
3a71aa26 | 7618 | return FALSE; |
951fd09b | 7619 | } |
411e1bfb | 7620 | |
951fd09b AM |
7621 | /* Run through all the TLS relocs looking for optimization |
7622 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7623 | a preliminary section layout so that we know the TLS segment | |
7624 | offsets. We can't optimize earlier because some optimizations need | |
7625 | to know the tp offset, and we need to optimize before allocating | |
7626 | dynamic relocations. */ | |
7627 | ||
7628 | bfd_boolean | |
33c0ec9d | 7629 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7630 | { |
7631 | bfd *ibfd; | |
7632 | asection *sec; | |
7633 | struct ppc_link_hash_table *htab; | |
663a1470 | 7634 | unsigned char *toc_ref; |
102890f0 | 7635 | int pass; |
951fd09b | 7636 | |
3cbc1e5e | 7637 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7638 | return TRUE; |
7639 | ||
951fd09b | 7640 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7641 | if (htab == NULL) |
7642 | return FALSE; | |
7643 | ||
663a1470 AM |
7644 | /* Make two passes over the relocs. On the first pass, mark toc |
7645 | entries involved with tls relocs, and check that tls relocs | |
7646 | involved in setting up a tls_get_addr call are indeed followed by | |
7647 | such a call. If they are not, we can't do any tls optimization. | |
7648 | On the second pass twiddle tls_mask flags to notify | |
7649 | relocate_section that optimization can be done, and adjust got | |
7650 | and plt refcounts. */ | |
7651 | toc_ref = NULL; | |
7652 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7653 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7654 | { |
7655 | Elf_Internal_Sym *locsyms = NULL; | |
7656 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7657 | ||
102890f0 AM |
7658 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7659 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7660 | { | |
7661 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7662 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7663 | |
102890f0 AM |
7664 | /* Read the relocations. */ |
7665 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7666 | info->keep_memory); | |
7667 | if (relstart == NULL) | |
2915c55b JK |
7668 | { |
7669 | free (toc_ref); | |
7670 | return FALSE; | |
7671 | } | |
411e1bfb | 7672 | |
102890f0 AM |
7673 | relend = relstart + sec->reloc_count; |
7674 | for (rel = relstart; rel < relend; rel++) | |
7675 | { | |
7676 | enum elf_ppc64_reloc_type r_type; | |
7677 | unsigned long r_symndx; | |
7678 | struct elf_link_hash_entry *h; | |
7679 | Elf_Internal_Sym *sym; | |
7680 | asection *sym_sec; | |
f961d9dd AM |
7681 | unsigned char *tls_mask; |
7682 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
7683 | bfd_vma value; |
7684 | bfd_boolean ok_tprel, is_local; | |
7685 | long toc_ref_index = 0; | |
7686 | int expecting_tls_get_addr = 0; | |
663a1470 | 7687 | bfd_boolean ret = FALSE; |
411e1bfb | 7688 | |
102890f0 AM |
7689 | r_symndx = ELF64_R_SYM (rel->r_info); |
7690 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7691 | r_symndx, ibfd)) | |
7692 | { | |
7693 | err_free_rel: | |
7694 | if (elf_section_data (sec)->relocs != relstart) | |
7695 | free (relstart); | |
7696 | if (toc_ref != NULL) | |
7697 | free (toc_ref); | |
7698 | if (locsyms != NULL | |
0ffa91dd | 7699 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7700 | != (unsigned char *) locsyms)) |
7701 | free (locsyms); | |
663a1470 | 7702 | return ret; |
102890f0 | 7703 | } |
411e1bfb | 7704 | |
102890f0 AM |
7705 | if (h != NULL) |
7706 | { | |
766bc656 AM |
7707 | if (h->root.type == bfd_link_hash_defined |
7708 | || h->root.type == bfd_link_hash_defweak) | |
7709 | value = h->root.u.def.value; | |
7710 | else if (h->root.type == bfd_link_hash_undefweak) | |
7711 | value = 0; | |
7712 | else | |
663a1470 AM |
7713 | { |
7714 | found_tls_get_addr_arg = 0; | |
7715 | continue; | |
7716 | } | |
102890f0 AM |
7717 | } |
7718 | else | |
7719 | /* Symbols referenced by TLS relocs must be of type | |
7720 | STT_TLS. So no need for .opd local sym adjust. */ | |
7721 | value = sym->st_value; | |
7722 | ||
7723 | ok_tprel = FALSE; | |
7724 | is_local = FALSE; | |
7725 | if (h == NULL | |
7726 | || !h->def_dynamic) | |
7727 | { | |
7728 | is_local = TRUE; | |
766bc656 AM |
7729 | if (h != NULL |
7730 | && h->root.type == bfd_link_hash_undefweak) | |
7731 | ok_tprel = TRUE; | |
c27b8c2a AM |
7732 | else if (sym_sec != NULL |
7733 | && sym_sec->output_section != NULL) | |
766bc656 AM |
7734 | { |
7735 | value += sym_sec->output_offset; | |
7736 | value += sym_sec->output_section->vma; | |
7737 | value -= htab->elf.tls_sec->vma; | |
7738 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7739 | < (bfd_vma) 1 << 32); | |
7740 | } | |
102890f0 | 7741 | } |
951fd09b | 7742 | |
102890f0 | 7743 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
7744 | /* If this section has old-style __tls_get_addr calls |
7745 | without marker relocs, then check that each | |
7746 | __tls_get_addr call reloc is preceded by a reloc | |
7747 | that conceivably belongs to the __tls_get_addr arg | |
7748 | setup insn. If we don't find matching arg setup | |
7749 | relocs, don't do any tls optimization. */ | |
7750 | if (pass == 0 | |
7751 | && sec->has_tls_get_addr_call | |
7752 | && h != NULL | |
7753 | && (h == &htab->tls_get_addr->elf | |
7754 | || h == &htab->tls_get_addr_fd->elf) | |
7755 | && !found_tls_get_addr_arg | |
7756 | && is_branch_reloc (r_type)) | |
7757 | { | |
25f53a85 | 7758 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
7759 | "TLS optimization disabled\n"), |
7760 | ibfd, sec, rel->r_offset); | |
7761 | ret = TRUE; | |
7762 | goto err_free_rel; | |
7763 | } | |
7764 | ||
7765 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
7766 | switch (r_type) |
7767 | { | |
7768 | case R_PPC64_GOT_TLSLD16: | |
7769 | case R_PPC64_GOT_TLSLD16_LO: | |
7770 | expecting_tls_get_addr = 1; | |
663a1470 | 7771 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7772 | /* Fall through. */ |
102890f0 AM |
7773 | |
7774 | case R_PPC64_GOT_TLSLD16_HI: | |
7775 | case R_PPC64_GOT_TLSLD16_HA: | |
7776 | /* These relocs should never be against a symbol | |
7777 | defined in a shared lib. Leave them alone if | |
7778 | that turns out to be the case. */ | |
7779 | if (!is_local) | |
7780 | continue; | |
411e1bfb | 7781 | |
102890f0 | 7782 | /* LD -> LE */ |
411e1bfb | 7783 | tls_set = 0; |
102890f0 AM |
7784 | tls_clear = TLS_LD; |
7785 | tls_type = TLS_TLS | TLS_LD; | |
7786 | break; | |
411e1bfb | 7787 | |
102890f0 AM |
7788 | case R_PPC64_GOT_TLSGD16: |
7789 | case R_PPC64_GOT_TLSGD16_LO: | |
7790 | expecting_tls_get_addr = 1; | |
663a1470 | 7791 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7792 | /* Fall through. */ |
102890f0 AM |
7793 | |
7794 | case R_PPC64_GOT_TLSGD16_HI: | |
7795 | case R_PPC64_GOT_TLSGD16_HA: | |
7796 | if (ok_tprel) | |
7797 | /* GD -> LE */ | |
411e1bfb | 7798 | tls_set = 0; |
102890f0 AM |
7799 | else |
7800 | /* GD -> IE */ | |
7801 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7802 | tls_clear = TLS_GD; | |
7803 | tls_type = TLS_TLS | TLS_GD; | |
7804 | break; | |
7805 | ||
7806 | case R_PPC64_GOT_TPREL16_DS: | |
7807 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7808 | case R_PPC64_GOT_TPREL16_HI: | |
7809 | case R_PPC64_GOT_TPREL16_HA: | |
7810 | if (ok_tprel) | |
7811 | { | |
7812 | /* IE -> LE */ | |
7813 | tls_set = 0; | |
7814 | tls_clear = TLS_TPREL; | |
7815 | tls_type = TLS_TLS | TLS_TPREL; | |
7816 | break; | |
7817 | } | |
411e1bfb AM |
7818 | continue; |
7819 | ||
727fc41e AM |
7820 | case R_PPC64_TLSGD: |
7821 | case R_PPC64_TLSLD: | |
23cedd1d AM |
7822 | if (rel + 1 < relend |
7823 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
7824 | { | |
7825 | if (pass != 0 | |
2cdcc330 | 7826 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
7827 | != R_PPC64_PLTSEQ) |
7828 | && (ELF64_R_TYPE (rel[1].r_info) | |
7829 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
7830 | { |
7831 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
7832 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 7833 | r_symndx, ibfd)) |
23cedd1d AM |
7834 | goto err_free_rel; |
7835 | if (h != NULL) | |
7836 | { | |
7837 | struct plt_entry *ent = NULL; | |
7838 | ||
7839 | for (ent = h->plt.plist; | |
7840 | ent != NULL; | |
7841 | ent = ent->next) | |
7842 | if (ent->addend == rel[1].r_addend) | |
7843 | break; | |
7844 | ||
7845 | if (ent != NULL | |
7846 | && ent->plt.refcount > 0) | |
7847 | ent->plt.refcount -= 1; | |
7848 | } | |
7849 | } | |
7850 | continue; | |
7851 | } | |
663a1470 | 7852 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7853 | /* Fall through. */ |
663a1470 AM |
7854 | |
7855 | case R_PPC64_TLS: | |
7856 | case R_PPC64_TOC16: | |
7857 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
7858 | if (sym_sec == NULL || sym_sec != toc) |
7859 | continue; | |
7860 | ||
7861 | /* Mark this toc entry as referenced by a TLS | |
7862 | code sequence. We can do that now in the | |
7863 | case of R_PPC64_TLS, and after checking for | |
7864 | tls_get_addr for the TOC16 relocs. */ | |
7865 | if (toc_ref == NULL) | |
2cdcc330 AM |
7866 | toc_ref |
7867 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
7868 | if (toc_ref == NULL) |
7869 | goto err_free_rel; | |
7870 | ||
102890f0 AM |
7871 | if (h != NULL) |
7872 | value = h->root.u.def.value; | |
7873 | else | |
7874 | value = sym->st_value; | |
7875 | value += rel->r_addend; | |
73242275 AM |
7876 | if (value % 8 != 0) |
7877 | continue; | |
7878 | BFD_ASSERT (value < toc->size | |
7879 | && toc->output_offset % 8 == 0); | |
663a1470 | 7880 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
7881 | if (r_type == R_PPC64_TLS |
7882 | || r_type == R_PPC64_TLSGD | |
7883 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7884 | { |
7885 | toc_ref[toc_ref_index] = 1; | |
7886 | continue; | |
7887 | } | |
7888 | ||
7889 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7890 | continue; | |
7891 | ||
7892 | tls_set = 0; | |
7893 | tls_clear = 0; | |
7894 | expecting_tls_get_addr = 2; | |
7895 | break; | |
7896 | ||
7897 | case R_PPC64_TPREL64: | |
7898 | if (pass == 0 | |
7899 | || sec != toc | |
7900 | || toc_ref == NULL | |
663a1470 | 7901 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7902 | continue; |
7903 | if (ok_tprel) | |
7904 | { | |
7905 | /* IE -> LE */ | |
7906 | tls_set = TLS_EXPLICIT; | |
7907 | tls_clear = TLS_TPREL; | |
7908 | break; | |
7909 | } | |
7910 | continue; | |
7911 | ||
7912 | case R_PPC64_DTPMOD64: | |
7913 | if (pass == 0 | |
7914 | || sec != toc | |
7915 | || toc_ref == NULL | |
663a1470 | 7916 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7917 | continue; |
7918 | if (rel + 1 < relend | |
7919 | && (rel[1].r_info | |
7920 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7921 | && rel[1].r_offset == rel->r_offset + 8) | |
7922 | { | |
7923 | if (ok_tprel) | |
7924 | /* GD -> LE */ | |
7925 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7926 | else | |
7927 | /* GD -> IE */ | |
7928 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7929 | tls_clear = TLS_GD; | |
7930 | } | |
7931 | else | |
7932 | { | |
7933 | if (!is_local) | |
7934 | continue; | |
7935 | ||
7936 | /* LD -> LE */ | |
7937 | tls_set = TLS_EXPLICIT; | |
7938 | tls_clear = TLS_LD; | |
7939 | } | |
7940 | break; | |
7941 | ||
7942 | default: | |
7943 | continue; | |
7944 | } | |
7945 | ||
7946 | if (pass == 0) | |
7947 | { | |
727fc41e AM |
7948 | if (!expecting_tls_get_addr |
7949 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7950 | continue; |
7951 | ||
3a71aa26 AM |
7952 | if (rel + 1 < relend |
7953 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7954 | htab->tls_get_addr, | |
7955 | htab->tls_get_addr_fd)) | |
102890f0 | 7956 | { |
3a71aa26 | 7957 | if (expecting_tls_get_addr == 2) |
102890f0 | 7958 | { |
3a71aa26 | 7959 | /* Check for toc tls entries. */ |
f961d9dd | 7960 | unsigned char *toc_tls; |
3a71aa26 AM |
7961 | int retval; |
7962 | ||
7963 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7964 | &locsyms, | |
7965 | rel, ibfd); | |
7966 | if (retval == 0) | |
7967 | goto err_free_rel; | |
663a1470 AM |
7968 | if (toc_tls != NULL) |
7969 | { | |
37da22e5 AM |
7970 | if ((*toc_tls & TLS_TLS) != 0 |
7971 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
7972 | found_tls_get_addr_arg = 1; |
7973 | if (retval > 1) | |
7974 | toc_ref[toc_ref_index] = 1; | |
7975 | } | |
102890f0 | 7976 | } |
3a71aa26 | 7977 | continue; |
102890f0 AM |
7978 | } |
7979 | ||
102890f0 AM |
7980 | /* Uh oh, we didn't find the expected call. We |
7981 | could just mark this symbol to exclude it | |
7982 | from tls optimization but it's safer to skip | |
663a1470 | 7983 | the entire optimization. */ |
695344c0 | 7984 | /* xgettext:c-format */ |
25f53a85 | 7985 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
7986 | "TLS optimization disabled\n"), |
7987 | ibfd, sec, rel->r_offset); | |
7988 | ret = TRUE; | |
7989 | goto err_free_rel; | |
102890f0 AM |
7990 | } |
7991 | ||
37da22e5 AM |
7992 | /* If we don't have old-style __tls_get_addr calls |
7993 | without TLSGD/TLSLD marker relocs, and we haven't | |
7994 | found a new-style __tls_get_addr call with a | |
7995 | marker for this symbol, then we either have a | |
7996 | broken object file or an -mlongcall style | |
7997 | indirect call to __tls_get_addr without a marker. | |
7998 | Disable optimization in this case. */ | |
7999 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8000 | && (tls_set & TLS_EXPLICIT) == 0 | |
8001 | && !sec->has_tls_get_addr_call | |
8002 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
8003 | != (TLS_TLS | TLS_MARK))) | |
8004 | continue; | |
8005 | ||
23cedd1d | 8006 | if (expecting_tls_get_addr) |
102890f0 | 8007 | { |
23cedd1d AM |
8008 | struct plt_entry *ent = NULL; |
8009 | ||
8010 | if (htab->tls_get_addr != NULL) | |
8011 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8012 | ent != NULL; | |
8013 | ent = ent->next) | |
8014 | if (ent->addend == 0) | |
102890f0 | 8015 | break; |
411e1bfb | 8016 | |
23cedd1d AM |
8017 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
8018 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8019 | ent != NULL; | |
8020 | ent = ent->next) | |
8021 | if (ent->addend == 0) | |
102890f0 | 8022 | break; |
23cedd1d AM |
8023 | |
8024 | if (ent != NULL | |
8025 | && ent->plt.refcount > 0) | |
8026 | ent->plt.refcount -= 1; | |
102890f0 | 8027 | } |
411e1bfb | 8028 | |
102890f0 | 8029 | if (tls_clear == 0) |
30038c59 AM |
8030 | continue; |
8031 | ||
102890f0 AM |
8032 | if ((tls_set & TLS_EXPLICIT) == 0) |
8033 | { | |
8034 | struct got_entry *ent; | |
411e1bfb | 8035 | |
102890f0 AM |
8036 | /* Adjust got entry for this reloc. */ |
8037 | if (h != NULL) | |
8038 | ent = h->got.glist; | |
8039 | else | |
8040 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8041 | |
102890f0 AM |
8042 | for (; ent != NULL; ent = ent->next) |
8043 | if (ent->addend == rel->r_addend | |
8044 | && ent->owner == ibfd | |
8045 | && ent->tls_type == tls_type) | |
8046 | break; | |
8047 | if (ent == NULL) | |
8048 | abort (); | |
411e1bfb | 8049 | |
102890f0 AM |
8050 | if (tls_set == 0) |
8051 | { | |
8052 | /* We managed to get rid of a got entry. */ | |
8053 | if (ent->got.refcount > 0) | |
8054 | ent->got.refcount -= 1; | |
8055 | } | |
8056 | } | |
8057 | else | |
8058 | { | |
8059 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8060 | we'll lose one or two dyn relocs. */ | |
8061 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8062 | NULL, h, sym)) |
102890f0 | 8063 | return FALSE; |
411e1bfb | 8064 | |
102890f0 AM |
8065 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8066 | { | |
8067 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8068 | NULL, h, sym)) |
102890f0 AM |
8069 | return FALSE; |
8070 | } | |
8071 | } | |
411e1bfb | 8072 | |
102890f0 AM |
8073 | *tls_mask |= tls_set; |
8074 | *tls_mask &= ~tls_clear; | |
8075 | } | |
8c1d1bb8 | 8076 | |
102890f0 AM |
8077 | if (elf_section_data (sec)->relocs != relstart) |
8078 | free (relstart); | |
8079 | } | |
411e1bfb | 8080 | |
663a1470 AM |
8081 | if (locsyms != NULL |
8082 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8083 | { | |
8084 | if (!info->keep_memory) | |
8085 | free (locsyms); | |
8086 | else | |
8087 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8088 | } | |
8089 | } | |
411e1bfb | 8090 | |
663a1470 AM |
8091 | if (toc_ref != NULL) |
8092 | free (toc_ref); | |
9a23f96e | 8093 | htab->do_tls_opt = 1; |
b34976b6 | 8094 | return TRUE; |
1e2f5b6e | 8095 | } |
b34976b6 | 8096 | |
c5614fa4 AM |
8097 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8098 | the values of any global symbols in a toc section that has been | |
8099 | edited. Globals in toc sections should be a rarity, so this function | |
8100 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8101 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8102 | |
8103 | struct adjust_toc_info | |
8104 | { | |
8105 | asection *toc; | |
8106 | unsigned long *skip; | |
8107 | bfd_boolean global_toc_syms; | |
8108 | }; | |
8109 | ||
ba761f19 AM |
8110 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8111 | ||
c5614fa4 AM |
8112 | static bfd_boolean |
8113 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8114 | { | |
8115 | struct ppc_link_hash_entry *eh; | |
8116 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8117 | unsigned long i; |
c5614fa4 | 8118 | |
c5614fa4 AM |
8119 | if (h->root.type != bfd_link_hash_defined |
8120 | && h->root.type != bfd_link_hash_defweak) | |
8121 | return TRUE; | |
8122 | ||
8123 | eh = (struct ppc_link_hash_entry *) h; | |
8124 | if (eh->adjust_done) | |
8125 | return TRUE; | |
8126 | ||
8127 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8128 | { | |
854b41e7 AM |
8129 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8130 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8131 | else |
854b41e7 AM |
8132 | i = eh->elf.root.u.def.value >> 3; |
8133 | ||
ba761f19 | 8134 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8135 | { |
4eca0228 | 8136 | _bfd_error_handler |
854b41e7 AM |
8137 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8138 | do | |
8139 | ++i; | |
ba761f19 | 8140 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8141 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8142 | } |
854b41e7 AM |
8143 | |
8144 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8145 | eh->adjust_done = 1; |
8146 | } | |
8147 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8148 | toc_inf->global_toc_syms = TRUE; | |
8149 | ||
8150 | return TRUE; | |
8151 | } | |
8152 | ||
39eeab25 AM |
8153 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8154 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8155 | |
8156 | static bfd_boolean | |
39eeab25 | 8157 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8158 | { |
39eeab25 AM |
8159 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
8160 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
8161 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
8162 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8163 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8164 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8165 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8166 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8167 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8168 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8169 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8170 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8171 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8172 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8173 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
8174 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
8175 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
8176 | /* Exclude lfqu by testing reloc. If relocs are ever | |
8177 | defined for the reduced D field in psq_lu then those | |
8178 | will need testing too. */ | |
8179 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
8180 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
8181 | && (insn & 1) == 0) | |
8182 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
8183 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
8184 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
8185 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
8186 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
8187 | && (insn & 1) == 0)); | |
560c8763 AM |
8188 | } |
8189 | ||
4a421c53 AM |
8190 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8191 | pld ra,symbol@got@pcrel | |
8192 | load/store rt,0(ra) | |
8193 | or | |
d4b87b1e | 8194 | pla ra,symbol@pcrel |
4a421c53 AM |
8195 | load/store rt,0(ra) |
8196 | may be translated to | |
8197 | pload/pstore rt,symbol@pcrel | |
8198 | nop. | |
8199 | This function returns true if the optimization is possible, placing | |
8200 | the prefix insn in *PINSN1 and a NOP in *PINSN2. | |
8201 | ||
8202 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8203 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8204 | while *PINSN2 is the second instruction. */ |
8205 | ||
8206 | static bfd_boolean | |
8207 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2) | |
8208 | { | |
8209 | uint32_t insn2 = *pinsn2 >> 32; | |
8210 | uint64_t i1new; | |
8211 | ||
8212 | /* Check that regs match. */ | |
8213 | if (((insn2 >> 16) & 31) != ((*pinsn1 >> 21) & 31)) | |
8214 | return FALSE; | |
8215 | ||
8216 | switch ((insn2 >> 26) & 63) | |
8217 | { | |
8218 | default: | |
8219 | return FALSE; | |
8220 | ||
8221 | case 32: /* lwz */ | |
8222 | case 34: /* lbz */ | |
8223 | case 36: /* stw */ | |
8224 | case 38: /* stb */ | |
8225 | case 40: /* lhz */ | |
8226 | case 42: /* lha */ | |
8227 | case 44: /* sth */ | |
8228 | case 48: /* lfs */ | |
8229 | case 50: /* lfd */ | |
8230 | case 52: /* stfs */ | |
8231 | case 54: /* stfd */ | |
8232 | /* These are the PMLS cases, where we just need to tack a prefix | |
8233 | on the insn. Check that the D field is zero. */ | |
8234 | if ((insn2 & 0xffff) != 0) | |
8235 | return FALSE; | |
8236 | i1new = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
8237 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); | |
8238 | break; | |
8239 | ||
8240 | case 58: /* lwa, ld */ | |
8241 | if ((insn2 & 0xfffd) != 0) | |
8242 | return FALSE; | |
8243 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8244 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) | |
8245 | | (insn2 & (31ULL << 21))); | |
8246 | break; | |
8247 | ||
8248 | case 57: /* lxsd, lxssp */ | |
8249 | if ((insn2 & 0xfffc) != 0 || (insn2 & 3) < 2) | |
8250 | return FALSE; | |
8251 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8252 | | ((40ULL | (insn2 & 3)) << 26) | |
8253 | | (insn2 & (31ULL << 21))); | |
8254 | break; | |
8255 | ||
8256 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8257 | if ((insn2 & 3) == 0) | |
8258 | return FALSE; | |
8259 | else if ((insn2 & 3) >= 2) | |
8260 | { | |
8261 | if ((insn2 & 0xfffc) != 0) | |
8262 | return FALSE; | |
8263 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8264 | | ((44ULL | (insn2 & 3)) << 26) | |
8265 | | (insn2 & (31ULL << 21))); | |
8266 | } | |
8267 | else | |
8268 | { | |
8269 | if ((insn2 & 0xfff0) != 0) | |
8270 | return FALSE; | |
8271 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8272 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) | |
8273 | | (insn2 & (31ULL << 21))); | |
8274 | } | |
8275 | break; | |
8276 | ||
8277 | case 56: /* lq */ | |
8278 | if ((insn2 & 0xffff) != 0) | |
8279 | return FALSE; | |
8280 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8281 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); | |
8282 | break; | |
8283 | ||
8284 | case 62: /* std, stq */ | |
8285 | if ((insn2 & 0xfffd) != 0) | |
8286 | return FALSE; | |
8287 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8288 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) | |
8289 | | (insn2 & (31ULL << 21))); | |
8290 | break; | |
8291 | } | |
8292 | ||
8293 | *pinsn1 = i1new; | |
8294 | *pinsn2 = (uint64_t) NOP << 32; | |
8295 | return TRUE; | |
8296 | } | |
8297 | ||
c5614fa4 AM |
8298 | /* Examine all relocs referencing .toc sections in order to remove |
8299 | unused .toc entries. */ | |
8300 | ||
8301 | bfd_boolean | |
33c0ec9d | 8302 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8303 | { |
8304 | bfd *ibfd; | |
8305 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8306 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8307 | |
67f0cbdb | 8308 | htab->do_toc_opt = 1; |
c5614fa4 | 8309 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8310 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8311 | { |
8312 | asection *toc, *sec; | |
8313 | Elf_Internal_Shdr *symtab_hdr; | |
8314 | Elf_Internal_Sym *local_syms; | |
425b145b | 8315 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8316 | unsigned long *skip, *drop; |
8317 | unsigned char *used; | |
8318 | unsigned char *keep, last, some_unused; | |
8319 | ||
854b41e7 AM |
8320 | if (!is_ppc64_elf (ibfd)) |
8321 | continue; | |
8322 | ||
c5614fa4 AM |
8323 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8324 | if (toc == NULL | |
92b7a70f | 8325 | || toc->size == 0 |
dbaa2011 AM |
8326 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8327 | || discarded_section (toc)) | |
c5614fa4 AM |
8328 | continue; |
8329 | ||
425b145b | 8330 | toc_relocs = NULL; |
c5614fa4 | 8331 | local_syms = NULL; |
0ffa91dd | 8332 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8333 | |
8334 | /* Look at sections dropped from the final link. */ | |
8335 | skip = NULL; | |
8336 | relstart = NULL; | |
8337 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8338 | { | |
8339 | if (sec->reloc_count == 0 | |
dbaa2011 | 8340 | || !discarded_section (sec) |
c5614fa4 AM |
8341 | || get_opd_info (sec) |
8342 | || (sec->flags & SEC_ALLOC) == 0 | |
8343 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8344 | continue; | |
8345 | ||
8346 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8347 | if (relstart == NULL) | |
8348 | goto error_ret; | |
8349 | ||
8350 | /* Run through the relocs to see which toc entries might be | |
8351 | unused. */ | |
8352 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8353 | { | |
8354 | enum elf_ppc64_reloc_type r_type; | |
8355 | unsigned long r_symndx; | |
8356 | asection *sym_sec; | |
8357 | struct elf_link_hash_entry *h; | |
8358 | Elf_Internal_Sym *sym; | |
8359 | bfd_vma val; | |
8360 | ||
8361 | r_type = ELF64_R_TYPE (rel->r_info); | |
8362 | switch (r_type) | |
8363 | { | |
8364 | default: | |
8365 | continue; | |
8366 | ||
8367 | case R_PPC64_TOC16: | |
8368 | case R_PPC64_TOC16_LO: | |
8369 | case R_PPC64_TOC16_HI: | |
8370 | case R_PPC64_TOC16_HA: | |
8371 | case R_PPC64_TOC16_DS: | |
8372 | case R_PPC64_TOC16_LO_DS: | |
8373 | break; | |
8374 | } | |
8375 | ||
8376 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8377 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8378 | r_symndx, ibfd)) | |
8379 | goto error_ret; | |
8380 | ||
8381 | if (sym_sec != toc) | |
8382 | continue; | |
8383 | ||
8384 | if (h != NULL) | |
8385 | val = h->root.u.def.value; | |
8386 | else | |
8387 | val = sym->st_value; | |
8388 | val += rel->r_addend; | |
8389 | ||
8390 | if (val >= toc->size) | |
8391 | continue; | |
8392 | ||
8393 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8394 | If not, don't mark as unused. */ | |
8395 | if (val & 7) | |
8396 | continue; | |
8397 | ||
8398 | if (skip == NULL) | |
8399 | { | |
854b41e7 | 8400 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8401 | if (skip == NULL) |
8402 | goto error_ret; | |
8403 | } | |
8404 | ||
ba761f19 | 8405 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8406 | } |
8407 | ||
8408 | if (elf_section_data (sec)->relocs != relstart) | |
8409 | free (relstart); | |
8410 | } | |
8411 | ||
ba761f19 AM |
8412 | /* For largetoc loads of address constants, we can convert |
8413 | . addis rx,2,addr@got@ha | |
8414 | . ld ry,addr@got@l(rx) | |
8415 | to | |
8416 | . addis rx,2,addr@toc@ha | |
8417 | . addi ry,rx,addr@toc@l | |
8418 | when addr is within 2G of the toc pointer. This then means | |
8419 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8420 | |
ba761f19 AM |
8421 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8422 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8423 | && toc->reloc_count != 0) | |
8424 | { | |
8425 | /* Read toc relocs. */ | |
425b145b AM |
8426 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8427 | info->keep_memory); | |
8428 | if (toc_relocs == NULL) | |
ba761f19 AM |
8429 | goto error_ret; |
8430 | ||
425b145b | 8431 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8432 | { |
8433 | enum elf_ppc64_reloc_type r_type; | |
8434 | unsigned long r_symndx; | |
8435 | asection *sym_sec; | |
8436 | struct elf_link_hash_entry *h; | |
8437 | Elf_Internal_Sym *sym; | |
8438 | bfd_vma val, addr; | |
8439 | ||
8440 | r_type = ELF64_R_TYPE (rel->r_info); | |
8441 | if (r_type != R_PPC64_ADDR64) | |
8442 | continue; | |
8443 | ||
8444 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8445 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8446 | r_symndx, ibfd)) | |
8447 | goto error_ret; | |
8448 | ||
425b145b | 8449 | if (sym_sec == NULL |
c27b8c2a | 8450 | || sym_sec->output_section == NULL |
dbaa2011 | 8451 | || discarded_section (sym_sec)) |
425b145b AM |
8452 | continue; |
8453 | ||
afe397ea | 8454 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8455 | continue; |
8456 | ||
8457 | if (h != NULL) | |
bddc25c9 AM |
8458 | { |
8459 | if (h->type == STT_GNU_IFUNC) | |
8460 | continue; | |
8461 | val = h->root.u.def.value; | |
8462 | } | |
ba761f19 | 8463 | else |
bddc25c9 AM |
8464 | { |
8465 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8466 | continue; | |
8467 | val = sym->st_value; | |
8468 | } | |
ba761f19 AM |
8469 | val += rel->r_addend; |
8470 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8471 | ||
8472 | /* We don't yet know the exact toc pointer value, but we | |
8473 | know it will be somewhere in the toc section. Don't | |
8474 | optimize if the difference from any possible toc | |
8475 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8476 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8477 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8478 | continue; | |
8479 | ||
8480 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8481 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8482 | continue; | |
8483 | ||
8484 | if (skip == NULL) | |
8485 | { | |
8486 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8487 | if (skip == NULL) | |
8488 | goto error_ret; | |
8489 | } | |
8490 | ||
8491 | skip[rel->r_offset >> 3] | |
425b145b | 8492 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8493 | } |
ba761f19 AM |
8494 | } |
8495 | ||
c5614fa4 AM |
8496 | if (skip == NULL) |
8497 | continue; | |
8498 | ||
8499 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8500 | if (used == NULL) | |
8501 | { | |
8502 | error_ret: | |
8503 | if (local_syms != NULL | |
8504 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8505 | free (local_syms); | |
8506 | if (sec != NULL | |
8507 | && relstart != NULL | |
8508 | && elf_section_data (sec)->relocs != relstart) | |
8509 | free (relstart); | |
425b145b AM |
8510 | if (toc_relocs != NULL |
8511 | && elf_section_data (toc)->relocs != toc_relocs) | |
8512 | free (toc_relocs); | |
c5614fa4 AM |
8513 | if (skip != NULL) |
8514 | free (skip); | |
8515 | return FALSE; | |
8516 | } | |
8517 | ||
30038c59 AM |
8518 | /* Now check all kept sections that might reference the toc. |
8519 | Check the toc itself last. */ | |
8520 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8521 | : ibfd->sections); | |
c5614fa4 | 8522 | sec != NULL; |
c5614fa4 | 8523 | sec = (sec == toc ? NULL |
c5614fa4 | 8524 | : sec->next == NULL ? toc |
30038c59 | 8525 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8526 | : sec->next)) |
8527 | { | |
8528 | int repeat; | |
8529 | ||
8530 | if (sec->reloc_count == 0 | |
dbaa2011 | 8531 | || discarded_section (sec) |
c5614fa4 AM |
8532 | || get_opd_info (sec) |
8533 | || (sec->flags & SEC_ALLOC) == 0 | |
8534 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8535 | continue; | |
8536 | ||
854b41e7 AM |
8537 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8538 | info->keep_memory); | |
c5614fa4 | 8539 | if (relstart == NULL) |
2915c55b JK |
8540 | { |
8541 | free (used); | |
8542 | goto error_ret; | |
8543 | } | |
c5614fa4 AM |
8544 | |
8545 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8546 | do |
d4f1ee75 AM |
8547 | { |
8548 | repeat = 0; | |
8549 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8550 | { | |
8551 | enum elf_ppc64_reloc_type r_type; | |
8552 | unsigned long r_symndx; | |
8553 | asection *sym_sec; | |
8554 | struct elf_link_hash_entry *h; | |
8555 | Elf_Internal_Sym *sym; | |
8556 | bfd_vma val; | |
8557 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8558 | |
d4f1ee75 AM |
8559 | r_type = ELF64_R_TYPE (rel->r_info); |
8560 | switch (r_type) | |
8561 | { | |
8562 | default: | |
8563 | insn_check = no_check; | |
8564 | break; | |
98528052 | 8565 | |
d4f1ee75 AM |
8566 | case R_PPC64_GOT_TLSLD16_HA: |
8567 | case R_PPC64_GOT_TLSGD16_HA: | |
8568 | case R_PPC64_GOT_TPREL16_HA: | |
8569 | case R_PPC64_GOT_DTPREL16_HA: | |
8570 | case R_PPC64_GOT16_HA: | |
8571 | case R_PPC64_TOC16_HA: | |
8572 | insn_check = check_ha; | |
8573 | break; | |
98528052 | 8574 | |
d4f1ee75 AM |
8575 | case R_PPC64_GOT_TLSLD16_LO: |
8576 | case R_PPC64_GOT_TLSGD16_LO: | |
8577 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8578 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8579 | case R_PPC64_GOT16_LO: | |
8580 | case R_PPC64_GOT16_LO_DS: | |
8581 | case R_PPC64_TOC16_LO: | |
8582 | case R_PPC64_TOC16_LO_DS: | |
8583 | insn_check = check_lo; | |
8584 | break; | |
8585 | } | |
560c8763 | 8586 | |
d4f1ee75 AM |
8587 | if (insn_check != no_check) |
8588 | { | |
8589 | bfd_vma off = rel->r_offset & ~3; | |
8590 | unsigned char buf[4]; | |
8591 | unsigned int insn; | |
c5614fa4 | 8592 | |
d4f1ee75 AM |
8593 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8594 | { | |
8595 | free (used); | |
8596 | goto error_ret; | |
8597 | } | |
8598 | insn = bfd_get_32 (ibfd, buf); | |
8599 | if (insn_check == check_lo | |
39eeab25 | 8600 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
8601 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
8602 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8603 | { | |
8604 | char str[12]; | |
8605 | ||
8606 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8607 | sprintf (str, "%#08x", insn); | |
8608 | info->callbacks->einfo | |
695344c0 | 8609 | /* xgettext:c-format */ |
174d0a74 | 8610 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 8611 | " %s instruction\n"), |
d4f1ee75 AM |
8612 | ibfd, sec, rel->r_offset & ~3, str); |
8613 | } | |
8614 | } | |
c5614fa4 | 8615 | |
d4f1ee75 AM |
8616 | switch (r_type) |
8617 | { | |
8618 | case R_PPC64_TOC16: | |
8619 | case R_PPC64_TOC16_LO: | |
8620 | case R_PPC64_TOC16_HI: | |
8621 | case R_PPC64_TOC16_HA: | |
8622 | case R_PPC64_TOC16_DS: | |
8623 | case R_PPC64_TOC16_LO_DS: | |
8624 | /* In case we're taking addresses of toc entries. */ | |
8625 | case R_PPC64_ADDR64: | |
8626 | break; | |
c5614fa4 | 8627 | |
d4f1ee75 AM |
8628 | default: |
8629 | continue; | |
8630 | } | |
c5614fa4 | 8631 | |
d4f1ee75 AM |
8632 | r_symndx = ELF64_R_SYM (rel->r_info); |
8633 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8634 | r_symndx, ibfd)) | |
8635 | { | |
8636 | free (used); | |
8637 | goto error_ret; | |
8638 | } | |
c5614fa4 | 8639 | |
d4f1ee75 AM |
8640 | if (sym_sec != toc) |
8641 | continue; | |
c5614fa4 | 8642 | |
d4f1ee75 AM |
8643 | if (h != NULL) |
8644 | val = h->root.u.def.value; | |
8645 | else | |
8646 | val = sym->st_value; | |
8647 | val += rel->r_addend; | |
ba761f19 | 8648 | |
d4f1ee75 AM |
8649 | if (val >= toc->size) |
8650 | continue; | |
ba761f19 | 8651 | |
d4f1ee75 AM |
8652 | if ((skip[val >> 3] & can_optimize) != 0) |
8653 | { | |
8654 | bfd_vma off; | |
8655 | unsigned char opc; | |
8656 | ||
8657 | switch (r_type) | |
8658 | { | |
8659 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8660 | break; |
ba761f19 | 8661 | |
d4f1ee75 AM |
8662 | case R_PPC64_TOC16_LO_DS: |
8663 | off = rel->r_offset; | |
8664 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8665 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8666 | off, 1)) | |
8667 | { | |
8668 | free (used); | |
8669 | goto error_ret; | |
8670 | } | |
8671 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8672 | break; | |
1a0670f3 | 8673 | /* Fall through. */ |
ba761f19 | 8674 | |
d4f1ee75 AM |
8675 | default: |
8676 | /* Wrong sort of reloc, or not a ld. We may | |
8677 | as well clear ref_from_discarded too. */ | |
8678 | skip[val >> 3] = 0; | |
8679 | } | |
8680 | } | |
8681 | ||
8682 | if (sec != toc) | |
8683 | used[val >> 3] = 1; | |
8684 | /* For the toc section, we only mark as used if this | |
8685 | entry itself isn't unused. */ | |
8686 | else if ((used[rel->r_offset >> 3] | |
8687 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8688 | && !used[val >> 3]) | |
8689 | { | |
8690 | /* Do all the relocs again, to catch reference | |
8691 | chains. */ | |
8692 | repeat = 1; | |
8693 | used[val >> 3] = 1; | |
8694 | } | |
8695 | } | |
8696 | } | |
c5614fa4 | 8697 | while (repeat); |
854b41e7 AM |
8698 | |
8699 | if (elf_section_data (sec)->relocs != relstart) | |
8700 | free (relstart); | |
c5614fa4 AM |
8701 | } |
8702 | ||
8703 | /* Merge the used and skip arrays. Assume that TOC | |
8704 | doublewords not appearing as either used or unused belong | |
de194d85 | 8705 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
8706 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
8707 | drop < skip + (toc->size + 7) / 8; | |
8708 | ++drop, ++keep) | |
8709 | { | |
8710 | if (*keep) | |
8711 | { | |
ba761f19 AM |
8712 | *drop &= ~ref_from_discarded; |
8713 | if ((*drop & can_optimize) != 0) | |
8714 | some_unused = 1; | |
c5614fa4 AM |
8715 | last = 0; |
8716 | } | |
b140b010 | 8717 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8718 | { |
8719 | some_unused = 1; | |
ba761f19 | 8720 | last = ref_from_discarded; |
c5614fa4 AM |
8721 | } |
8722 | else | |
8723 | *drop = last; | |
8724 | } | |
8725 | ||
8726 | free (used); | |
8727 | ||
8728 | if (some_unused) | |
8729 | { | |
8730 | bfd_byte *contents, *src; | |
8731 | unsigned long off; | |
d62b3684 | 8732 | Elf_Internal_Sym *sym; |
ba761f19 | 8733 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8734 | |
8735 | /* Shuffle the toc contents, and at the same time convert the | |
8736 | skip array from booleans into offsets. */ | |
8737 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8738 | goto error_ret; | |
8739 | ||
8740 | elf_section_data (toc)->this_hdr.contents = contents; | |
8741 | ||
8742 | for (src = contents, off = 0, drop = skip; | |
8743 | src < contents + toc->size; | |
8744 | src += 8, ++drop) | |
8745 | { | |
ba761f19 AM |
8746 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8747 | off += 8; | |
c5614fa4 AM |
8748 | else if (off != 0) |
8749 | { | |
8750 | *drop = off; | |
8751 | memcpy (src - off, src, 8); | |
8752 | } | |
8753 | } | |
854b41e7 | 8754 | *drop = off; |
c5614fa4 AM |
8755 | toc->rawsize = toc->size; |
8756 | toc->size = src - contents - off; | |
8757 | ||
ba761f19 AM |
8758 | /* Adjust addends for relocs against the toc section sym, |
8759 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8760 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8761 | { | |
8762 | if (sec->reloc_count == 0 | |
dbaa2011 | 8763 | || discarded_section (sec)) |
c5614fa4 AM |
8764 | continue; |
8765 | ||
8766 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8767 | info->keep_memory); |
c5614fa4 AM |
8768 | if (relstart == NULL) |
8769 | goto error_ret; | |
8770 | ||
8771 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8772 | { | |
8773 | enum elf_ppc64_reloc_type r_type; | |
8774 | unsigned long r_symndx; | |
8775 | asection *sym_sec; | |
8776 | struct elf_link_hash_entry *h; | |
854b41e7 | 8777 | bfd_vma val; |
c5614fa4 AM |
8778 | |
8779 | r_type = ELF64_R_TYPE (rel->r_info); | |
8780 | switch (r_type) | |
8781 | { | |
8782 | default: | |
8783 | continue; | |
8784 | ||
8785 | case R_PPC64_TOC16: | |
8786 | case R_PPC64_TOC16_LO: | |
8787 | case R_PPC64_TOC16_HI: | |
8788 | case R_PPC64_TOC16_HA: | |
8789 | case R_PPC64_TOC16_DS: | |
8790 | case R_PPC64_TOC16_LO_DS: | |
8791 | case R_PPC64_ADDR64: | |
8792 | break; | |
8793 | } | |
8794 | ||
8795 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8796 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8797 | r_symndx, ibfd)) | |
8798 | goto error_ret; | |
8799 | ||
ba761f19 | 8800 | if (sym_sec != toc) |
c5614fa4 AM |
8801 | continue; |
8802 | ||
ba761f19 AM |
8803 | if (h != NULL) |
8804 | val = h->root.u.def.value; | |
8805 | else | |
8806 | { | |
8807 | val = sym->st_value; | |
8808 | if (val != 0) | |
8809 | local_toc_syms = TRUE; | |
8810 | } | |
8811 | ||
8812 | val += rel->r_addend; | |
854b41e7 AM |
8813 | |
8814 | if (val > toc->rawsize) | |
8815 | val = toc->rawsize; | |
ba761f19 AM |
8816 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8817 | continue; | |
8818 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8819 | { | |
8820 | Elf_Internal_Rela *tocrel | |
425b145b | 8821 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
8822 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
8823 | ||
8824 | switch (r_type) | |
8825 | { | |
8826 | case R_PPC64_TOC16_HA: | |
8827 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8828 | break; | |
8829 | ||
8830 | case R_PPC64_TOC16_LO_DS: | |
8831 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8832 | break; | |
8833 | ||
8834 | default: | |
28942f62 AM |
8835 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
8836 | ppc_howto_init (); | |
b140b010 | 8837 | info->callbacks->einfo |
695344c0 | 8838 | /* xgettext:c-format */ |
174d0a74 | 8839 | (_("%H: %s references " |
b140b010 AM |
8840 | "optimized away TOC entry\n"), |
8841 | ibfd, sec, rel->r_offset, | |
8842 | ppc64_elf_howto_table[r_type]->name); | |
8843 | bfd_set_error (bfd_error_bad_value); | |
8844 | goto error_ret; | |
ba761f19 AM |
8845 | } |
8846 | rel->r_addend = tocrel->r_addend; | |
8847 | elf_section_data (sec)->relocs = relstart; | |
8848 | continue; | |
8849 | } | |
8850 | ||
8851 | if (h != NULL || sym->st_value != 0) | |
8852 | continue; | |
854b41e7 AM |
8853 | |
8854 | rel->r_addend -= skip[val >> 3]; | |
8855 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8856 | } |
854b41e7 AM |
8857 | |
8858 | if (elf_section_data (sec)->relocs != relstart) | |
8859 | free (relstart); | |
c5614fa4 AM |
8860 | } |
8861 | ||
8862 | /* We shouldn't have local or global symbols defined in the TOC, | |
8863 | but handle them anyway. */ | |
df22d223 AM |
8864 | if (local_syms != NULL) |
8865 | for (sym = local_syms; | |
8866 | sym < local_syms + symtab_hdr->sh_info; | |
8867 | ++sym) | |
8868 | if (sym->st_value != 0 | |
8869 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8870 | { | |
8871 | unsigned long i; | |
854b41e7 | 8872 | |
df22d223 AM |
8873 | if (sym->st_value > toc->rawsize) |
8874 | i = toc->rawsize >> 3; | |
8875 | else | |
8876 | i = sym->st_value >> 3; | |
854b41e7 | 8877 | |
df22d223 AM |
8878 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8879 | { | |
8880 | if (local_toc_syms) | |
4eca0228 | 8881 | _bfd_error_handler |
df22d223 AM |
8882 | (_("%s defined on removed toc entry"), |
8883 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8884 | do | |
8885 | ++i; | |
