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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 | |
07d6d2b8 | 190 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
05d0e962 | 191 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
192 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
193 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 194 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 195 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 AM |
196 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
197 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ | |
07d6d2b8 | 198 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
05d0e962 AM |
199 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
200 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
201 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
5663e321 | 202 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 203 | |
9e390558 AM |
204 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
205 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 206 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
207 | /* 0: */ |
208 | /* .quad plt0-1f */ | |
209 | /* __glink: */ | |
210 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
211 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
212 | /* 1: */ | |
213 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 214 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 215 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
216 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
217 | /* ld %12,0(%11) */ | |
218 | /* ld %2,8(%11) */ | |
219 | /* mtctr %12 */ | |
220 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 221 | /* bctr */ |
b9e5796b AM |
222 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
223 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
224 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
225 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
226 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
227 | |
228 | /* Pad with this. */ | |
229 | #define NOP 0x60000000 | |
230 | ||
721956f4 AM |
231 | /* Some other nops. */ |
232 | #define CROR_151515 0x4def7b82 | |
233 | #define CROR_313131 0x4ffffb82 | |
234 | ||
cedb70c5 | 235 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
236 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
237 | #define B_DOT 0x48000000 /* b . */ | |
238 | ||
239 | /* After that, we need two instructions to load the index, followed by | |
240 | a branch. */ | |
241 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 242 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 243 | |
deb0e272 AM |
244 | /* Instructions used by the save and restore reg functions. */ |
245 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
246 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
247 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
248 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
249 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
250 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
251 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
252 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
253 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
254 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
255 | #define BLR 0x4e800020 /* blr */ |
256 | ||
41bd81ab AM |
257 | /* Since .opd is an array of descriptors and each entry will end up |
258 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
259 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 260 | relocate .opd without reloc entries. */ |
41bd81ab AM |
261 | #ifndef NO_OPD_RELOCS |
262 | #define NO_OPD_RELOCS 0 | |
263 | #endif | |
810d4e75 | 264 | |
a4b6fadd AM |
265 | #ifndef ARRAY_SIZE |
266 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
267 | #endif | |
268 | ||
810d4e75 AM |
269 | static inline int |
270 | abiversion (bfd *abfd) | |
271 | { | |
272 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
273 | } | |
274 | ||
275 | static inline void | |
276 | set_abiversion (bfd *abfd, int ver) | |
277 | { | |
278 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
279 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
280 | } | |
5bd4f169 AM |
281 | \f |
282 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
283 | /* Like other ELF RELA targets that don't apply multiple |
284 | field-altering relocations to the same localation, src_mask is | |
285 | always zero and pcrel_offset is the same as pc_relative. | |
286 | PowerPC can always use a zero bitpos, even when the field is not at | |
287 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
288 | and bitpos=2 which matches the ABI description, or as we do here, | |
289 | rightshift=0, bitsize=26 and bitpos=0. */ | |
290 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
291 | complain, special_func) \ | |
292 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
293 | complain_overflow_ ## complain, special_func, \ | |
294 | #type, FALSE, 0, mask, pc_relative) | |
295 | ||
04c9666a | 296 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 297 | |
f3185997 NC |
298 | static reloc_howto_type ppc64_elf_howto_raw[] = |
299 | { | |
5bd4f169 | 300 | /* This reloc does nothing. */ |
46807bf4 AM |
301 | HOW (R_PPC64_NONE, 3, 0, 0, 0, FALSE, dont, |
302 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
303 | |
304 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
305 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
306 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
307 | |
308 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
309 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
310 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, FALSE, bitfield, |
311 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
312 | |
313 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
314 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
315 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
316 | |
317 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
318 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
319 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
320 | |
321 | /* Bits 16-31 of an address. */ | |
46807bf4 AM |
322 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
323 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
324 | |
325 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
326 | bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
327 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
328 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
329 | |
330 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
331 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
332 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, FALSE, signed, |
333 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
334 | |
335 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
336 | indicate that the branch is expected to be taken. The lower two | |
337 | bits must be zero. */ | |
46807bf4 AM |
338 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
339 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
340 | |
341 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
342 | indicate that the branch is not expected to be taken. The lower | |
343 | two bits must be zero. */ | |
46807bf4 AM |
344 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
345 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
346 | |
347 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
46807bf4 AM |
348 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, TRUE, signed, |
349 | ppc64_elf_branch_reloc), | |
5bd4f169 | 350 | |
05d0e962 | 351 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
46807bf4 AM |
352 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, TRUE, signed, |
353 | ppc64_elf_branch_reloc), | |
05d0e962 | 354 | |
5bd4f169 | 355 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
356 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, TRUE, signed, |
357 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
358 | |
359 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
360 | the branch is expected to be taken. The lower two bits must be | |
361 | zero. */ | |
46807bf4 AM |
362 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
363 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
364 | |
365 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
366 | the branch is not expected to be taken. The lower two bits must | |
367 | be zero. */ | |
46807bf4 AM |
368 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
369 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
370 | |
371 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
372 | symbol. */ | |
46807bf4 AM |
373 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
374 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
375 | |
376 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
377 | the symbol. */ | |
46807bf4 AM |
378 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
379 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
380 | |
381 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
382 | the symbol. */ | |
46807bf4 AM |
383 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
384 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
385 | |
386 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
387 | the symbol. */ | |
46807bf4 AM |
388 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
389 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
390 | |
391 | /* This is used only by the dynamic linker. The symbol should exist | |
392 | both in the object being run and in some shared library. The | |
393 | dynamic linker copies the data addressed by the symbol from the | |
394 | shared library into the object, because the object being | |
395 | run has to have the data at some particular address. */ | |
46807bf4 AM |
396 | HOW (R_PPC64_COPY, 0, 0, 0, 0, FALSE, dont, |
397 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
398 | |
399 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
400 | entries. */ | |
46807bf4 AM |
401 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
402 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
403 | |
404 | /* Created by the link editor. Marks a procedure linkage table | |
405 | entry for a symbol. */ | |
46807bf4 AM |
406 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, FALSE, dont, |
407 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
408 | |
409 | /* Used only by the dynamic linker. When the object is run, this | |
410 | doubleword64 is set to the load address of the object, plus the | |
411 | addend. */ | |
46807bf4 AM |
412 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
413 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
414 | |
415 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
416 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
417 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
418 | |
419 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
420 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
421 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
422 | |
423 | /* 32-bit PC relative. */ | |
46807bf4 AM |
424 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
425 | bfd_elf_generic_reloc), | |
5bd4f169 | 426 | |
10ed1bba | 427 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
428 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
429 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
430 | |
431 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
432 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
46807bf4 AM |
433 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
434 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
435 | |
436 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
437 | the symbol. */ | |
46807bf4 AM |
438 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
439 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
440 | |
441 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
442 | the symbol. */ | |
46807bf4 AM |
443 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
444 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
445 | |
446 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
447 | the symbol. */ | |
46807bf4 AM |
448 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
449 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 450 | |
c061c2d8 | 451 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
452 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
453 | ppc64_elf_sectoff_reloc), | |
5bd4f169 | 454 | |
c061c2d8 | 455 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
46807bf4 AM |
456 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
457 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
458 | |
459 | /* 16-bit upper half section relative relocation. */ | |
46807bf4 AM |
460 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, signed, |
461 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
462 | |
463 | /* 16-bit upper half adjusted section relative relocation. */ | |
46807bf4 AM |
464 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, signed, |
465 | ppc64_elf_sectoff_ha_reloc), | |
5bd4f169 | 466 | |
04c9666a | 467 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
46807bf4 AM |
468 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, TRUE, dont, |
469 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
470 | |
471 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
472 | ||
473 | /* A standard 64-bit relocation. */ | |
46807bf4 AM |
474 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
475 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
476 | |
477 | /* The bits 32-47 of an address. */ | |
46807bf4 AM |
478 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
479 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
480 | |
481 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
482 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
483 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
484 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
485 | |
486 | /* The bits 48-63 of an address. */ | |
46807bf4 AM |
487 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
488 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
489 | |
490 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
491 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
492 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
493 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
494 | |
495 | /* Like ADDR64, but may be unaligned. */ | |
46807bf4 AM |
496 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
497 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
498 | |
499 | /* 64-bit relative relocation. */ | |
46807bf4 AM |
500 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
501 | bfd_elf_generic_reloc), | |
5bd4f169 | 502 | |
cedb70c5 | 503 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
504 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
505 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
506 | |
507 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
508 | table. */ | |
509 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
46807bf4 AM |
510 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
511 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
512 | |
513 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 514 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
46807bf4 AM |
515 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
516 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
517 | |
518 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 519 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
46807bf4 AM |
520 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
521 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
522 | |
523 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 524 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
46807bf4 AM |
525 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
526 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
527 | |
528 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
529 | contents of the low 16 bits, treated as a signed number, is | |
530 | negative. */ | |
5bd4f169 | 531 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
46807bf4 AM |
532 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
533 | ppc64_elf_toc_ha_reloc), | |
5bd4f169 AM |
534 | |
535 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 536 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
46807bf4 AM |
537 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
538 | ppc64_elf_toc64_reloc), | |
5bd4f169 AM |
539 | |
540 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
541 | value to relocate may (!) refer to a PLT entry which the link | |
542 | editor (a) may replace with the symbol value. If the link editor | |
543 | is unable to fully resolve the symbol, it may (b) create a PLT | |
544 | entry and store the address to the new PLT entry in the GOT. | |
545 | This permits lazy resolution of function symbols at run time. | |
546 | The link editor may also skip all of this and just (c) emit a | |
547 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
548 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
46807bf4 AM |
549 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, FALSE,signed, |
550 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
551 | |
552 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
553 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
554 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
555 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
556 | |
557 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
558 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
46807bf4 AM |
559 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
560 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
561 | |
562 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
563 | 1 if the contents of the low 16 bits, treated as a signed number, | |
564 | is negative. */ | |
565 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
46807bf4 AM |
566 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
567 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
568 | |
569 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
46807bf4 AM |
570 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
571 | bfd_elf_generic_reloc), | |
411e1bfb AM |
572 | |
573 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
574 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
575 | bfd_elf_generic_reloc), | |
411e1bfb AM |
576 | |
577 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
46807bf4 AM |
578 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
579 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
580 | |
581 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
582 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
583 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
584 | |
585 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
586 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
587 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
588 | |
589 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
46807bf4 AM |
590 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
591 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
592 | |
593 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
594 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
595 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
596 | |
597 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
46807bf4 AM |
598 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
599 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
600 | |
601 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
602 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
603 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
604 | |
605 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
606 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
46807bf4 AM |
607 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
608 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
609 | |
610 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
611 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
612 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
613 | ppc64_elf_unhandled_reloc), | |
411e1bfb | 614 | |
727fc41e | 615 | /* Marker relocs for TLS. */ |
46807bf4 AM |
616 | HOW (R_PPC64_TLS, 2, 32, 0, 0, FALSE, dont, |
617 | bfd_elf_generic_reloc), | |
618 | ||
619 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
620 | bfd_elf_generic_reloc), | |
621 | ||
622 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
623 | bfd_elf_generic_reloc), | |
727fc41e | 624 | |
23cedd1d AM |
625 | /* Marker reloc for optimizing r2 save in prologue rather than on |
626 | each plt call stub. */ | |
46807bf4 AM |
627 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, FALSE, dont, |
628 | bfd_elf_generic_reloc), | |
3b421ab3 | 629 | |
23cedd1d | 630 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
631 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
632 | bfd_elf_generic_reloc), | |
633 | ||
634 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
635 | bfd_elf_generic_reloc), | |
23cedd1d | 636 | |
411e1bfb AM |
637 | /* Computes the load module index of the load module that contains the |
638 | definition of its TLS sym. */ | |
46807bf4 AM |
639 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
640 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
641 | |
642 | /* Computes a dtv-relative displacement, the difference between the value | |
643 | of sym+add and the base address of the thread-local storage block that | |
644 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
645 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
646 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
647 | |
648 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
649 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
650 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
651 | |
652 | /* Like DTPREL16, but no overflow. */ | |
46807bf4 AM |
653 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
654 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
655 | |
656 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
657 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
658 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
659 | |
660 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
661 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
662 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
663 | |
664 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
665 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
666 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
667 | |
668 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
669 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
670 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
671 | |
672 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
673 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
674 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
675 | |
676 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
677 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
678 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
679 | |
680 | /* Like DTPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
681 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
682 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
683 | |
684 | /* Like DTPREL16_DS, but no overflow. */ | |
46807bf4 AM |
685 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
686 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
687 | |
688 | /* Computes a tp-relative displacement, the difference between the value of | |
689 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
690 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
691 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
692 | |
693 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
694 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
695 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
696 | |
697 | /* Like TPREL16, but no overflow. */ | |
46807bf4 AM |
698 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
699 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
700 | |
701 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
702 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
703 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
704 | |
705 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
706 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
707 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
708 | |
709 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
710 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
711 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
712 | |
713 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
714 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
715 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
716 | |
717 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
718 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
719 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
720 | |
721 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
722 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
723 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
724 | |
725 | /* Like TPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
726 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
727 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
728 | |
729 | /* Like TPREL16_DS, but no overflow. */ | |
46807bf4 AM |
730 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
731 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
732 | |
733 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
734 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
735 | to the first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
736 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
737 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 738 | |
411e1bfb | 739 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
740 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
741 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 742 | |
411e1bfb | 743 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
744 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
745 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 746 | |
411e1bfb | 747 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
748 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
749 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 750 | |
411e1bfb AM |
751 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
752 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
753 | first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
754 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
755 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 756 | |
411e1bfb | 757 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
758 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
759 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 760 | |
411e1bfb | 761 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
762 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
763 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 764 | |
411e1bfb | 765 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
766 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
767 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 768 | |
411e1bfb AM |
769 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
770 | the offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
771 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
772 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 773 | |
411e1bfb | 774 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
46807bf4 AM |
775 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
776 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 777 | |
411e1bfb | 778 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
779 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
780 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 781 | |
411e1bfb | 782 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
783 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
784 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
785 | |
786 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
787 | offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
788 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
789 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 790 | |
411e1bfb | 791 | /* Like GOT_TPREL16_DS, but no overflow. */ |
46807bf4 AM |
792 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
793 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 794 | |
411e1bfb | 795 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
796 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
797 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 798 | |
411e1bfb | 799 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
800 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
801 | ppc64_elf_unhandled_reloc), | |
802 | ||
803 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, FALSE, dont, | |
804 | ppc64_elf_unhandled_reloc), | |
805 | ||
806 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, | |
807 | bfd_elf_generic_reloc), | |
e054468f | 808 | |
25f23106 | 809 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
810 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
811 | bfd_elf_generic_reloc), | |
25f23106 AM |
812 | |
813 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
814 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
815 | bfd_elf_generic_reloc), | |
25f23106 AM |
816 | |
817 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
818 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, TRUE, signed, |
819 | bfd_elf_generic_reloc), | |
25f23106 AM |
820 | |
821 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
822 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
823 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, TRUE, signed, |
824 | ppc64_elf_ha_reloc), | |
25f23106 | 825 | |
4a969973 AM |
826 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, TRUE, dont, |
827 | bfd_elf_generic_reloc), | |
828 | ||
829 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, TRUE, dont, | |
830 | ppc64_elf_ha_reloc), | |
831 | ||
832 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, TRUE, dont, | |
833 | bfd_elf_generic_reloc), | |
834 | ||
835 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, TRUE, dont, | |
836 | ppc64_elf_ha_reloc), | |
837 | ||
838 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, TRUE, dont, | |
839 | bfd_elf_generic_reloc), | |
840 | ||
841 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, TRUE, dont, | |
842 | ppc64_elf_ha_reloc), | |
843 | ||
a680de9a | 844 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
845 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
846 | ppc64_elf_ha_reloc), | |
a680de9a | 847 | |
7ba71655 | 848 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
849 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
850 | ppc64_elf_ha_reloc), | |
7ba71655 | 851 | |
f9c6b907 | 852 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
853 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
854 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
855 | |
856 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
857 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
858 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
859 | |
860 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
861 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
862 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
863 | |
864 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
865 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
866 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
867 | |
868 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
869 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
870 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
871 | |
872 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
873 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
874 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 875 | |
006589cf | 876 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
877 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
878 | bfd_elf_generic_reloc), | |
006589cf | 879 | |
45965137 | 880 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
881 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
882 | bfd_elf_generic_reloc), | |
45965137 | 883 | |
5663e321 AM |
884 | HOW (R_PPC64_PLTSEQ_NOTOC, 2, 32, 0, 0, FALSE, dont, |
885 | bfd_elf_generic_reloc), | |
886 | ||
887 | HOW (R_PPC64_PLTCALL_NOTOC, 2, 32, 0, 0, FALSE, dont, | |
888 | bfd_elf_generic_reloc), | |
889 | ||
890 | HOW (R_PPC64_PCREL_OPT, 2, 32, 0, 0, FALSE, dont, | |
891 | bfd_elf_generic_reloc), | |
892 | ||
893 | HOW (R_PPC64_D34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
894 | ppc64_elf_prefix_reloc), | |
895 | ||
896 | HOW (R_PPC64_D34_LO, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, dont, | |
897 | ppc64_elf_prefix_reloc), | |
898 | ||
899 | HOW (R_PPC64_D34_HI30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
900 | ppc64_elf_prefix_reloc), | |
901 | ||
902 | HOW (R_PPC64_D34_HA30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
903 | ppc64_elf_prefix_reloc), | |
904 | ||
905 | HOW (R_PPC64_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
906 | ppc64_elf_prefix_reloc), | |
907 | ||
908 | HOW (R_PPC64_GOT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
909 | ppc64_elf_unhandled_reloc), | |
910 | ||
911 | HOW (R_PPC64_PLT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
912 | ppc64_elf_unhandled_reloc), | |
913 | ||
914 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
915 | ppc64_elf_unhandled_reloc), | |
916 | ||
917 | HOW (R_PPC64_ADDR16_HIGHER34, 1, 16, 0xffff, 34, FALSE, dont, | |
918 | bfd_elf_generic_reloc), | |
919 | ||
920 | HOW (R_PPC64_ADDR16_HIGHERA34, 1, 16, 0xffff, 34, FALSE, dont, | |
921 | ppc64_elf_ha_reloc), | |
922 | ||
923 | HOW (R_PPC64_ADDR16_HIGHEST34, 1, 16, 0xffff, 50, FALSE, dont, | |
924 | bfd_elf_generic_reloc), | |
925 | ||
926 | HOW (R_PPC64_ADDR16_HIGHESTA34, 1, 16, 0xffff, 50, FALSE, dont, | |
927 | ppc64_elf_ha_reloc), | |
928 | ||
929 | HOW (R_PPC64_REL16_HIGHER34, 1, 16, 0xffff, 34, TRUE, dont, | |
930 | bfd_elf_generic_reloc), | |
931 | ||
932 | HOW (R_PPC64_REL16_HIGHERA34, 1, 16, 0xffff, 34, TRUE, dont, | |
933 | ppc64_elf_ha_reloc), | |
934 | ||
935 | HOW (R_PPC64_REL16_HIGHEST34, 1, 16, 0xffff, 50, TRUE, dont, | |
936 | bfd_elf_generic_reloc), | |
937 | ||
938 | HOW (R_PPC64_REL16_HIGHESTA34, 1, 16, 0xffff, 50, TRUE, dont, | |
939 | ppc64_elf_ha_reloc), | |
940 | ||
941 | HOW (R_PPC64_D28, 4, 28, 0xfff0000ffffULL, 0, FALSE, signed, | |
942 | ppc64_elf_prefix_reloc), | |
943 | ||
944 | HOW (R_PPC64_PCREL28, 4, 28, 0xfff0000ffffULL, 0, TRUE, signed, | |
945 | ppc64_elf_prefix_reloc), | |
946 | ||
5bd4f169 | 947 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
948 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
949 | NULL), | |
5bd4f169 AM |
950 | |
951 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
952 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
953 | NULL), | |
5bd4f169 AM |
954 | }; |
955 | ||
956 | \f | |
957 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
958 | be done. */ | |
959 | ||
960 | static void | |
4ce794b7 | 961 | ppc_howto_init (void) |
5bd4f169 AM |
962 | { |
963 | unsigned int i, type; | |
964 | ||
a4b6fadd | 965 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
966 | { |
967 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 968 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
969 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
970 | } | |
971 | } | |
972 | ||
973 | static reloc_howto_type * | |
f3185997 | 974 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 975 | bfd_reloc_code_real_type code) |
5bd4f169 | 976 | { |
411e1bfb | 977 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
978 | |
979 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
980 | /* Initialize howto table if needed. */ | |
981 | ppc_howto_init (); | |
982 | ||
4ce794b7 | 983 | switch (code) |
5bd4f169 AM |
984 | { |
985 | default: | |
f3185997 | 986 | /* xgettext:c-format */ |
2cdcc330 AM |
987 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
988 | (int) code); | |
f3185997 | 989 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 990 | return NULL; |
5bd4f169 | 991 | |
411e1bfb AM |
992 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
993 | break; | |
994 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
995 | break; | |
996 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
997 | break; | |
998 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
999 | break; | |
1000 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1001 | break; | |
1002 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1003 | break; | |
f9c6b907 AM |
1004 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
1005 | break; | |
411e1bfb | 1006 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 1007 | break; |
f9c6b907 AM |
1008 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
1009 | break; | |
411e1bfb | 1010 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1011 | break; |
411e1bfb | 1012 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1013 | break; |
411e1bfb | 1014 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1015 | break; |
411e1bfb | 1016 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1017 | break; |
05d0e962 AM |
1018 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
1019 | break; | |
411e1bfb | 1020 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1021 | break; |
411e1bfb | 1022 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1023 | break; |
411e1bfb | 1024 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1025 | break; |
411e1bfb | 1026 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1027 | break; |
411e1bfb | 1028 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1029 | break; |
411e1bfb | 1030 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1031 | break; |
411e1bfb | 1032 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1033 | break; |
411e1bfb | 1034 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1035 | break; |
411e1bfb | 1036 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1037 | break; |
411e1bfb | 1038 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1039 | break; |
411e1bfb | 1040 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1041 | break; |
411e1bfb | 1042 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1043 | break; |
411e1bfb | 1044 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1045 | break; |
411e1bfb | 1046 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1047 | break; |
411e1bfb | 1048 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1049 | break; |
411e1bfb | 1050 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1051 | break; |
411e1bfb | 1052 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1053 | break; |
411e1bfb | 1054 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1055 | break; |
411e1bfb | 1056 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1057 | break; |
411e1bfb | 1058 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1059 | break; |
411e1bfb | 1060 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1061 | break; |
411e1bfb | 1062 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1063 | break; |
411e1bfb | 1064 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1065 | break; |
411e1bfb | 1066 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1067 | break; |
411e1bfb | 1068 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1069 | break; |
411e1bfb | 1070 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1071 | break; |
411e1bfb | 1072 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1073 | break; |
411e1bfb | 1074 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1075 | break; |
411e1bfb | 1076 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1077 | break; |
411e1bfb | 1078 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1079 | break; |
411e1bfb | 1080 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1081 | break; |
411e1bfb | 1082 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1083 | break; |
411e1bfb | 1084 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1085 | break; |
411e1bfb | 1086 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1087 | break; |
411e1bfb | 1088 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1089 | break; |
411e1bfb | 1090 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1091 | break; |
411e1bfb | 1092 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1093 | break; |
411e1bfb | 1094 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1095 | break; |
411e1bfb | 1096 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1097 | break; |
411e1bfb | 1098 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1099 | break; |
411e1bfb | 1100 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1101 | break; |
411e1bfb | 1102 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1103 | break; |
411e1bfb | 1104 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1105 | break; |
411e1bfb | 1106 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1107 | break; |
411e1bfb | 1108 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1109 | break; |
411e1bfb | 1110 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1111 | break; |
411e1bfb | 1112 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1113 | break; |
411e1bfb | 1114 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1115 | break; |
411e1bfb | 1116 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1117 | break; |
727fc41e AM |
1118 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1119 | break; | |
1120 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1121 | break; | |
411e1bfb | 1122 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1123 | break; |
411e1bfb | 1124 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1125 | break; |
411e1bfb | 1126 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1127 | break; |
411e1bfb | 1128 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1129 | break; |
f9c6b907 AM |
1130 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1131 | break; | |
411e1bfb | 1132 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1133 | break; |
f9c6b907 AM |
1134 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1135 | break; | |
411e1bfb | 1136 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1137 | break; |
411e1bfb AM |
1138 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1139 | break; | |
1140 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1141 | break; | |