8886 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8887 | sym->st_value = (bfd_vma) i << 3; | |
8888 | } | |
d62b3684 | 8889 | |
df22d223 AM |
8890 | sym->st_value -= skip[i]; |
8891 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8892 | } | |
c5614fa4 | 8893 | |
854b41e7 | 8894 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8895 | if (toc_inf.global_toc_syms) |
8896 | { | |
8897 | toc_inf.toc = toc; | |
8898 | toc_inf.skip = skip; | |
8899 | toc_inf.global_toc_syms = FALSE; | |
8900 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8901 | &toc_inf); | |
8902 | } | |
854b41e7 AM |
8903 | |
8904 | if (toc->reloc_count != 0) | |
8905 | { | |
d4730f92 | 8906 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8907 | Elf_Internal_Rela *wrel; |
8908 | bfd_size_type sz; | |
8909 | ||
854b41e7 | 8910 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
8911 | if (toc_relocs == NULL) |
8912 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8913 | info->keep_memory); | |
8914 | if (toc_relocs == NULL) | |
8915 | goto error_ret; | |
8916 | ||
425b145b AM |
8917 | wrel = toc_relocs; |
8918 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
8919 | if ((skip[rel->r_offset >> 3] |
8920 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8921 | { |
8922 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8923 | wrel->r_info = rel->r_info; | |
8924 | wrel->r_addend = rel->r_addend; | |
8925 | ++wrel; | |
8926 | } | |
8927 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
8928 | &local_syms, NULL, NULL)) | |
8929 | goto error_ret; | |
8930 | ||
425b145b AM |
8931 | elf_section_data (toc)->relocs = toc_relocs; |
8932 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
8933 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
8934 | sz = rel_hdr->sh_entsize; | |
8935 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 8936 | } |
c5614fa4 | 8937 | } |
28be611c AM |
8938 | else if (toc_relocs != NULL |
8939 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 8940 | free (toc_relocs); |
c5614fa4 AM |
8941 | |
8942 | if (local_syms != NULL | |
8943 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8944 | { | |
8945 | if (!info->keep_memory) | |
8946 | free (local_syms); | |
8947 | else | |
8948 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8949 | } | |
8950 | free (skip); | |
8951 | } | |
8952 | ||
066f4018 | 8953 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
8954 | a GOT relative or PC relative access, possibly reducing the |
8955 | number of GOT entries. */ | |
066f4018 AM |
8956 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
8957 | { | |
8958 | asection *sec; | |
8959 | Elf_Internal_Shdr *symtab_hdr; | |
8960 | Elf_Internal_Sym *local_syms; | |
8961 | Elf_Internal_Rela *relstart, *rel; | |
8962 | bfd_vma got; | |
8963 | ||
8964 | if (!is_ppc64_elf (ibfd)) | |
8965 | continue; | |
8966 | ||
8967 | if (!ppc64_elf_tdata (ibfd)->has_gotrel) | |
8968 | continue; | |
8969 | ||
8970 | sec = ppc64_elf_tdata (ibfd)->got; | |
8971 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
8972 | ||
8973 | local_syms = NULL; | |
8974 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8975 | ||
8976 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8977 | { | |
8978 | if (sec->reloc_count == 0 | |
8979 | || !ppc64_elf_section_data (sec)->has_gotrel | |
8980 | || discarded_section (sec)) | |
8981 | continue; | |
8982 | ||
8983 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8984 | info->keep_memory); | |
8985 | if (relstart == NULL) | |
8986 | { | |
8987 | got_error_ret: | |
8988 | if (local_syms != NULL | |
8989 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8990 | free (local_syms); | |
8991 | if (sec != NULL | |
8992 | && relstart != NULL | |
8993 | && elf_section_data (sec)->relocs != relstart) | |
8994 | free (relstart); | |
8995 | return FALSE; | |
8996 | } | |
8997 | ||
8998 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8999 | { | |
9000 | enum elf_ppc64_reloc_type r_type; | |
9001 | unsigned long r_symndx; | |
9002 | Elf_Internal_Sym *sym; | |
9003 | asection *sym_sec; | |
9004 | struct elf_link_hash_entry *h; | |
9005 | struct got_entry *ent; | |
4a421c53 AM |
9006 | bfd_vma sym_addend, val, pc; |
9007 | unsigned char buf[8]; | |
066f4018 AM |
9008 | unsigned int insn; |
9009 | ||
9010 | r_type = ELF64_R_TYPE (rel->r_info); | |
9011 | switch (r_type) | |
9012 | { | |
bb22a418 AM |
9013 | /* Note that we don't delete GOT entries for |
9014 | R_PPC64_GOT16_DS since we'd need a lot more | |
9015 | analysis. For starters, the preliminary layout is | |
9016 | before the GOT, PLT, dynamic sections and stubs are | |
9017 | laid out. Then we'd need to allow for changes in | |
9018 | distance between sections caused by alignment. */ | |
066f4018 AM |
9019 | default: |
9020 | continue; | |
9021 | ||
066f4018 AM |
9022 | case R_PPC64_GOT16_HA: |
9023 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 AM |
9024 | sym_addend = rel->r_addend; |
9025 | break; | |
9026 | ||
9027 | case R_PPC64_GOT_PCREL34: | |
9028 | sym_addend = 0; | |
066f4018 AM |
9029 | break; |
9030 | } | |
9031 | ||
9032 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9033 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9034 | r_symndx, ibfd)) | |
9035 | goto got_error_ret; | |
9036 | ||
9037 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) | |
9038 | continue; | |
9039 | ||
9040 | if (h != NULL) | |
9041 | val = h->root.u.def.value; | |
9042 | else | |
9043 | val = sym->st_value; | |
4a421c53 | 9044 | val += sym_addend; |
066f4018 AM |
9045 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9046 | ||
bb22a418 AM |
9047 | /* Fudge factor to allow for the fact that the preliminary layout |
9048 | isn't exact. Reduce limits by this factor. */ | |
9049 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9050 | ||
066f4018 AM |
9051 | switch (r_type) |
9052 | { | |
9053 | default: | |
9054 | continue; | |
9055 | ||
066f4018 | 9056 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9057 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9058 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9059 | continue; |
9060 | ||
9061 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9062 | rel->r_offset & ~3, 4)) | |
9063 | goto got_error_ret; | |
9064 | insn = bfd_get_32 (ibfd, buf); | |
9065 | if (((insn & ((0x3f << 26) | 0x1f << 16)) | |
9066 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9067 | continue; | |
9068 | break; | |
9069 | ||
9070 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9071 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9072 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9073 | continue; |
9074 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9075 | rel->r_offset & ~3, 4)) | |
9076 | goto got_error_ret; | |
9077 | insn = bfd_get_32 (ibfd, buf); | |
9078 | if ((insn & (0x3f << 26 | 0x3)) != 58u << 26 /* ld */) | |
9079 | continue; | |
9080 | break; | |
4a421c53 AM |
9081 | |
9082 | case R_PPC64_GOT_PCREL34: | |
9083 | pc = rel->r_offset; | |
9084 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9085 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9086 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9087 | continue; |
9088 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9089 | rel->r_offset & ~3, 8)) | |
9090 | goto got_error_ret; | |
9091 | insn = bfd_get_32 (ibfd, buf); | |
9092 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9093 | continue; | |
9094 | insn = bfd_get_32 (ibfd, buf + 4); | |
9095 | if ((insn & (0x3f << 26)) != 57u << 26) | |
9096 | continue; | |
9097 | break; | |
066f4018 | 9098 | } |
bb22a418 | 9099 | #undef LIMIT_ADJUST |
066f4018 AM |
9100 | |
9101 | if (h != NULL) | |
9102 | ent = h->got.glist; | |
9103 | else | |
9104 | { | |
9105 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9106 | ent = local_got_ents[r_symndx]; | |
9107 | } | |
9108 | for (; ent != NULL; ent = ent->next) | |
4a421c53 | 9109 | if (ent->addend == sym_addend |
066f4018 AM |
9110 | && ent->owner == ibfd |
9111 | && ent->tls_type == 0) | |
9112 | break; | |
9113 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9114 | ent->got.refcount -= 1; | |
9115 | } | |
9116 | ||
9117 | if (elf_section_data (sec)->relocs != relstart) | |
9118 | free (relstart); | |
9119 | } | |
9120 | ||
9121 | if (local_syms != NULL | |
9122 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9123 | { | |
9124 | if (!info->keep_memory) | |
9125 | free (local_syms); | |
9126 | else | |
9127 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9128 | } | |
9129 | } | |
9130 | ||
c5614fa4 AM |
9131 | return TRUE; |
9132 | } | |
9133 | ||
1bbe0902 AM |
9134 | /* Return true iff input section I references the TOC using |
9135 | instructions limited to +/-32k offsets. */ | |
9136 | ||
9137 | bfd_boolean | |
9138 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9139 | { | |
9140 | return (is_ppc64_elf (i->owner) | |
9141 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9142 | } | |
9143 | ||
927be08e AM |
9144 | /* Allocate space for one GOT entry. */ |
9145 | ||
9146 | static void | |
9147 | allocate_got (struct elf_link_hash_entry *h, | |
9148 | struct bfd_link_info *info, | |
9149 | struct got_entry *gent) | |
9150 | { | |
9151 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9152 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9153 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9154 | ? 16 : 8); | |
9155 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9156 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9157 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9158 | ||
9159 | gent->got.offset = got->size; | |
9160 | got->size += entsize; | |
9161 | ||
19e08130 | 9162 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9163 | { |
33e44f2e | 9164 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9165 | htab->got_reli_size += rentsize; |
927be08e | 9166 | } |
f15d0b54 AM |
9167 | else if (((bfd_link_pic (info) |
9168 | && !((gent->tls_type & TLS_TPREL) != 0 | |
9169 | && bfd_link_executable (info) | |
9170 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9171 | || (htab->elf.dynamic_sections_created |
9172 | && h->dynindx != -1 | |
9173 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9174 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9175 | { |
19e08130 | 9176 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9177 | relgot->size += rentsize; |
927be08e AM |
9178 | } |
9179 | } | |
9180 | ||
7865406b AM |
9181 | /* This function merges got entries in the same toc group. */ |
9182 | ||
9183 | static void | |
9184 | merge_got_entries (struct got_entry **pent) | |
9185 | { | |
9186 | struct got_entry *ent, *ent2; | |
9187 | ||
9188 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9189 | if (!ent->is_indirect) | |
9190 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9191 | if (!ent2->is_indirect | |
9192 | && ent2->addend == ent->addend | |
9193 | && ent2->tls_type == ent->tls_type | |
9194 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9195 | { | |
9196 | ent2->is_indirect = TRUE; | |
9197 | ent2->got.ent = ent; | |
9198 | } | |
9199 | } | |
9200 | ||
46434633 | 9201 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9202 | |
9203 | static bfd_boolean | |
46434633 AM |
9204 | ensure_undef_dynamic (struct bfd_link_info *info, |
9205 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9206 | { |
9207 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9208 | ||
9209 | if (htab->dynamic_sections_created | |
46434633 AM |
9210 | && ((info->dynamic_undefined_weak != 0 |
9211 | && h->root.type == bfd_link_hash_undefweak) | |
9212 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9213 | && h->dynindx == -1 |
9214 | && !h->forced_local | |
9215 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9216 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9217 | return TRUE; | |
9218 | } | |
9219 | ||
65f38f15 AM |
9220 | /* Allocate space in .plt, .got and associated reloc sections for |
9221 | dynamic relocs. */ | |
5bd4f169 | 9222 | |
b34976b6 | 9223 | static bfd_boolean |
4ce794b7 | 9224 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9225 | { |
65f38f15 AM |
9226 | struct bfd_link_info *info; |
9227 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9228 | asection *s; |
65f38f15 | 9229 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9230 | struct got_entry **pgent, *gent; |
5bd4f169 | 9231 | |
e92d460e | 9232 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9233 | return TRUE; |
5bd4f169 | 9234 | |
65f38f15 AM |
9235 | info = (struct bfd_link_info *) inf; |
9236 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9237 | if (htab == NULL) |
9238 | return FALSE; | |
5bd4f169 | 9239 | |
951fd09b AM |
9240 | eh = (struct ppc_link_hash_entry *) h; |
9241 | /* Run through the TLS GD got entries first if we're changing them | |
9242 | to TPREL. */ | |
37da22e5 | 9243 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
9244 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9245 | if (gent->got.refcount > 0 | |
9246 | && (gent->tls_type & TLS_GD) != 0) | |
9247 | { | |
9248 | /* This was a GD entry that has been converted to TPREL. If | |
9249 | there happens to be a TPREL entry we can use that one. */ | |
9250 | struct got_entry *ent; | |
9251 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9252 | if (ent->got.refcount > 0 | |
9253 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9254 | && ent->addend == gent->addend |
9255 | && ent->owner == gent->owner) | |
951fd09b AM |
9256 | { |
9257 | gent->got.refcount = 0; | |
9258 | break; | |
9259 | } | |
9260 | ||
9261 | /* If not, then we'll be using our own TPREL entry. */ | |
9262 | if (gent->got.refcount != 0) | |
9263 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9264 | } | |
9265 | ||
7865406b AM |
9266 | /* Remove any list entry that won't generate a word in the GOT before |
9267 | we call merge_got_entries. Otherwise we risk merging to empty | |
9268 | entries. */ | |
0b8bcf0d AM |
9269 | pgent = &h->got.glist; |
9270 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9271 | if (gent->got.refcount > 0) |
7865406b AM |
9272 | { |
9273 | if ((gent->tls_type & TLS_LD) != 0 | |
9274 | && !h->def_dynamic) | |
9275 | { | |
9276 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9277 | *pgent = gent->next; | |
9278 | } | |
9279 | else | |
9280 | pgent = &gent->next; | |
9281 | } | |
9282 | else | |
9283 | *pgent = gent->next; | |
9284 | ||
9285 | if (!htab->do_multi_toc) | |
9286 | merge_got_entries (&h->got.glist); | |
9287 | ||
9288 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9289 | if (!gent->is_indirect) | |
411e1bfb | 9290 | { |
46434633 AM |
9291 | /* Make sure this symbol is output as a dynamic symbol. */ |
9292 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9293 | return FALSE; |
65f38f15 | 9294 | |
0c8d6e5c | 9295 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9296 | abort (); |
0ffa91dd | 9297 | |
927be08e | 9298 | allocate_got (h, info, gent); |
411e1bfb | 9299 | } |
65f38f15 | 9300 | |
954b63d4 AM |
9301 | /* If no dynamic sections we can't have dynamic relocs, except for |
9302 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9303 | if (!htab->elf.dynamic_sections_created |
9304 | && h->type != STT_GNU_IFUNC) | |
9305 | eh->dyn_relocs = NULL; | |
9306 | ||
529fe20e AM |
9307 | /* Discard relocs on undefined symbols that must be local. */ |
9308 | else if (h->root.type == bfd_link_hash_undefined | |
9309 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9310 | eh->dyn_relocs = NULL; | |
9311 | ||
954b63d4 AM |
9312 | /* Also discard relocs on undefined weak syms with non-default |
9313 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9314 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
9315 | eh->dyn_relocs = NULL; |
9316 | ||
8a2058b5 | 9317 | if (eh->dyn_relocs != NULL) |
65f38f15 | 9318 | { |
8a2058b5 AM |
9319 | struct elf_dyn_relocs *p, **pp; |
9320 | ||
57e7d118 AM |
9321 | /* In the shared -Bsymbolic case, discard space allocated for |
9322 | dynamic pc-relative relocs against symbols which turn out to | |
9323 | be defined in regular objects. For the normal shared case, | |
9324 | discard space for relocs that have become local due to symbol | |
9325 | visibility changes. */ | |
9326 | ||
9327 | if (bfd_link_pic (info)) | |
65f38f15 | 9328 | { |
57e7d118 AM |
9329 | /* Relocs that use pc_count are those that appear on a call |
9330 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9331 | can be generated via assembly. We want calls to | |
9332 | protected symbols to resolve directly to the function | |
9333 | rather than going via the plt. If people want function | |
9334 | pointer comparisons to work as expected then they should | |
9335 | avoid writing weird assembly. */ | |
9336 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9337 | { | |
57e7d118 AM |
9338 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
9339 | { | |
9340 | p->count -= p->pc_count; | |
9341 | p->pc_count = 0; | |
9342 | if (p->count == 0) | |
9343 | *pp = p->next; | |
9344 | else | |
9345 | pp = &p->next; | |
9346 | } | |
9347 | } | |
65f38f15 | 9348 | |
954b63d4 | 9349 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 9350 | { |
46434633 AM |
9351 | /* Make sure this symbol is output as a dynamic symbol. */ |
9352 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9353 | return FALSE; |
5bd4f169 | 9354 | } |
65f38f15 | 9355 | } |
529fe20e | 9356 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 9357 | { |
8a2058b5 | 9358 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
9359 | symbols which turn out to need copy relocs or are not |
9360 | dynamic. */ | |
529fe20e AM |
9361 | if (h->dynamic_adjusted |
9362 | && !h->def_regular | |
9363 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9364 | { |
46434633 AM |
9365 | /* Make sure this symbol is output as a dynamic symbol. */ |
9366 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9367 | return FALSE; |
dfbb6ac9 | 9368 | |
f0158f44 AM |
9369 | if (h->dynindx == -1) |
9370 | eh->dyn_relocs = NULL; | |
9371 | } | |
9372 | else | |
8a2058b5 | 9373 | eh->dyn_relocs = NULL; |
57e7d118 AM |
9374 | } |
9375 | ||
9376 | /* Finally, allocate space. */ | |
9377 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9378 | { | |
9379 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9380 | if (eh->elf.type == STT_GNU_IFUNC) | |
9381 | sreloc = htab->elf.irelplt; | |
9382 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9383 | } |
65f38f15 | 9384 | } |
57e7d118 | 9385 | |
2d7ad24e AM |
9386 | /* We might need a PLT entry when the symbol |
9387 | a) is dynamic, or | |
9388 | b) is an ifunc, or | |
9389 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9390 | d) has plt16 relocs and we are linking statically. */ | |
9391 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9392 | || h->type == STT_GNU_IFUNC | |
9393 | || (h->needs_plt && h->dynamic_adjusted) | |
9394 | || (h->needs_plt | |
9395 | && h->def_regular | |
9396 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9397 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
9398 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
9399 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 9400 | { |
57e7d118 AM |
9401 | struct plt_entry *pent; |
9402 | bfd_boolean doneone = FALSE; | |
9403 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9404 | if (pent->plt.refcount > 0) | |
9405 | { | |
9406 | if (!htab->elf.dynamic_sections_created | |
9407 | || h->dynindx == -1) | |
9408 | { | |
2d7ad24e AM |
9409 | if (h->type == STT_GNU_IFUNC) |
9410 | { | |
9411 | s = htab->elf.iplt; | |
9412 | pent->plt.offset = s->size; | |
9413 | s->size += PLT_ENTRY_SIZE (htab); | |
9414 | s = htab->elf.irelplt; | |
9415 | } | |
9416 | else | |
9417 | { | |
9418 | s = htab->pltlocal; | |
9419 | pent->plt.offset = s->size; | |
9420 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9421 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9422 | } | |
57e7d118 AM |
9423 | } |
9424 | else | |
9425 | { | |
9426 | /* If this is the first .plt entry, make room for the special | |
9427 | first entry. */ | |
9428 | s = htab->elf.splt; | |
9429 | if (s->size == 0) | |
9430 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9431 | |
57e7d118 | 9432 | pent->plt.offset = s->size; |
65f38f15 | 9433 | |
57e7d118 AM |
9434 | /* Make room for this entry. */ |
9435 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9436 | |
57e7d118 AM |
9437 | /* Make room for the .glink code. */ |
9438 | s = htab->glink; | |
9439 | if (s->size == 0) | |
9e390558 | 9440 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9441 | if (htab->opd_abi) |
9442 | { | |
9443 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9444 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9445 | s->size += 4; |
9446 | s->size += 2*4; | |
9447 | } | |
9448 | else | |
9449 | s->size += 4; | |
65f38f15 | 9450 | |
57e7d118 AM |
9451 | /* We also need to make an entry in the .rela.plt section. */ |
9452 | s = htab->elf.srelplt; | |
9453 | } | |
2d7ad24e AM |
9454 | if (s != NULL) |
9455 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
9456 | doneone = TRUE; |
9457 | } | |
9458 | else | |
9459 | pent->plt.offset = (bfd_vma) -1; | |
9460 | if (!doneone) | |
9461 | { | |
9462 | h->plt.plist = NULL; | |
9463 | h->needs_plt = 0; | |
9464 | } | |
65f38f15 | 9465 | } |
57e7d118 | 9466 | else |
65f38f15 | 9467 | { |
57e7d118 AM |
9468 | h->plt.plist = NULL; |
9469 | h->needs_plt = 0; | |
65f38f15 AM |
9470 | } |
9471 | ||
b34976b6 | 9472 | return TRUE; |
65f38f15 AM |
9473 | } |
9474 | ||
9e390558 AM |
9475 | #define PPC_LO(v) ((v) & 0xffff) |
9476 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9477 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
9478 | #define D34(v) \ |
9479 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
9480 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 9481 | |
a345bc8d AM |
9482 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9483 | to set up space for global entry stubs. These are put in glink, | |
9484 | after the branch table. */ | |
65f38f15 | 9485 | |
b34976b6 | 9486 | static bfd_boolean |
a345bc8d | 9487 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9488 | { |
a345bc8d AM |
9489 | struct bfd_link_info *info; |
9490 | struct ppc_link_hash_table *htab; | |
9491 | struct plt_entry *pent; | |
9e390558 | 9492 | asection *s, *plt; |
65f38f15 | 9493 | |
a345bc8d AM |
9494 | if (h->root.type == bfd_link_hash_indirect) |
9495 | return TRUE; | |
65f38f15 | 9496 | |
a345bc8d AM |
9497 | if (!h->pointer_equality_needed) |
9498 | return TRUE; | |
65f38f15 | 9499 | |
a345bc8d AM |
9500 | if (h->def_regular) |
9501 | return TRUE; | |
65f38f15 | 9502 | |
a345bc8d AM |
9503 | info = inf; |
9504 | htab = ppc_hash_table (info); | |
9505 | if (htab == NULL) | |
9506 | return FALSE; | |
9507 | ||
9e390558 AM |
9508 | s = htab->global_entry; |
9509 | plt = htab->elf.splt; | |
a345bc8d AM |
9510 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9511 | if (pent->plt.offset != (bfd_vma) -1 | |
9512 | && pent->addend == 0) | |
9513 | { | |
afe397ea AM |
9514 | /* For ELFv2, if this symbol is not defined in a regular file |
9515 | and we are not generating a shared library or pie, then we | |
9516 | need to define the symbol in the executable on a call stub. | |
9517 | This is to avoid text relocations. */ | |
9e390558 AM |
9518 | bfd_vma off, stub_align, stub_off, stub_size; |
9519 | unsigned int align_power; | |
9520 | ||
9521 | stub_size = 16; | |
9522 | stub_off = s->size; | |
9523 | if (htab->params->plt_stub_align >= 0) | |
9524 | align_power = htab->params->plt_stub_align; | |
9525 | else | |
9526 | align_power = -htab->params->plt_stub_align; | |
9527 | /* Setting section alignment is delayed until we know it is | |
9528 | non-empty. Otherwise the .text output section will be | |
9529 | aligned at least to plt_stub_align even when no global | |
9530 | entry stubs are needed. */ | |
9531 | if (s->alignment_power < align_power) | |
9532 | s->alignment_power = align_power; | |
9533 | stub_align = (bfd_vma) 1 << align_power; | |
9534 | if (htab->params->plt_stub_align >= 0 | |
9535 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9536 | - (stub_off & -stub_align)) | |
9537 | > ((stub_size - 1) & -stub_align))) | |
9538 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9539 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9540 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9541 | /* Note that for --plt-stub-align negative we have a possible | |
9542 | dependency between stub offset and size. Break that | |
9543 | dependency by assuming the max stub size when calculating | |
9544 | the stub offset. */ | |
9545 | if (PPC_HA (off) == 0) | |
9546 | stub_size -= 4; | |
8a2058b5 | 9547 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9548 | h->root.u.def.section = s; |
9e390558 AM |
9549 | h->root.u.def.value = stub_off; |
9550 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9551 | break; |
9552 | } | |
9553 | return TRUE; | |
9554 | } | |
9555 | ||
9556 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9557 | read-only sections. */ | |
9558 | ||
9559 | static bfd_boolean | |
98bbb1b8 | 9560 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 9561 | { |
98bbb1b8 AM |
9562 | asection *sec; |
9563 | ||
a345bc8d AM |
9564 | if (h->root.type == bfd_link_hash_indirect) |
9565 | return TRUE; | |
9566 | ||
98bbb1b8 AM |
9567 | sec = readonly_dynrelocs (h); |
9568 | if (sec != NULL) | |
a345bc8d | 9569 | { |
98bbb1b8 AM |
9570 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
9571 | ||
9572 | info->flags |= DF_TEXTREL; | |
2cdcc330 AM |
9573 | info->callbacks->minfo (_("%pB: dynamic relocation against `%pT'" |
9574 | " in read-only section `%pA'\n"), | |
9575 | sec->owner, h->root.root.string, sec); | |
a345bc8d AM |
9576 | |
9577 | /* Not an error, just cut short the traversal. */ | |
9578 | return FALSE; | |
65f38f15 | 9579 | } |
b34976b6 | 9580 | return TRUE; |
65f38f15 AM |
9581 | } |
9582 | ||
9583 | /* Set the sizes of the dynamic sections. */ | |
9584 | ||
b34976b6 | 9585 | static bfd_boolean |
ee67d69a | 9586 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9587 | struct bfd_link_info *info) |
65f38f15 AM |
9588 | { |
9589 | struct ppc_link_hash_table *htab; | |
9590 | bfd *dynobj; | |
9591 | asection *s; | |
b34976b6 | 9592 | bfd_boolean relocs; |
65f38f15 | 9593 | bfd *ibfd; |
7865406b | 9594 | struct got_entry *first_tlsld; |
65f38f15 AM |
9595 | |
9596 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9597 | if (htab == NULL) |
9598 | return FALSE; | |
9599 | ||
65f38f15 AM |
9600 | dynobj = htab->elf.dynobj; |
9601 | if (dynobj == NULL) | |
9602 | abort (); | |
9603 | ||
9604 | if (htab->elf.dynamic_sections_created) | |
9605 | { | |
9606 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9607 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9608 | { |
3d4d4302 | 9609 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9610 | if (s == NULL) |
9611 | abort (); | |
eea6121a | 9612 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9613 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9614 | } | |
9615 | } | |
9616 | ||
9617 | /* Set up .got offsets for local syms, and space for local dynamic | |
9618 | relocs. */ | |
c72f2fb2 | 9619 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9620 | { |
411e1bfb AM |
9621 | struct got_entry **lgot_ents; |
9622 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9623 | struct plt_entry **local_plt; |
9624 | struct plt_entry **end_local_plt; | |
f961d9dd | 9625 | unsigned char *lgot_masks; |
65f38f15 AM |
9626 | bfd_size_type locsymcount; |
9627 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9628 | |
0c8d6e5c | 9629 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9630 | continue; |
9631 | ||
9632 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9633 | { | |
19e08130 | 9634 | struct ppc_dyn_relocs *p; |
65f38f15 | 9635 | |
6edfbbad | 9636 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9637 | { |
ec338859 AM |
9638 | if (!bfd_is_abs_section (p->sec) |
9639 | && bfd_is_abs_section (p->sec->output_section)) | |
9640 | { | |
9641 | /* Input section has been discarded, either because | |
9642 | it is a copy of a linkonce section or due to | |
9643 | linker script /DISCARD/, so we'll be discarding | |
9644 | the relocs too. */ | |
9645 | } | |
248866a8 | 9646 | else if (p->count != 0) |
ec338859 | 9647 | { |
19e08130 AM |
9648 | asection *srel = elf_section_data (p->sec)->sreloc; |
9649 | if (p->ifunc) | |
33e44f2e | 9650 | srel = htab->elf.irelplt; |
eea6121a | 9651 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9652 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9653 | info->flags |= DF_TEXTREL; | |
ec338859 | 9654 | } |
65f38f15 AM |
9655 | } |
9656 | } | |
9657 | ||
411e1bfb AM |
9658 | lgot_ents = elf_local_got_ents (ibfd); |
9659 | if (!lgot_ents) | |
65f38f15 AM |
9660 | continue; |
9661 | ||
0ffa91dd | 9662 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9663 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9664 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9665 | local_plt = (struct plt_entry **) end_lgot_ents; |
9666 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9667 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9668 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9669 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9670 | { |
0b8bcf0d | 9671 | struct got_entry **pent, *ent; |
411e1bfb | 9672 | |
0b8bcf0d AM |
9673 | pent = lgot_ents; |
9674 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9675 | if (ent->got.refcount > 0) |
9676 | { | |
e7b938ca | 9677 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9678 | { |
927be08e | 9679 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9680 | *pent = ent->next; |
411e1bfb AM |
9681 | } |
9682 | else | |
9683 | { | |
19e08130 AM |
9684 | unsigned int ent_size = 8; |
9685 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9686 | ||
eea6121a | 9687 | ent->got.offset = s->size; |
e7b938ca | 9688 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9689 | { |
19e08130 AM |
9690 | ent_size *= 2; |
9691 | rel_size *= 2; | |
9692 | } | |
9693 | s->size += ent_size; | |
37da22e5 | 9694 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 9695 | { |
33e44f2e | 9696 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9697 | htab->got_reli_size += rel_size; |
9698 | } | |
f15d0b54 AM |
9699 | else if (bfd_link_pic (info) |
9700 | && !((ent->tls_type & TLS_TPREL) != 0 | |
9701 | && bfd_link_executable (info))) | |
19e08130 AM |
9702 | { |
9703 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9704 | srel->size += rel_size; | |
927be08e | 9705 | } |
0b8bcf0d | 9706 | pent = &ent->next; |
411e1bfb AM |
9707 | } |
9708 | } | |
9709 | else | |
0b8bcf0d | 9710 | *pent = ent->next; |
65f38f15 | 9711 | } |
e054468f | 9712 | |
2d7ad24e AM |
9713 | /* Allocate space for plt calls to local syms. */ |
9714 | lgot_masks = (unsigned char *) end_local_plt; | |
9715 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
9716 | { |
9717 | struct plt_entry *ent; | |
9718 | ||
9719 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9720 | if (ent->plt.refcount > 0) | |
9721 | { | |
2d7ad24e AM |
9722 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
9723 | { | |
9724 | s = htab->elf.iplt; | |
9725 | ent->plt.offset = s->size; | |
9726 | s->size += PLT_ENTRY_SIZE (htab); | |
9727 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
9728 | } | |
3e04d765 AM |
9729 | else if (htab->can_convert_all_inline_plt |
9730 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
9731 | ent->plt.offset = (bfd_vma) -1; |
9732 | else | |
9733 | { | |
9734 | s = htab->pltlocal; | |
9735 | ent->plt.offset = s->size; | |
9736 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9737 | if (bfd_link_pic (info)) | |
9738 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
9739 | } | |
e054468f AM |
9740 | } |
9741 | else | |
9742 | ent->plt.offset = (bfd_vma) -1; | |
9743 | } | |
65f38f15 AM |
9744 | } |
9745 | ||
9746 | /* Allocate global sym .plt and .got entries, and space for global | |
9747 | sym dynamic relocs. */ | |
4ce794b7 | 9748 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 9749 | |
0e1862bb | 9750 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 9751 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 9752 | |
7865406b | 9753 | first_tlsld = NULL; |
c72f2fb2 | 9754 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 9755 | { |
7865406b AM |
9756 | struct got_entry *ent; |
9757 | ||
0c8d6e5c | 9758 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9759 | continue; |
9760 | ||
7865406b AM |
9761 | ent = ppc64_tlsld_got (ibfd); |
9762 | if (ent->got.refcount > 0) | |
102890f0 | 9763 | { |
7865406b | 9764 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9765 | { |
7865406b AM |
9766 | ent->is_indirect = TRUE; |
9767 | ent->got.ent = first_tlsld; | |
9768 | } | |
9769 | else | |
9770 | { | |
9771 | if (first_tlsld == NULL) | |
9772 | first_tlsld = ent; | |
9773 | s = ppc64_elf_tdata (ibfd)->got; | |
9774 | ent->got.offset = s->size; | |
9775 | ent->owner = ibfd; | |
9776 | s->size += 16; | |
0e1862bb | 9777 | if (bfd_link_pic (info)) |
7865406b AM |
9778 | { |
9779 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9780 | srel->size += sizeof (Elf64_External_Rela); | |
9781 | } | |
102890f0 AM |
9782 | } |
9783 | } | |
9784 | else | |
7865406b | 9785 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9786 | } |
9787 | ||
65f38f15 AM |
9788 | /* We now have determined the sizes of the various dynamic sections. |
9789 | Allocate memory for them. */ | |
b34976b6 | 9790 | relocs = FALSE; |
65f38f15 AM |
9791 | for (s = dynobj->sections; s != NULL; s = s->next) |
9792 | { | |
9793 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9794 | continue; | |
9795 | ||
4ce794b7 | 9796 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9797 | /* These haven't been allocated yet; don't strip. */ |
9798 | continue; | |
33e44f2e AM |
9799 | else if (s == htab->elf.sgot |
9800 | || s == htab->elf.splt | |
9801 | || s == htab->elf.iplt | |
2d7ad24e | 9802 | || s == htab->pltlocal |
c456f082 | 9803 | || s == htab->glink |
9e390558 | 9804 | || s == htab->global_entry |
5474d94f AM |
9805 | || s == htab->elf.sdynbss |
9806 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
9807 | { |
9808 | /* Strip this section if we don't need it; see the | |
9809 | comment below. */ | |
5bd4f169 | 9810 | } |
58d180e8 AM |
9811 | else if (s == htab->glink_eh_frame) |
9812 | { | |
9813 | if (!bfd_is_abs_section (s->output_section)) | |
9814 | /* Not sized yet. */ | |
9815 | continue; | |
9816 | } | |
70cc837d | 9817 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9818 | { |
c456f082 | 9819 | if (s->size != 0) |
5bd4f169 | 9820 | { |
33e44f2e | 9821 | if (s != htab->elf.srelplt) |
b34976b6 | 9822 | relocs = TRUE; |
5bd4f169 AM |
9823 | |
9824 | /* We use the reloc_count field as a counter if we need | |
9825 | to copy relocs into the output file. */ | |
9826 | s->reloc_count = 0; | |
9827 | } | |
9828 | } | |
65f38f15 | 9829 | else |
5bd4f169 AM |
9830 | { |
9831 | /* It's not one of our sections, so don't allocate space. */ | |
9832 | continue; | |
9833 | } | |
9834 | ||
eea6121a | 9835 | if (s->size == 0) |
5bd4f169 | 9836 | { |
c456f082 AM |
9837 | /* If we don't need this section, strip it from the |
9838 | output file. This is mostly to handle .rela.bss and | |
9839 | .rela.plt. We must create both sections in | |
9840 | create_dynamic_sections, because they must be created | |
9841 | before the linker maps input sections to output | |
9842 | sections. The linker does that before | |
9843 | adjust_dynamic_symbol is called, and it is that | |
9844 | function which decides whether anything needs to go | |
9845 | into these sections. */ | |
8423293d | 9846 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9847 | continue; |
9848 | } | |
9849 | ||
06bcf541 AM |
9850 | if (bfd_is_abs_section (s->output_section)) |
9851 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
9852 | s->name); | |
9853 | ||
c456f082 | 9854 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9855 | continue; |
9856 | ||
65f38f15 AM |
9857 | /* Allocate memory for the section contents. We use bfd_zalloc |
9858 | here in case unused entries are not reclaimed before the | |
9859 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9860 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9861 | sections instead of garbage. | |
9862 | We also rely on the section contents being zero when writing | |
5474d94f | 9863 | the GOT and .dynrelro. */ |
eea6121a | 9864 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9865 | if (s->contents == NULL) |
b34976b6 | 9866 | return FALSE; |
5bd4f169 AM |
9867 | } |
9868 | ||
c72f2fb2 | 9869 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 9870 | { |
0c8d6e5c | 9871 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9872 | continue; |
9873 | ||
e717da7e | 9874 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9875 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9876 | { |
eea6121a | 9877 | if (s->size == 0) |
8423293d | 9878 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9879 | else |
9880 | { | |
eea6121a | 9881 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9882 | if (s->contents == NULL) |
9883 | return FALSE; | |
9884 | } | |
9885 | } | |
9886 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9887 | if (s != NULL) | |
9888 | { | |
eea6121a | 9889 | if (s->size == 0) |
8423293d | 9890 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9891 | else |
9892 | { | |
eea6121a | 9893 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9894 | if (s->contents == NULL) |
9895 | return FALSE; | |
9896 | relocs = TRUE; | |
9897 | s->reloc_count = 0; | |
9898 | } | |
9899 | } | |
9900 | } | |
9901 | ||
e86ce104 | 9902 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9903 | { |
e8910a83 AM |
9904 | bfd_boolean tls_opt; |
9905 | ||
5bd4f169 AM |
9906 | /* Add some entries to the .dynamic section. We fill in the |
9907 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9908 | must add the entries now so that we get the correct size for | |
9909 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9910 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9911 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9912 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9913 | |
0e1862bb | 9914 | if (bfd_link_executable (info)) |
5bd4f169 | 9915 | { |
dc810e39 | 9916 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9917 | return FALSE; |
5bd4f169 AM |
9918 | } |
9919 | ||
33e44f2e | 9920 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 9921 | { |
dc810e39 AM |
9922 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9923 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9924 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9925 | || !add_dynamic_entry (DT_JMPREL, 0) |
9926 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9927 | return FALSE; |
5bd4f169 AM |
9928 | } |
9929 | ||
ee67d69a | 9930 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
9931 | { |
9932 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9933 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9934 | return FALSE; |
19397422 AM |
9935 | } |
9936 | ||
7c9cf415 | 9937 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
9938 | && htab->tls_get_addr_fd != NULL |
9939 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
9940 | if (tls_opt || !htab->opd_abi) | |
9941 | { | |
9942 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
9943 | return FALSE; | |
9944 | } | |
a7f2871e | 9945 | |
5bd4f169 AM |
9946 | if (relocs) |
9947 | { | |
dc810e39 AM |
9948 | if (!add_dynamic_entry (DT_RELA, 0) |
9949 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9950 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9951 | return FALSE; |
5bd4f169 | 9952 | |
65f38f15 AM |
9953 | /* If any dynamic relocs apply to a read-only section, |
9954 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9955 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 9956 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 9957 | |
65f38f15 | 9958 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9959 | { |
65f38f15 | 9960 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9961 | return FALSE; |
5bd4f169 | 9962 | } |
5bd4f169 | 9963 | } |
5bd4f169 | 9964 | } |
65f38f15 | 9965 | #undef add_dynamic_entry |
5bd4f169 | 9966 | |
b34976b6 | 9967 | return TRUE; |
5bd4f169 AM |
9968 | } |
9969 | ||
a345bc8d AM |
9970 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
9971 | ||
9972 | static bfd_boolean | |
9973 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
9974 | { | |
9975 | if (h->plt.plist != NULL | |
9976 | && !h->def_regular | |
9977 | && !h->pointer_equality_needed) | |
9978 | return FALSE; | |
9979 | ||
9980 | return _bfd_elf_hash_symbol (h); | |
9981 | } | |
9982 | ||
721956f4 | 9983 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9984 | |
4ce794b7 AM |
9985 | static inline enum ppc_stub_type |
9986 | ppc_type_of_stub (asection *input_sec, | |
9987 | const Elf_Internal_Rela *rel, | |
9988 | struct ppc_link_hash_entry **hash, | |
e054468f | 9989 | struct plt_entry **plt_ent, |
6911b7dc AM |
9990 | bfd_vma destination, |
9991 | unsigned long local_off) | |
5bd4f169 | 9992 | { |
721956f4 AM |
9993 | struct ppc_link_hash_entry *h = *hash; |
9994 | bfd_vma location; | |
9995 | bfd_vma branch_offset; | |
9996 | bfd_vma max_branch_offset; | |
4ce794b7 | 9997 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9998 | |
721956f4 AM |
9999 | if (h != NULL) |
10000 | { | |
e054468f | 10001 | struct plt_entry *ent; |
7fe2b9a6 | 10002 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10003 | if (h->oh != NULL |
10004 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10005 | { |
10006 | fdh = ppc_follow_link (h->oh); | |
10007 | *hash = fdh; | |
10008 | } | |
8387904d | 10009 | |
e054468f AM |
10010 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10011 | if (ent->addend == rel->r_addend | |
10012 | && ent->plt.offset != (bfd_vma) -1) | |
10013 | { | |
e054468f AM |
10014 | *plt_ent = ent; |
10015 | return ppc_stub_plt_call; | |
10016 | } | |
5bd4f169 | 10017 | |
7fe2b9a6 AM |
10018 | /* Here, we know we don't have a plt entry. If we don't have a |
10019 | either a defined function descriptor or a defined entry symbol | |
10020 | in a regular object file, then it is pointless trying to make | |
10021 | any other type of stub. */ | |
854b41e7 AM |
10022 | if (!is_static_defined (&fdh->elf) |
10023 | && !is_static_defined (&h->elf)) | |
721956f4 | 10024 | return ppc_stub_none; |
5d1634d7 | 10025 | } |
e054468f AM |
10026 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10027 | { | |
10028 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10029 | struct plt_entry **local_plt = (struct plt_entry **) | |
10030 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10031 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10032 | ||
10033 | if (local_plt[r_symndx] != NULL) | |
10034 | { | |
10035 | struct plt_entry *ent; | |
10036 | ||
10037 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10038 | if (ent->addend == rel->r_addend | |
10039 | && ent->plt.offset != (bfd_vma) -1) | |
10040 | { | |
10041 | *plt_ent = ent; | |
10042 | return ppc_stub_plt_call; | |
10043 | } | |
10044 | } | |
10045 | } | |
5d1634d7 | 10046 | |
721956f4 AM |
10047 | /* Determine where the call point is. */ |
10048 | location = (input_sec->output_offset | |
10049 | + input_sec->output_section->vma | |
10050 | + rel->r_offset); | |
5d1634d7 | 10051 | |
721956f4 AM |
10052 | branch_offset = destination - location; |
10053 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10054 | |
721956f4 AM |
10055 | /* Determine if a long branch stub is needed. */ |
10056 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10057 | if (r_type == R_PPC64_REL14 |
10058 | || r_type == R_PPC64_REL14_BRTAKEN | |
10059 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10060 | max_branch_offset = 1 << 15; |
5d1634d7 | 10061 | |
6911b7dc | 10062 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10063 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10064 | is needed later. */ | |
10065 | return ppc_stub_long_branch; | |
5d1634d7 | 10066 | |
721956f4 | 10067 | return ppc_stub_none; |
5d1634d7 AM |
10068 | } |
10069 | ||
f891966f AM |
10070 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10071 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10072 | . mflr %r12 | |
10073 | . bcl 20,31,1f | |
10074 | .1: mflr %r11 | |
10075 | . mtlr %r12 | |
05d0e962 | 10076 | . lis %r12,xxx-1b@highest |
f891966f | 10077 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10078 | . sldi %r12,%r12,32 |
f891966f | 10079 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10080 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10081 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10082 | |
10083 | static bfd_byte * | |
10084 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10085 | { | |
f891966f AM |
10086 | bfd_put_32 (abfd, MFLR_R12, p); |
10087 | p += 4; | |
10088 | bfd_put_32 (abfd, BCL_20_31, p); | |
10089 | p += 4; | |
10090 | bfd_put_32 (abfd, MFLR_R11, p); | |
10091 | p += 4; | |
10092 | bfd_put_32 (abfd, MTLR_R12, p); | |
10093 | p += 4; | |
05d0e962 AM |
10094 | if (off + 0x8000 < 0x10000) |
10095 | { | |
10096 | if (load) | |
10097 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10098 | else | |
10099 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10100 | p += 4; | |
10101 | } | |
10102 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10103 | { | |
10104 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10105 | p += 4; | |
10106 | if (load) | |
10107 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10108 | else | |
10109 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10110 | p += 4; | |
10111 | } | |
10112 | else | |
10113 | { | |
10114 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10115 | { | |
10116 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10117 | p += 4; | |
10118 | } | |
10119 | else | |
10120 | { | |
10121 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10122 | p += 4; | |
10123 | if (((off >> 32) & 0xffff) != 0) | |
10124 | { | |
10125 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10126 | p += 4; | |
10127 | } | |
10128 | } | |
10129 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10130 | { | |
10131 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10132 | p += 4; | |
10133 | } | |
10134 | if (PPC_HI (off) != 0) | |
10135 | { | |
10136 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10137 | p += 4; | |
10138 | } | |
10139 | if (PPC_LO (off) != 0) | |
10140 | { | |
10141 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10142 | p += 4; | |
10143 | } | |
10144 | if (load) | |
10145 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10146 | else | |
10147 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10148 | p += 4; | |
10149 | } | |
10150 | return p; | |
10151 | } | |
10152 | ||
10153 | static unsigned int | |
10154 | size_offset (bfd_vma off) | |
10155 | { | |
10156 | unsigned int size; | |
10157 | if (off + 0x8000 < 0x10000) | |
10158 | size = 4; | |
10159 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10160 | size = 8; | |
10161 | else | |
10162 | { | |
10163 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10164 | size = 4; | |
10165 | else | |
10166 | { | |
10167 | size = 4; | |
10168 | if (((off >> 32) & 0xffff) != 0) | |
10169 | size += 4; | |
10170 | } | |
10171 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10172 | size += 4; | |
10173 | if (PPC_HI (off) != 0) | |
10174 | size += 4; | |
10175 | if (PPC_LO (off) != 0) | |
10176 | size += 4; | |
10177 | size += 4; | |
10178 | } | |
f891966f | 10179 | return size + 16; |
05d0e962 AM |
10180 | } |
10181 | ||
3d58e1fc AM |
10182 | static unsigned int |
10183 | num_relocs_for_offset (bfd_vma off) | |
10184 | { | |
10185 | unsigned int num_rel; | |
10186 | if (off + 0x8000 < 0x10000) | |
10187 | num_rel = 1; | |
10188 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10189 | num_rel = 2; | |
10190 | else | |
10191 | { | |
10192 | num_rel = 1; | |
10193 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10194 | && ((off >> 32) & 0xffff) != 0) | |
10195 | num_rel += 1; | |
10196 | if (PPC_HI (off) != 0) | |
10197 | num_rel += 1; | |
10198 | if (PPC_LO (off) != 0) | |
10199 | num_rel += 1; | |
10200 | } | |
10201 | return num_rel; | |
10202 | } | |
10203 | ||
10204 | static Elf_Internal_Rela * | |
10205 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10206 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10207 | { | |
10208 | bfd_vma relative_targ = targ - (roff - 8); | |
10209 | if (bfd_big_endian (info->output_bfd)) | |
10210 | roff += 2; | |
10211 | r->r_offset = roff; | |
10212 | r->r_addend = relative_targ + roff; | |
10213 | if (off + 0x8000 < 0x10000) | |
10214 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10215 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10216 | { | |
10217 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10218 | ++r; | |
10219 | roff += 4; | |
10220 | r->r_offset = roff; | |
10221 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10222 | r->r_addend = relative_targ + roff; | |
10223 | } | |
10224 | else | |
10225 | { | |
10226 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10227 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10228 | else | |
10229 | { | |
10230 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10231 | if (((off >> 32) & 0xffff) != 0) | |
10232 | { | |
10233 | ++r; | |
10234 | roff += 4; | |
10235 | r->r_offset = roff; | |
10236 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10237 | r->r_addend = relative_targ + roff; | |
10238 | } | |
10239 | } | |
10240 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10241 | roff += 4; | |
10242 | if (PPC_HI (off) != 0) | |
10243 | { | |
10244 | ++r; | |
10245 | roff += 4; | |
10246 | r->r_offset = roff; | |
10247 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10248 | r->r_addend = relative_targ + roff; | |
10249 | } | |
10250 | if (PPC_LO (off) != 0) | |
10251 | { | |
10252 | ++r; | |
10253 | roff += 4; | |
10254 | r->r_offset = roff; | |
10255 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10256 | r->r_addend = relative_targ + roff; | |
10257 | } | |
10258 | } | |
10259 | return r; | |
10260 | } | |
10261 | ||
04bdff6a AM |
10262 | static bfd_byte * |
10263 | build_powerxx_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, | |
10264 | bfd_boolean load) | |
10265 | { | |
10266 | uint64_t insn; | |
10267 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10268 | { | |
10269 | off -= odd; | |
10270 | if (odd) | |
10271 | { | |
10272 | bfd_put_32 (abfd, NOP, p); | |
10273 | p += 4; | |
10274 | } | |
10275 | if (load) | |
10276 | insn = PLD_R12_PC; | |
10277 | else | |
10278 | insn = PADDI_R12_PC; | |
10279 | insn |= D34 (off); | |
10280 | bfd_put_32 (abfd, insn >> 32, p); | |
10281 | p += 4; | |
10282 | bfd_put_32 (abfd, insn, p); | |
10283 | } | |
10284 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10285 | for li is -0x8000, which when shifted by 34 and added gives a | |
10286 | minimum value of -0x2000200000000. The maximum value is | |
10287 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10288 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10289 | { | |
10290 | off -= 8 - odd; | |
10291 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10292 | p += 4; | |
10293 | if (!odd) | |
10294 | { | |
10295 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10296 | p += 4; | |
10297 | } | |
10298 | insn = PADDI_R12_PC | D34 (off); | |
10299 | bfd_put_32 (abfd, insn >> 32, p); | |
10300 | p += 4; | |
10301 | bfd_put_32 (abfd, insn, p); | |
10302 | p += 4; | |
10303 | if (odd) | |
10304 | { | |
10305 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10306 | p += 4; | |
10307 | } | |
10308 | if (load) | |
10309 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10310 | else | |
10311 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10312 | } | |
10313 | else | |
10314 | { | |
10315 | off -= odd + 8; | |
10316 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10317 | p += 4; | |
10318 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10319 | p += 4; | |
10320 | if (odd) | |
10321 | { | |
10322 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10323 | p += 4; | |
10324 | } | |
10325 | insn = PADDI_R12_PC | D34 (off); | |
10326 | bfd_put_32 (abfd, insn >> 32, p); | |
10327 | p += 4; | |
10328 | bfd_put_32 (abfd, insn, p); | |
10329 | p += 4; | |
10330 | if (!odd) | |
10331 | { | |
10332 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10333 | p += 4; | |
10334 | } | |
10335 | if (load) | |
10336 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10337 | else | |
10338 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10339 | } | |
10340 | p += 4; | |
10341 | return p; | |
10342 | } | |
10343 | ||
10344 | static unsigned int | |
10345 | size_powerxx_offset (bfd_vma off, int odd) | |
10346 | { | |
10347 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10348 | return odd + 8; | |
10349 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10350 | return 20; | |
10351 | else | |
10352 | return 24; | |
10353 | } | |
10354 | ||
10355 | static unsigned int | |
10356 | num_relocs_for_powerxx_offset (bfd_vma off, int odd) | |
10357 | { | |
10358 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10359 | return 1; | |
10360 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10361 | return 2; | |
10362 | else | |
10363 | return 3; | |
10364 | } | |
10365 | ||
10366 | static Elf_Internal_Rela * | |
10367 | emit_relocs_for_powerxx_offset (struct bfd_link_info *info, | |
10368 | Elf_Internal_Rela *r, bfd_vma roff, | |
10369 | bfd_vma targ, bfd_vma off, int odd) | |
10370 | { | |
10371 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10372 | roff += odd; | |
10373 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10374 | { | |
10375 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10376 | r->r_offset = roff + d_offset; | |
10377 | r->r_addend = targ + 8 - odd - d_offset; | |
10378 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10379 | ++r; | |
10380 | roff += 8 - odd; | |
10381 | } | |
10382 | else | |
10383 | { | |
10384 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10385 | r->r_offset = roff + d_offset; | |
10386 | r->r_addend = targ + 8 + odd - d_offset; | |
10387 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
10388 | ++r; | |
10389 | roff += 4; | |
10390 | r->r_offset = roff + d_offset; | |
10391 | r->r_addend = targ + 4 + odd - d_offset; | |
10392 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10393 | ++r; | |
10394 | roff += 4 + odd; | |
10395 | } | |
10396 | r->r_offset = roff; | |
10397 | r->r_addend = targ; | |
10398 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
10399 | return r; | |
10400 | } | |
10401 | ||
df136d64 AM |
10402 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10403 | ||
10404 | static bfd_byte * | |
10405 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10406 | { | |
10407 | delta /= 4; | |
10408 | if (delta < 64) | |
10409 | *eh++ = DW_CFA_advance_loc + delta; | |
10410 | else if (delta < 256) | |
10411 | { | |
10412 | *eh++ = DW_CFA_advance_loc1; | |
10413 | *eh++ = delta; | |
10414 | } | |
10415 | else if (delta < 65536) | |
10416 | { | |
10417 | *eh++ = DW_CFA_advance_loc2; | |
10418 | bfd_put_16 (abfd, delta, eh); | |
10419 | eh += 2; | |
10420 | } | |
10421 | else | |
10422 | { | |
10423 | *eh++ = DW_CFA_advance_loc4; | |
10424 | bfd_put_32 (abfd, delta, eh); | |
10425 | eh += 4; | |
10426 | } | |
10427 | return eh; | |
10428 | } | |
10429 | ||
10430 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10431 | ||
10432 | static unsigned int | |
10433 | eh_advance_size (unsigned int delta) | |
10434 | { | |
10435 | if (delta < 64 * 4) | |
10436 | /* DW_CFA_advance_loc+[1..63]. */ | |
10437 | return 1; | |
10438 | if (delta < 256 * 4) | |
10439 | /* DW_CFA_advance_loc1, byte. */ | |
10440 | return 2; | |
10441 | if (delta < 65536 * 4) | |
10442 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10443 | return 3; | |
10444 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10445 | return 5; | |
10446 | } | |
10447 | ||
794e51c0 AM |
10448 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10449 | to update a plt entry in one thread and have another thread see a | |
10450 | stale zero toc entry. To avoid this we need some sort of acquire | |
10451 | barrier in the call stub. One solution is to make the load of the | |
10452 | toc word seem to appear to depend on the load of the function entry | |
10453 | word. Another solution is to test for r2 being zero, and branch to | |
10454 | the appropriate glink entry if so. | |
10455 | ||
10456 | . fake dep barrier compare | |
71a39c98 AM |
10457 | . ld 12,xxx(2) ld 12,xxx(2) |
10458 | . mtctr 12 mtctr 12 | |
10459 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10460 | . add 2,2,11 cmpldi 2,0 |
10461 | . ld 2,xxx+8(2) bnectr+ | |
10462 | . bctr b <glink_entry> | |
10463 | ||
10464 | The solution involving the compare turns out to be faster, so | |
10465 | that's what we use unless the branch won't reach. */ | |
10466 | ||
10467 | #define ALWAYS_USE_FAKE_DEP 0 | |
10468 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10469 | |
794e51c0 AM |
10470 | static inline unsigned int |
10471 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10472 | struct ppc_stub_hash_entry *stub_entry, | |
10473 | bfd_vma off) | |
10474 | { | |
05d0e962 | 10475 | unsigned size; |
b9e5796b | 10476 | |
05d0e962 AM |
10477 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10478 | { | |
04bdff6a AM |
10479 | if (htab->powerxx_stubs) |
10480 | { | |
10481 | bfd_vma start = (stub_entry->stub_offset | |
10482 | + stub_entry->group->stub_sec->output_offset | |
10483 | + stub_entry->group->stub_sec->output_section->vma); | |
10484 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
10485 | start += 4; | |
10486 | size = 8 + size_powerxx_offset (off, start & 4); | |
10487 | } | |
10488 | else | |
10489 | size = 8 + size_offset (off - 8); | |
05d0e962 AM |
10490 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10491 | size += 4; | |
10492 | return size; | |
10493 | } | |
10494 | ||
10495 | size = 12; | |
b9e5796b AM |
10496 | if (ALWAYS_EMIT_R2SAVE |
10497 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10498 | size += 4; | |
10499 | if (PPC_HA (off) != 0) | |
794e51c0 | 10500 | size += 4; |
b9e5796b AM |
10501 | if (htab->opd_abi) |
10502 | { | |
10503 | size += 4; | |
e7d1c40c | 10504 | if (htab->params->plt_static_chain) |
b9e5796b | 10505 | size += 4; |
bd4d2eaa AM |
10506 | if (htab->params->plt_thread_safe |
10507 | && htab->elf.dynamic_sections_created | |
10508 | && stub_entry->h != NULL | |
10509 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10510 | size += 8; |
e7d1c40c | 10511 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10512 | size += 4; |
10513 | } | |
794e51c0 AM |
10514 | if (stub_entry->h != NULL |
10515 | && (stub_entry->h == htab->tls_get_addr_fd | |
10516 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10517 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
10518 | { |
10519 | size += 7 * 4; | |
e81b4c93 | 10520 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) |
407aa07c | 10521 | size += 6 * 4; |
f378ab09 | 10522 | } |
794e51c0 AM |
10523 | return size; |
10524 | } | |
10525 | ||
2420fff6 AM |
10526 | /* Depending on the sign of plt_stub_align: |
10527 | If positive, return the padding to align to a 2**plt_stub_align | |
10528 | boundary. | |
10529 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10530 | boundaries if we align, then return the padding needed to do so. */ | |
10531 | ||
794e51c0 AM |
10532 | static inline unsigned int |
10533 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10534 | struct ppc_stub_hash_entry *stub_entry, | |
10535 | bfd_vma plt_off) | |
10536 | { | |
2420fff6 | 10537 | int stub_align; |
1aa42141 | 10538 | unsigned stub_size; |
6f20ed8a | 10539 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10540 | |
2420fff6 AM |
10541 | if (htab->params->plt_stub_align >= 0) |
10542 | { | |
10543 | stub_align = 1 << htab->params->plt_stub_align; | |
10544 | if ((stub_off & (stub_align - 1)) != 0) | |
10545 | return stub_align - (stub_off & (stub_align - 1)); | |
10546 | return 0; | |
10547 | } | |
10548 | ||
10549 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 10550 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 10551 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10552 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10553 | return stub_align - (stub_off & (stub_align - 1)); |
10554 | return 0; | |
10555 | } | |
10556 | ||
10557 | /* Build a .plt call stub. */ | |
10558 | ||
10559 | static inline bfd_byte * | |
10560 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10561 | struct ppc_stub_hash_entry *stub_entry, | |
10562 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10563 | { | |
e7d1c40c | 10564 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10565 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10566 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10567 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10568 | && htab->elf.dynamic_sections_created | |
10569 | && stub_entry->h != NULL | |
10570 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10571 | bfd_boolean use_fake_dep = plt_thread_safe; |
10572 | bfd_vma cmp_branch_off = 0; | |
10573 | ||
10574 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10575 | && plt_load_toc |
794e51c0 | 10576 | && plt_thread_safe |
bd4d2eaa AM |
10577 | && !((stub_entry->h == htab->tls_get_addr_fd |
10578 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10579 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10580 | { |
10581 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10582 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10583 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10584 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10585 | bfd_vma to, from; |
10586 | ||
68d62958 AM |
10587 | if (pltindex > 32768) |
10588 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10589 | to = (glinkoff |
10590 | + htab->glink->output_offset | |
10591 | + htab->glink->output_section->vma); | |
6f20ed8a | 10592 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10593 | + 4 * (ALWAYS_EMIT_R2SAVE |
10594 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10595 | + 4 * (PPC_HA (offset) != 0) | |
10596 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10597 | != PPC_HA (offset)) | |
10598 | + 4 * (plt_static_chain != 0) | |
10599 | + 20 | |
6f20ed8a AM |
10600 | + stub_entry->group->stub_sec->output_offset |
10601 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10602 | cmp_branch_off = to - from; |
10603 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10604 | } | |
10605 | ||
ac2df442 AM |
10606 | if (PPC_HA (offset) != 0) |
10607 | { | |
176a0d42 AM |
10608 | if (r != NULL) |
10609 | { | |
794e51c0 AM |
10610 | if (ALWAYS_EMIT_R2SAVE |
10611 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10612 | r[0].r_offset += 4; | |
176a0d42 | 10613 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10614 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10615 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10616 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10617 | if (plt_load_toc) |
176a0d42 | 10618 | { |
b9e5796b | 10619 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10620 | { |
b9e5796b AM |
10621 | r[2].r_offset = r[1].r_offset + 4; |
10622 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10623 | r[2].r_addend = r[0].r_addend; | |
10624 | } | |
10625 | else | |
10626 | { | |
10627 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10628 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10629 | r[2].r_addend = r[0].r_addend + 8; | |
10630 | if (plt_static_chain) | |
10631 | { | |
10632 | r[3].r_offset = r[2].r_offset + 4; | |
10633 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10634 | r[3].r_addend = r[0].r_addend + 16; | |
10635 | } | |
c7131b65 | 10636 | } |
176a0d42 AM |
10637 | } |
10638 | } | |
794e51c0 AM |
10639 | if (ALWAYS_EMIT_R2SAVE |
10640 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10641 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10642 | if (plt_load_toc) |
10643 | { | |
10644 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10645 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10646 | } | |
10647 | else | |
10648 | { | |
10649 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10650 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10651 | } | |
b9e5796b AM |
10652 | if (plt_load_toc |
10653 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10654 | { |
71a39c98 | 10655 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10656 | offset = 0; |
10657 | } | |
71a39c98 | 10658 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10659 | if (plt_load_toc) |
794e51c0 | 10660 | { |
b9e5796b AM |
10661 | if (use_fake_dep) |
10662 | { | |
10663 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10664 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10665 | } | |
10666 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10667 | if (plt_static_chain) | |
10668 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10669 | } |
ac2df442 AM |
10670 | } |
10671 | else | |
10672 | { | |
176a0d42 AM |
10673 | if (r != NULL) |
10674 | { | |
794e51c0 AM |
10675 | if (ALWAYS_EMIT_R2SAVE |
10676 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10677 | r[0].r_offset += 4; | |
176a0d42 | 10678 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10679 | if (plt_load_toc) |
176a0d42 | 10680 | { |
b9e5796b | 10681 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10682 | { |
b9e5796b AM |
10683 | r[1].r_offset = r[0].r_offset + 4; |
10684 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10685 | r[1].r_addend = r[0].r_addend; | |
10686 | } | |
10687 | else | |
10688 | { | |
10689 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10690 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10691 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10692 | if (plt_static_chain) | |
10693 | { | |
10694 | r[2].r_offset = r[1].r_offset + 4; | |
10695 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10696 | r[2].r_addend = r[0].r_addend + 8; | |
10697 | } | |
c7131b65 | 10698 | } |
176a0d42 AM |
10699 | } |
10700 | } | |
794e51c0 AM |
10701 | if (ALWAYS_EMIT_R2SAVE |
10702 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10703 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10704 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10705 | if (plt_load_toc |
10706 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10707 | { |
10708 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10709 | offset = 0; | |
10710 | } | |
71a39c98 | 10711 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10712 | if (plt_load_toc) |
794e51c0 | 10713 | { |
b9e5796b AM |
10714 | if (use_fake_dep) |
10715 | { | |
10716 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10717 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10718 | } | |
10719 | if (plt_static_chain) | |
10720 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10721 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10722 | } |
ac2df442 | 10723 | } |
b9e5796b | 10724 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10725 | { |
10726 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10727 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10728 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10729 | } |
10730 | else | |
407aa07c | 10731 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
10732 | return p; |
10733 | } | |
10734 | ||
a7f2871e AM |
10735 | /* Build a special .plt call stub for __tls_get_addr. */ |
10736 | ||
10737 | #define LD_R11_0R3 0xe9630000 | |
10738 | #define LD_R12_0R3 0xe9830000 | |
10739 | #define MR_R0_R3 0x7c601b78 | |
10740 | #define CMPDI_R11_0 0x2c2b0000 | |
10741 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10742 | #define BEQLR 0x4d820020 | |
10743 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10744 | #define STD_R11_0R1 0xf9610000 |
10745 | #define BCTRL 0x4e800421 | |
10746 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10747 | #define MTLR_R11 0x7d6803a6 |
10748 | ||
10749 | static inline bfd_byte * | |
794e51c0 AM |
10750 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10751 | struct ppc_stub_hash_entry *stub_entry, | |
10752 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10753 | { |
e7d1c40c | 10754 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 10755 | bfd_byte *loc = p; |
794e51c0 | 10756 | |
a7f2871e AM |
10757 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10758 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10759 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10760 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10761 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10762 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10763 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
10764 | if (r != NULL) |
10765 | r[0].r_offset += 7 * 4; | |
e81b4c93 | 10766 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) |
f378ab09 AM |
10767 | return build_plt_stub (htab, stub_entry, p, offset, r); |
10768 | ||
a7f2871e | 10769 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 10770 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10771 | |
10772 | if (r != NULL) | |
f378ab09 | 10773 | r[0].r_offset += 2 * 4; |
794e51c0 | 10774 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 10775 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 10776 | |
a078d95a | 10777 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 10778 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10779 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10780 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10781 | ||
df136d64 AM |
10782 | if (htab->glink_eh_frame != NULL |
10783 | && htab->glink_eh_frame->size != 0) | |
10784 | { | |
10785 | bfd_byte *base, *eh; | |
10786 | unsigned int lr_used, delta; | |
10787 | ||
10788 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
10789 | eh = base + stub_entry->group->eh_size; | |
10790 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
10791 | delta = lr_used - stub_entry->group->lr_restore; | |
10792 | stub_entry->group->lr_restore = lr_used + 16; | |
10793 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
10794 | *eh++ = DW_CFA_offset_extended_sf; | |
10795 | *eh++ = 65; | |
10796 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
10797 | *eh++ = DW_CFA_advance_loc + 4; | |
10798 | *eh++ = DW_CFA_restore_extended; | |
10799 | *eh++ = 65; | |
10800 | stub_entry->group->eh_size = eh - base; | |
10801 | } | |
a7f2871e AM |
10802 | return p; |
10803 | } | |
10804 | ||
176a0d42 AM |
10805 | static Elf_Internal_Rela * |
10806 | get_relocs (asection *sec, int count) | |
10807 | { | |
10808 | Elf_Internal_Rela *relocs; | |
10809 | struct bfd_elf_section_data *elfsec_data; | |
10810 | ||
10811 | elfsec_data = elf_section_data (sec); | |
10812 | relocs = elfsec_data->relocs; | |
10813 | if (relocs == NULL) | |
10814 | { | |
10815 | bfd_size_type relsize; | |
10816 | relsize = sec->reloc_count * sizeof (*relocs); | |
10817 | relocs = bfd_alloc (sec->owner, relsize); | |
10818 | if (relocs == NULL) | |
10819 | return NULL; | |
10820 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10821 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10822 | sizeof (Elf_Internal_Shdr)); | |
10823 | if (elfsec_data->rela.hdr == NULL) | |
10824 | return NULL; | |
10825 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10826 | * sizeof (Elf64_External_Rela)); | |
10827 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10828 | sec->reloc_count = 0; |
10829 | } | |
10830 | relocs += sec->reloc_count; | |
10831 | sec->reloc_count += count; | |
10832 | return relocs; | |
10833 | } | |
10834 | ||
3d58e1fc AM |
10835 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
10836 | forms, to the equivalent relocs against the global symbol given by | |
10837 | STUB_ENTRY->H. */ | |
10838 | ||
10839 | static bfd_boolean | |
10840 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
10841 | struct ppc_stub_hash_entry *stub_entry, | |
10842 | Elf_Internal_Rela *r, unsigned int num_rel) | |
10843 | { | |
10844 | struct elf_link_hash_entry **hashes; | |
10845 | unsigned long symndx; | |
10846 | struct ppc_link_hash_entry *h; | |
10847 | bfd_vma symval; | |
10848 | ||
10849 | /* Relocs are always against symbols in their own object file. Fake | |
10850 | up global sym hashes for the stub bfd (which has no symbols). */ | |
10851 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
10852 | if (hashes == NULL) | |
10853 | { | |
10854 | bfd_size_type hsize; | |
10855 | ||
10856 | /* When called the first time, stub_globals will contain the | |
10857 | total number of symbols seen during stub sizing. After | |
10858 | allocating, stub_globals is used as an index to fill the | |
10859 | hashes array. */ | |
10860 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
10861 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
10862 | if (hashes == NULL) | |
10863 | return FALSE; | |
10864 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
10865 | htab->stub_globals = 1; | |
10866 | } | |
10867 | symndx = htab->stub_globals++; | |
10868 | h = stub_entry->h; | |
10869 | hashes[symndx] = &h->elf; | |
10870 | if (h->oh != NULL && h->oh->is_func) | |
10871 | h = ppc_follow_link (h->oh); | |
10872 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
10873 | || h->elf.root.type == bfd_link_hash_defweak); | |
10874 | symval = (h->elf.root.u.def.value | |
10875 | + h->elf.root.u.def.section->output_offset | |
10876 | + h->elf.root.u.def.section->output_section->vma); | |
10877 | while (num_rel-- != 0) | |
10878 | { | |
10879 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
10880 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
10881 | { | |
10882 | /* H is an opd symbol. The addend must be zero, and the | |
10883 | branch reloc is the only one we can convert. */ | |
10884 | r->r_addend = 0; | |
10885 | break; | |
10886 | } | |
10887 | else | |
10888 | r->r_addend -= symval; | |
10889 | --r; | |
10890 | } | |
10891 | return TRUE; | |
10892 | } | |
10893 | ||
aa374f67 | 10894 | static bfd_vma |
25f53a85 | 10895 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10896 | struct ppc_stub_hash_entry *stub_entry) |
10897 | { | |
25f53a85 | 10898 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 10899 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
10900 | |
10901 | if (r2off == 0) | |
10902 | { | |
10903 | /* Support linking -R objects. Get the toc pointer from the | |
10904 | opd entry. */ | |
10905 | char buf[8]; | |
b9e5796b AM |
10906 | if (!htab->opd_abi) |
10907 | return r2off; | |
aa374f67 AM |
10908 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10909 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10910 | ||
10911 | if (strcmp (opd->name, ".opd") != 0 | |
10912 | || opd->reloc_count != 0) | |
10913 | { | |
2cdcc330 AM |
10914 | info->callbacks->einfo |
10915 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
10916 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 10917 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 10918 | return (bfd_vma) -1; |
aa374f67 AM |
10919 | } |
10920 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 10921 | return (bfd_vma) -1; |
aa374f67 | 10922 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 10923 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 10924 | } |
6f20ed8a | 10925 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
10926 | return r2off; |
10927 | } | |
10928 | ||
b34976b6 | 10929 | static bfd_boolean |
4ce794b7 | 10930 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10931 | { |
721956f4 AM |
10932 | struct ppc_stub_hash_entry *stub_entry; |
10933 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10934 | struct bfd_link_info *info; |
10935 | struct ppc_link_hash_table *htab; | |
721956f4 | 10936 | bfd_byte *loc; |
3d58e1fc | 10937 | bfd_byte *p, *relp; |
1aa42141 | 10938 | bfd_vma targ, off; |
176a0d42 | 10939 | Elf_Internal_Rela *r; |
e054468f | 10940 | asection *plt; |
3d58e1fc | 10941 | int num_rel; |
04bdff6a | 10942 | int odd; |
5d1634d7 | 10943 | |
721956f4 AM |
10944 | /* Massage our args to the form they really have. */ |
10945 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10946 | info = in_arg; |
5d1634d7 | 10947 | |
5d1634d7 | 10948 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10949 | if (htab == NULL) |
10950 | return FALSE; | |
5d1634d7 | 10951 | |
1aa42141 | 10952 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 10953 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10954 | |
4ce794b7 | 10955 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10956 | switch (stub_entry->stub_type) |
5d1634d7 | 10957 | { |
721956f4 | 10958 | case ppc_stub_long_branch: |
ad8e1ba5 | 10959 | case ppc_stub_long_branch_r2off: |
721956f4 | 10960 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 10961 | targ = (stub_entry->target_value |
6911b7dc AM |
10962 | + stub_entry->target_section->output_offset |
10963 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 10964 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 10965 | |
721956f4 | 10966 | /* And this is where we are coming from. */ |
1aa42141 AM |
10967 | off = (stub_entry->stub_offset |
10968 | + stub_entry->group->stub_sec->output_offset | |
10969 | + stub_entry->group->stub_sec->output_section->vma); | |
10970 | off = targ - off; | |
e86ce104 | 10971 | |
9e390558 | 10972 | p = loc; |
ac2df442 | 10973 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 10974 | { |
25f53a85 | 10975 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10976 | |
a7c49797 | 10977 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10978 | { |
10979 | htab->stub_error = TRUE; | |
10980 | return FALSE; | |
10981 | } | |
9e390558 AM |
10982 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
10983 | p += 4; | |
ac2df442 AM |
10984 | if (PPC_HA (r2off) != 0) |
10985 | { | |
e7d1c40c | 10986 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10987 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
10988 | p += 4; | |
a7c49797 AM |
10989 | } |
10990 | if (PPC_LO (r2off) != 0) | |
10991 | { | |
10992 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
10993 | ADDI_R2_R2 | PPC_LO (r2off), p); |
10994 | p += 4; | |
ac2df442 | 10995 | } |
9e390558 | 10996 | off -= p - loc; |
ad8e1ba5 | 10997 | } |
9e390558 AM |
10998 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
10999 | p += 4; | |
ad8e1ba5 | 11000 | |
5c3dead3 AM |
11001 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11002 | { | |
cf97bcb0 AM |
11003 | _bfd_error_handler |
11004 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11005 | stub_entry->root.string); |
5c3dead3 AM |
11006 | htab->stub_error = TRUE; |
11007 | return FALSE; | |
11008 | } | |
ee75fd95 AM |
11009 | |
11010 | if (info->emitrelocations) | |
11011 | { | |
6f20ed8a | 11012 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11013 | if (r == NULL) |
11014 | return FALSE; | |
9e390558 | 11015 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11016 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11017 | r->r_addend = targ; |
3d58e1fc AM |
11018 | if (stub_entry->h != NULL |
11019 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
11020 | return FALSE; | |
ee75fd95 | 11021 | } |
721956f4 | 11022 | break; |
e86ce104 | 11023 | |
721956f4 | 11024 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11025 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11026 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11027 | stub_entry->root.string + 9, | |
b34976b6 | 11028 | FALSE, FALSE); |
721956f4 AM |
11029 | if (br_entry == NULL) |
11030 | { | |
cf97bcb0 AM |
11031 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11032 | stub_entry->root.string); | |
b34976b6 AM |
11033 | htab->stub_error = TRUE; |
11034 | return FALSE; | |
721956f4 AM |
11035 | } |
11036 | ||
1aa42141 | 11037 | targ = (stub_entry->target_value |
176a0d42 AM |
11038 | + stub_entry->target_section->output_offset |
11039 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11040 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11041 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11042 | |
1aa42141 | 11043 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11044 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11045 | |
f94498ff | 11046 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11047 | { |
f94498ff | 11048 | br_entry->iter = 0; |
84f5d08e | 11049 | |
f94498ff | 11050 | if (htab->relbrlt != NULL) |
84f5d08e | 11051 | { |
f94498ff AM |
11052 | /* Create a reloc for the branch lookup table entry. */ |
11053 | Elf_Internal_Rela rela; | |
11054 | bfd_byte *rl; | |
11055 | ||
11056 | rela.r_offset = (br_entry->offset | |
11057 | + htab->brlt->output_offset | |
11058 | + htab->brlt->output_section->vma); | |
11059 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11060 | rela.r_addend = targ; |
f94498ff AM |
11061 | |
11062 | rl = htab->relbrlt->contents; | |
11063 | rl += (htab->relbrlt->reloc_count++ | |
11064 | * sizeof (Elf64_External_Rela)); | |
11065 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11066 | } | |
11067 | else if (info->emitrelocations) | |
11068 | { | |
176a0d42 AM |
11069 | r = get_relocs (htab->brlt, 1); |
11070 | if (r == NULL) | |
11071 | return FALSE; | |
11072 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11073 | normal reloc processing. Symbols and offsets are not | |
11074 | translated from input file to output file form, so | |
11075 | set up the offset per the output file. */ | |
f94498ff AM |
11076 | r->r_offset = (br_entry->offset |
11077 | + htab->brlt->output_offset | |
11078 | + htab->brlt->output_section->vma); | |
11079 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11080 | r->r_addend = targ; |
84f5d08e | 11081 | } |
84f5d08e | 11082 | } |
721956f4 | 11083 | |
1aa42141 | 11084 | targ = (br_entry->offset |
176a0d42 AM |
11085 | + htab->brlt->output_offset |
11086 | + htab->brlt->output_section->vma); | |
11087 | ||
1aa42141 AM |
11088 | off = (elf_gp (info->output_bfd) |
11089 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11090 | off = targ - off; | |
721956f4 | 11091 | |
ad8e1ba5 | 11092 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11093 | { |
25f53a85 | 11094 | info->callbacks->einfo |
c1c8c1ef | 11095 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11096 | stub_entry->root.string); |
5d1634d7 | 11097 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11098 | htab->stub_error = TRUE; |
11099 | return FALSE; | |
5d1634d7 | 11100 | } |
41bd81ab | 11101 | |
176a0d42 AM |
11102 | if (info->emitrelocations) |
11103 | { | |
6f20ed8a | 11104 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11105 | if (r == NULL) |
11106 | return FALSE; | |
6f20ed8a | 11107 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11108 | if (bfd_big_endian (info->output_bfd)) |
11109 | r[0].r_offset += 2; | |
00f412ee | 11110 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11111 | r[0].r_offset += 4; |
11112 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11113 | r[0].r_addend = targ; |
176a0d42 AM |
11114 | if (PPC_HA (off) != 0) |
11115 | { | |
11116 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11117 | r[1].r_offset = r[0].r_offset + 4; | |
11118 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11119 | r[1].r_addend = r[0].r_addend; | |
11120 | } | |
11121 | } | |
11122 | ||
9e390558 | 11123 | p = loc; |
00f412ee | 11124 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11125 | { |
176a0d42 | 11126 | if (PPC_HA (off) != 0) |
ac2df442 | 11127 | { |
e7d1c40c | 11128 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11129 | ADDIS_R12_R2 | PPC_HA (off), p); |
11130 | p += 4; | |
e7d1c40c | 11131 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11132 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11133 | } |
11134 | else | |
9e390558 AM |
11135 | bfd_put_32 (htab->params->stub_bfd, |
11136 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11137 | } |
11138 | else | |
11139 | { | |
25f53a85 | 11140 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11141 | |
a7c49797 | 11142 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11143 | { |
11144 | htab->stub_error = TRUE; | |
11145 | return FALSE; | |
11146 | } | |
ad8e1ba5 | 11147 | |
9e390558 AM |
11148 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11149 | p += 4; | |
176a0d42 | 11150 | if (PPC_HA (off) != 0) |
ac2df442 | 11151 | { |
e7d1c40c | 11152 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11153 | ADDIS_R12_R2 | PPC_HA (off), p); |
11154 | p += 4; | |
e7d1c40c | 11155 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11156 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11157 | } |
11158 | else | |
9e390558 | 11159 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11160 | |
11161 | if (PPC_HA (r2off) != 0) | |
11162 | { | |
9e390558 | 11163 | p += 4; |
e7d1c40c | 11164 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11165 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11166 | } |
11167 | if (PPC_LO (r2off) != 0) | |
11168 | { | |
9e390558 | 11169 | p += 4; |
e7d1c40c | 11170 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11171 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11172 | } |
ad8e1ba5 | 11173 | } |
9e390558 AM |
11174 | p += 4; |
11175 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11176 | p += 4; | |
407aa07c AM |
11177 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11178 | p += 4; | |
721956f4 | 11179 | break; |
5d1634d7 | 11180 | |
05d0e962 AM |
11181 | case ppc_stub_long_branch_notoc: |
11182 | case ppc_stub_long_branch_both: | |
11183 | case ppc_stub_plt_branch_notoc: | |
11184 | case ppc_stub_plt_branch_both: | |
11185 | case ppc_stub_plt_call_notoc: | |
11186 | case ppc_stub_plt_call_both: | |
11187 | p = loc; | |
f891966f | 11188 | off = (stub_entry->stub_offset |
05d0e962 AM |
11189 | + stub_entry->group->stub_sec->output_offset |
11190 | + stub_entry->group->stub_sec->output_section->vma); | |
11191 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11192 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11193 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11194 | { | |
11195 | off += 4; | |
11196 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
11197 | p += 4; | |
11198 | } | |
11199 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11200 | { | |
11201 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11202 | if (targ >= (bfd_vma) -2) | |
11203 | abort (); | |
11204 | ||
11205 | plt = htab->elf.splt; | |
11206 | if (!htab->elf.dynamic_sections_created | |
11207 | || stub_entry->h == NULL | |
11208 | || stub_entry->h->elf.dynindx == -1) | |
11209 | { | |
11210 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11211 | plt = htab->elf.iplt; | |
11212 | else | |
11213 | plt = htab->pltlocal; | |
11214 | } | |
11215 | targ += plt->output_offset + plt->output_section->vma; | |
11216 | } | |
11217 | else | |
11218 | targ = (stub_entry->target_value | |
11219 | + stub_entry->target_section->output_offset | |
11220 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11221 | odd = off & 4; |