1142 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1143 | break; | |
f9c6b907 AM |
1144 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1145 | break; | |
411e1bfb AM |
1146 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1147 | break; | |
f9c6b907 AM |
1148 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1149 | break; | |
411e1bfb AM |
1150 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1151 | break; | |
1152 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1153 | break; | |
1154 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1155 | break; | |
1156 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1157 | break; | |
1158 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1159 | break; | |
1160 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1161 | break; | |
1162 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1163 | break; | |
1164 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1165 | break; | |
1166 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1167 | break; | |
1168 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1169 | break; | |
1170 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1171 | break; | |
1172 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1173 | break; | |
1174 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1175 | break; | |
1176 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1177 | break; | |
1178 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1179 | break; | |
1180 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1181 | break; | |
1182 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1183 | break; | |
1184 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1185 | break; | |
1186 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1187 | break; | |
1188 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1189 | break; | |
1190 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1191 | break; | |
1192 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1193 | break; | |
1194 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1195 | break; | |
1196 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1197 | break; | |
1198 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1199 | break; | |
1200 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1201 | break; | |
1202 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1203 | break; | |
1204 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1205 | break; | |
1206 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1207 | break; | |
25f23106 AM |
1208 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1209 | break; | |
1210 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1211 | break; | |
1212 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1213 | break; | |
1214 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1215 | break; | |
4a969973 AM |
1216 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1217 | break; | |
1218 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1219 | break; | |
1220 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1221 | break; | |
1222 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1223 | break; | |
1224 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1225 | break; | |
1226 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1227 | break; | |
7ba71655 AM |
1228 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1229 | break; | |
a680de9a PB |
1230 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1231 | break; | |
006589cf AM |
1232 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1233 | break; | |
45965137 AM |
1234 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1235 | break; | |
5663e321 AM |
1236 | case BFD_RELOC_PPC64_D34: r = R_PPC64_D34; |
1237 | break; | |
1238 | case BFD_RELOC_PPC64_D34_LO: r = R_PPC64_D34_LO; | |
1239 | break; | |
1240 | case BFD_RELOC_PPC64_D34_HI30: r = R_PPC64_D34_HI30; | |
1241 | break; | |
1242 | case BFD_RELOC_PPC64_D34_HA30: r = R_PPC64_D34_HA30; | |
1243 | break; | |
1244 | case BFD_RELOC_PPC64_PCREL34: r = R_PPC64_PCREL34; | |
1245 | break; | |
1246 | case BFD_RELOC_PPC64_GOT_PCREL34: r = R_PPC64_GOT_PCREL34; | |
1247 | break; | |
1248 | case BFD_RELOC_PPC64_PLT_PCREL34: r = R_PPC64_PLT_PCREL34; | |
1249 | break; | |
1250 | case BFD_RELOC_PPC64_ADDR16_HIGHER34: r = R_PPC64_ADDR16_HIGHER34; | |
1251 | break; | |
1252 | case BFD_RELOC_PPC64_ADDR16_HIGHERA34: r = R_PPC64_ADDR16_HIGHERA34; | |
1253 | break; | |
1254 | case BFD_RELOC_PPC64_ADDR16_HIGHEST34: r = R_PPC64_ADDR16_HIGHEST34; | |
1255 | break; | |
1256 | case BFD_RELOC_PPC64_ADDR16_HIGHESTA34: r = R_PPC64_ADDR16_HIGHESTA34; | |
1257 | break; | |
1258 | case BFD_RELOC_PPC64_REL16_HIGHER34: r = R_PPC64_REL16_HIGHER34; | |
1259 | break; | |
1260 | case BFD_RELOC_PPC64_REL16_HIGHERA34: r = R_PPC64_REL16_HIGHERA34; | |
1261 | break; | |
1262 | case BFD_RELOC_PPC64_REL16_HIGHEST34: r = R_PPC64_REL16_HIGHEST34; | |
1263 | break; | |
1264 | case BFD_RELOC_PPC64_REL16_HIGHESTA34: r = R_PPC64_REL16_HIGHESTA34; | |
1265 | break; | |
1266 | case BFD_RELOC_PPC64_D28: r = R_PPC64_D28; | |
1267 | break; | |
1268 | case BFD_RELOC_PPC64_PCREL28: r = R_PPC64_PCREL28; | |
1269 | break; | |
411e1bfb AM |
1270 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1271 | break; | |
1272 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1273 | break; |
1274 | } | |
1275 | ||
4ce794b7 | 1276 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1277 | }; |
1278 | ||
157090f7 AM |
1279 | static reloc_howto_type * |
1280 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1281 | const char *r_name) | |
1282 | { | |
1283 | unsigned int i; | |
1284 | ||
a4b6fadd | 1285 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1286 | if (ppc64_elf_howto_raw[i].name != NULL |
1287 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1288 | return &ppc64_elf_howto_raw[i]; | |
1289 | ||
1290 | return NULL; | |
1291 | } | |
1292 | ||
5bd4f169 AM |
1293 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1294 | ||
f3185997 | 1295 | static bfd_boolean |
4aef7643 | 1296 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1297 | Elf_Internal_Rela *dst) |
5bd4f169 | 1298 | { |
65f38f15 AM |
1299 | unsigned int type; |
1300 | ||
ef60b7ff | 1301 | /* Initialize howto table if needed. */ |
5bd4f169 | 1302 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1303 | ppc_howto_init (); |
1304 | ||
65f38f15 | 1305 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1306 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1307 | { |
695344c0 | 1308 | /* xgettext:c-format */ |
0aa13fee | 1309 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1310 | abfd, type); |
f3185997 NC |
1311 | bfd_set_error (bfd_error_bad_value); |
1312 | return FALSE; | |
d0fb9a8d | 1313 | } |
65f38f15 | 1314 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1315 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1316 | { | |
1317 | /* xgettext:c-format */ | |
1318 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1319 | abfd, type); | |
1320 | bfd_set_error (bfd_error_bad_value); | |
1321 | return FALSE; | |
1322 | } | |
2cdcc330 | 1323 | |
f3185997 | 1324 | return TRUE; |
5bd4f169 AM |
1325 | } |
1326 | ||
04c9666a | 1327 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1328 | |
1329 | static bfd_reloc_status_type | |
4ce794b7 AM |
1330 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1331 | void *data, asection *input_section, | |
1332 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1333 | { |
a680de9a PB |
1334 | enum elf_ppc64_reloc_type r_type; |
1335 | long insn; | |
1336 | bfd_size_type octets; | |
3de43e7b | 1337 | bfd_vma value; |
a680de9a | 1338 | |
805fc799 AM |
1339 | /* If this is a relocatable link (output_bfd test tells us), just |
1340 | call the generic function. Any adjustment will be done at final | |
1341 | link time. */ | |
1342 | if (output_bfd != NULL) | |
cedb70c5 | 1343 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1344 | input_section, output_bfd, error_message); |
1345 | ||
5663e321 AM |
1346 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1347 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1348 | doesn't matter. */ |
a680de9a | 1349 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1350 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1351 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1352 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1353 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1354 | reloc_entry->addend += 1ULL << 33; | |
1355 | else | |
1356 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1357 | if (r_type != R_PPC64_REL16DX_HA) |
1358 | return bfd_reloc_continue; | |
1359 | ||
1360 | value = 0; | |
1361 | if (!bfd_is_com_section (symbol->section)) | |
1362 | value = symbol->value; | |
1363 | value += (reloc_entry->addend | |
1364 | + symbol->section->output_offset | |
1365 | + symbol->section->output_section->vma); | |
1366 | value -= (reloc_entry->address | |
1367 | + input_section->output_offset | |
1368 | + input_section->output_section->vma); | |
3de43e7b | 1369 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
1370 | |
1371 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1372 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1373 | insn &= ~0x1fffc1; | |
3de43e7b | 1374 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1375 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1376 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1377 | return bfd_reloc_overflow; |
1378 | return bfd_reloc_ok; | |
805fc799 | 1379 | } |
5bd4f169 | 1380 | |
2441e016 AM |
1381 | static bfd_reloc_status_type |
1382 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1383 | void *data, asection *input_section, | |
1384 | bfd *output_bfd, char **error_message) | |
1385 | { | |
1386 | if (output_bfd != NULL) | |
1387 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1388 | input_section, output_bfd, error_message); | |
1389 | ||
699733f6 AM |
1390 | if (strcmp (symbol->section->name, ".opd") == 0 |
1391 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1392 | { |
1393 | bfd_vma dest = opd_entry_value (symbol->section, | |
1394 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1395 | NULL, NULL, FALSE); |
2441e016 AM |
1396 | if (dest != (bfd_vma) -1) |
1397 | reloc_entry->addend = dest - (symbol->value | |
1398 | + symbol->section->output_section->vma | |
1399 | + symbol->section->output_offset); | |
1400 | } | |
810d4e75 AM |
1401 | else |
1402 | { | |
1403 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1404 | ||
1405 | if (symbol->section->owner != abfd | |
9f284bf9 | 1406 | && symbol->section->owner != NULL |
810d4e75 AM |
1407 | && abiversion (symbol->section->owner) >= 2) |
1408 | { | |
1409 | unsigned int i; | |
1410 | ||
1411 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1412 | { | |
1413 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1414 | ||
1415 | if (strcmp (symdef->name, symbol->name) == 0) | |
1416 | { | |
1417 | elfsym = (elf_symbol_type *) symdef; | |
1418 | break; | |
1419 | } | |
1420 | } | |
1421 | } | |
1422 | reloc_entry->addend | |
1423 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1424 | } | |
2441e016 AM |
1425 | return bfd_reloc_continue; |
1426 | } | |
1427 | ||
805fc799 | 1428 | static bfd_reloc_status_type |
4ce794b7 AM |
1429 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1430 | void *data, asection *input_section, | |
1431 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1432 | { |
1433 | long insn; | |
04c9666a | 1434 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1435 | bfd_size_type octets; |
794e51c0 AM |
1436 | /* Assume 'at' branch hints. */ |
1437 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1438 | |
1439 | /* If this is a relocatable link (output_bfd test tells us), just | |
1440 | call the generic function. Any adjustment will be done at final | |
1441 | link time. */ | |
5bd4f169 | 1442 | if (output_bfd != NULL) |
cedb70c5 | 1443 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1444 | input_section, output_bfd, error_message); |
1445 | ||
1446 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1447 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1448 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1449 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1450 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1451 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1452 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1453 | |
794e51c0 | 1454 | if (is_isa_v2) |
5bd4f169 | 1455 | { |
805fc799 AM |
1456 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1457 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1458 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1459 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1460 | insn |= 0x02 << 21; | |
1461 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1462 | insn |= 0x08 << 21; | |
1463 | else | |
2441e016 | 1464 | goto out; |
5bd4f169 | 1465 | } |
805fc799 AM |
1466 | else |
1467 | { | |
1468 | bfd_vma target = 0; | |
1469 | bfd_vma from; | |
5bd4f169 | 1470 | |
805fc799 AM |
1471 | if (!bfd_is_com_section (symbol->section)) |
1472 | target = symbol->value; | |
1473 | target += symbol->section->output_section->vma; | |
1474 | target += symbol->section->output_offset; | |
1475 | target += reloc_entry->addend; | |
5bd4f169 | 1476 | |
805fc799 AM |
1477 | from = (reloc_entry->address |
1478 | + input_section->output_offset | |
1479 | + input_section->output_section->vma); | |
5bd4f169 | 1480 | |
805fc799 AM |
1481 | /* Invert 'y' bit if not the default. */ |
1482 | if ((bfd_signed_vma) (target - from) < 0) | |
1483 | insn ^= 0x01 << 21; | |
1484 | } | |
4ce794b7 | 1485 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1486 | out: |
1487 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1488 | input_section, output_bfd, error_message); | |
805fc799 | 1489 | } |
5bd4f169 | 1490 | |
805fc799 | 1491 | static bfd_reloc_status_type |
4ce794b7 AM |
1492 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1493 | void *data, asection *input_section, | |
1494 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1495 | { |
1496 | /* If this is a relocatable link (output_bfd test tells us), just | |
1497 | call the generic function. Any adjustment will be done at final | |
1498 | link time. */ | |
1499 | if (output_bfd != NULL) | |
cedb70c5 | 1500 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1501 | input_section, output_bfd, error_message); |
5bd4f169 | 1502 | |
805fc799 AM |
1503 | /* Subtract the symbol section base address. */ |
1504 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1505 | return bfd_reloc_continue; |
1506 | } | |
1507 | ||
805fc799 | 1508 | static bfd_reloc_status_type |
4ce794b7 AM |
1509 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1510 | void *data, asection *input_section, | |
1511 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1512 | { |
1513 | /* If this is a relocatable link (output_bfd test tells us), just | |
1514 | call the generic function. Any adjustment will be done at final | |
1515 | link time. */ | |
1516 | if (output_bfd != NULL) | |
cedb70c5 | 1517 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1518 | input_section, output_bfd, error_message); |
1519 | ||
1520 | /* Subtract the symbol section base address. */ | |
1521 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1522 | ||
1523 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1524 | reloc_entry->addend += 0x8000; | |
1525 | return bfd_reloc_continue; | |
1526 | } | |
1527 | ||
1528 | static bfd_reloc_status_type | |
4ce794b7 AM |
1529 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1530 | void *data, asection *input_section, | |
1531 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1532 | { |
1533 | bfd_vma TOCstart; | |
1534 | ||
1535 | /* If this is a relocatable link (output_bfd test tells us), just | |
1536 | call the generic function. Any adjustment will be done at final | |
1537 | link time. */ | |
1538 | if (output_bfd != NULL) | |
cedb70c5 | 1539 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1540 | input_section, output_bfd, error_message); |
1541 | ||
1542 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1543 | if (TOCstart == 0) | |
1c865ab2 | 1544 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1545 | |
1546 | /* Subtract the TOC base address. */ | |
1547 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1548 | return bfd_reloc_continue; | |
1549 | } | |
1550 | ||
1551 | static bfd_reloc_status_type | |
4ce794b7 AM |
1552 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1553 | void *data, asection *input_section, | |
1554 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1555 | { |
1556 | bfd_vma TOCstart; | |
1557 | ||
1558 | /* If this is a relocatable link (output_bfd test tells us), just | |
1559 | call the generic function. Any adjustment will be done at final | |
1560 | link time. */ | |
1561 | if (output_bfd != NULL) | |
cedb70c5 | 1562 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1563 | input_section, output_bfd, error_message); |
1564 | ||
1565 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1566 | if (TOCstart == 0) | |
1c865ab2 | 1567 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1568 | |
1569 | /* Subtract the TOC base address. */ | |
1570 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1571 | ||
1572 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1573 | reloc_entry->addend += 0x8000; | |
1574 | return bfd_reloc_continue; | |
1575 | } | |
1576 | ||
1577 | static bfd_reloc_status_type | |
4ce794b7 AM |
1578 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1579 | void *data, asection *input_section, | |
1580 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1581 | { |
1582 | bfd_vma TOCstart; | |
1583 | bfd_size_type octets; | |
1584 | ||
1585 | /* If this is a relocatable link (output_bfd test tells us), just | |
1586 | call the generic function. Any adjustment will be done at final | |
1587 | link time. */ | |
1588 | if (output_bfd != NULL) | |
cedb70c5 | 1589 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1590 | input_section, output_bfd, error_message); |
1591 | ||
1592 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1593 | if (TOCstart == 0) | |
1c865ab2 | 1594 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1595 | |
1596 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1597 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
1598 | return bfd_reloc_ok; | |
1599 | } | |
1600 | ||
5663e321 AM |
1601 | static bfd_reloc_status_type |
1602 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1603 | void *data, asection *input_section, | |
1604 | bfd *output_bfd, char **error_message) | |
1605 | { | |
1606 | uint64_t insn; | |
1607 | bfd_vma targ; | |
1608 | ||
1609 | if (output_bfd != NULL) | |
1610 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1611 | input_section, output_bfd, error_message); | |
1612 | ||
1613 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1614 | insn <<= 32; | |
1615 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4); | |
1616 | ||
1617 | targ = (symbol->section->output_section->vma | |
1618 | + symbol->section->output_offset | |
1619 | + reloc_entry->addend); | |
1620 | if (!bfd_is_com_section (symbol->section)) | |
1621 | targ += symbol->value; | |
1622 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1623 | targ += 1ULL << 33; | |
1624 | if (reloc_entry->howto->pc_relative) | |
1625 | { | |
1626 | bfd_vma from = (reloc_entry->address | |
1627 | + input_section->output_offset | |
1628 | + input_section->output_section->vma); | |
1629 | targ -=from; | |
1630 | } | |
1631 | targ >>= reloc_entry->howto->rightshift; | |
1632 | insn &= ~reloc_entry->howto->dst_mask; | |
1633 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
1634 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + reloc_entry->address); | |
1635 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address + 4); | |
1636 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed | |
1637 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1638 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1639 | return bfd_reloc_overflow; | |
1640 | return bfd_reloc_ok; | |
1641 | } | |
1642 | ||
805fc799 | 1643 | static bfd_reloc_status_type |
4ce794b7 AM |
1644 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1645 | void *data, asection *input_section, | |
1646 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1647 | { |
1648 | /* If this is a relocatable link (output_bfd test tells us), just | |
1649 | call the generic function. Any adjustment will be done at final | |
1650 | link time. */ | |
1651 | if (output_bfd != NULL) | |
cedb70c5 | 1652 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1653 | input_section, output_bfd, error_message); |
1654 | ||
1655 | if (error_message != NULL) | |
1656 | { | |
1657 | static char buf[60]; | |
1658 | sprintf (buf, "generic linker can't handle %s", | |
1659 | reloc_entry->howto->name); | |
1660 | *error_message = buf; | |
1661 | } | |
1662 | return bfd_reloc_dangerous; | |
1663 | } | |
1664 | ||
927be08e AM |
1665 | /* Track GOT entries needed for a given symbol. We might need more |
1666 | than one got entry per symbol. */ | |
1667 | struct got_entry | |
1668 | { | |
1669 | struct got_entry *next; | |
1670 | ||
1671 | /* The symbol addend that we'll be placing in the GOT. */ | |
1672 | bfd_vma addend; | |
1673 | ||
1674 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1675 | symbol referenced from different input files. This is to support | |
1676 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1677 | from one input file to another. After partitioning into TOC groups | |
1678 | we merge entries within the group. | |
1679 | ||
1680 | Point to the BFD owning this GOT entry. */ | |
1681 | bfd *owner; | |
1682 | ||
1683 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1684 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1685 | unsigned char tls_type; |
927be08e AM |
1686 | |
1687 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1688 | unsigned char is_indirect; |
927be08e AM |
1689 | |
1690 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1691 | union | |
2cdcc330 AM |
1692 | { |
1693 | bfd_signed_vma refcount; | |
1694 | bfd_vma offset; | |
1695 | struct got_entry *ent; | |
1696 | } got; | |
927be08e AM |
1697 | }; |
1698 | ||
1699 | /* The same for PLT. */ | |
1700 | struct plt_entry | |
1701 | { | |
1702 | struct plt_entry *next; | |
1703 | ||
1704 | bfd_vma addend; | |
1705 | ||
1706 | union | |
2cdcc330 AM |
1707 | { |
1708 | bfd_signed_vma refcount; | |
1709 | bfd_vma offset; | |
1710 | } plt; | |
927be08e AM |
1711 | }; |
1712 | ||
e717da7e AM |
1713 | struct ppc64_elf_obj_tdata |
1714 | { | |
1715 | struct elf_obj_tdata elf; | |
1716 | ||
1717 | /* Shortcuts to dynamic linker sections. */ | |
1718 | asection *got; | |
1719 | asection *relgot; | |
1720 | ||
b3fac117 AM |
1721 | /* Used during garbage collection. We attach global symbols defined |
1722 | on removed .opd entries to this section so that the sym is removed. */ | |
1723 | asection *deleted_section; | |
81688140 | 1724 | |
927be08e | 1725 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1726 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1727 | struct got_entry tlsld_got; |
8860955f | 1728 | |
2cdcc330 AM |
1729 | union |
1730 | { | |
729eabd5 AM |
1731 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1732 | Elf_Internal_Rela *relocs; | |
1733 | ||
1734 | /* Section contents. */ | |
1735 | bfd_byte *contents; | |
1736 | } opd; | |
d77c8a4b AM |
1737 | |
1738 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1739 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1740 | unsigned int has_small_toc_reloc : 1; |
1741 | ||
560c8763 AM |
1742 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1743 | instruction not one we handle. */ | |
1744 | unsigned int unexpected_toc_insn : 1; | |
066f4018 AM |
1745 | |
1746 | /* Set if got relocs that can be optimised are present in this file. */ | |
1747 | unsigned int has_gotrel : 1; | |
e717da7e AM |
1748 | }; |
1749 | ||
1750 | #define ppc64_elf_tdata(bfd) \ | |
1751 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1752 | ||
1753 | #define ppc64_tlsld_got(bfd) \ | |
1754 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1755 | ||
0c8d6e5c AM |
1756 | #define is_ppc64_elf(bfd) \ |
1757 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1758 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1759 | |
e717da7e AM |
1760 | /* Override the generic function because we store some extras. */ |
1761 | ||
1762 | static bfd_boolean | |
1763 | ppc64_elf_mkobject (bfd *abfd) | |
1764 | { | |
0ffa91dd | 1765 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1766 | PPC64_ELF_DATA); |
e717da7e AM |
1767 | } |
1768 | ||
feee612b | 1769 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1770 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1771 | |
b34976b6 | 1772 | static bfd_boolean |
4ce794b7 | 1773 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1774 | { |
14b57c7c AM |
1775 | if (!abfd->arch_info->the_default) |
1776 | return TRUE; | |
1777 | ||
1778 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1779 | { |
1780 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1781 | ||
1782 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1783 | { | |
1784 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1785 | abfd->arch_info = abfd->arch_info->next; | |
1786 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1787 | } | |
1788 | } | |
14b57c7c | 1789 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1790 | } |
1791 | ||
d37c89e5 AM |
1792 | /* Support for core dump NOTE sections. */ |
1793 | ||
1794 | static bfd_boolean | |
1795 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1796 | { | |
eea6121a | 1797 | size_t offset, size; |
d37c89e5 AM |
1798 | |
1799 | if (note->descsz != 504) | |
1800 | return FALSE; | |
1801 | ||
1802 | /* pr_cursig */ | |
228e534f | 1803 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1804 | |
1805 | /* pr_pid */ | |
228e534f | 1806 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1807 | |
1808 | /* pr_reg */ | |
1809 | offset = 112; | |
eea6121a | 1810 | size = 384; |
d37c89e5 AM |
1811 | |
1812 | /* Make a ".reg/999" section. */ | |
1813 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1814 | size, note->descpos + offset); |
d37c89e5 AM |
1815 | } |
1816 | ||
1817 | static bfd_boolean | |
1818 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1819 | { | |
1820 | if (note->descsz != 136) | |
1821 | return FALSE; | |
1822 | ||
228e534f | 1823 | elf_tdata (abfd)->core->pid |
bc989cdc | 1824 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1825 | elf_tdata (abfd)->core->program |
d37c89e5 | 1826 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1827 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1828 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1829 | ||
1830 | return TRUE; | |
1831 | } | |
1832 | ||
183e98be AM |
1833 | static char * |
1834 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1835 | ...) | |
1836 | { | |
1837 | switch (note_type) | |
1838 | { | |
1839 | default: | |
1840 | return NULL; | |
1841 | ||
1842 | case NT_PRPSINFO: | |
1843 | { | |
9ef6d1e3 | 1844 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1845 | va_list ap; |
1846 | ||
1847 | va_start (ap, note_type); | |
75cd47ed | 1848 | memset (data, 0, sizeof (data)); |
183e98be | 1849 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1850 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1851 | DIAGNOSTIC_PUSH; |
be3e27bb | 1852 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1853 | -Wstringop-truncation: |
1854 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1855 | */ | |
95da9854 L |
1856 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1857 | #endif | |
183e98be | 1858 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1859 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1860 | DIAGNOSTIC_POP; |
fe75810f | 1861 | #endif |
183e98be AM |
1862 | va_end (ap); |
1863 | return elfcore_write_note (abfd, buf, bufsiz, | |
1864 | "CORE", note_type, data, sizeof (data)); | |
1865 | } | |
1866 | ||
1867 | case NT_PRSTATUS: | |
1868 | { | |
1869 | char data[504]; | |
1870 | va_list ap; | |
1871 | long pid; | |
1872 | int cursig; | |
1873 | const void *greg; | |
1874 | ||
1875 | va_start (ap, note_type); | |
1876 | memset (data, 0, 112); | |
1877 | pid = va_arg (ap, long); | |
1878 | bfd_put_32 (abfd, pid, data + 32); | |
1879 | cursig = va_arg (ap, int); | |
1880 | bfd_put_16 (abfd, cursig, data + 12); | |
1881 | greg = va_arg (ap, const void *); | |
1882 | memcpy (data + 112, greg, 384); | |
1883 | memset (data + 496, 0, 8); | |
1884 | va_end (ap); | |
1885 | return elfcore_write_note (abfd, buf, bufsiz, | |
1886 | "CORE", note_type, data, sizeof (data)); | |
1887 | } | |
1888 | } | |
1889 | } | |
1890 | ||
5d35169e AM |
1891 | /* Add extra PPC sections. */ |
1892 | ||
2cdcc330 | 1893 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1894 | { |
07d6d2b8 AM |
1895 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1896 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1897 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1898 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1899 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1900 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1901 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1902 | }; |
1903 | ||
7c8fe5c4 AM |
1904 | enum _ppc64_sec_type { |
1905 | sec_normal = 0, | |
1906 | sec_opd = 1, | |
1907 | sec_toc = 2 | |
1908 | }; | |
1909 | ||
f0abc2a1 AM |
1910 | struct _ppc64_elf_section_data |
1911 | { | |
1912 | struct bfd_elf_section_data elf; | |
411e1bfb | 1913 | |
f0abc2a1 AM |
1914 | union |
1915 | { | |
51aecdc5 AM |
1916 | /* An array with one entry for each opd function descriptor, |
1917 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1918 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1919 | struct _opd_sec_data |
1920 | { | |
1921 | /* Points to the function code section for local opd entries. */ | |
1922 | asection **func_sec; | |
1923 | ||
1924 | /* After editing .opd, adjust references to opd local syms. */ | |
1925 | long *adjust; | |
1926 | } opd; | |
7c8fe5c4 | 1927 | |
3a71aa26 AM |
1928 | /* An array for toc sections, indexed by offset/8. */ |
1929 | struct _toc_sec_data | |
1930 | { | |
1931 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1932 | unsigned *symndx; | |
1933 | ||
1934 | /* And the relocation addend. */ | |
1935 | bfd_vma *add; | |
1936 | } toc; | |
7c8fe5c4 AM |
1937 | } u; |
1938 | ||
1939 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 1940 | |
7c8fe5c4 AM |
1941 | /* Flag set when small branches are detected. Used to |
1942 | select suitable defaults for the stub group size. */ | |
1943 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
1944 | |
1945 | /* Flag set when PLTCALL relocs are detected. */ | |
1946 | unsigned int has_pltcall:1; | |
066f4018 AM |
1947 | |
1948 | /* Flag set when section has GOT relocations that can be optimised. */ | |
1949 | unsigned int has_gotrel:1; | |
f0abc2a1 AM |
1950 | }; |
1951 | ||
1952 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 1953 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
1954 | |
1955 | static bfd_boolean | |
4ce794b7 | 1956 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1957 | { |
f592407e AM |
1958 | if (!sec->used_by_bfd) |
1959 | { | |
1960 | struct _ppc64_elf_section_data *sdata; | |
1961 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1962 | |
f592407e AM |
1963 | sdata = bfd_zalloc (abfd, amt); |
1964 | if (sdata == NULL) | |
1965 | return FALSE; | |
1966 | sec->used_by_bfd = sdata; | |
1967 | } | |
f0abc2a1 AM |
1968 | |
1969 | return _bfd_elf_new_section_hook (abfd, sec); | |
1970 | } | |
4025353c | 1971 | |
74f0fb50 | 1972 | static struct _opd_sec_data * |
4025353c AM |
1973 | get_opd_info (asection * sec) |
1974 | { | |
1975 | if (sec != NULL | |
1976 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 1977 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 1978 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
1979 | return NULL; |
1980 | } | |
90e3cdf2 JJ |
1981 | \f |
1982 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 1983 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 1984 | static asection *synthetic_opd; |
90e3cdf2 | 1985 | |
699733f6 | 1986 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
1987 | |
1988 | static int | |
1989 | compare_symbols (const void *ap, const void *bp) | |
1990 | { | |
2cdcc330 AM |
1991 | const asymbol *a = *(const asymbol **) ap; |
1992 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 1993 | |
699733f6 AM |
1994 | /* Section symbols first. */ |
1995 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 1996 | return -1; |
699733f6 | 1997 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
1998 | return 1; |
1999 | ||
699733f6 | 2000 | /* then .opd symbols. */ |
cd285db5 AM |
2001 | if (synthetic_opd != NULL) |
2002 | { | |
2003 | if (strcmp (a->section->name, ".opd") == 0 | |
2004 | && strcmp (b->section->name, ".opd") != 0) | |
2005 | return -1; | |
2006 | if (strcmp (a->section->name, ".opd") != 0 | |
2007 | && strcmp (b->section->name, ".opd") == 0) | |
2008 | return 1; | |
2009 | } | |
90e3cdf2 | 2010 | |
699733f6 | 2011 | /* then other code symbols. */ |
2cdcc330 AM |
2012 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2013 | == (SEC_CODE | SEC_ALLOC)) | |
2014 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2015 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2016 | return -1; |
2017 | ||
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 | ||
2024 | if (synthetic_relocatable) | |
2025 | { | |
2026 | if (a->section->id < b->section->id) | |
2027 | return -1; | |
2028 | ||
2029 | if (a->section->id > b->section->id) | |
2030 | return 1; | |
2031 | } | |
2032 | ||
2033 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2034 | return -1; | |
2035 | ||
2036 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2037 | return 1; | |
2038 | ||
4d35a0aa AM |
2039 | /* For syms with the same value, prefer strong dynamic global function |
2040 | syms over other syms. */ | |
2041 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2042 | return -1; | |
2043 | ||
2044 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2045 | return 1; | |
2046 | ||
2047 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2048 | return -1; | |
2049 | ||
2050 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2051 | return 1; | |
2052 | ||
2053 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2054 | return -1; | |
2055 | ||
2056 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2057 | return 1; | |
2058 | ||
2059 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2060 | return -1; | |
2061 | ||
2062 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2063 | return 1; | |
2064 | ||
aaed6f5b | 2065 | return a > b; |
90e3cdf2 JJ |
2066 | } |
2067 | ||
699733f6 | 2068 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2069 | |
699733f6 | 2070 | static asymbol * |
7292b3ac | 2071 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 2072 | { |
699733f6 | 2073 | long mid; |
90e3cdf2 | 2074 | |
7292b3ac | 2075 | if (id == (unsigned) -1) |
699733f6 AM |
2076 | { |
2077 | while (lo < hi) | |
2078 | { | |
2079 | mid = (lo + hi) >> 1; | |
2080 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2081 | lo = mid + 1; | |
2082 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2083 | hi = mid; | |
2084 | else | |
2085 | return syms[mid]; | |
2086 | } | |
2087 | } | |
2088 | else | |
2089 | { | |
2090 | while (lo < hi) | |
2091 | { | |
2092 | mid = (lo + hi) >> 1; | |
2093 | if (syms[mid]->section->id < id) | |
2094 | lo = mid + 1; | |
2095 | else if (syms[mid]->section->id > id) | |
2096 | hi = mid; | |
2097 | else if (syms[mid]->value < value) | |
2098 | lo = mid + 1; | |
2099 | else if (syms[mid]->value > value) | |
2100 | hi = mid; | |
2101 | else | |
2102 | return syms[mid]; | |
2103 | } | |
2104 | } | |
2105 | return NULL; | |
90e3cdf2 JJ |
2106 | } |
2107 | ||
468392fb AM |
2108 | static bfd_boolean |
2109 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2110 | { | |
2111 | bfd_vma vma = *(bfd_vma *) ptr; | |
2112 | return ((section->flags & SEC_ALLOC) != 0 | |
2113 | && section->vma <= vma | |
2114 | && vma < section->vma + section->size); | |
2115 | } | |
2116 | ||
699733f6 | 2117 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2118 | entry syms. Also generate @plt symbols for the glink branch table. |
2119 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2120 | |
2121 | static long | |
a7535cf3 AM |
2122 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2123 | long static_count, asymbol **static_syms, | |
2124 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2125 | asymbol **ret) |
90e3cdf2 JJ |
2126 | { |
2127 | asymbol *s; | |
0ccf57bd | 2128 | size_t i, j, count; |
90e3cdf2 | 2129 | char *names; |
0ccf57bd | 2130 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2131 | asection *opd = NULL; |
90e3cdf2 | 2132 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2133 | asymbol **syms; |
ee67d69a | 2134 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2135 | |
2136 | *ret = NULL; | |
2137 | ||
ee67d69a AM |
2138 | if (abi < 2) |
2139 | { | |
2140 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2141 | if (opd == NULL && abi == 1) | |
2142 | return 0; | |
2143 | } | |
90e3cdf2 | 2144 | |
a5259595 AM |
2145 | syms = NULL; |
2146 | codesecsym = 0; | |
2147 | codesecsymend = 0; | |
2148 | secsymend = 0; | |
2149 | opdsymend = 0; | |
2150 | symcount = 0; | |
2151 | if (opd != NULL) | |
c9727e01 | 2152 | { |
a5259595 AM |
2153 | symcount = static_count; |
2154 | if (!relocatable) | |
2155 | symcount += dyn_count; | |
2156 | if (symcount == 0) | |
2157 | return 0; | |
c9727e01 | 2158 | |
a5259595 AM |
2159 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2160 | if (syms == NULL) | |
2161 | return -1; | |
90e3cdf2 | 2162 | |
a5259595 AM |
2163 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2164 | { | |
2165 | /* Use both symbol tables. */ | |
2166 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2167 | memcpy (syms + static_count, dyn_syms, | |
2168 | (dyn_count + 1) * sizeof (*syms)); | |
2169 | } | |
2170 | else if (!relocatable && static_count == 0) | |
2171 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2172 | else | |
2173 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2174 | |
0ccf57bd AM |
2175 | /* Trim uninteresting symbols. Interesting symbols are section, |
2176 | function, and notype symbols. */ | |
2177 | for (i = 0, j = 0; i < symcount; ++i) | |
2178 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2179 | | BSF_RELC | BSF_SRELC)) == 0) | |
2180 | syms[j++] = syms[i]; | |
2181 | symcount = j; | |
2182 | ||
a5259595 AM |
2183 | synthetic_relocatable = relocatable; |
2184 | synthetic_opd = opd; | |
2185 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2186 | |
a5259595 AM |
2187 | if (!relocatable && symcount > 1) |
2188 | { | |
bfa5bd2a PA |
2189 | /* Trim duplicate syms, since we may have merged the normal |
2190 | and dynamic symbols. Actually, we only care about syms | |
2191 | that have different values, so trim any with the same | |
2192 | value. Don't consider ifunc and ifunc resolver symbols | |
2193 | duplicates however, because GDB wants to know whether a | |
2194 | text symbol is an ifunc resolver. */ | |
a5259595 | 2195 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2196 | { |
2197 | const asymbol *s0 = syms[i - 1]; | |
2198 | const asymbol *s1 = syms[i]; | |
2199 | ||
2200 | if ((s0->value + s0->section->vma | |
2201 | != s1->value + s1->section->vma) | |
2202 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2203 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2204 | syms[j++] = syms[i]; | |
2205 | } | |
a5259595 AM |
2206 | symcount = j; |
2207 | } | |
699733f6 | 2208 | |
a5259595 AM |
2209 | i = 0; |
2210 | /* Note that here and in compare_symbols we can't compare opd and | |
2211 | sym->section directly. With separate debug info files, the | |
2212 | symbols will be extracted from the debug file while abfd passed | |
2213 | to this function is the real binary. */ | |
0ccf57bd | 2214 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
2215 | ++i; |
2216 | codesecsym = i; | |
2217 | ||
2218 | for (; i < symcount; ++i) | |
2219 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2220 | | SEC_THREAD_LOCAL)) | |
2221 | != (SEC_CODE | SEC_ALLOC)) | |
2222 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2223 | break; | |
2224 | codesecsymend = i; | |
2225 | ||
2226 | for (; i < symcount; ++i) | |
2227 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2228 | break; | |
2229 | secsymend = i; | |
2230 | ||
2231 | for (; i < symcount; ++i) | |
2232 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2233 | break; | |
2234 | opdsymend = i; | |
2235 | ||
2236 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2237 | if (((syms[i]->section->flags |
2238 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2239 | != (SEC_CODE | SEC_ALLOC)) |
2240 | break; | |
2241 | symcount = i; | |
2242 | } | |
c9727e01 | 2243 | count = 0; |
90e3cdf2 | 2244 | |
699733f6 | 2245 | if (relocatable) |
90e3cdf2 | 2246 | { |
699733f6 AM |
2247 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2248 | arelent *r; | |
2249 | size_t size; | |
0ccf57bd | 2250 | size_t relcount; |
90e3cdf2 | 2251 | |
468392fb AM |
2252 | if (opdsymend == secsymend) |
2253 | goto done; | |
2254 | ||
699733f6 | 2255 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2256 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2257 | if (relcount == 0) |
c9727e01 | 2258 | goto done; |
90e3cdf2 | 2259 | |
7356fed5 AM |
2260 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2261 | { | |
2262 | count = -1; | |
2263 | goto done; | |
2264 | } | |
2265 | ||
699733f6 | 2266 | size = 0; |
595da8c5 | 2267 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2268 | { |
2269 | asymbol *sym; | |
90e3cdf2 | 2270 | |
595da8c5 | 2271 | while (r < opd->relocation + relcount |
699733f6 AM |
2272 | && r->address < syms[i]->value + opd->vma) |
2273 | ++r; | |
90e3cdf2 | 2274 | |
595da8c5 | 2275 | if (r == opd->relocation + relcount) |
699733f6 | 2276 | break; |
90e3cdf2 | 2277 | |
699733f6 AM |
2278 | if (r->address != syms[i]->value + opd->vma) |
2279 | continue; | |
90e3cdf2 | 2280 | |
699733f6 AM |
2281 | if (r->howto->type != R_PPC64_ADDR64) |
2282 | continue; | |
90e3cdf2 | 2283 | |
699733f6 AM |
2284 | sym = *r->sym_ptr_ptr; |
2285 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2286 | sym->section->id, sym->value + r->addend)) | |
2287 | { | |
2288 | ++count; | |
2289 | size += sizeof (asymbol); | |
2290 | size += strlen (syms[i]->name) + 2; | |
2291 | } | |
2292 | } | |
90e3cdf2 | 2293 | |
c4b0b099 AM |
2294 | if (size == 0) |
2295 | goto done; | |
699733f6 AM |
2296 | s = *ret = bfd_malloc (size); |
2297 | if (s == NULL) | |
2298 | { | |
7356fed5 | 2299 | count = -1; |
c9727e01 | 2300 | goto done; |
699733f6 | 2301 | } |
90e3cdf2 | 2302 | |
699733f6 | 2303 | names = (char *) (s + count); |
90e3cdf2 | 2304 | |
595da8c5 | 2305 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2306 | { |
699733f6 | 2307 | asymbol *sym; |
90e3cdf2 | 2308 | |
595da8c5 | 2309 | while (r < opd->relocation + relcount |
699733f6 AM |
2310 | && r->address < syms[i]->value + opd->vma) |
2311 | ++r; | |
90e3cdf2 | 2312 | |
595da8c5 | 2313 | if (r == opd->relocation + relcount) |
699733f6 AM |
2314 | break; |
2315 | ||
2316 | if (r->address != syms[i]->value + opd->vma) | |
2317 | continue; | |
2318 | ||
2319 | if (r->howto->type != R_PPC64_ADDR64) | |
2320 | continue; | |
90e3cdf2 | 2321 | |
699733f6 AM |
2322 | sym = *r->sym_ptr_ptr; |
2323 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2324 | sym->section->id, sym->value + r->addend)) | |
2325 | { | |
2326 | size_t len; | |
2327 | ||
2328 | *s = *syms[i]; | |
6ba2a415 | 2329 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2330 | s->section = sym->section; |
2331 | s->value = sym->value + r->addend; | |
2332 | s->name = names; | |
2333 | *names++ = '.'; | |
2334 | len = strlen (syms[i]->name); | |
2335 | memcpy (names, syms[i]->name, len + 1); | |
2336 | names += len + 1; | |
6f610d07 UW |
2337 | /* Have udata.p point back to the original symbol this |
2338 | synthetic symbol was derived from. */ | |
2339 | s->udata.p = syms[i]; | |
699733f6 AM |
2340 | s++; |
2341 | } | |
2342 | } | |
2343 | } | |
2344 | else | |
90e3cdf2 | 2345 | { |
468392fb | 2346 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2347 | bfd_byte *contents = NULL; |
699733f6 | 2348 | size_t size; |
0ccf57bd | 2349 | size_t plt_count = 0; |
468392fb AM |
2350 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2351 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2352 | arelent *p; | |
90e3cdf2 | 2353 | |
ee67d69a | 2354 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2355 | { |
c4b0b099 AM |
2356 | free_contents_and_exit_err: |
2357 | count = -1; | |
ee67d69a | 2358 | free_contents_and_exit: |
699733f6 | 2359 | if (contents) |
ee67d69a | 2360 | free (contents); |
c9727e01 | 2361 | goto done; |
699733f6 | 2362 | } |
90e3cdf2 | 2363 | |
699733f6 AM |
2364 | size = 0; |
2365 | for (i = secsymend; i < opdsymend; ++i) | |
2366 | { | |
2367 | bfd_vma ent; | |
90e3cdf2 | 2368 | |
5ef11c02 AM |
2369 | /* Ignore bogus symbols. */ |
2370 | if (syms[i]->value > opd->size - 8) | |
2371 | continue; | |
2372 | ||
699733f6 AM |
2373 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2374 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2375 | { | |
2376 | ++count; | |
2377 | size += sizeof (asymbol); | |
2378 | size += strlen (syms[i]->name) + 2; | |
2379 | } | |
2380 | } | |
90e3cdf2 | 2381 | |
468392fb | 2382 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2383 | if (dyn_count != 0 |
2384 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2385 | { |
2386 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2387 | size_t extdynsize; | |
2388 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2389 | ||
2390 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2391 | goto free_contents_and_exit_err; |
468392fb AM |
2392 | |
2393 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2394 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2395 | ||
2396 | extdyn = dynbuf; | |
2397 | extdynend = extdyn + dynamic->size; | |
2398 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2399 | { | |
2400 | Elf_Internal_Dyn dyn; | |
2401 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2402 | ||
2403 | if (dyn.d_tag == DT_NULL) | |
2404 | break; | |
2405 | ||
2406 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2407 | { | |
9e390558 AM |
2408 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2409 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2410 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2411 | /* The .glink section usually does not survive the final |
2412 | link; search for the section (usually .text) where the | |
2413 | glink stubs now reside. */ | |
2414 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2415 | &glink_vma); | |
2416 | break; | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | free (dynbuf); | |
2421 | } | |
2422 | ||
2423 | if (glink != NULL) | |
2424 | { | |
2425 | /* Determine __glink trampoline by reading the relative branch | |
2426 | from the first glink stub. */ | |
2427 | bfd_byte buf[4]; | |
b9e5796b AM |
2428 | unsigned int off = 0; |
2429 | ||
2430 | while (bfd_get_section_contents (abfd, glink, buf, | |
2431 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2432 | { |
2433 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2434 | insn ^= B_DOT; | |
2435 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2436 | { |
2cdcc330 AM |
2437 | resolv_vma |
2438 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2439 | break; |
2440 | } | |
2441 | off += 4; | |
2442 | if (off > 4) | |
2443 | break; | |
468392fb AM |
2444 | } |
2445 | ||
2446 | if (resolv_vma) | |
2447 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2448 | |
066ee829 AM |
2449 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2450 | if (relplt != NULL) | |
2451 | { | |
2452 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2453 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2454 | goto free_contents_and_exit_err; |
68ffbac6 | 2455 | |
066ee829 AM |
2456 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2457 | size += plt_count * sizeof (asymbol); | |
468392fb | 2458 | |
066ee829 AM |
2459 | p = relplt->relocation; |
2460 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2461 | { |
2462 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2463 | if (p->addend != 0) | |
2464 | size += sizeof ("+0x") - 1 + 16; | |
2465 | } | |
066ee829 | 2466 | } |
468392fb AM |
2467 | } |
2468 | ||
c4b0b099 AM |
2469 | if (size == 0) |
2470 | goto free_contents_and_exit; | |
699733f6 AM |
2471 | s = *ret = bfd_malloc (size); |
2472 | if (s == NULL) | |
c4b0b099 | 2473 | goto free_contents_and_exit_err; |
90e3cdf2 | 2474 | |
468392fb | 2475 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2476 | |
699733f6 | 2477 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2478 | { |
699733f6 | 2479 | bfd_vma ent; |
90e3cdf2 | 2480 | |
5ef11c02 AM |
2481 | if (syms[i]->value > opd->size - 8) |
2482 | continue; | |
2483 | ||
699733f6 AM |
2484 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2485 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2486 | { |
0ccf57bd | 2487 | size_t lo, hi; |
699733f6 | 2488 | size_t len; |
c9727e01 | 2489 | asection *sec = abfd->sections; |
90e3cdf2 | 2490 | |
699733f6 AM |
2491 | *s = *syms[i]; |
2492 | lo = codesecsym; | |
2493 | hi = codesecsymend; | |
2494 | while (lo < hi) | |
2495 | { | |
0ccf57bd | 2496 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2497 | if (syms[mid]->section->vma < ent) |
2498 | lo = mid + 1; | |
2499 | else if (syms[mid]->section->vma > ent) | |
2500 | hi = mid; | |
2501 | else | |
c9727e01 AM |
2502 | { |
2503 | sec = syms[mid]->section; | |
2504 | break; | |
2505 | } | |
699733f6 AM |
2506 | } |
2507 | ||
c9727e01 | 2508 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2509 | sec = syms[lo - 1]->section; |
699733f6 AM |
2510 | |
2511 | for (; sec != NULL; sec = sec->next) | |
2512 | { | |
2513 | if (sec->vma > ent) | |
2514 | break; | |
63524580 JK |
2515 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2516 | info file. */ | |
2517 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2518 | break; |
2519 | if ((sec->flags & SEC_CODE) != 0) | |
2520 | s->section = sec; | |
2521 | } | |
6ba2a415 | 2522 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2523 | s->value = ent - s->section->vma; |
2524 | s->name = names; | |
2525 | *names++ = '.'; | |
2526 | len = strlen (syms[i]->name); | |
2527 | memcpy (names, syms[i]->name, len + 1); | |
2528 | names += len + 1; | |
6f610d07 UW |
2529 | /* Have udata.p point back to the original symbol this |
2530 | synthetic symbol was derived from. */ | |
2531 | s->udata.p = syms[i]; | |
699733f6 | 2532 | s++; |
90e3cdf2 | 2533 | } |
90e3cdf2 | 2534 | } |
699733f6 | 2535 | free (contents); |
468392fb AM |
2536 | |
2537 | if (glink != NULL && relplt != NULL) | |
2538 | { | |
2539 | if (resolv_vma) | |
2540 | { | |
2541 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2542 | memset (s, 0, sizeof *s); |
468392fb | 2543 | s->the_bfd = abfd; |
6ba2a415 | 2544 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2545 | s->section = glink; |
2546 | s->value = resolv_vma - glink->vma; | |
2547 | s->name = names; | |
2cdcc330 AM |
2548 | memcpy (names, "__glink_PLTresolve", |
2549 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2550 | names += sizeof ("__glink_PLTresolve"); |
2551 | s++; | |
2552 | count++; | |
2553 | } | |
2554 | ||
2555 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2556 | stub rather than on the glink branch table entry. The | |
2557 | objdump disassembler would then use a sensible symbol | |
2558 | name on plt calls. The difficulty in doing so is | |
2559 | a) finding the stubs, and, | |
2560 | b) matching stubs against plt entries, and, | |
2561 | c) there can be multiple stubs for a given plt entry. | |
2562 | ||
2563 | Solving (a) could be done by code scanning, but older | |
2564 | ppc64 binaries used different stubs to current code. | |
2565 | (b) is the tricky one since you need to known the toc | |
2566 | pointer for at least one function that uses a pic stub to | |
2567 | be able to calculate the plt address referenced. | |
2568 | (c) means gdb would need to set multiple breakpoints (or | |
2569 | find the glink branch itself) when setting breakpoints | |
2570 | for pending shared library loads. */ | |
2571 | p = relplt->relocation; | |
2572 | for (i = 0; i < plt_count; i++, p++) | |
2573 | { | |
2574 | size_t len; | |
2575 | ||
2576 | *s = **p->sym_ptr_ptr; | |
2577 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2578 | we are defining a symbol, ensure one of them is set. */ | |
2579 | if ((s->flags & BSF_LOCAL) == 0) | |
2580 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2581 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2582 | s->section = glink; |
2583 | s->value = glink_vma - glink->vma; | |
2584 | s->name = names; | |
2585 | s->udata.p = NULL; | |
2586 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2587 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2588 | names += len; | |
e054468f AM |
2589 | if (p->addend != 0) |
2590 | { | |
2591 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2592 | names += sizeof ("+0x") - 1; | |
2593 | bfd_sprintf_vma (abfd, names, p->addend); | |
2594 | names += strlen (names); | |
2595 | } | |
468392fb AM |
2596 | memcpy (names, "@plt", sizeof ("@plt")); |
2597 | names += sizeof ("@plt"); | |
2598 | s++; | |
b9e5796b AM |
2599 | if (abi < 2) |
2600 | { | |
2601 | glink_vma += 8; | |
2602 | if (i >= 0x8000) | |
2603 | glink_vma += 4; | |
2604 | } | |
2605 | else | |
468392fb AM |
2606 | glink_vma += 4; |
2607 | } | |
2608 | count += plt_count; | |
2609 | } | |
90e3cdf2 JJ |
2610 | } |
2611 | ||
c9727e01 | 2612 | done: |
a7535cf3 | 2613 | free (syms); |
90e3cdf2 JJ |
2614 | return count; |
2615 | } | |
5bd4f169 | 2616 | \f |
65f38f15 AM |
2617 | /* The following functions are specific to the ELF linker, while |
2618 | functions above are used generally. Those named ppc64_elf_* are | |
2619 | called by the main ELF linker code. They appear in this file more | |
2620 | or less in the order in which they are called. eg. | |
2621 | ppc64_elf_check_relocs is called early in the link process, | |
2622 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2623 | called. |
2624 | ||
2625 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2626 | functions have both a function code symbol and a function descriptor | |
2627 | symbol. A call to foo in a relocatable object file looks like: | |
2628 | ||
2629 | . .text | |
2630 | . x: | |
2631 | . bl .foo | |
2632 | . nop | |
2633 | ||
2634 | The function definition in another object file might be: | |
2635 | ||
2636 | . .section .opd | |
2637 | . foo: .quad .foo | |
2638 | . .quad .TOC.@tocbase | |
2639 | . .quad 0 | |
2640 | . | |
2641 | . .text | |
2642 | . .foo: blr | |
2643 | ||
2644 | When the linker resolves the call during a static link, the branch | |
2645 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2646 | If the function definition is in a shared library, things are a little | |
2647 | different: The call goes via a plt call stub, the opd information gets | |
2648 | copied to the plt, and the linker patches the nop. | |
2649 | ||
2650 | . x: | |
2651 | . bl .foo_stub | |
2652 | . ld 2,40(1) | |
2653 | . | |
2654 | . | |
2655 | . .foo_stub: | |
71a39c98 AM |
2656 | . std 2,40(1) # in practice, the call stub |
2657 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2658 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2659 | . ld 12,0(11) | |
2660 | . ld 2,8(11) | |
2661 | . mtctr 12 | |
2662 | . ld 11,16(11) | |
e86ce104 AM |
2663 | . bctr |
2664 | . | |
2665 | . .section .plt | |
2666 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2667 | ||
2668 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2669 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2670 | copying. | |
2671 | ||
2672 | What are the difficulties here? Well, firstly, the relocations | |
2673 | examined by the linker in check_relocs are against the function code | |
2674 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2675 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2676 | to carefully copy dynamic link information from one symbol to the other. | |
2677 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2678 | symbol as is normal for most other backends. We need foo dynamic | |
2679 | instead, at least for an application final link. However, when | |
2680 | creating a shared library containing foo, we need to have both symbols | |
2681 | dynamic so that references to .foo are satisfied during the early | |
2682 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2683 | definition from some other object, eg. a static library. |
2684 | ||
2685 | Update: As of August 2004, we support a new convention. Function | |
2686 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2687 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2688 | |
7c8bbca5 AM |
2689 | /* Of those relocs that might be copied as dynamic relocs, this |
2690 | function selects those that must be copied when linking a shared | |
2691 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2692 | |
1d483afe AM |
2693 | static int |
2694 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2695 | enum elf_ppc64_reloc_type r_type) | |
2696 | { | |
2697 | switch (r_type) | |
2698 | { | |
2699 | default: | |
7c8bbca5 AM |
2700 | /* Only relative relocs can be resolved when the object load |
2701 | address isn't fixed. DTPREL64 is excluded because the | |
2702 | dynamic linker needs to differentiate global dynamic from | |
2703 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2704 | return 1; |
2705 | ||
2706 | case R_PPC64_REL32: | |
2707 | case R_PPC64_REL64: | |
2708 | case R_PPC64_REL30: | |
2709 | return 0; | |
2710 | ||
2711 | case R_PPC64_TPREL16: | |
2712 | case R_PPC64_TPREL16_LO: | |
2713 | case R_PPC64_TPREL16_HI: | |
2714 | case R_PPC64_TPREL16_HA: | |
2715 | case R_PPC64_TPREL16_DS: | |
2716 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2717 | case R_PPC64_TPREL16_HIGH: |
2718 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2719 | case R_PPC64_TPREL16_HIGHER: |
2720 | case R_PPC64_TPREL16_HIGHERA: | |
2721 | case R_PPC64_TPREL16_HIGHEST: | |
2722 | case R_PPC64_TPREL16_HIGHESTA: | |
2723 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
2724 | /* These relocations are relative but in a shared library the |
2725 | linker doesn't know the thread pointer base. */ | |
2726 | return bfd_link_dll (info); | |
1d483afe AM |
2727 | } |
2728 | } | |
65f38f15 | 2729 | |
f4656909 AM |
2730 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2731 | copying dynamic variables from a shared lib into an app's dynbss | |
2732 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
2733 | shared lib. With code that gcc generates, it's vital that this be |
2734 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
2735 | the address of a function descriptor, which resides in the .opd | |
2736 | section. gcc uses the descriptor directly rather than going via the | |
2737 | GOT as some other ABI's do, which means that initialized function | |
2738 | pointers must reference the descriptor. Thus, a function pointer | |
2739 | initialized to the address of a function in a shared library will | |
2740 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 2741 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
2742 | presents a problem as a plt entry for that function is also |
2743 | initialized from the function descriptor symbol and the copy reloc | |
2744 | may not be initialized first. */ | |
a23b6845 | 2745 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2746 | |
721956f4 | 2747 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2748 | string. */ |
2749 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2750 | |
2751 | /* Linker stubs. | |
2752 | ppc_stub_long_branch: | |
2753 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2754 | destination, but a 24 bit branch in a stub section will reach. | |
2755 | . b dest | |
2756 | ||
2757 | ppc_stub_plt_branch: | |
2758 | Similar to the above, but a 24 bit branch in the stub section won't | |
2759 | reach its destination. | |
71a39c98 AM |
2760 | . addis %r11,%r2,xxx@toc@ha |
2761 | . ld %r12,xxx@toc@l(%r11) | |
2762 | . mtctr %r12 | |
721956f4 AM |
2763 | . bctr |
2764 | ||
2765 | ppc_stub_plt_call: | |
2c66dc6c AM |
2766 | Used to call a function in a shared library. If it so happens that |
2767 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2768 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2769 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2770 | . addis %r11,%r2,xxx@toc@ha |
2771 | . ld %r12,xxx+0@toc@l(%r11) | |
2772 | . mtctr %r12 | |
2773 | . ld %r2,xxx+8@toc@l(%r11) | |
2774 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2775 | . bctr |
ad8e1ba5 AM |
2776 | |
2777 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2778 | code to adjust the value and save r2 to support multiple toc sections. | |
2779 | A ppc_stub_long_branch with an r2 offset looks like: | |
2780 | . std %r2,40(%r1) | |
2781 | . addis %r2,%r2,off@ha | |
2782 | . addi %r2,%r2,off@l | |
2783 | . b dest | |
2784 | ||
2785 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2786 | . std %r2,40(%r1) | |
71a39c98 AM |
2787 | . addis %r11,%r2,xxx@toc@ha |
2788 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
2789 | . addis %r2,%r2,off@ha |
2790 | . addi %r2,%r2,off@l | |
71a39c98 | 2791 | . mtctr %r12 |
ad8e1ba5 | 2792 | . bctr |
ac2df442 | 2793 | |
05d0e962 AM |
2794 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2795 | variants exist too, simpler for plt calls since a new toc pointer | |
2796 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2797 | has some more complex stubs to handle calls marked with NOTOC | |
2798 | relocs from functions where r2 is not a valid toc pointer. These | |
2799 | come in two flavours, the ones shown below, and _both variants that | |
2800 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2801 | one call is from a function where r2 is used as the toc pointer but | |
2802 | needs a toc adjusting stub for small-model multi-toc, and another | |
2803 | call is from a function where r2 is not valid. | |
2804 | ppc_stub_long_branch_notoc: | |
2805 | . mflr %r12 | |
2806 | . bcl 20,31,1f | |
2807 | . 1: | |
2808 | . mflr %r11 | |
2809 | . mtlr %r12 | |
2cdcc330 AM |
2810 | . addis %r12,%r11,dest-1b@ha |
2811 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2812 | . b dest |
2813 | ||
2814 | ppc_stub_plt_branch_notoc: | |
2815 | . mflr %r12 | |
2816 | . bcl 20,31,1f | |
2817 | . 1: | |
2818 | . mflr %r11 | |
2819 | . mtlr %r12 | |
2820 | . lis %r12,xxx-1b@highest | |
f891966f | 2821 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2822 | . sldi %r12,%r12,32 |
f891966f | 2823 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2824 | . ori %r12,%r12,xxx-1b@l |
2825 | . add %r12,%r11,%r12 | |
2826 | . mtctr %r12 | |
2827 | . bctr | |
2828 | ||
2829 | ppc_stub_plt_call_notoc: | |
2830 | . mflr %r12 | |
2831 | . bcl 20,31,1f | |
2832 | . 1: | |
2833 | . mflr %r11 | |
2834 | . mtlr %r12 | |
2835 | . lis %r12,xxx-1b@highest | |
f891966f | 2836 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2837 | . sldi %r12,%r12,32 |
f891966f | 2838 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2839 | . ori %r12,%r12,xxx-1b@l |
2840 | . ldx %r12,%r11,%r12 | |
2841 | . mtctr %r12 | |
2842 | . bctr | |
2843 | ||
2844 | In cases where the high instructions would add zero, they are | |
2845 | omitted and following instructions modified in some cases. | |
2846 | ||
2847 | For a given stub group (a set of sections all using the same toc | |
2848 | pointer value) there will be just one stub type used for any | |
2849 | particular function symbol. For example, if printf is called from | |
2850 | code with the tocsave optimization (ie. r2 saved in function | |
2851 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2852 | and from other code without the tocsave optimization requiring a | |
2853 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2854 | type will be created. Calls with the tocsave optimization will | |
2855 | enter this stub after the instruction saving r2. A similar | |
2856 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2857 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2858 | to call an external function like printf. If other calls to printf | |
2859 | require a ppc_stub_plt_call linkage stub then a single | |
2860 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2861 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2862 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2863 | be created and calls not requiring r2 to be saved will enter the | |
2864 | stub after the r2 save instruction. There is an analogous | |
2865 | hierarchy of long branch and plt branch stubs for local call | |
2866 | linkage. */ | |
721956f4 | 2867 | |
2cdcc330 AM |
2868 | enum ppc_stub_type |
2869 | { | |
721956f4 AM |
2870 | ppc_stub_none, |
2871 | ppc_stub_long_branch, | |
ad8e1ba5 | 2872 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2873 | ppc_stub_long_branch_notoc, |
2874 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2875 | ppc_stub_plt_branch, |
ad8e1ba5 | 2876 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
2877 | ppc_stub_plt_branch_notoc, |
2878 | ppc_stub_plt_branch_both, | |
794e51c0 | 2879 | ppc_stub_plt_call, |
7341d5e2 | 2880 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
2881 | ppc_stub_plt_call_notoc, |
2882 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
2883 | ppc_stub_global_entry, |
2884 | ppc_stub_save_res | |
721956f4 AM |
2885 | }; |
2886 | ||
6f20ed8a AM |
2887 | /* Information on stub grouping. */ |
2888 | struct map_stub | |
2889 | { | |
2890 | /* The stub section. */ | |
2891 | asection *stub_sec; | |
2892 | /* This is the section to which stubs in the group will be attached. */ | |
2893 | asection *link_sec; | |
a4b6fadd AM |
2894 | /* Next group. */ |
2895 | struct map_stub *next; | |
2896 | /* Whether to emit a copy of register save/restore functions in this | |
2897 | group. */ | |
2898 | int needs_save_res; | |
df136d64 AM |
2899 | /* Current offset within stubs after the insn restoring lr in a |
2900 | _notoc or _both stub using bcl for pc-relative addressing, or | |
2901 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
2902 | unsigned int lr_restore; | |
2903 | /* Accumulated size of EH info emitted to describe return address | |
2904 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
2905 | unsigned int eh_size; | |
2906 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
2907 | unsigned int eh_base; | |
6f20ed8a AM |
2908 | }; |
2909 | ||
2cdcc330 AM |
2910 | struct ppc_stub_hash_entry |
2911 | { | |
721956f4 AM |
2912 | /* Base hash table entry structure. */ |
2913 | struct bfd_hash_entry root; | |
2914 | ||
ad8e1ba5 AM |
2915 | enum ppc_stub_type stub_type; |
2916 | ||
6f20ed8a AM |
2917 | /* Group information. */ |
2918 | struct map_stub *group; | |
721956f4 AM |
2919 | |
2920 | /* Offset within stub_sec of the beginning of this stub. */ | |
2921 | bfd_vma stub_offset; | |
2922 | ||
2923 | /* Given the symbol's value and its section we can determine its final | |
2924 | value when building the stubs (so the stub knows where to jump. */ | |
2925 | bfd_vma target_value; | |
2926 | asection *target_section; | |
2927 | ||
721956f4 AM |
2928 | /* The symbol table entry, if any, that this was derived from. */ |
2929 | struct ppc_link_hash_entry *h; | |
e054468f | 2930 | struct plt_entry *plt_ent; |
721956f4 | 2931 | |
2d7ad24e AM |
2932 | /* Symbol type. */ |
2933 | unsigned char symtype; | |
2934 | ||
6911b7dc AM |
2935 | /* Symbol st_other. */ |
2936 | unsigned char other; | |
721956f4 AM |
2937 | }; |
2938 | ||
2cdcc330 AM |
2939 | struct ppc_branch_hash_entry |
2940 | { | |
721956f4 AM |
2941 | /* Base hash table entry structure. */ |
2942 | struct bfd_hash_entry root; | |
2943 | ||
c456f082 | 2944 | /* Offset within branch lookup table. */ |
721956f4 AM |
2945 | unsigned int offset; |
2946 | ||
2947 | /* Generation marker. */ | |
2948 | unsigned int iter; | |
2949 | }; | |
65f38f15 | 2950 | |
19e08130 AM |
2951 | /* Used to track dynamic relocations for local symbols. */ |
2952 | struct ppc_dyn_relocs | |
2953 | { | |
2954 | struct ppc_dyn_relocs *next; | |
2955 | ||
2956 | /* The input section of the reloc. */ | |
2957 | asection *sec; | |
2958 | ||
2959 | /* Total number of relocs copied for the input section. */ | |
2960 | unsigned int count : 31; | |
2961 | ||
2962 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
2963 | unsigned int ifunc : 1; | |
2964 | }; | |
2965 | ||
65f38f15 AM |
2966 | struct ppc_link_hash_entry |
2967 | { | |
2968 | struct elf_link_hash_entry elf; | |
2969 | ||
2cdcc330 AM |
2970 | union |
2971 | { | |
b3fac117 AM |
2972 | /* A pointer to the most recently used stub hash entry against this |
2973 | symbol. */ | |
2974 | struct ppc_stub_hash_entry *stub_cache; | |
2975 | ||
2976 | /* A pointer to the next symbol starting with a '.' */ | |
2977 | struct ppc_link_hash_entry *next_dot_sym; | |
2978 | } u; | |
721956f4 | 2979 | |
65f38f15 | 2980 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 2981 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 2982 | |
721956f4 | 2983 | /* Link between function code and descriptor symbols. */ |
34814b9f | 2984 | struct ppc_link_hash_entry *oh; |
721956f4 | 2985 | |
e86ce104 AM |
2986 | /* Flag function code and descriptor symbols. */ |
2987 | unsigned int is_func:1; | |
2988 | unsigned int is_func_descriptor:1; | |
908b32fc | 2989 | unsigned int fake:1; |
411e1bfb | 2990 | |
c5614fa4 AM |
2991 | /* Whether global opd/toc sym has been adjusted or not. |
2992 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
2993 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
2994 | unsigned int adjust_done:1; |
2995 | ||
a4b6fadd AM |
2996 | /* Set if this is an out-of-line register save/restore function, |
2997 | with non-standard calling convention. */ | |
2998 | unsigned int save_res:1; | |
2999 | ||
8b5f1ed8 AM |
3000 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3001 | even when the duplicate symbol does not provide a definition. */ | |
3002 | unsigned int non_zero_localentry:1; | |
3003 | ||
411e1bfb | 3004 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3005 | Bits are or'd into the mask as the corresponding relocs are |
3006 | encountered during check_relocs, with TLS_TLS being set when any | |
3007 | of the other TLS bits are set. tls_optimize clears bits when | |
3008 | optimizing to indicate the corresponding GOT entry type is not | |
3009 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
3010 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
3011 | separate flag rather than setting TPREL just for convenience in | |
3012 | distinguishing the two cases. | |
3013 | These flags are also kept for local symbols. */ | |
3014 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3015 | #define TLS_GD 2 /* GD reloc. */ | |
3016 | #define TLS_LD 4 /* LD reloc. */ | |
3017 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3018 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3019 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 3020 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 3021 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 3022 | unsigned char tls_mask; |
37da22e5 AM |
3023 | |
3024 | /* The above field is also used to mark function symbols. In which | |
3025 | case TLS_TLS will be 0. */ | |
3026 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3027 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3028 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3029 | }; |
3030 | ||
3031 | /* ppc64 ELF linker hash table. */ | |
3032 | ||
3033 | struct ppc_link_hash_table | |
3034 | { | |
3035 | struct elf_link_hash_table elf; | |
3036 | ||
721956f4 AM |
3037 | /* The stub hash table. */ |
3038 | struct bfd_hash_table stub_hash_table; | |
3039 | ||
3040 | /* Another hash table for plt_branch stubs. */ | |
3041 | struct bfd_hash_table branch_hash_table; | |
3042 | ||
3b421ab3 AM |
3043 | /* Hash table for function prologue tocsave. */ |
3044 | htab_t tocsave_htab; | |
3045 | ||
e7d1c40c AM |
3046 | /* Various options and other info passed from the linker. */ |
3047 | struct ppc64_elf_params *params; | |
721956f4 | 3048 | |
6f20ed8a AM |
3049 | /* The size of sec_info below. */ |
3050 | unsigned int sec_info_arr_size; | |
3051 | ||
3052 | /* Per-section array of extra section info. Done this way rather | |
3053 | than as part of ppc64_elf_section_data so we have the info for | |
3054 | non-ppc64 sections. */ | |
3055 | struct | |
3056 | { | |
3057 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3058 | bfd_vma toc_off; |
6f20ed8a AM |
3059 | |
3060 | union | |
3061 | { | |
3062 | /* The section group that this section belongs to. */ | |
3063 | struct map_stub *group; | |
3064 | /* A temp section list pointer. */ | |
3065 | asection *list; | |
3066 | } u; | |
3067 | } *sec_info; | |
721956f4 | 3068 | |
a4b6fadd AM |
3069 | /* Linked list of groups. */ |
3070 | struct map_stub *group; | |
3071 | ||
ad8e1ba5 AM |
3072 | /* Temp used when calculating TOC pointers. */ |
3073 | bfd_vma toc_curr; | |
bf102f86 AM |
3074 | bfd *toc_bfd; |
3075 | asection *toc_first_sec; | |
ad8e1ba5 | 3076 | |
b3fac117 AM |
3077 | /* Used when adding symbols. */ |
3078 | struct ppc_link_hash_entry *dot_syms; | |
3079 | ||
33e44f2e | 3080 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3081 | asection *glink; |
9e390558 | 3082 | asection *global_entry; |
82bd7b59 | 3083 | asection *sfpr; |
2d7ad24e AM |
3084 | asection *pltlocal; |
3085 | asection *relpltlocal; | |
4ce794b7 AM |
3086 | asection *brlt; |
3087 | asection *relbrlt; | |
58d180e8 | 3088 | asection *glink_eh_frame; |
ec338859 | 3089 | |
8387904d AM |
3090 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3091 | struct ppc_link_hash_entry *tls_get_addr; | |
3092 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3093 | |
927be08e AM |
3094 | /* The size of reliplt used by got entry relocs. */ |
3095 | bfd_size_type got_reli_size; | |
3096 | ||
9b5ecbd0 | 3097 | /* Statistics. */ |
7341d5e2 | 3098 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3099 | |
ee75fd95 AM |
3100 | /* Number of stubs against global syms. */ |
3101 | unsigned long stub_globals; | |
3102 | ||
ee67d69a AM |
3103 | /* Set if we're linking code with function descriptors. */ |
3104 | unsigned int opd_abi:1; | |
3105 | ||
4c52953f | 3106 | /* Support for multiple toc sections. */ |
33c0ec9d | 3107 | unsigned int do_multi_toc:1; |
4c52953f | 3108 | unsigned int multi_toc_needed:1; |
927be08e | 3109 | unsigned int second_toc_pass:1; |
67f0cbdb | 3110 | unsigned int do_toc_opt:1; |
4c52953f | 3111 | |
9a23f96e AM |
3112 | /* Set if tls optimization is enabled. */ |
3113 | unsigned int do_tls_opt:1; | |
3114 | ||
3e04d765 AM |
3115 | /* Set if inline plt calls should be converted to direct calls. */ |
3116 | unsigned int can_convert_all_inline_plt:1; | |
3117 | ||
5d1634d7 | 3118 | /* Set on error. */ |
99877b66 | 3119 | unsigned int stub_error:1; |
721956f4 | 3120 | |
8c5b4e52 AM |
3121 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3122 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3123 | |
82e66161 AM |
3124 | /* Whether there exist local gnu indirect function resolvers, |
3125 | referenced by dynamic relocations. */ | |
3126 | unsigned int local_ifunc_resolver:1; | |
3127 | unsigned int maybe_local_ifunc_resolver:1; | |
3128 | ||
f378ab09 AM |
3129 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3130 | unsigned int has_plt_localentry0:1; | |
3131 | ||
5663e321 AM |
3132 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3133 | unsigned int notoc_plt:1; | |
3134 | ||
721956f4 AM |
3135 | /* Incremented every time we size stubs. */ |
3136 | unsigned int stub_iteration; | |
5d1634d7 | 3137 | |
87d72d41 AM |
3138 | /* Small local sym cache. */ |
3139 | struct sym_cache sym_cache; | |
65f38f15 AM |
3140 | }; |
3141 | ||
4c52953f AM |
3142 | /* Rename some of the generic section flags to better document how they |
3143 | are used here. */ | |
b0dddeec AM |
3144 | |
3145 | /* Nonzero if this section has TLS related relocations. */ | |
3146 | #define has_tls_reloc sec_flg0 | |
3147 | ||
23cedd1d | 3148 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
3149 | #define has_tls_get_addr_call sec_flg1 |
3150 | ||
3151 | /* Nonzero if this section has any toc or got relocs. */ | |
3152 | #define has_toc_reloc sec_flg2 | |
3153 | ||
3154 | /* Nonzero if this section has a call to another section that uses | |
3155 | the toc or got. */ | |
d77c8a4b | 3156 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3157 | |
3158 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3159 | #define call_check_in_progress sec_flg4 |
70cc837d | 3160 | #define call_check_done sec_flg5 |
4c52953f | 3161 | |
65f38f15 AM |
3162 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3163 | ||
3164 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3165 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3166 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3167 | |
721956f4 AM |
3168 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3169 | ((struct ppc_stub_hash_entry *) \ | |
3170 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3171 | ||
3172 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3173 | ((struct ppc_branch_hash_entry *) \ | |
3174 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3175 | ||
3176 | /* Create an entry in the stub hash table. */ | |
3177 | ||
3178 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3179 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3180 | struct bfd_hash_table *table, | |
3181 | const char *string) | |
721956f4 AM |
3182 | { |
3183 | /* Allocate the structure if it has not already been allocated by a | |
3184 | subclass. */ | |
3185 | if (entry == NULL) | |
3186 | { | |
3187 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3188 | if (entry == NULL) | |
3189 | return entry; | |
3190 | } | |
3191 | ||
3192 | /* Call the allocation method of the superclass. */ | |
3193 | entry = bfd_hash_newfunc (entry, table, string); | |
3194 | if (entry != NULL) | |
3195 | { | |
3196 | struct ppc_stub_hash_entry *eh; | |
3197 | ||
3198 | /* Initialize the local fields. */ | |
3199 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3200 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3201 | eh->group = NULL; |
721956f4 AM |
3202 | eh->stub_offset = 0; |
3203 | eh->target_value = 0; | |
3204 | eh->target_section = NULL; | |
721956f4 | 3205 | eh->h = NULL; |
6911b7dc | 3206 | eh->plt_ent = NULL; |
6911b7dc | 3207 | eh->other = 0; |
721956f4 AM |
3208 | } |
3209 | ||
3210 | return entry; | |
3211 | } | |
3212 | ||
3213 | /* Create an entry in the branch hash table. */ | |
3214 | ||
3215 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3216 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3217 | struct bfd_hash_table *table, | |
3218 | const char *string) | |
721956f4 AM |
3219 | { |
3220 | /* Allocate the structure if it has not already been allocated by a | |
3221 | subclass. */ | |
3222 | if (entry == NULL) | |
3223 | { | |
3224 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3225 | if (entry == NULL) | |
3226 | return entry; | |
3227 | } | |
3228 | ||
3229 | /* Call the allocation method of the superclass. */ | |
3230 | entry = bfd_hash_newfunc (entry, table, string); | |
3231 | if (entry != NULL) | |
3232 | { | |
3233 | struct ppc_branch_hash_entry *eh; | |
3234 | ||
3235 | /* Initialize the local fields. */ | |
3236 | eh = (struct ppc_branch_hash_entry *) entry; | |
3237 | eh->offset = 0; | |
3238 | eh->iter = 0; | |
3239 | } | |
3240 | ||
3241 | return entry; | |
3242 | } | |
3243 | ||
65f38f15 AM |
3244 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3245 | ||
3246 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3247 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3248 | struct bfd_hash_table *table, | |
3249 | const char *string) | |
65f38f15 AM |
3250 | { |
3251 | /* Allocate the structure if it has not already been allocated by a | |
3252 | subclass. */ | |
3253 | if (entry == NULL) | |
3254 | { | |
3255 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3256 | if (entry == NULL) | |
3257 | return entry; | |
3258 | } | |
3259 | ||
3260 | /* Call the allocation method of the superclass. */ | |
3261 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3262 | if (entry != NULL) | |
3263 | { | |
3264 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3265 | ||
b3fac117 | 3266 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3267 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3268 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3269 | ||
3270 | /* When making function calls, old ABI code references function entry | |
3271 | points (dot symbols), while new ABI code references the function | |
3272 | descriptor symbol. We need to make any combination of reference and | |
3273 | definition work together, without breaking archive linking. | |
3274 | ||
3275 | For a defined function "foo" and an undefined call to "bar": | |
3276 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3277 | "bar" too). | |
3278 | A new object defines "foo" and references "bar". | |
3279 | ||
3280 | A new object thus has no problem with its undefined symbols being | |
3281 | satisfied by definitions in an old object. On the other hand, the | |
3282 | old object won't have ".bar" satisfied by a new object. | |
3283 | ||
3284 | Keep a list of newly added dot-symbols. */ | |
3285 | ||
3286 | if (string[0] == '.') | |
3287 | { | |
3288 | struct ppc_link_hash_table *htab; | |
3289 | ||
3290 | htab = (struct ppc_link_hash_table *) table; | |
3291 | eh->u.next_dot_sym = htab->dot_syms; | |
3292 | htab->dot_syms = eh; | |
3293 | } | |
65f38f15 AM |
3294 | } |
3295 | ||
3296 | return entry; | |
3297 | } | |
3298 | ||
2cdcc330 AM |
3299 | struct tocsave_entry |
3300 | { | |
3b421ab3 AM |
3301 | asection *sec; |
3302 | bfd_vma offset; | |
3303 | }; | |
3304 | ||
3305 | static hashval_t | |
3306 | tocsave_htab_hash (const void *p) | |
3307 | { | |
3308 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3309 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3310 | } |
3311 | ||
3312 | static int | |
3313 | tocsave_htab_eq (const void *p1, const void *p2) | |
3314 | { | |
3315 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3316 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3317 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3318 | } | |
3319 | ||
68faa637 AM |
3320 | /* Destroy a ppc64 ELF linker hash table. */ |
3321 | ||
3322 | static void | |
d495ab0d | 3323 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3324 | { |
d495ab0d | 3325 | struct ppc_link_hash_table *htab; |
68faa637 | 3326 | |
d495ab0d | 3327 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3328 | if (htab->tocsave_htab) |
3329 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3330 | bfd_hash_table_free (&htab->branch_hash_table); |
3331 | bfd_hash_table_free (&htab->stub_hash_table); | |
3332 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3333 | } |
3334 | ||
65f38f15 AM |
3335 | /* Create a ppc64 ELF linker hash table. */ |
3336 | ||
3337 | static struct bfd_link_hash_table * | |
4ce794b7 | 3338 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3339 | { |
3340 | struct ppc_link_hash_table *htab; | |
3341 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3342 | ||
4ce794b7 | 3343 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3344 | if (htab == NULL) |
3345 | return NULL; | |
3346 | ||
66eb6687 | 3347 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3348 | sizeof (struct ppc_link_hash_entry), |
3349 | PPC64_ELF_DATA)) | |
65f38f15 | 3350 | { |
e2d34d7d | 3351 | free (htab); |
65f38f15 AM |
3352 | return NULL; |
3353 | } | |
3354 | ||
721956f4 | 3355 | /* Init the stub hash table too. */ |
66eb6687 AM |
3356 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3357 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3358 | { |
d495ab0d | 3359 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3360 | return NULL; |
3361 | } | |
721956f4 AM |
3362 | |
3363 | /* And the branch hash table. */ | |
66eb6687 AM |
3364 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3365 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3366 | { |
3367 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3368 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3369 | return NULL; |
3370 | } | |
721956f4 | 3371 | |
3b421ab3 AM |
3372 | htab->tocsave_htab = htab_try_create (1024, |
3373 | tocsave_htab_hash, | |
3374 | tocsave_htab_eq, | |
3375 | NULL); | |
3376 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3377 | { |
d495ab0d | 3378 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3379 | return NULL; |
3380 | } | |
d495ab0d | 3381 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3382 | |
3254fd24 AM |
3383 | /* Initializing two fields of the union is just cosmetic. We really |
3384 | only care about glist, but when compiled on a 32-bit host the | |
3385 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3386 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3387 | htab->elf.init_got_refcount.refcount = 0; |
3388 | htab->elf.init_got_refcount.glist = NULL; | |
3389 | htab->elf.init_plt_refcount.refcount = 0; | |
3390 | htab->elf.init_plt_refcount.glist = NULL; | |
3391 | htab->elf.init_got_offset.offset = 0; | |
3392 | htab->elf.init_got_offset.glist = NULL; | |
3393 | htab->elf.init_plt_offset.offset = 0; | |
3394 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3395 | |
65f38f15 AM |
3396 | return &htab->elf.root; |