05d0e962 | 11222 | off = targ - off; |
f891966f | 11223 | |
3d58e1fc AM |
11224 | relp = p; |
11225 | num_rel = 0; | |
04bdff6a AM |
11226 | if (htab->powerxx_stubs) |
11227 | { | |
11228 | bfd_boolean load = stub_entry->stub_type >= ppc_stub_plt_call_notoc; | |
11229 | p = build_powerxx_offset (htab->params->stub_bfd, p, off, odd, load); | |
11230 | } | |
11231 | else | |
11232 | { | |
11233 | /* The notoc stubs calculate their target (either a PLT entry or | |
11234 | the global entry point of a function) relative to the PC | |
11235 | returned by the "bcl" two instructions past the start of the | |
11236 | sequence emitted by build_offset. The offset is therefore 8 | |
11237 | less than calculated from the start of the sequence. */ | |
11238 | off -= 8; | |
11239 | p = build_offset (htab->params->stub_bfd, p, off, | |
11240 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
11241 | } | |
11242 | ||
f891966f | 11243 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11244 | { |
f891966f | 11245 | bfd_vma from; |
3d58e1fc | 11246 | num_rel = 1; |
f891966f AM |
11247 | from = (stub_entry->stub_offset |
11248 | + stub_entry->group->stub_sec->output_offset | |
11249 | + stub_entry->group->stub_sec->output_section->vma | |
11250 | + (p - loc)); | |
05d0e962 | 11251 | bfd_put_32 (htab->params->stub_bfd, |
f891966f | 11252 | B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11253 | } |
11254 | else | |
11255 | { | |
11256 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11257 | p += 4; | |
11258 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
11259 | } | |
11260 | p += 4; | |
df136d64 | 11261 | |
3d58e1fc AM |
11262 | if (info->emitrelocations) |
11263 | { | |
04bdff6a AM |
11264 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
11265 | if (htab->powerxx_stubs) | |
11266 | num_rel += num_relocs_for_powerxx_offset (off, odd); | |
11267 | else | |
11268 | { | |
11269 | num_rel += num_relocs_for_offset (off); | |
11270 | roff += 16; | |
11271 | } | |
3d58e1fc AM |
11272 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
11273 | if (r == NULL) | |
11274 | return FALSE; | |
04bdff6a AM |
11275 | if (htab->powerxx_stubs) |
11276 | r = emit_relocs_for_powerxx_offset (info, r, roff, targ, off, odd); | |
11277 | else | |
11278 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
3d58e1fc AM |
11279 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc |
11280 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11281 | { | |
11282 | ++r; | |
11283 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11284 | r->r_offset = roff; | |
11285 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11286 | r->r_addend = targ; | |
11287 | if (stub_entry->h != NULL | |
11288 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
11289 | return FALSE; | |
11290 | } | |
11291 | } | |
11292 | ||
04bdff6a AM |
11293 | if (!htab->powerxx_stubs |
11294 | && htab->glink_eh_frame != NULL | |
11295 | && htab->glink_eh_frame->size != 0) | |
df136d64 AM |
11296 | { |
11297 | bfd_byte *base, *eh; | |
11298 | unsigned int lr_used, delta; | |
11299 | ||
11300 | base = (htab->glink_eh_frame->contents | |
11301 | + stub_entry->group->eh_base + 17); | |
11302 | eh = base + stub_entry->group->eh_size; | |
11303 | lr_used = stub_entry->stub_offset + 8; | |
11304 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11305 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11306 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11307 | lr_used += 4; | |
11308 | delta = lr_used - stub_entry->group->lr_restore; | |
11309 | stub_entry->group->lr_restore = lr_used + 8; | |
11310 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11311 | *eh++ = DW_CFA_register; | |
11312 | *eh++ = 65; | |
11313 | *eh++ = 12; | |
11314 | *eh++ = DW_CFA_advance_loc + 2; | |
11315 | *eh++ = DW_CFA_restore_extended; | |
11316 | *eh++ = 65; | |
11317 | stub_entry->group->eh_size = eh - base; | |
11318 | } | |
05d0e962 AM |
11319 | break; |
11320 | ||
721956f4 | 11321 | case ppc_stub_plt_call: |
794e51c0 | 11322 | case ppc_stub_plt_call_r2save: |
e054468f | 11323 | if (stub_entry->h != NULL |
b31867b6 AM |
11324 | && stub_entry->h->is_func_descriptor |
11325 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11326 | { |
b31867b6 AM |
11327 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11328 | ||
11329 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11330 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11331 | if (fh->elf.root.type == bfd_link_hash_undefined |
11332 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11333 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11334 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11335 | } |
11336 | ||
721956f4 | 11337 | /* Now build the stub. */ |
1aa42141 AM |
11338 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11339 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11340 | abort (); |
11341 | ||
33e44f2e | 11342 | plt = htab->elf.splt; |
25f23106 AM |
11343 | if (!htab->elf.dynamic_sections_created |
11344 | || stub_entry->h == NULL | |
11345 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11346 | { |
11347 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11348 | plt = htab->elf.iplt; | |
11349 | else | |
11350 | plt = htab->pltlocal; | |
11351 | } | |
1aa42141 | 11352 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11353 | |
1aa42141 AM |
11354 | off = (elf_gp (info->output_bfd) |
11355 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11356 | off = targ - off; | |
721956f4 | 11357 | |
ad8e1ba5 | 11358 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11359 | { |
25f53a85 | 11360 | info->callbacks->einfo |
695344c0 | 11361 | /* xgettext:c-format */ |
c1c8c1ef | 11362 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11363 | stub_entry->h != NULL |
11364 | ? stub_entry->h->elf.root.root.string | |
11365 | : "<local sym>"); | |
721956f4 | 11366 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11367 | htab->stub_error = TRUE; |
11368 | return FALSE; | |
721956f4 AM |
11369 | } |
11370 | ||
176a0d42 AM |
11371 | r = NULL; |
11372 | if (info->emitrelocations) | |
11373 | { | |
6f20ed8a | 11374 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11375 | ((PPC_HA (off) != 0) |
11376 | + (htab->opd_abi | |
e7d1c40c | 11377 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11378 | && PPC_HA (off + 16) == PPC_HA (off)) |
11379 | : 1))); | |
176a0d42 AM |
11380 | if (r == NULL) |
11381 | return FALSE; | |
6f20ed8a | 11382 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11383 | if (bfd_big_endian (info->output_bfd)) |
11384 | r[0].r_offset += 2; | |
1aa42141 | 11385 | r[0].r_addend = targ; |
176a0d42 | 11386 | } |
a7f2871e AM |
11387 | if (stub_entry->h != NULL |
11388 | && (stub_entry->h == htab->tls_get_addr_fd | |
11389 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11390 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11391 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11392 | else |
794e51c0 | 11393 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11394 | break; |
11395 | ||
a4b6fadd AM |
11396 | case ppc_stub_save_res: |
11397 | return TRUE; | |
11398 | ||
721956f4 AM |
11399 | default: |
11400 | BFD_FAIL (); | |
b34976b6 | 11401 | return FALSE; |
721956f4 AM |
11402 | } |
11403 | ||
1aa42141 | 11404 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11405 | |
e7d1c40c | 11406 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11407 | { |
11408 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11409 | size_t len1, len2; |
11410 | char *name; | |
11411 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11412 | "long_branch", |
11413 | "long_branch", | |
3f6ff479 AM |
11414 | "long_branch", |
11415 | "plt_branch", | |
ee75fd95 | 11416 | "plt_branch", |
05d0e962 AM |
11417 | "plt_branch", |
11418 | "plt_branch", | |
11419 | "plt_call", | |
11420 | "plt_call", | |
794e51c0 | 11421 | "plt_call", |
ee75fd95 AM |
11422 | "plt_call" }; |
11423 | ||
11424 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11425 | len2 = strlen (stub_entry->root.string); | |
11426 | name = bfd_malloc (len1 + len2 + 2); | |
11427 | if (name == NULL) | |
11428 | return FALSE; | |
11429 | memcpy (name, stub_entry->root.string, 9); | |
11430 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11431 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11432 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11433 | if (h == NULL) |
11434 | return FALSE; | |
11435 | if (h->root.type == bfd_link_hash_new) | |
11436 | { | |
11437 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11438 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11439 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11440 | h->ref_regular = 1; |
11441 | h->def_regular = 1; | |
11442 | h->ref_regular_nonweak = 1; | |
11443 | h->forced_local = 1; | |
11444 | h->non_elf = 0; | |
2ec55de3 | 11445 | h->root.linker_def = 1; |
97b639ba AM |
11446 | } |
11447 | } | |
11448 | ||
b34976b6 | 11449 | return TRUE; |
721956f4 AM |
11450 | } |
11451 | ||
11452 | /* As above, but don't actually build the stub. Just bump offset so | |
11453 | we know stub section sizes, and select plt_branch stubs where | |
11454 | long_branch stubs won't do. */ | |
11455 | ||
b34976b6 | 11456 | static bfd_boolean |
4ce794b7 | 11457 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11458 | { |
11459 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11460 | struct bfd_link_info *info; |
721956f4 | 11461 | struct ppc_link_hash_table *htab; |
f891966f AM |
11462 | asection *plt; |
11463 | bfd_vma targ, off, r2off; | |
04bdff6a | 11464 | unsigned int size, extra, lr_used, delta, odd; |
721956f4 AM |
11465 | |
11466 | /* Massage our args to the form they really have. */ | |
11467 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11468 | info = in_arg; |
11469 | ||
11470 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11471 | if (htab == NULL) |
11472 | return FALSE; | |
721956f4 | 11473 | |
1aa42141 AM |
11474 | /* Make a note of the offset within the stubs for this entry. */ |
11475 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11476 | ||
a4b6fadd AM |
11477 | if (stub_entry->h != NULL |
11478 | && stub_entry->h->save_res | |
11479 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11480 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11481 | { | |
11482 | /* Don't make stubs to out-of-line register save/restore | |
11483 | functions. Instead, emit copies of the functions. */ | |
11484 | stub_entry->group->needs_save_res = 1; | |
11485 | stub_entry->stub_type = ppc_stub_save_res; | |
11486 | return TRUE; | |
11487 | } | |
11488 | ||
f891966f | 11489 | switch (stub_entry->stub_type) |
721956f4 | 11490 | { |
f891966f AM |
11491 | case ppc_stub_plt_branch: |
11492 | case ppc_stub_plt_branch_r2off: | |
11493 | /* Reset the stub type from the plt branch variant in case we now | |
11494 | can reach with a shorter stub. */ | |
11495 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11496 | /* Fall through. */ | |
11497 | case ppc_stub_long_branch: | |
11498 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
11499 | targ = (stub_entry->target_value |
11500 | + stub_entry->target_section->output_offset | |
11501 | + stub_entry->target_section->output_section->vma); | |
f891966f | 11502 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
11503 | off = (stub_entry->stub_offset |
11504 | + stub_entry->group->stub_sec->output_offset | |
11505 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11506 | |
ad8e1ba5 | 11507 | size = 4; |
f891966f | 11508 | r2off = 0; |
ad8e1ba5 AM |
11509 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
11510 | { | |
25f53a85 | 11511 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11512 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11513 | { |
11514 | htab->stub_error = TRUE; | |
11515 | return FALSE; | |
11516 | } | |
a7c49797 | 11517 | size = 8; |
ac2df442 | 11518 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11519 | size += 4; |
11520 | if (PPC_LO (r2off) != 0) | |
11521 | size += 4; | |
1aa42141 | 11522 | off += size - 4; |
ad8e1ba5 | 11523 | } |
1aa42141 | 11524 | off = targ - off; |
ad8e1ba5 | 11525 | |
f891966f AM |
11526 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
11527 | Do the same for -R objects without function descriptors. */ | |
11528 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
11529 | && r2off == 0 | |
11530 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
11531 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 11532 | { |
f891966f | 11533 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 11534 | |
f891966f AM |
11535 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11536 | stub_entry->root.string + 9, | |
11537 | TRUE, FALSE); | |
11538 | if (br_entry == NULL) | |
721956f4 | 11539 | { |
f891966f AM |
11540 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11541 | stub_entry->root.string); | |
11542 | htab->stub_error = TRUE; | |
11543 | return FALSE; | |
721956f4 AM |
11544 | } |
11545 | ||
f891966f | 11546 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 11547 | { |
f891966f AM |
11548 | br_entry->iter = htab->stub_iteration; |
11549 | br_entry->offset = htab->brlt->size; | |
11550 | htab->brlt->size += 8; | |
63bc6f6c | 11551 | |
f891966f AM |
11552 | if (htab->relbrlt != NULL) |
11553 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
11554 | else if (info->emitrelocations) | |
84f5d08e | 11555 | { |
f891966f AM |
11556 | htab->brlt->reloc_count += 1; |
11557 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 11558 | } |
f891966f | 11559 | } |
ac2df442 | 11560 | |
f891966f AM |
11561 | targ = (br_entry->offset |
11562 | + htab->brlt->output_offset | |
11563 | + htab->brlt->output_section->vma); | |
11564 | off = (elf_gp (info->output_bfd) | |
11565 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11566 | off = targ - off; | |
176a0d42 | 11567 | |
f891966f AM |
11568 | if (info->emitrelocations) |
11569 | { | |
11570 | stub_entry->group->stub_sec->reloc_count | |
11571 | += 1 + (PPC_HA (off) != 0); | |
11572 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11573 | } | |
05d0e962 | 11574 | |
f891966f AM |
11575 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
11576 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
11577 | { | |
11578 | size = 12; | |
11579 | if (PPC_HA (off) != 0) | |
11580 | size = 16; | |
ac2df442 | 11581 | } |
f891966f | 11582 | else |
ac2df442 | 11583 | { |
f891966f AM |
11584 | size = 16; |
11585 | if (PPC_HA (off) != 0) | |
11586 | size += 4; | |
11587 | ||
11588 | if (PPC_HA (r2off) != 0) | |
11589 | size += 4; | |
11590 | if (PPC_LO (r2off) != 0) | |
11591 | size += 4; | |
ac2df442 | 11592 | } |
721956f4 | 11593 | } |
f891966f AM |
11594 | else if (info->emitrelocations) |
11595 | { | |
11596 | stub_entry->group->stub_sec->reloc_count += 1; | |
11597 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11598 | } | |
11599 | break; | |
11600 | ||
11601 | case ppc_stub_plt_branch_notoc: | |
11602 | case ppc_stub_plt_branch_both: | |
11603 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11604 | /* Fall through. */ | |
11605 | case ppc_stub_long_branch_notoc: | |
11606 | case ppc_stub_long_branch_both: | |
11607 | off = (stub_entry->stub_offset | |
11608 | + stub_entry->group->stub_sec->output_offset | |
11609 | + stub_entry->group->stub_sec->output_section->vma); | |
11610 | size = 0; | |
11611 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
11612 | size = 4; | |
11613 | off += size; | |
11614 | targ = (stub_entry->target_value | |
11615 | + stub_entry->target_section->output_offset | |
11616 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11617 | odd = off & 4; |
f891966f AM |
11618 | off = targ - off; |
11619 | ||
3d58e1fc AM |
11620 | if (info->emitrelocations) |
11621 | { | |
04bdff6a AM |
11622 | unsigned int num_rel; |
11623 | if (htab->powerxx_stubs) | |
11624 | num_rel = num_relocs_for_powerxx_offset (off, odd); | |
11625 | else | |
11626 | num_rel = num_relocs_for_offset (off - 8); | |
11627 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
11628 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
11629 | } | |
11630 | ||
04bdff6a AM |
11631 | if (htab->powerxx_stubs) |
11632 | extra = size_powerxx_offset (off, odd); | |
11633 | else | |
11634 | extra = size_offset (off - 8); | |
f891966f AM |
11635 | /* Include branch insn plus those in the offset sequence. */ |
11636 | size += 4 + extra; | |
11637 | /* The branch insn is at the end, or "extra" bytes along. So | |
11638 | its offset will be "extra" bytes less that that already | |
11639 | calculated. */ | |
11640 | off -= extra; | |
11641 | ||
04bdff6a AM |
11642 | if (!htab->powerxx_stubs) |
11643 | { | |
11644 | /* After the bcl, lr has been modified so we need to emit | |
11645 | .eh_frame info saying the return address is in r12. */ | |
11646 | lr_used = stub_entry->stub_offset + 8; | |
11647 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
11648 | lr_used += 4; | |
11649 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
11650 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
11651 | DW_CFA_restore_extended 65. */ | |
11652 | delta = lr_used - stub_entry->group->lr_restore; | |
11653 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11654 | stub_entry->group->lr_restore = lr_used + 8; | |
11655 | } | |
f891966f AM |
11656 | |
11657 | /* If the branch can't reach, use a plt_branch. */ | |
11658 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
11659 | { | |
11660 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
11661 | - ppc_stub_long_branch_notoc); | |
11662 | size += 4; | |
11663 | } | |
3d58e1fc AM |
11664 | else if (info->emitrelocations) |
11665 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
11666 | break; |
11667 | ||
11668 | case ppc_stub_plt_call_notoc: | |
11669 | case ppc_stub_plt_call_both: | |
11670 | off = (stub_entry->stub_offset | |
11671 | + stub_entry->group->stub_sec->output_offset | |
11672 | + stub_entry->group->stub_sec->output_section->vma); | |
11673 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
11674 | off += 4; | |
11675 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11676 | if (targ >= (bfd_vma) -2) | |
11677 | abort (); | |
11678 | ||
11679 | plt = htab->elf.splt; | |
11680 | if (!htab->elf.dynamic_sections_created | |
11681 | || stub_entry->h == NULL | |
11682 | || stub_entry->h->elf.dynindx == -1) | |
11683 | { | |
11684 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11685 | plt = htab->elf.iplt; | |
11686 | else | |
11687 | plt = htab->pltlocal; | |
11688 | } | |
11689 | targ += plt->output_offset + plt->output_section->vma; | |
04bdff6a | 11690 | odd = off & 4; |
f891966f AM |
11691 | off = targ - off; |
11692 | ||
11693 | if (htab->params->plt_stub_align != 0) | |
11694 | { | |
11695 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11696 | ||
11697 | stub_entry->group->stub_sec->size += pad; | |
11698 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11699 | off -= pad; | |
11700 | } | |
11701 | ||
3d58e1fc AM |
11702 | if (info->emitrelocations) |
11703 | { | |
04bdff6a AM |
11704 | unsigned int num_rel; |
11705 | if (htab->powerxx_stubs) | |
11706 | num_rel = num_relocs_for_powerxx_offset (off, odd); | |
11707 | else | |
11708 | num_rel = num_relocs_for_offset (off - 8); | |
11709 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
11710 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
11711 | } | |
11712 | ||
f891966f AM |
11713 | size = plt_stub_size (htab, stub_entry, off); |
11714 | ||
04bdff6a AM |
11715 | if (!htab->powerxx_stubs) |
11716 | { | |
11717 | /* After the bcl, lr has been modified so we need to emit | |
11718 | .eh_frame info saying the return address is in r12. */ | |
11719 | lr_used = stub_entry->stub_offset + 8; | |
11720 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
11721 | lr_used += 4; | |
11722 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
11723 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
11724 | DW_CFA_restore_extended 65. */ | |
11725 | delta = lr_used - stub_entry->group->lr_restore; | |
11726 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11727 | stub_entry->group->lr_restore = lr_used + 8; | |
11728 | } | |
f891966f AM |
11729 | break; |
11730 | ||
11731 | case ppc_stub_plt_call: | |
11732 | case ppc_stub_plt_call_r2save: | |
11733 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
11734 | if (targ >= (bfd_vma) -2) | |
11735 | abort (); | |
11736 | plt = htab->elf.splt; | |
11737 | if (!htab->elf.dynamic_sections_created | |
11738 | || stub_entry->h == NULL | |
11739 | || stub_entry->h->elf.dynindx == -1) | |
11740 | { | |
11741 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11742 | plt = htab->elf.iplt; | |
11743 | else | |
11744 | plt = htab->pltlocal; | |
11745 | } | |
11746 | targ += plt->output_offset + plt->output_section->vma; | |
11747 | ||
11748 | off = (elf_gp (info->output_bfd) | |
11749 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11750 | off = targ - off; | |
11751 | ||
11752 | if (htab->params->plt_stub_align != 0) | |
11753 | { | |
11754 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11755 | ||
11756 | stub_entry->group->stub_sec->size += pad; | |
11757 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11758 | } | |
11759 | ||
11760 | if (info->emitrelocations) | |
11761 | { | |
11762 | stub_entry->group->stub_sec->reloc_count | |
11763 | += ((PPC_HA (off) != 0) | |
11764 | + (htab->opd_abi | |
11765 | ? 2 + (htab->params->plt_static_chain | |
11766 | && PPC_HA (off + 16) == PPC_HA (off)) | |
11767 | : 1)); | |
11768 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11769 | } | |
11770 | ||
11771 | size = plt_stub_size (htab, stub_entry, off); | |
11772 | ||
11773 | if (stub_entry->h != NULL | |
11774 | && (stub_entry->h == htab->tls_get_addr_fd | |
11775 | || stub_entry->h == htab->tls_get_addr) | |
11776 | && htab->params->tls_get_addr_opt | |
11777 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11778 | { | |
11779 | /* After the bctrl, lr has been modified so we need to | |
11780 | emit .eh_frame info saying the return address is | |
11781 | on the stack. In fact we put the EH info specifying | |
11782 | that the return address is on the stack *at* the | |
11783 | call rather than after it, because the EH info for a | |
11784 | call needs to be specified by that point. | |
11785 | See libgcc/unwind-dw2.c execute_cfa_program. */ | |
11786 | lr_used = stub_entry->stub_offset + size - 20; | |
11787 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
11788 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
11789 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
11790 | delta = lr_used - stub_entry->group->lr_restore; | |
11791 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11792 | stub_entry->group->lr_restore = size - 4; | |
11793 | } | |
11794 | break; | |
11795 | ||
11796 | default: | |
11797 | BFD_FAIL (); | |
11798 | return FALSE; | |
721956f4 AM |
11799 | } |
11800 | ||
6f20ed8a | 11801 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11802 | return TRUE; |
721956f4 AM |
11803 | } |
11804 | ||
11805 | /* Set up various things so that we can make a list of input sections | |
11806 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11807 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11808 | |
11809 | int | |
e7d1c40c | 11810 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11811 | { |
6f20ed8a | 11812 | unsigned int id; |
721956f4 AM |
11813 | bfd_size_type amt; |
11814 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11815 | ||
4dfe6ac6 NC |
11816 | if (htab == NULL) |
11817 | return -1; | |
4c52953f | 11818 | |
7cf7fcc8 | 11819 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
11820 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
11821 | htab->sec_info = bfd_zmalloc (amt); | |
11822 | if (htab->sec_info == NULL) | |
721956f4 AM |
11823 | return -1; |
11824 | ||
3d6f9012 AM |
11825 | /* Set toc_off for com, und, abs and ind sections. */ |
11826 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11827 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11828 | |
721956f4 AM |
11829 | return 1; |
11830 | } | |
11831 | ||
927be08e AM |
11832 | /* Set up for first pass at multitoc partitioning. */ |
11833 | ||
11834 | void | |
11835 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11836 | { | |
11837 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11838 | ||
1c865ab2 | 11839 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11840 | htab->toc_bfd = NULL; |
11841 | htab->toc_first_sec = NULL; | |
11842 | } | |
11843 | ||
e717da7e AM |
11844 | /* The linker repeatedly calls this function for each TOC input section |
11845 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11846 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11847 | |
927be08e | 11848 | bfd_boolean |
4ce794b7 | 11849 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11850 | { |
11851 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11852 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11853 | |
4dfe6ac6 NC |
11854 | if (htab == NULL) |
11855 | return FALSE; | |
11856 | ||
927be08e | 11857 | if (!htab->second_toc_pass) |
4c52953f | 11858 | { |
927be08e | 11859 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11860 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11861 | ||
11862 | if (new_bfd) | |
bf102f86 AM |
11863 | { |
11864 | htab->toc_bfd = isec->owner; | |
11865 | htab->toc_first_sec = isec; | |
11866 | } | |
927be08e | 11867 | |
bf102f86 AM |
11868 | addr = isec->output_offset + isec->output_section->vma; |
11869 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11870 | limit = 0x80008000; |
11871 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11872 | limit = 0x10000; | |
11873 | if (off + isec->size > limit) | |
bf102f86 AM |
11874 | { |
11875 | addr = (htab->toc_first_sec->output_offset | |
11876 | + htab->toc_first_sec->output_section->vma); | |
11877 | htab->toc_curr = addr; | |
a27e685f | 11878 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11879 | } |
99877b66 | 11880 | |
927be08e AM |
11881 | /* toc_curr is the base address of this toc group. Set elf_gp |
11882 | for the input section to be the offset relative to the | |
11883 | output toc base plus 0x8000. Making the input elf_gp an | |
11884 | offset allows us to move the toc as a whole without | |
11885 | recalculating input elf_gp. */ | |
06bcf541 | 11886 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
11887 | off += TOC_BASE_OFF; |
11888 | ||
11889 | /* Die if someone uses a linker script that doesn't keep input | |
11890 | file .toc and .got together. */ | |
a4fd3de5 AM |
11891 | if (new_bfd |
11892 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11893 | && elf_gp (isec->owner) != off) |
11894 | return FALSE; | |
11895 | ||
11896 | elf_gp (isec->owner) = off; | |
11897 | return TRUE; | |
4c52953f | 11898 | } |
927be08e AM |
11899 | |
11900 | /* During the second pass toc_first_sec points to the start of | |
11901 | a toc group, and toc_curr is used to track the old elf_gp. | |
11902 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11903 | if (htab->toc_bfd == isec->owner) | |
11904 | return TRUE; | |
11905 | htab->toc_bfd = isec->owner; | |
11906 | ||
11907 | if (htab->toc_first_sec == NULL | |
11908 | || htab->toc_curr != elf_gp (isec->owner)) | |
11909 | { | |
11910 | htab->toc_curr = elf_gp (isec->owner); | |
11911 | htab->toc_first_sec = isec; | |
11912 | } | |
11913 | addr = (htab->toc_first_sec->output_offset | |
11914 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 11915 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
11916 | elf_gp (isec->owner) = off; |
11917 | ||
11918 | return TRUE; | |
ad8e1ba5 AM |
11919 | } |
11920 | ||
927be08e AM |
11921 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11922 | symbol H. */ | |
11923 | ||
11924 | static bfd_boolean | |
11925 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11926 | { | |
11927 | if (h->root.type == bfd_link_hash_indirect) | |
11928 | return TRUE; | |
11929 | ||
927be08e AM |
11930 | merge_got_entries (&h->got.glist); |
11931 | ||
11932 | return TRUE; | |
11933 | } | |
11934 | ||
11935 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11936 | symbol H. */ | |
11937 | ||
11938 | static bfd_boolean | |
11939 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11940 | { | |
11941 | struct got_entry *gent; | |
11942 | ||
11943 | if (h->root.type == bfd_link_hash_indirect) | |
11944 | return TRUE; | |
11945 | ||
927be08e AM |
11946 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11947 | if (!gent->is_indirect) | |
11948 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11949 | return TRUE; | |
11950 | } | |
11951 | ||
11952 | /* Called on the first multitoc pass after the last call to | |
11953 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11954 | entries. */ | |
11955 | ||
11956 | bfd_boolean | |
11957 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11958 | { |
11959 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11960 | struct bfd *ibfd, *ibfd2; |
11961 | bfd_boolean done_something; | |
11962 | ||
11963 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11964 | |
7865406b AM |
11965 | if (!htab->do_multi_toc) |
11966 | return FALSE; | |
11967 | ||
d0fae19d | 11968 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11969 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11970 | ||
11971 | /* And tlsld_got. */ | |
c72f2fb2 | 11972 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11973 | { |
11974 | struct got_entry *ent, *ent2; | |
11975 | ||
11976 | if (!is_ppc64_elf (ibfd)) | |
11977 | continue; | |
11978 | ||
11979 | ent = ppc64_tlsld_got (ibfd); | |
11980 | if (!ent->is_indirect | |
11981 | && ent->got.offset != (bfd_vma) -1) | |
11982 | { | |
c72f2fb2 | 11983 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11984 | { |
11985 | if (!is_ppc64_elf (ibfd2)) | |
11986 | continue; | |
11987 | ||
11988 | ent2 = ppc64_tlsld_got (ibfd2); | |
11989 | if (!ent2->is_indirect | |
11990 | && ent2->got.offset != (bfd_vma) -1 | |
11991 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11992 | { | |
11993 | ent2->is_indirect = TRUE; | |
11994 | ent2->got.ent = ent; | |
11995 | } | |
11996 | } | |
11997 | } | |
11998 | } | |
11999 | ||
12000 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12001 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12002 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12003 | htab->got_reli_size = 0; |
12004 | ||
c72f2fb2 | 12005 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12006 | { |
12007 | asection *got, *relgot; | |
12008 | ||
12009 | if (!is_ppc64_elf (ibfd)) | |
12010 | continue; | |
12011 | ||
12012 | got = ppc64_elf_tdata (ibfd)->got; | |
12013 | if (got != NULL) | |
12014 | { | |
12015 | got->rawsize = got->size; | |
12016 | got->size = 0; | |
12017 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12018 | relgot->rawsize = relgot->size; | |
12019 | relgot->size = 0; | |
12020 | } | |
12021 | } | |
12022 | ||
12023 | /* Now reallocate the got, local syms first. We don't need to | |
12024 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12025 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12026 | { |
12027 | struct got_entry **lgot_ents; | |
12028 | struct got_entry **end_lgot_ents; | |
12029 | struct plt_entry **local_plt; | |
12030 | struct plt_entry **end_local_plt; | |
f961d9dd | 12031 | unsigned char *lgot_masks; |
927be08e AM |
12032 | bfd_size_type locsymcount; |
12033 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12034 | asection *s; |
927be08e AM |
12035 | |
12036 | if (!is_ppc64_elf (ibfd)) | |
12037 | continue; | |
12038 | ||
12039 | lgot_ents = elf_local_got_ents (ibfd); | |
12040 | if (!lgot_ents) | |
12041 | continue; | |
12042 | ||
12043 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12044 | locsymcount = symtab_hdr->sh_info; | |
12045 | end_lgot_ents = lgot_ents + locsymcount; | |
12046 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12047 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12048 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12049 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12050 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12051 | { | |
12052 | struct got_entry *ent; | |
12053 | ||
12054 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12055 | { |
19e08130 AM |
12056 | unsigned int ent_size = 8; |
12057 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12058 | ||
d0fae19d AM |
12059 | ent->got.offset = s->size; |
12060 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12061 | { |
19e08130 AM |
12062 | ent_size *= 2; |
12063 | rel_size *= 2; | |
12064 | } | |
12065 | s->size += ent_size; | |
37da22e5 | 12066 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12067 | { |
33e44f2e | 12068 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12069 | htab->got_reli_size += rel_size; |
12070 | } | |
6a3858a6 AM |
12071 | else if (bfd_link_pic (info) |
12072 | && !((ent->tls_type & TLS_TPREL) != 0 | |
12073 | && bfd_link_executable (info))) | |
19e08130 AM |
12074 | { |
12075 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12076 | srel->size += rel_size; | |
d0fae19d AM |
12077 | } |
12078 | } | |
927be08e AM |
12079 | } |
12080 | } | |
12081 | ||
12082 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12083 | ||
c72f2fb2 | 12084 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12085 | { |
12086 | struct got_entry *ent; | |
12087 | ||
12088 | if (!is_ppc64_elf (ibfd)) | |
12089 | continue; | |
12090 | ||
12091 | ent = ppc64_tlsld_got (ibfd); | |
12092 | if (!ent->is_indirect | |
12093 | && ent->got.offset != (bfd_vma) -1) | |
12094 | { | |
12095 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12096 | ent->got.offset = s->size; | |
12097 | s->size += 16; | |
0e1862bb | 12098 | if (bfd_link_pic (info)) |
927be08e AM |
12099 | { |
12100 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12101 | srel->size += sizeof (Elf64_External_Rela); | |
12102 | } | |
12103 | } | |
12104 | } | |
12105 | ||
33e44f2e | 12106 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12107 | if (!done_something) |
c72f2fb2 | 12108 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12109 | { |
12110 | asection *got; | |
12111 | ||
12112 | if (!is_ppc64_elf (ibfd)) | |
12113 | continue; | |
12114 | ||
12115 | got = ppc64_elf_tdata (ibfd)->got; | |
12116 | if (got != NULL) | |
12117 | { | |
12118 | done_something = got->rawsize != got->size; | |
12119 | if (done_something) | |
12120 | break; | |
12121 | } | |
12122 | } | |
12123 | ||
12124 | if (done_something) | |
e7d1c40c | 12125 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12126 | |
12127 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12128 | on input sections. */ | |
12129 | htab->toc_bfd = NULL; | |
12130 | htab->toc_first_sec = NULL; | |
12131 | htab->second_toc_pass = TRUE; | |
12132 | return done_something; | |
12133 | } | |
12134 | ||
12135 | /* Called after second pass of multitoc partitioning. */ | |
12136 | ||
12137 | void | |
12138 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12139 | { | |
12140 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12141 | ||
12142 | /* After the second pass, toc_curr tracks the TOC offset used | |
12143 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12144 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12145 | } |
12146 | ||
9b5ecbd0 AM |
12147 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12148 | calls, then there's no need to use toc adjusting stubs when branching | |
12149 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12150 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12151 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12152 | for a stub was detected. If called from the top level, a return of | |
12153 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12154 | |
12155 | static int | |
4ce794b7 | 12156 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12157 | { |
9b5ecbd0 | 12158 | int ret; |
70cc837d AM |
12159 | |
12160 | /* Mark this section as checked. */ | |
12161 | isec->call_check_done = 1; | |
9b5ecbd0 | 12162 | |
772119ce AM |
12163 | /* We know none of our code bearing sections will need toc stubs. */ |
12164 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12165 | return 0; | |
12166 | ||
eea6121a | 12167 | if (isec->size == 0) |
082c50f8 AM |
12168 | return 0; |
12169 | ||
4c52953f AM |
12170 | if (isec->output_section == NULL) |
12171 | return 0; | |
12172 | ||
4c52953f | 12173 | ret = 0; |
70cc837d | 12174 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12175 | { |
70cc837d AM |
12176 | Elf_Internal_Rela *relstart, *rel; |
12177 | Elf_Internal_Sym *local_syms; | |
12178 | struct ppc_link_hash_table *htab; | |
2917689a | 12179 | |
70cc837d AM |
12180 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12181 | info->keep_memory); | |
12182 | if (relstart == NULL) | |
12183 | return -1; | |
90aecf7a | 12184 | |
70cc837d AM |
12185 | /* Look for branches to outside of this section. */ |
12186 | local_syms = NULL; | |
12187 | htab = ppc_hash_table (info); | |
12188 | if (htab == NULL) | |
12189 | return -1; | |
4c52953f | 12190 | |
70cc837d | 12191 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12192 | { |
70cc837d AM |
12193 | enum elf_ppc64_reloc_type r_type; |
12194 | unsigned long r_symndx; | |
12195 | struct elf_link_hash_entry *h; | |
12196 | struct ppc_link_hash_entry *eh; | |
12197 | Elf_Internal_Sym *sym; | |
12198 | asection *sym_sec; | |
12199 | struct _opd_sec_data *opd; | |
12200 | bfd_vma sym_value; | |
12201 | bfd_vma dest; | |
12202 | ||
12203 | r_type = ELF64_R_TYPE (rel->r_info); | |
12204 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12205 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12206 | && r_type != R_PPC64_REL14 |
12207 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 12208 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
12209 | && r_type != R_PPC64_PLTCALL |
12210 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 12211 | continue; |
4c52953f | 12212 | |
70cc837d AM |
12213 | r_symndx = ELF64_R_SYM (rel->r_info); |
12214 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12215 | isec->owner)) | |
4c52953f | 12216 | { |
70cc837d AM |
12217 | ret = -1; |
12218 | break; | |
12219 | } | |
4c52953f | 12220 | |
70cc837d AM |
12221 | /* Calls to dynamic lib functions go through a plt call stub |
12222 | that uses r2. */ | |
12223 | eh = (struct ppc_link_hash_entry *) h; | |
12224 | if (eh != NULL | |
12225 | && (eh->elf.plt.plist != NULL | |
12226 | || (eh->oh != NULL | |
12227 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12228 | { | |
12229 | ret = 1; | |
12230 | break; | |
4c52953f AM |
12231 | } |
12232 | ||
70cc837d AM |
12233 | if (sym_sec == NULL) |
12234 | /* Ignore other undefined symbols. */ | |
4c52953f | 12235 | continue; |
4c52953f | 12236 | |
70cc837d AM |
12237 | /* Assume branches to other sections not included in the |
12238 | link need stubs too, to cover -R and absolute syms. */ | |
12239 | if (sym_sec->output_section == NULL) | |
12240 | { | |
12241 | ret = 1; | |
12242 | break; | |
12243 | } | |
4c52953f | 12244 | |
70cc837d AM |
12245 | if (h == NULL) |
12246 | sym_value = sym->st_value; | |
12247 | else | |
12248 | { | |
12249 | if (h->root.type != bfd_link_hash_defined | |
12250 | && h->root.type != bfd_link_hash_defweak) | |
12251 | abort (); | |
12252 | sym_value = h->root.u.def.value; | |
12253 | } | |
12254 | sym_value += rel->r_addend; | |
4c52953f | 12255 | |
70cc837d AM |
12256 | /* If this branch reloc uses an opd sym, find the code section. */ |
12257 | opd = get_opd_info (sym_sec); | |
12258 | if (opd != NULL) | |
12259 | { | |
12260 | if (h == NULL && opd->adjust != NULL) | |
12261 | { | |
12262 | long adjust; | |
4c52953f | 12263 | |
92a9c616 | 12264 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12265 | if (adjust == -1) |
12266 | /* Assume deleted functions won't ever be called. */ | |
12267 | continue; | |
12268 | sym_value += adjust; | |
12269 | } | |
4c52953f | 12270 | |
aef36ac1 AM |
12271 | dest = opd_entry_value (sym_sec, sym_value, |
12272 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12273 | if (dest == (bfd_vma) -1) |
12274 | continue; | |
12275 | } | |
12276 | else | |
12277 | dest = (sym_value | |
12278 | + sym_sec->output_offset | |
12279 | + sym_sec->output_section->vma); | |
4c52953f | 12280 | |
70cc837d AM |
12281 | /* Ignore branch to self. */ |
12282 | if (sym_sec == isec) | |
12283 | continue; | |
4c52953f | 12284 | |
70cc837d AM |
12285 | /* If the called function uses the toc, we need a stub. */ |
12286 | if (sym_sec->has_toc_reloc | |
12287 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12288 | { |
70cc837d | 12289 | ret = 1; |
4c52953f AM |
12290 | break; |
12291 | } | |
70cc837d AM |
12292 | |
12293 | /* Assume any branch that needs a long branch stub might in fact | |
12294 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12295 | else if (dest - (isec->output_offset | |
12296 | + isec->output_section->vma | |
6911b7dc AM |
12297 | + rel->r_offset) + (1 << 25) |
12298 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12299 | ? h->other | |
12300 | : sym->st_other)) | |
4c52953f | 12301 | { |
70cc837d AM |
12302 | ret = 1; |
12303 | break; | |
12304 | } | |
12305 | ||
12306 | /* If calling back to a section in the process of being | |
12307 | tested, we can't say for sure that no toc adjusting stubs | |
12308 | are needed, so don't return zero. */ | |
12309 | else if (sym_sec->call_check_in_progress) | |
12310 | ret = 2; | |
12311 | ||
12312 | /* Branches to another section that itself doesn't have any TOC | |
12313 | references are OK. Recursively call ourselves to check. */ | |
12314 | else if (!sym_sec->call_check_done) | |
12315 | { | |
12316 | int recur; | |
12317 | ||
12318 | /* Mark current section as indeterminate, so that other | |
12319 | sections that call back to current won't be marked as | |
12320 | known. */ | |
12321 | isec->call_check_in_progress = 1; | |
12322 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12323 | isec->call_check_in_progress = 0; | |
12324 | ||
4c52953f AM |
12325 | if (recur != 0) |
12326 | { | |
70cc837d AM |
12327 | ret = recur; |
12328 | if (recur != 2) | |
12329 | break; | |
4c52953f AM |
12330 | } |
12331 | } | |
4c52953f | 12332 | } |
70cc837d AM |
12333 | |
12334 | if (local_syms != NULL | |
12335 | && (elf_symtab_hdr (isec->owner).contents | |
12336 | != (unsigned char *) local_syms)) | |
12337 | free (local_syms); | |
12338 | if (elf_section_data (isec)->relocs != relstart) | |
12339 | free (relstart); | |
9b5ecbd0 AM |
12340 | } |
12341 | ||
70cc837d AM |
12342 | if ((ret & 1) == 0 |
12343 | && isec->map_head.s != NULL | |
12344 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12345 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12346 | { | |
12347 | if (isec->map_head.s->has_toc_reloc | |
12348 | || isec->map_head.s->makes_toc_func_call) | |
12349 | ret = 1; | |
12350 | else if (!isec->map_head.s->call_check_done) | |
12351 | { | |
12352 | int recur; | |
12353 | isec->call_check_in_progress = 1; | |
12354 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12355 | isec->call_check_in_progress = 0; | |
12356 | if (recur != 0) | |
12357 | ret = recur; | |
12358 | } | |
12359 | } | |
12360 | ||
12361 | if (ret == 1) | |
12362 | isec->makes_toc_func_call = 1; | |
4c52953f | 12363 | |
9b5ecbd0 AM |
12364 | return ret; |
12365 | } | |
12366 | ||
721956f4 AM |
12367 | /* The linker repeatedly calls this function for each input section, |
12368 | in the order that input sections are linked into output sections. | |
12369 | Build lists of input sections to determine groupings between which | |
12370 | we may insert linker stubs. */ | |
12371 | ||