3397 | } | |
3398 | ||
bfeb4a28 AM |
3399 | /* Create sections for linker generated code. */ |
3400 | ||
3401 | static bfd_boolean | |
3402 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3403 | { | |
3404 | struct ppc_link_hash_table *htab; | |
3405 | flagword flags; | |
3406 | ||
3407 | htab = ppc_hash_table (info); | |
3408 | ||
bfeb4a28 AM |
3409 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3410 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3411 | if (htab->params->save_restore_funcs) |
3412 | { | |
3413 | /* Create .sfpr for code to save and restore fp regs. */ | |
3414 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3415 | flags); | |
3416 | if (htab->sfpr == NULL | |
2cdcc330 | 3417 | || !bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b32547cd AM |
3418 | return FALSE; |
3419 | } | |
3420 | ||
3421 | if (bfd_link_relocatable (info)) | |
3422 | return TRUE; | |
bfeb4a28 AM |
3423 | |
3424 | /* Create .glink for lazy dynamic linking support. */ | |
3425 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3426 | flags); | |
3427 | if (htab->glink == NULL | |
2cdcc330 | 3428 | || !bfd_set_section_alignment (dynobj, htab->glink, 3)) |
bfeb4a28 AM |
3429 | return FALSE; |
3430 | ||
9e390558 AM |
3431 | /* The part of .glink used by global entry stubs, separate so that |
3432 | it can be aligned appropriately without affecting htab->glink. */ | |
3433 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3434 | flags); | |
3435 | if (htab->global_entry == NULL | |
2cdcc330 | 3436 | || !bfd_set_section_alignment (dynobj, htab->global_entry, 2)) |
9e390558 AM |
3437 | return FALSE; |
3438 | ||
bfeb4a28 AM |
3439 | if (!info->no_ld_generated_unwind_info) |
3440 | { | |
3441 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3442 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3443 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3444 | ".eh_frame", | |
3445 | flags); | |
3446 | if (htab->glink_eh_frame == NULL | |
3447 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
3448 | return FALSE; | |
3449 | } | |
3450 | ||
3451 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3452 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3453 | if (htab->elf.iplt == NULL | |
2cdcc330 | 3454 | || !bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) |
bfeb4a28 AM |
3455 | return FALSE; |
3456 | ||
3457 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3458 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3459 | htab->elf.irelplt |
3460 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3461 | if (htab->elf.irelplt == NULL | |
2cdcc330 | 3462 | || !bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3463 | return FALSE; |
3464 | ||
3465 | /* Create branch lookup table for plt_branch stubs. */ | |
3466 | flags = (SEC_ALLOC | SEC_LOAD | |
3467 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3468 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3469 | flags); | |
3470 | if (htab->brlt == NULL | |
2cdcc330 | 3471 | || !bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
bfeb4a28 AM |
3472 | return FALSE; |
3473 | ||
2d7ad24e AM |
3474 | /* Local plt entries, put in .branch_lt but a separate section for |
3475 | convenience. */ | |
3476 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3477 | flags); | |
3478 | if (htab->pltlocal == NULL | |
2cdcc330 | 3479 | || !bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) |
2d7ad24e AM |
3480 | return FALSE; |
3481 | ||
0e1862bb | 3482 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3483 | return TRUE; |
3484 | ||
3485 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3486 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3487 | htab->relbrlt |
3488 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3489 | if (htab->relbrlt == NULL |
2cdcc330 | 3490 | || !bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
bfeb4a28 AM |
3491 | return FALSE; |
3492 | ||
2d7ad24e AM |
3493 | htab->relpltlocal |
3494 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3495 | if (htab->relpltlocal == NULL | |
2cdcc330 | 3496 | || !bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) |
2d7ad24e AM |
3497 | return FALSE; |
3498 | ||
bfeb4a28 AM |
3499 | return TRUE; |
3500 | } | |
3501 | ||
e717da7e AM |
3502 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3503 | ||
bfeb4a28 | 3504 | bfd_boolean |
e7d1c40c AM |
3505 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3506 | struct ppc64_elf_params *params) | |
e717da7e AM |
3507 | { |
3508 | struct ppc_link_hash_table *htab; | |
3509 | ||
e7d1c40c | 3510 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3511 | |
3512 | /* Always hook our dynamic sections into the first bfd, which is the | |
3513 | linker created stub bfd. This ensures that the GOT header is at | |
3514 | the start of the output TOC section. */ | |
3515 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3516 | htab->elf.dynobj = params->stub_bfd; |
3517 | htab->params = params; | |
bfeb4a28 | 3518 | |
bfeb4a28 | 3519 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3520 | } |
3521 | ||
721956f4 AM |
3522 | /* Build a name for an entry in the stub hash table. */ |
3523 | ||
3524 | static char * | |
4ce794b7 AM |
3525 | ppc_stub_name (const asection *input_section, |
3526 | const asection *sym_sec, | |
3527 | const struct ppc_link_hash_entry *h, | |
3528 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3529 | { |
3530 | char *stub_name; | |
bcaa2f82 | 3531 | ssize_t len; |
721956f4 AM |
3532 | |
3533 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3534 | offsets from a sym as a branch target? In fact, we could | |
3535 | probably assume the addend is always zero. */ | |
3536 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3537 | ||
3538 | if (h) | |
3539 | { | |
3540 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3541 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3542 | if (stub_name == NULL) |
3543 | return stub_name; | |
3544 | ||
bcaa2f82 AM |
3545 | len = sprintf (stub_name, "%08x.%s+%x", |
3546 | input_section->id & 0xffffffff, | |
3547 | h->elf.root.root.string, | |
3548 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3549 | } |
3550 | else | |
3551 | { | |
ad8e1ba5 | 3552 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3553 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3554 | if (stub_name == NULL) |
3555 | return stub_name; | |
3556 | ||
bcaa2f82 AM |
3557 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3558 | input_section->id & 0xffffffff, | |
3559 | sym_sec->id & 0xffffffff, | |
3560 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3561 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3562 | } |
bcaa2f82 | 3563 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3564 | stub_name[len - 2] = 0; |
721956f4 AM |
3565 | return stub_name; |
3566 | } | |
3567 | ||
3568 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3569 | creating the stub name takes a bit of time. */ | |
3570 | ||
3571 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3572 | ppc_get_stub_entry (const asection *input_section, |
3573 | const asection *sym_sec, | |
039b3fef | 3574 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3575 | const Elf_Internal_Rela *rel, |
3576 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3577 | { |
3578 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3579 | struct map_stub *group; |
721956f4 AM |
3580 | |
3581 | /* If this input section is part of a group of sections sharing one | |
3582 | stub section, then use the id of the first section in the group. | |
3583 | Stub names need to include a section id, as there may well be | |
3584 | more than one stub used to reach say, printf, and we need to | |
3585 | distinguish between them. */ | |
6f20ed8a | 3586 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3587 | if (group == NULL) |
3588 | return NULL; | |
721956f4 | 3589 | |
b3fac117 AM |
3590 | if (h != NULL && h->u.stub_cache != NULL |
3591 | && h->u.stub_cache->h == h | |
6f20ed8a | 3592 | && h->u.stub_cache->group == group) |
721956f4 | 3593 | { |
b3fac117 | 3594 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3595 | } |
3596 | else | |
3597 | { | |
3598 | char *stub_name; | |
3599 | ||
6f20ed8a | 3600 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3601 | if (stub_name == NULL) |
3602 | return NULL; | |
3603 | ||
3604 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3605 | stub_name, FALSE, FALSE); |
721956f4 | 3606 | if (h != NULL) |
b3fac117 | 3607 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3608 | |
3609 | free (stub_name); | |
3610 | } | |
3611 | ||
3612 | return stub_entry; | |
3613 | } | |
3614 | ||
3615 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3616 | stub entry are initialised. */ | |
3617 | ||
3618 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3619 | ppc_add_stub (const char *stub_name, |
3620 | asection *section, | |
25f53a85 | 3621 | struct bfd_link_info *info) |
721956f4 | 3622 | { |
25f53a85 | 3623 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3624 | struct map_stub *group; |
721956f4 AM |
3625 | asection *link_sec; |
3626 | asection *stub_sec; | |
3627 | struct ppc_stub_hash_entry *stub_entry; | |
3628 | ||
6f20ed8a AM |
3629 | group = htab->sec_info[section->id].u.group; |
3630 | link_sec = group->link_sec; | |
3631 | stub_sec = group->stub_sec; | |
721956f4 AM |
3632 | if (stub_sec == NULL) |
3633 | { | |
6f20ed8a AM |
3634 | size_t namelen; |
3635 | bfd_size_type len; | |
3636 | char *s_name; | |
721956f4 | 3637 | |
6f20ed8a AM |
3638 | namelen = strlen (link_sec->name); |
3639 | len = namelen + sizeof (STUB_SUFFIX); | |
3640 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3641 | if (s_name == NULL) | |
3642 | return NULL; | |
721956f4 | 3643 | |
6f20ed8a AM |
3644 | memcpy (s_name, link_sec->name, namelen); |
3645 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3646 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3647 | if (stub_sec == NULL) | |
3648 | return NULL; | |
3649 | group->stub_sec = stub_sec; | |
721956f4 AM |
3650 | } |
3651 | ||
3652 | /* Enter this entry into the linker stub hash table. */ | |
3653 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3654 | TRUE, FALSE); |
721956f4 AM |
3655 | if (stub_entry == NULL) |
3656 | { | |
695344c0 | 3657 | /* xgettext:c-format */ |
cf97bcb0 AM |
3658 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3659 | section->owner, stub_name); | |
721956f4 AM |
3660 | return NULL; |
3661 | } | |
3662 | ||
6f20ed8a | 3663 | stub_entry->group = group; |
721956f4 | 3664 | stub_entry->stub_offset = 0; |
721956f4 AM |
3665 | return stub_entry; |
3666 | } | |
3667 | ||
e717da7e AM |
3668 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3669 | not already done. */ | |
65f38f15 | 3670 | |
b34976b6 | 3671 | static bfd_boolean |
e717da7e | 3672 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3673 | { |
e717da7e AM |
3674 | asection *got, *relgot; |
3675 | flagword flags; | |
3676 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3677 | |
0c8d6e5c | 3678 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3679 | return FALSE; |
4dfe6ac6 NC |
3680 | if (htab == NULL) |
3681 | return FALSE; | |
0ffa91dd | 3682 | |
33e44f2e AM |
3683 | if (!htab->elf.sgot |
3684 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3685 | return FALSE; | |
e717da7e AM |
3686 | |
3687 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3688 | | SEC_LINKER_CREATED); | |
3689 | ||
c456f082 | 3690 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3691 | if (!got |
e717da7e AM |
3692 | || !bfd_set_section_alignment (abfd, got, 3)) |
3693 | return FALSE; | |
65f38f15 | 3694 | |
c456f082 AM |
3695 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3696 | flags | SEC_READONLY); | |
e717da7e | 3697 | if (!relgot |
2cdcc330 | 3698 | || !bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3699 | return FALSE; |
e717da7e AM |
3700 | |
3701 | ppc64_elf_tdata (abfd)->got = got; | |
3702 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3703 | return TRUE; |
65f38f15 | 3704 | } |
5bd4f169 | 3705 | |
b31867b6 AM |
3706 | /* Follow indirect and warning symbol links. */ |
3707 | ||
3708 | static inline struct bfd_link_hash_entry * | |
3709 | follow_link (struct bfd_link_hash_entry *h) | |
3710 | { | |
3711 | while (h->type == bfd_link_hash_indirect | |
3712 | || h->type == bfd_link_hash_warning) | |
3713 | h = h->u.i.link; | |
3714 | return h; | |
3715 | } | |
3716 | ||
3717 | static inline struct elf_link_hash_entry * | |
3718 | elf_follow_link (struct elf_link_hash_entry *h) | |
3719 | { | |
3720 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3721 | } | |
3722 | ||
3723 | static inline struct ppc_link_hash_entry * | |
3724 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3725 | { | |
3726 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
3727 | } | |
3728 | ||
40d16e0b AM |
3729 | /* Merge PLT info on FROM with that on TO. */ |
3730 | ||
3731 | static void | |
3732 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3733 | struct ppc_link_hash_entry *to) | |
3734 | { | |
3735 | if (from->elf.plt.plist != NULL) | |
3736 | { | |
3737 | if (to->elf.plt.plist != NULL) | |
3738 | { | |
3739 | struct plt_entry **entp; | |
3740 | struct plt_entry *ent; | |
3741 | ||
3742 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3743 | { | |
3744 | struct plt_entry *dent; | |
3745 | ||
3746 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3747 | if (dent->addend == ent->addend) | |
3748 | { | |
3749 | dent->plt.refcount += ent->plt.refcount; | |
3750 | *entp = ent->next; | |
3751 | break; | |
3752 | } | |
3753 | if (dent == NULL) | |
3754 | entp = &ent->next; | |
3755 | } | |
3756 | *entp = to->elf.plt.plist; | |
3757 | } | |
3758 | ||
3759 | to->elf.plt.plist = from->elf.plt.plist; | |
3760 | from->elf.plt.plist = NULL; | |
3761 | } | |
3762 | } | |
3763 | ||
65f38f15 AM |
3764 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3765 | ||
3766 | static void | |
fcfa13d2 AM |
3767 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3768 | struct elf_link_hash_entry *dir, | |
3769 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3770 | { |
3771 | struct ppc_link_hash_entry *edir, *eind; | |
3772 | ||
3773 | edir = (struct ppc_link_hash_entry *) dir; | |
3774 | eind = (struct ppc_link_hash_entry *) ind; | |
3775 | ||
c79d6685 AM |
3776 | edir->is_func |= eind->is_func; |
3777 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3778 | edir->tls_mask |= eind->tls_mask; | |
3779 | if (eind->oh != NULL) | |
3780 | edir->oh = ppc_follow_link (eind->oh); | |
3781 | ||
474436e6 | 3782 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3783 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3784 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3785 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3786 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3787 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3788 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3789 | |
d311bc8b AM |
3790 | /* If we were called to copy over info for a weak sym, don't copy |
3791 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3792 | in order to simplify readonly_dynrelocs and save a field in the | |
3793 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3794 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3795 | are then tested. */ |
d311bc8b | 3796 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3797 | return; |
d311bc8b | 3798 | |
411e1bfb | 3799 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3800 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3801 | { |
bbd7ec4a AM |
3802 | if (edir->dyn_relocs != NULL) |
3803 | { | |
6061a67d AM |
3804 | struct elf_dyn_relocs **pp; |
3805 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3806 | |
fcfa13d2 | 3807 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3808 | list. Merge any entries against the same section. */ |
3809 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3810 | { | |
6061a67d | 3811 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
3812 | |
3813 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3814 | if (q->sec == p->sec) | |
3815 | { | |
3816 | q->pc_count += p->pc_count; | |
3817 | q->count += p->count; | |
3818 | *pp = p->next; | |
3819 | break; | |
3820 | } | |
3821 | if (q == NULL) | |
3822 | pp = &p->next; | |
3823 | } | |
3824 | *pp = edir->dyn_relocs; | |
3825 | } | |
3826 | ||
65f38f15 AM |
3827 | edir->dyn_relocs = eind->dyn_relocs; |
3828 | eind->dyn_relocs = NULL; | |
3829 | } | |
65f38f15 | 3830 | |
81848ca0 AM |
3831 | /* Copy over got entries that we may have already seen to the |
3832 | symbol which just became indirect. */ | |
411e1bfb AM |
3833 | if (eind->elf.got.glist != NULL) |
3834 | { | |
3835 | if (edir->elf.got.glist != NULL) | |
3836 | { | |
3837 | struct got_entry **entp; | |
3838 | struct got_entry *ent; | |
3839 | ||
3840 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3841 | { | |
3842 | struct got_entry *dent; | |
3843 | ||
3844 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3845 | if (dent->addend == ent->addend | |
e717da7e | 3846 | && dent->owner == ent->owner |
411e1bfb AM |
3847 | && dent->tls_type == ent->tls_type) |
3848 | { | |
3849 | dent->got.refcount += ent->got.refcount; | |
3850 | *entp = ent->next; | |
3851 | break; | |
3852 | } | |
3853 | if (dent == NULL) | |
3854 | entp = &ent->next; | |
3855 | } | |
3856 | *entp = edir->elf.got.glist; | |
3857 | } | |
3858 | ||
3859 | edir->elf.got.glist = eind->elf.got.glist; | |
3860 | eind->elf.got.glist = NULL; | |
3861 | } | |
3862 | ||
3863 | /* And plt entries. */ | |
40d16e0b | 3864 | move_plt_plist (eind, edir); |
411e1bfb | 3865 | |
fcfa13d2 | 3866 | if (eind->elf.dynindx != -1) |
411e1bfb | 3867 | { |
fcfa13d2 AM |
3868 | if (edir->elf.dynindx != -1) |
3869 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3870 | edir->elf.dynstr_index); | |
411e1bfb AM |
3871 | edir->elf.dynindx = eind->elf.dynindx; |
3872 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3873 | eind->elf.dynindx = -1; | |
3874 | eind->elf.dynstr_index = 0; | |
3875 | } | |
411e1bfb AM |
3876 | } |
3877 | ||
8387904d AM |
3878 | /* Find the function descriptor hash entry from the given function code |
3879 | hash entry FH. Link the entries via their OH fields. */ | |
3880 | ||
3881 | static struct ppc_link_hash_entry * | |
b31867b6 | 3882 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
3883 | { |
3884 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3885 | ||
3886 | if (fdh == NULL) | |
3887 | { | |
3888 | const char *fd_name = fh->elf.root.root.string + 1; | |
3889 | ||
3890 | fdh = (struct ppc_link_hash_entry *) | |
3891 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
3892 | if (fdh == NULL) |
3893 | return fdh; | |
3894 | ||
3895 | fdh->is_func_descriptor = 1; | |
3896 | fdh->oh = fh; | |
3897 | fh->is_func = 1; | |
3898 | fh->oh = fdh; | |
8387904d AM |
3899 | } |
3900 | ||
8c5b4e52 AM |
3901 | fdh = ppc_follow_link (fdh); |
3902 | fdh->is_func_descriptor = 1; | |
3903 | fdh->oh = fh; | |
3904 | return fdh; | |
8387904d AM |
3905 | } |
3906 | ||
8c5b4e52 | 3907 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
3908 | |
3909 | static struct ppc_link_hash_entry * | |
3910 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 3911 | struct ppc_link_hash_entry *fh) |
bb700d78 | 3912 | { |
8c5b4e52 AM |
3913 | bfd *abfd = fh->elf.root.u.undef.abfd; |
3914 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 3915 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
3916 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
3917 | ? BSF_WEAK | |
3918 | : BSF_GLOBAL); | |
3919 | ||
3920 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
3921 | fh->elf.root.root.string + 1, | |
3922 | flags, bfd_und_section_ptr, 0, | |
3923 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
3924 | return NULL; |
3925 | ||
3926 | fdh = (struct ppc_link_hash_entry *) bh; | |
3927 | fdh->elf.non_elf = 0; | |
908b32fc AM |
3928 | fdh->fake = 1; |
3929 | fdh->is_func_descriptor = 1; | |
3930 | fdh->oh = fh; | |
3931 | fh->is_func = 1; | |
3932 | fh->oh = fdh; | |
bb700d78 AM |
3933 | return fdh; |
3934 | } | |
3935 | ||
8387904d AM |
3936 | /* Fix function descriptor symbols defined in .opd sections to be |
3937 | function type. */ | |
555cd476 AM |
3938 | |
3939 | static bfd_boolean | |
c16153ae | 3940 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 3941 | struct bfd_link_info *info, |
555cd476 | 3942 | Elf_Internal_Sym *isym, |
6911b7dc | 3943 | const char **name, |
555cd476 AM |
3944 | flagword *flags ATTRIBUTE_UNUSED, |
3945 | asection **sec, | |
b53dfeb2 | 3946 | bfd_vma *value) |
555cd476 | 3947 | { |
b53dfeb2 | 3948 | if (*sec != NULL |
f1885d1e | 3949 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
3950 | { |
3951 | asection *code_sec; | |
3952 | ||
3953 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
3954 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
3955 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
3956 | ||
3957 | /* If the symbol is a function defined in .opd, and the function | |
3958 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 3959 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
3960 | && (*sec)->reloc_count != 0 |
3961 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
3962 | FALSE) != (bfd_vma) -1 | |
3963 | && discarded_section (code_sec)) | |
3964 | { | |
3965 | *sec = bfd_und_section_ptr; | |
3966 | isym->st_shndx = SHN_UNDEF; | |
3967 | } | |
3968 | } | |
dbd1e97e AM |
3969 | else if (*sec != NULL |
3970 | && strcmp ((*sec)->name, ".toc") == 0 | |
3971 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
3972 | { | |
3973 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
3974 | if (htab != NULL) | |
3975 | htab->params->object_in_toc = 1; | |
3976 | } | |
433817dd | 3977 | |
6911b7dc AM |
3978 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
3979 | { | |
3980 | if (abiversion (ibfd) == 0) | |
3981 | set_abiversion (ibfd, 2); | |
3982 | else if (abiversion (ibfd) == 1) | |
3983 | { | |
cf97bcb0 AM |
3984 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
3985 | " for ABI version 1"), *name); | |
6911b7dc AM |
3986 | bfd_set_error (bfd_error_bad_value); |
3987 | return FALSE; | |
3988 | } | |
3989 | } | |
3990 | ||
555cd476 AM |
3991 | return TRUE; |
3992 | } | |
3993 | ||
6911b7dc AM |
3994 | /* Merge non-visibility st_other attributes: local entry point. */ |
3995 | ||
3996 | static void | |
3997 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
3998 | const Elf_Internal_Sym *isym, | |
3999 | bfd_boolean definition, | |
4000 | bfd_boolean dynamic) | |
4001 | { | |
f378ab09 | 4002 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
4003 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
4004 | | ELF_ST_VISIBILITY (h->other)); | |
4005 | } | |
4006 | ||
8c5b4e52 AM |
4007 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4008 | we now have a real symbol. */ | |
4009 | ||
4010 | static bfd_boolean | |
4011 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 4012 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
4013 | asection **psec ATTRIBUTE_UNUSED, |
4014 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
4015 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
4016 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
4017 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4018 | { | |
4019 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
4020 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4021 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
4022 | return TRUE; |
4023 | } | |
4024 | ||
8387904d | 4025 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4026 | inclusion of a new ABI object archive that defines "bar". |
4027 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4028 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4029 | |
4030 | static struct elf_link_hash_entry * | |
4031 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4032 | struct bfd_link_info *info, | |
4033 | const char *name) | |
4034 | { | |
4035 | struct elf_link_hash_entry *h; | |
4036 | char *dot_name; | |
4037 | size_t len; | |
4038 | ||
4039 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4040 | if (h != NULL |
4041 | /* Don't return this sym if it is a fake function descriptor | |
4042 | created by add_symbol_adjust. */ | |
8c5b4e52 | 4043 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
4044 | return h; |
4045 | ||
4046 | if (name[0] == '.') | |
4047 | return h; | |
4048 | ||
4049 | len = strlen (name); | |
4050 | dot_name = bfd_alloc (abfd, len + 2); | |
4051 | if (dot_name == NULL) | |
e99955cd | 4052 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
4053 | dot_name[0] = '.'; |
4054 | memcpy (dot_name + 1, name, len + 1); | |
4055 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4056 | bfd_release (abfd, dot_name); | |
4057 | return h; | |
4058 | } | |
4059 | ||
4060 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4061 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4062 | are made weak. This stops later archive searches from including an | |
4063 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4064 | prevents the linker complaining about undefined symbols. |
4065 | We also check and correct mismatched symbol visibility here. The | |
4066 | most restrictive visibility of the function descriptor and the | |
4067 | function entry symbol is used. */ | |
8387904d AM |
4068 | |
4069 | static bfd_boolean | |
b3fac117 | 4070 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4071 | { |
8387904d AM |
4072 | struct ppc_link_hash_table *htab; |
4073 | struct ppc_link_hash_entry *fdh; | |
4074 | ||
b3fac117 AM |
4075 | if (eh->elf.root.type == bfd_link_hash_warning) |
4076 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4077 | |
8400d40d AM |
4078 | if (eh->elf.root.type == bfd_link_hash_indirect) |
4079 | return TRUE; | |
4080 | ||
b3fac117 AM |
4081 | if (eh->elf.root.root.string[0] != '.') |
4082 | abort (); | |
8387904d | 4083 | |
b3fac117 | 4084 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4085 | if (htab == NULL) |
4086 | return FALSE; | |
4087 | ||
b31867b6 | 4088 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4089 | if (fdh == NULL |
4090 | && !bfd_link_relocatable (info) | |
4091 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4092 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4093 | && eh->elf.ref_regular) | |
4094 | { | |
4095 | /* Make an undefined function descriptor sym, in order to | |
4096 | pull in an --as-needed shared lib. Archives are handled | |
4097 | elsewhere. */ | |
4098 | fdh = make_fdh (info, eh); | |
4099 | if (fdh == NULL) | |
4100 | return FALSE; | |
bb700d78 | 4101 | } |
8c5b4e52 AM |
4102 | |
4103 | if (fdh != NULL) | |
8387904d | 4104 | { |
35b0ce59 AM |
4105 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4106 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4107 | |
4108 | /* Make both descriptor and entry symbol have the most | |
4109 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4110 | if (entry_vis < descr_vis) |
4111 | fdh->elf.other += entry_vis - descr_vis; | |
4112 | else if (entry_vis > descr_vis) | |
4113 | eh->elf.other += descr_vis - entry_vis; | |
4114 | ||
8c5b4e52 AM |
4115 | /* Propagate reference flags from entry symbol to function |
4116 | descriptor symbol. */ | |
bc4e12de | 4117 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4118 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4119 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4120 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4121 | ||
4122 | if (!fdh->elf.forced_local | |
4123 | && fdh->elf.dynindx == -1 | |
4124 | && fdh->elf.versioned != versioned_hidden | |
4125 | && (bfd_link_dll (info) | |
4126 | || fdh->elf.def_dynamic | |
4127 | || fdh->elf.ref_dynamic) | |
4128 | && (eh->elf.ref_regular | |
4129 | || eh->elf.def_regular)) | |
4130 | { | |
2cdcc330 | 4131 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 4132 | return FALSE; |
35b0ce59 | 4133 | } |
8387904d | 4134 | } |
99877b66 | 4135 | |
8387904d AM |
4136 | return TRUE; |
4137 | } | |
4138 | ||
f6c7c3e8 AM |
4139 | /* Set up opd section info and abiversion for IBFD, and process list |
4140 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4141 | |
8387904d | 4142 | static bfd_boolean |
f6c7c3e8 | 4143 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4144 | { |
99877b66 | 4145 | struct ppc_link_hash_table *htab; |
b3fac117 | 4146 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4147 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4148 | |
459609d6 | 4149 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4150 | { |
b9399fcf AM |
4151 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4152 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4153 | ||
459609d6 AM |
4154 | if (abiversion (ibfd) == 0) |
4155 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4156 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4157 | { |
695344c0 | 4158 | /* xgettext:c-format */ |
cf97bcb0 AM |
4159 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4160 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4161 | bfd_set_error (bfd_error_bad_value); |
4162 | return FALSE; | |
f6c7c3e8 | 4163 | } |
b9399fcf | 4164 | } |
f6c7c3e8 | 4165 | |
b9399fcf AM |
4166 | if (is_ppc64_elf (info->output_bfd)) |
4167 | { | |
4168 | /* For input files without an explicit abiversion in e_flags | |
4169 | we should have flagged any with symbol st_other bits set | |
4170 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4171 | Set the output abiversion if not yet set, and for any input | |
4172 | still ambiguous, take its abiversion from the output. | |
4173 | Differences in ABI are reported later. */ | |
4174 | if (abiversion (info->output_bfd) == 0) | |
4175 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4176 | else if (abiversion (ibfd) == 0) | |
4177 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4178 | } |
4179 | ||
459609d6 AM |
4180 | htab = ppc_hash_table (info); |
4181 | if (htab == NULL) | |
b9399fcf | 4182 | return TRUE; |
459609d6 | 4183 | |
b9399fcf AM |
4184 | if (opd != NULL && opd->size != 0 |
4185 | && (ibfd->flags & DYNAMIC) == 0 | |
4186 | && (opd->flags & SEC_RELOC) != 0 | |
4187 | && opd->reloc_count != 0 | |
4188 | && !bfd_is_abs_section (opd->output_section) | |
4189 | && info->gc_sections) | |
4190 | { | |
4191 | /* Garbage collection needs some extra help with .opd sections. | |
4192 | We don't want to necessarily keep everything referenced by | |
4193 | relocs in .opd, as that would keep all functions. Instead, | |
4194 | if we reference an .opd symbol (a function descriptor), we | |
4195 | want to keep the function code symbol's section. This is | |
4196 | easy for global symbols, but for local syms we need to keep | |
4197 | information about the associated function section. */ | |
4198 | bfd_size_type amt; | |
4199 | asection **opd_sym_map; | |
4200 | Elf_Internal_Shdr *symtab_hdr; | |
4201 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4202 | ||
4203 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4204 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4205 | if (opd_sym_map == NULL) | |
4206 | return FALSE; | |
4207 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4208 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4209 | info->keep_memory); | |
4210 | if (relocs == NULL) | |
4211 | return FALSE; | |
4212 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4213 | rel_end = relocs + opd->reloc_count - 1; | |
4214 | for (rel = relocs; rel < rel_end; rel++) | |
4215 | { | |
4216 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4217 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4218 | ||
4219 | if (r_type == R_PPC64_ADDR64 | |
4220 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4221 | && r_symndx < symtab_hdr->sh_info) | |
4222 | { | |
4223 | Elf_Internal_Sym *isym; | |
4224 | asection *s; | |
4225 | ||
4226 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
4227 | if (isym == NULL) | |
4228 | { | |
4229 | if (elf_section_data (opd)->relocs != relocs) | |
4230 | free (relocs); | |
4231 | return FALSE; | |
4232 | } | |
4233 | ||
4234 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4235 | if (s != NULL && s != opd) | |
4236 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4237 | } | |
4238 | } | |
4239 | if (elf_section_data (opd)->relocs != relocs) | |
4240 | free (relocs); | |
4241 | } | |
459609d6 AM |
4242 | |
4243 | p = &htab->dot_syms; | |
4244 | while ((eh = *p) != NULL) | |
4245 | { | |
4246 | *p = NULL; | |
4247 | if (&eh->elf == htab->elf.hgot) | |
4248 | ; | |
4249 | else if (htab->elf.hgot == NULL | |
4250 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4251 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4252 | else if (abiversion (ibfd) <= 1) |
4253 | { | |
4254 | htab->need_func_desc_adj = 1; | |
4255 | if (!add_symbol_adjust (eh, info)) | |
4256 | return FALSE; | |
4257 | } | |
459609d6 AM |
4258 | p = &eh->u.next_dot_sym; |
4259 | } | |
b3fac117 | 4260 | return TRUE; |
8387904d AM |
4261 | } |
4262 | ||
97fed1c9 JJ |
4263 | /* Undo hash table changes when an --as-needed input file is determined |
4264 | not to be needed. */ | |
4265 | ||
4266 | static bfd_boolean | |
e5034e59 AM |
4267 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4268 | struct bfd_link_info *info, | |
4269 | enum notice_asneeded_action act) | |
97fed1c9 | 4270 | { |
e5034e59 AM |
4271 | if (act == notice_not_needed) |
4272 | { | |
4273 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4274 | |
e5034e59 AM |
4275 | if (htab == NULL) |
4276 | return FALSE; | |
4dfe6ac6 | 4277 | |
e5034e59 AM |
4278 | htab->dot_syms = NULL; |
4279 | } | |
4280 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4281 | } |
4282 | ||
aa374f67 AM |
4283 | /* If --just-symbols against a final linked binary, then assume we need |
4284 | toc adjusting stubs when calling functions defined there. */ | |
4285 | ||
4286 | static void | |
4287 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4288 | { | |
4289 | if ((sec->flags & SEC_CODE) != 0 | |
4290 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4291 | && is_ppc64_elf (sec->owner)) | |
4292 | { | |
2c3f079f AM |
4293 | if (abiversion (sec->owner) >= 2 |
4294 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4295 | sec->has_toc_reloc = 1; |
4296 | } | |
4297 | _bfd_elf_link_just_syms (sec, info); | |
4298 | } | |
4299 | ||
e054468f | 4300 | static struct plt_entry ** |
4ce794b7 AM |
4301 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4302 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4303 | { |
4304 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4305 | struct plt_entry **local_plt; |
f961d9dd | 4306 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4307 | |
4308 | if (local_got_ents == NULL) | |
4309 | { | |
4310 | bfd_size_type size = symtab_hdr->sh_info; | |
4311 | ||
e054468f AM |
4312 | size *= (sizeof (*local_got_ents) |
4313 | + sizeof (*local_plt) | |
4314 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4315 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4316 | if (local_got_ents == NULL) |
e054468f | 4317 | return NULL; |
411e1bfb AM |
4318 | elf_local_got_ents (abfd) = local_got_ents; |
4319 | } | |
4320 | ||
37da22e5 | 4321 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4322 | { |
4323 | struct got_entry *ent; | |
4324 | ||
4325 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4326 | if (ent->addend == r_addend |
4327 | && ent->owner == abfd | |
4328 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4329 | break; |
4330 | if (ent == NULL) | |
4331 | { | |
4332 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4333 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4334 | if (ent == NULL) |
4335 | return FALSE; | |
4336 | ent->next = local_got_ents[r_symndx]; | |
4337 | ent->addend = r_addend; | |
e717da7e | 4338 | ent->owner = abfd; |
411e1bfb | 4339 | ent->tls_type = tls_type; |
927be08e | 4340 | ent->is_indirect = FALSE; |
411e1bfb AM |
4341 | ent->got.refcount = 0; |
4342 | local_got_ents[r_symndx] = ent; | |
4343 | } | |
4344 | ent->got.refcount += 1; | |
4345 | } | |
4346 | ||
e054468f | 4347 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4348 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4349 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4350 | |
4351 | return local_plt + r_symndx; | |
65f38f15 AM |
4352 | } |
4353 | ||
411e1bfb | 4354 | static bfd_boolean |
e054468f | 4355 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4356 | { |
411e1bfb | 4357 | struct plt_entry *ent; |
1e2f5b6e | 4358 | |
e054468f | 4359 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4360 | if (ent->addend == addend) |
4361 | break; | |
4362 | if (ent == NULL) | |
1e2f5b6e | 4363 | { |
411e1bfb | 4364 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4365 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4366 | if (ent == NULL) |
4367 | return FALSE; | |
e054468f | 4368 | ent->next = *plist; |
411e1bfb AM |
4369 | ent->addend = addend; |
4370 | ent->plt.refcount = 0; | |
e054468f | 4371 | *plist = ent; |
1e2f5b6e | 4372 | } |
411e1bfb | 4373 | ent->plt.refcount += 1; |
b34976b6 | 4374 | return TRUE; |
1e2f5b6e AM |
4375 | } |
4376 | ||
e054468f AM |
4377 | static bfd_boolean |
4378 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4379 | { | |
4380 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4381 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4382 | || r_type == R_PPC64_REL14 |
4383 | || r_type == R_PPC64_REL14_BRTAKEN | |
4384 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4385 | || r_type == R_PPC64_ADDR24 | |
4386 | || r_type == R_PPC64_ADDR14 | |
4387 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4388 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4389 | || r_type == R_PPC64_PLTCALL |
4390 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4391 | } |
4392 | ||
4393 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4394 | ||
4395 | static bfd_boolean | |
4396 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4397 | { | |
4398 | return (r_type == R_PPC64_PLT16_HA | |
4399 | || r_type == R_PPC64_PLT16_HI | |
4400 | || r_type == R_PPC64_PLT16_LO | |
4401 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4402 | || r_type == R_PPC64_PLT_PCREL34 |
4403 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4404 | || r_type == R_PPC64_PLTSEQ | |
4405 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4406 | } |
4407 | ||
5bd4f169 | 4408 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4409 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4410 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4411 | |
b34976b6 | 4412 | static bfd_boolean |
4ce794b7 AM |
4413 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4414 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4415 | { |
65f38f15 | 4416 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4417 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4418 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4419 | const Elf_Internal_Rela *rel; |
4420 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4421 | asection *sreloc; |
3a71aa26 | 4422 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4423 | bfd_boolean is_opd; |
5bd4f169 | 4424 | |
0e1862bb | 4425 | if (bfd_link_relocatable (info)) |
b34976b6 | 4426 | return TRUE; |
5bd4f169 | 4427 | |
680a3378 AM |
4428 | /* Don't do anything special with non-loaded, non-alloced sections. |
4429 | In particular, any relocs in such sections should not affect GOT | |
4430 | and PLT reference counting (ie. we don't allow them to create GOT | |
4431 | or PLT entries), there's no possibility or desire to optimize TLS | |
4432 | relocs, and there's not much point in propagating relocs to shared | |
4433 | libs that the dynamic linker won't relocate. */ | |
4434 | if ((sec->flags & SEC_ALLOC) == 0) | |
4435 | return TRUE; | |
4436 | ||
0c8d6e5c | 4437 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4438 | |
65f38f15 | 4439 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4440 | if (htab == NULL) |
4441 | return FALSE; | |
4442 | ||
3a71aa26 AM |
4443 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4444 | FALSE, FALSE, TRUE); | |
4445 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4446 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4447 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4448 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4449 | sreloc = NULL; |
b9399fcf | 4450 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4451 | rel_end = relocs + sec->reloc_count; |
4452 | for (rel = relocs; rel < rel_end; rel++) | |
4453 | { | |
4454 | unsigned long r_symndx; | |
4455 | struct elf_link_hash_entry *h; | |
04c9666a | 4456 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4457 | int tls_type; |
7c8fe5c4 | 4458 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4459 | struct plt_entry **ifunc, **plt_list; |
5663e321 | 4460 | bfd_vma sym_addend; |
5bd4f169 AM |
4461 | |
4462 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4463 | if (r_symndx < symtab_hdr->sh_info) | |
4464 | h = NULL; | |
4465 | else | |
973a3492 L |
4466 | { |
4467 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4468 | h = elf_follow_link (h); |
1c865ab2 AM |
4469 | |
4470 | if (h == htab->elf.hgot) | |
4471 | sec->has_toc_reloc = 1; | |
973a3492 | 4472 | } |
5bd4f169 | 4473 | |
727fc41e | 4474 | tls_type = 0; |
e054468f | 4475 | ifunc = NULL; |
5663e321 AM |
4476 | r_type = ELF64_R_TYPE (rel->r_info); |
4477 | switch (r_type) | |
4478 | { | |
4479 | default: | |
4480 | /* Somewhat foolishly, because the ABIs don't specifically | |
4481 | allow it, ppc64 gas and ld support GOT and PLT relocs | |
4482 | with non-zero addends where the addend results in | |
4483 | sym+addend being stored in the GOT or PLT entry. This | |
4484 | can't be supported for pcrel relocs because the addend is | |
4485 | used to specify the pcrel offset. */ | |
4486 | sym_addend = rel->r_addend; | |
4487 | break; | |
4488 | case R_PPC64_GOT_PCREL34: | |
4489 | case R_PPC64_PLT_PCREL34: | |
4490 | case R_PPC64_PLT_PCREL34_NOTOC: | |
4491 | sym_addend = 0; | |
4492 | break; | |
4493 | } | |
25f23106 AM |
4494 | if (h != NULL) |
4495 | { | |
4496 | if (h->type == STT_GNU_IFUNC) | |
4497 | { | |
4498 | h->needs_plt = 1; | |
4499 | ifunc = &h->plt.plist; | |
4500 | } | |
4501 | } | |
4502 | else | |
4503 | { | |
4504 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4505 | abfd, r_symndx); | |
4506 | if (isym == NULL) | |
4507 | return FALSE; | |
4508 | ||
4509 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4510 | { | |
4511 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5663e321 | 4512 | sym_addend, |
37da22e5 | 4513 | NON_GOT | PLT_IFUNC); |
25f23106 AM |
4514 | if (ifunc == NULL) |
4515 | return FALSE; | |
4516 | } | |
4517 | } | |
727fc41e | 4518 | |
a33d1f77 | 4519 | switch (r_type) |
5bd4f169 | 4520 | { |
727fc41e AM |
4521 | case R_PPC64_TLSGD: |
4522 | case R_PPC64_TLSLD: | |
4523 | /* These special tls relocs tie a call to __tls_get_addr with | |
4524 | its parameter symbol. */ | |
37da22e5 AM |
4525 | if (h != NULL) |
4526 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
4527 | else | |
4528 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5663e321 | 4529 | sym_addend, |
37da22e5 AM |
4530 | NON_GOT | TLS_TLS | TLS_MARK)) |
4531 | return FALSE; | |
4532 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4533 | break; |
4534 | ||
411e1bfb AM |
4535 | case R_PPC64_GOT_TLSLD16: |
4536 | case R_PPC64_GOT_TLSLD16_LO: | |
4537 | case R_PPC64_GOT_TLSLD16_HI: | |
4538 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4539 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4540 | goto dogottls; |
4541 | ||
4542 | case R_PPC64_GOT_TLSGD16: | |
4543 | case R_PPC64_GOT_TLSGD16_LO: | |
4544 | case R_PPC64_GOT_TLSGD16_HI: | |
4545 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4546 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4547 | goto dogottls; |
4548 | ||
4549 | case R_PPC64_GOT_TPREL16_DS: | |
4550 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4551 | case R_PPC64_GOT_TPREL16_HI: | |
4552 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 4553 | if (bfd_link_dll (info)) |
411e1bfb AM |
4554 | info->flags |= DF_STATIC_TLS; |
4555 | tls_type = TLS_TLS | TLS_TPREL; | |
4556 | goto dogottls; | |
4557 | ||
4558 | case R_PPC64_GOT_DTPREL16_DS: | |
4559 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4560 | case R_PPC64_GOT_DTPREL16_HI: | |
4561 | case R_PPC64_GOT_DTPREL16_HA: | |
4562 | tls_type = TLS_TLS | TLS_DTPREL; | |
4563 | dogottls: | |
4564 | sec->has_tls_reloc = 1; | |
066f4018 | 4565 | goto dogot; |
411e1bfb | 4566 | |
5bd4f169 | 4567 | case R_PPC64_GOT16_DS: |
65f38f15 | 4568 | case R_PPC64_GOT16_HA: |
066f4018 | 4569 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4570 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
4571 | ppc64_elf_tdata (abfd)->has_gotrel = 1; |
4572 | ppc64_elf_section_data (sec)->has_gotrel = 1; | |
4573 | /* Fall through. */ | |
4574 | ||
4575 | case R_PPC64_GOT16: | |
65f38f15 AM |
4576 | case R_PPC64_GOT16_HI: |
4577 | case R_PPC64_GOT16_LO: | |
066f4018 | 4578 | dogot: |
65f38f15 | 4579 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4580 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4581 | if (r_type == R_PPC64_GOT_TLSLD16 |
4582 | || r_type == R_PPC64_GOT_TLSGD16 | |
4583 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4584 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4585 | || r_type == R_PPC64_GOT16 | |
4586 | || r_type == R_PPC64_GOT16_DS) | |
4587 | { | |
4588 | htab->do_multi_toc = 1; | |
d77c8a4b | 4589 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4590 | } |
4591 | ||
e717da7e AM |
4592 | if (ppc64_elf_tdata (abfd)->got == NULL |
4593 | && !create_got_section (abfd, info)) | |
b34976b6 | 4594 | return FALSE; |
5bd4f169 AM |
4595 | |
4596 | if (h != NULL) | |
4597 | { | |
411e1bfb AM |
4598 | struct ppc_link_hash_entry *eh; |
4599 | struct got_entry *ent; | |
65f38f15 | 4600 | |
411e1bfb AM |
4601 | eh = (struct ppc_link_hash_entry *) h; |
4602 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5663e321 | 4603 | if (ent->addend == sym_addend |
e717da7e | 4604 | && ent->owner == abfd |
411e1bfb AM |
4605 | && ent->tls_type == tls_type) |
4606 | break; | |
4607 | if (ent == NULL) | |
5bd4f169 | 4608 | { |
411e1bfb | 4609 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4610 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4611 | if (ent == NULL) |
b34976b6 | 4612 | return FALSE; |
411e1bfb | 4613 | ent->next = eh->elf.got.glist; |
5663e321 | 4614 | ent->addend = sym_addend; |
e717da7e | 4615 | ent->owner = abfd; |
411e1bfb | 4616 | ent->tls_type = tls_type; |
927be08e | 4617 | ent->is_indirect = FALSE; |
411e1bfb AM |
4618 | ent->got.refcount = 0; |
4619 | eh->elf.got.glist = ent; | |
5bd4f169 | 4620 | } |
411e1bfb | 4621 | ent->got.refcount += 1; |
e7b938ca | 4622 | eh->tls_mask |= tls_type; |
5bd4f169 | 4623 | } |
411e1bfb AM |
4624 | else |
4625 | /* This is a global offset table entry for a local symbol. */ | |
4626 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5663e321 | 4627 | sym_addend, tls_type)) |
411e1bfb | 4628 | return FALSE; |
a345bc8d AM |
4629 | |
4630 | /* We may also need a plt entry if the symbol turns out to be | |
4631 | an ifunc. */ | |
0e1862bb | 4632 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d | 4633 | { |
5663e321 | 4634 | if (!update_plt_info (abfd, &h->plt.plist, sym_addend)) |
a345bc8d AM |
4635 | return FALSE; |
4636 | } | |
5bd4f169 AM |
4637 | break; |
4638 | ||
5bd4f169 | 4639 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4640 | case R_PPC64_PLT16_HI: |
4641 | case R_PPC64_PLT16_LO: | |
08be3224 | 4642 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4643 | case R_PPC64_PLT_PCREL34: |
4644 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4645 | case R_PPC64_PLT32: |
4646 | case R_PPC64_PLT64: | |
cbf95972 AM |
4647 | /* This symbol requires a procedure linkage table entry. */ |
4648 | plt_list = ifunc; | |
4649 | if (h != NULL) | |
e054468f | 4650 | { |
e054468f AM |
4651 | h->needs_plt = 1; |
4652 | if (h->root.root.string[0] == '.' | |
4653 | && h->root.root.string[1] != '\0') | |
4654 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 4655 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
4656 | plt_list = &h->plt.plist; |
4657 | } | |
4658 | if (plt_list == NULL) | |
2d7ad24e | 4659 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
5663e321 | 4660 | sym_addend, |
2d7ad24e | 4661 | NON_GOT | PLT_KEEP); |
5663e321 | 4662 | if (!update_plt_info (abfd, plt_list, sym_addend)) |
cbf95972 | 4663 | return FALSE; |
5bd4f169 AM |
4664 | break; |
4665 | ||
4666 | /* The following relocations don't need to propagate the | |
4667 | relocation if linking a shared object since they are | |
4668 | section relative. */ | |
4669 | case R_PPC64_SECTOFF: | |
4670 | case R_PPC64_SECTOFF_LO: | |
4671 | case R_PPC64_SECTOFF_HI: | |
4672 | case R_PPC64_SECTOFF_HA: | |
4673 | case R_PPC64_SECTOFF_DS: | |
4674 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4675 | case R_PPC64_DTPREL16: |
4676 | case R_PPC64_DTPREL16_LO: | |
4677 | case R_PPC64_DTPREL16_HI: | |
4678 | case R_PPC64_DTPREL16_HA: | |
4679 | case R_PPC64_DTPREL16_DS: | |
4680 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4681 | case R_PPC64_DTPREL16_HIGH: |
4682 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4683 | case R_PPC64_DTPREL16_HIGHER: |
4684 | case R_PPC64_DTPREL16_HIGHERA: | |
4685 | case R_PPC64_DTPREL16_HIGHEST: | |
4686 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4687 | break; |
4688 | ||
ad8e1ba5 | 4689 | /* Nor do these. */ |
25f23106 AM |
4690 | case R_PPC64_REL16: |
4691 | case R_PPC64_REL16_LO: | |
4692 | case R_PPC64_REL16_HI: | |
4693 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4694 | case R_PPC64_REL16_HIGH: |
4695 | case R_PPC64_REL16_HIGHA: | |
4696 | case R_PPC64_REL16_HIGHER: | |
4697 | case R_PPC64_REL16_HIGHERA: | |
4698 | case R_PPC64_REL16_HIGHEST: | |
4699 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4700 | case R_PPC64_REL16_HIGHER34: |
4701 | case R_PPC64_REL16_HIGHERA34: | |
4702 | case R_PPC64_REL16_HIGHEST34: | |
4703 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4704 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4705 | break; |
4706 | ||
45965137 AM |
4707 | /* Not supported as a dynamic relocation. */ |
4708 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4709 | if (bfd_link_pic (info)) |
45965137 AM |
4710 | { |
4711 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4712 | ppc_howto_init (); | |
695344c0 | 4713 | /* xgettext:c-format */ |
174d0a74 | 4714 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4715 | "in shared libraries and PIEs\n"), |
45965137 AM |
4716 | abfd, sec, rel->r_offset, |
4717 | ppc64_elf_howto_table[r_type]->name); | |
4718 | bfd_set_error (bfd_error_bad_value); | |
4719 | return FALSE; | |
4720 | } | |
4721 | break; | |
4722 | ||
ad8e1ba5 | 4723 | case R_PPC64_TOC16: |
33c0ec9d AM |
4724 | case R_PPC64_TOC16_DS: |
4725 | htab->do_multi_toc = 1; | |
d77c8a4b | 4726 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4727 | /* Fall through. */ |
ad8e1ba5 AM |
4728 | case R_PPC64_TOC16_LO: |
4729 | case R_PPC64_TOC16_HI: | |
4730 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4731 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4732 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4733 | break; |
4734 | ||
006589cf AM |
4735 | /* Marker reloc. */ |
4736 | case R_PPC64_ENTRY: | |
4737 | break; | |
4738 | ||
5bd4f169 AM |
4739 | /* This relocation describes the C++ object vtable hierarchy. |
4740 | Reconstruct it for later use during GC. */ | |
4741 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4742 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4743 | return FALSE; |
5bd4f169 AM |
4744 | break; |
4745 | ||
4746 | /* This relocation describes which C++ vtable entries are actually | |
4747 | used. Record for later use during GC. */ | |
4748 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4749 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4750 | return FALSE; |
5bd4f169 AM |
4751 | break; |
4752 | ||
721956f4 AM |
4753 | case R_PPC64_REL14: |
4754 | case R_PPC64_REL14_BRTAKEN: | |
4755 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4756 | { |
4757 | asection *dest = NULL; | |
4758 | ||
4759 | /* Heuristic: If jumping outside our section, chances are | |
4760 | we are going to need a stub. */ | |
4761 | if (h != NULL) | |
4762 | { | |
4763 | /* If the sym is weak it may be overridden later, so | |
4764 | don't assume we know where a weak sym lives. */ | |
4765 | if (h->root.type == bfd_link_hash_defined) | |
4766 | dest = h->root.u.def.section; | |
4767 | } | |
4768 | else | |
87d72d41 AM |
4769 | { |
4770 | Elf_Internal_Sym *isym; | |
4771 | ||
4772 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4773 | abfd, r_symndx); | |
4774 | if (isym == NULL) | |
4775 | return FALSE; | |
4776 | ||
4777 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4778 | } | |
4779 | ||
220c76dd | 4780 | if (dest != sec) |
7c8fe5c4 | 4781 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4782 | } |
3e04d765 AM |
4783 | goto rel24; |
4784 | ||
4785 | case R_PPC64_PLTCALL: | |
5663e321 | 4786 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4787 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4788 | /* Fall through. */ |
4789 | ||
5d1634d7 | 4790 | case R_PPC64_REL24: |
05d0e962 | 4791 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4792 | rel24: |
cbf95972 AM |
4793 | plt_list = ifunc; |
4794 | if (h != NULL) | |
5d1634d7 | 4795 | { |
e054468f AM |
4796 | h->needs_plt = 1; |
4797 | if (h->root.root.string[0] == '.' | |
4798 | && h->root.root.string[1] != '\0') | |
4799 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 4800 | |
3a71aa26 | 4801 | if (h == tga || h == dottga) |
cbf95972 AM |
4802 | { |
4803 | sec->has_tls_reloc = 1; | |
4804 | if (rel != relocs | |
4805 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4806 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4807 | /* We have a new-style __tls_get_addr call with | |
4808 | a marker reloc. */ | |
4809 | ; | |
4810 | else | |
4811 | /* Mark this section as having an old-style call. */ | |
4812 | sec->has_tls_get_addr_call = 1; | |
4813 | } | |
4814 | plt_list = &h->plt.plist; | |
411e1bfb | 4815 | } |
cbf95972 AM |
4816 | |
4817 | /* We may need a .plt entry if the function this reloc | |
4818 | refers to is in a shared lib. */ | |
4819 | if (plt_list | |
5663e321 | 4820 | && !update_plt_info (abfd, plt_list, sym_addend)) |
cbf95972 | 4821 | return FALSE; |
411e1bfb AM |
4822 | break; |
4823 | ||
cbf95972 AM |
4824 | case R_PPC64_ADDR14: |
4825 | case R_PPC64_ADDR14_BRNTAKEN: | |
4826 | case R_PPC64_ADDR14_BRTAKEN: | |
4827 | case R_PPC64_ADDR24: | |
4828 | goto dodyn; | |
4829 | ||
411e1bfb AM |
4830 | case R_PPC64_TPREL64: |
4831 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 4832 | if (bfd_link_dll (info)) |
411e1bfb AM |
4833 | info->flags |= DF_STATIC_TLS; |
4834 | goto dotlstoc; | |
4835 | ||
4836 | case R_PPC64_DTPMOD64: | |
4837 | if (rel + 1 < rel_end | |
4838 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4839 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4840 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4841 | else |
951fd09b | 4842 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4843 | goto dotlstoc; |
4844 | ||
4845 | case R_PPC64_DTPREL64: | |
4846 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4847 | if (rel != relocs | |
4848 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4849 | && rel[-1].r_offset == rel->r_offset - 8) | |
4850 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4851 | Don't mark with TLS_DTPREL. */ | |
4852 | goto dodyn; | |
4853 | ||
4854 | dotlstoc: | |
4855 | sec->has_tls_reloc = 1; | |
4856 | if (h != NULL) | |
4857 | { | |
4858 | struct ppc_link_hash_entry *eh; | |
4859 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4860 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4861 | } |
4862 | else | |
4863 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5663e321 | 4864 | sym_addend, tls_type)) |
411e1bfb AM |
4865 | return FALSE; |
4866 | ||
7c8fe5c4 AM |
4867 | ppc64_sec = ppc64_elf_section_data (sec); |
4868 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4869 | { |
3a71aa26 AM |
4870 | bfd_size_type amt; |
4871 | ||
e7b938ca | 4872 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
4873 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
4874 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
4875 | if (ppc64_sec->u.toc.symndx == NULL) | |
4876 | return FALSE; | |
4877 | amt = sec->size * sizeof (bfd_vma) / 8; | |
4878 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
4879 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 4880 | return FALSE; |
7c8fe5c4 AM |
4881 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4882 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4883 | } |
4884 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 4885 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5663e321 | 4886 | ppc64_sec->u.toc.add[rel->r_offset / 8] = sym_addend; |
951fd09b AM |
4887 | |
4888 | /* Mark the second slot of a GD or LD entry. | |
4889 | -1 to indicate GD and -2 to indicate LD. */ | |
4890 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 4891 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4892 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 4893 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4894 | goto dodyn; |
4895 | ||
4896 | case R_PPC64_TPREL16: | |
4897 | case R_PPC64_TPREL16_LO: | |
4898 | case R_PPC64_TPREL16_HI: | |
4899 | case R_PPC64_TPREL16_HA: | |
4900 | case R_PPC64_TPREL16_DS: | |
4901 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
4902 | case R_PPC64_TPREL16_HIGH: |
4903 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
4904 | case R_PPC64_TPREL16_HIGHER: |
4905 | case R_PPC64_TPREL16_HIGHERA: | |
4906 | case R_PPC64_TPREL16_HIGHEST: | |
4907 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
4908 | if (bfd_link_dll (info)) |
4909 | info->flags |= DF_STATIC_TLS; | |
4910 | goto dodyn; | |
5d1634d7 | 4911 | |
e86ce104 | 4912 | case R_PPC64_ADDR64: |
b9399fcf | 4913 | if (is_opd |
1e2f5b6e | 4914 | && rel + 1 < rel_end |
4ce794b7 | 4915 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4916 | { |
8387904d | 4917 | if (h != NULL) |
8c5b4e52 | 4918 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 4919 | } |
e86ce104 AM |
4920 | /* Fall through. */ |
4921 | ||
65f38f15 AM |
4922 | case R_PPC64_ADDR16: |
4923 | case R_PPC64_ADDR16_DS: | |
4924 | case R_PPC64_ADDR16_HA: | |
4925 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
4926 | case R_PPC64_ADDR16_HIGH: |
4927 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
4928 | case R_PPC64_ADDR16_HIGHER: |
4929 | case R_PPC64_ADDR16_HIGHERA: | |
4930 | case R_PPC64_ADDR16_HIGHEST: | |
4931 | case R_PPC64_ADDR16_HIGHESTA: | |
4932 | case R_PPC64_ADDR16_LO: | |
4933 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
4934 | case R_PPC64_D34: |
4935 | case R_PPC64_D34_LO: | |
4936 | case R_PPC64_D34_HI30: | |
4937 | case R_PPC64_D34_HA30: | |
4938 | case R_PPC64_ADDR16_HIGHER34: | |
4939 | case R_PPC64_ADDR16_HIGHERA34: | |
4940 | case R_PPC64_ADDR16_HIGHEST34: | |
4941 | case R_PPC64_ADDR16_HIGHESTA34: | |
4942 | case R_PPC64_D28: | |
0e1862bb | 4943 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
4944 | && rel->r_addend == 0) |
4945 | { | |
4946 | /* We may need a .plt entry if this reloc refers to a | |
4947 | function in a shared lib. */ | |
5663e321 | 4948 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
a345bc8d AM |
4949 | return FALSE; |
4950 | h->pointer_equality_needed = 1; | |
4951 | } | |
4952 | /* Fall through. */ | |
4953 | ||
4954 | case R_PPC64_REL30: | |
4955 | case R_PPC64_REL32: | |
4956 | case R_PPC64_REL64: | |
65f38f15 | 4957 | case R_PPC64_ADDR32: |
65f38f15 AM |
4958 | case R_PPC64_UADDR16: |
4959 | case R_PPC64_UADDR32: | |
4960 | case R_PPC64_UADDR64: | |
5bd4f169 | 4961 | case R_PPC64_TOC: |
0e1862bb | 4962 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 4963 | /* We may need a copy reloc. */ |
f5385ebf | 4964 | h->non_got_ref = 1; |
81848ca0 | 4965 | |
41bd81ab | 4966 | /* Don't propagate .opd relocs. */ |
b9399fcf | 4967 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 4968 | break; |
e86ce104 | 4969 | |
65f38f15 AM |
4970 | /* If we are creating a shared library, and this is a reloc |
4971 | against a global symbol, or a non PC relative reloc | |
4972 | against a local symbol, then we need to copy the reloc | |
4973 | into the shared library. However, if we are linking with | |
4974 | -Bsymbolic, we do not need to copy a reloc against a | |
4975 | global symbol which is defined in an object we are | |
4976 | including in the link (i.e., DEF_REGULAR is set). At | |
4977 | this point we have not seen all the input files, so it is | |
4978 | possible that DEF_REGULAR is not set now but will be set | |
4979 | later (it is never cleared). In case of a weak definition, | |
4980 | DEF_REGULAR may be cleared later by a strong definition in | |
4981 | a shared library. We account for that possibility below by | |
f4656909 | 4982 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4983 | table entry. A similar situation occurs when creating |
4984 | shared libraries and symbol visibility changes render the | |
4985 | symbol local. | |
4986 | ||
4987 | If on the other hand, we are creating an executable, we | |
4988 | may need to keep relocations for symbols satisfied by a | |
4989 | dynamic library if we manage to avoid copy relocs for the | |
4990 | symbol. */ | |
411e1bfb | 4991 | dodyn: |
0e1862bb | 4992 | if ((bfd_link_pic (info) |
1d483afe | 4993 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 4994 | || (h != NULL |
198f1157 | 4995 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 4996 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 4997 | || !h->def_regular)))) |
f4656909 | 4998 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 4999 | && !bfd_link_pic (info) |
65f38f15 AM |
5000 | && h != NULL |
5001 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 5002 | || !h->def_regular)) |
0e1862bb | 5003 | || (!bfd_link_pic (info) |
25f23106 | 5004 | && ifunc != NULL)) |
5bd4f169 | 5005 | { |
65f38f15 AM |
5006 | /* We must copy these reloc types into the output file. |
5007 | Create a reloc section in dynobj and make room for | |
5008 | this reloc. */ | |
5bd4f169 AM |
5009 | if (sreloc == NULL) |
5010 | { | |
83bac4b0 NC |
5011 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5012 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5013 | |
5bd4f169 | 5014 | if (sreloc == NULL) |
83bac4b0 | 5015 | return FALSE; |
5bd4f169 AM |
5016 | } |
5017 | ||
65f38f15 AM |
5018 | /* If this is a global symbol, we count the number of |
5019 | relocations we need for this symbol. */ | |
5020 | if (h != NULL) | |
5021 | { | |
19e08130 AM |
5022 | struct elf_dyn_relocs *p; |
5023 | struct elf_dyn_relocs **head; | |
5024 | ||
ec338859 | 5025 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5026 | p = *head; |
5027 | if (p == NULL || p->sec != sec) | |
5028 | { | |
5029 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5030 | if (p == NULL) | |
5031 | return FALSE; | |
5032 | p->next = *head; | |
5033 | *head = p; | |
5034 | p->sec = sec; | |
5035 | p->count = 0; | |
5036 | p->pc_count = 0; | |
5037 | } | |
5038 | p->count += 1; | |
5039 | if (!must_be_dyn_reloc (info, r_type)) | |
5040 | p->pc_count += 1; | |
65f38f15 AM |
5041 | } |
5042 | else | |
5043 | { | |
ec338859 AM |
5044 | /* Track dynamic relocs needed for local syms too. |
5045 | We really need local syms available to do this | |
5046 | easily. Oh well. */ | |
19e08130 AM |
5047 | struct ppc_dyn_relocs *p; |
5048 | struct ppc_dyn_relocs **head; | |
5049 | bfd_boolean is_ifunc; | |
ec338859 | 5050 | asection *s; |
6edfbbad | 5051 | void *vpp; |
87d72d41 | 5052 | Elf_Internal_Sym *isym; |
6edfbbad | 5053 | |
87d72d41 AM |
5054 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5055 | abfd, r_symndx); | |
5056 | if (isym == NULL) | |
b34976b6 | 5057 | return FALSE; |
ec338859 | 5058 | |
87d72d41 AM |
5059 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5060 | if (s == NULL) | |
5061 | s = sec; | |
5062 | ||
6edfbbad | 5063 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5064 | head = (struct ppc_dyn_relocs **) vpp; |
5065 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5066 | p = *head; | |
5067 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5068 | p = p->next; | |
5069 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5070 | { | |
5071 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5072 | if (p == NULL) | |
5073 | return FALSE; | |
5074 | p->next = *head; | |
5075 | *head = p; | |
5076 | p->sec = sec; | |
5077 | p->ifunc = is_ifunc; | |
5078 | p->count = 0; | |
5079 | } | |
5080 | p->count += 1; | |
ec338859 | 5081 | } |
65f38f15 | 5082 | } |
5bd4f169 | 5083 | break; |
65f38f15 AM |
5084 | |
5085 | default: | |
96e0dda4 | 5086 | break; |
5bd4f169 AM |
5087 | } |
5088 | } | |
5089 | ||
b34976b6 | 5090 | return TRUE; |
5bd4f169 AM |
5091 | } |
5092 | ||
ee67d69a AM |
5093 | /* Merge backend specific data from an object file to the output |
5094 | object file when linking. */ | |
5095 | ||
5096 | static bfd_boolean | |
50e03d47 | 5097 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5098 | { |
50e03d47 | 5099 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5100 | unsigned long iflags, oflags; |
5101 | ||
5102 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5103 | return TRUE; | |
5104 | ||
5105 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5106 | return TRUE; | |
5107 | ||
50e03d47 | 5108 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
5109 | return FALSE; |
5110 | ||
5111 | iflags = elf_elfheader (ibfd)->e_flags; | |
5112 | oflags = elf_elfheader (obfd)->e_flags; | |
5113 | ||
f6c7c3e8 | 5114 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5115 | { |
4eca0228 | 5116 | _bfd_error_handler |
695344c0 | 5117 | /* xgettext:c-format */ |
871b3ab2 | 5118 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
5119 | bfd_set_error (bfd_error_bad_value); |
5120 | return FALSE; | |
5121 | } | |
f6c7c3e8 | 5122 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5123 | { |
4eca0228 | 5124 | _bfd_error_handler |
695344c0 | 5125 | /* xgettext:c-format */ |
871b3ab2 | 5126 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5127 | ibfd, iflags, oflags); |
5128 | bfd_set_error (bfd_error_bad_value); | |
5129 | return FALSE; | |
5130 | } | |
5131 | ||
4a91d0ba AM |
5132 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
5133 | return FALSE; | |
005d79fd | 5134 | |
ee67d69a | 5135 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5136 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5137 | } |
5138 | ||
5139 | static bfd_boolean | |
5140 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5141 | { | |
5142 | /* Print normal ELF private data. */ | |
5143 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5144 | ||
5145 | if (elf_elfheader (abfd)->e_flags != 0) | |
5146 | { | |
5147 | FILE *file = ptr; | |
5148 | ||
ee67d69a AM |
5149 | fprintf (file, _("private flags = 0x%lx:"), |
5150 | elf_elfheader (abfd)->e_flags); | |
5151 | ||
5152 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5153 | fprintf (file, _(" [abiv%ld]"), | |
5154 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5155 | fputc ('\n', file); | |
5156 | } | |
5157 | ||
5158 | return TRUE; | |
5159 | } | |
5160 | ||
8387904d | 5161 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5162 | of the code entry point, and its section, which must be in the same |
5163 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5164 | |
5165 | static bfd_vma | |
5166 | opd_entry_value (asection *opd_sec, | |
5167 | bfd_vma offset, | |
5168 | asection **code_sec, | |
aef36ac1 AM |
5169 | bfd_vma *code_off, |
5170 | bfd_boolean in_code_sec) | |
8387904d AM |
5171 | { |
5172 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5173 | Elf_Internal_Rela *relocs; |
8387904d | 5174 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5175 | bfd_vma val; |
8387904d | 5176 | |
9f296da3 AM |
5177 | /* No relocs implies we are linking a --just-symbols object, or looking |
5178 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5179 | if (opd_sec->reloc_count == 0) |
5180 | { | |
729eabd5 | 5181 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5182 | |
729eabd5 AM |
5183 | if (contents == NULL) |
5184 | { | |
5185 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5186 | return (bfd_vma) -1; | |
5187 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5188 | } | |
ee1e4ede | 5189 | |
dbb3fbbb | 5190 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5191 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5192 | return (bfd_vma) -1; |
5193 | ||
729eabd5 | 5194 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5195 | if (code_sec != NULL) |
5196 | { | |
5197 | asection *sec, *likely = NULL; | |
ee1e4ede | 5198 | |
aef36ac1 | 5199 | if (in_code_sec) |
4b85d634 | 5200 | { |
aef36ac1 AM |
5201 | sec = *code_sec; |
5202 | if (sec->vma <= val | |
5203 | && val < sec->vma + sec->size) | |
5204 | likely = sec; | |
5205 | else | |
5206 | val = -1; | |
5207 | } | |
5208 | else | |
5209 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5210 | if (sec->vma <= val | |
5211 | && (sec->flags & SEC_LOAD) != 0 | |
5212 | && (sec->flags & SEC_ALLOC) != 0) | |
5213 | likely = sec; | |
5214 | if (likely != NULL) | |
5215 | { | |
5216 | *code_sec = likely; | |
5217 | if (code_off != NULL) | |
5218 | *code_off = val - likely->vma; | |
4b85d634 AM |
5219 | } |
5220 | } | |
aef36ac1 | 5221 | return val; |
4b85d634 AM |
5222 | } |
5223 | ||
0c8d6e5c | 5224 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5225 | |
729eabd5 | 5226 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5227 | if (relocs == NULL) |
5228 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5229 | /* PR 17512: file: df8e1fd6. */ |
5230 | if (relocs == NULL) | |
5231 | return (bfd_vma) -1; | |
645ea6a9 | 5232 | |
8387904d | 5233 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5234 | lo = relocs; |
8387904d | 5235 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5236 | val = (bfd_vma) -1; |
8387904d AM |
5237 | while (lo < hi) |
5238 | { | |
5239 | look = lo + (hi - lo) / 2; | |
5240 | if (look->r_offset < offset) | |
5241 | lo = look + 1; | |
5242 | else if (look->r_offset > offset) | |
5243 | hi = look; | |
5244 | else | |
5245 | { | |
0ffa91dd NC |
5246 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5247 | ||
8387904d AM |
5248 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5249 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5250 | { | |
5251 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5252 | asection *sec = NULL; |
8387904d | 5253 | |
b53dfeb2 AM |
5254 | if (symndx >= symtab_hdr->sh_info |
5255 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5256 | { |
5257 | struct elf_link_hash_entry **sym_hashes; | |
5258 | struct elf_link_hash_entry *rh; | |
5259 | ||
5260 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5261 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5262 | if (rh != NULL) |
5263 | { | |
5264 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5265 | if (rh->root.type != bfd_link_hash_defined |
5266 | && rh->root.type != bfd_link_hash_defweak) | |
5267 | break; | |
5268 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5269 | { |
bb854a36 AM |
5270 | val = rh->root.u.def.value; |
5271 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5272 | } |
5273 | } | |
5274 | } | |
5275 | ||
5276 | if (sec == NULL) | |
5277 | { | |
5278 | Elf_Internal_Sym *sym; | |
5279 | ||
5280 | if (symndx < symtab_hdr->sh_info) | |
5281 | { | |
5282 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5283 | if (sym == NULL) | |
5284 | { | |
5285 | size_t symcnt = symtab_hdr->sh_info; | |
5286 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5287 | symcnt, 0, | |
5288 | NULL, NULL, NULL); | |
5289 | if (sym == NULL) | |
5290 | break; | |
5291 | symtab_hdr->contents = (bfd_byte *) sym; | |
5292 | } | |
5293 | sym += symndx; | |
128205bb AM |
5294 | } |
5295 | else | |
5296 | { | |
b53dfeb2 AM |
5297 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5298 | 1, symndx, | |
5299 | NULL, NULL, NULL); | |
128205bb AM |
5300 | if (sym == NULL) |
5301 | break; | |
128205bb | 5302 | } |
b53dfeb2 AM |
5303 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5304 | if (sec == NULL) | |
5305 | break; | |
5306 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5307 | val = sym->st_value; | |
8387904d | 5308 | } |
b53dfeb2 | 5309 | |
8387904d AM |
5310 | val += look->r_addend; |
5311 | if (code_off != NULL) | |
5312 | *code_off = val; | |
5313 | if (code_sec != NULL) | |
aef36ac1 AM |
5314 | { |
5315 | if (in_code_sec && *code_sec != sec) | |
5316 | return -1; | |
5317 | else | |
5318 | *code_sec = sec; | |
5319 | } | |
b53dfeb2 | 5320 | if (sec->output_section != NULL) |
8387904d | 5321 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5322 | } |
5323 | break; | |
5324 | } | |
5325 | } | |
645ea6a9 | 5326 | |
645ea6a9 | 5327 | return val; |
8387904d AM |
5328 | } |
5329 | ||
aef36ac1 AM |
5330 | /* If the ELF symbol SYM might be a function in SEC, return the |
5331 | function size and set *CODE_OFF to the function's entry point, | |
5332 | otherwise return zero. */ | |
9f296da3 | 5333 | |
aef36ac1 AM |
5334 | static bfd_size_type |
5335 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5336 | bfd_vma *code_off) | |
9f296da3 | 5337 | { |
aef36ac1 AM |
5338 | bfd_size_type size; |
5339 | ||
5340 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5341 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5342 | return 0; | |
5343 | ||
5344 | size = 0; | |
5345 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5346 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5347 | ||
5348 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5349 | { |
b07bca4e AM |
5350 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5351 | bfd_vma symval = sym->value; | |
5352 | ||
5353 | if (opd != NULL | |
5354 | && opd->adjust != NULL | |
5355 | && elf_section_data (sym->section)->relocs != NULL) | |
5356 | { | |
5357 | /* opd_entry_value will use cached relocs that have been | |
5358 | adjusted, but with raw symbols. That means both local | |
5359 | and global symbols need adjusting. */ | |
5360 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5361 | if (adjust == -1) | |
5362 | return 0; | |
5363 | symval += adjust; | |
5364 | } | |
5365 | ||
5366 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5367 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5368 | return 0; | |
5369 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5370 | symbol. This size has nothing to do with the code size of the | |
5371 | function, which is what we're supposed to return, but the | |
5372 | code size isn't available without looking up the dot-sym. | |
5373 | However, doing that would be a waste of time particularly | |
5374 | since elf_find_function will look at the dot-sym anyway. | |
5375 | Now, elf_find_function will keep the largest size of any | |
5376 | function sym found at the code address of interest, so return | |
5377 | 1 here to avoid it incorrectly caching a larger function size | |
5378 | for a small function. This does mean we return the wrong | |
5379 | size for a new-ABI function of size 24, but all that does is | |
5380 | disable caching for such functions. */ | |
5381 | if (size == 24) | |
5382 | size = 1; | |
9f296da3 | 5383 | } |
aef36ac1 AM |
5384 | else |
5385 | { | |
5386 | if (sym->section != sec) | |
5387 | return 0; | |
5388 | *code_off = sym->value; | |
5389 | } | |
5390 | if (size == 0) | |
5391 | size = 1; | |
5392 | return size; | |
9f296da3 AM |
5393 | } |
5394 | ||
f378ab09 AM |
5395 | /* Return true if symbol is a strong function defined in an ELFv2 |
5396 | object with st_other localentry bits of zero, ie. its local entry | |
5397 | point coincides with its global entry point. */ | |
5398 | ||
5399 | static bfd_boolean | |
5400 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5401 | { | |
5402 | return (h != NULL | |
5403 | && h->type == STT_FUNC | |
5404 | && h->root.type == bfd_link_hash_defined | |
5405 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 5406 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
5407 | && is_ppc64_elf (h->root.u.def.section->owner) |
5408 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5409 | } | |
5410 | ||
854b41e7 AM |
5411 | /* Return true if symbol is defined in a regular object file. */ |
5412 | ||
5413 | static bfd_boolean | |
5414 | is_static_defined (struct elf_link_hash_entry *h) | |
5415 | { | |
5416 | return ((h->root.type == bfd_link_hash_defined | |
5417 | || h->root.type == bfd_link_hash_defweak) | |
5418 | && h->root.u.def.section != NULL | |
5419 | && h->root.u.def.section->output_section != NULL); | |
5420 | } | |
5421 | ||
b31867b6 AM |
5422 | /* If FDH is a function descriptor symbol, return the associated code |
5423 | entry symbol if it is defined. Return NULL otherwise. */ | |
5424 | ||
5425 | static struct ppc_link_hash_entry * | |
5426 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5427 | { | |
5428 | if (fdh->is_func_descriptor) | |
5429 | { | |
5430 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5431 | if (fh->elf.root.type == bfd_link_hash_defined | |
5432 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5433 | return fh; | |
5434 | } | |
5435 | return NULL; | |
5436 | } | |
5437 | ||
5438 | /* If FH is a function code entry symbol, return the associated | |
5439 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5440 | ||
5441 | static struct ppc_link_hash_entry * | |
5442 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5443 | { | |
5444 | if (fh->oh != NULL | |
5445 | && fh->oh->is_func_descriptor) | |
5446 | { | |
5447 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5448 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5449 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5450 | return fdh; | |
5451 | } | |
5452 | return NULL; | |
5453 | } | |
5454 | ||
8c5b4e52 AM |
5455 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5456 | ||
5457 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5458 | ||
5459 | static bfd_boolean | |
5460 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5461 | { | |
5462 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5463 | ||
5464 | if (htab != NULL && htab->need_func_desc_adj) | |
5465 | { | |
5466 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5467 | htab->need_func_desc_adj = 0; | |
5468 | } | |
5469 | return bfd_elf_gc_sections (abfd, info); | |
5470 | } | |
5471 | ||
74f0fb50 AM |
5472 | /* Mark all our entry sym sections, both opd and code section. */ |
5473 | ||
5474 | static void | |
5475 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5476 | { | |
5477 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5478 | struct bfd_sym_chain *sym; | |
5479 | ||
4dfe6ac6 NC |
5480 | if (htab == NULL) |
5481 | return; | |
5482 | ||
74f0fb50 AM |
5483 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5484 | { | |
b31867b6 | 5485 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5486 | asection *sec; |
5487 | ||
5488 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5489 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5490 | if (eh == NULL) |
5491 | continue; | |
5492 | if (eh->elf.root.type != bfd_link_hash_defined | |
5493 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5494 | continue; | |
5495 | ||
b31867b6 AM |
5496 | fh = defined_code_entry (eh); |
5497 | if (fh != NULL) | |
74f0fb50 | 5498 | { |
b31867b6 | 5499 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5500 | sec->flags |= SEC_KEEP; |
5501 | } | |
5502 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5503 | && opd_entry_value (eh->elf.root.u.def.section, | |
5504 | eh->elf.root.u.def.value, | |
aef36ac1 | 5505 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5506 | sec->flags |= SEC_KEEP; |
5507 | ||
5508 | sec = eh->elf.root.u.def.section; | |
5509 | sec->flags |= SEC_KEEP; | |
5510 | } | |
5511 | } | |
5512 | ||
64d03ab5 AM |
5513 | /* Mark sections containing dynamically referenced symbols. When |
5514 | building shared libraries, we must assume that any visible symbol is | |
5515 | referenced. */ | |
5516 | ||
5517 | static bfd_boolean | |
5518 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5519 | { | |
5520 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5521 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5522 | struct ppc_link_hash_entry *fdh; |
b407645f | 5523 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5524 | |
64d03ab5 | 5525 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5526 | fdh = defined_func_desc (eh); |
5527 | if (fdh != NULL) | |
5528 | eh = fdh; | |
64d03ab5 AM |
5529 | |
5530 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5531 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5532 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5533 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5534 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5535 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5536 | && (!bfd_link_executable (info) |
e278ae05 | 5537 | || info->gc_keep_exported |
b407645f AM |
5538 | || info->export_dynamic |
5539 | || (eh->elf.dynamic | |
5540 | && d != NULL | |
2cdcc330 AM |
5541 | && (*d->match) (&d->head, NULL, |
5542 | eh->elf.root.root.string))) | |
e278ae05 | 5543 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5544 | || !bfd_hide_sym_by_version (info->version_info, |
5545 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5546 | { |
5547 | asection *code_sec; | |
b31867b6 | 5548 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5549 | |
5550 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5551 | ||
5552 | /* Function descriptor syms cause the associated | |
5553 | function code sym section to be marked. */ | |
b31867b6 AM |
5554 | fh = defined_code_entry (eh); |
5555 | if (fh != NULL) | |
5556 | { | |
5557 | code_sec = fh->elf.root.u.def.section; | |
5558 | code_sec->flags |= SEC_KEEP; | |
5559 | } | |
64d03ab5 AM |
5560 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5561 | && opd_entry_value (eh->elf.root.u.def.section, | |
5562 | eh->elf.root.u.def.value, | |
aef36ac1 | 5563 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5564 | code_sec->flags |= SEC_KEEP; |
5565 | } | |
5566 | ||
5567 | return TRUE; | |
5568 | } | |
5569 | ||
5bd4f169 AM |
5570 | /* Return the section that should be marked against GC for a given |
5571 | relocation. */ | |
5572 | ||
5573 | static asection * | |
4ce794b7 | 5574 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5575 | struct bfd_link_info *info, |
4ce794b7 AM |
5576 | Elf_Internal_Rela *rel, |
5577 | struct elf_link_hash_entry *h, | |
5578 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5579 | { |
ccfa59ea AM |
5580 | asection *rsec; |
5581 | ||
ccfa59ea AM |
5582 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5583 | function sections, as all functions are referenced in .opd. */ | |
5584 | rsec = NULL; | |
5585 | if (get_opd_info (sec) != NULL) | |
5586 | return rsec; | |
1e2f5b6e | 5587 | |
5bd4f169 AM |
5588 | if (h != NULL) |
5589 | { | |
04c9666a | 5590 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5591 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5592 | |
4ce794b7 | 5593 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5594 | switch (r_type) |
5bd4f169 AM |
5595 | { |
5596 | case R_PPC64_GNU_VTINHERIT: | |
5597 | case R_PPC64_GNU_VTENTRY: | |
5598 | break; | |
5599 | ||
5600 | default: | |
5601 | switch (h->root.type) | |
5602 | { | |
5603 | case bfd_link_hash_defined: | |
5604 | case bfd_link_hash_defweak: | |
ccfa59ea | 5605 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5606 | fdh = defined_func_desc (eh); |
5607 | if (fdh != NULL) | |
8c5b4e52 AM |
5608 | { |
5609 | /* -mcall-aixdesc code references the dot-symbol on | |
5610 | a call reloc. Mark the function descriptor too | |
5611 | against garbage collection. */ | |
5612 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5613 | if (fdh->elf.is_weakalias) |
5614 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5615 | eh = fdh; |
5616 | } | |
1e2f5b6e AM |
5617 | |
5618 | /* Function descriptor syms cause the associated | |
5619 | function code sym section to be marked. */ | |
b31867b6 AM |
5620 | fh = defined_code_entry (eh); |
5621 | if (fh != NULL) | |
ccfa59ea AM |
5622 | { |
5623 | /* They also mark their opd section. */ | |
74f0fb50 | 5624 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5625 | |
b31867b6 | 5626 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5627 | } |
8387904d AM |
5628 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5629 | && opd_entry_value (eh->elf.root.u.def.section, | |
5630 | eh->elf.root.u.def.value, | |
aef36ac1 | 5631 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5632 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5633 | else |
1e2f5b6e AM |
5634 | rsec = h->root.u.def.section; |
5635 | break; | |
5bd4f169 AM |
5636 | |
5637 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5638 | rsec = h->root.u.c.p->section; |
5639 | break; | |
5bd4f169 AM |
5640 | |
5641 | default: | |
fb34365b | 5642 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5643 | } |
5644 | } | |
5645 | } | |
5646 | else | |
5647 | { | |
74f0fb50 | 5648 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5649 | |
5650 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5651 | opd = get_opd_info (rsec); |
5652 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5653 | { |
74f0fb50 | 5654 | rsec->gc_mark = 1; |
ccfa59ea | 5655 | |
51aecdc5 | 5656 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5657 | } |
5bd4f169 AM |
5658 | } |
5659 | ||
1e2f5b6e | 5660 | return rsec; |
5bd4f169 AM |
5661 | } |
5662 | ||
deb0e272 AM |
5663 | /* The maximum size of .sfpr. */ |