9b5ecbd0 | 12372 | bfd_boolean |
4ce794b7 | 12373 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12374 | { |
12375 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12376 | ||
4dfe6ac6 NC |
12377 | if (htab == NULL) |
12378 | return FALSE; | |
12379 | ||
734b6cf9 | 12380 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12381 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12382 | { |
3d6f9012 AM |
12383 | /* This happens to make the list in reverse order, |
12384 | which is what we want. */ | |
6f20ed8a AM |
12385 | htab->sec_info[isec->id].u.list |
12386 | = htab->sec_info[isec->output_section->id].u.list; | |
12387 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12388 | } |
ad8e1ba5 | 12389 | |
4c52953f | 12390 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12391 | { |
8b974ba3 AM |
12392 | /* Analyse sections that aren't already flagged as needing a |
12393 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12394 | .fixup contains branches, but only back to the function that | |
12395 | hit an exception. */ | |
12396 | if (!(isec->has_toc_reloc | |
12397 | || (isec->flags & SEC_CODE) == 0 | |
12398 | || strcmp (isec->name, ".fixup") == 0 | |
12399 | || isec->call_check_done)) | |
12400 | { | |
12401 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12402 | return FALSE; |
8b974ba3 AM |
12403 | } |
12404 | /* Make all sections use the TOC assigned for this object file. | |
12405 | This will be wrong for pasted sections; We fix that in | |
12406 | check_pasted_section(). */ | |
12407 | if (elf_gp (isec->owner) != 0) | |
12408 | htab->toc_curr = elf_gp (isec->owner); | |
12409 | } | |
12410 | ||
6f20ed8a | 12411 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12412 | return TRUE; |
721956f4 AM |
12413 | } |
12414 | ||
70cc837d AM |
12415 | /* Check that all .init and .fini sections use the same toc, if they |
12416 | have toc relocs. */ | |
12417 | ||
12418 | static bfd_boolean | |
12419 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12420 | { | |
12421 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12422 | ||
12423 | if (o != NULL) | |
12424 | { | |
12425 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12426 | bfd_vma toc_off = 0; | |
12427 | asection *i; | |
12428 | ||
12429 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12430 | if (i->has_toc_reloc) | |
12431 | { | |
12432 | if (toc_off == 0) | |
6f20ed8a AM |
12433 | toc_off = htab->sec_info[i->id].toc_off; |
12434 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12435 | return FALSE; |
12436 | } | |
6683a28d AM |
12437 | |
12438 | if (toc_off == 0) | |
12439 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12440 | if (i->makes_toc_func_call) | |
12441 | { | |
6f20ed8a | 12442 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12443 | break; |
12444 | } | |
12445 | ||
70cc837d AM |
12446 | /* Make sure the whole pasted function uses the same toc offset. */ |
12447 | if (toc_off != 0) | |
12448 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12449 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12450 | } |
12451 | return TRUE; | |
12452 | } | |
12453 | ||
12454 | bfd_boolean | |
12455 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12456 | { | |
12457 | return (check_pasted_section (info, ".init") | |
12458 | & check_pasted_section (info, ".fini")); | |
12459 | } | |
12460 | ||
721956f4 AM |
12461 | /* See whether we can group stub sections together. Grouping stub |
12462 | sections may result in fewer stubs. More importantly, we need to | |
12463 | put all .init* and .fini* stubs at the beginning of the .init or | |
12464 | .fini output sections respectively, because glibc splits the | |
12465 | _init and _fini functions into multiple parts. Putting a stub in | |
12466 | the middle of a function is not a good idea. */ | |
12467 | ||
6f20ed8a AM |
12468 | static bfd_boolean |
12469 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12470 | bfd_size_type stub_group_size, |
12471 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12472 | { |
6f20ed8a AM |
12473 | struct ppc_link_hash_table *htab; |
12474 | asection *osec; | |
7c8fe5c4 AM |
12475 | bfd_boolean suppress_size_errors; |
12476 | ||
6f20ed8a AM |
12477 | htab = ppc_hash_table (info); |
12478 | if (htab == NULL) | |
12479 | return FALSE; | |
12480 | ||
7c8fe5c4 | 12481 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12482 | if (stub_group_size == 1) |
12483 | { | |
12484 | /* Default values. */ | |
12485 | if (stubs_always_before_branch) | |
09f92717 | 12486 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12487 | else |
09f92717 | 12488 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12489 | suppress_size_errors = TRUE; |
12490 | } | |
12491 | ||
6f20ed8a | 12492 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12493 | { |
6f20ed8a AM |
12494 | asection *tail; |
12495 | ||
12496 | if (osec->id >= htab->sec_info_arr_size) | |
12497 | continue; | |
12498 | ||
12499 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12500 | while (tail != NULL) |
721956f4 | 12501 | { |
734b6cf9 AM |
12502 | asection *curr; |
12503 | asection *prev; | |
12504 | bfd_size_type total; | |
12505 | bfd_boolean big_sec; | |
12506 | bfd_vma curr_toc; | |
6f20ed8a | 12507 | struct map_stub *group; |
09f92717 | 12508 | bfd_size_type group_size; |
734b6cf9 AM |
12509 | |
12510 | curr = tail; | |
eea6121a | 12511 | total = tail->size; |
09f92717 AM |
12512 | group_size = (ppc64_elf_section_data (tail) != NULL |
12513 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12514 | ? stub_group_size >> 10 : stub_group_size); | |
12515 | ||
12516 | big_sec = total > group_size; | |
7c8fe5c4 | 12517 | if (big_sec && !suppress_size_errors) |
695344c0 | 12518 | /* xgettext:c-format */ |
871b3ab2 | 12519 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12520 | tail->owner, tail); |
6f20ed8a | 12521 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12522 | |
6f20ed8a | 12523 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12524 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12525 | < (ppc64_elf_section_data (prev) != NULL |
12526 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12527 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12528 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12529 | curr = prev; |
12530 | ||
12531 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12532 | than group_size and thus can be handled by one stub |
734b6cf9 | 12533 | section. (or the tail section is itself larger than |
09f92717 AM |
12534 | group_size, in which case we may be toast.) We should |
12535 | really be keeping track of the total size of stubs added | |
12536 | here, as stubs contribute to the final output section | |
12537 | size. That's a little tricky, and this way will only | |
12538 | break if stubs added make the total size more than 2^25, | |
12539 | ie. for the default stub_group_size, if stubs total more | |
12540 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12541 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12542 | if (group == NULL) | |
12543 | return FALSE; | |
12544 | group->link_sec = curr; | |
12545 | group->stub_sec = NULL; | |
a4b6fadd | 12546 | group->needs_save_res = 0; |
df136d64 AM |
12547 | group->lr_restore = 0; |
12548 | group->eh_size = 0; | |
12549 | group->eh_base = 0; | |
a4b6fadd AM |
12550 | group->next = htab->group; |
12551 | htab->group = group; | |
734b6cf9 | 12552 | do |
721956f4 | 12553 | { |
6f20ed8a | 12554 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12555 | /* Set up this stub group. */ |
6f20ed8a | 12556 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12557 | } |
734b6cf9 AM |
12558 | while (tail != curr && (tail = prev) != NULL); |
12559 | ||
09f92717 | 12560 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12561 | bytes before the stub section can be handled by it too. |
12562 | Don't do this if we have a really large section after the | |
12563 | stubs, as adding more stubs increases the chance that | |
12564 | branches may not reach into the stub section. */ | |
12565 | if (!stubs_always_before_branch && !big_sec) | |
12566 | { | |
12567 | total = 0; | |
12568 | while (prev != NULL | |
12569 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12570 | < (ppc64_elf_section_data (prev) != NULL |
12571 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
12572 | ? (group_size = stub_group_size >> 10) |
12573 | : group_size)) | |
6f20ed8a | 12574 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12575 | { |
12576 | tail = prev; | |
6f20ed8a AM |
12577 | prev = htab->sec_info[tail->id].u.list; |
12578 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12579 | } |
12580 | } | |
12581 | tail = prev; | |
721956f4 AM |
12582 | } |
12583 | } | |
6f20ed8a | 12584 | return TRUE; |
721956f4 AM |
12585 | } |
12586 | ||
58d180e8 AM |
12587 | static const unsigned char glink_eh_frame_cie[] = |
12588 | { | |
12589 | 0, 0, 0, 16, /* length. */ | |
12590 | 0, 0, 0, 0, /* id. */ | |
12591 | 1, /* CIE version. */ | |
12592 | 'z', 'R', 0, /* Augmentation string. */ | |
12593 | 4, /* Code alignment. */ | |
12594 | 0x78, /* Data alignment. */ | |
12595 | 65, /* RA reg. */ | |
12596 | 1, /* Augmentation size. */ | |
12597 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 12598 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
12599 | }; |
12600 | ||
d969d15f AM |
12601 | /* Stripping output sections is normally done before dynamic section |
12602 | symbols have been allocated. This function is called later, and | |
12603 | handles cases like htab->brlt which is mapped to its own output | |
12604 | section. */ | |
12605 | ||
12606 | static void | |
12607 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12608 | { | |
12609 | if (isec->size == 0 | |
12610 | && isec->output_section->size == 0 | |
53d8967a | 12611 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12612 | && !bfd_section_removed_from_list (info->output_bfd, |
12613 | isec->output_section) | |
12614 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12615 | { | |
12616 | isec->output_section->flags |= SEC_EXCLUDE; | |
12617 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12618 | info->output_bfd->section_count--; | |
12619 | } | |
12620 | } | |
12621 | ||
721956f4 AM |
12622 | /* Determine and set the size of the stub section for a final link. |
12623 | ||
12624 | The basic idea here is to examine all the relocations looking for | |
12625 | PC-relative calls to a target that is unreachable with a "bl" | |
12626 | instruction. */ | |
12627 | ||
b34976b6 | 12628 | bfd_boolean |
e7d1c40c | 12629 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12630 | { |
12631 | bfd_size_type stub_group_size; | |
b34976b6 | 12632 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12633 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12634 | ||
4dfe6ac6 NC |
12635 | if (htab == NULL) |
12636 | return FALSE; | |
12637 | ||
0e1862bb | 12638 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12639 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12640 | if (!htab->opd_abi) |
e7d1c40c AM |
12641 | htab->params->plt_thread_safe = 0; |
12642 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12643 | { |
e2458743 | 12644 | static const char *const thread_starter[] = |
794e51c0 AM |
12645 | { |
12646 | "pthread_create", | |
12647 | /* libstdc++ */ | |
12648 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12649 | /* librt */ | |
12650 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12651 | "mq_notify", "create_timer", | |
12652 | /* libanl */ | |
12653 | "getaddrinfo_a", | |
12654 | /* libgomp */ | |
2300b5a1 | 12655 | "GOMP_parallel", |
794e51c0 | 12656 | "GOMP_parallel_start", |
2300b5a1 | 12657 | "GOMP_parallel_loop_static", |
794e51c0 | 12658 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12659 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12660 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12661 | "GOMP_parallel_loop_guided", |
794e51c0 | 12662 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12663 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12664 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12665 | "GOMP_parallel_sections", |
68ffbac6 | 12666 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12667 | /* libgo */ |
12668 | "__go_go", | |
794e51c0 AM |
12669 | }; |
12670 | unsigned i; | |
12671 | ||
a4b6fadd | 12672 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12673 | { |
12674 | struct elf_link_hash_entry *h; | |
12675 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12676 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12677 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12678 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12679 | break; |
12680 | } | |
12681 | } | |
e7d1c40c AM |
12682 | stubs_always_before_branch = htab->params->group_size < 0; |
12683 | if (htab->params->group_size < 0) | |
12684 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12685 | else |
e7d1c40c | 12686 | stub_group_size = htab->params->group_size; |
721956f4 | 12687 | |
6f20ed8a AM |
12688 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12689 | return FALSE; | |
721956f4 | 12690 | |
c9301e31 AM |
12691 | #define STUB_SHRINK_ITER 20 |
12692 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12693 | exit on a stub section shrinking. This is to break out of a | |
12694 | pathological case where adding stubs on one iteration decreases | |
12695 | section gaps (perhaps due to alignment), which then requires | |
12696 | fewer or smaller stubs on the next iteration. */ | |
12697 | ||
721956f4 AM |
12698 | while (1) |
12699 | { | |
12700 | bfd *input_bfd; | |
12701 | unsigned int bfd_indx; | |
a4b6fadd | 12702 | struct map_stub *group; |
721956f4 AM |
12703 | |
12704 | htab->stub_iteration += 1; | |
721956f4 AM |
12705 | |
12706 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12707 | input_bfd != NULL; | |
c72f2fb2 | 12708 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12709 | { |
12710 | Elf_Internal_Shdr *symtab_hdr; | |
12711 | asection *section; | |
6cdc0ccc | 12712 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12713 | |
0c8d6e5c | 12714 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12715 | continue; |
12716 | ||
721956f4 | 12717 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12718 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12719 | if (symtab_hdr->sh_info == 0) |
12720 | continue; | |
12721 | ||
721956f4 AM |
12722 | /* Walk over each section attached to the input bfd. */ |
12723 | for (section = input_bfd->sections; | |
12724 | section != NULL; | |
12725 | section = section->next) | |
12726 | { | |
721956f4 | 12727 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12728 | |
12729 | /* If there aren't any relocs, then there's nothing more | |
12730 | to do. */ | |
12731 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12732 | || (section->flags & SEC_ALLOC) == 0 |
12733 | || (section->flags & SEC_LOAD) == 0 | |
12734 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12735 | || section->reloc_count == 0) |
12736 | continue; | |
12737 | ||
12738 | /* If this section is a link-once section that will be | |
12739 | discarded, then don't create any stubs. */ | |
12740 | if (section->output_section == NULL | |
927be08e | 12741 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12742 | continue; |
12743 | ||
1e2f5b6e AM |
12744 | /* Get the relocs. */ |
12745 | internal_relocs | |
4ce794b7 | 12746 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12747 | info->keep_memory); |
721956f4 | 12748 | if (internal_relocs == NULL) |
1e2f5b6e | 12749 | goto error_ret_free_local; |
721956f4 AM |
12750 | |
12751 | /* Now examine each relocation. */ | |
12752 | irela = internal_relocs; | |
12753 | irelaend = irela + section->reloc_count; | |
12754 | for (; irela < irelaend; irela++) | |
12755 | { | |
4ce794b7 AM |
12756 | enum elf_ppc64_reloc_type r_type; |
12757 | unsigned int r_indx; | |
721956f4 AM |
12758 | enum ppc_stub_type stub_type; |
12759 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12760 | asection *sym_sec, *code_sec; |
e054468f | 12761 | bfd_vma sym_value, code_value; |
721956f4 | 12762 | bfd_vma destination; |
6911b7dc | 12763 | unsigned long local_off; |
8843416a | 12764 | bfd_boolean ok_dest; |
721956f4 | 12765 | struct ppc_link_hash_entry *hash; |
8387904d | 12766 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12767 | struct elf_link_hash_entry *h; |
12768 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12769 | char *stub_name; |
12770 | const asection *id_sec; | |
74f0fb50 | 12771 | struct _opd_sec_data *opd; |
e054468f | 12772 | struct plt_entry *plt_ent; |
721956f4 AM |
12773 | |
12774 | r_type = ELF64_R_TYPE (irela->r_info); | |
12775 | r_indx = ELF64_R_SYM (irela->r_info); | |
12776 | ||
4ce794b7 | 12777 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12778 | { |
12779 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12780 | goto error_ret_free_internal; |
721956f4 AM |
12781 | } |
12782 | ||
12783 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 12784 | if (r_type != R_PPC64_REL24 |
05d0e962 | 12785 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
12786 | && r_type != R_PPC64_REL14 |
12787 | && r_type != R_PPC64_REL14_BRTAKEN | |
12788 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12789 | continue; |
12790 | ||
12791 | /* Now determine the call target, its name, value, | |
12792 | section. */ | |
411e1bfb AM |
12793 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12794 | r_indx, input_bfd)) | |
12795 | goto error_ret_free_internal; | |
12796 | hash = (struct ppc_link_hash_entry *) h; | |
12797 | ||
8843416a | 12798 | ok_dest = FALSE; |
8387904d | 12799 | fdh = NULL; |
7fe2b9a6 | 12800 | sym_value = 0; |
411e1bfb | 12801 | if (hash == NULL) |
721956f4 | 12802 | { |
411e1bfb | 12803 | sym_value = sym->st_value; |
c27b8c2a AM |
12804 | if (sym_sec != NULL |
12805 | && sym_sec->output_section != NULL) | |
12806 | ok_dest = TRUE; | |
721956f4 | 12807 | } |
7fe2b9a6 AM |
12808 | else if (hash->elf.root.type == bfd_link_hash_defined |
12809 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12810 | { | |
12811 | sym_value = hash->elf.root.u.def.value; | |
12812 | if (sym_sec->output_section != NULL) | |
12813 | ok_dest = TRUE; | |
12814 | } | |
12815 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12816 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12817 | { |
99877b66 | 12818 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12819 | use the func descriptor sym instead if it is |
12820 | defined. */ | |
ceb1f1ef | 12821 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12822 | && hash->oh != NULL) |
8387904d | 12823 | { |
8c5b4e52 | 12824 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12825 | if (fdh->elf.root.type == bfd_link_hash_defined |
12826 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12827 | { | |
12828 | sym_sec = fdh->elf.root.u.def.section; | |
12829 | sym_value = fdh->elf.root.u.def.value; | |
12830 | if (sym_sec->output_section != NULL) | |
12831 | ok_dest = TRUE; | |
12832 | } | |
99877b66 AM |
12833 | else |
12834 | fdh = NULL; | |
8387904d | 12835 | } |
7fe2b9a6 AM |
12836 | } |
12837 | else | |
12838 | { | |
12839 | bfd_set_error (bfd_error_bad_value); | |
12840 | goto error_ret_free_internal; | |
721956f4 AM |
12841 | } |
12842 | ||
8843416a | 12843 | destination = 0; |
6911b7dc | 12844 | local_off = 0; |
8843416a AM |
12845 | if (ok_dest) |
12846 | { | |
12847 | sym_value += irela->r_addend; | |
12848 | destination = (sym_value | |
12849 | + sym_sec->output_offset | |
12850 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12851 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12852 | ? hash->elf.other | |
12853 | : sym->st_other); | |
8843416a AM |
12854 | } |
12855 | ||
8387904d | 12856 | code_sec = sym_sec; |
e054468f | 12857 | code_value = sym_value; |
74f0fb50 AM |
12858 | opd = get_opd_info (sym_sec); |
12859 | if (opd != NULL) | |
8387904d AM |
12860 | { |
12861 | bfd_vma dest; | |
12862 | ||
74f0fb50 | 12863 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12864 | { |
51aecdc5 | 12865 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12866 | if (adjust == -1) |
12867 | continue; | |
e054468f | 12868 | code_value += adjust; |
8387904d AM |
12869 | sym_value += adjust; |
12870 | } | |
12871 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12872 | &code_sec, &code_value, FALSE); |
8387904d AM |
12873 | if (dest != (bfd_vma) -1) |
12874 | { | |
12875 | destination = dest; | |
12876 | if (fdh != NULL) | |
12877 | { | |
12878 | /* Fixup old ABI sym to point at code | |
12879 | entry. */ | |
99877b66 | 12880 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12881 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12882 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12883 | } |
12884 | } | |
12885 | } | |
12886 | ||
721956f4 | 12887 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12888 | plt_ent = NULL; |
721956f4 | 12889 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12890 | &plt_ent, destination, |
12891 | local_off); | |
ad8e1ba5 | 12892 | |
05d0e962 AM |
12893 | if (r_type == R_PPC64_REL24_NOTOC) |
12894 | { | |
12895 | if (stub_type == ppc_stub_plt_call) | |
12896 | stub_type = ppc_stub_plt_call_notoc; | |
12897 | else if (stub_type == ppc_stub_long_branch | |
12898 | || (code_sec != NULL | |
12899 | && code_sec->output_section != NULL | |
12900 | && (((hash ? hash->elf.other : sym->st_other) | |
12901 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 12902 | > 1 << STO_PPC64_LOCAL_BIT))) |
05d0e962 AM |
12903 | stub_type = ppc_stub_long_branch_notoc; |
12904 | } | |
12905 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
12906 | { |
12907 | /* Check whether we need a TOC adjusting stub. | |
12908 | Since the linker pastes together pieces from | |
12909 | different object files when creating the | |
12910 | _init and _fini functions, it may be that a | |
12911 | call to what looks like a local sym is in | |
12912 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
12913 | if ((code_sec != NULL |
12914 | && code_sec->output_section != NULL | |
12915 | && (htab->sec_info[code_sec->id].toc_off | |
12916 | != htab->sec_info[section->id].toc_off) | |
12917 | && (code_sec->has_toc_reloc | |
12918 | || code_sec->makes_toc_func_call)) | |
12919 | || (((hash ? hash->elf.other : sym->st_other) | |
12920 | & STO_PPC64_LOCAL_MASK) | |
12921 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
12922 | stub_type = ppc_stub_long_branch_r2off; |
12923 | } | |
12924 | ||
721956f4 AM |
12925 | if (stub_type == ppc_stub_none) |
12926 | continue; | |
12927 | ||
411e1bfb AM |
12928 | /* __tls_get_addr calls might be eliminated. */ |
12929 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 12930 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 12931 | && hash != NULL |
8387904d AM |
12932 | && (hash == htab->tls_get_addr |
12933 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12934 | && section->has_tls_reloc |
12935 | && irela != internal_relocs) | |
12936 | { | |
12937 | /* Get tls info. */ | |
f961d9dd | 12938 | unsigned char *tls_mask; |
411e1bfb | 12939 | |
3a71aa26 | 12940 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12941 | irela - 1, input_bfd)) |
12942 | goto error_ret_free_internal; | |
37da22e5 | 12943 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
12944 | continue; |
12945 | } | |
12946 | ||
f378ab09 | 12947 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 12948 | { |
6e1816be AM |
12949 | if (!htab->opd_abi |
12950 | && htab->params->plt_localentry0 != 0 | |
12951 | && is_elfv2_localentry0 (&hash->elf)) | |
12952 | htab->has_plt_localentry0 = 1; | |
12953 | else if (irela + 1 < irelaend | |
12954 | && irela[1].r_offset == irela->r_offset + 4 | |
12955 | && (ELF64_R_TYPE (irela[1].r_info) | |
12956 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
12957 | { |
12958 | if (!tocsave_find (htab, INSERT, | |
12959 | &local_syms, irela + 1, input_bfd)) | |
12960 | goto error_ret_free_internal; | |
12961 | } | |
f378ab09 AM |
12962 | else |
12963 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 12964 | } |
3b421ab3 | 12965 | |
721956f4 | 12966 | /* Support for grouping stub sections. */ |
6f20ed8a | 12967 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12968 | |
12969 | /* Get the name of this stub. */ | |
12970 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12971 | if (!stub_name) | |
12972 | goto error_ret_free_internal; | |
12973 | ||
12974 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12975 | stub_name, FALSE, FALSE); |
721956f4 AM |
12976 | if (stub_entry != NULL) |
12977 | { | |
05d0e962 AM |
12978 | enum ppc_stub_type old_type; |
12979 | /* A stub has already been created, but it may | |
12980 | not be the required type. We shouldn't be | |
12981 | transitioning from plt_call to long_branch | |
12982 | stubs or vice versa, but we might be | |
12983 | upgrading from plt_call to plt_call_r2save or | |
12984 | from long_branch to long_branch_r2off. */ | |
721956f4 | 12985 | free (stub_name); |
05d0e962 AM |
12986 | old_type = stub_entry->stub_type; |
12987 | switch (old_type) | |
12988 | { | |
12989 | default: | |
12990 | abort (); | |
12991 | ||
12992 | case ppc_stub_save_res: | |
12993 | continue; | |
12994 | ||
12995 | case ppc_stub_plt_call: | |
12996 | case ppc_stub_plt_call_r2save: | |
12997 | case ppc_stub_plt_call_notoc: | |
12998 | case ppc_stub_plt_call_both: | |
12999 | if (stub_type == ppc_stub_plt_call) | |
13000 | continue; | |
13001 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13002 | { | |
13003 | if (old_type == ppc_stub_plt_call_notoc) | |
13004 | stub_type = ppc_stub_plt_call_both; | |
13005 | } | |
13006 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13007 | { | |
13008 | if (old_type == ppc_stub_plt_call_r2save) | |
13009 | stub_type = ppc_stub_plt_call_both; | |
13010 | } | |
13011 | else | |
13012 | abort (); | |
13013 | break; | |
13014 | ||
13015 | case ppc_stub_plt_branch: | |
13016 | case ppc_stub_plt_branch_r2off: | |
13017 | case ppc_stub_plt_branch_notoc: | |
13018 | case ppc_stub_plt_branch_both: | |
13019 | old_type += (ppc_stub_long_branch | |
13020 | - ppc_stub_plt_branch); | |
13021 | /* Fall through. */ | |
13022 | case ppc_stub_long_branch: | |
13023 | case ppc_stub_long_branch_r2off: | |
13024 | case ppc_stub_long_branch_notoc: | |
13025 | case ppc_stub_long_branch_both: | |
13026 | if (stub_type == ppc_stub_long_branch) | |
13027 | continue; | |
13028 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13029 | { | |
13030 | if (old_type == ppc_stub_long_branch_notoc) | |
13031 | stub_type = ppc_stub_long_branch_both; | |
13032 | } | |
13033 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13034 | { | |
13035 | if (old_type == ppc_stub_long_branch_r2off) | |
13036 | stub_type = ppc_stub_long_branch_both; | |
13037 | } | |
13038 | else | |
13039 | abort (); | |
13040 | break; | |
13041 | } | |
13042 | if (old_type < stub_type) | |
794e51c0 | 13043 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13044 | continue; |
13045 | } | |
13046 | ||
25f53a85 | 13047 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13048 | if (stub_entry == NULL) |
13049 | { | |
13050 | free (stub_name); | |
6cdc0ccc AM |
13051 | error_ret_free_internal: |
13052 | if (elf_section_data (section)->relocs == NULL) | |
13053 | free (internal_relocs); | |
13054 | error_ret_free_local: | |
13055 | if (local_syms != NULL | |
13056 | && (symtab_hdr->contents | |
13057 | != (unsigned char *) local_syms)) | |
13058 | free (local_syms); | |
b34976b6 | 13059 | return FALSE; |
721956f4 AM |
13060 | } |
13061 | ||
ad8e1ba5 | 13062 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13063 | if (stub_type >= ppc_stub_plt_call |
13064 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13065 | { |
05d0e962 AM |
13066 | stub_entry->target_value = sym_value; |
13067 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13068 | } |
13069 | else | |
13070 | { | |
05d0e962 AM |
13071 | stub_entry->target_value = code_value; |
13072 | stub_entry->target_section = code_sec; | |
e054468f | 13073 | } |
721956f4 | 13074 | stub_entry->h = hash; |
e054468f | 13075 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13076 | stub_entry->symtype |
13077 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13078 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 13079 | |
3d58e1fc AM |
13080 | if (hash != NULL |
13081 | && (hash->elf.root.type == bfd_link_hash_defined | |
13082 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 13083 | htab->stub_globals += 1; |
721956f4 AM |
13084 | } |
13085 | ||
13086 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13087 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13088 | free (internal_relocs); |
721956f4 | 13089 | } |
6cdc0ccc AM |
13090 | |
13091 | if (local_syms != NULL | |
13092 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13093 | { | |
13094 | if (!info->keep_memory) | |
13095 | free (local_syms); | |
13096 | else | |
13097 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13098 | } | |
721956f4 AM |
13099 | } |
13100 | ||
5c3dead3 | 13101 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13102 | stub sections. */ |
d4aaa2a0 | 13103 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13104 | { |
13105 | group->lr_restore = 0; | |
13106 | group->eh_size = 0; | |
13107 | if (group->stub_sec != NULL) | |
13108 | { | |
13109 | asection *stub_sec = group->stub_sec; | |
13110 | ||
13111 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13112 | || stub_sec->rawsize < stub_sec->size) | |
13113 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13114 | stub_sec->rawsize = stub_sec->size; | |
13115 | stub_sec->size = 0; | |
13116 | stub_sec->reloc_count = 0; | |
13117 | stub_sec->flags &= ~SEC_RELOC; | |
13118 | } | |
13119 | } | |
eea6121a | 13120 | |
ba21f564 AM |
13121 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13122 | || htab->brlt->rawsize < htab->brlt->size) | |
13123 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13124 | htab->brlt->size = 0; |
84f5d08e AM |
13125 | htab->brlt->reloc_count = 0; |
13126 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13127 | if (htab->relbrlt != NULL) |
eea6121a | 13128 | htab->relbrlt->size = 0; |
721956f4 | 13129 | |
63bc6f6c | 13130 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13131 | |
a4b6fadd AM |
13132 | for (group = htab->group; group != NULL; group = group->next) |
13133 | if (group->needs_save_res) | |
13134 | group->stub_sec->size += htab->sfpr->size; | |
13135 | ||
176a0d42 AM |
13136 | if (info->emitrelocations |
13137 | && htab->glink != NULL && htab->glink->size != 0) | |
13138 | { | |
13139 | htab->glink->reloc_count = 1; | |
13140 | htab->glink->flags |= SEC_RELOC; | |
13141 | } | |
13142 | ||
58d180e8 AM |
13143 | if (htab->glink_eh_frame != NULL |
13144 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13145 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13146 | { |
2e0ce1c8 | 13147 | size_t size = 0, align = 4; |
58d180e8 | 13148 | |
d4aaa2a0 | 13149 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13150 | if (group->eh_size != 0) |
13151 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13152 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13153 | size += (24 + align - 1) & -align; |
58d180e8 | 13154 | if (size != 0) |
2e0ce1c8 AM |
13155 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13156 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13157 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13158 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13159 | htab->glink_eh_frame->size = size; | |
13160 | } | |
13161 | ||
e7d1c40c | 13162 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13163 | for (group = htab->group; group != NULL; group = group->next) |
13164 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13165 | { |
13166 | int align = abs (htab->params->plt_stub_align); | |
13167 | group->stub_sec->size | |
13168 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13169 | } | |
d4aaa2a0 AM |
13170 | |
13171 | for (group = htab->group; group != NULL; group = group->next) | |
13172 | if (group->stub_sec != NULL | |
13173 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13174 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13175 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13176 | break; |
13177 | ||
d4aaa2a0 | 13178 | if (group == NULL |
ba21f564 AM |
13179 | && (htab->brlt->rawsize == htab->brlt->size |
13180 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13181 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
13182 | && (htab->glink_eh_frame == NULL |
13183 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
13184 | break; |
13185 | ||
721956f4 | 13186 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13187 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13188 | } |
13189 | ||
da44f4e5 AM |
13190 | if (htab->glink_eh_frame != NULL |
13191 | && htab->glink_eh_frame->size != 0) | |
13192 | { | |
13193 | bfd_vma val; | |
13194 | bfd_byte *p, *last_fde; | |
13195 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13196 | struct map_stub *group; |
da44f4e5 | 13197 | |
df136d64 AM |
13198 | /* It is necessary to at least have a rough outline of the |
13199 | linker generated CIEs and FDEs written before | |
13200 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13201 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13202 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13203 | if (p == NULL) | |
13204 | return FALSE; | |
13205 | htab->glink_eh_frame->contents = p; | |
13206 | last_fde = p; | |
2e0ce1c8 | 13207 | align = 4; |
da44f4e5 AM |
13208 | |
13209 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13210 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13211 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13212 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13213 | p += last_fde_len + 4; |
da44f4e5 | 13214 | |
d4aaa2a0 | 13215 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13216 | if (group->eh_size != 0) |
da44f4e5 | 13217 | { |
df136d64 | 13218 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13219 | last_fde = p; |
df136d64 | 13220 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13221 | /* FDE length. */ |
2e0ce1c8 | 13222 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13223 | p += 4; |
13224 | /* CIE pointer. */ | |
13225 | val = p - htab->glink_eh_frame->contents; | |
13226 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13227 | p += 4; | |
13228 | /* Offset to stub section, written later. */ | |
13229 | p += 4; | |
13230 | /* stub section size. */ | |
d4aaa2a0 | 13231 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13232 | p += 4; |
13233 | /* Augmentation. */ | |
13234 | p += 1; | |
df136d64 AM |
13235 | /* Make sure we don't have all nops. This is enough for |
13236 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13237 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13238 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13239 | } |
13240 | if (htab->glink != NULL && htab->glink->size != 0) | |
13241 | { | |
13242 | last_fde = p; | |
2e0ce1c8 | 13243 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13244 | /* FDE length. */ |
2e0ce1c8 | 13245 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13246 | p += 4; |
13247 | /* CIE pointer. */ | |
13248 | val = p - htab->glink_eh_frame->contents; | |
13249 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13250 | p += 4; | |
13251 | /* Offset to .glink, written later. */ | |
13252 | p += 4; | |
13253 | /* .glink size. */ | |
13254 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13255 | p += 4; | |
13256 | /* Augmentation. */ | |
13257 | p += 1; | |
13258 | ||
13259 | *p++ = DW_CFA_advance_loc + 1; | |
13260 | *p++ = DW_CFA_register; | |
13261 | *p++ = 65; | |
9f08fa5c | 13262 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13263 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13264 | *p++ = DW_CFA_restore_extended; |
13265 | *p++ = 65; | |
2e0ce1c8 | 13266 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13267 | } |
13268 | /* Subsume any padding into the last FDE if user .eh_frame | |
13269 | sections are aligned more than glink_eh_frame. Otherwise any | |
13270 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13271 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13272 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13273 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13274 | htab->glink_eh_frame->size = size + pad; |
13275 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13276 | } | |
13277 | ||
d969d15f AM |
13278 | maybe_strip_output (info, htab->brlt); |
13279 | if (htab->glink_eh_frame != NULL) | |
13280 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13281 | |
b34976b6 | 13282 | return TRUE; |
721956f4 AM |
13283 | } |
13284 | ||
13285 | /* Called after we have determined section placement. If sections | |
805fc799 | 13286 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13287 | |
805fc799 | 13288 | bfd_vma |
1c865ab2 | 13289 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13290 | { |
805fc799 | 13291 | asection *s; |
a27e685f | 13292 | bfd_vma TOCstart, adjust; |
721956f4 | 13293 | |
43417696 AM |
13294 | if (info != NULL) |
13295 | { | |
13296 | struct elf_link_hash_entry *h; | |
13297 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13298 | ||
13299 | if (is_elf_hash_table (htab) | |
13300 | && htab->hgot != NULL) | |
13301 | h = htab->hgot; | |
13302 | else | |
13303 | { | |
13304 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13305 | if (is_elf_hash_table (htab)) | |
13306 | htab->hgot = h; | |
13307 | } | |
13308 | if (h != NULL | |
13309 | && h->root.type == bfd_link_hash_defined | |
13310 | && !h->root.linker_def | |
13311 | && (!is_elf_hash_table (htab) | |
13312 | || h->def_regular)) | |
13313 | { | |
13314 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
13315 | + h->root.u.def.section->output_offset | |
13316 | + h->root.u.def.section->output_section->vma); | |
13317 | _bfd_set_gp_value (obfd, TOCstart); | |
13318 | return TOCstart; | |
13319 | } | |
13320 | } | |
13321 | ||
805fc799 AM |
13322 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13323 | order. The TOC starts where the first of these sections starts. */ | |
13324 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13325 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13326 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13327 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13328 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13329 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13330 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13331 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13332 | { |
13333 | /* This may happen for | |
13334 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13335 | .toc directive | |
13336 | o bad linker script | |
13337 | o --gc-sections and empty TOC sections | |
13338 | ||
13339 | FIXME: Warn user? */ | |
13340 | ||
13341 | /* Look for a likely section. We probably won't even be | |
13342 | using TOCstart. */ | |
13343 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13344 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13345 | | SEC_EXCLUDE)) | |
805fc799 AM |
13346 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13347 | break; | |
721956f4 | 13348 | if (s == NULL) |
805fc799 | 13349 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13350 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13351 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13352 | break; | |
721956f4 | 13353 | if (s == NULL) |
805fc799 | 13354 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13355 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13356 | == SEC_ALLOC) | |
805fc799 | 13357 | break; |
721956f4 | 13358 | if (s == NULL) |
805fc799 | 13359 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13360 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13361 | break; |
13362 | } | |
721956f4 | 13363 | |
805fc799 AM |
13364 | TOCstart = 0; |
13365 | if (s != NULL) | |
13366 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13367 | |
a27e685f AM |
13368 | /* Force alignment. */ |
13369 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13370 | TOCstart -= adjust; | |
1c865ab2 AM |
13371 | _bfd_set_gp_value (obfd, TOCstart); |
13372 | ||
810d4e75 | 13373 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13374 | { |
13375 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13376 | ||
810d4e75 AM |
13377 | if (htab != NULL) |
13378 | { | |
13379 | if (htab->elf.hgot != NULL) | |
13380 | { | |
a27e685f | 13381 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13382 | htab->elf.hgot->root.u.def.section = s; |
13383 | } | |
13384 | } | |
13385 | else | |
1c865ab2 | 13386 | { |
810d4e75 AM |
13387 | struct bfd_link_hash_entry *bh = NULL; |
13388 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13389 | s, TOC_BASE_OFF - adjust, |
13390 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13391 | } |
13392 | } | |
805fc799 | 13393 | return TOCstart; |
721956f4 AM |
13394 | } |
13395 | ||
a345bc8d | 13396 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13397 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13398 | |
13399 | static bfd_boolean | |
49c09209 | 13400 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13401 | { |
13402 | struct bfd_link_info *info; | |
13403 | struct ppc_link_hash_table *htab; | |
49c09209 | 13404 | struct plt_entry *ent; |
a345bc8d AM |
13405 | asection *s; |
13406 | ||
13407 | if (h->root.type == bfd_link_hash_indirect) | |
13408 | return TRUE; | |
13409 | ||
49c09209 AM |
13410 | info = inf; |
13411 | htab = ppc_hash_table (info); | |
13412 | if (htab == NULL) | |
13413 | return FALSE; | |
13414 | ||
13415 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13416 | if (ent->plt.offset != (bfd_vma) -1) | |
13417 | { | |
13418 | /* This symbol has an entry in the procedure linkage | |
13419 | table. Set it up. */ | |
13420 | Elf_Internal_Rela rela; | |
2d7ad24e | 13421 | asection *plt, *relplt; |
49c09209 AM |
13422 | bfd_byte *loc; |
13423 | ||
13424 | if (!htab->elf.dynamic_sections_created | |
13425 | || h->dynindx == -1) | |
13426 | { | |
13427 | if (!(h->def_regular | |
13428 | && (h->root.type == bfd_link_hash_defined | |
13429 | || h->root.type == bfd_link_hash_defweak))) | |
13430 | continue; | |
2d7ad24e AM |
13431 | if (h->type == STT_GNU_IFUNC) |
13432 | { | |
13433 | plt = htab->elf.iplt; | |
13434 | relplt = htab->elf.irelplt; | |
13435 | htab->local_ifunc_resolver = 1; | |
13436 | if (htab->opd_abi) | |
13437 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13438 | else | |
13439 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13440 | } | |
49c09209 | 13441 | else |
2d7ad24e AM |
13442 | { |
13443 | plt = htab->pltlocal; | |
13444 | if (bfd_link_pic (info)) | |
13445 | { | |
13446 | relplt = htab->relpltlocal; | |
13447 | if (htab->opd_abi) | |
13448 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13449 | else | |
13450 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13451 | } | |
13452 | else | |
13453 | relplt = NULL; | |
13454 | } | |
49c09209 AM |
13455 | rela.r_addend = (h->root.u.def.value |
13456 | + h->root.u.def.section->output_offset | |
13457 | + h->root.u.def.section->output_section->vma | |
13458 | + ent->addend); | |
2d7ad24e AM |
13459 | |
13460 | if (relplt == NULL) | |
13461 | { | |
13462 | loc = plt->contents + ent->plt.offset; | |
13463 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13464 | if (htab->opd_abi) | |
13465 | { | |
13466 | bfd_vma toc = elf_gp (info->output_bfd); | |
13467 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13468 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13469 | } | |