5664 | #define SFPR_MAX (218*4) | |
5665 | ||
5666 | struct sfpr_def_parms | |
5667 | { | |
699733f6 AM |
5668 | const char name[12]; |
5669 | unsigned char lo, hi; | |
2cdcc330 AM |
5670 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5671 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5672 | }; |
5673 | ||
a4b6fadd AM |
5674 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5675 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5676 | instead. */ | |
deb0e272 | 5677 | |
4dfe6ac6 | 5678 | static bfd_boolean |
a4b6fadd AM |
5679 | sfpr_define (struct bfd_link_info *info, |
5680 | const struct sfpr_def_parms *parm, | |
5681 | asection *stub_sec) | |
deb0e272 AM |
5682 | { |
5683 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5684 | unsigned int i; | |
5685 | size_t len = strlen (parm->name); | |
5686 | bfd_boolean writing = FALSE; | |
699733f6 | 5687 | char sym[16]; |
deb0e272 | 5688 | |
4dfe6ac6 NC |
5689 | if (htab == NULL) |
5690 | return FALSE; | |
5691 | ||
deb0e272 AM |
5692 | memcpy (sym, parm->name, len); |
5693 | sym[len + 2] = 0; | |
5694 | ||
5695 | for (i = parm->lo; i <= parm->hi; i++) | |
5696 | { | |
a4b6fadd | 5697 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5698 | |
5699 | sym[len + 0] = i / 10 + '0'; | |
5700 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 5701 | h = (struct ppc_link_hash_entry *) |
b32547cd | 5702 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 5703 | if (stub_sec != NULL) |
deb0e272 | 5704 | { |
a4b6fadd AM |
5705 | if (h != NULL |
5706 | && h->elf.root.type == bfd_link_hash_defined | |
5707 | && h->elf.root.u.def.section == htab->sfpr) | |
5708 | { | |
5709 | struct elf_link_hash_entry *s; | |
5710 | char buf[32]; | |
5711 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5712 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5713 | if (s == NULL) | |
5714 | return FALSE; | |
5715 | if (s->root.type == bfd_link_hash_new | |
5716 | || (s->root.type = bfd_link_hash_defined | |
5717 | && s->root.u.def.section == stub_sec)) | |
5718 | { | |
5719 | s->root.type = bfd_link_hash_defined; | |
5720 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5721 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5722 | + h->elf.root.u.def.value); |
5723 | s->ref_regular = 1; | |
5724 | s->def_regular = 1; | |
5725 | s->ref_regular_nonweak = 1; | |
5726 | s->forced_local = 1; | |
5727 | s->non_elf = 0; | |
5728 | s->root.linker_def = 1; | |
5729 | } | |
5730 | } | |
5731 | continue; | |
5732 | } | |
5733 | if (h != NULL) | |
5734 | { | |
5735 | h->save_res = 1; | |
5736 | if (!h->elf.def_regular) | |
deb0e272 | 5737 | { |
a4b6fadd AM |
5738 | h->elf.root.type = bfd_link_hash_defined; |
5739 | h->elf.root.u.def.section = htab->sfpr; | |
5740 | h->elf.root.u.def.value = htab->sfpr->size; | |
5741 | h->elf.type = STT_FUNC; | |
5742 | h->elf.def_regular = 1; | |
b32547cd | 5743 | h->elf.non_elf = 0; |
a4b6fadd AM |
5744 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5745 | writing = TRUE; | |
deb0e272 | 5746 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5747 | { |
2cdcc330 AM |
5748 | htab->sfpr->contents |
5749 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5750 | if (htab->sfpr->contents == NULL) |
5751 | return FALSE; | |
5752 | } | |
deb0e272 AM |
5753 | } |
5754 | } | |
5755 | if (writing) | |
5756 | { | |
5757 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5758 | if (i != parm->hi) | |
5759 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5760 | else | |
5761 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5762 | htab->sfpr->size = p - htab->sfpr->contents; | |
5763 | } | |
5764 | } | |
5765 | ||
5766 | return TRUE; | |
5767 | } | |
5768 | ||
5769 | static bfd_byte * | |
5770 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5771 | { | |
5772 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5773 | return p + 4; | |
5774 | } | |
5775 | ||
5776 | static bfd_byte * | |
5777 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5778 | { | |
5779 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5780 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5781 | p = p + 4; |
5782 | bfd_put_32 (abfd, BLR, p); | |
5783 | return p + 4; | |
5784 | } | |
5785 | ||
5786 | static bfd_byte * | |
5787 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5788 | { | |
5789 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5790 | return p + 4; | |
5791 | } | |
5792 | ||
5793 | static bfd_byte * | |
5794 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5795 | { | |
a078d95a | 5796 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5797 | p = p + 4; |
5798 | p = restgpr0 (abfd, p, r); | |
5799 | bfd_put_32 (abfd, MTLR_R0, p); | |
5800 | p = p + 4; | |
5801 | if (r == 29) | |
5802 | { | |
5803 | p = restgpr0 (abfd, p, 30); | |
5804 | p = restgpr0 (abfd, p, 31); | |
5805 | } | |
5806 | bfd_put_32 (abfd, BLR, p); | |
5807 | return p + 4; | |
5808 | } | |
5809 | ||
5810 | static bfd_byte * | |
5811 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5812 | { | |
5813 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5814 | return p + 4; | |
5815 | } | |
5816 | ||
5817 | static bfd_byte * | |
5818 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5819 | { | |
5820 | p = savegpr1 (abfd, p, r); | |
5821 | bfd_put_32 (abfd, BLR, p); | |
5822 | return p + 4; | |
5823 | } | |
5824 | ||
5825 | static bfd_byte * | |
5826 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5827 | { | |
5828 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5829 | return p + 4; | |
5830 | } | |
5831 | ||
5832 | static bfd_byte * | |
5833 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5834 | { | |
5835 | p = restgpr1 (abfd, p, r); | |
5836 | bfd_put_32 (abfd, BLR, p); | |
5837 | return p + 4; | |
5838 | } | |
5839 | ||
5840 | static bfd_byte * | |
5841 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5842 | { | |
5843 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5844 | return p + 4; | |
5845 | } | |
5846 | ||
5847 | static bfd_byte * | |
5848 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5849 | { | |
5850 | p = savefpr (abfd, p, r); | |
a078d95a | 5851 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5852 | p = p + 4; |
5853 | bfd_put_32 (abfd, BLR, p); | |
5854 | return p + 4; | |
5855 | } | |
5856 | ||
5857 | static bfd_byte * | |
5858 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5859 | { | |
5860 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5861 | return p + 4; | |
5862 | } | |
5863 | ||
5864 | static bfd_byte * | |
5865 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5866 | { | |
a078d95a | 5867 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5868 | p = p + 4; |
5869 | p = restfpr (abfd, p, r); | |
5870 | bfd_put_32 (abfd, MTLR_R0, p); | |
5871 | p = p + 4; | |
5872 | if (r == 29) | |
5873 | { | |
5874 | p = restfpr (abfd, p, 30); | |
5875 | p = restfpr (abfd, p, 31); | |
5876 | } | |
5877 | bfd_put_32 (abfd, BLR, p); | |
5878 | return p + 4; | |
5879 | } | |
5880 | ||
5881 | static bfd_byte * | |
5882 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5883 | { | |
5884 | p = savefpr (abfd, p, r); | |
5885 | bfd_put_32 (abfd, BLR, p); | |
5886 | return p + 4; | |
5887 | } | |
5888 | ||
5889 | static bfd_byte * | |
5890 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5891 | { | |
5892 | p = restfpr (abfd, p, r); | |
5893 | bfd_put_32 (abfd, BLR, p); | |
5894 | return p + 4; | |
5895 | } | |
5896 | ||
5897 | static bfd_byte * | |
5898 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5899 | { | |
5900 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5901 | p = p + 4; | |
5902 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5903 | return p + 4; | |
5904 | } | |
5905 | ||
5906 | static bfd_byte * | |
5907 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5908 | { | |
5909 | p = savevr (abfd, p, r); | |
5910 | bfd_put_32 (abfd, BLR, p); | |
5911 | return p + 4; | |
5912 | } | |
5913 | ||
5914 | static bfd_byte * | |
5915 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5916 | { | |
5917 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5918 | p = p + 4; | |
5919 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5920 | return p + 4; | |
5921 | } | |
5922 | ||
5923 | static bfd_byte * | |
5924 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5925 | { | |
5926 | p = restvr (abfd, p, r); | |
5927 | bfd_put_32 (abfd, BLR, p); | |
5928 | return p + 4; | |
5929 | } | |
5930 | ||
e86ce104 AM |
5931 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5932 | information on function code symbol entries to their corresponding | |
5933 | function descriptor symbol entries. */ | |
deb0e272 | 5934 | |
b34976b6 | 5935 | static bfd_boolean |
4ce794b7 | 5936 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5937 | { |
e86ce104 | 5938 | struct bfd_link_info *info; |
65f38f15 | 5939 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
5940 | struct ppc_link_hash_entry *fh; |
5941 | struct ppc_link_hash_entry *fdh; | |
5942 | bfd_boolean force_local; | |
5bd4f169 | 5943 | |
50bc7936 AM |
5944 | fh = (struct ppc_link_hash_entry *) h; |
5945 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5946 | return TRUE; |
e86ce104 | 5947 | |
8c5b4e52 AM |
5948 | if (!fh->is_func) |
5949 | return TRUE; | |
5950 | ||
5951 | if (fh->elf.root.root.string[0] != '.' | |
5952 | || fh->elf.root.root.string[1] == '\0') | |
5953 | return TRUE; | |
5954 | ||
4ce794b7 | 5955 | info = inf; |
65f38f15 | 5956 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5957 | if (htab == NULL) |
5958 | return FALSE; | |
5bd4f169 | 5959 | |
8c5b4e52 AM |
5960 | /* Find the corresponding function descriptor symbol. */ |
5961 | fdh = lookup_fdh (fh, htab); | |
5962 | ||
c09bdfe5 AM |
5963 | /* Resolve undefined references to dot-symbols as the value |
5964 | in the function descriptor, if we have one in a regular object. | |
5965 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5966 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
5967 | if ((fh->elf.root.type == bfd_link_hash_undefined |
5968 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
5969 | && (fdh->elf.root.type == bfd_link_hash_defined | |
5970 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
5971 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
5972 | && opd_entry_value (fdh->elf.root.u.def.section, | |
5973 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 5974 | &fh->elf.root.u.def.section, |
aef36ac1 | 5975 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 5976 | { |
b31867b6 | 5977 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 5978 | fh->elf.forced_local = 1; |
b31867b6 AM |
5979 | fh->elf.def_regular = fdh->elf.def_regular; |
5980 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
5981 | } |
5982 | ||
8c5b4e52 AM |
5983 | if (!fh->elf.dynamic) |
5984 | { | |
5985 | struct plt_entry *ent; | |
5bd4f169 | 5986 | |
8c5b4e52 AM |
5987 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
5988 | if (ent->plt.refcount > 0) | |
5989 | break; | |
5990 | if (ent == NULL) | |
5991 | return TRUE; | |
5992 | } | |
5bd4f169 | 5993 | |
8c5b4e52 | 5994 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 5995 | if (fdh == NULL |
0e1862bb | 5996 | && !bfd_link_executable (info) |
50bc7936 AM |
5997 | && (fh->elf.root.type == bfd_link_hash_undefined |
5998 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5999 | { | |
908b32fc | 6000 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6001 | if (fdh == NULL) |
6002 | return FALSE; | |
50bc7936 | 6003 | } |
648cca2c | 6004 | |
8c5b4e52 | 6005 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6006 | if (fdh != NULL |
6007 | && fdh->fake | |
8c5b4e52 AM |
6008 | && (fh->elf.root.type == bfd_link_hash_defined |
6009 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6010 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6011 | |
8c5b4e52 AM |
6012 | /* Transfer dynamic linking information to the function descriptor. */ |
6013 | if (fdh != NULL) | |
6014 | { | |
f5385ebf AM |
6015 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6016 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6017 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6018 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6019 | fdh->elf.dynamic |= fh->elf.dynamic; |
6020 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6021 | || fh->elf.type == STT_FUNC | |
6022 | || fh->elf.type == STT_GNU_IFUNC); | |
6023 | move_plt_plist (fh, fdh); | |
6024 | ||
6025 | if (!fdh->elf.forced_local | |
6026 | && fh->elf.dynindx != -1) | |
6027 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6028 | return FALSE; | |
e86ce104 AM |
6029 | } |
6030 | ||
50bc7936 AM |
6031 | /* Now that the info is on the function descriptor, clear the |
6032 | function code sym info. Any function code syms for which we | |
6033 | don't have a definition in a regular file, we force local. | |
6034 | This prevents a shared library from exporting syms that have | |
6035 | been imported from another library. Function code syms that | |
6036 | are really in the library we must leave global to prevent the | |
6037 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6038 | force_local = (!fh->elf.def_regular |
6039 | || fdh == NULL | |
6040 | || !fdh->elf.def_regular | |
6041 | || fdh->elf.forced_local); | |
50bc7936 AM |
6042 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6043 | ||
b34976b6 | 6044 | return TRUE; |
e86ce104 | 6045 | } |
40b8271b | 6046 | |
a4b6fadd AM |
6047 | static const struct sfpr_def_parms save_res_funcs[] = |
6048 | { | |
6049 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6050 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6051 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6052 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6053 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6054 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6055 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6056 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6057 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6058 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6059 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6060 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6061 | }; | |
6062 | ||
e86ce104 | 6063 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6064 | this hook to a) provide some gcc support functions, and b) transfer |
6065 | dynamic linking information gathered so far on function code symbol | |
6066 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6067 | |
b34976b6 | 6068 | static bfd_boolean |
4ce794b7 AM |
6069 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6070 | struct bfd_link_info *info) | |
e86ce104 AM |
6071 | { |
6072 | struct ppc_link_hash_table *htab; | |
6073 | ||
6074 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6075 | if (htab == NULL) |
6076 | return FALSE; | |
6077 | ||
b32547cd AM |
6078 | /* Provide any missing _save* and _rest* functions. */ |
6079 | if (htab->sfpr != NULL) | |
6080 | { | |
6081 | unsigned int i; | |
6082 | ||
6083 | htab->sfpr->size = 0; | |
6084 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6085 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
6086 | return FALSE; | |
6087 | if (htab->sfpr->size == 0) | |
6088 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6089 | } | |
6090 | ||
6091 | if (bfd_link_relocatable (info)) | |
6092 | return TRUE; | |
6093 | ||
6094 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
6095 | { |
6096 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6097 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6098 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6099 | if (!htab->elf.hgot->def_regular |
6100 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6101 | { | |
6102 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6103 | htab->elf.hgot->root.u.def.value = 0; | |
6104 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6105 | htab->elf.hgot->def_regular = 1; | |
6106 | htab->elf.hgot->root.linker_def = 1; | |
6107 | } | |
dba6fa9b | 6108 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6109 | htab->elf.hgot->other |
6110 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6111 | } |
c66bb0ee | 6112 | |
8c5b4e52 AM |
6113 | if (htab->need_func_desc_adj) |
6114 | { | |
6115 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6116 | htab->need_func_desc_adj = 0; | |
6117 | } | |
805fc799 | 6118 | |
b34976b6 | 6119 | return TRUE; |
e86ce104 AM |
6120 | } |
6121 | ||
98bbb1b8 | 6122 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 6123 | |
98bbb1b8 | 6124 | static asection * |
a345bc8d AM |
6125 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
6126 | { | |
6127 | struct ppc_link_hash_entry *eh; | |
6128 | struct elf_dyn_relocs *p; | |
6129 | ||
6130 | eh = (struct ppc_link_hash_entry *) h; | |
6131 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6132 | { | |
6133 | asection *s = p->sec->output_section; | |
6134 | ||
6135 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 6136 | return p->sec; |
a345bc8d | 6137 | } |
98bbb1b8 | 6138 | return NULL; |
a345bc8d AM |
6139 | } |
6140 | ||
d311bc8b | 6141 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6142 | aliases, that apply to read-only sections. Cannot be used after |
6143 | size_dynamic_sections. */ | |
d311bc8b AM |
6144 | |
6145 | static bfd_boolean | |
6146 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6147 | { | |
6148 | struct ppc_link_hash_entry *eh; | |
6149 | ||
6150 | eh = (struct ppc_link_hash_entry *) h; | |
6151 | do | |
6152 | { | |
6153 | if (readonly_dynrelocs (&eh->elf)) | |
6154 | return TRUE; | |
ab2477e1 | 6155 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
2cdcc330 AM |
6156 | } |
6157 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
6158 | |
6159 | return FALSE; | |
6160 | } | |
8a2058b5 | 6161 | |
8a9e8e72 AM |
6162 | /* Return whether EH has pc-relative dynamic relocs. */ |
6163 | ||
6164 | static bfd_boolean | |
6165 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
6166 | { | |
6167 | struct elf_dyn_relocs *p; | |
6168 | ||
6169 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6170 | if (p->pc_count != 0) | |
6171 | return TRUE; | |
6172 | return FALSE; | |
6173 | } | |
6174 | ||
8a2058b5 AM |
6175 | /* Return true if a global entry stub will be created for H. Valid |
6176 | for ELFv2 before plt entries have been allocated. */ | |
6177 | ||
6178 | static bfd_boolean | |
6179 | global_entry_stub (struct elf_link_hash_entry *h) | |
6180 | { | |
6181 | struct plt_entry *pent; | |
6182 | ||
6183 | if (!h->pointer_equality_needed | |
6184 | || h->def_regular) | |
6185 | return FALSE; | |
6186 | ||
6187 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6188 | if (pent->plt.refcount > 0 | |
6189 | && pent->addend == 0) | |
6190 | return TRUE; | |
6191 | ||
6192 | return FALSE; | |
6193 | } | |
6194 | ||
e86ce104 AM |
6195 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6196 | regular object. The current definition is in some section of the | |
6197 | dynamic object, but we're not including those sections. We have to | |
6198 | change the definition to something the rest of the link can | |
6199 | understand. */ | |
6200 | ||
b34976b6 | 6201 | static bfd_boolean |
4ce794b7 AM |
6202 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6203 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6204 | { |
6205 | struct ppc_link_hash_table *htab; | |
5474d94f | 6206 | asection *s, *srel; |
e86ce104 AM |
6207 | |
6208 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6209 | if (htab == NULL) |
6210 | return FALSE; | |
e86ce104 AM |
6211 | |
6212 | /* Deal with function syms. */ | |
6213 | if (h->type == STT_FUNC | |
e054468f | 6214 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6215 | || h->needs_plt) |
e86ce104 | 6216 | { |
529fe20e AM |
6217 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
6218 | || SYMBOL_CALLS_LOCAL (info, h) | |
6219 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6220 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6221 | function symbol is local and not an ifunc. We keep dynamic | |
6222 | relocs for ifuncs when local rather than always emitting a | |
6223 | plt call stub for them and defining the symbol on the call | |
6224 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6225 | is defined on a descriptor, not code) and it can be faster at | |
6226 | run-time due to not needing to bounce through a stub. The | |
6227 | dyn_relocs for ifuncs will be applied even in a static | |
6228 | executable. */ | |
6229 | if (!bfd_link_pic (info) | |
6230 | && h->type != STT_GNU_IFUNC | |
6231 | && local) | |
6232 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6233 | ||
e86ce104 AM |
6234 | /* Clear procedure linkage table information for any symbol that |
6235 | won't need a .plt entry. */ | |
411e1bfb AM |
6236 | struct plt_entry *ent; |
6237 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6238 | if (ent->plt.refcount > 0) | |
6239 | break; | |
8387904d | 6240 | if (ent == NULL |
2d7ad24e AM |
6241 | || (h->type != STT_GNU_IFUNC |
6242 | && local | |
3e04d765 AM |
6243 | && (htab->can_convert_all_inline_plt |
6244 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
6245 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 6246 | { |
411e1bfb | 6247 | h->plt.plist = NULL; |
f5385ebf | 6248 | h->needs_plt = 0; |
d1eca1e4 | 6249 | h->pointer_equality_needed = 0; |
40b8271b | 6250 | } |
8a2058b5 | 6251 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6252 | { |
d1eca1e4 AM |
6253 | /* Taking a function's address in a read/write section |
6254 | doesn't require us to define the function symbol in the | |
6255 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6256 | be used instead. The reason we prefer a few more dynamic |
6257 | relocs is that calling via a global entry stub costs a | |
6258 | few more instructions, and pointer_equality_needed causes | |
6259 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6260 | if (global_entry_stub (h)) |
d1eca1e4 | 6261 | { |
ab2477e1 | 6262 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
6263 | { |
6264 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6265 | /* If we haven't seen a branch reloc and the symbol |
6266 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6267 | if (!h->needs_plt) |
6268 | h->plt.plist = NULL; | |
6269 | } | |
6270 | else if (!bfd_link_pic (info)) | |
6271 | /* We are going to be defining the function symbol on the | |
6272 | plt stub, so no dyn_relocs needed when non-pic. */ | |
6273 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
6274 | } |
6275 | ||
3988aed5 AM |
6276 | /* ELFv2 function symbols can't have copy relocs. */ |
6277 | return TRUE; | |
6278 | } | |
6279 | else if (!h->needs_plt | |
ab2477e1 | 6280 | && !readonly_dynrelocs (h)) |
3988aed5 | 6281 | { |
04383fd1 AM |
6282 | /* If we haven't seen a branch reloc and the symbol isn't an |
6283 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6284 | h->plt.plist = NULL; |
6285 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6286 | return TRUE; |
6287 | } | |
5bd4f169 | 6288 | } |
bbd7ec4a | 6289 | else |
411e1bfb | 6290 | h->plt.plist = NULL; |
5bd4f169 AM |
6291 | |
6292 | /* If this is a weak symbol, and there is a real definition, the | |
6293 | processor independent code will have arranged for us to see the | |
6294 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6295 | if (h->is_weakalias) |
5bd4f169 | 6296 | { |
60d67dc8 AM |
6297 | struct elf_link_hash_entry *def = weakdef (h); |
6298 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6299 | h->root.u.def.section = def->root.u.def.section; | |
6300 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6301 | if (def->root.u.def.section == htab->elf.sdynbss |
6302 | || def->root.u.def.section == htab->elf.sdynrelro) | |
6303 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 6304 | return TRUE; |
5bd4f169 AM |
6305 | } |
6306 | ||
5bd4f169 AM |
6307 | /* If we are creating a shared library, we must presume that the |
6308 | only references to the symbol are via the global offset table. | |
6309 | For such cases we need not do anything here; the relocations will | |
6310 | be handled correctly by relocate_section. */ | |
0e1862bb | 6311 | if (bfd_link_pic (info)) |
b34976b6 | 6312 | return TRUE; |
5bd4f169 | 6313 | |
65f38f15 AM |
6314 | /* If there are no references to this symbol that do not use the |
6315 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6316 | if (!h->non_got_ref) |
b34976b6 | 6317 | return TRUE; |
65f38f15 | 6318 | |
b186458a | 6319 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6320 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6321 | |
d93d1c80 AM |
6322 | /* If -z nocopyreloc was given, don't generate them either. */ |
6323 | || info->nocopyreloc | |
a127494f | 6324 | |
dce2246a | 6325 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6326 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 6327 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 6328 | |
d93d1c80 AM |
6329 | /* Protected variables do not work with .dynbss. The copy in |
6330 | .dynbss won't be used by the shared library with the protected | |
6331 | definition for the variable. Text relocations are preferable | |
6332 | to an incorrect program. */ | |
6333 | || h->protected_def) | |
529fe20e | 6334 | return TRUE; |
a127494f | 6335 | |
5d35169e | 6336 | if (h->plt.plist != NULL) |
97b639ba AM |
6337 | { |
6338 | /* We should never get here, but unfortunately there are versions | |
6339 | of gcc out there that improperly (for this ABI) put initialized | |
6340 | function pointers, vtable refs and suchlike in read-only | |
6341 | sections. Allow them to proceed, but warn that this might | |
6342 | break at runtime. */ | |
25f53a85 | 6343 | info->callbacks->einfo |
c1c8c1ef | 6344 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6345 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6346 | h->root.root.string); |
6347 | } | |
5d35169e AM |
6348 | |
6349 | /* This is a reference to a symbol defined by a dynamic object which | |
6350 | is not a function. */ | |
6351 | ||
5bd4f169 AM |
6352 | /* We must allocate the symbol in our .dynbss section, which will |
6353 | become part of the .bss section of the executable. There will be | |
6354 | an entry for this symbol in the .dynsym section. The dynamic | |
6355 | object will contain position independent code, so all references | |
6356 | from the dynamic object to this symbol will go through the global | |
6357 | offset table. The dynamic linker will use the .dynsym entry to | |
6358 | determine the address it must put in the global offset table, so | |
6359 | both the dynamic object and the regular object will refer to the | |
6360 | same memory location for the variable. */ | |
5474d94f AM |
6361 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6362 | { | |
6363 | s = htab->elf.sdynrelro; | |
6364 | srel = htab->elf.sreldynrelro; | |
6365 | } | |
6366 | else | |
6367 | { | |
6368 | s = htab->elf.sdynbss; | |
6369 | srel = htab->elf.srelbss; | |
6370 | } | |
1d7e9d18 | 6371 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6372 | { |
4a7e5234 AM |
6373 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6374 | linker to copy the initial value out of the dynamic object | |
6375 | and into the runtime process image. */ | |
5474d94f | 6376 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6377 | h->needs_copy = 1; |
5bd4f169 AM |
6378 | } |
6379 | ||
529fe20e AM |
6380 | /* We no longer want dyn_relocs. */ |
6381 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 6382 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6383 | } |
6384 | ||
e86ce104 AM |
6385 | /* If given a function descriptor symbol, hide both the function code |
6386 | sym and the descriptor. */ | |
6387 | static void | |
4ce794b7 AM |
6388 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6389 | struct elf_link_hash_entry *h, | |
6390 | bfd_boolean force_local) | |
e86ce104 | 6391 | { |
34814b9f | 6392 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6393 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6394 | ||
87469ba2 AM |
6395 | if (ppc_hash_table (info) == NULL) |
6396 | return; | |
6397 | ||
34814b9f AM |
6398 | eh = (struct ppc_link_hash_entry *) h; |
6399 | if (eh->is_func_descriptor) | |
e86ce104 | 6400 | { |
34814b9f | 6401 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6402 | |
721956f4 | 6403 | if (fh == NULL) |
d1329ca3 AM |
6404 | { |
6405 | const char *p, *q; | |
b8ac2841 | 6406 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6407 | char save; |
6408 | ||
6409 | /* We aren't supposed to use alloca in BFD because on | |
6410 | systems which do not have alloca the version in libiberty | |
6411 | calls xmalloc, which might cause the program to crash | |
6412 | when it runs out of memory. This function doesn't have a | |
6413 | return status, so there's no way to gracefully return an | |
6414 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6415 | accessed; It's either a string in an ELF string table, |
6416 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6417 | |
34814b9f | 6418 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6419 | save = *p; |
6420 | *(char *) p = '.'; | |
34814b9f | 6421 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 6422 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6423 | *(char *) p = save; |
6424 | ||
6425 | /* Unfortunately, if it so happens that the string we were | |
6426 | looking for was allocated immediately before this string, | |
6427 | then we overwrote the string terminator. That's the only | |
6428 | reason the lookup should fail. */ | |
6429 | if (fh == NULL) | |
6430 | { | |
34814b9f AM |
6431 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6432 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6433 | --q, --p; |
34814b9f AM |
6434 | if (q < eh->elf.root.root.string && *p == '.') |
6435 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 6436 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6437 | } |
6438 | if (fh != NULL) | |
6439 | { | |
34814b9f AM |
6440 | eh->oh = fh; |
6441 | fh->oh = eh; | |
d1329ca3 AM |
6442 | } |
6443 | } | |
e86ce104 | 6444 | if (fh != NULL) |
34814b9f | 6445 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6446 | } |
6447 | } | |
6448 | ||
411e1bfb | 6449 | static bfd_boolean |
8843416a AM |
6450 | get_sym_h (struct elf_link_hash_entry **hp, |
6451 | Elf_Internal_Sym **symp, | |
6452 | asection **symsecp, | |
f961d9dd | 6453 | unsigned char **tls_maskp, |
8843416a AM |
6454 | Elf_Internal_Sym **locsymsp, |
6455 | unsigned long r_symndx, | |
6456 | bfd *ibfd) | |
411e1bfb | 6457 | { |
0ffa91dd | 6458 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6459 | |
6460 | if (r_symndx >= symtab_hdr->sh_info) | |
6461 | { | |
6462 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6463 | struct elf_link_hash_entry *h; | |
6464 | ||
6465 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6466 | h = elf_follow_link (h); |
411e1bfb AM |
6467 | |
6468 | if (hp != NULL) | |
6469 | *hp = h; | |
6470 | ||
6471 | if (symp != NULL) | |
6472 | *symp = NULL; | |
6473 | ||
6474 | if (symsecp != NULL) | |
6475 | { | |
6476 | asection *symsec = NULL; | |
6477 | if (h->root.type == bfd_link_hash_defined | |
6478 | || h->root.type == bfd_link_hash_defweak) | |
6479 | symsec = h->root.u.def.section; | |
6480 | *symsecp = symsec; | |
6481 | } | |
6482 | ||
e7b938ca | 6483 | if (tls_maskp != NULL) |
411e1bfb AM |
6484 | { |
6485 | struct ppc_link_hash_entry *eh; | |
6486 | ||
6487 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6488 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6489 | } |
6490 | } | |
6491 | else | |
6492 | { | |
6493 | Elf_Internal_Sym *sym; | |
6494 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6495 | ||
6496 | if (locsyms == NULL) | |
6497 | { | |
6498 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6499 | if (locsyms == NULL) | |
6500 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6501 | symtab_hdr->sh_info, | |
6502 | 0, NULL, NULL, NULL); | |
6503 | if (locsyms == NULL) | |
6504 | return FALSE; | |
6505 | *locsymsp = locsyms; | |
6506 | } | |
6507 | sym = locsyms + r_symndx; | |
6508 | ||
6509 | if (hp != NULL) | |
6510 | *hp = NULL; | |
6511 | ||
6512 | if (symp != NULL) | |
6513 | *symp = sym; | |
6514 | ||
6515 | if (symsecp != NULL) | |
cb33740c | 6516 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6517 | |
e7b938ca | 6518 | if (tls_maskp != NULL) |
411e1bfb AM |
6519 | { |
6520 | struct got_entry **lgot_ents; | |
f961d9dd | 6521 | unsigned char *tls_mask; |
411e1bfb | 6522 | |
e7b938ca | 6523 | tls_mask = NULL; |
411e1bfb AM |
6524 | lgot_ents = elf_local_got_ents (ibfd); |
6525 | if (lgot_ents != NULL) | |
6526 | { | |
e054468f AM |
6527 | struct plt_entry **local_plt = (struct plt_entry **) |
6528 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6529 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6530 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6531 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6532 | } |
e7b938ca | 6533 | *tls_maskp = tls_mask; |
411e1bfb AM |
6534 | } |
6535 | } | |
6536 | return TRUE; | |
6537 | } | |
6538 | ||
e7b938ca | 6539 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6540 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6541 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6542 | |
6543 | static int | |
f961d9dd | 6544 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6545 | unsigned long *toc_symndx, |
6546 | bfd_vma *toc_addend, | |
0d4792f7 | 6547 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6548 | const Elf_Internal_Rela *rel, |
6549 | bfd *ibfd) | |
411e1bfb AM |
6550 | { |
6551 | unsigned long r_symndx; | |
0d4792f7 | 6552 | int next_r; |
411e1bfb AM |
6553 | struct elf_link_hash_entry *h; |
6554 | Elf_Internal_Sym *sym; | |
6555 | asection *sec; | |
6556 | bfd_vma off; | |
6557 | ||
6558 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6559 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6560 | return 0; |
411e1bfb | 6561 | |
37da22e5 AM |
6562 | if ((*tls_maskp != NULL |
6563 | && (**tls_maskp & TLS_TLS) != 0 | |
6564 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6565 | || sec == NULL |
6bee8834 | 6566 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6567 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6568 | return 1; |
411e1bfb AM |
6569 | |
6570 | /* Look inside a TOC section too. */ | |
6571 | if (h != NULL) | |
6572 | { | |
6573 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6574 | off = h->root.u.def.value; | |
6575 | } | |
6576 | else | |
6577 | off = sym->st_value; | |
6578 | off += rel->r_addend; | |
6579 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6580 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6581 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6582 | if (toc_symndx != NULL) |
6583 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6584 | if (toc_addend != NULL) |
6585 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6586 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6587 | return 0; | |
854b41e7 | 6588 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6589 | && (next_r == -1 || next_r == -2)) |
6590 | return 1 - next_r; | |
951fd09b | 6591 | return 1; |
411e1bfb AM |
6592 | } |
6593 | ||
3b421ab3 AM |
6594 | /* Find (or create) an entry in the tocsave hash table. */ |
6595 | ||
6596 | static struct tocsave_entry * | |
6597 | tocsave_find (struct ppc_link_hash_table *htab, | |
6598 | enum insert_option insert, | |
6599 | Elf_Internal_Sym **local_syms, | |
6600 | const Elf_Internal_Rela *irela, | |
6601 | bfd *ibfd) | |
6602 | { | |
6603 | unsigned long r_indx; | |
6604 | struct elf_link_hash_entry *h; | |
6605 | Elf_Internal_Sym *sym; | |
6606 | struct tocsave_entry ent, *p; | |
6607 | hashval_t hash; | |
6608 | struct tocsave_entry **slot; | |
6609 | ||
6610 | r_indx = ELF64_R_SYM (irela->r_info); | |
6611 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6612 | return NULL; | |
6613 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6614 | { | |
4eca0228 | 6615 | _bfd_error_handler |
871b3ab2 | 6616 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6617 | return NULL; |
6618 | } | |
6619 | ||
6620 | if (h != NULL) | |
6621 | ent.offset = h->root.u.def.value; | |
6622 | else | |
6623 | ent.offset = sym->st_value; | |
6624 | ent.offset += irela->r_addend; | |
6625 | ||
6626 | hash = tocsave_htab_hash (&ent); | |
6627 | slot = ((struct tocsave_entry **) | |
6628 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6629 | if (slot == NULL) | |
6630 | return NULL; | |
6631 | ||
6632 | if (*slot == NULL) | |
6633 | { | |
6634 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6635 | if (p == NULL) | |
6636 | return NULL; | |
6637 | *p = ent; | |
6638 | *slot = p; | |
6639 | } | |
6640 | return *slot; | |
6641 | } | |
6642 | ||
754021d0 | 6643 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6644 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6645 | |
6646 | static bfd_boolean | |
6647 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6648 | { | |
6649 | struct ppc_link_hash_entry *eh; | |
6650 | asection *sym_sec; | |
74f0fb50 | 6651 | struct _opd_sec_data *opd; |
754021d0 AM |
6652 | |
6653 | if (h->root.type == bfd_link_hash_indirect) | |
6654 | return TRUE; | |
6655 | ||
754021d0 AM |
6656 | if (h->root.type != bfd_link_hash_defined |
6657 | && h->root.type != bfd_link_hash_defweak) | |
6658 | return TRUE; | |
6659 | ||
6660 | eh = (struct ppc_link_hash_entry *) h; | |
6661 | if (eh->adjust_done) | |
6662 | return TRUE; | |
6663 | ||
6664 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6665 | opd = get_opd_info (sym_sec); |
6666 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6667 | { |
51aecdc5 | 6668 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6669 | if (adjust == -1) |
6670 | { | |
6671 | /* This entry has been deleted. */ | |
b3fac117 | 6672 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6673 | if (dsec == NULL) |
6674 | { | |
6675 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6676 | if (discarded_section (dsec)) |
81688140 | 6677 | { |
b3fac117 | 6678 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6679 | break; |
6680 | } | |
6681 | } | |
4025353c | 6682 | eh->elf.root.u.def.value = 0; |
81688140 | 6683 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6684 | } |
6685 | else | |
6686 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6687 | eh->adjust_done = 1; |
6688 | } | |
6689 | return TRUE; | |
6690 | } | |
6691 | ||
8c1d1bb8 | 6692 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6693 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6694 | have already been determined. */ |
6695 | ||
6696 | static bfd_boolean | |
6697 | dec_dynrel_count (bfd_vma r_info, | |
6698 | asection *sec, | |
6699 | struct bfd_link_info *info, | |
6700 | Elf_Internal_Sym **local_syms, | |
6701 | struct elf_link_hash_entry *h, | |
19e08130 | 6702 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6703 | { |
6704 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6705 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6706 | |
6707 | /* Can this reloc be dynamic? This switch, and later tests here | |
6708 | should be kept in sync with the code in check_relocs. */ | |
6709 | r_type = ELF64_R_TYPE (r_info); | |
6710 | switch (r_type) | |
6711 | { | |
6712 | default: | |
6713 | return TRUE; | |
6714 | ||
6715 | case R_PPC64_TPREL16: | |
6716 | case R_PPC64_TPREL16_LO: | |
6717 | case R_PPC64_TPREL16_HI: | |
6718 | case R_PPC64_TPREL16_HA: | |
6719 | case R_PPC64_TPREL16_DS: | |
6720 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6721 | case R_PPC64_TPREL16_HIGH: |
6722 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
6723 | case R_PPC64_TPREL16_HIGHER: |
6724 | case R_PPC64_TPREL16_HIGHERA: | |
6725 | case R_PPC64_TPREL16_HIGHEST: | |
6726 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
6727 | case R_PPC64_TPREL64: |
6728 | case R_PPC64_DTPMOD64: | |
6729 | case R_PPC64_DTPREL64: | |
6730 | case R_PPC64_ADDR64: | |
6731 | case R_PPC64_REL30: | |
6732 | case R_PPC64_REL32: | |
6733 | case R_PPC64_REL64: | |
6734 | case R_PPC64_ADDR14: | |
6735 | case R_PPC64_ADDR14_BRNTAKEN: | |
6736 | case R_PPC64_ADDR14_BRTAKEN: | |
6737 | case R_PPC64_ADDR16: | |
6738 | case R_PPC64_ADDR16_DS: | |
6739 | case R_PPC64_ADDR16_HA: | |
6740 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
6741 | case R_PPC64_ADDR16_HIGH: |
6742 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
6743 | case R_PPC64_ADDR16_HIGHER: |
6744 | case R_PPC64_ADDR16_HIGHERA: | |
6745 | case R_PPC64_ADDR16_HIGHEST: | |
6746 | case R_PPC64_ADDR16_HIGHESTA: | |
6747 | case R_PPC64_ADDR16_LO: | |
6748 | case R_PPC64_ADDR16_LO_DS: | |
6749 | case R_PPC64_ADDR24: | |
6750 | case R_PPC64_ADDR32: | |
6751 | case R_PPC64_UADDR16: | |
6752 | case R_PPC64_UADDR32: | |
6753 | case R_PPC64_UADDR64: | |
6754 | case R_PPC64_TOC: | |
5663e321 AM |
6755 | case R_PPC64_D34: |
6756 | case R_PPC64_D34_LO: | |
6757 | case R_PPC64_D34_HI30: | |
6758 | case R_PPC64_D34_HA30: | |
6759 | case R_PPC64_ADDR16_HIGHER34: | |
6760 | case R_PPC64_ADDR16_HIGHERA34: | |
6761 | case R_PPC64_ADDR16_HIGHEST34: | |
6762 | case R_PPC64_ADDR16_HIGHESTA34: | |
6763 | case R_PPC64_D28: | |
8c1d1bb8 AM |
6764 | break; |
6765 | } | |
6766 | ||
6767 | if (local_syms != NULL) | |
6768 | { | |
6769 | unsigned long r_symndx; | |
8c1d1bb8 AM |
6770 | bfd *ibfd = sec->owner; |
6771 | ||
6772 | r_symndx = ELF64_R_SYM (r_info); | |
6773 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6774 | return FALSE; | |
6775 | } | |
6776 | ||
0e1862bb | 6777 | if ((bfd_link_pic (info) |
1d483afe | 6778 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 6779 | || (h != NULL |
198f1157 | 6780 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
6781 | || h->root.type == bfd_link_hash_defweak |
6782 | || !h->def_regular)))) | |
6783 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 6784 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
6785 | && h != NULL |
6786 | && (h->root.type == bfd_link_hash_defweak | |
6787 | || !h->def_regular))) | |
6788 | ; | |
6789 | else | |
6790 | return TRUE; | |
6791 | ||
6792 | if (h != NULL) | |
6edfbbad | 6793 | { |
19e08130 AM |
6794 | struct elf_dyn_relocs *p; |
6795 | struct elf_dyn_relocs **pp; | |
6796 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6797 | ||
6798 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6799 | with local syms for a given section. Also, symbol flags are | |
6800 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
6801 | report a dynreloc miscount. */ | |
6802 | if (*pp == NULL && info->gc_sections) | |
6803 | return TRUE; | |
6804 | ||
6805 | while ((p = *pp) != NULL) | |
60124e18 | 6806 | { |
19e08130 AM |
6807 | if (p->sec == sec) |
6808 | { | |
6809 | if (!must_be_dyn_reloc (info, r_type)) | |
6810 | p->pc_count -= 1; | |
6811 | p->count -= 1; | |
6812 | if (p->count == 0) | |
6813 | *pp = p->next; | |
6814 | return TRUE; | |
6815 | } | |
6816 | pp = &p->next; | |
60124e18 | 6817 | } |
6edfbbad | 6818 | } |
19e08130 AM |
6819 | else |
6820 | { | |
6821 | struct ppc_dyn_relocs *p; | |
6822 | struct ppc_dyn_relocs **pp; | |
6823 | void *vpp; | |
6824 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 6825 | |
19e08130 AM |
6826 | if (local_syms == NULL) |
6827 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
6828 | if (sym_sec == NULL) | |
6829 | sym_sec = sec; | |
c57da1a7 | 6830 | |
19e08130 AM |
6831 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
6832 | pp = (struct ppc_dyn_relocs **) vpp; | |
6833 | ||
6834 | if (*pp == NULL && info->gc_sections) | |
6835 | return TRUE; | |
6836 | ||
6837 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
6838 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 6839 | { |
19e08130 AM |
6840 | if (p->sec == sec && p->ifunc == is_ifunc) |
6841 | { | |
6842 | p->count -= 1; | |
6843 | if (p->count == 0) | |
6844 | *pp = p->next; | |
6845 | return TRUE; | |
6846 | } | |
6847 | pp = &p->next; | |
8c1d1bb8 | 6848 | } |
8c1d1bb8 AM |
6849 | } |
6850 | ||
695344c0 | 6851 | /* xgettext:c-format */ |
cf97bcb0 AM |
6852 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
6853 | sec->owner, sec); | |
8c1d1bb8 AM |
6854 | bfd_set_error (bfd_error_bad_value); |
6855 | return FALSE; | |
6856 | } | |
6857 | ||
754021d0 AM |
6858 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6859 | only remove those associated with functions in discarded link-once | |
6860 | sections, or weakly defined functions that have been overridden. It | |
6861 | would be possible to remove many more entries for statically linked | |
6862 | applications. */ | |
6863 | ||
b34976b6 | 6864 | bfd_boolean |
e7d1c40c | 6865 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
6866 | { |
6867 | bfd *ibfd; | |
754021d0 | 6868 | bfd_boolean some_edited = FALSE; |
3f764659 | 6869 | asection *need_pad = NULL; |
e7d1c40c AM |
6870 | struct ppc_link_hash_table *htab; |
6871 | ||
6872 | htab = ppc_hash_table (info); | |
6873 | if (htab == NULL) | |
6874 | return FALSE; | |
1e2f5b6e | 6875 | |
c72f2fb2 | 6876 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
6877 | { |
6878 | asection *sec; | |
6879 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6880 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6881 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 6882 | struct _opd_sec_data *opd; |
51aecdc5 | 6883 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 6884 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 6885 | |
854b41e7 AM |
6886 | if (!is_ppc64_elf (ibfd)) |
6887 | continue; | |
6888 | ||
1e2f5b6e | 6889 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 6890 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6891 | continue; |
6892 | ||
dbaa2011 | 6893 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
6894 | continue; |
6895 | ||
1e2f5b6e AM |
6896 | if (sec->output_section == bfd_abs_section_ptr) |
6897 | continue; | |
6898 | ||
6899 | /* Look through the section relocs. */ | |
6900 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6901 | continue; | |
6902 | ||
6cdc0ccc | 6903 | local_syms = NULL; |
0ffa91dd | 6904 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6905 | |
6906 | /* Read the relocations. */ | |
4ce794b7 | 6907 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6908 | info->keep_memory); |
1e2f5b6e | 6909 | if (relstart == NULL) |
b34976b6 | 6910 | return FALSE; |
1e2f5b6e AM |
6911 | |
6912 | /* First run through the relocs to check they are sane, and to | |
6913 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6914 | need_edit = FALSE; |
51aecdc5 | 6915 | broken = FALSE; |
3f764659 | 6916 | need_pad = sec; |
1e2f5b6e | 6917 | relend = relstart + sec->reloc_count; |
50bc7936 | 6918 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6919 | { |
04c9666a | 6920 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6921 | unsigned long r_symndx; |
6922 | asection *sym_sec; | |
6923 | struct elf_link_hash_entry *h; | |
6924 | Elf_Internal_Sym *sym; | |
51aecdc5 | 6925 | bfd_vma offset; |
1e2f5b6e | 6926 | |
51aecdc5 | 6927 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6928 | only interested in the reloc pointing to a function entry |
6929 | point. */ | |
51aecdc5 AM |
6930 | offset = rel->r_offset; |
6931 | if (rel + 1 == relend | |
6932 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
6933 | { |
6934 | /* If someone messes with .opd alignment then after a | |
6935 | "ld -r" we might have padding in the middle of .opd. | |
6936 | Also, there's nothing to prevent someone putting | |
6937 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6938 | optimization for them! */ |
3f764659 | 6939 | broken_opd: |
4eca0228 | 6940 | _bfd_error_handler |
871b3ab2 | 6941 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 6942 | broken = TRUE; |
1e2f5b6e AM |
6943 | break; |
6944 | } | |
6945 | ||
50bc7936 AM |
6946 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6947 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6948 | { | |
4eca0228 | 6949 | _bfd_error_handler |
695344c0 | 6950 | /* xgettext:c-format */ |
871b3ab2 | 6951 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 6952 | ibfd, r_type); |
51aecdc5 | 6953 | broken = TRUE; |
50bc7936 AM |
6954 | break; |
6955 | } | |
6956 | ||
1e2f5b6e | 6957 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6958 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6959 | r_symndx, ibfd)) | |
50bc7936 | 6960 | goto error_ret; |
1e2f5b6e AM |
6961 | |
6962 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6963 | { | |
411e1bfb AM |
6964 | const char *sym_name; |
6965 | if (h != NULL) | |
6966 | sym_name = h->root.root.string; | |
6967 | else | |
26c61ae5 L |
6968 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6969 | sym_sec); | |
411e1bfb | 6970 | |
4eca0228 | 6971 | _bfd_error_handler |
695344c0 | 6972 | /* xgettext:c-format */ |
871b3ab2 | 6973 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 6974 | ibfd, sym_name); |
51aecdc5 | 6975 | broken = TRUE; |
1e2f5b6e AM |
6976 | break; |
6977 | } | |
6978 | ||
51020317 AM |
6979 | /* opd entries are always for functions defined in the |
6980 | current input bfd. If the symbol isn't defined in the | |
6981 | input bfd, then we won't be using the function in this | |
6982 | bfd; It must be defined in a linkonce section in another | |
6983 | bfd, or is weak. It's also possible that we are | |
6984 | discarding the function due to a linker script /DISCARD/, | |
6985 | which we test for via the output_section. */ | |
6986 | if (sym_sec->owner != ibfd | |
6987 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6988 | need_edit = TRUE; |
1e2f5b6e | 6989 | |
50bc7936 | 6990 | rel += 2; |
51aecdc5 AM |
6991 | if (rel + 1 == relend |
6992 | || (rel + 2 < relend | |
6993 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
6994 | ++rel; | |
6995 | ||
6996 | if (rel == relend) | |
3f764659 JJ |
6997 | { |
6998 | if (sec->size == offset + 24) | |
6999 | { | |
7000 | need_pad = NULL; | |
7001 | break; | |
7002 | } | |
51aecdc5 | 7003 | if (sec->size == offset + 16) |
3f764659 JJ |
7004 | { |
7005 | cnt_16b++; | |
7006 | break; | |
7007 | } | |
7008 | goto broken_opd; | |
7009 | } | |
3f764659 JJ |
7010 | else if (rel + 1 < relend |
7011 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7012 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7013 | { | |
51aecdc5 AM |
7014 | if (rel[0].r_offset == offset + 16) |
7015 | cnt_16b++; | |
7016 | else if (rel[0].r_offset != offset + 24) | |
7017 | goto broken_opd; | |
3f764659 JJ |
7018 | } |
7019 | else | |
7020 | goto broken_opd; | |
1e2f5b6e AM |
7021 | } |
7022 | ||
e7d1c40c | 7023 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7024 | |
51aecdc5 | 7025 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7026 | { |
7027 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7028 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7029 | bfd_byte *rptr, *wptr; |
983bddc8 | 7030 | bfd_byte *new_contents; |
74f0fb50 AM |
7031 | bfd_size_type amt; |
7032 | ||
983bddc8 | 7033 | new_contents = NULL; |
51aecdc5 | 7034 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7035 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7036 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7037 | if (opd->adjust == NULL) |
7038 | return FALSE; | |
1e2f5b6e AM |
7039 | |
7040 | /* This seems a waste of time as input .opd sections are all | |
7041 | zeros as generated by gcc, but I suppose there's no reason | |
7042 | this will always be so. We might start putting something in | |
7043 | the third word of .opd entries. */ | |
7044 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7045 | { | |
eea6121a AM |
7046 | bfd_byte *loc; |
7047 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7048 | { |
eea6121a AM |
7049 | if (loc != NULL) |
7050 | free (loc); | |
50bc7936 | 7051 | error_ret: |
6cdc0ccc AM |
7052 | if (local_syms != NULL |
7053 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7054 | free (local_syms); | |
6cdc0ccc AM |
7055 | if (elf_section_data (sec)->relocs != relstart) |
7056 | free (relstart); | |
b34976b6 | 7057 | return FALSE; |
6cdc0ccc | 7058 | } |
1e2f5b6e AM |
7059 | sec->contents = loc; |
7060 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7061 | } | |
7062 | ||
7063 | elf_section_data (sec)->relocs = relstart; | |
7064 | ||
3f764659 | 7065 | new_contents = sec->contents; |
3f764659 JJ |
7066 | if (add_aux_fields) |
7067 | { | |
7068 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7069 | if (new_contents == NULL) | |
7070 | return FALSE; | |
51aecdc5 | 7071 | need_pad = NULL; |
3f764659 | 7072 | } |
b4f4e59f AM |
7073 | wptr = new_contents; |
7074 | rptr = sec->contents; | |
1e2f5b6e | 7075 | write_rel = relstart; |
51aecdc5 | 7076 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7077 | { |
50bc7936 AM |
7078 | unsigned long r_symndx; |
7079 | asection *sym_sec; | |
7080 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7081 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7082 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7083 | long opd_ent_size; |
7084 | Elf_Internal_Rela *next_rel; | |
7085 | bfd_boolean skip; | |
50bc7936 AM |
7086 | |
7087 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7088 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7089 | r_symndx, ibfd)) |
50bc7936 AM |
7090 | goto error_ret; |
7091 | ||
51aecdc5 AM |
7092 | next_rel = rel + 2; |
7093 | if (next_rel + 1 == relend | |
7094 | || (next_rel + 2 < relend | |
7095 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7096 | ++next_rel; | |
7097 | ||
7098 | /* See if the .opd entry is full 24 byte or | |
7099 | 16 byte (with fd_aux entry overlapped with next | |
7100 | fd_func). */ | |
7101 | opd_ent_size = 24; | |
7102 | if (next_rel == relend) | |
1e2f5b6e | 7103 | { |
51aecdc5 | 7104 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7105 | opd_ent_size = 16; |
51aecdc5 AM |
7106 | } |
7107 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7108 | opd_ent_size = 16; | |
3f764659 | 7109 | |
51aecdc5 AM |
7110 | if (h != NULL |
7111 | && h->root.root.string[0] == '.') | |
7112 | { | |
8c5b4e52 AM |
7113 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
7114 | if (fdh != NULL) | |
7115 | { | |
7116 | fdh = ppc_follow_link (fdh); | |
7117 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7118 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7119 | fdh = NULL; | |
7120 | } | |
51aecdc5 | 7121 | } |
1e2f5b6e | 7122 | |
51aecdc5 AM |
7123 | skip = (sym_sec->owner != ibfd |
7124 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7125 | if (skip) | |
7126 | { | |
7127 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7128 | { |
51aecdc5 AM |
7129 | /* Arrange for the function descriptor sym |
7130 | to be dropped. */ | |
7131 | fdh->elf.root.u.def.value = 0; | |
7132 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7133 | } |
51aecdc5 | 7134 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7135 | |
0e1862bb | 7136 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7137 | rel = next_rel; |
7138 | else | |
7139 | while (1) | |
7140 | { | |
7141 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7142 | NULL, h, sym)) | |
7143 | goto error_ret; | |
754021d0 | 7144 | |
51aecdc5 AM |
7145 | if (++rel == next_rel) |
7146 | break; | |
1e2f5b6e | 7147 | |
51aecdc5 AM |
7148 | r_symndx = ELF64_R_SYM (rel->r_info); |
7149 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7150 | r_symndx, ibfd)) | |
7151 | goto error_ret; | |
7152 | } | |
50bc7936 AM |
7153 | } |
7154 | else | |
1e2f5b6e | 7155 | { |
51aecdc5 AM |
7156 | /* We'll be keeping this opd entry. */ |
7157 | long adjust; | |
7158 | ||
7159 | if (fdh != NULL) | |
7160 | { | |
7161 | /* Redefine the function descriptor symbol to | |
7162 | this location in the opd section. It is | |
7163 | necessary to update the value here rather | |
7164 | than using an array of adjustments as we do | |
7165 | for local symbols, because various places | |
7166 | in the generic ELF code use the value | |
7167 | stored in u.def.value. */ | |
7168 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7169 | fdh->adjust_done = 1; | |
7170 | } | |
7171 | ||
7172 | /* Local syms are a bit tricky. We could | |
7173 | tweak them as they can be cached, but | |
7174 | we'd need to look through the local syms | |
7175 | for the function descriptor sym which we | |
7176 | don't have at the moment. So keep an | |
7177 | array of adjustments. */ | |
7178 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7179 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7180 | ||
7181 | if (wptr != rptr) | |
7182 | memcpy (wptr, rptr, opd_ent_size); | |
7183 | wptr += opd_ent_size; | |
7184 | if (add_aux_fields && opd_ent_size == 16) | |
7185 | { | |
7186 | memset (wptr, '\0', 8); | |
7187 | wptr += 8; | |
7188 | } | |
7189 | ||
50bc7936 | 7190 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7191 | new opd entries. */ |
7192 | for ( ; rel != next_rel; ++rel) | |
7193 | { | |
7194 | rel->r_offset += adjust; | |
7195 | if (write_rel != rel) | |
7196 | memcpy (write_rel, rel, sizeof (*rel)); | |
7197 | ++write_rel; | |
7198 | } | |
1e2f5b6e | 7199 | } |
51aecdc5 AM |
7200 | |
7201 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7202 | } |
7203 | ||
3f764659 | 7204 | sec->size = wptr - new_contents; |
1e2f5b6e | 7205 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7206 | if (add_aux_fields) |
7207 | { | |
7208 | free (sec->contents); | |
7209 | sec->contents = new_contents; | |
7210 | } | |
7211 | ||
05bf9422 | 7212 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7213 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7214 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7215 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7216 | some_edited = TRUE; |
1e2f5b6e | 7217 | } |
6cdc0ccc | 7218 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7219 | free (relstart); |
6cdc0ccc | 7220 | |
411e1bfb AM |
7221 | if (local_syms != NULL |
7222 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7223 | { | |
7224 | if (!info->keep_memory) | |
7225 | free (local_syms); | |
7226 | else | |
7227 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7228 | } | |
7229 | } | |
7230 | ||
754021d0 AM |
7231 | if (some_edited) |
7232 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7233 | ||
3f764659 JJ |
7234 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7235 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7236 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7237 | { |
7238 | bfd_byte *p; | |
7239 | ||
7240 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7241 | { | |
7242 | BFD_ASSERT (need_pad->size > 0); | |
7243 | ||
7244 | p = bfd_malloc (need_pad->size + 8); | |
7245 | if (p == NULL) | |
7246 | return FALSE; | |
699733f6 | 7247 | |
2cdcc330 AM |
7248 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7249 | p, 0, need_pad->size)) | |
3f764659 JJ |
7250 | return FALSE; |
7251 | ||
7252 | need_pad->contents = p; | |
7253 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7254 | } | |
7255 | else | |
7256 | { | |
7257 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7258 | if (p == NULL) | |
7259 | return FALSE; | |
7260 | ||
7261 | need_pad->contents = p; | |
7262 | } | |
7263 | ||
7264 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7265 | need_pad->size += 8; | |
7266 | } | |
7267 | ||
411e1bfb AM |
7268 | return TRUE; |
7269 | } | |
7270 | ||
3e04d765 AM |
7271 | /* Analyze inline PLT call relocations to see whether calls to locally |
7272 | defined functions can be converted to direct calls. */ | |
7273 | ||
7274 | bfd_boolean | |
7275 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7276 | { | |
7277 | struct ppc_link_hash_table *htab; | |
7278 | bfd *ibfd; | |
7279 | asection *sec; | |
7280 | bfd_vma low_vma, high_vma, limit; | |
7281 | ||
7282 | htab = ppc_hash_table (info); | |
7283 | if (htab == NULL) | |
7284 | return FALSE; | |
7285 | ||
7286 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7287 | reduced somewhat to cater for possible stubs that might be added | |
7288 | between the call and its destination. */ | |
7289 | if (htab->params->group_size < 0) | |
7290 | { | |
7291 | limit = -htab->params->group_size; | |
7292 | if (limit == 1) | |
7293 | limit = 0x1e00000; | |
7294 | } | |
7295 | else | |
7296 | { | |
7297 | limit = htab->params->group_size; | |
7298 | if (limit == 1) | |
7299 | limit = 0x1c00000; | |
7300 | } | |
7301 | ||
7302 | low_vma = -1; | |
7303 | high_vma = 0; | |
7304 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7305 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7306 | { | |
7307 | if (low_vma > sec->vma) | |
7308 | low_vma = sec->vma; | |
7309 | if (high_vma < sec->vma + sec->size) | |
7310 | high_vma = sec->vma + sec->size; | |
7311 | } | |
7312 | ||
7313 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7314 | convert all inline PLT sequences to direct calls when the symbol | |
7315 | is local. */ | |
7316 | if (high_vma - low_vma < limit) | |
7317 | { | |
7318 | htab->can_convert_all_inline_plt = 1; | |
7319 | return TRUE; | |
7320 | } | |
7321 | ||
7322 | /* Otherwise, go looking through relocs for cases where a direct | |
7323 | call won't reach. Mark the symbol on any such reloc to disable | |
7324 | the optimization and keep the PLT entry as it seems likely that | |
7325 | this will be better than creating trampolines. Note that this | |
7326 | will disable the optimization for all inline PLT calls to a | |
7327 | particular symbol, not just those that won't reach. The | |
7328 | difficulty in doing a more precise optimization is that the | |
7329 | linker needs to make a decision depending on whether a | |
7330 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7331 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7332 | the sequence, and there is nothing that ties those relocs | |
7333 | together except their symbol. */ | |
7334 | ||
7335 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7336 | { | |
7337 | Elf_Internal_Shdr *symtab_hdr; | |
7338 | Elf_Internal_Sym *local_syms; | |
7339 | ||
7340 | if (!is_ppc64_elf (ibfd)) | |
7341 | continue; | |
7342 | ||
7343 | local_syms = NULL; | |
7344 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7345 | ||
7346 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7347 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7348 | && !bfd_is_abs_section (sec->output_section)) | |
7349 | { | |
7350 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7351 | ||
7352 | /* Read the relocations. */ | |
7353 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7354 | info->keep_memory); | |
7355 | if (relstart == NULL) | |
7356 | return FALSE; | |
7357 | ||
7358 | relend = relstart + sec->reloc_count; | |
7359 | for (rel = relstart; rel < relend; ) | |
7360 | { | |
7361 | enum elf_ppc64_reloc_type r_type; | |
7362 | unsigned long r_symndx; | |
7363 | asection *sym_sec; | |
7364 | struct elf_link_hash_entry *h; | |
7365 | Elf_Internal_Sym *sym; | |
7366 | unsigned char *tls_maskp; | |
7367 | ||
7368 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7369 | if (r_type != R_PPC64_PLTCALL |
7370 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7371 | continue; |
7372 | ||
7373 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7374 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7375 | r_symndx, ibfd)) | |
7376 | { | |
7377 | if (elf_section_data (sec)->relocs != relstart) | |
7378 | free (relstart); | |
7379 | if (local_syms != NULL | |
2cdcc330 | 7380 | && symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7381 | free (local_syms); |
7382 | return FALSE; | |
7383 | } | |
7384 | ||
7385 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7386 | { | |
7387 | bfd_vma from, to; | |
7388 | if (h != NULL) | |
7389 | to = h->root.u.def.value; | |
7390 | else | |
7391 | to = sym->st_value; | |
7392 | to += (rel->r_addend | |
7393 | + sym_sec->output_offset | |
7394 | + sym_sec->output_section->vma); | |
7395 | from = (rel->r_offset | |
7396 | + sec->output_offset | |
7397 | + sec->output_section->vma); | |
5663e321 AM |
7398 | if (to - from + limit < 2 * limit |
7399 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7400 | && (((h ? h->other : sym->st_other) | |
7401 | & STO_PPC64_LOCAL_MASK) | |
7402 | != 1 << STO_PPC64_LOCAL_BIT))) | |
3e04d765 AM |
7403 | *tls_maskp &= ~PLT_KEEP; |
7404 | } | |
7405 | } | |
7406 | if (elf_section_data (sec)->relocs != relstart) | |
7407 | free (relstart); | |
7408 | } | |
7409 | ||
7410 | if (local_syms != NULL | |
7411 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7412 | { | |
7413 | if (!info->keep_memory) | |
7414 | free (local_syms); | |
7415 | else | |
7416 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7417 | } | |
7418 | } | |
7419 | ||
7420 | return TRUE; | |
7421 | } | |
7422 | ||
e1918d23 | 7423 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7424 | |
e1918d23 | 7425 | asection * |
e7d1c40c | 7426 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7427 | { |
411e1bfb AM |
7428 | struct ppc_link_hash_table *htab; |
7429 | ||
411e1bfb | 7430 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7431 | if (htab == NULL) |
7432 | return NULL; | |
7433 | ||
ee67d69a AM |
7434 | if (abiversion (info->output_bfd) == 1) |
7435 | htab->opd_abi = 1; | |
7436 | ||
e7d1c40c | 7437 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7438 | htab->do_multi_toc = 0; |
7439 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7440 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7441 | |
8b5f1ed8 AM |
7442 | /* Default to --no-plt-localentry, as this option can cause problems |
7443 | with symbol interposition. For example, glibc libpthread.so and | |
7444 | libc.so duplicate many pthread symbols, with a fallback | |
7445 | implementation in libc.so. In some cases the fallback does more | |
7446 | work than the pthread implementation. __pthread_condattr_destroy | |
7447 | is one such symbol: the libpthread.so implementation is | |
7448 | localentry:0 while the libc.so implementation is localentry:8. | |
7449 | An app that "cleverly" uses dlopen to only load necessary | |
7450 | libraries at runtime may omit loading libpthread.so when not | |
7451 | running multi-threaded, which then results in the libc.so | |
7452 | fallback symbols being used and ld.so complaining. Now there | |
7453 | are workarounds in ld (see non_zero_localentry) to detect the | |
7454 | pthread situation, but that may not be the only case where | |
7455 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7456 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7457 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
7458 | if (htab->params->plt_localentry0 |
7459 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7460 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7461 | _bfd_error_handler |
7462 | (_("warning: --plt-localentry is especially dangerous without " | |
7463 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7464 | |
3a71aa26 AM |
7465 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7466 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7467 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7468 | /* Move dynamic linking info to the function descriptor sym. */ |
7469 | if (htab->tls_get_addr != NULL) | |
7470 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7471 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7472 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7473 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 7474 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
7475 | { |
7476 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7477 | ||
7478 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7479 | FALSE, FALSE, TRUE); | |
7480 | if (opt != NULL) | |
7481 | func_desc_adjust (opt, info); | |
7482 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7483 | FALSE, FALSE, TRUE); | |
7484 | if (opt_fd != NULL | |
7485 | && (opt_fd->root.type == bfd_link_hash_defined | |
7486 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7487 | { | |
7488 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7489 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7490 | be calling __tls_get_addr via a plt call stub, then | |
7491 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7492 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7493 | if (htab->elf.dynamic_sections_created | |
7494 | && tga_fd != NULL | |
7495 | && (tga_fd->type == STT_FUNC | |
7496 | || tga_fd->needs_plt) | |
7497 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 7498 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
7499 | { |
7500 | struct plt_entry *ent; | |
7501 | ||
7502 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7503 | if (ent->plt.refcount > 0) | |
7504 | break; | |
7505 | if (ent != NULL) | |
7506 | { | |
7507 | tga_fd->root.type = bfd_link_hash_indirect; | |
7508 | tga_fd->root.u.i.link = &opt_fd->root; | |
7509 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 7510 | opt_fd->mark = 1; |
a7f2871e AM |
7511 | if (opt_fd->dynindx != -1) |
7512 | { | |
7513 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7514 | opt_fd->dynindx = -1; | |
7515 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7516 | opt_fd->dynstr_index); | |
7517 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7518 | return NULL; |
a7f2871e | 7519 | } |
2cdcc330 AM |
7520 | htab->tls_get_addr_fd |
7521 | = (struct ppc_link_hash_entry *) opt_fd; | |
a7f2871e AM |
7522 | tga = &htab->tls_get_addr->elf; |
7523 | if (opt != NULL && tga != NULL) | |
7524 | { | |
7525 | tga->root.type = bfd_link_hash_indirect; | |
7526 | tga->root.u.i.link = &opt->root; | |
7527 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 7528 | opt->mark = 1; |
a7f2871e AM |
7529 | _bfd_elf_link_hash_hide_symbol (info, opt, |
7530 | tga->forced_local); | |
7531 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7532 | } | |
7533 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7534 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7535 | if (htab->tls_get_addr != NULL) | |
7536 | { | |
7537 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7538 | htab->tls_get_addr->is_func = 1; | |
7539 | } | |
7540 | } | |
7541 | } | |
7542 | } | |
7c9cf415 AM |
7543 | else if (htab->params->tls_get_addr_opt < 0) |
7544 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7545 | } |
33c0ec9d | 7546 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7547 | } |
8387904d | 7548 | |
3a71aa26 AM |
7549 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7550 | HASH1 or HASH2. */ | |
8387904d | 7551 | |
3a71aa26 AM |
7552 | static bfd_boolean |
7553 | branch_reloc_hash_match (const bfd *ibfd, | |
7554 | const Elf_Internal_Rela *rel, | |
7555 | const struct ppc_link_hash_entry *hash1, | |
7556 | const struct ppc_link_hash_entry *hash2) | |
7557 | { | |
7558 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7559 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7560 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7561 | ||
e054468f | 7562 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7563 | { |
3a71aa26 AM |
7564 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7565 | struct elf_link_hash_entry *h; | |
8387904d | 7566 | |
3a71aa26 | 7567 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7568 | h = elf_follow_link (h); |
3a71aa26 AM |
7569 | if (h == &hash1->elf || h == &hash2->elf) |
7570 | return TRUE; | |
a48ebf4d | 7571 | } |
3a71aa26 | 7572 | return FALSE; |
951fd09b | 7573 | } |
411e1bfb | 7574 | |
951fd09b AM |
7575 | /* Run through all the TLS relocs looking for optimization |
7576 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7577 | a preliminary section layout so that we know the TLS segment | |
7578 | offsets. We can't optimize earlier because some optimizations need | |
7579 | to know the tp offset, and we need to optimize before allocating | |
7580 | dynamic relocations. */ | |
7581 | ||
7582 | bfd_boolean | |
33c0ec9d | 7583 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7584 | { |
7585 | bfd *ibfd; | |
7586 | asection *sec; | |
7587 | struct ppc_link_hash_table *htab; | |
663a1470 | 7588 | unsigned char *toc_ref; |
102890f0 | 7589 | int pass; |
951fd09b | 7590 | |
3cbc1e5e | 7591 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7592 | return TRUE; |
7593 | ||
951fd09b | 7594 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7595 | if (htab == NULL) |
7596 | return FALSE; | |
7597 | ||
663a1470 AM |
7598 | /* Make two passes over the relocs. On the first pass, mark toc |
7599 | entries involved with tls relocs, and check that tls relocs | |
7600 | involved in setting up a tls_get_addr call are indeed followed by | |
7601 | such a call. If they are not, we can't do any tls optimization. | |
7602 | On the second pass twiddle tls_mask flags to notify | |
7603 | relocate_section that optimization can be done, and adjust got | |
7604 | and plt refcounts. */ | |
7605 | toc_ref = NULL; | |
7606 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7607 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7608 | { |
7609 | Elf_Internal_Sym *locsyms = NULL; | |
7610 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7611 | ||
102890f0 AM |
7612 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7613 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7614 | { | |
7615 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7616 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7617 | |
102890f0 AM |
7618 | /* Read the relocations. */ |
7619 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7620 | info->keep_memory); | |
7621 | if (relstart == NULL) | |
2915c55b JK |
7622 | { |
7623 | free (toc_ref); | |
7624 | return FALSE; | |
7625 | } | |
411e1bfb | 7626 | |
102890f0 AM |
7627 | relend = relstart + sec->reloc_count; |
7628 | for (rel = relstart; rel < relend; rel++) | |
7629 | { | |
7630 | enum elf_ppc64_reloc_type r_type; | |
7631 | unsigned long r_symndx; | |
7632 | struct elf_link_hash_entry *h; | |
7633 | Elf_Internal_Sym *sym; | |
7634 | asection *sym_sec; | |
f961d9dd AM |
7635 | unsigned char *tls_mask; |
7636 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
7637 | bfd_vma value; |
7638 | bfd_boolean ok_tprel, is_local; | |
7639 | long toc_ref_index = 0; | |
7640 | int expecting_tls_get_addr = 0; | |
663a1470 | 7641 | bfd_boolean ret = FALSE; |
411e1bfb | 7642 | |
102890f0 AM |
7643 | r_symndx = ELF64_R_SYM (rel->r_info); |
7644 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7645 | r_symndx, ibfd)) | |
7646 | { | |
7647 | err_free_rel: | |
7648 | if (elf_section_data (sec)->relocs != relstart) | |
7649 | free (relstart); | |
7650 | if (toc_ref != NULL) | |
7651 | free (toc_ref); | |
7652 | if (locsyms != NULL | |
0ffa91dd | 7653 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7654 | != (unsigned char *) locsyms)) |
7655 | free (locsyms); | |
663a1470 | 7656 | return ret; |
102890f0 | 7657 | } |
411e1bfb | 7658 | |
102890f0 AM |
7659 | if (h != NULL) |
7660 | { | |
766bc656 AM |
7661 | if (h->root.type == bfd_link_hash_defined |
7662 | || h->root.type == bfd_link_hash_defweak) | |
7663 | value = h->root.u.def.value; | |
7664 | else if (h->root.type == bfd_link_hash_undefweak) | |
7665 | value = 0; | |
7666 | else | |
663a1470 AM |
7667 | { |
7668 | found_tls_get_addr_arg = 0; | |
7669 | continue; | |
7670 | } | |
102890f0 AM |
7671 | } |
7672 | else | |
7673 | /* Symbols referenced by TLS relocs must be of type | |
7674 | STT_TLS. So no need for .opd local sym adjust. */ | |
7675 | value = sym->st_value; | |
7676 | ||
7677 | ok_tprel = FALSE; | |
7678 | is_local = FALSE; | |
7679 | if (h == NULL | |
7680 | || !h->def_dynamic) | |
7681 | { | |
7682 | is_local = TRUE; | |
766bc656 AM |
7683 | if (h != NULL |
7684 | && h->root.type == bfd_link_hash_undefweak) | |
7685 | ok_tprel = TRUE; | |
c27b8c2a AM |
7686 | else if (sym_sec != NULL |
7687 | && sym_sec->output_section != NULL) | |
766bc656 AM |
7688 | { |
7689 | value += sym_sec->output_offset; | |
7690 | value += sym_sec->output_section->vma; | |
7691 | value -= htab->elf.tls_sec->vma; | |
7692 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7693 | < (bfd_vma) 1 << 32); | |
7694 | } | |
102890f0 | 7695 | } |
951fd09b | 7696 | |
102890f0 | 7697 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
7698 | /* If this section has old-style __tls_get_addr calls |
7699 | without marker relocs, then check that each | |
7700 | __tls_get_addr call reloc is preceded by a reloc | |
7701 | that conceivably belongs to the __tls_get_addr arg | |
7702 | setup insn. If we don't find matching arg setup | |
7703 | relocs, don't do any tls optimization. */ | |
7704 | if (pass == 0 | |
7705 | && sec->has_tls_get_addr_call | |
7706 | && h != NULL | |
7707 | && (h == &htab->tls_get_addr->elf | |
7708 | || h == &htab->tls_get_addr_fd->elf) | |
7709 | && !found_tls_get_addr_arg | |
7710 | && is_branch_reloc (r_type)) | |
7711 | { | |
25f53a85 | 7712 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
7713 | "TLS optimization disabled\n"), |
7714 | ibfd, sec, rel->r_offset); | |
7715 | ret = TRUE; | |
7716 | goto err_free_rel; | |
7717 | } | |
7718 | ||
7719 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
7720 | switch (r_type) |
7721 | { | |
7722 | case R_PPC64_GOT_TLSLD16: | |
7723 | case R_PPC64_GOT_TLSLD16_LO: | |
7724 | expecting_tls_get_addr = 1; | |
663a1470 | 7725 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7726 | /* Fall through. */ |
102890f0 AM |
7727 | |
7728 | case R_PPC64_GOT_TLSLD16_HI: | |
7729 | case R_PPC64_GOT_TLSLD16_HA: | |
7730 | /* These relocs should never be against a symbol | |
7731 | defined in a shared lib. Leave them alone if | |
7732 | that turns out to be the case. */ | |
7733 | if (!is_local) | |
7734 | continue; | |
411e1bfb | 7735 | |
102890f0 | 7736 | /* LD -> LE */ |
411e1bfb | 7737 | tls_set = 0; |
102890f0 AM |
7738 | tls_clear = TLS_LD; |
7739 | tls_type = TLS_TLS | TLS_LD; | |
7740 | break; | |
411e1bfb | 7741 | |
102890f0 AM |
7742 | case R_PPC64_GOT_TLSGD16: |
7743 | case R_PPC64_GOT_TLSGD16_LO: | |
7744 | expecting_tls_get_addr = 1; | |
663a1470 | 7745 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7746 | /* Fall through. */ |
102890f0 AM |
7747 | |
7748 | case R_PPC64_GOT_TLSGD16_HI: | |
7749 | case R_PPC64_GOT_TLSGD16_HA: | |
7750 | if (ok_tprel) | |
7751 | /* GD -> LE */ | |
411e1bfb | 7752 | tls_set = 0; |
102890f0 AM |
7753 | else |
7754 | /* GD -> IE */ | |
7755 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7756 | tls_clear = TLS_GD; | |
7757 | tls_type = TLS_TLS | TLS_GD; | |
7758 | break; | |
7759 | ||
7760 | case R_PPC64_GOT_TPREL16_DS: | |
7761 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7762 | case R_PPC64_GOT_TPREL16_HI: | |
7763 | case R_PPC64_GOT_TPREL16_HA: | |
7764 | if (ok_tprel) | |
7765 | { | |
7766 | /* IE -> LE */ | |
7767 | tls_set = 0; | |
7768 | tls_clear = TLS_TPREL; | |
7769 | tls_type = TLS_TLS | TLS_TPREL; | |
7770 | break; | |
7771 | } | |
411e1bfb AM |
7772 | continue; |
7773 | ||
727fc41e AM |
7774 | case R_PPC64_TLSGD: |
7775 | case R_PPC64_TLSLD: | |
23cedd1d AM |
7776 | if (rel + 1 < relend |
7777 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
7778 | { | |
7779 | if (pass != 0 | |
2cdcc330 | 7780 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
7781 | != R_PPC64_PLTSEQ) |
7782 | && (ELF64_R_TYPE (rel[1].r_info) | |
7783 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
7784 | { |
7785 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
7786 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 7787 | r_symndx, ibfd)) |
23cedd1d AM |
7788 | goto err_free_rel; |
7789 | if (h != NULL) | |
7790 | { | |
7791 | struct plt_entry *ent = NULL; | |
7792 | ||
7793 | for (ent = h->plt.plist; | |
7794 | ent != NULL; | |
7795 | ent = ent->next) | |
7796 | if (ent->addend == rel[1].r_addend) | |
7797 | break; | |
7798 | ||
7799 | if (ent != NULL | |
7800 | && ent->plt.refcount > 0) | |
7801 | ent->plt.refcount -= 1; | |
7802 | } | |
7803 | } | |
7804 | continue; | |
7805 | } | |
663a1470 | 7806 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7807 | /* Fall through. */ |
663a1470 AM |
7808 | |
7809 | case R_PPC64_TLS: | |
7810 | case R_PPC64_TOC16: | |
7811 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
7812 | if (sym_sec == NULL || sym_sec != toc) |
7813 | continue; | |
7814 | ||
7815 | /* Mark this toc entry as referenced by a TLS | |
7816 | code sequence. We can do that now in the | |
7817 | case of R_PPC64_TLS, and after checking for | |
7818 | tls_get_addr for the TOC16 relocs. */ | |
7819 | if (toc_ref == NULL) | |
2cdcc330 AM |
7820 | toc_ref |
7821 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
7822 | if (toc_ref == NULL) |
7823 | goto err_free_rel; | |
7824 | ||
102890f0 AM |
7825 | if (h != NULL) |
7826 | value = h->root.u.def.value; | |
7827 | else | |
7828 | value = sym->st_value; | |
7829 | value += rel->r_addend; | |
73242275 AM |
7830 | if (value % 8 != 0) |
7831 | continue; | |
7832 | BFD_ASSERT (value < toc->size | |
7833 | && toc->output_offset % 8 == 0); | |
663a1470 | 7834 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
7835 | if (r_type == R_PPC64_TLS |
7836 | || r_type == R_PPC64_TLSGD | |
7837 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7838 | { |
7839 | toc_ref[toc_ref_index] = 1; | |
7840 | continue; | |
7841 | } | |
7842 | ||
7843 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7844 | continue; | |
7845 | ||
7846 | tls_set = 0; | |
7847 | tls_clear = 0; | |
7848 | expecting_tls_get_addr = 2; | |
7849 | break; | |
7850 | ||
7851 | case R_PPC64_TPREL64: | |
7852 | if (pass == 0 | |
7853 | || sec != toc | |
7854 | || toc_ref == NULL | |
663a1470 | 7855 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7856 | continue; |
7857 | if (ok_tprel) | |
7858 | { | |
7859 | /* IE -> LE */ | |
7860 | tls_set = TLS_EXPLICIT; | |
7861 | tls_clear = TLS_TPREL; | |
7862 | break; | |
7863 | } | |
7864 | continue; | |
7865 | ||
7866 | case R_PPC64_DTPMOD64: | |
7867 | if (pass == 0 | |
7868 | || sec != toc | |
7869 | || toc_ref == NULL | |
663a1470 | 7870 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7871 | continue; |
7872 | if (rel + 1 < relend | |
7873 | && (rel[1].r_info | |
7874 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7875 | && rel[1].r_offset == rel->r_offset + 8) | |
7876 | { | |
7877 | if (ok_tprel) | |
7878 | /* GD -> LE */ | |
7879 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7880 | else | |
7881 | /* GD -> IE */ | |
7882 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7883 | tls_clear = TLS_GD; | |
7884 | } | |
7885 | else | |
7886 | { | |
7887 | if (!is_local) | |
7888 | continue; | |
7889 | ||
7890 | /* LD -> LE */ | |
7891 | tls_set = TLS_EXPLICIT; | |
7892 | tls_clear = TLS_LD; | |
7893 | } | |
7894 | break; | |
7895 | ||
7896 | default: | |
7897 | continue; | |
7898 | } | |
7899 | ||
7900 | if (pass == 0) | |
7901 | { | |
727fc41e AM |
7902 | if (!expecting_tls_get_addr |
7903 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7904 | continue; |
7905 | ||
3a71aa26 AM |
7906 | if (rel + 1 < relend |
7907 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7908 | htab->tls_get_addr, | |
7909 | htab->tls_get_addr_fd)) | |
102890f0 | 7910 | { |
3a71aa26 | 7911 | if (expecting_tls_get_addr == 2) |
102890f0 | 7912 | { |
3a71aa26 | 7913 | /* Check for toc tls entries. */ |
f961d9dd | 7914 | unsigned char *toc_tls; |
3a71aa26 AM |
7915 | int retval; |
7916 | ||
7917 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7918 | &locsyms, | |
7919 | rel, ibfd); | |
7920 | if (retval == 0) | |
7921 | goto err_free_rel; | |
663a1470 AM |
7922 | if (toc_tls != NULL) |
7923 | { | |
37da22e5 AM |
7924 | if ((*toc_tls & TLS_TLS) != 0 |
7925 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
7926 | found_tls_get_addr_arg = 1; |
7927 | if (retval > 1) | |
7928 | toc_ref[toc_ref_index] = 1; | |
7929 | } | |
102890f0 | 7930 | } |
3a71aa26 | 7931 | continue; |
102890f0 AM |
7932 | } |
7933 | ||
102890f0 AM |
7934 | /* Uh oh, we didn't find the expected call. We |
7935 | could just mark this symbol to exclude it | |
7936 | from tls optimization but it's safer to skip | |
663a1470 | 7937 | the entire optimization. */ |
695344c0 | 7938 | /* xgettext:c-format */ |
25f53a85 | 7939 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
7940 | "TLS optimization disabled\n"), |
7941 | ibfd, sec, rel->r_offset); | |
7942 | ret = TRUE; | |
7943 | goto err_free_rel; | |
102890f0 AM |
7944 | } |
7945 | ||
37da22e5 AM |
7946 | /* If we don't have old-style __tls_get_addr calls |
7947 | without TLSGD/TLSLD marker relocs, and we haven't | |
7948 | found a new-style __tls_get_addr call with a | |
7949 | marker for this symbol, then we either have a | |
7950 | broken object file or an -mlongcall style | |
7951 | indirect call to __tls_get_addr without a marker. | |
7952 | Disable optimization in this case. */ | |
7953 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
7954 | && (tls_set & TLS_EXPLICIT) == 0 | |
7955 | && !sec->has_tls_get_addr_call | |
7956 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
7957 | != (TLS_TLS | TLS_MARK))) | |
7958 | continue; | |
7959 | ||
23cedd1d | 7960 | if (expecting_tls_get_addr) |
102890f0 | 7961 | { |
23cedd1d AM |
7962 | struct plt_entry *ent = NULL; |
7963 | ||
7964 | if (htab->tls_get_addr != NULL) | |
7965 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7966 | ent != NULL; | |
7967 | ent = ent->next) | |
7968 | if (ent->addend == 0) | |
102890f0 | 7969 | break; |
411e1bfb | 7970 | |
23cedd1d AM |
7971 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
7972 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7973 | ent != NULL; | |
7974 | ent = ent->next) | |
7975 | if (ent->addend == 0) | |
102890f0 | 7976 | break; |
23cedd1d AM |
7977 | |
7978 | if (ent != NULL | |
7979 | && ent->plt.refcount > 0) | |
7980 | ent->plt.refcount -= 1; | |
102890f0 | 7981 | } |
411e1bfb | 7982 | |
102890f0 | 7983 | if (tls_clear == 0) |
30038c59 AM |
7984 | continue; |
7985 | ||
102890f0 AM |
7986 | if ((tls_set & TLS_EXPLICIT) == 0) |
7987 | { | |
7988 | struct got_entry *ent; | |
411e1bfb | 7989 | |
102890f0 AM |
7990 | /* Adjust got entry for this reloc. */ |
7991 | if (h != NULL) | |