13470 | } | |
13471 | else | |
13472 | { | |
13473 | rela.r_offset = (plt->output_section->vma | |
13474 | + plt->output_offset | |
13475 | + ent->plt.offset); | |
13476 | loc = relplt->contents + (relplt->reloc_count++ | |
13477 | * sizeof (Elf64_External_Rela)); | |
13478 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13479 | } | |
49c09209 AM |
13480 | } |
13481 | else | |
13482 | { | |
13483 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13484 | + htab->elf.splt->output_offset | |
13485 | + ent->plt.offset); | |
13486 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13487 | rela.r_addend = ent->addend; | |
13488 | loc = (htab->elf.srelplt->contents | |
13489 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13490 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13491 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13492 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13493 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13494 | } |
49c09209 AM |
13495 | } |
13496 | ||
a345bc8d AM |
13497 | if (!h->pointer_equality_needed) |
13498 | return TRUE; | |
13499 | ||
13500 | if (h->def_regular) | |
13501 | return TRUE; | |
13502 | ||
9e390558 | 13503 | s = htab->global_entry; |
49c09209 AM |
13504 | if (s == NULL || s->size == 0) |
13505 | return TRUE; | |
13506 | ||
13507 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13508 | if (ent->plt.offset != (bfd_vma) -1 | |
13509 | && ent->addend == 0) | |
a345bc8d AM |
13510 | { |
13511 | bfd_byte *p; | |
13512 | asection *plt; | |
13513 | bfd_vma off; | |
13514 | ||
a345bc8d | 13515 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13516 | plt = htab->elf.splt; |
a345bc8d AM |
13517 | if (!htab->elf.dynamic_sections_created |
13518 | || h->dynindx == -1) | |
2d7ad24e AM |
13519 | { |
13520 | if (h->type == STT_GNU_IFUNC) | |
13521 | plt = htab->elf.iplt; | |
13522 | else | |
13523 | plt = htab->pltlocal; | |
13524 | } | |
49c09209 | 13525 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13526 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13527 | ||
13528 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13529 | { | |
13530 | info->callbacks->einfo | |
c1c8c1ef | 13531 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13532 | h->root.root.string); |
13533 | bfd_set_error (bfd_error_bad_value); | |
13534 | htab->stub_error = TRUE; | |
13535 | } | |
13536 | ||
7341d5e2 AM |
13537 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13538 | if (htab->params->emit_stub_syms) | |
13539 | { | |
13540 | size_t len = strlen (h->root.root.string); | |
13541 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13542 | ||
13543 | if (name == NULL) | |
13544 | return FALSE; | |
13545 | ||
13546 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13547 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13548 | if (h == NULL) | |
13549 | return FALSE; | |
13550 | if (h->root.type == bfd_link_hash_new) | |
13551 | { | |
13552 | h->root.type = bfd_link_hash_defined; | |
13553 | h->root.u.def.section = s; | |
13554 | h->root.u.def.value = p - s->contents; | |
13555 | h->ref_regular = 1; | |
13556 | h->def_regular = 1; | |
13557 | h->ref_regular_nonweak = 1; | |
13558 | h->forced_local = 1; | |
13559 | h->non_elf = 0; | |
2ec55de3 | 13560 | h->root.linker_def = 1; |
7341d5e2 AM |
13561 | } |
13562 | } | |
13563 | ||
a345bc8d AM |
13564 | if (PPC_HA (off) != 0) |
13565 | { | |
13566 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13567 | p += 4; | |
13568 | } | |
13569 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13570 | p += 4; | |
13571 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13572 | p += 4; | |
407aa07c | 13573 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
13574 | break; |
13575 | } | |
13576 | return TRUE; | |
13577 | } | |
13578 | ||
49c09209 AM |
13579 | /* Write PLT relocs for locals. */ |
13580 | ||
13581 | static bfd_boolean | |
13582 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
13583 | { | |
13584 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13585 | bfd *ibfd; | |
13586 | ||
13587 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
13588 | { | |
13589 | struct got_entry **lgot_ents, **end_lgot_ents; | |
13590 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
13591 | Elf_Internal_Shdr *symtab_hdr; | |
13592 | bfd_size_type locsymcount; | |
13593 | Elf_Internal_Sym *local_syms = NULL; | |
13594 | struct plt_entry *ent; | |
13595 | ||
13596 | if (!is_ppc64_elf (ibfd)) | |
13597 | continue; | |
13598 | ||
13599 | lgot_ents = elf_local_got_ents (ibfd); | |
13600 | if (!lgot_ents) | |
13601 | continue; | |
13602 | ||
13603 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
13604 | locsymcount = symtab_hdr->sh_info; | |
13605 | end_lgot_ents = lgot_ents + locsymcount; | |
13606 | local_plt = (struct plt_entry **) end_lgot_ents; | |
13607 | end_local_plt = local_plt + locsymcount; | |
13608 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
13609 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
13610 | if (ent->plt.offset != (bfd_vma) -1) | |
13611 | { | |
13612 | Elf_Internal_Sym *sym; | |
13613 | asection *sym_sec; | |
13614 | asection *plt, *relplt; | |
13615 | bfd_byte *loc; | |
13616 | bfd_vma val; | |
49c09209 AM |
13617 | |
13618 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
13619 | lplt - local_plt, ibfd)) | |
13620 | { | |
13621 | if (local_syms != NULL | |
13622 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13623 | free (local_syms); | |
13624 | return FALSE; | |
13625 | } | |
13626 | ||
13627 | val = sym->st_value + ent->addend; | |
ba85c15d AM |
13628 | if (ELF_ST_TYPE (sym->st_info) != STT_GNU_IFUNC) |
13629 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
49c09209 AM |
13630 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
13631 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
13632 | ||
2d7ad24e AM |
13633 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
13634 | { | |
13635 | htab->local_ifunc_resolver = 1; | |
13636 | plt = htab->elf.iplt; | |
13637 | relplt = htab->elf.irelplt; | |
13638 | } | |
13639 | else | |
13640 | { | |
13641 | plt = htab->pltlocal; | |
13642 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
13643 | } | |
49c09209 | 13644 | |
2d7ad24e AM |
13645 | if (relplt == NULL) |
13646 | { | |
13647 | loc = plt->contents + ent->plt.offset; | |
13648 | bfd_put_64 (info->output_bfd, val, loc); | |
13649 | if (htab->opd_abi) | |
13650 | { | |
13651 | bfd_vma toc = elf_gp (ibfd); | |
13652 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13653 | } | |
13654 | } | |
49c09209 | 13655 | else |
2d7ad24e AM |
13656 | { |
13657 | Elf_Internal_Rela rela; | |
13658 | rela.r_offset = (ent->plt.offset | |
13659 | + plt->output_offset | |
13660 | + plt->output_section->vma); | |
13661 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13662 | { | |
13663 | if (htab->opd_abi) | |
13664 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13665 | else | |
13666 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13667 | } | |
13668 | else | |
13669 | { | |
13670 | if (htab->opd_abi) | |
13671 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13672 | else | |
13673 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13674 | } | |
13675 | rela.r_addend = val; | |
13676 | loc = relplt->contents + (relplt->reloc_count++ | |
13677 | * sizeof (Elf64_External_Rela)); | |
13678 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13679 | } | |
49c09209 AM |
13680 | } |
13681 | ||
13682 | if (local_syms != NULL | |
13683 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13684 | { | |
13685 | if (!info->keep_memory) | |
13686 | free (local_syms); | |
13687 | else | |
13688 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13689 | } | |
13690 | } | |
13691 | return TRUE; | |
13692 | } | |
13693 | ||
721956f4 AM |
13694 | /* Build all the stubs associated with the current output file. |
13695 | The stubs are kept in a hash table attached to the main linker | |
13696 | hash table. This function is called via gldelf64ppc_finish. */ | |
13697 | ||
b34976b6 | 13698 | bfd_boolean |
e7d1c40c | 13699 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 13700 | char **stats) |
5d1634d7 AM |
13701 | { |
13702 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 13703 | struct map_stub *group; |
721956f4 | 13704 | asection *stub_sec; |
5d1634d7 | 13705 | bfd_byte *p; |
e717da7e | 13706 | int stub_sec_count = 0; |
5d1634d7 | 13707 | |
4dfe6ac6 NC |
13708 | if (htab == NULL) |
13709 | return FALSE; | |
13710 | ||
eea6121a | 13711 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 13712 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13713 | { |
13714 | group->eh_size = 0; | |
13715 | group->lr_restore = 0; | |
13716 | if ((stub_sec = group->stub_sec) != NULL | |
13717 | && stub_sec->size != 0) | |
13718 | { | |
13719 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
13720 | stub_sec->size); | |
13721 | if (stub_sec->contents == NULL) | |
13722 | return FALSE; | |
13723 | stub_sec->size = 0; | |
13724 | } | |
13725 | } | |
5d1634d7 | 13726 | |
23eb7e01 | 13727 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13728 | { |
9f951329 | 13729 | unsigned int indx; |
ad8e1ba5 | 13730 | bfd_vma plt0; |
9f951329 | 13731 | |
721956f4 | 13732 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13733 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13734 | { |
13735 | struct elf_link_hash_entry *h; | |
468392fb AM |
13736 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13737 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13738 | if (h == NULL) |
13739 | return FALSE; | |
13740 | if (h->root.type == bfd_link_hash_new) | |
13741 | { | |
13742 | h->root.type = bfd_link_hash_defined; | |
13743 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13744 | h->root.u.def.value = 8; |
f5385ebf AM |
13745 | h->ref_regular = 1; |
13746 | h->def_regular = 1; | |
13747 | h->ref_regular_nonweak = 1; | |
13748 | h->forced_local = 1; | |
13749 | h->non_elf = 0; | |
2ec55de3 | 13750 | h->root.linker_def = 1; |
97b639ba AM |
13751 | } |
13752 | } | |
33e44f2e AM |
13753 | plt0 = (htab->elf.splt->output_section->vma |
13754 | + htab->elf.splt->output_offset | |
13755 | - 16); | |
176a0d42 AM |
13756 | if (info->emitrelocations) |
13757 | { | |
13758 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13759 | if (r == NULL) | |
13760 | return FALSE; | |
13761 | r->r_offset = (htab->glink->output_offset | |
13762 | + htab->glink->output_section->vma); | |
13763 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13764 | r->r_addend = plt0; | |
13765 | } | |
4ce794b7 | 13766 | p = htab->glink->contents; |
176a0d42 | 13767 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13768 | bfd_put_64 (htab->glink->owner, plt0, p); |
13769 | p += 8; | |
b9e5796b AM |
13770 | if (htab->opd_abi) |
13771 | { | |
13772 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13773 | p += 4; | |
13774 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13775 | p += 4; | |
13776 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13777 | p += 4; | |
13778 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13779 | p += 4; | |
13780 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13781 | p += 4; | |
13782 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13783 | p += 4; | |
13784 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13785 | p += 4; | |
13786 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13787 | p += 4; | |
13788 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13789 | p += 4; | |
13790 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13791 | p += 4; | |
13792 | } | |
13793 | else | |
13794 | { | |
13795 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13796 | p += 4; | |
13797 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13798 | p += 4; | |
13799 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13800 | p += 4; | |
f378ab09 AM |
13801 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13802 | p += 4; | |
b9e5796b AM |
13803 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13804 | p += 4; | |
13805 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13806 | p += 4; | |
13807 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13808 | p += 4; | |
13809 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13810 | p += 4; | |
13811 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13812 | p += 4; | |
13813 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13814 | p += 4; | |
13815 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13816 | p += 4; | |
13817 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13818 | p += 4; | |
13819 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13820 | p += 4; | |
13821 | } | |
407aa07c AM |
13822 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13823 | p += 4; | |
c75bc4f7 | 13824 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13825 | |
9f951329 AM |
13826 | /* Build the .glink lazy link call stubs. */ |
13827 | indx = 0; | |
9e390558 | 13828 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13829 | { |
b9e5796b | 13830 | if (htab->opd_abi) |
9f951329 | 13831 | { |
b9e5796b AM |
13832 | if (indx < 0x8000) |
13833 | { | |
13834 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13835 | p += 4; | |
13836 | } | |
13837 | else | |
13838 | { | |
13839 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13840 | p += 4; | |
13841 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13842 | p); | |
13843 | p += 4; | |
13844 | } | |
9f951329 | 13845 | } |
4ce794b7 | 13846 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13847 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13848 | indx++; |
9f951329 AM |
13849 | p += 4; |
13850 | } | |
5d1634d7 | 13851 | } |
5d1634d7 | 13852 | |
49c09209 AM |
13853 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
13854 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
13855 | ||
13856 | if (!write_plt_relocs_for_local_syms (info)) | |
13857 | return FALSE; | |
9e390558 | 13858 | |
7341d5e2 | 13859 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13860 | { |
4ce794b7 | 13861 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13862 | htab->brlt->size); |
4ce794b7 | 13863 | if (htab->brlt->contents == NULL) |
b34976b6 | 13864 | return FALSE; |
721956f4 | 13865 | } |
ee75fd95 | 13866 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13867 | { |
13868 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13869 | htab->relbrlt->size); |
63bc6f6c AM |
13870 | if (htab->relbrlt->contents == NULL) |
13871 | return FALSE; | |
13872 | } | |
5d1634d7 | 13873 | |
721956f4 AM |
13874 | /* Build the stubs as directed by the stub hash table. */ |
13875 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13876 | |
a4b6fadd AM |
13877 | for (group = htab->group; group != NULL; group = group->next) |
13878 | if (group->needs_save_res) | |
7dda8d3c | 13879 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 13880 | |
aa8a7074 AM |
13881 | if (htab->relbrlt != NULL) |
13882 | htab->relbrlt->reloc_count = 0; | |
13883 | ||
e7d1c40c | 13884 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13885 | for (group = htab->group; group != NULL; group = group->next) |
13886 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
13887 | { |
13888 | int align = abs (htab->params->plt_stub_align); | |
13889 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13890 | } | |
794e51c0 | 13891 | |
7dda8d3c AM |
13892 | for (group = htab->group; group != NULL; group = group->next) |
13893 | if (group->needs_save_res) | |
13894 | { | |
13895 | stub_sec = group->stub_sec; | |
13896 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
13897 | htab->sfpr->contents, htab->sfpr->size); | |
13898 | if (htab->params->emit_stub_syms) | |
13899 | { | |
13900 | unsigned int i; | |
13901 | ||
13902 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13903 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13904 | return FALSE; | |
13905 | } | |
13906 | } | |
13907 | ||
df136d64 AM |
13908 | if (htab->glink_eh_frame != NULL |
13909 | && htab->glink_eh_frame->size != 0) | |
13910 | { | |
13911 | bfd_vma val; | |
13912 | size_t align = 4; | |
13913 | ||
13914 | p = htab->glink_eh_frame->contents; | |
13915 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
13916 | ||
13917 | for (group = htab->group; group != NULL; group = group->next) | |
13918 | if (group->eh_size != 0) | |
13919 | { | |
13920 | /* Offset to stub section. */ | |
13921 | val = (group->stub_sec->output_section->vma | |
13922 | + group->stub_sec->output_offset); | |
13923 | val -= (htab->glink_eh_frame->output_section->vma | |
13924 | + htab->glink_eh_frame->output_offset | |
13925 | + (p + 8 - htab->glink_eh_frame->contents)); | |
13926 | if (val + 0x80000000 > 0xffffffff) | |
13927 | { | |
13928 | _bfd_error_handler | |
13929 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
13930 | group->stub_sec->name); | |
13931 | return FALSE; | |
13932 | } | |
13933 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
13934 | p += (group->eh_size + 17 + 3) & -4; | |
13935 | } | |
13936 | if (htab->glink != NULL && htab->glink->size != 0) | |
13937 | { | |
13938 | /* Offset to .glink. */ | |
13939 | val = (htab->glink->output_section->vma | |
13940 | + htab->glink->output_offset | |
13941 | + 8); | |
13942 | val -= (htab->glink_eh_frame->output_section->vma | |
13943 | + htab->glink_eh_frame->output_offset | |
13944 | + (p + 8 - htab->glink_eh_frame->contents)); | |
13945 | if (val + 0x80000000 > 0xffffffff) | |
13946 | { | |
13947 | _bfd_error_handler | |
13948 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
13949 | htab->glink->name); | |
13950 | return FALSE; | |
13951 | } | |
13952 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
13953 | p += (24 + align - 1) & -align; | |
13954 | } | |
13955 | } | |
13956 | ||
d4aaa2a0 AM |
13957 | for (group = htab->group; group != NULL; group = group->next) |
13958 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
13959 | { |
13960 | stub_sec_count += 1; | |
c9301e31 AM |
13961 | if (stub_sec->rawsize != stub_sec->size |
13962 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13963 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13964 | break; |
13965 | } | |
5d1634d7 | 13966 | |
25516cc5 | 13967 | if (group != NULL) |
5d1634d7 | 13968 | { |
b34976b6 | 13969 | htab->stub_error = TRUE; |
cf97bcb0 | 13970 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 13971 | } |
721956f4 | 13972 | |
d2a300cf AM |
13973 | if (htab->stub_error) |
13974 | return FALSE; | |
13975 | ||
13976 | if (stats != NULL) | |
13977 | { | |
db84fff3 | 13978 | size_t len; |
d2a300cf AM |
13979 | *stats = bfd_malloc (500); |
13980 | if (*stats == NULL) | |
13981 | return FALSE; | |
13982 | ||
db84fff3 AM |
13983 | len = sprintf (*stats, |
13984 | ngettext ("linker stubs in %u group\n", | |
13985 | "linker stubs in %u groups\n", | |
13986 | stub_sec_count), | |
13987 | stub_sec_count); | |
05d0e962 AM |
13988 | sprintf (*stats + len, _(" branch %lu\n" |
13989 | " branch toc adj %lu\n" | |
13990 | " branch notoc %lu\n" | |
13991 | " branch both %lu\n" | |
13992 | " long branch %lu\n" | |
13993 | " long toc adj %lu\n" | |
13994 | " long notoc %lu\n" | |
13995 | " long both %lu\n" | |
13996 | " plt call %lu\n" | |
13997 | " plt call save %lu\n" | |
13998 | " plt call notoc %lu\n" | |
13999 | " plt call both %lu\n" | |
14000 | " global entry %lu"), | |
4ce794b7 AM |
14001 | htab->stub_count[ppc_stub_long_branch - 1], |
14002 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
05d0e962 AM |
14003 | htab->stub_count[ppc_stub_long_branch_notoc - 1], |
14004 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
4ce794b7 AM |
14005 | htab->stub_count[ppc_stub_plt_branch - 1], |
14006 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
05d0e962 AM |
14007 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], |
14008 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
794e51c0 | 14009 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 | 14010 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
05d0e962 AM |
14011 | htab->stub_count[ppc_stub_plt_call_notoc - 1], |
14012 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
7341d5e2 | 14013 | htab->stub_count[ppc_stub_global_entry - 1]); |
d2a300cf AM |
14014 | } |
14015 | return TRUE; | |
5bd4f169 AM |
14016 | } |
14017 | ||
60124e18 AM |
14018 | /* What to do when ld finds relocations against symbols defined in |
14019 | discarded sections. */ | |
14020 | ||
14021 | static unsigned int | |
14022 | ppc64_elf_action_discarded (asection *sec) | |
14023 | { | |
14024 | if (strcmp (".opd", sec->name) == 0) | |
14025 | return 0; | |
14026 | ||
14027 | if (strcmp (".toc", sec->name) == 0) | |
14028 | return 0; | |
14029 | ||
bce50a28 JJ |
14030 | if (strcmp (".toc1", sec->name) == 0) |
14031 | return 0; | |
14032 | ||
60124e18 AM |
14033 | return _bfd_elf_default_action_discarded (sec); |
14034 | } | |
14035 | ||
5bd4f169 AM |
14036 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14037 | to handle the relocations for a section. | |
14038 | ||
14039 | The relocs are always passed as Rela structures; if the section | |
14040 | actually uses Rel structures, the r_addend field will always be | |
14041 | zero. | |
14042 | ||
14043 | This function is responsible for adjust the section contents as | |
14044 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14045 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14046 | necessary. |
14047 | ||
14048 | This function does not have to worry about setting the reloc | |
14049 | address or the reloc symbol index. | |
14050 | ||
14051 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14052 | ||
14053 | LOCAL_SECTIONS is an array giving the section in the input file | |
14054 | corresponding to the st_shndx field of each local symbol. | |
14055 | ||
14056 | The global hash table entry for the global symbols can be found | |
14057 | via elf_sym_hashes (input_bfd). | |
14058 | ||
1049f94e | 14059 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14060 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14061 | going to be the section symbol corresponding to the output | |
14062 | section, which means that the addend must be adjusted | |
14063 | accordingly. */ | |
14064 | ||
b34976b6 | 14065 | static bfd_boolean |
4ce794b7 AM |
14066 | ppc64_elf_relocate_section (bfd *output_bfd, |
14067 | struct bfd_link_info *info, | |
14068 | bfd *input_bfd, | |
14069 | asection *input_section, | |
14070 | bfd_byte *contents, | |
14071 | Elf_Internal_Rela *relocs, | |
14072 | Elf_Internal_Sym *local_syms, | |
14073 | asection **local_sections) | |
5bd4f169 | 14074 | { |
65f38f15 | 14075 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14076 | Elf_Internal_Shdr *symtab_hdr; |
14077 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14078 | Elf_Internal_Rela *rel; |
c316a17c | 14079 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14080 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14081 | Elf_Internal_Rela outrel; |
14082 | bfd_byte *loc; | |
411e1bfb | 14083 | struct got_entry **local_got_ents; |
5bd4f169 | 14084 | bfd_vma TOCstart; |
b34976b6 AM |
14085 | bfd_boolean ret = TRUE; |
14086 | bfd_boolean is_opd; | |
794e51c0 AM |
14087 | /* Assume 'at' branch hints. */ |
14088 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 14089 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14090 | |
65f38f15 | 14091 | /* Initialize howto table if needed. */ |
5bd4f169 | 14092 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14093 | ppc_howto_init (); |
14094 | ||
65f38f15 | 14095 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14096 | if (htab == NULL) |
14097 | return FALSE; | |
ee75fd95 AM |
14098 | |
14099 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14100 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
14101 | return TRUE; |
14102 | ||
7af5d5c4 AM |
14103 | if (!is_ppc64_elf (input_bfd)) |
14104 | { | |
14105 | bfd_set_error (bfd_error_wrong_format); | |
14106 | return FALSE; | |
14107 | } | |
0ffa91dd | 14108 | |
411e1bfb | 14109 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14110 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14111 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14112 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14113 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14114 | |
c316a17c | 14115 | rel = wrel = relocs; |
5bd4f169 | 14116 | relend = relocs + input_section->reloc_count; |
c316a17c | 14117 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14118 | { |
04c9666a | 14119 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14120 | bfd_vma addend; |
5bd4f169 AM |
14121 | bfd_reloc_status_type r; |
14122 | Elf_Internal_Sym *sym; | |
14123 | asection *sec; | |
039b3fef AM |
14124 | struct elf_link_hash_entry *h_elf; |
14125 | struct ppc_link_hash_entry *h; | |
14126 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14127 | const char *sym_name; |
0d4792f7 | 14128 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14129 | bfd_vma toc_addend; |
f961d9dd AM |
14130 | unsigned char tls_mask, tls_gd, tls_type; |
14131 | unsigned char sym_type; | |
5bd4f169 | 14132 | bfd_vma relocation; |
23cedd1d | 14133 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 14134 | bfd_boolean warned; |
bc30df16 | 14135 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14136 | unsigned int insn; |
e11840f9 | 14137 | unsigned int mask; |
721956f4 AM |
14138 | struct ppc_stub_hash_entry *stub_entry; |
14139 | bfd_vma max_br_offset; | |
14140 | bfd_vma from; | |
c316a17c | 14141 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14142 | reloc_howto_type *howto; |
14143 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
14144 | uint64_t pinsn; |
14145 | bfd_vma offset; | |
5bd4f169 | 14146 | |
c316a17c AM |
14147 | again: |
14148 | orig_rel = *rel; | |
14149 | ||
4ce794b7 | 14150 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 14151 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
14152 | |
14153 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
14154 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
14155 | proper TOC base to use. */ | |
14156 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
14157 | && wrel != relocs |
14158 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 14159 | && is_opd) |
c316a17c | 14160 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 14161 | |
4ce794b7 AM |
14162 | sym = NULL; |
14163 | sec = NULL; | |
039b3fef | 14164 | h_elf = NULL; |
4ce794b7 | 14165 | sym_name = NULL; |
b34976b6 AM |
14166 | unresolved_reloc = FALSE; |
14167 | warned = FALSE; | |
65f38f15 | 14168 | |
0b13192e | 14169 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
14170 | { |
14171 | /* It's a local symbol. */ | |
74f0fb50 | 14172 | struct _opd_sec_data *opd; |
4025353c | 14173 | |
5bd4f169 AM |
14174 | sym = local_syms + r_symndx; |
14175 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14176 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14177 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14178 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14179 | opd = get_opd_info (sec); |
14180 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14181 | { |
51aecdc5 AM |
14182 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14183 | + rel->r_addend)]; | |
4025353c AM |
14184 | if (adjust == -1) |
14185 | relocation = 0; | |
14186 | else | |
4cc603a5 AM |
14187 | { |
14188 | /* If this is a relocation against the opd section sym | |
14189 | and we have edited .opd, adjust the reloc addend so | |
14190 | that ld -r and ld --emit-relocs output is correct. | |
14191 | If it is a reloc against some other .opd symbol, | |
14192 | then the symbol value will be adjusted later. */ | |
14193 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14194 | rel->r_addend += adjust; | |
14195 | else | |
14196 | relocation += adjust; | |
14197 | } | |
1e2f5b6e | 14198 | } |
5bd4f169 AM |
14199 | } |
14200 | else | |
14201 | { | |
62d887d4 L |
14202 | bfd_boolean ignored; |
14203 | ||
b2a8e766 AM |
14204 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14205 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14206 | h_elf, sec, relocation, |
62d887d4 | 14207 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14208 | sym_name = h_elf->root.root.string; |
14209 | sym_type = h_elf->type; | |
b69fdb4e AM |
14210 | if (sec != NULL |
14211 | && sec->owner == output_bfd | |
14212 | && strcmp (sec->name, ".opd") == 0) | |
14213 | { | |
14214 | /* This is a symbol defined in a linker script. All | |
14215 | such are defined in output sections, even those | |
14216 | defined by simple assignment from a symbol defined in | |
14217 | an input section. Transfer the symbol to an | |
14218 | appropriate input .opd section, so that a branch to | |
14219 | this symbol will be mapped to the location specified | |
14220 | by the opd entry. */ | |
14221 | struct bfd_link_order *lo; | |
14222 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14223 | if (lo->type == bfd_indirect_link_order) | |
14224 | { | |
14225 | asection *isec = lo->u.indirect.section; | |
14226 | if (h_elf->root.u.def.value >= isec->output_offset | |
14227 | && h_elf->root.u.def.value < (isec->output_offset | |
14228 | + isec->size)) | |
14229 | { | |
14230 | h_elf->root.u.def.value -= isec->output_offset; | |
14231 | h_elf->root.u.def.section = isec; | |
14232 | sec = isec; | |
14233 | break; | |
14234 | } | |
14235 | } | |
14236 | } | |
5bd4f169 | 14237 | } |
039b3fef | 14238 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 14239 | |
dbaa2011 | 14240 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14241 | { |
14242 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14243 | input_bfd, input_section, | |
0930cb30 | 14244 | contents, rel->r_offset); |
c316a17c AM |
14245 | wrel->r_offset = rel->r_offset; |
14246 | wrel->r_info = 0; | |
14247 | wrel->r_addend = 0; | |
14248 | ||
14249 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14250 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14251 | non-debug to preserve relocs in .eh_frame which the |
14252 | eh_frame editing code expects to be present. */ | |
14253 | if (bfd_link_relocatable (info) | |
14254 | && (input_section->flags & SEC_DEBUGGING)) | |
14255 | wrel--; | |
14256 | ||
14257 | continue; | |
14258 | } | |
ab96bf03 | 14259 | |
0e1862bb | 14260 | if (bfd_link_relocatable (info)) |
c316a17c | 14261 | goto copy_reloc; |
ab96bf03 | 14262 | |
f40da81b AM |
14263 | if (h != NULL && &h->elf == htab->elf.hgot) |
14264 | { | |
6f20ed8a | 14265 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14266 | sec = bfd_abs_section_ptr; |
14267 | unresolved_reloc = FALSE; | |
14268 | } | |
14269 | ||
951fd09b AM |
14270 | /* TLS optimizations. Replace instruction sequences and relocs |
14271 | based on information we collected in tls_optimize. We edit | |
14272 | RELOCS so that --emit-relocs will output something sensible | |
14273 | for the final instruction stream. */ | |
14274 | tls_mask = 0; | |
14275 | tls_gd = 0; | |
0d4792f7 | 14276 | toc_symndx = 0; |
727fc41e AM |
14277 | if (h != NULL) |
14278 | tls_mask = h->tls_mask; | |
14279 | else if (local_got_ents != NULL) | |
411e1bfb | 14280 | { |
e054468f AM |
14281 | struct plt_entry **local_plt = (struct plt_entry **) |
14282 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14283 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14284 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14285 | tls_mask = lgot_masks[r_symndx]; |
14286 | } | |
37da22e5 | 14287 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14288 | && (r_type == R_PPC64_TLS |
14289 | || r_type == R_PPC64_TLSGD | |
14290 | || r_type == R_PPC64_TLSLD)) | |
14291 | { | |
14292 | /* Check for toc tls entries. */ | |
f961d9dd | 14293 | unsigned char *toc_tls; |
0d4792f7 | 14294 | |
727fc41e AM |
14295 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14296 | &local_syms, rel, input_bfd)) | |
14297 | return FALSE; | |
0d4792f7 | 14298 | |
727fc41e AM |
14299 | if (toc_tls) |
14300 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14301 | } |
14302 | ||
14303 | /* Check that tls relocs are used with tls syms, and non-tls | |
14304 | relocs are used with non-tls syms. */ | |
cf35638d | 14305 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14306 | && r_type != R_PPC64_NONE |
14307 | && (h == NULL | |
039b3fef AM |
14308 | || h->elf.root.type == bfd_link_hash_defined |
14309 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
14310 | && (IS_PPC64_TLS_RELOC (r_type) |
14311 | != (sym_type == STT_TLS | |
14312 | || (sym_type == STT_SECTION | |
14313 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 14314 | { |
37da22e5 | 14315 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14316 | && (r_type == R_PPC64_TLS |
14317 | || r_type == R_PPC64_TLSGD | |
14318 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14319 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14320 | ; | |
14321 | else | |
25f53a85 | 14322 | info->callbacks->einfo |
1d483afe | 14323 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14324 | /* xgettext:c-format */ |
c1c8c1ef | 14325 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14326 | /* xgettext:c-format */ |
c1c8c1ef | 14327 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14328 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14329 | ppc64_elf_howto_table[r_type]->name, |
14330 | sym_name); | |
411e1bfb AM |
14331 | } |
14332 | ||
14333 | /* Ensure reloc mapping code below stays sane. */ | |
14334 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14335 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14336 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14337 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14338 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14339 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14340 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14341 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14342 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14343 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14344 | abort (); | |
0d4792f7 | 14345 | |
411e1bfb AM |
14346 | switch (r_type) |
14347 | { | |
14348 | default: | |
411e1bfb AM |
14349 | break; |
14350 | ||
ba761f19 | 14351 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14352 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14353 | if ((insn & (0x3f << 26)) != 58u << 26) |
14354 | abort (); | |
14355 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14356 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14357 | r_type = R_PPC64_TOC16_LO; |
14358 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14359 | break; | |
14360 | ||
411e1bfb AM |
14361 | case R_PPC64_TOC16: |
14362 | case R_PPC64_TOC16_LO: | |
14363 | case R_PPC64_TOC16_DS: | |
14364 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14365 | { |
14366 | /* Check for toc tls entries. */ | |
f961d9dd | 14367 | unsigned char *toc_tls; |
951fd09b | 14368 | int retval; |
411e1bfb | 14369 | |
3a71aa26 AM |
14370 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14371 | &local_syms, rel, input_bfd); | |
951fd09b | 14372 | if (retval == 0) |
411e1bfb AM |
14373 | return FALSE; |
14374 | ||
14375 | if (toc_tls) | |
14376 | { | |
951fd09b | 14377 | tls_mask = *toc_tls; |
411e1bfb AM |
14378 | if (r_type == R_PPC64_TOC16_DS |
14379 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14380 | { |
37da22e5 | 14381 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14382 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14383 | goto toctprel; | |
14384 | } | |
411e1bfb | 14385 | else |
951fd09b AM |
14386 | { |
14387 | /* If we found a GD reloc pair, then we might be | |
14388 | doing a GD->IE transition. */ | |
14389 | if (retval == 2) | |
14390 | { | |
14391 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
14392 | if ((tls_mask & TLS_TLS) != 0 |
14393 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14394 | goto tls_ldgd_opt; |
951fd09b AM |
14395 | } |
14396 | else if (retval == 3) | |
14397 | { | |
37da22e5 AM |
14398 | if ((tls_mask & TLS_TLS) != 0 |
14399 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14400 | goto tls_ldgd_opt; |
951fd09b AM |
14401 | } |
14402 | } | |
411e1bfb AM |
14403 | } |
14404 | } | |
14405 | break; | |
14406 | ||
9d6ded02 AM |
14407 | case R_PPC64_GOT_TPREL16_HI: |
14408 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 14409 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
14410 | && (tls_mask & TLS_TPREL) == 0) |
14411 | { | |
14412 | rel->r_offset -= d_offset; | |
95f0d0d2 | 14413 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
14414 | r_type = R_PPC64_NONE; |
14415 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14416 | } | |
14417 | break; | |
14418 | ||
411e1bfb AM |
14419 | case R_PPC64_GOT_TPREL16_DS: |
14420 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 14421 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14422 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14423 | { |
81407a69 | 14424 | toctprel: |
95f0d0d2 | 14425 | insn = bfd_get_32 (input_bfd, |
c316a17c | 14426 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
14427 | insn &= 31 << 21; |
14428 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 14429 | bfd_put_32 (input_bfd, insn, |
c316a17c | 14430 | contents + rel->r_offset - d_offset); |
411e1bfb | 14431 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
14432 | if (toc_symndx != 0) |
14433 | { | |
14434 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14435 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14436 | /* We changed the symbol. Start over in order to |
14437 | get h, sym, sec etc. right. */ | |
c316a17c | 14438 | goto again; |
0d4792f7 AM |
14439 | } |
14440 | else | |
14441 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14442 | } |
14443 | break; | |
14444 | ||
14445 | case R_PPC64_TLS: | |
37da22e5 | 14446 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14447 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14448 | { |
95f0d0d2 | 14449 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
14450 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
14451 | if (insn == 0) | |
411e1bfb | 14452 | abort (); |
95f0d0d2 | 14453 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 14454 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
14455 | PPC64_TPREL16_LO which is at low-order half-word. */ |
14456 | rel->r_offset += d_offset; | |
0d4792f7 AM |
14457 | r_type = R_PPC64_TPREL16_LO; |
14458 | if (toc_symndx != 0) | |
14459 | { | |
14460 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14461 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14462 | /* We changed the symbol. Start over in order to |
14463 | get h, sym, sec etc. right. */ | |
c316a17c | 14464 | goto again; |
0d4792f7 AM |
14465 | } |
14466 | else | |
14467 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14468 | } |
14469 | break; | |
14470 | ||
411e1bfb AM |
14471 | case R_PPC64_GOT_TLSGD16_HI: |
14472 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14473 | tls_gd = TLS_TPRELGD; |
37da22e5 | 14474 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
14475 | goto tls_gdld_hi; |
14476 | break; | |
14477 | ||
411e1bfb AM |
14478 | case R_PPC64_GOT_TLSLD16_HI: |
14479 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 14480 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 14481 | { |
951fd09b AM |
14482 | tls_gdld_hi: |
14483 | if ((tls_mask & tls_gd) != 0) | |
14484 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14485 | + R_PPC64_GOT_TPREL16_DS); | |
14486 | else | |
411e1bfb | 14487 | { |
4fe5ca5b | 14488 | rel->r_offset -= d_offset; |
95f0d0d2 | 14489 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 14490 | r_type = R_PPC64_NONE; |
411e1bfb | 14491 | } |
951fd09b | 14492 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
14493 | } |
14494 | break; | |
14495 | ||
951fd09b AM |
14496 | case R_PPC64_GOT_TLSGD16: |
14497 | case R_PPC64_GOT_TLSGD16_LO: | |
14498 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 14499 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 14500 | goto tls_ldgd_opt; |
951fd09b | 14501 | break; |
411e1bfb | 14502 | |
951fd09b AM |
14503 | case R_PPC64_GOT_TLSLD16: |
14504 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 14505 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 14506 | { |
b9f04fe0 | 14507 | unsigned int insn1, insn2; |
102890f0 AM |
14508 | |
14509 | tls_ldgd_opt: | |
727fc41e AM |
14510 | offset = (bfd_vma) -1; |
14511 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
14512 | __tls_get_addr calls, we must trust that the call | |
14513 | stays with its arg setup insns, ie. that the next | |
14514 | reloc is the __tls_get_addr call associated with | |
14515 | the current reloc. Edit both insns. */ | |
14516 | if (input_section->has_tls_get_addr_call | |
14517 | && rel + 1 < relend | |
14518 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
14519 | htab->tls_get_addr, | |
14520 | htab->tls_get_addr_fd)) | |
14521 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
14522 | /* We read the low GOT_TLS (or TOC16) insn because we |
14523 | need to keep the destination reg. It may be | |
14524 | something other than the usual r3, and moved to r3 | |
14525 | before the call by intervening code. */ | |
95f0d0d2 | 14526 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 14527 | contents + rel->r_offset - d_offset); |
102890f0 | 14528 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 14529 | { |
102890f0 | 14530 | /* IE */ |
b86ac8e3 | 14531 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
14532 | insn1 |= 58 << 26; /* ld */ |
14533 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 14534 | if (offset != (bfd_vma) -1) |
f58d5a2d | 14535 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
14536 | if ((tls_mask & TLS_EXPLICIT) == 0) |
14537 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14538 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 14539 | else |
102890f0 AM |
14540 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
14541 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14542 | } | |
14543 | else | |
14544 | { | |
14545 | /* LE */ | |
b86ac8e3 AM |
14546 | insn1 &= 0x1f << 21; |
14547 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
14548 | insn2 = 0x38630000; /* addi 3,3,0 */ |
14549 | if (tls_gd == 0) | |
951fd09b | 14550 | { |
102890f0 | 14551 | /* Was an LD reloc. */ |
1d483afe AM |
14552 | if (toc_symndx) |
14553 | sec = local_sections[toc_symndx]; | |
14554 | for (r_symndx = 0; | |
14555 | r_symndx < symtab_hdr->sh_info; | |
14556 | r_symndx++) | |
14557 | if (local_sections[r_symndx] == sec) | |
14558 | break; | |
14559 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14560 | r_symndx = STN_UNDEF; |
102890f0 | 14561 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14562 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
14563 | rel->r_addend -= (local_syms[r_symndx].st_value |
14564 | + sec->output_offset | |
14565 | + sec->output_section->vma); | |
951fd09b | 14566 | } |
102890f0 | 14567 | else if (toc_symndx != 0) |
3a71aa26 AM |
14568 | { |
14569 | r_symndx = toc_symndx; | |
14570 | rel->r_addend = toc_addend; | |
14571 | } | |
102890f0 AM |
14572 | r_type = R_PPC64_TPREL16_HA; |
14573 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
14574 | if (offset != (bfd_vma) -1) |
14575 | { | |
14576 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
14577 | R_PPC64_TPREL16_LO); | |
14578 | rel[1].r_offset = offset + d_offset; | |
14579 | rel[1].r_addend = rel->r_addend; | |
14580 | } | |
102890f0 | 14581 | } |
95f0d0d2 | 14582 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 14583 | contents + rel->r_offset - d_offset); |
727fc41e | 14584 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
14585 | { |
14586 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
14587 | if (offset + 8 <= input_section->size) | |
14588 | { | |
14589 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
14590 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
14591 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
14592 | } | |
14593 | } | |
727fc41e AM |
14594 | if ((tls_mask & tls_gd) == 0 |
14595 | && (tls_gd == 0 || toc_symndx != 0)) | |
14596 | { | |
14597 | /* We changed the symbol. Start over in order | |
14598 | to get h, sym, sec etc. right. */ | |
c316a17c | 14599 | goto again; |
727fc41e AM |
14600 | } |
14601 | } | |
14602 | break; | |
14603 | ||
14604 | case R_PPC64_TLSGD: | |
37da22e5 | 14605 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 14606 | && rel + 1 < relend) |
727fc41e | 14607 | { |
b9f04fe0 | 14608 | unsigned int insn2; |
5663e321 | 14609 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 14610 | |
4a421c53 | 14611 | offset = rel->r_offset; |
5663e321 | 14612 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
14613 | { |
14614 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
14615 | if (r_type1 == R_PPC64_PLT_PCREL34 |
14616 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
14617 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
14618 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
14619 | break; | |
14620 | } | |
14621 | ||
14622 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14623 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14624 | ||
727fc41e AM |
14625 | if ((tls_mask & TLS_TPRELGD) != 0) |
14626 | { | |
14627 | /* IE */ | |
14628 | r_type = R_PPC64_NONE; | |
14629 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
14630 | } | |
14631 | else | |
14632 | { | |
14633 | /* LE */ | |
14634 | if (toc_symndx != 0) | |
14635 | { | |
14636 | r_symndx = toc_symndx; | |
14637 | rel->r_addend = toc_addend; | |
14638 | } | |
14639 | r_type = R_PPC64_TPREL16_LO; | |
14640 | rel->r_offset = offset + d_offset; | |
14641 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
14642 | } | |
14643 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14644 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14645 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14646 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 14647 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 14648 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 14649 | goto again; |
411e1bfb | 14650 | } |
411e1bfb AM |
14651 | break; |
14652 | ||
727fc41e | 14653 | case R_PPC64_TLSLD: |
37da22e5 | 14654 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 14655 | && rel + 1 < relend) |
727fc41e | 14656 | { |
b9f04fe0 | 14657 | unsigned int insn2; |
5663e321 | 14658 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 14659 | |
4a421c53 | 14660 | offset = rel->r_offset; |
5663e321 | 14661 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
14662 | { |
14663 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
14664 | if (r_type1 == R_PPC64_PLT_PCREL34 |
14665 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
14666 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
14667 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
14668 | break; | |
14669 | } | |
14670 | ||
14671 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14672 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14673 | ||
727fc41e AM |
14674 | if (toc_symndx) |
14675 | sec = local_sections[toc_symndx]; | |
14676 | for (r_symndx = 0; | |
14677 | r_symndx < symtab_hdr->sh_info; | |
14678 | r_symndx++) | |
14679 | if (local_sections[r_symndx] == sec) | |
14680 | break; | |
14681 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14682 | r_symndx = STN_UNDEF; |
727fc41e | 14683 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14684 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
14685 | rel->r_addend -= (local_syms[r_symndx].st_value |
14686 | + sec->output_offset | |
14687 | + sec->output_section->vma); | |
14688 | ||
14689 | r_type = R_PPC64_TPREL16_LO; | |
14690 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14691 | rel->r_offset = offset + d_offset; | |
14692 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14693 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14694 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 14695 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 14696 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 14697 | goto again; |
727fc41e AM |
14698 | } |
14699 | break; | |
14700 | ||
411e1bfb | 14701 | case R_PPC64_DTPMOD64: |
951fd09b AM |
14702 | if (rel + 1 < relend |
14703 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
14704 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 14705 | { |
951fd09b AM |
14706 | if ((tls_mask & TLS_GD) == 0) |
14707 | { | |
14708 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
14709 | if ((tls_mask & TLS_TPRELGD) != 0) | |
14710 | r_type = R_PPC64_TPREL64; | |
14711 | else | |
14712 | { | |
4ce794b7 | 14713 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
14714 | r_type = R_PPC64_NONE; |
14715 | } | |
14716 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14717 | } | |
14718 | } | |
14719 | else | |
14720 | { | |
14721 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 14722 | { |
4ce794b7 | 14723 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 14724 | r_type = R_PPC64_NONE; |
951fd09b | 14725 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 14726 | } |
411e1bfb AM |
14727 | } |
14728 | break; | |
14729 | ||
14730 | case R_PPC64_TPREL64: | |
951fd09b | 14731 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
14732 | { |
14733 | r_type = R_PPC64_NONE; | |
14734 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14735 | } | |
14736 | break; | |
52a82034 | 14737 | |
006589cf AM |
14738 | case R_PPC64_ENTRY: |
14739 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14740 | if (!bfd_link_pic (info) | |
14741 | && !info->traditional_format | |
14742 | && relocation + 0x80008000 <= 0xffffffff) | |
14743 | { | |
14744 | unsigned int insn1, insn2; | |
14745 | ||
14746 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14747 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14748 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14749 | && insn2 == ADD_R2_R2_R12) | |
14750 | { | |
95f0d0d2 | 14751 | bfd_put_32 (input_bfd, |
006589cf AM |
14752 | LIS_R2 + PPC_HA (relocation), |
14753 | contents + rel->r_offset); | |
95f0d0d2 | 14754 | bfd_put_32 (input_bfd, |
006589cf AM |
14755 | ADDI_R2_R2 + PPC_LO (relocation), |
14756 | contents + rel->r_offset + 4); | |
14757 | } | |
14758 | } | |
14759 | else | |
14760 | { | |
14761 | relocation -= (rel->r_offset | |
14762 | + input_section->output_offset | |
14763 | + input_section->output_section->vma); | |
14764 | if (relocation + 0x80008000 <= 0xffffffff) | |
14765 | { | |
14766 | unsigned int insn1, insn2; | |
14767 | ||
14768 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14769 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14770 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14771 | && insn2 == ADD_R2_R2_R12) | |
14772 | { | |
95f0d0d2 | 14773 | bfd_put_32 (input_bfd, |
006589cf AM |
14774 | ADDIS_R2_R12 + PPC_HA (relocation), |
14775 | contents + rel->r_offset); | |
95f0d0d2 | 14776 | bfd_put_32 (input_bfd, |
006589cf AM |
14777 | ADDI_R2_R2 + PPC_LO (relocation), |
14778 | contents + rel->r_offset + 4); | |
14779 | } | |
14780 | } | |
14781 | } | |
14782 | break; | |
14783 | ||
52a82034 AM |
14784 | case R_PPC64_REL16_HA: |
14785 | /* If we are generating a non-PIC executable, edit | |
14786 | . 0: addis 2,12,.TOC.-0b@ha | |
14787 | . addi 2,2,.TOC.-0b@l | |
14788 | used by ELFv2 global entry points to set up r2, to | |
14789 | . lis 2,.TOC.@ha | |
14790 | . addi 2,2,.TOC.@l | |
14791 | if .TOC. is in range. */ | |
0e1862bb | 14792 | if (!bfd_link_pic (info) |
810d4e75 | 14793 | && !info->traditional_format |
006589cf | 14794 | && !htab->opd_abi |
4f038ee5 | 14795 | && rel->r_addend == d_offset |
52a82034 AM |
14796 | && h != NULL && &h->elf == htab->elf.hgot |
14797 | && rel + 1 < relend | |
14798 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14799 | && rel[1].r_offset == rel->r_offset + 4 | |
14800 | && rel[1].r_addend == rel->r_addend + 4 | |
14801 | && relocation + 0x80008000 <= 0xffffffff) | |
14802 | { | |
14803 | unsigned int insn1, insn2; | |
4a421c53 | 14804 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
14805 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14806 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14807 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14808 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14809 | { |
14810 | r_type = R_PPC64_ADDR16_HA; | |
14811 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14812 | rel->r_addend -= d_offset; | |
14813 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14814 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14815 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14816 | } |
14817 | } | |
14818 | break; | |
411e1bfb AM |
14819 | } |
14820 | ||
14821 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14822 | insn = 0; |
b25116a9 AM |
14823 | max_br_offset = 1 << 25; |
14824 | addend = rel->r_addend; | |
bc30df16 | 14825 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14826 | switch (r_type) |
5bd4f169 AM |
14827 | { |
14828 | default: | |
65f38f15 | 14829 | break; |
5bd4f169 | 14830 | |
3b421ab3 AM |
14831 | case R_PPC64_TOCSAVE: |
14832 | if (relocation + addend == (rel->r_offset | |
14833 | + input_section->output_offset | |
14834 | + input_section->output_section->vma) | |
14835 | && tocsave_find (htab, NO_INSERT, | |
14836 | &local_syms, rel, input_bfd)) | |
14837 | { | |
14838 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14839 | if (insn == NOP | |
14840 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14841 | bfd_put_32 (input_bfd, |
14842 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14843 | contents + rel->r_offset); |
14844 | } | |
14845 | break; | |
14846 | ||
65f38f15 AM |
14847 | /* Branch taken prediction relocations. */ |
14848 | case R_PPC64_ADDR14_BRTAKEN: | |
14849 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14850 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14851 | /* Fall through. */ |
65f38f15 | 14852 | |
86c76c7b | 14853 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14854 | case R_PPC64_ADDR14_BRNTAKEN: |
14855 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14856 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14857 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14858 | /* Fall through. */ |
86c76c7b | 14859 | |
b25116a9 AM |
14860 | case R_PPC64_REL14: |
14861 | max_br_offset = 1 << 15; | |
1a0670f3 | 14862 | /* Fall through. */ |
5bd4f169 | 14863 | |
65f38f15 | 14864 | case R_PPC64_REL24: |
05d0e962 | 14865 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 14866 | case R_PPC64_PLTCALL: |
5663e321 | 14867 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
14868 | /* Calls to functions with a different TOC, such as calls to |
14869 | shared objects, need to alter the TOC pointer. This is | |
14870 | done using a linkage stub. A REL24 branching to these | |
14871 | linkage stubs needs to be followed by a nop, as the nop | |
14872 | will be replaced with an instruction to restore the TOC | |
14873 | base pointer. */ | |
8387904d | 14874 | fdh = h; |
b31867b6 AM |
14875 | if (h != NULL |
14876 | && h->oh != NULL | |
14877 | && h->oh->is_func_descriptor) | |
14878 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14879 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14880 | htab); | |
5663e321 AM |
14881 | if ((r_type == R_PPC64_PLTCALL |
14882 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 14883 | && stub_entry != NULL |
05d0e962 AM |
14884 | && stub_entry->stub_type >= ppc_stub_plt_call |
14885 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
14886 | stub_entry = NULL; |
14887 | ||
6abec6bc | 14888 | if (stub_entry != NULL |
d0abeec8 AM |
14889 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
14890 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 14891 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
14892 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
14893 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
14894 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 14895 | { |
b25116a9 | 14896 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14897 | |
6e1816be AM |
14898 | if (stub_entry->stub_type == ppc_stub_plt_call |
14899 | && !htab->opd_abi | |
14900 | && htab->params->plt_localentry0 != 0 | |
14901 | && is_elfv2_localentry0 (&h->elf)) | |
14902 | { | |
14903 | /* The function doesn't use or change r2. */ | |
14904 | can_plt_call = TRUE; | |
14905 | } | |
05d0e962 AM |
14906 | else if (r_type == R_PPC64_REL24_NOTOC) |
14907 | { | |
14908 | /* NOTOC calls don't need to restore r2. */ | |
14909 | can_plt_call = TRUE; | |
14910 | } | |
6e1816be | 14911 | |
f378ab09 | 14912 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
14913 | branch and link followed by a nop. The nop is |
14914 | replaced by an insn to restore r2. */ | |
6e1816be | 14915 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14916 | { |
ba8ca3e7 AM |
14917 | unsigned long br; |
14918 | ||
14919 | br = bfd_get_32 (input_bfd, | |
14920 | contents + rel->r_offset); | |
14921 | if ((br & 1) != 0) | |
41bd81ab | 14922 | { |
ba8ca3e7 AM |
14923 | unsigned long nop; |
14924 | ||
14925 | nop = bfd_get_32 (input_bfd, | |
14926 | contents + rel->r_offset + 4); | |
23cedd1d AM |
14927 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
14928 | can_plt_call = TRUE; | |
14929 | else if (nop == NOP | |
14930 | || nop == CROR_151515 | |
14931 | || nop == CROR_313131) | |
a7f2871e | 14932 | { |
ba8ca3e7 AM |
14933 | if (h != NULL |
14934 | && (h == htab->tls_get_addr_fd | |
14935 | || h == htab->tls_get_addr) | |
7c9cf415 | 14936 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14937 | { |
14938 | /* Special stub used, leave nop alone. */ | |
14939 | } | |
14940 | else | |
a078d95a AM |
14941 | bfd_put_32 (input_bfd, |
14942 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14943 | contents + rel->r_offset + 4); |
14944 | can_plt_call = TRUE; | |
a7f2871e | 14945 | } |
41bd81ab | 14946 | } |
5bd4f169 | 14947 | } |
721956f4 | 14948 | |
ba8ca3e7 | 14949 | if (!can_plt_call && h != NULL) |
721956f4 | 14950 | { |
ba8ca3e7 AM |
14951 | const char *name = h->elf.root.root.string; |
14952 | ||
14953 | if (*name == '.') | |
14954 | ++name; | |
14955 | ||
14956 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14957 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14958 | { |
ba8ca3e7 AM |
14959 | /* Allow crt1 branch to go via a toc adjusting |
14960 | stub. Other calls that never return could do | |
14961 | the same, if we could detect such. */ | |
b25116a9 | 14962 | can_plt_call = TRUE; |
6ab189d5 | 14963 | } |
ba8ca3e7 AM |
14964 | } |
14965 | ||
14966 | if (!can_plt_call) | |
14967 | { | |
14968 | /* g++ as of 20130507 emits self-calls without a | |
14969 | following nop. This is arguably wrong since we | |
14970 | have conflicting information. On the one hand a | |
14971 | global symbol and on the other a local call | |
14972 | sequence, but don't error for this special case. | |
14973 | It isn't possible to cheaply verify we have | |
14974 | exactly such a call. Allow all calls to the same | |
14975 | section. */ | |
14976 | asection *code_sec = sec; | |
14977 | ||
14978 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14979 | { |
ba8ca3e7 AM |
14980 | bfd_vma off = (relocation + addend |
14981 | - sec->output_section->vma | |
14982 | - sec->output_offset); | |
bc30df16 | 14983 | |
ba8ca3e7 | 14984 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14985 | } |
ba8ca3e7 AM |
14986 | if (code_sec == input_section) |
14987 | can_plt_call = TRUE; | |
14988 | } | |
14989 | ||
14990 | if (!can_plt_call) | |
14991 | { | |
05d0e962 AM |
14992 | if (stub_entry->stub_type >= ppc_stub_plt_call |
14993 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 14994 | info->callbacks->einfo |
695344c0 | 14995 | /* xgettext:c-format */ |
c1c8c1ef | 14996 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 14997 | "(plt call stub)\n"), |
4805fc55 AM |
14998 | input_bfd, input_section, rel->r_offset, sym_name); |
14999 | else | |
15000 | info->callbacks->einfo | |
695344c0 | 15001 | /* xgettext:c-format */ |
c1c8c1ef | 15002 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15003 | "(toc save/adjust stub)\n"), |
4805fc55 | 15004 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
15005 | |
15006 | bfd_set_error (bfd_error_bad_value); | |
15007 | ret = FALSE; | |
721956f4 AM |
15008 | } |
15009 | ||
b25116a9 | 15010 | if (can_plt_call |
05d0e962 AM |
15011 | && stub_entry->stub_type >= ppc_stub_plt_call |
15012 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
15013 | unresolved_reloc = FALSE; |
15014 | } | |
15015 | ||
6abec6bc AM |
15016 | if ((stub_entry == NULL |
15017 | || stub_entry->stub_type == ppc_stub_long_branch | |
15018 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15019 | && get_opd_info (sec) != NULL) |
15020 | { | |
15021 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15022 | bfd_vma off = (relocation + addend |
15023 | - sec->output_section->vma | |
15024 | - sec->output_offset); | |
aef36ac1 | 15025 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
15026 | if (dest != (bfd_vma) -1) |
15027 | { | |
15028 | relocation = dest; | |
15029 | addend = 0; | |
bc30df16 | 15030 | reloc_dest = DEST_OPD; |
8387904d AM |
15031 | } |
15032 | } | |
15033 | ||
b25116a9 AM |
15034 | /* If the branch is out of reach we ought to have a long |
15035 | branch stub. */ | |
15036 | from = (rel->r_offset | |
15037 | + input_section->output_offset | |
15038 | + input_section->output_section->vma); | |
15039 | ||
6911b7dc AM |
15040 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15041 | ? fdh->elf.other | |
15042 | : sym->st_other); | |
15043 | ||
6abec6bc AM |
15044 | if (stub_entry != NULL |
15045 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15046 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15047 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15048 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15049 | || (relocation + addend - from + max_br_offset | |
15050 | < 2 * max_br_offset))) | |
15051 | /* Don't use the stub if this branch is in range. */ | |
15052 | stub_entry = NULL; | |
b25116a9 | 15053 | |
05d0e962 AM |
15054 | if (stub_entry != NULL |
15055 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15056 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15057 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15058 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15059 | && (r_type != R_PPC64_REL24_NOTOC | |
15060 | || ((fdh ? fdh->elf.other : sym->st_other) | |
4a4e7361 | 15061 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) |
05d0e962 AM |
15062 | && (relocation + addend - from + max_br_offset |
15063 | < 2 * max_br_offset)) | |
15064 | stub_entry = NULL; | |
15065 | ||
15066 | if (stub_entry != NULL | |
15067 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15068 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15069 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
15070 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15071 | && r_type == R_PPC64_REL24_NOTOC | |
15072 | && (relocation + addend - from + max_br_offset | |
15073 | < 2 * max_br_offset)) | |
15074 | stub_entry = NULL; | |
15075 | ||
b25116a9 AM |
15076 | if (stub_entry != NULL) |
15077 | { | |
15078 | /* Munge up the value and addend so that we call the stub | |
15079 | rather than the procedure directly. */ | |
a4b6fadd AM |
15080 | asection *stub_sec = stub_entry->group->stub_sec; |
15081 | ||
15082 | if (stub_entry->stub_type == ppc_stub_save_res) | |
15083 | relocation += (stub_sec->output_offset | |
15084 | + stub_sec->output_section->vma | |
15085 | + stub_sec->size - htab->sfpr->size | |
15086 | - htab->sfpr->output_offset | |
15087 | - htab->sfpr->output_section->vma); | |
15088 | else | |
15089 | relocation = (stub_entry->stub_offset | |
15090 | + stub_sec->output_offset | |
15091 | + stub_sec->output_section->vma); | |
b25116a9 | 15092 | addend = 0; |
bc30df16 | 15093 | reloc_dest = DEST_STUB; |
3b421ab3 | 15094 | |
05d0e962 AM |
15095 | if (((stub_entry->stub_type == ppc_stub_plt_call |
15096 | && ALWAYS_EMIT_R2SAVE) | |
15097 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
15098 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 AM |
15099 | && !(h != NULL |
15100 | && (h == htab->tls_get_addr_fd | |
15101 | || h == htab->tls_get_addr) | |
15102 | && htab->params->tls_get_addr_opt) | |
3b421ab3 AM |
15103 | && rel + 1 < relend |
15104 | && rel[1].r_offset == rel->r_offset + 4 | |
15105 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
15106 | relocation += 4; | |
05d0e962 AM |
15107 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
15108 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
15109 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
15110 | && r_type == R_PPC64_REL24_NOTOC) | |
15111 | relocation += 4; | |
5663e321 AM |
15112 | |
15113 | if (r_type == R_PPC64_REL24_NOTOC | |
15114 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
15115 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
15116 | htab->notoc_plt = 1; | |
b25116a9 AM |
15117 | } |
15118 | ||
15119 | if (insn != 0) | |
15120 | { | |
794e51c0 | 15121 | if (is_isa_v2) |
721956f4 | 15122 | { |
b25116a9 AM |
15123 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
15124 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
15125 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
15126 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
15127 | insn |= 0x02 << 21; | |
15128 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
15129 | insn |= 0x08 << 21; | |
15130 | else | |
15131 | break; | |
15132 | } | |
15133 | else | |
15134 | { | |
15135 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 15136 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 15137 | insn ^= 0x01 << 21; |
721956f4 | 15138 | } |
b25116a9 | 15139 | |
95f0d0d2 | 15140 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 15141 | } |
e86ce104 | 15142 | |
06da1e8e AM |
15143 | /* NOP out calls to undefined weak functions. |
15144 | We can thus call a weak function without first | |
15145 | checking whether the function is defined. */ | |
b25116a9 | 15146 | else if (h != NULL |
039b3fef | 15147 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 15148 | && h->elf.dynindx == -1 |
05d0e962 AM |
15149 | && (r_type == R_PPC64_REL24 |
15150 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 15151 | && relocation == 0 |
4cc603a5 | 15152 | && addend == 0) |
e86ce104 | 15153 | { |
95f0d0d2 | 15154 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 15155 | goto copy_reloc; |
e86ce104 | 15156 | } |
65f38f15 | 15157 | break; |
066f4018 AM |
15158 | |
15159 | case R_PPC64_GOT16_DS: | |
15160 | from = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15161 | if (relocation + addend - from + 0x8000 < 0x10000 | |
15162 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15163 | { | |
15164 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
15165 | if ((insn & (0x3f << 26 | 0x3)) == 58u << 26 /* ld */) | |
15166 | { | |
15167 | insn += (14u << 26) - (58u << 26); | |
15168 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15169 | r_type = R_PPC64_TOC16; | |
15170 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15171 | } | |
15172 | } | |
15173 | break; | |
15174 | ||
15175 | case R_PPC64_GOT16_LO_DS: | |
15176 | case R_PPC64_GOT16_HA: | |
15177 | from = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15178 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
15179 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15180 | { | |
15181 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
15182 | if ((insn & (0x3f << 26 | 0x3)) == 58u << 26 /* ld */) | |
15183 | { | |
15184 | insn += (14u << 26) - (58u << 26); | |
15185 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15186 | r_type = R_PPC64_TOC16_LO; | |
15187 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15188 | } | |
15189 | else if ((insn & (0x3f << 26)) == 15u << 26 /* addis */) | |
15190 | { | |
15191 | r_type = R_PPC64_TOC16_HA; | |
15192 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15193 | } | |
15194 | } | |
15195 | break; | |
4a421c53 AM |
15196 | |
15197 | case R_PPC64_GOT_PCREL34: | |
15198 | from = (rel->r_offset | |
15199 | + input_section->output_section->vma | |
15200 | + input_section->output_offset); | |
15201 | if (relocation - from + (1ULL << 33) < 1ULL << 34 | |
15202 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15203 | { | |
15204 | offset = rel->r_offset; | |
15205 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15206 | pinsn <<= 32; | |
15207 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15208 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15209 | == ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
15210 | { | |
15211 | /* Replace with paddi. */ | |
15212 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
15213 | r_type = R_PPC64_PCREL34; | |
15214 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15215 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
15216 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
15217 | goto pcrelopt; | |
15218 | } | |
15219 | } | |
15220 | break; | |
15221 | ||
15222 | case R_PPC64_PCREL34: | |
15223 | if (SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15224 | { | |
15225 | offset = rel->r_offset; | |
15226 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15227 | pinsn <<= 32; | |
15228 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15229 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15230 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
15231 | | (14ULL << 26) /* paddi */)) | |
15232 | { | |
15233 | pcrelopt: | |
15234 | if (rel + 1 < relend | |
15235 | && rel[1].r_offset == offset | |
15236 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT)) | |
15237 | { | |
15238 | bfd_vma off2 = rel[1].r_addend; | |
15239 | if (off2 == 0) | |
15240 | /* zero means next insn. */ | |
15241 | off2 = 8; | |
15242 | off2 += offset; | |
15243 | if (off2 + 4 <= input_section->size) | |
15244 | { | |
15245 | uint64_t pinsn2; | |
15246 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); | |
15247 | pinsn2 <<= 32; | |
15248 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
15249 | break; | |
15250 | if (xlate_pcrel_opt (&pinsn, &pinsn2)) | |
15251 | { | |
15252 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15253 | contents + offset); | |
15254 | bfd_put_32 (input_bfd, pinsn, | |
15255 | contents + offset + 4); | |
15256 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
15257 | contents + off2); | |
15258 | } | |
15259 | } | |
15260 | } | |
15261 | } | |
15262 | } | |
15263 | break; | |
65f38f15 | 15264 | } |
5bd4f169 | 15265 | |
65f38f15 | 15266 | /* Set `addend'. */ |
411e1bfb | 15267 | tls_type = 0; |
23cedd1d | 15268 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
15269 | switch (r_type) |
15270 | { | |
15271 | default: | |
cf97bcb0 AM |
15272 | /* xgettext:c-format */ |
15273 | _bfd_error_handler (_("%pB: %s unsupported"), | |
15274 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 15275 | |
65f38f15 | 15276 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15277 | ret = FALSE; |
c316a17c | 15278 | goto copy_reloc; |
5bd4f169 | 15279 | |
65f38f15 | 15280 | case R_PPC64_NONE: |
411e1bfb | 15281 | case R_PPC64_TLS: |
727fc41e AM |
15282 | case R_PPC64_TLSGD: |
15283 | case R_PPC64_TLSLD: | |
3b421ab3 | 15284 | case R_PPC64_TOCSAVE: |
04c9666a AM |
15285 | case R_PPC64_GNU_VTINHERIT: |
15286 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 15287 | case R_PPC64_ENTRY: |
4a421c53 | 15288 | case R_PPC64_PCREL_OPT: |
c316a17c | 15289 | goto copy_reloc; |
5bd4f169 AM |
15290 | |
15291 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
15292 | address in the GOT as relocation value instead of the | |
411e1bfb | 15293 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 15294 | symbol and put the symbol value there. */ |
411e1bfb AM |
15295 | case R_PPC64_GOT_TLSGD16: |
15296 | case R_PPC64_GOT_TLSGD16_LO: | |
15297 | case R_PPC64_GOT_TLSGD16_HI: | |
15298 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 15299 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
15300 | goto dogot; |
15301 | ||
15302 | case R_PPC64_GOT_TLSLD16: | |
15303 | case R_PPC64_GOT_TLSLD16_LO: | |
15304 | case R_PPC64_GOT_TLSLD16_HI: | |
15305 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 15306 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
15307 | goto dogot; |
15308 | ||
15309 | case R_PPC64_GOT_TPREL16_DS: | |
15310 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15311 | case R_PPC64_GOT_TPREL16_HI: | |
15312 | case R_PPC64_GOT_TPREL16_HA: | |
15313 | tls_type = TLS_TLS | TLS_TPREL; | |
15314 | goto dogot; | |
15315 | ||
15316 | case R_PPC64_GOT_DTPREL16_DS: | |
15317 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15318 | case R_PPC64_GOT_DTPREL16_HI: | |
15319 | case R_PPC64_GOT_DTPREL16_HA: | |
15320 | tls_type = TLS_TLS | TLS_DTPREL; | |
15321 | goto dogot; | |
15322 | ||
65f38f15 AM |
15323 | case R_PPC64_GOT16: |
15324 | case R_PPC64_GOT16_LO: | |
15325 | case R_PPC64_GOT16_HI: | |
15326 | case R_PPC64_GOT16_HA: | |
15327 | case R_PPC64_GOT16_DS: | |
15328 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 15329 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 15330 | dogot: |
5bd4f169 AM |
15331 | { |
15332 | /* Relocation is to the entry for this symbol in the global | |
15333 | offset table. */ | |
e717da7e | 15334 | asection *got; |
d881513a | 15335 | bfd_vma *offp; |
5bd4f169 | 15336 | bfd_vma off; |
d881513a | 15337 | unsigned long indx = 0; |
927be08e | 15338 | struct got_entry *ent; |
5663e321 AM |
15339 | bfd_vma sym_addend = orig_rel.r_addend; |
15340 | ||
15341 | if (r_type == R_PPC64_GOT_PCREL34) | |
15342 | sym_addend = 0; | |
65f38f15 | 15343 | |
d881513a AM |
15344 | if (tls_type == (TLS_TLS | TLS_LD) |
15345 | && (h == NULL | |
f5385ebf | 15346 | || !h->elf.def_dynamic)) |
927be08e | 15347 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 15348 | else |
5bd4f169 | 15349 | { |
d881513a AM |
15350 | if (h != NULL) |
15351 | { | |
f0158f44 AM |
15352 | if (!htab->elf.dynamic_sections_created |
15353 | || h->elf.dynindx == -1 | |
15354 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 15355 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
15356 | /* This is actually a static link, or it is a |
15357 | -Bsymbolic link and the symbol is defined | |
15358 | locally, or the symbol was forced to be local | |
15359 | because of a version file. */ | |
15360 | ; | |
15361 | else | |
15362 | { | |
039b3fef | 15363 | indx = h->elf.dynindx; |
d881513a AM |
15364 | unresolved_reloc = FALSE; |
15365 | } | |
039b3fef | 15366 | ent = h->elf.got.glist; |
d881513a | 15367 | } |
411e1bfb | 15368 | else |
5bd4f169 | 15369 | { |
d881513a AM |
15370 | if (local_got_ents == NULL) |
15371 | abort (); | |
15372 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 15373 | } |
d881513a AM |
15374 | |
15375 | for (; ent != NULL; ent = ent->next) | |
5663e321 | 15376 | if (ent->addend == sym_addend |
e717da7e | 15377 | && ent->owner == input_bfd |
d881513a AM |
15378 | && ent->tls_type == tls_type) |
15379 | break; | |
5bd4f169 | 15380 | } |
411e1bfb | 15381 | |
927be08e AM |
15382 | if (ent == NULL) |
15383 | abort (); | |
15384 | if (ent->is_indirect) | |
15385 | ent = ent->got.ent; | |
15386 | offp = &ent->got.offset; | |
15387 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
15388 | if (got == NULL) |
15389 | abort (); | |
15390 | ||
411e1bfb AM |
15391 | /* The offset must always be a multiple of 8. We use the |
15392 | least significant bit to record whether we have already | |
15393 | processed this entry. */ | |
d881513a | 15394 | off = *offp; |
411e1bfb AM |
15395 | if ((off & 1) != 0) |
15396 | off &= ~1; | |
5bd4f169 AM |
15397 | else |
15398 | { | |
411e1bfb AM |
15399 | /* Generate relocs for the dynamic linker, except in |
15400 | the case of TLSLD where we'll use one entry per | |
15401 | module. */ | |
25f23106 AM |
15402 | asection *relgot; |
15403 | bfd_boolean ifunc; | |
e717da7e | 15404 | |
d881513a | 15405 | *offp = off | 1; |
25f23106 AM |
15406 | relgot = NULL; |
15407 | ifunc = (h != NULL | |
15408 | ? h->elf.type == STT_GNU_IFUNC | |
15409 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 15410 | if (ifunc) |
82e66161 AM |
15411 | { |
15412 | relgot = htab->elf.irelplt; | |
15413 | if (indx == 0) | |
15414 | htab->local_ifunc_resolver = 1; | |
15415 | else if (is_static_defined (&h->elf)) | |
15416 | htab->maybe_local_ifunc_resolver = 1; | |
15417 | } | |
f0158f44 AM |
15418 | else if (indx != 0 |
15419 | || (bfd_link_pic (info) | |
15420 | && (h == NULL | |
21d68fcd | 15421 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 15422 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
15423 | && !h->elf.def_dynamic)) |
15424 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
15425 | && bfd_link_executable (info) | |
15426 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 15427 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 15428 | if (relgot != NULL) |
5bd4f169 | 15429 | { |
e717da7e AM |
15430 | outrel.r_offset = (got->output_section->vma |
15431 | + got->output_offset | |
411e1bfb | 15432 | + off); |
5663e321 | 15433 | outrel.r_addend = sym_addend; |
d881513a | 15434 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 15435 | { |
411e1bfb | 15436 | outrel.r_addend = 0; |
e515b051 | 15437 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
15438 | if (tls_type == (TLS_TLS | TLS_GD)) |
15439 | { | |
e717da7e AM |
15440 | loc = relgot->contents; |
15441 | loc += (relgot->reloc_count++ | |
d881513a AM |
15442 | * sizeof (Elf64_External_Rela)); |
15443 | bfd_elf64_swap_reloca_out (output_bfd, | |
15444 | &outrel, loc); | |
e515b051 | 15445 | outrel.r_offset += 8; |
5663e321 | 15446 | outrel.r_addend = sym_addend; |
d881513a AM |
15447 | outrel.r_info |
15448 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 15449 | } |
411e1bfb | 15450 | } |
951fd09b | 15451 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 15452 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 15453 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 15454 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
15455 | else if (indx != 0) |
15456 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
15457 | else | |
81407a69 | 15458 | { |
25f23106 AM |
15459 | if (ifunc) |
15460 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15461 | else | |
15462 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
15463 | |
15464 | /* Write the .got section contents for the sake | |
15465 | of prelink. */ | |
e717da7e | 15466 | loc = got->contents + off; |
23fbd6fa JJ |
15467 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
15468 | loc); | |
81407a69 | 15469 | } |
81407a69 AM |
15470 | |
15471 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
15472 | { |
15473 | outrel.r_addend += relocation; | |
15474 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
15475 | { |
15476 | if (htab->elf.tls_sec == NULL) | |
15477 | outrel.r_addend = 0; | |
15478 | else | |
15479 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
15480 | } | |
e515b051 | 15481 | } |
e717da7e AM |
15482 | loc = relgot->contents; |
15483 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
15484 | * sizeof (Elf64_External_Rela)); |
15485 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
15486 | } | |
15487 | ||
ad8e1ba5 | 15488 | /* Init the .got section contents here if we're not |
81407a69 | 15489 | emitting a reloc. */ |
d881513a | 15490 | else |
411e1bfb | 15491 | { |
5663e321 | 15492 | relocation += sym_addend; |
f0158f44 | 15493 | if (tls_type != 0) |
411e1bfb | 15494 | { |
989f9879 AM |
15495 | if (htab->elf.tls_sec == NULL) |
15496 | relocation = 0; | |
15497 | else | |
15498 | { | |
f0158f44 AM |
15499 | if (tls_type & TLS_LD) |
15500 | relocation = 0; | |
15501 | else | |
15502 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 15503 | if (tls_type & TLS_TPREL) |
989f9879 AM |
15504 | relocation += DTP_OFFSET - TP_OFFSET; |
15505 | } | |
5bd4f169 | 15506 | |
f0158f44 | 15507 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
15508 | { |
15509 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15510 | got->contents + off + 8); |
676ee2b5 | 15511 | relocation = 1; |
7b609f53 | 15512 | } |
411e1bfb AM |
15513 | } |
15514 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15515 | got->contents + off); |
5bd4f169 AM |
15516 | } |
15517 | } | |
15518 | ||
65f38f15 AM |
15519 | if (off >= (bfd_vma) -2) |
15520 | abort (); | |
15521 | ||
bf102f86 | 15522 | relocation = got->output_section->vma + got->output_offset + off; |
5663e321 AM |
15523 | if (r_type != R_PPC64_GOT_PCREL34) |
15524 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); | |
5bd4f169 | 15525 | } |
65f38f15 AM |
15526 | break; |
15527 | ||
15528 | case R_PPC64_PLT16_HA: | |
15529 | case R_PPC64_PLT16_HI: | |
15530 | case R_PPC64_PLT16_LO: | |
08be3224 | 15531 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
15532 | case R_PPC64_PLT_PCREL34: |
15533 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
15534 | case R_PPC64_PLT32: |
15535 | case R_PPC64_PLT64: | |
23cedd1d | 15536 | case R_PPC64_PLTSEQ: |
5663e321 | 15537 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 15538 | case R_PPC64_PLTCALL: |
5663e321 | 15539 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
15540 | /* Relocation is to the entry for this symbol in the |
15541 | procedure linkage table. */ | |
23cedd1d | 15542 | unresolved_reloc = TRUE; |
cbf95972 AM |
15543 | { |
15544 | struct plt_entry **plt_list = NULL; | |
15545 | if (h != NULL) | |
15546 | plt_list = &h->elf.plt.plist; | |
15547 | else if (local_got_ents != NULL) | |
15548 | { | |
15549 | struct plt_entry **local_plt = (struct plt_entry **) | |
15550 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 15551 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
15552 | } |
15553 | if (plt_list) | |
15554 | { | |
15555 | struct plt_entry *ent; | |
5663e321 AM |
15556 | bfd_vma sym_addend = orig_rel.r_addend; |
15557 | ||
15558 | if (r_type == R_PPC64_PLT_PCREL34 | |
15559 | || r_type == R_PPC64_PLT_PCREL34_NOTOC) | |
15560 | sym_addend = 0; | |
65f38f15 | 15561 | |
cbf95972 AM |
15562 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
15563 | if (ent->plt.offset != (bfd_vma) -1 | |
5663e321 | 15564 | && ent->addend == sym_addend) |
cbf95972 AM |
15565 | { |
15566 | asection *plt; | |
08be3224 | 15567 | bfd_vma got; |
cbf95972 AM |
15568 | |
15569 | plt = htab->elf.splt; | |
15570 | if (!htab->elf.dynamic_sections_created | |
15571 | || h == NULL | |
15572 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
15573 | { |
15574 | if (h != NULL | |
15575 | ? h->elf.type == STT_GNU_IFUNC | |
15576 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15577 | plt = htab->elf.iplt; | |
15578 | else | |
15579 | plt = htab->pltlocal; | |
15580 | } | |
15581 | relocation = (plt->output_section->vma | |
15582 | + plt->output_offset | |
15583 | + ent->plt.offset); | |
08be3224 | 15584 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
15585 | || r_type == R_PPC64_PLT16_HI |
15586 | || r_type == R_PPC64_PLT16_LO | |
15587 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
15588 | { |
15589 | got = (elf_gp (output_bfd) | |
15590 | + htab->sec_info[input_section->id].toc_off); | |
15591 | relocation -= got; | |
15592 | } | |
5663e321 AM |
15593 | if (r_type != R_PPC64_PLT_PCREL34 |
15594 | && r_type != R_PPC64_PLT_PCREL34_NOTOC) | |
15595 | addend = 0; | |
cbf95972 AM |
15596 | unresolved_reloc = FALSE; |
15597 | break; | |
15598 | } | |
15599 | } | |
15600 | } | |
65f38f15 | 15601 | break; |
5bd4f169 | 15602 | |
0b13192e AM |
15603 | case R_PPC64_TOC: |
15604 | /* Relocation value is TOC base. */ | |
15605 | relocation = TOCstart; | |
cf35638d | 15606 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 15607 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
15608 | else if (unresolved_reloc) |
15609 | ; | |
6f20ed8a AM |
15610 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
15611 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
15612 | else |
15613 | unresolved_reloc = TRUE; | |
ab96bf03 | 15614 | goto dodyn; |
0b13192e | 15615 | |
5bd4f169 AM |
15616 | /* TOC16 relocs. We want the offset relative to the TOC base, |
15617 | which is the address of the start of the TOC plus 0x8000. | |
15618 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
15619 | in this order. */ | |
65f38f15 AM |
15620 | case R_PPC64_TOC16: |
15621 | case R_PPC64_TOC16_LO: | |
15622 | case R_PPC64_TOC16_HI: | |
15623 | case R_PPC64_TOC16_DS: | |
15624 | case R_PPC64_TOC16_LO_DS: | |
15625 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 15626 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
15627 | break; |
15628 | ||
15629 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
15630 | case R_PPC64_SECTOFF: |
15631 | case R_PPC64_SECTOFF_LO: | |
15632 | case R_PPC64_SECTOFF_HI: | |
15633 | case R_PPC64_SECTOFF_DS: | |
15634 | case R_PPC64_SECTOFF_LO_DS: | |
15635 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 15636 | if (sec != NULL) |
65f38f15 | 15637 | addend -= sec->output_section->vma; |
5bd4f169 AM |
15638 | break; |
15639 | ||
25f23106 AM |
15640 | case R_PPC64_REL16: |
15641 | case R_PPC64_REL16_LO: | |
15642 | case R_PPC64_REL16_HI: | |
15643 | case R_PPC64_REL16_HA: | |
4a969973 AM |
15644 | case R_PPC64_REL16_HIGH: |
15645 | case R_PPC64_REL16_HIGHA: | |
15646 | case R_PPC64_REL16_HIGHER: | |
15647 | case R_PPC64_REL16_HIGHERA: | |
15648 | case R_PPC64_REL16_HIGHEST: | |
15649 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
15650 | case R_PPC64_REL16_HIGHER34: |
15651 | case R_PPC64_REL16_HIGHERA34: | |
15652 | case R_PPC64_REL16_HIGHEST34: | |
15653 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 15654 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
15655 | case R_PPC64_REL14: |
15656 | case R_PPC64_REL14_BRNTAKEN: | |
15657 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 15658 | case R_PPC64_REL24: |
05d0e962 | 15659 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
15660 | case R_PPC64_PCREL34: |
15661 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
15662 | break; |
15663 | ||
411e1bfb AM |
15664 | case R_PPC64_TPREL16: |
15665 | case R_PPC64_TPREL16_LO: | |
15666 | case R_PPC64_TPREL16_HI: | |
15667 | case R_PPC64_TPREL16_HA: | |
15668 | case R_PPC64_TPREL16_DS: | |
15669 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
15670 | case R_PPC64_TPREL16_HIGH: |
15671 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
15672 | case R_PPC64_TPREL16_HIGHER: |
15673 | case R_PPC64_TPREL16_HIGHERA: | |
15674 | case R_PPC64_TPREL16_HIGHEST: | |
15675 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
15676 | if (h != NULL |
15677 | && h->elf.root.type == bfd_link_hash_undefweak | |
15678 | && h->elf.dynindx == -1) | |
15679 | { | |
15680 | /* Make this relocation against an undefined weak symbol | |
15681 | resolve to zero. This is really just a tweak, since | |
15682 | code using weak externs ought to check that they are | |
15683 | defined before using them. */ | |
15684 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
15685 | ||
95f0d0d2 | 15686 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
15687 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
15688 | if (insn != 0) | |
95f0d0d2 | 15689 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
15690 | break; |
15691 | } | |
989f9879 AM |
15692 | if (htab->elf.tls_sec != NULL) |
15693 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
15694 | /* The TPREL16 relocs shouldn't really be used in shared |
15695 | libs or with non-local symbols as that will result in | |
15696 | DT_TEXTREL being set, but support them anyway. */ | |
15697 | goto dodyn; | |
411e1bfb AM |
15698 | |
15699 | case R_PPC64_DTPREL16: | |
15700 | case R_PPC64_DTPREL16_LO: | |
15701 | case R_PPC64_DTPREL16_HI: | |
15702 | case R_PPC64_DTPREL16_HA: | |
15703 | case R_PPC64_DTPREL16_DS: | |
15704 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
15705 | case R_PPC64_DTPREL16_HIGH: |
15706 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
15707 | case R_PPC64_DTPREL16_HIGHER: |
15708 | case R_PPC64_DTPREL16_HIGHERA: | |
15709 | case R_PPC64_DTPREL16_HIGHEST: | |
15710 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
15711 | if (htab->elf.tls_sec != NULL) |
15712 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
15713 | break; |
15714 | ||
45965137 AM |
15715 | case R_PPC64_ADDR64_LOCAL: |
15716 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
15717 | ? h->elf.other | |
15718 | : sym->st_other); | |
15719 | break; | |
15720 | ||
e515b051 AM |
15721 | case R_PPC64_DTPMOD64: |
15722 | relocation = 1; | |
15723 | addend = 0; | |
15724 | goto dodyn; | |
15725 | ||
411e1bfb | 15726 | case R_PPC64_TPREL64: |
989f9879 AM |
15727 | if (htab->elf.tls_sec != NULL) |
15728 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
15729 | goto dodyn; |
15730 | ||
15731 | case R_PPC64_DTPREL64: | |
989f9879 AM |
15732 | if (htab->elf.tls_sec != NULL) |
15733 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 15734 | /* Fall through. */ |
411e1bfb | 15735 | |
65f38f15 AM |
15736 | /* Relocations that may need to be propagated if this is a |
15737 | dynamic object. */ | |
04c9666a | 15738 | case R_PPC64_REL30: |
65f38f15 AM |
15739 | case R_PPC64_REL32: |
15740 | case R_PPC64_REL64: | |
15741 | case R_PPC64_ADDR14: | |
15742 | case R_PPC64_ADDR14_BRNTAKEN: | |
15743 | case R_PPC64_ADDR14_BRTAKEN: | |
15744 | case R_PPC64_ADDR16: | |
15745 | case R_PPC64_ADDR16_DS: | |
15746 | case R_PPC64_ADDR16_HA: | |
15747 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
15748 | case R_PPC64_ADDR16_HIGH: |
15749 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15750 | case R_PPC64_ADDR16_HIGHER: |
15751 | case R_PPC64_ADDR16_HIGHERA: | |
15752 | case R_PPC64_ADDR16_HIGHEST: | |
15753 | case R_PPC64_ADDR16_HIGHESTA: | |
15754 | case R_PPC64_ADDR16_LO: | |
15755 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
15756 | case R_PPC64_ADDR16_HIGHER34: |
15757 | case R_PPC64_ADDR16_HIGHERA34: | |
15758 | case R_PPC64_ADDR16_HIGHEST34: | |
15759 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 15760 | case R_PPC64_ADDR24: |
65f38f15 AM |
15761 | case R_PPC64_ADDR32: |
15762 | case R_PPC64_ADDR64: | |
15763 | case R_PPC64_UADDR16: | |
15764 | case R_PPC64_UADDR32: | |
15765 | case R_PPC64_UADDR64: | |
5663e321 AM |
15766 | case R_PPC64_D34: |
15767 | case R_PPC64_D34_LO: | |
15768 | case R_PPC64_D34_HI30: | |
15769 | case R_PPC64_D34_HA30: | |
15770 | case R_PPC64_D28: | |
411e1bfb | 15771 | dodyn: |
5d1634d7 | 15772 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
15773 | break; |
15774 | ||
41bd81ab AM |
15775 | if (NO_OPD_RELOCS && is_opd) |
15776 | break; | |
15777 | ||
8a9e8e72 | 15778 | if (bfd_link_pic (info) |
b1b07054 AM |
15779 | ? ((h == NULL |
15780 | || h->dyn_relocs != NULL) | |
15781 | && ((h != NULL && pc_dynrelocs (h)) | |
15782 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
15783 | : (h != NULL |
15784 | ? h->dyn_relocs != NULL | |
d311bc8b | 15785 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 15786 | { |
b34976b6 | 15787 | bfd_boolean skip, relocate; |
65f38f15 | 15788 | asection *sreloc; |
1cf1f670 | 15789 | bfd_vma out_off; |
82e66161 | 15790 | long indx = 0; |
65f38f15 AM |
15791 | |
15792 | /* When generating a dynamic object, these relocations | |
15793 | are copied into the output file to be resolved at run | |
15794 | time. */ | |
15795 | ||
b34976b6 AM |
15796 | skip = FALSE; |
15797 | relocate = FALSE; | |
65f38f15 | 15798 | |
1cf1f670 AM |
15799 | out_off = _bfd_elf_section_offset (output_bfd, info, |
15800 | input_section, rel->r_offset); | |
15801 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 15802 | skip = TRUE; |
1cf1f670 | 15803 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 15804 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
15805 | out_off += (input_section->output_section->vma |
15806 | + input_section->output_offset); | |
15807 | outrel.r_offset = out_off; | |
411e1bfb | 15808 | outrel.r_addend = rel->r_addend; |
65f38f15 | 15809 | |
1cf1f670 AM |
15810 | /* Optimize unaligned reloc use. */ |
15811 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
15812 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
15813 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
15814 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
15815 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
15816 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
15817 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
15818 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
15819 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
15820 | ||
65f38f15 | 15821 | if (skip) |
0bb2d96a | 15822 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 15823 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
15824 | && !is_opd |
15825 | && r_type != R_PPC64_TOC) | |
14acf4dc | 15826 | { |
82e66161 AM |
15827 | indx = h->elf.dynindx; |
15828 | BFD_ASSERT (indx != -1); | |
15829 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 15830 | } |
65f38f15 AM |
15831 | else |
15832 | { | |
41bd81ab AM |
15833 | /* This symbol is local, or marked to become local, |
15834 | or this is an opd section reloc which must point | |
15835 | at a local function. */ | |
65f38f15 | 15836 | outrel.r_addend += relocation; |
e86ce104 | 15837 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 15838 | { |
3fad3c7c | 15839 | if (is_opd && h != NULL) |
afbe61cf AM |
15840 | { |
15841 | /* Lie about opd entries. This case occurs | |
15842 | when building shared libraries and we | |
15843 | reference a function in another shared | |
3fad3c7c AM |
15844 | lib. The same thing happens for a weak |
15845 | definition in an application that's | |
15846 | overridden by a strong definition in a | |
15847 | shared lib. (I believe this is a generic | |
15848 | bug in binutils handling of weak syms.) | |
15849 | In these cases we won't use the opd | |
1e2f5b6e | 15850 | entry in this lib. */ |
b34976b6 | 15851 | unresolved_reloc = FALSE; |
afbe61cf | 15852 | } |
25f23106 AM |
15853 | if (!is_opd |
15854 | && r_type == R_PPC64_ADDR64 | |
15855 | && (h != NULL | |
15856 | ? h->elf.type == STT_GNU_IFUNC | |
15857 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
15858 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15859 | else | |
15860 | { | |
15861 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 15862 | |
25f23106 AM |
15863 | /* We need to relocate .opd contents for ld.so. |
15864 | Prelink also wants simple and consistent rules | |
15865 | for relocs. This make all RELATIVE relocs have | |
15866 | *r_offset equal to r_addend. */ | |
15867 | relocate = TRUE; | |
15868 | } | |
65f38f15 AM |
15869 | } |
15870 | else | |
15871 | { | |
25f23106 AM |
15872 | if (h != NULL |
15873 | ? h->elf.type == STT_GNU_IFUNC | |
15874 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15875 | { | |
25f53a85 | 15876 | info->callbacks->einfo |
695344c0 | 15877 | /* xgettext:c-format */ |
174d0a74 | 15878 | (_("%H: %s for indirect " |
c1c8c1ef | 15879 | "function `%pT' unsupported\n"), |
25f53a85 | 15880 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
15881 | ppc64_elf_howto_table[r_type]->name, |
15882 | sym_name); | |
15883 | ret = FALSE; | |
15884 | } | |
cf35638d | 15885 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
15886 | ; |
15887 | else if (sec == NULL || sec->owner == NULL) | |
15888 | { | |
15889 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 15890 | return FALSE; |
65f38f15 AM |
15891 | } |
15892 | else | |
15893 | { | |
15894 | asection *osec; | |
15895 | ||
15896 | osec = sec->output_section; | |
15897 | indx = elf_section_data (osec)->dynindx; | |
15898 | ||
74541ad4 AM |
15899 | if (indx == 0) |
15900 | { | |
15901 | if ((osec->flags & SEC_READONLY) == 0 | |
15902 | && htab->elf.data_index_section != NULL) | |
15903 | osec = htab->elf.data_index_section; | |
15904 | else | |
15905 | osec = htab->elf.text_index_section; | |
15906 | indx = elf_section_data (osec)->dynindx; | |
15907 | } | |
15908 | BFD_ASSERT (indx != 0); | |
15909 | ||
65f38f15 AM |
15910 | /* We are turning this relocation into one |
15911 | against a section symbol, so subtract out | |
15912 | the output section's address but not the | |
15913 | offset of the input section in the output | |
15914 | section. */ | |
15915 | outrel.r_addend -= osec->vma; | |
15916 | } | |
15917 | ||
15918 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
15919 | } | |
15920 | } | |
15921 | ||
15922 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
15923 | if (h != NULL |
15924 | ? h->elf.type == STT_GNU_IFUNC | |
15925 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
15926 | { |
15927 | sreloc = htab->elf.irelplt; | |
15928 | if (indx == 0) | |
15929 | htab->local_ifunc_resolver = 1; | |
15930 | else if (is_static_defined (&h->elf)) | |
15931 | htab->maybe_local_ifunc_resolver = 1; | |
15932 | } | |
65f38f15 AM |
15933 | if (sreloc == NULL) |
15934 | abort (); | |
15935 | ||
dfbb6ac9 AM |
15936 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
15937 | >= sreloc->size) | |
15938 | abort (); | |
947216bf AM |
15939 | loc = sreloc->contents; |
15940 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
15941 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
15942 | ||
15943 | /* If this reloc is against an external symbol, it will | |
15944 | be computed at runtime, so there's no need to do | |
81407a69 AM |
15945 | anything now. However, for the sake of prelink ensure |
15946 | that the section contents are a known value. */ | |
2cdcc330 | 15947 | if (!relocate) |
81407a69 AM |
15948 | { |
15949 | unresolved_reloc = FALSE; | |
15950 | /* The value chosen here is quite arbitrary as ld.so | |
15951 | ignores section contents except for the special | |
15952 | case of .opd where the contents might be accessed | |
15953 | before relocation. Choose zero, as that won't | |
15954 | cause reloc overflow. */ | |
15955 | relocation = 0; | |
15956 | addend = 0; | |
15957 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
15958 | to improve backward compatibility with older | |
15959 | versions of ld. */ | |
15960 | if (r_type == R_PPC64_ADDR64) | |
15961 | addend = outrel.r_addend; | |
15962 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 15963 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 15964 | addend = outrel.r_offset; |
81407a69 | 15965 | } |
65f38f15 | 15966 | } |
5bd4f169 AM |
15967 | break; |
15968 | ||
65f38f15 AM |
15969 | case R_PPC64_COPY: |
15970 | case R_PPC64_GLOB_DAT: | |
15971 | case R_PPC64_JMP_SLOT: | |
25f23106 | 15972 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
15973 | case R_PPC64_RELATIVE: |
15974 | /* We shouldn't ever see these dynamic relocs in relocatable | |
15975 | files. */ | |
ae9a127f | 15976 | /* Fall through. */ |
65f38f15 AM |
15977 | |
15978 | case R_PPC64_PLTGOT16: | |
15979 | case R_PPC64_PLTGOT16_DS: | |
15980 | case R_PPC64_PLTGOT16_HA: | |
15981 | case R_PPC64_PLTGOT16_HI: | |
15982 | case R_PPC64_PLTGOT16_LO: | |
15983 | case R_PPC64_PLTGOT16_LO_DS: | |
15984 | case R_PPC64_PLTREL32: | |
15985 | case R_PPC64_PLTREL64: | |
15986 | /* These ones haven't been implemented yet. */ | |
15987 | ||
25f53a85 | 15988 | info->callbacks->einfo |
695344c0 | 15989 | /* xgettext:c-format */ |
c1c8c1ef | 15990 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 15991 | input_bfd, |
4ce794b7 | 15992 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
15993 | |
15994 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 15995 | ret = FALSE; |
c316a17c | 15996 | goto copy_reloc; |
65f38f15 | 15997 | } |
5bd4f169 | 15998 | |
67f0cbdb AM |
15999 | /* Multi-instruction sequences that access the TOC can be |
16000 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16001 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16002 | switch (r_type) |
16003 | { | |
16004 | default: | |
16005 | break; | |
16006 | ||
16007 | case R_PPC64_GOT_TLSLD16_HI: | |
16008 | case R_PPC64_GOT_TLSGD16_HI: | |
16009 | case R_PPC64_GOT_TPREL16_HI: | |
16010 | case R_PPC64_GOT_DTPREL16_HI: | |
16011 | case R_PPC64_GOT16_HI: | |
16012 | case R_PPC64_TOC16_HI: | |
16013 | /* These relocs would only be useful if building up an | |
16014 | offset to later add to r2, perhaps in an indexed | |
16015 | addressing mode instruction. Don't try to optimize. | |
16016 | Unfortunately, the possibility of someone building up an | |
16017 | offset like this or even with the HA relocs, means that | |
16018 | we need to check the high insn when optimizing the low | |
16019 | insn. */ | |
16020 | break; | |
16021 | ||
5663e321 AM |
16022 | case R_PPC64_PLTCALL_NOTOC: |
16023 | if (!unresolved_reloc) | |
16024 | htab->notoc_plt = 1; | |
16025 | /* Fall through. */ | |
23cedd1d AM |
16026 | case R_PPC64_PLTCALL: |
16027 | if (unresolved_reloc) | |
16028 | { | |
16029 | /* No plt entry. Make this into a direct call. */ | |
16030 | bfd_byte *p = contents + rel->r_offset; | |
16031 | insn = bfd_get_32 (input_bfd, p); | |
16032 | insn &= 1; | |
16033 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
16034 | if (r_type == R_PPC64_PLTCALL) |
16035 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
16036 | unresolved_reloc = save_unresolved_reloc; |
16037 | r_type = R_PPC64_REL24; | |
16038 | } | |
16039 | break; | |
16040 | ||
5663e321 | 16041 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
16042 | case R_PPC64_PLTSEQ: |
16043 | if (unresolved_reloc) | |
16044 | { | |
16045 | unresolved_reloc = FALSE; | |
16046 | goto nop_it; | |
16047 | } | |
16048 | break; | |
16049 | ||
5663e321 AM |
16050 | case R_PPC64_PLT_PCREL34_NOTOC: |
16051 | if (!unresolved_reloc) | |
16052 | htab->notoc_plt = 1; | |
16053 | /* Fall through. */ | |
16054 | case R_PPC64_PLT_PCREL34: | |
16055 | if (unresolved_reloc) | |
16056 | { | |
16057 | bfd_byte *p = contents + rel->r_offset; | |
16058 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
16059 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
16060 | unresolved_reloc = FALSE; | |
16061 | goto copy_reloc; | |
16062 | } | |
16063 | break; | |
16064 | ||
23cedd1d AM |
16065 | case R_PPC64_PLT16_HA: |
16066 | if (unresolved_reloc) | |
16067 | { | |
16068 | unresolved_reloc = FALSE; | |
16069 | goto nop_it; | |
16070 | } | |
16071 | /* Fall through. */ | |
67f0cbdb AM |
16072 | case R_PPC64_GOT_TLSLD16_HA: |
16073 | case R_PPC64_GOT_TLSGD16_HA: | |
16074 | case R_PPC64_GOT_TPREL16_HA: | |
16075 | case R_PPC64_GOT_DTPREL16_HA: | |
16076 | case R_PPC64_GOT16_HA: | |
16077 | case R_PPC64_TOC16_HA: | |
98528052 | 16078 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16079 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 16080 | { |
23cedd1d AM |
16081 | bfd_byte *p; |
16082 | nop_it: | |
16083 | p = contents + (rel->r_offset & ~3); | |
98528052 | 16084 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 16085 | goto copy_reloc; |
98528052 | 16086 | } |
67f0cbdb AM |
16087 | break; |
16088 | ||
23cedd1d AM |
16089 | case R_PPC64_PLT16_LO: |
16090 | case R_PPC64_PLT16_LO_DS: | |
16091 | if (unresolved_reloc) | |
16092 | { | |
16093 | unresolved_reloc = FALSE; | |
16094 | goto nop_it; | |
16095 | } | |
16096 | /* Fall through. */ | |
67f0cbdb AM |
16097 | case R_PPC64_GOT_TLSLD16_LO: |
16098 | case R_PPC64_GOT_TLSGD16_LO: | |
16099 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16100 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16101 | case R_PPC64_GOT16_LO: | |
16102 | case R_PPC64_GOT16_LO_DS: | |
16103 | case R_PPC64_TOC16_LO: | |
16104 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 16105 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16106 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
16107 | { |
16108 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16109 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
16110 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
16111 | { | |
16112 | /* Transform addic to addi when we change reg. */ | |
16113 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
16114 | insn |= (14u << 26) | (2 << 16); | |
16115 | } | |
16116 | else | |
67f0cbdb | 16117 | { |
98528052 AM |
16118 | insn &= ~(0x1f << 16); |
16119 | insn |= 2 << 16; | |
67f0cbdb | 16120 | } |
560c8763 | 16121 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
16122 | } |
16123 | break; | |
9a23f96e AM |
16124 | |
16125 | case R_PPC64_TPREL16_HA: | |
16126 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16127 | { | |
16128 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16129 | insn = bfd_get_32 (input_bfd, p); | |
16130 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
16131 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
16132 | /* xgettext:c-format */ | |
16133 | info->callbacks->minfo | |
16134 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
16135 | input_bfd, input_section, rel->r_offset, |
16136 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 16137 | else |
d830549d AM |
16138 | { |
16139 | bfd_put_32 (input_bfd, NOP, p); | |
16140 | goto copy_reloc; | |
16141 | } | |
9a23f96e AM |
16142 | } |
16143 | break; | |
16144 | ||
16145 | case R_PPC64_TPREL16_LO: | |
16146 | case R_PPC64_TPREL16_LO_DS: | |
16147 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16148 | { | |
16149 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16150 | insn = bfd_get_32 (input_bfd, p); | |
16151 | insn &= ~(0x1f << 16); | |
16152 | insn |= 13 << 16; | |
16153 | bfd_put_32 (input_bfd, insn, p); | |
16154 | } | |
16155 | break; | |
67f0cbdb AM |
16156 | } |
16157 | ||
65f38f15 AM |
16158 | /* Do any further special processing. */ |
16159 | switch (r_type) | |
16160 | { | |
16161 | default: | |
16162 | break; | |
16163 | ||
25f23106 | 16164 | case R_PPC64_REL16_HA: |
4a969973 AM |
16165 | case R_PPC64_REL16_HIGHA: |
16166 | case R_PPC64_REL16_HIGHERA: | |
16167 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 16168 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
16169 | case R_PPC64_ADDR16_HA: |
16170 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16171 | case R_PPC64_ADDR16_HIGHERA: |
16172 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
16173 | case R_PPC64_TOC16_HA: |
16174 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 16175 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 16176 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 16177 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 16178 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
16179 | case R_PPC64_DTPREL16_HA: |
16180 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 16181 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 16182 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
16183 | /* It's just possible that this symbol is a weak symbol |
16184 | that's not actually defined anywhere. In that case, | |
16185 | 'sec' would be NULL, and we should leave the symbol | |
16186 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
16187 | if (sec == NULL) |
16188 | break; | |
1a0670f3 | 16189 | /* Fall through. */ |
5c5f6e17 AM |
16190 | |
16191 | case R_PPC64_GOT16_HA: | |
16192 | case R_PPC64_PLTGOT16_HA: | |
16193 | case R_PPC64_PLT16_HA: | |
16194 | case R_PPC64_GOT_TLSGD16_HA: | |
16195 | case R_PPC64_GOT_TLSLD16_HA: | |
16196 | case R_PPC64_GOT_TPREL16_HA: | |
16197 | case R_PPC64_GOT_DTPREL16_HA: | |
16198 | /* Add 0x10000 if sign bit in 0:15 is set. | |
16199 | Bits 0:15 are not used. */ | |
16200 | addend += 0x8000; | |
65f38f15 AM |
16201 | break; |
16202 | ||
5663e321 AM |
16203 | case R_PPC64_D34_HA30: |
16204 | case R_PPC64_ADDR16_HIGHERA34: | |
16205 | case R_PPC64_ADDR16_HIGHESTA34: | |
16206 | case R_PPC64_REL16_HIGHERA34: | |
16207 | case R_PPC64_REL16_HIGHESTA34: | |
16208 | if (sec != NULL) | |
16209 | addend += 1ULL << 33; | |
16210 | break; | |
16211 | ||
65f38f15 AM |
16212 | case R_PPC64_ADDR16_DS: |
16213 | case R_PPC64_ADDR16_LO_DS: | |
16214 | case R_PPC64_GOT16_DS: | |
16215 | case R_PPC64_GOT16_LO_DS: | |
16216 | case R_PPC64_PLT16_LO_DS: | |
16217 | case R_PPC64_SECTOFF_DS: | |
16218 | case R_PPC64_SECTOFF_LO_DS: | |
16219 | case R_PPC64_TOC16_DS: | |
16220 | case R_PPC64_TOC16_LO_DS: | |
16221 | case R_PPC64_PLTGOT16_DS: | |
16222 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
16223 | case R_PPC64_GOT_TPREL16_DS: |
16224 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16225 | case R_PPC64_GOT_DTPREL16_DS: | |
16226 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16227 | case R_PPC64_TPREL16_DS: | |
16228 | case R_PPC64_TPREL16_LO_DS: | |
16229 | case R_PPC64_DTPREL16_DS: | |
16230 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
16231 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
16232 | mask = 3; | |
a680de9a PB |
16233 | /* If this reloc is against an lq, lxv, or stxv insn, then |
16234 | the value must be a multiple of 16. This is somewhat of | |
16235 | a hack, but the "correct" way to do this by defining _DQ | |
16236 | forms of all the _DS relocs bloats all reloc switches in | |
16237 | this file. It doesn't make much sense to use these | |
16238 | relocs in data, so testing the insn should be safe. */ | |
16239 | if ((insn & (0x3f << 26)) == (56u << 26) | |
16240 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 16241 | mask = 15; |
a680de9a PB |
16242 | relocation += addend; |
16243 | addend = insn & (mask ^ 3); | |
16244 | if ((relocation & mask) != 0) | |
65f38f15 | 16245 | { |
a680de9a | 16246 | relocation ^= relocation & mask; |
25f53a85 | 16247 | info->callbacks->einfo |
695344c0 | 16248 | /* xgettext:c-format */ |
174d0a74 | 16249 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 16250 | input_bfd, input_section, rel->r_offset, |
d830549d | 16251 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 16252 | mask + 1); |
65f38f15 | 16253 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16254 | ret = FALSE; |
c316a17c | 16255 | goto copy_reloc; |
65f38f15 AM |
16256 | } |
16257 | break; | |
5bd4f169 AM |
16258 | } |
16259 | ||
239e1f3a AM |
16260 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
16261 | because such sections are not SEC_ALLOC and thus ld.so will | |
16262 | not process them. */ | |
d830549d | 16263 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 16264 | if (unresolved_reloc |
239e1f3a | 16265 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
16266 | && h->elf.def_dynamic) |
16267 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
16268 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 16269 | { |
25f53a85 | 16270 | info->callbacks->einfo |
695344c0 | 16271 | /* xgettext:c-format */ |
c1c8c1ef | 16272 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 16273 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 16274 | howto->name, |
039b3fef | 16275 | h->elf.root.root.string); |
b34976b6 | 16276 | ret = FALSE; |
9c07fe7c | 16277 | } |
5bd4f169 | 16278 | |
b80eed39 AM |
16279 | /* 16-bit fields in insns mostly have signed values, but a |
16280 | few insns have 16-bit unsigned values. Really, we should | |
16281 | have different reloc types. */ | |
16282 | if (howto->complain_on_overflow != complain_overflow_dont | |
16283 | && howto->dst_mask == 0xffff | |
16284 | && (input_section->flags & SEC_CODE) != 0) | |
16285 | { | |
16286 | enum complain_overflow complain = complain_overflow_signed; | |
16287 | ||
16288 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
16289 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
16290 | complain = complain_overflow_bitfield; | |
16291 | else if (howto->rightshift == 0 | |
16292 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
16293 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
16294 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
16295 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
16296 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
16297 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
16298 | complain = complain_overflow_unsigned; |
16299 | if (howto->complain_on_overflow != complain) | |
16300 | { | |
16301 | alt_howto = *howto; | |
16302 | alt_howto.complain_on_overflow = complain; | |
16303 | howto = &alt_howto; | |
16304 | } | |
16305 | } | |
16306 | ||
5663e321 | 16307 | switch (r_type) |
a680de9a | 16308 | { |
5663e321 AM |
16309 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
16310 | case R_PPC64_D34: | |
16311 | case R_PPC64_D34_LO: | |
16312 | case R_PPC64_D34_HI30: | |
16313 | case R_PPC64_D34_HA30: | |
16314 | case R_PPC64_PCREL34: | |
16315 | case R_PPC64_GOT_PCREL34: | |
16316 | case R_PPC64_PLT_PCREL34: | |
16317 | case R_PPC64_PLT_PCREL34_NOTOC: | |
16318 | case R_PPC64_D28: | |
16319 | case R_PPC64_PCREL28: | |
16320 | if (rel->r_offset + 8 > input_section->size) | |
16321 | r = bfd_reloc_outofrange; | |
16322 | else | |
16323 | { | |
5663e321 AM |
16324 | relocation += addend; |
16325 | if (howto->pc_relative) | |
16326 | relocation -= (rel->r_offset | |
16327 | + input_section->output_offset | |
16328 | + input_section->output_section->vma); | |
16329 | relocation >>= howto->rightshift; | |
16330 | ||
16331 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
16332 | pinsn <<= 32; | |
16333 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
16334 | ||
16335 | pinsn &= ~howto->dst_mask; | |
16336 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
16337 | & howto->dst_mask); | |
16338 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
16339 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
16340 | r = bfd_reloc_ok; | |
16341 | if (howto->complain_on_overflow == complain_overflow_signed | |
16342 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
16343 | >= 1ULL << howto->bitsize)) | |
16344 | r = bfd_reloc_overflow; | |
16345 | } | |
16346 | break; | |
16347 | ||
16348 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
16349 | if (rel->r_offset + 4 > input_section->size) |
16350 | r = bfd_reloc_outofrange; | |
16351 | else | |
16352 | { | |
16353 | relocation += addend; | |
16354 | relocation -= (rel->r_offset | |
16355 | + input_section->output_offset | |
16356 | + input_section->output_section->vma); | |
3de43e7b | 16357 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
16358 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
16359 | insn &= ~0x1fffc1; | |
3de43e7b | 16360 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
16361 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
16362 | r = bfd_reloc_ok; | |
3de43e7b | 16363 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
16364 | r = bfd_reloc_overflow; |
16365 | } | |
5663e321 AM |
16366 | break; |
16367 | ||
16368 | default: | |
16369 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
16370 | contents, rel->r_offset, | |
16371 | relocation, addend); | |
a680de9a | 16372 | } |
5bd4f169 | 16373 | |
ef60b7ff | 16374 | if (r != bfd_reloc_ok) |
5bd4f169 | 16375 | { |
bc30df16 | 16376 | char *more_info = NULL; |
b80eed39 | 16377 | const char *reloc_name = howto->name; |
bc30df16 AM |
16378 | |
16379 | if (reloc_dest != DEST_NORMAL) | |
16380 | { | |
16381 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
16382 | if (more_info != NULL) | |
16383 | { | |
16384 | strcpy (more_info, reloc_name); | |
16385 | strcat (more_info, (reloc_dest == DEST_OPD | |
16386 | ? " (OPD)" : " (stub)")); | |
16387 | reloc_name = more_info; | |
16388 | } | |
16389 | } | |
16390 | ||
cd27b276 | 16391 | if (r == bfd_reloc_overflow) |
5bd4f169 | 16392 | { |
8131c122 AM |
16393 | /* On code like "if (foo) foo();" don't report overflow |
16394 | on a branch to zero when foo is undefined. */ | |
16395 | if (!warned | |
16396 | && (reloc_dest == DEST_STUB | |
16397 | || !(h != NULL | |
16398 | && (h->elf.root.type == bfd_link_hash_undefweak | |
16399 | || h->elf.root.type == bfd_link_hash_undefined) | |
16400 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
16401 | info->callbacks->reloc_overflow (info, &h->elf.root, |
16402 | sym_name, reloc_name, | |
16403 | orig_rel.r_addend, | |
16404 | input_bfd, input_section, | |
16405 | rel->r_offset); | |
ef60b7ff AM |
16406 | } |
16407 | else | |
16408 | { | |
25f53a85 | 16409 | info->callbacks->einfo |
695344c0 | 16410 | /* xgettext:c-format */ |
c1c8c1ef | 16411 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 16412 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 16413 | reloc_name, sym_name, (int) r); |
b34976b6 | 16414 | ret = FALSE; |
ef60b7ff | 16415 | } |
bc30df16 AM |
16416 | if (more_info != NULL) |
16417 | free (more_info); | |
5bd4f169 | 16418 | } |
c316a17c AM |
16419 | copy_reloc: |
16420 | if (wrel != rel) | |
16421 | *wrel = *rel; | |
16422 | } | |
16423 | ||
16424 | if (wrel != rel) | |
16425 | { | |
16426 | Elf_Internal_Shdr *rel_hdr; | |
16427 | size_t deleted = rel - wrel; | |
16428 | ||
16429 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
16430 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
16431 | if (rel_hdr->sh_size == 0) | |
16432 | { | |
16433 | /* It is too late to remove an empty reloc section. Leave | |
16434 | one NONE reloc. | |
16435 | ??? What is wrong with an empty section??? */ | |
16436 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
16437 | deleted -= 1; | |
16438 | } | |
16439 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
16440 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
16441 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
16442 | } |
16443 | ||
645ea6a9 AM |
16444 | /* If we're emitting relocations, then shortly after this function |
16445 | returns, reloc offsets and addends for this section will be | |
16446 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
16447 | file rather than the input. Save a copy of the relocs for |
16448 | opd_entry_value. */ | |
0e1862bb | 16449 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
16450 | { |
16451 | bfd_size_type amt; | |
16452 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
16453 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
16454 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
16455 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
16456 | if (rel == NULL) |
16457 | return FALSE; | |
16458 | memcpy (rel, relocs, amt); | |
16459 | } | |
5bd4f169 AM |
16460 | return ret; |
16461 | } | |
16462 | ||
754021d0 AM |
16463 | /* Adjust the value of any local symbols in opd sections. */ |
16464 | ||
6e0b88f1 | 16465 | static int |
754021d0 AM |
16466 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
16467 | const char *name ATTRIBUTE_UNUSED, | |
16468 | Elf_Internal_Sym *elfsym, | |
16469 | asection *input_sec, | |
16470 | struct elf_link_hash_entry *h) | |
16471 | { | |
74f0fb50 AM |
16472 | struct _opd_sec_data *opd; |
16473 | long adjust; | |
754021d0 AM |
16474 | bfd_vma value; |
16475 | ||
4025353c | 16476 | if (h != NULL) |
6e0b88f1 | 16477 | return 1; |
4025353c | 16478 | |
74f0fb50 AM |
16479 | opd = get_opd_info (input_sec); |
16480 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 16481 | return 1; |
754021d0 AM |
16482 | |
16483 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 16484 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
16485 | value -= input_sec->output_section->vma; |
16486 | ||
51aecdc5 | 16487 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 16488 | if (adjust == -1) |
6e0b88f1 AM |
16489 | return 2; |
16490 | ||
16491 | elfsym->st_value += adjust; | |
16492 | return 1; | |
754021d0 AM |
16493 | } |
16494 | ||
5bd4f169 AM |
16495 | /* Finish up dynamic symbol handling. We set the contents of various |
16496 | dynamic sections here. */ | |
16497 | ||
b34976b6 | 16498 | static bfd_boolean |
4ce794b7 AM |
16499 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
16500 | struct bfd_link_info *info, | |
16501 | struct elf_link_hash_entry *h, | |
4aef7643 | 16502 | Elf_Internal_Sym *sym) |
5bd4f169 | 16503 | { |
65f38f15 | 16504 | struct ppc_link_hash_table *htab; |
8387904d | 16505 | struct plt_entry *ent; |
5bd4f169 | 16506 | |
65f38f15 | 16507 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16508 | if (htab == NULL) |
16509 | return FALSE; | |
5bd4f169 | 16510 | |
49c09209 AM |
16511 | if (!htab->opd_abi && !h->def_regular) |
16512 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
16513 | if (ent->plt.offset != (bfd_vma) -1) | |
16514 | { | |
16515 | /* Mark the symbol as undefined, rather than as | |
16516 | defined in glink. Leave the value if there were | |
16517 | any relocations where pointer equality matters | |
16518 | (this is a clue for the dynamic linker, to make | |
16519 | function pointer comparisons work between an | |
16520 | application and shared library), otherwise set it | |
16521 | to zero. */ | |
16522 | sym->st_shndx = SHN_UNDEF; | |
16523 | if (!h->pointer_equality_needed) | |
16524 | sym->st_value = 0; | |
16525 | else if (!h->ref_regular_nonweak) | |
16526 | { | |
16527 | /* This breaks function pointer comparisons, but | |
16528 | that is better than breaking tests for a NULL | |
16529 | function pointer. */ | |
16530 | sym->st_value = 0; | |
16531 | } | |
16532 | break; | |
16533 | } | |
5bd4f169 | 16534 | |
f5385ebf | 16535 | if (h->needs_copy) |
5bd4f169 | 16536 | { |
65f38f15 | 16537 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 16538 | Elf_Internal_Rela rela; |
5474d94f | 16539 | asection *srel; |
49c09209 | 16540 | bfd_byte *loc; |
5bd4f169 | 16541 | |
65f38f15 AM |
16542 | if (h->dynindx == -1 |
16543 | || (h->root.type != bfd_link_hash_defined | |
16544 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
16545 | || htab->elf.srelbss == NULL |
16546 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 16547 | abort (); |
5bd4f169 AM |
16548 | |
16549 | rela.r_offset = (h->root.u.def.value | |
16550 | + h->root.u.def.section->output_section->vma | |
16551 | + h->root.u.def.section->output_offset); | |
16552 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
16553 | rela.r_addend = 0; | |
afbf7e8e | 16554 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
16555 | srel = htab->elf.sreldynrelro; |
16556 | else | |
16557 | srel = htab->elf.srelbss; | |
16558 | loc = srel->contents; | |
16559 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 16560 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
16561 | } |
16562 | ||
b34976b6 | 16563 | return TRUE; |
5bd4f169 AM |
16564 | } |
16565 | ||
65f38f15 AM |
16566 | /* Used to decide how to sort relocs in an optimal manner for the |
16567 | dynamic linker, before writing them out. */ | |
16568 | ||
16569 | static enum elf_reloc_type_class | |
7e612e98 AM |
16570 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
16571 | const asection *rel_sec, | |
16572 | const Elf_Internal_Rela *rela) | |
65f38f15 | 16573 | { |
04c9666a | 16574 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
16575 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
16576 | ||
33e44f2e | 16577 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 16578 | return reloc_class_ifunc; |
a33d1f77 | 16579 | |
4ce794b7 | 16580 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 16581 | switch (r_type) |
65f38f15 AM |
16582 | { |
16583 | case R_PPC64_RELATIVE: | |
16584 | return reloc_class_relative; | |
16585 | case R_PPC64_JMP_SLOT: | |
16586 | return reloc_class_plt; | |
16587 | case R_PPC64_COPY: | |
16588 | return reloc_class_copy; | |
16589 | default: | |
16590 | return reloc_class_normal; | |
16591 | } | |
16592 | } | |
16593 | ||
5bd4f169 AM |
16594 | /* Finish up the dynamic sections. */ |
16595 | ||
b34976b6 | 16596 | static bfd_boolean |
4ce794b7 AM |
16597 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
16598 | struct bfd_link_info *info) | |
5bd4f169 | 16599 | { |
65f38f15 AM |
16600 | struct ppc_link_hash_table *htab; |
16601 | bfd *dynobj; | |
5bd4f169 | 16602 | asection *sdyn; |
5bd4f169 | 16603 | |
65f38f15 | 16604 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16605 | if (htab == NULL) |
16606 | return FALSE; | |
16607 | ||
65f38f15 | 16608 | dynobj = htab->elf.dynobj; |
3d4d4302 | 16609 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 16610 | |
65f38f15 | 16611 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 16612 | { |
5bd4f169 AM |
16613 | Elf64_External_Dyn *dyncon, *dynconend; |
16614 | ||
33e44f2e | 16615 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 16616 | abort (); |
5bd4f169 AM |
16617 | |
16618 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 16619 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
16620 | for (; dyncon < dynconend; dyncon++) |
16621 | { | |
16622 | Elf_Internal_Dyn dyn; | |
19397422 | 16623 | asection *s; |
5bd4f169 AM |
16624 | |
16625 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
16626 | ||
16627 | switch (dyn.d_tag) | |
16628 | { | |
65f38f15 AM |
16629 | default: |
16630 | continue; | |
5bd4f169 | 16631 | |
5d1634d7 | 16632 | case DT_PPC64_GLINK: |
4ce794b7 | 16633 | s = htab->glink; |
6348e046 | 16634 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
16635 | /* We stupidly defined DT_PPC64_GLINK to be the start |
16636 | of glink rather than the first entry point, which is | |
16637 | what ld.so needs, and now have a bigger stub to | |
16638 | support automatic multiple TOCs. */ | |
9e390558 | 16639 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
16640 | break; |
16641 | ||
19397422 AM |
16642 | case DT_PPC64_OPD: |
16643 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16644 | if (s == NULL) |
16645 | continue; | |
16646 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
16647 | break; |
16648 | ||
e8910a83 | 16649 | case DT_PPC64_OPT: |
5663e321 AM |
16650 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
16651 | || htab->notoc_plt) | |
e8910a83 | 16652 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
16653 | if (htab->has_plt_localentry0) |
16654 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
16655 | break; |
16656 | ||
19397422 AM |
16657 | case DT_PPC64_OPDSZ: |
16658 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16659 | if (s == NULL) |
16660 | continue; | |
eea6121a | 16661 | dyn.d_un.d_val = s->size; |
19397422 AM |
16662 | break; |
16663 | ||
65f38f15 | 16664 | case DT_PLTGOT: |
33e44f2e | 16665 | s = htab->elf.splt; |
6348e046 | 16666 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
16667 | break; |
16668 | ||
16669 | case DT_JMPREL: | |
33e44f2e | 16670 | s = htab->elf.srelplt; |
6348e046 | 16671 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 16672 | break; |
5bd4f169 | 16673 | |
65f38f15 | 16674 | case DT_PLTRELSZ: |
33e44f2e | 16675 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 16676 | break; |
82e66161 AM |
16677 | |
16678 | case DT_TEXTREL: | |
16679 | if (htab->local_ifunc_resolver) | |
16680 | info->callbacks->einfo | |
16681 | (_("%X%P: text relocations and GNU indirect " | |
16682 | "functions will result in a segfault at runtime\n")); | |
16683 | else if (htab->maybe_local_ifunc_resolver) | |
16684 | info->callbacks->einfo | |
16685 | (_("%P: warning: text relocations and GNU indirect " | |
16686 | "functions may result in a segfault at runtime\n")); | |
16687 | continue; | |
5bd4f169 | 16688 | } |
5bd4f169 | 16689 | |
65f38f15 | 16690 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 16691 | } |
5bd4f169 AM |
16692 | } |
16693 | ||
6528b6eb AM |
16694 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
16695 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16696 | { |
16697 | /* Fill in the first entry in the global offset table. | |
16698 | We use it to hold the link-time TOCbase. */ | |
16699 | bfd_put_64 (output_bfd, | |
60ee0d4a | 16700 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 16701 | htab->elf.sgot->contents); |
5d1634d7 AM |
16702 | |
16703 | /* Set .got entry size. */ | |
2cdcc330 AM |
16704 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
16705 | = 8; | |
5d1634d7 AM |
16706 | } |
16707 | ||
6528b6eb AM |
16708 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
16709 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16710 | { |
16711 | /* Set .plt entry size. */ | |
33e44f2e | 16712 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 16713 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
16714 | } |
16715 | ||
84f5d08e AM |
16716 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
16717 | brlt ourselves if emitrelocations. */ | |
16718 | if (htab->brlt != NULL | |
16719 | && htab->brlt->reloc_count != 0 | |
16720 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16721 | htab->brlt, | |
d4730f92 | 16722 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
16723 | elf_section_data (htab->brlt)->relocs, |
16724 | NULL)) | |
16725 | return FALSE; | |
16726 | ||
176a0d42 AM |
16727 | if (htab->glink != NULL |
16728 | && htab->glink->reloc_count != 0 | |
16729 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16730 | htab->glink, | |
d4730f92 | 16731 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
16732 | elf_section_data (htab->glink)->relocs, |
16733 | NULL)) | |
16734 | return FALSE; | |
16735 | ||
da44f4e5 | 16736 | |
df136d64 AM |
16737 | if (htab->glink_eh_frame != NULL |
16738 | && htab->glink_eh_frame->size != 0 | |
16739 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
16740 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
16741 | htab->glink_eh_frame, | |
16742 | htab->glink_eh_frame->contents)) | |
16743 | return FALSE; | |
58d180e8 | 16744 | |
e717da7e | 16745 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
16746 | since we didn't add them to DYNOBJ. We know dynobj is the first |
16747 | bfd. */ | |
c72f2fb2 | 16748 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
16749 | { |
16750 | asection *s; | |
7b53ace3 | 16751 | |
0c8d6e5c | 16752 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
16753 | continue; |
16754 | ||
e717da7e AM |
16755 | s = ppc64_elf_tdata (dynobj)->got; |
16756 | if (s != NULL | |
eea6121a | 16757 | && s->size != 0 |
e717da7e AM |
16758 | && s->output_section != bfd_abs_section_ptr |
16759 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16760 | s->contents, s->output_offset, | |
eea6121a | 16761 | s->size)) |
e717da7e AM |
16762 | return FALSE; |
16763 | s = ppc64_elf_tdata (dynobj)->relgot; | |
16764 | if (s != NULL | |
eea6121a | 16765 | && s->size != 0 |
e717da7e AM |
16766 | && s->output_section != bfd_abs_section_ptr |
16767 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16768 | s->contents, s->output_offset, | |
eea6121a | 16769 | s->size)) |
e717da7e AM |
16770 | return FALSE; |
16771 | } | |
f6c52c13 | 16772 | |
b34976b6 | 16773 | return TRUE; |
5bd4f169 AM |
16774 | } |
16775 | ||
5bd4f169 | 16776 | #include "elf64-target.h" |
7b8e7dad AM |
16777 | |
16778 | /* FreeBSD support */ | |
16779 | ||
16780 | #undef TARGET_LITTLE_SYM | |
16781 | #undef TARGET_LITTLE_NAME | |
16782 | ||
16783 | #undef TARGET_BIG_SYM | |
6d00b590 | 16784 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
16785 | #undef TARGET_BIG_NAME |
16786 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
16787 | ||
16788 | #undef ELF_OSABI | |
16789 | #define ELF_OSABI ELFOSABI_FREEBSD | |
16790 | ||
16791 | #undef elf64_bed | |
16792 | #define elf64_bed elf64_powerpc_fbsd_bed | |
16793 | ||
16794 | #include "elf64-target.h" |