7992 | ent = h->got.glist; | |
7993 | else | |
7994 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7995 | |
102890f0 AM |
7996 | for (; ent != NULL; ent = ent->next) |
7997 | if (ent->addend == rel->r_addend | |
7998 | && ent->owner == ibfd | |
7999 | && ent->tls_type == tls_type) | |
8000 | break; | |
8001 | if (ent == NULL) | |
8002 | abort (); | |
411e1bfb | 8003 | |
102890f0 AM |
8004 | if (tls_set == 0) |
8005 | { | |
8006 | /* We managed to get rid of a got entry. */ | |
8007 | if (ent->got.refcount > 0) | |
8008 | ent->got.refcount -= 1; | |
8009 | } | |
8010 | } | |
8011 | else | |
8012 | { | |
8013 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8014 | we'll lose one or two dyn relocs. */ | |
8015 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8016 | NULL, h, sym)) |
102890f0 | 8017 | return FALSE; |
411e1bfb | 8018 | |
102890f0 AM |
8019 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8020 | { | |
8021 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8022 | NULL, h, sym)) |
102890f0 AM |
8023 | return FALSE; |
8024 | } | |
8025 | } | |
411e1bfb | 8026 | |
102890f0 AM |
8027 | *tls_mask |= tls_set; |
8028 | *tls_mask &= ~tls_clear; | |
8029 | } | |
8c1d1bb8 | 8030 | |
102890f0 AM |
8031 | if (elf_section_data (sec)->relocs != relstart) |
8032 | free (relstart); | |
8033 | } | |
411e1bfb | 8034 | |
663a1470 AM |
8035 | if (locsyms != NULL |
8036 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8037 | { | |
8038 | if (!info->keep_memory) | |
8039 | free (locsyms); | |
8040 | else | |
8041 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8042 | } | |
8043 | } | |
411e1bfb | 8044 | |
663a1470 AM |
8045 | if (toc_ref != NULL) |
8046 | free (toc_ref); | |
9a23f96e | 8047 | htab->do_tls_opt = 1; |
b34976b6 | 8048 | return TRUE; |
1e2f5b6e | 8049 | } |
b34976b6 | 8050 | |
c5614fa4 AM |
8051 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8052 | the values of any global symbols in a toc section that has been | |
8053 | edited. Globals in toc sections should be a rarity, so this function | |
8054 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8055 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8056 | |
8057 | struct adjust_toc_info | |
8058 | { | |
8059 | asection *toc; | |
8060 | unsigned long *skip; | |
8061 | bfd_boolean global_toc_syms; | |
8062 | }; | |
8063 | ||
ba761f19 AM |
8064 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8065 | ||
c5614fa4 AM |
8066 | static bfd_boolean |
8067 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8068 | { | |
8069 | struct ppc_link_hash_entry *eh; | |
8070 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8071 | unsigned long i; |
c5614fa4 | 8072 | |
c5614fa4 AM |
8073 | if (h->root.type != bfd_link_hash_defined |
8074 | && h->root.type != bfd_link_hash_defweak) | |
8075 | return TRUE; | |
8076 | ||
8077 | eh = (struct ppc_link_hash_entry *) h; | |
8078 | if (eh->adjust_done) | |
8079 | return TRUE; | |
8080 | ||
8081 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8082 | { | |
854b41e7 AM |
8083 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8084 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8085 | else |
854b41e7 AM |
8086 | i = eh->elf.root.u.def.value >> 3; |
8087 | ||
ba761f19 | 8088 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8089 | { |
4eca0228 | 8090 | _bfd_error_handler |
854b41e7 AM |
8091 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8092 | do | |
8093 | ++i; | |
ba761f19 | 8094 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8095 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8096 | } |
854b41e7 AM |
8097 | |
8098 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8099 | eh->adjust_done = 1; |
8100 | } | |
8101 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8102 | toc_inf->global_toc_syms = TRUE; | |
8103 | ||
8104 | return TRUE; | |
8105 | } | |
8106 | ||
39eeab25 AM |
8107 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8108 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8109 | |
8110 | static bfd_boolean | |
39eeab25 | 8111 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8112 | { |
39eeab25 AM |
8113 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
8114 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
8115 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
8116 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8117 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8118 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8119 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8120 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8121 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8122 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8123 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8124 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8125 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8126 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8127 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
8128 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
8129 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
8130 | /* Exclude lfqu by testing reloc. If relocs are ever | |
8131 | defined for the reduced D field in psq_lu then those | |
8132 | will need testing too. */ | |
8133 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
8134 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
8135 | && (insn & 1) == 0) | |
8136 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
8137 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
8138 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
8139 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
8140 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
8141 | && (insn & 1) == 0)); | |
560c8763 AM |
8142 | } |
8143 | ||
4a421c53 AM |
8144 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8145 | pld ra,symbol@got@pcrel | |
8146 | load/store rt,0(ra) | |
8147 | or | |
8148 | paddi ra,symbol@pcrel | |
8149 | load/store rt,0(ra) | |
8150 | may be translated to | |
8151 | pload/pstore rt,symbol@pcrel | |
8152 | nop. | |
8153 | This function returns true if the optimization is possible, placing | |
8154 | the prefix insn in *PINSN1 and a NOP in *PINSN2. | |
8155 | ||
8156 | On entry to this function, the linker has already determined that | |
8157 | the pld can be replaced with paddi: *PINSN1 is that paddi insn, | |
8158 | while *PINSN2 is the second instruction. */ | |
8159 | ||
8160 | static bfd_boolean | |
8161 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2) | |
8162 | { | |
8163 | uint32_t insn2 = *pinsn2 >> 32; | |
8164 | uint64_t i1new; | |
8165 | ||
8166 | /* Check that regs match. */ | |
8167 | if (((insn2 >> 16) & 31) != ((*pinsn1 >> 21) & 31)) | |
8168 | return FALSE; | |
8169 | ||
8170 | switch ((insn2 >> 26) & 63) | |
8171 | { | |
8172 | default: | |
8173 | return FALSE; | |
8174 | ||
8175 | case 32: /* lwz */ | |
8176 | case 34: /* lbz */ | |
8177 | case 36: /* stw */ | |
8178 | case 38: /* stb */ | |
8179 | case 40: /* lhz */ | |
8180 | case 42: /* lha */ | |
8181 | case 44: /* sth */ | |
8182 | case 48: /* lfs */ | |
8183 | case 50: /* lfd */ | |
8184 | case 52: /* stfs */ | |
8185 | case 54: /* stfd */ | |
8186 | /* These are the PMLS cases, where we just need to tack a prefix | |
8187 | on the insn. Check that the D field is zero. */ | |
8188 | if ((insn2 & 0xffff) != 0) | |
8189 | return FALSE; | |
8190 | i1new = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
8191 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); | |
8192 | break; | |
8193 | ||
8194 | case 58: /* lwa, ld */ | |
8195 | if ((insn2 & 0xfffd) != 0) | |
8196 | return FALSE; | |
8197 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8198 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) | |
8199 | | (insn2 & (31ULL << 21))); | |
8200 | break; | |
8201 | ||
8202 | case 57: /* lxsd, lxssp */ | |
8203 | if ((insn2 & 0xfffc) != 0 || (insn2 & 3) < 2) | |
8204 | return FALSE; | |
8205 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8206 | | ((40ULL | (insn2 & 3)) << 26) | |
8207 | | (insn2 & (31ULL << 21))); | |
8208 | break; | |
8209 | ||
8210 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8211 | if ((insn2 & 3) == 0) | |
8212 | return FALSE; | |
8213 | else if ((insn2 & 3) >= 2) | |
8214 | { | |
8215 | if ((insn2 & 0xfffc) != 0) | |
8216 | return FALSE; | |
8217 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8218 | | ((44ULL | (insn2 & 3)) << 26) | |
8219 | | (insn2 & (31ULL << 21))); | |
8220 | } | |
8221 | else | |
8222 | { | |
8223 | if ((insn2 & 0xfff0) != 0) | |
8224 | return FALSE; | |
8225 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8226 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) | |
8227 | | (insn2 & (31ULL << 21))); | |
8228 | } | |
8229 | break; | |
8230 | ||
8231 | case 56: /* lq */ | |
8232 | if ((insn2 & 0xffff) != 0) | |
8233 | return FALSE; | |
8234 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8235 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); | |
8236 | break; | |
8237 | ||
8238 | case 62: /* std, stq */ | |
8239 | if ((insn2 & 0xfffd) != 0) | |
8240 | return FALSE; | |
8241 | i1new = ((1ULL << 58) | (1ULL << 52) | |
8242 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) | |
8243 | | (insn2 & (31ULL << 21))); | |
8244 | break; | |
8245 | } | |
8246 | ||
8247 | *pinsn1 = i1new; | |
8248 | *pinsn2 = (uint64_t) NOP << 32; | |
8249 | return TRUE; | |
8250 | } | |
8251 | ||
c5614fa4 AM |
8252 | /* Examine all relocs referencing .toc sections in order to remove |
8253 | unused .toc entries. */ | |
8254 | ||
8255 | bfd_boolean | |
33c0ec9d | 8256 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8257 | { |
8258 | bfd *ibfd; | |
8259 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8260 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8261 | |
67f0cbdb | 8262 | htab->do_toc_opt = 1; |
c5614fa4 | 8263 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8264 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8265 | { |
8266 | asection *toc, *sec; | |
8267 | Elf_Internal_Shdr *symtab_hdr; | |
8268 | Elf_Internal_Sym *local_syms; | |
425b145b | 8269 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8270 | unsigned long *skip, *drop; |
8271 | unsigned char *used; | |
8272 | unsigned char *keep, last, some_unused; | |
8273 | ||
854b41e7 AM |
8274 | if (!is_ppc64_elf (ibfd)) |
8275 | continue; | |
8276 | ||
c5614fa4 AM |
8277 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8278 | if (toc == NULL | |
92b7a70f | 8279 | || toc->size == 0 |
dbaa2011 AM |
8280 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8281 | || discarded_section (toc)) | |
c5614fa4 AM |
8282 | continue; |
8283 | ||
425b145b | 8284 | toc_relocs = NULL; |
c5614fa4 | 8285 | local_syms = NULL; |
0ffa91dd | 8286 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8287 | |
8288 | /* Look at sections dropped from the final link. */ | |
8289 | skip = NULL; | |
8290 | relstart = NULL; | |
8291 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8292 | { | |
8293 | if (sec->reloc_count == 0 | |
dbaa2011 | 8294 | || !discarded_section (sec) |
c5614fa4 AM |
8295 | || get_opd_info (sec) |
8296 | || (sec->flags & SEC_ALLOC) == 0 | |
8297 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8298 | continue; | |
8299 | ||
8300 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8301 | if (relstart == NULL) | |
8302 | goto error_ret; | |
8303 | ||
8304 | /* Run through the relocs to see which toc entries might be | |
8305 | unused. */ | |
8306 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8307 | { | |
8308 | enum elf_ppc64_reloc_type r_type; | |
8309 | unsigned long r_symndx; | |
8310 | asection *sym_sec; | |
8311 | struct elf_link_hash_entry *h; | |
8312 | Elf_Internal_Sym *sym; | |
8313 | bfd_vma val; | |
8314 | ||
8315 | r_type = ELF64_R_TYPE (rel->r_info); | |
8316 | switch (r_type) | |
8317 | { | |
8318 | default: | |
8319 | continue; | |
8320 | ||
8321 | case R_PPC64_TOC16: | |
8322 | case R_PPC64_TOC16_LO: | |
8323 | case R_PPC64_TOC16_HI: | |
8324 | case R_PPC64_TOC16_HA: | |
8325 | case R_PPC64_TOC16_DS: | |
8326 | case R_PPC64_TOC16_LO_DS: | |
8327 | break; | |
8328 | } | |
8329 | ||
8330 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8331 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8332 | r_symndx, ibfd)) | |
8333 | goto error_ret; | |
8334 | ||
8335 | if (sym_sec != toc) | |
8336 | continue; | |
8337 | ||
8338 | if (h != NULL) | |
8339 | val = h->root.u.def.value; | |
8340 | else | |
8341 | val = sym->st_value; | |
8342 | val += rel->r_addend; | |
8343 | ||
8344 | if (val >= toc->size) | |
8345 | continue; | |
8346 | ||
8347 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8348 | If not, don't mark as unused. */ | |
8349 | if (val & 7) | |
8350 | continue; | |
8351 | ||
8352 | if (skip == NULL) | |
8353 | { | |
854b41e7 | 8354 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8355 | if (skip == NULL) |
8356 | goto error_ret; | |
8357 | } | |
8358 | ||
ba761f19 | 8359 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8360 | } |
8361 | ||
8362 | if (elf_section_data (sec)->relocs != relstart) | |
8363 | free (relstart); | |
8364 | } | |
8365 | ||
ba761f19 AM |
8366 | /* For largetoc loads of address constants, we can convert |
8367 | . addis rx,2,addr@got@ha | |
8368 | . ld ry,addr@got@l(rx) | |
8369 | to | |
8370 | . addis rx,2,addr@toc@ha | |
8371 | . addi ry,rx,addr@toc@l | |
8372 | when addr is within 2G of the toc pointer. This then means | |
8373 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8374 | |
ba761f19 AM |
8375 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8376 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8377 | && toc->reloc_count != 0) | |
8378 | { | |
8379 | /* Read toc relocs. */ | |
425b145b AM |
8380 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8381 | info->keep_memory); | |
8382 | if (toc_relocs == NULL) | |
ba761f19 AM |
8383 | goto error_ret; |
8384 | ||
425b145b | 8385 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8386 | { |
8387 | enum elf_ppc64_reloc_type r_type; | |
8388 | unsigned long r_symndx; | |
8389 | asection *sym_sec; | |
8390 | struct elf_link_hash_entry *h; | |
8391 | Elf_Internal_Sym *sym; | |
8392 | bfd_vma val, addr; | |
8393 | ||
8394 | r_type = ELF64_R_TYPE (rel->r_info); | |
8395 | if (r_type != R_PPC64_ADDR64) | |
8396 | continue; | |
8397 | ||
8398 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8399 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8400 | r_symndx, ibfd)) | |
8401 | goto error_ret; | |
8402 | ||
425b145b | 8403 | if (sym_sec == NULL |
c27b8c2a | 8404 | || sym_sec->output_section == NULL |
dbaa2011 | 8405 | || discarded_section (sym_sec)) |
425b145b AM |
8406 | continue; |
8407 | ||
afe397ea | 8408 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8409 | continue; |
8410 | ||
8411 | if (h != NULL) | |
bddc25c9 AM |
8412 | { |
8413 | if (h->type == STT_GNU_IFUNC) | |
8414 | continue; | |
8415 | val = h->root.u.def.value; | |
8416 | } | |
ba761f19 | 8417 | else |
bddc25c9 AM |
8418 | { |
8419 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8420 | continue; | |
8421 | val = sym->st_value; | |
8422 | } | |
ba761f19 AM |
8423 | val += rel->r_addend; |
8424 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8425 | ||
8426 | /* We don't yet know the exact toc pointer value, but we | |
8427 | know it will be somewhere in the toc section. Don't | |
8428 | optimize if the difference from any possible toc | |
8429 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8430 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8431 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8432 | continue; | |
8433 | ||
8434 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8435 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8436 | continue; | |
8437 | ||
8438 | if (skip == NULL) | |
8439 | { | |
8440 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8441 | if (skip == NULL) | |
8442 | goto error_ret; | |
8443 | } | |
8444 | ||
8445 | skip[rel->r_offset >> 3] | |
425b145b | 8446 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8447 | } |
ba761f19 AM |
8448 | } |
8449 | ||
c5614fa4 AM |
8450 | if (skip == NULL) |
8451 | continue; | |
8452 | ||
8453 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8454 | if (used == NULL) | |
8455 | { | |
8456 | error_ret: | |
8457 | if (local_syms != NULL | |
8458 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8459 | free (local_syms); | |
8460 | if (sec != NULL | |
8461 | && relstart != NULL | |
8462 | && elf_section_data (sec)->relocs != relstart) | |
8463 | free (relstart); | |
425b145b AM |
8464 | if (toc_relocs != NULL |
8465 | && elf_section_data (toc)->relocs != toc_relocs) | |
8466 | free (toc_relocs); | |
c5614fa4 AM |
8467 | if (skip != NULL) |
8468 | free (skip); | |
8469 | return FALSE; | |
8470 | } | |
8471 | ||
30038c59 AM |
8472 | /* Now check all kept sections that might reference the toc. |
8473 | Check the toc itself last. */ | |
8474 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8475 | : ibfd->sections); | |
c5614fa4 | 8476 | sec != NULL; |
c5614fa4 | 8477 | sec = (sec == toc ? NULL |
c5614fa4 | 8478 | : sec->next == NULL ? toc |
30038c59 | 8479 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8480 | : sec->next)) |
8481 | { | |
8482 | int repeat; | |
8483 | ||
8484 | if (sec->reloc_count == 0 | |
dbaa2011 | 8485 | || discarded_section (sec) |
c5614fa4 AM |
8486 | || get_opd_info (sec) |
8487 | || (sec->flags & SEC_ALLOC) == 0 | |
8488 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8489 | continue; | |
8490 | ||
854b41e7 AM |
8491 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8492 | info->keep_memory); | |
c5614fa4 | 8493 | if (relstart == NULL) |
2915c55b JK |
8494 | { |
8495 | free (used); | |
8496 | goto error_ret; | |
8497 | } | |
c5614fa4 AM |
8498 | |
8499 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8500 | do |
d4f1ee75 AM |
8501 | { |
8502 | repeat = 0; | |
8503 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8504 | { | |
8505 | enum elf_ppc64_reloc_type r_type; | |
8506 | unsigned long r_symndx; | |
8507 | asection *sym_sec; | |
8508 | struct elf_link_hash_entry *h; | |
8509 | Elf_Internal_Sym *sym; | |
8510 | bfd_vma val; | |
8511 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8512 | |
d4f1ee75 AM |
8513 | r_type = ELF64_R_TYPE (rel->r_info); |
8514 | switch (r_type) | |
8515 | { | |
8516 | default: | |
8517 | insn_check = no_check; | |
8518 | break; | |
98528052 | 8519 | |
d4f1ee75 AM |
8520 | case R_PPC64_GOT_TLSLD16_HA: |
8521 | case R_PPC64_GOT_TLSGD16_HA: | |
8522 | case R_PPC64_GOT_TPREL16_HA: | |
8523 | case R_PPC64_GOT_DTPREL16_HA: | |
8524 | case R_PPC64_GOT16_HA: | |
8525 | case R_PPC64_TOC16_HA: | |
8526 | insn_check = check_ha; | |
8527 | break; | |
98528052 | 8528 | |
d4f1ee75 AM |
8529 | case R_PPC64_GOT_TLSLD16_LO: |
8530 | case R_PPC64_GOT_TLSGD16_LO: | |
8531 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8532 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8533 | case R_PPC64_GOT16_LO: | |
8534 | case R_PPC64_GOT16_LO_DS: | |
8535 | case R_PPC64_TOC16_LO: | |
8536 | case R_PPC64_TOC16_LO_DS: | |
8537 | insn_check = check_lo; | |
8538 | break; | |
8539 | } | |
560c8763 | 8540 | |
d4f1ee75 AM |
8541 | if (insn_check != no_check) |
8542 | { | |
8543 | bfd_vma off = rel->r_offset & ~3; | |
8544 | unsigned char buf[4]; | |
8545 | unsigned int insn; | |
c5614fa4 | 8546 | |
d4f1ee75 AM |
8547 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8548 | { | |
8549 | free (used); | |
8550 | goto error_ret; | |
8551 | } | |
8552 | insn = bfd_get_32 (ibfd, buf); | |
8553 | if (insn_check == check_lo | |
39eeab25 | 8554 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
8555 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
8556 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8557 | { | |
8558 | char str[12]; | |
8559 | ||
8560 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8561 | sprintf (str, "%#08x", insn); | |
8562 | info->callbacks->einfo | |
695344c0 | 8563 | /* xgettext:c-format */ |
174d0a74 | 8564 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 8565 | " %s instruction\n"), |
d4f1ee75 AM |
8566 | ibfd, sec, rel->r_offset & ~3, str); |
8567 | } | |
8568 | } | |
c5614fa4 | 8569 | |
d4f1ee75 AM |
8570 | switch (r_type) |
8571 | { | |
8572 | case R_PPC64_TOC16: | |
8573 | case R_PPC64_TOC16_LO: | |
8574 | case R_PPC64_TOC16_HI: | |
8575 | case R_PPC64_TOC16_HA: | |
8576 | case R_PPC64_TOC16_DS: | |
8577 | case R_PPC64_TOC16_LO_DS: | |
8578 | /* In case we're taking addresses of toc entries. */ | |
8579 | case R_PPC64_ADDR64: | |
8580 | break; | |
c5614fa4 | 8581 | |
d4f1ee75 AM |
8582 | default: |
8583 | continue; | |
8584 | } | |
c5614fa4 | 8585 | |
d4f1ee75 AM |
8586 | r_symndx = ELF64_R_SYM (rel->r_info); |
8587 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8588 | r_symndx, ibfd)) | |
8589 | { | |
8590 | free (used); | |
8591 | goto error_ret; | |
8592 | } | |
c5614fa4 | 8593 | |
d4f1ee75 AM |
8594 | if (sym_sec != toc) |
8595 | continue; | |
c5614fa4 | 8596 | |
d4f1ee75 AM |
8597 | if (h != NULL) |
8598 | val = h->root.u.def.value; | |
8599 | else | |
8600 | val = sym->st_value; | |
8601 | val += rel->r_addend; | |
ba761f19 | 8602 | |
d4f1ee75 AM |
8603 | if (val >= toc->size) |
8604 | continue; | |
ba761f19 | 8605 | |
d4f1ee75 AM |
8606 | if ((skip[val >> 3] & can_optimize) != 0) |
8607 | { | |
8608 | bfd_vma off; | |
8609 | unsigned char opc; | |
8610 | ||
8611 | switch (r_type) | |
8612 | { | |
8613 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8614 | break; |
ba761f19 | 8615 | |
d4f1ee75 AM |
8616 | case R_PPC64_TOC16_LO_DS: |
8617 | off = rel->r_offset; | |
8618 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8619 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8620 | off, 1)) | |
8621 | { | |
8622 | free (used); | |
8623 | goto error_ret; | |
8624 | } | |
8625 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8626 | break; | |
1a0670f3 | 8627 | /* Fall through. */ |
ba761f19 | 8628 | |
d4f1ee75 AM |
8629 | default: |
8630 | /* Wrong sort of reloc, or not a ld. We may | |
8631 | as well clear ref_from_discarded too. */ | |
8632 | skip[val >> 3] = 0; | |
8633 | } | |
8634 | } | |
8635 | ||
8636 | if (sec != toc) | |
8637 | used[val >> 3] = 1; | |
8638 | /* For the toc section, we only mark as used if this | |
8639 | entry itself isn't unused. */ | |
8640 | else if ((used[rel->r_offset >> 3] | |
8641 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8642 | && !used[val >> 3]) | |
8643 | { | |
8644 | /* Do all the relocs again, to catch reference | |
8645 | chains. */ | |
8646 | repeat = 1; | |
8647 | used[val >> 3] = 1; | |
8648 | } | |
8649 | } | |
8650 | } | |
c5614fa4 | 8651 | while (repeat); |
854b41e7 AM |
8652 | |
8653 | if (elf_section_data (sec)->relocs != relstart) | |
8654 | free (relstart); | |
c5614fa4 AM |
8655 | } |
8656 | ||
8657 | /* Merge the used and skip arrays. Assume that TOC | |
8658 | doublewords not appearing as either used or unused belong | |
de194d85 | 8659 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
8660 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
8661 | drop < skip + (toc->size + 7) / 8; | |
8662 | ++drop, ++keep) | |
8663 | { | |
8664 | if (*keep) | |
8665 | { | |
ba761f19 AM |
8666 | *drop &= ~ref_from_discarded; |
8667 | if ((*drop & can_optimize) != 0) | |
8668 | some_unused = 1; | |
c5614fa4 AM |
8669 | last = 0; |
8670 | } | |
b140b010 | 8671 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8672 | { |
8673 | some_unused = 1; | |
ba761f19 | 8674 | last = ref_from_discarded; |
c5614fa4 AM |
8675 | } |
8676 | else | |
8677 | *drop = last; | |
8678 | } | |
8679 | ||
8680 | free (used); | |
8681 | ||
8682 | if (some_unused) | |
8683 | { | |
8684 | bfd_byte *contents, *src; | |
8685 | unsigned long off; | |
d62b3684 | 8686 | Elf_Internal_Sym *sym; |
ba761f19 | 8687 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8688 | |
8689 | /* Shuffle the toc contents, and at the same time convert the | |
8690 | skip array from booleans into offsets. */ | |
8691 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8692 | goto error_ret; | |
8693 | ||
8694 | elf_section_data (toc)->this_hdr.contents = contents; | |
8695 | ||
8696 | for (src = contents, off = 0, drop = skip; | |
8697 | src < contents + toc->size; | |
8698 | src += 8, ++drop) | |
8699 | { | |
ba761f19 AM |
8700 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8701 | off += 8; | |
c5614fa4 AM |
8702 | else if (off != 0) |
8703 | { | |
8704 | *drop = off; | |
8705 | memcpy (src - off, src, 8); | |
8706 | } | |
8707 | } | |
854b41e7 | 8708 | *drop = off; |
c5614fa4 AM |
8709 | toc->rawsize = toc->size; |
8710 | toc->size = src - contents - off; | |
8711 | ||
ba761f19 AM |
8712 | /* Adjust addends for relocs against the toc section sym, |
8713 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8714 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8715 | { | |
8716 | if (sec->reloc_count == 0 | |
dbaa2011 | 8717 | || discarded_section (sec)) |
c5614fa4 AM |
8718 | continue; |
8719 | ||
8720 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8721 | info->keep_memory); |
c5614fa4 AM |
8722 | if (relstart == NULL) |
8723 | goto error_ret; | |
8724 | ||
8725 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8726 | { | |
8727 | enum elf_ppc64_reloc_type r_type; | |
8728 | unsigned long r_symndx; | |
8729 | asection *sym_sec; | |
8730 | struct elf_link_hash_entry *h; | |
854b41e7 | 8731 | bfd_vma val; |
c5614fa4 AM |
8732 | |
8733 | r_type = ELF64_R_TYPE (rel->r_info); | |
8734 | switch (r_type) | |
8735 | { | |
8736 | default: | |
8737 | continue; | |
8738 | ||
8739 | case R_PPC64_TOC16: | |
8740 | case R_PPC64_TOC16_LO: | |
8741 | case R_PPC64_TOC16_HI: | |
8742 | case R_PPC64_TOC16_HA: | |
8743 | case R_PPC64_TOC16_DS: | |
8744 | case R_PPC64_TOC16_LO_DS: | |
8745 | case R_PPC64_ADDR64: | |
8746 | break; | |
8747 | } | |
8748 | ||
8749 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8750 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8751 | r_symndx, ibfd)) | |
8752 | goto error_ret; | |
8753 | ||
ba761f19 | 8754 | if (sym_sec != toc) |
c5614fa4 AM |
8755 | continue; |
8756 | ||
ba761f19 AM |
8757 | if (h != NULL) |
8758 | val = h->root.u.def.value; | |
8759 | else | |
8760 | { | |
8761 | val = sym->st_value; | |
8762 | if (val != 0) | |
8763 | local_toc_syms = TRUE; | |
8764 | } | |
8765 | ||
8766 | val += rel->r_addend; | |
854b41e7 AM |
8767 | |
8768 | if (val > toc->rawsize) | |
8769 | val = toc->rawsize; | |
ba761f19 AM |
8770 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8771 | continue; | |
8772 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8773 | { | |
8774 | Elf_Internal_Rela *tocrel | |
425b145b | 8775 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
8776 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
8777 | ||
8778 | switch (r_type) | |
8779 | { | |
8780 | case R_PPC64_TOC16_HA: | |
8781 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8782 | break; | |
8783 | ||
8784 | case R_PPC64_TOC16_LO_DS: | |
8785 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8786 | break; | |
8787 | ||
8788 | default: | |
28942f62 AM |
8789 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
8790 | ppc_howto_init (); | |
b140b010 | 8791 | info->callbacks->einfo |
695344c0 | 8792 | /* xgettext:c-format */ |
174d0a74 | 8793 | (_("%H: %s references " |
b140b010 AM |
8794 | "optimized away TOC entry\n"), |
8795 | ibfd, sec, rel->r_offset, | |
8796 | ppc64_elf_howto_table[r_type]->name); | |
8797 | bfd_set_error (bfd_error_bad_value); | |
8798 | goto error_ret; | |
ba761f19 AM |
8799 | } |
8800 | rel->r_addend = tocrel->r_addend; | |
8801 | elf_section_data (sec)->relocs = relstart; | |
8802 | continue; | |
8803 | } | |
8804 | ||
8805 | if (h != NULL || sym->st_value != 0) | |
8806 | continue; | |
854b41e7 AM |
8807 | |
8808 | rel->r_addend -= skip[val >> 3]; | |
8809 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8810 | } |
854b41e7 AM |
8811 | |
8812 | if (elf_section_data (sec)->relocs != relstart) | |
8813 | free (relstart); | |
c5614fa4 AM |
8814 | } |
8815 | ||
8816 | /* We shouldn't have local or global symbols defined in the TOC, | |
8817 | but handle them anyway. */ | |
df22d223 AM |
8818 | if (local_syms != NULL) |
8819 | for (sym = local_syms; | |
8820 | sym < local_syms + symtab_hdr->sh_info; | |
8821 | ++sym) | |
8822 | if (sym->st_value != 0 | |
8823 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8824 | { | |
8825 | unsigned long i; | |
854b41e7 | 8826 | |
df22d223 AM |
8827 | if (sym->st_value > toc->rawsize) |
8828 | i = toc->rawsize >> 3; | |
8829 | else | |
8830 | i = sym->st_value >> 3; | |
854b41e7 | 8831 | |
df22d223 AM |
8832 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8833 | { | |
8834 | if (local_toc_syms) | |
4eca0228 | 8835 | _bfd_error_handler |
df22d223 AM |
8836 | (_("%s defined on removed toc entry"), |
8837 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8838 | do | |
8839 | ++i; | |
8840 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8841 | sym->st_value = (bfd_vma) i << 3; | |
8842 | } | |
d62b3684 | 8843 | |
df22d223 AM |
8844 | sym->st_value -= skip[i]; |
8845 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8846 | } | |
c5614fa4 | 8847 | |
854b41e7 | 8848 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8849 | if (toc_inf.global_toc_syms) |
8850 | { | |
8851 | toc_inf.toc = toc; | |
8852 | toc_inf.skip = skip; | |
8853 | toc_inf.global_toc_syms = FALSE; | |
8854 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8855 | &toc_inf); | |
8856 | } | |
854b41e7 AM |
8857 | |
8858 | if (toc->reloc_count != 0) | |
8859 | { | |
d4730f92 | 8860 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8861 | Elf_Internal_Rela *wrel; |
8862 | bfd_size_type sz; | |
8863 | ||
854b41e7 | 8864 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
8865 | if (toc_relocs == NULL) |
8866 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8867 | info->keep_memory); | |
8868 | if (toc_relocs == NULL) | |
8869 | goto error_ret; | |
8870 | ||
425b145b AM |
8871 | wrel = toc_relocs; |
8872 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
8873 | if ((skip[rel->r_offset >> 3] |
8874 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8875 | { |
8876 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8877 | wrel->r_info = rel->r_info; | |
8878 | wrel->r_addend = rel->r_addend; | |
8879 | ++wrel; | |
8880 | } | |
8881 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
8882 | &local_syms, NULL, NULL)) | |
8883 | goto error_ret; | |
8884 | ||
425b145b AM |
8885 | elf_section_data (toc)->relocs = toc_relocs; |
8886 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
8887 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
8888 | sz = rel_hdr->sh_entsize; | |
8889 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 8890 | } |
c5614fa4 | 8891 | } |
28be611c AM |
8892 | else if (toc_relocs != NULL |
8893 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 8894 | free (toc_relocs); |
c5614fa4 AM |
8895 | |
8896 | if (local_syms != NULL | |
8897 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8898 | { | |
8899 | if (!info->keep_memory) | |
8900 | free (local_syms); | |
8901 | else | |
8902 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8903 | } | |
8904 | free (skip); | |
8905 | } | |
8906 | ||
066f4018 | 8907 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
8908 | a GOT relative or PC relative access, possibly reducing the |
8909 | number of GOT entries. */ | |
066f4018 AM |
8910 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
8911 | { | |
8912 | asection *sec; | |
8913 | Elf_Internal_Shdr *symtab_hdr; | |
8914 | Elf_Internal_Sym *local_syms; | |
8915 | Elf_Internal_Rela *relstart, *rel; | |
8916 | bfd_vma got; | |
8917 | ||
8918 | if (!is_ppc64_elf (ibfd)) | |
8919 | continue; | |
8920 | ||
8921 | if (!ppc64_elf_tdata (ibfd)->has_gotrel) | |
8922 | continue; | |
8923 | ||
8924 | sec = ppc64_elf_tdata (ibfd)->got; | |
8925 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
8926 | ||
8927 | local_syms = NULL; | |
8928 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8929 | ||
8930 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8931 | { | |
8932 | if (sec->reloc_count == 0 | |
8933 | || !ppc64_elf_section_data (sec)->has_gotrel | |
8934 | || discarded_section (sec)) | |
8935 | continue; | |
8936 | ||
8937 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8938 | info->keep_memory); | |
8939 | if (relstart == NULL) | |
8940 | { | |
8941 | got_error_ret: | |
8942 | if (local_syms != NULL | |
8943 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8944 | free (local_syms); | |
8945 | if (sec != NULL | |
8946 | && relstart != NULL | |
8947 | && elf_section_data (sec)->relocs != relstart) | |
8948 | free (relstart); | |
8949 | return FALSE; | |
8950 | } | |
8951 | ||
8952 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8953 | { | |
8954 | enum elf_ppc64_reloc_type r_type; | |
8955 | unsigned long r_symndx; | |
8956 | Elf_Internal_Sym *sym; | |
8957 | asection *sym_sec; | |
8958 | struct elf_link_hash_entry *h; | |
8959 | struct got_entry *ent; | |
4a421c53 AM |
8960 | bfd_vma sym_addend, val, pc; |
8961 | unsigned char buf[8]; | |
066f4018 AM |
8962 | unsigned int insn; |
8963 | ||
8964 | r_type = ELF64_R_TYPE (rel->r_info); | |
8965 | switch (r_type) | |
8966 | { | |
8967 | default: | |
8968 | continue; | |
8969 | ||
8970 | case R_PPC64_GOT16_DS: | |
8971 | case R_PPC64_GOT16_HA: | |
8972 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 AM |
8973 | sym_addend = rel->r_addend; |
8974 | break; | |
8975 | ||
8976 | case R_PPC64_GOT_PCREL34: | |
8977 | sym_addend = 0; | |
066f4018 AM |
8978 | break; |
8979 | } | |
8980 | ||
8981 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8982 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8983 | r_symndx, ibfd)) | |
8984 | goto got_error_ret; | |
8985 | ||
8986 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) | |
8987 | continue; | |
8988 | ||
8989 | if (h != NULL) | |
8990 | val = h->root.u.def.value; | |
8991 | else | |
8992 | val = sym->st_value; | |
4a421c53 | 8993 | val += sym_addend; |
066f4018 AM |
8994 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
8995 | ||
8996 | switch (r_type) | |
8997 | { | |
8998 | default: | |
8999 | continue; | |
9000 | ||
9001 | case R_PPC64_GOT16_DS: | |
9002 | if (val - got + 0x8000 >= 0x10000) | |
9003 | continue; | |
9004 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9005 | rel->r_offset & ~3, 4)) | |
9006 | goto got_error_ret; | |
9007 | insn = bfd_get_32 (ibfd, buf); | |
9008 | if ((insn & (0x3f << 26 | 0x3)) != 58u << 26 /* ld */) | |
9009 | continue; | |
9010 | break; | |
9011 | ||
9012 | case R_PPC64_GOT16_HA: | |
9013 | if (val - got + 0x80008000ULL >= 0x100000000ULL) | |
9014 | continue; | |
9015 | ||
9016 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9017 | rel->r_offset & ~3, 4)) | |
9018 | goto got_error_ret; | |
9019 | insn = bfd_get_32 (ibfd, buf); | |
9020 | if (((insn & ((0x3f << 26) | 0x1f << 16)) | |
9021 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9022 | continue; | |
9023 | break; | |
9024 | ||
9025 | case R_PPC64_GOT16_LO_DS: | |
9026 | if (val - got + 0x80008000ULL >= 0x100000000ULL) | |
9027 | continue; | |
9028 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9029 | rel->r_offset & ~3, 4)) | |
9030 | goto got_error_ret; | |
9031 | insn = bfd_get_32 (ibfd, buf); | |
9032 | if ((insn & (0x3f << 26 | 0x3)) != 58u << 26 /* ld */) | |
9033 | continue; | |
9034 | break; | |
4a421c53 AM |
9035 | |
9036 | case R_PPC64_GOT_PCREL34: | |
9037 | pc = rel->r_offset; | |
9038 | pc += sec->output_section->vma + sec->output_offset; | |
9039 | if (val - pc + (1ULL << 33) >= 1ULL << 34) | |
9040 | continue; | |
9041 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9042 | rel->r_offset & ~3, 8)) | |
9043 | goto got_error_ret; | |
9044 | insn = bfd_get_32 (ibfd, buf); | |
9045 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9046 | continue; | |
9047 | insn = bfd_get_32 (ibfd, buf + 4); | |
9048 | if ((insn & (0x3f << 26)) != 57u << 26) | |
9049 | continue; | |
9050 | break; | |
066f4018 AM |
9051 | } |
9052 | ||
9053 | if (h != NULL) | |
9054 | ent = h->got.glist; | |
9055 | else | |
9056 | { | |
9057 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9058 | ent = local_got_ents[r_symndx]; | |
9059 | } | |
9060 | for (; ent != NULL; ent = ent->next) | |
4a421c53 | 9061 | if (ent->addend == sym_addend |
066f4018 AM |
9062 | && ent->owner == ibfd |
9063 | && ent->tls_type == 0) | |
9064 | break; | |
9065 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9066 | ent->got.refcount -= 1; | |
9067 | } | |
9068 | ||
9069 | if (elf_section_data (sec)->relocs != relstart) | |
9070 | free (relstart); | |
9071 | } | |
9072 | ||
9073 | if (local_syms != NULL | |
9074 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9075 | { | |
9076 | if (!info->keep_memory) | |
9077 | free (local_syms); | |
9078 | else | |
9079 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9080 | } | |
9081 | } | |
9082 | ||
c5614fa4 AM |
9083 | return TRUE; |
9084 | } | |
9085 | ||
1bbe0902 AM |
9086 | /* Return true iff input section I references the TOC using |
9087 | instructions limited to +/-32k offsets. */ | |
9088 | ||
9089 | bfd_boolean | |
9090 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9091 | { | |
9092 | return (is_ppc64_elf (i->owner) | |
9093 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9094 | } | |
9095 | ||
927be08e AM |
9096 | /* Allocate space for one GOT entry. */ |
9097 | ||
9098 | static void | |
9099 | allocate_got (struct elf_link_hash_entry *h, | |
9100 | struct bfd_link_info *info, | |
9101 | struct got_entry *gent) | |
9102 | { | |
9103 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9104 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9105 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9106 | ? 16 : 8); | |
9107 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9108 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9109 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9110 | ||
9111 | gent->got.offset = got->size; | |
9112 | got->size += entsize; | |
9113 | ||
19e08130 | 9114 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9115 | { |
33e44f2e | 9116 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9117 | htab->got_reli_size += rentsize; |
927be08e | 9118 | } |
f15d0b54 AM |
9119 | else if (((bfd_link_pic (info) |
9120 | && !((gent->tls_type & TLS_TPREL) != 0 | |
9121 | && bfd_link_executable (info) | |
9122 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9123 | || (htab->elf.dynamic_sections_created |
9124 | && h->dynindx != -1 | |
9125 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9126 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9127 | { |
19e08130 | 9128 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9129 | relgot->size += rentsize; |
927be08e AM |
9130 | } |
9131 | } | |
9132 | ||
7865406b AM |
9133 | /* This function merges got entries in the same toc group. */ |
9134 | ||
9135 | static void | |
9136 | merge_got_entries (struct got_entry **pent) | |
9137 | { | |
9138 | struct got_entry *ent, *ent2; | |
9139 | ||
9140 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9141 | if (!ent->is_indirect) | |
9142 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9143 | if (!ent2->is_indirect | |
9144 | && ent2->addend == ent->addend | |
9145 | && ent2->tls_type == ent->tls_type | |
9146 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9147 | { | |
9148 | ent2->is_indirect = TRUE; | |
9149 | ent2->got.ent = ent; | |
9150 | } | |
9151 | } | |
9152 | ||
46434633 | 9153 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9154 | |
9155 | static bfd_boolean | |
46434633 AM |
9156 | ensure_undef_dynamic (struct bfd_link_info *info, |
9157 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9158 | { |
9159 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9160 | ||
9161 | if (htab->dynamic_sections_created | |
46434633 AM |
9162 | && ((info->dynamic_undefined_weak != 0 |
9163 | && h->root.type == bfd_link_hash_undefweak) | |
9164 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9165 | && h->dynindx == -1 |
9166 | && !h->forced_local | |
9167 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9168 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9169 | return TRUE; | |
9170 | } | |
9171 | ||
65f38f15 AM |
9172 | /* Allocate space in .plt, .got and associated reloc sections for |
9173 | dynamic relocs. */ | |
5bd4f169 | 9174 | |
b34976b6 | 9175 | static bfd_boolean |
4ce794b7 | 9176 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9177 | { |
65f38f15 AM |
9178 | struct bfd_link_info *info; |
9179 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9180 | asection *s; |
65f38f15 | 9181 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9182 | struct got_entry **pgent, *gent; |
5bd4f169 | 9183 | |
e92d460e | 9184 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9185 | return TRUE; |
5bd4f169 | 9186 | |
65f38f15 AM |
9187 | info = (struct bfd_link_info *) inf; |
9188 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9189 | if (htab == NULL) |
9190 | return FALSE; | |
5bd4f169 | 9191 | |
951fd09b AM |
9192 | eh = (struct ppc_link_hash_entry *) h; |
9193 | /* Run through the TLS GD got entries first if we're changing them | |
9194 | to TPREL. */ | |
37da22e5 | 9195 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
9196 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9197 | if (gent->got.refcount > 0 | |
9198 | && (gent->tls_type & TLS_GD) != 0) | |
9199 | { | |
9200 | /* This was a GD entry that has been converted to TPREL. If | |
9201 | there happens to be a TPREL entry we can use that one. */ | |
9202 | struct got_entry *ent; | |
9203 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9204 | if (ent->got.refcount > 0 | |
9205 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9206 | && ent->addend == gent->addend |
9207 | && ent->owner == gent->owner) | |
951fd09b AM |
9208 | { |
9209 | gent->got.refcount = 0; | |
9210 | break; | |
9211 | } | |
9212 | ||
9213 | /* If not, then we'll be using our own TPREL entry. */ | |
9214 | if (gent->got.refcount != 0) | |
9215 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9216 | } | |
9217 | ||
7865406b AM |
9218 | /* Remove any list entry that won't generate a word in the GOT before |
9219 | we call merge_got_entries. Otherwise we risk merging to empty | |
9220 | entries. */ | |
0b8bcf0d AM |
9221 | pgent = &h->got.glist; |
9222 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9223 | if (gent->got.refcount > 0) |
7865406b AM |
9224 | { |
9225 | if ((gent->tls_type & TLS_LD) != 0 | |
9226 | && !h->def_dynamic) | |
9227 | { | |
9228 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9229 | *pgent = gent->next; | |
9230 | } | |
9231 | else | |
9232 | pgent = &gent->next; | |
9233 | } | |
9234 | else | |
9235 | *pgent = gent->next; | |
9236 | ||
9237 | if (!htab->do_multi_toc) | |
9238 | merge_got_entries (&h->got.glist); | |
9239 | ||
9240 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9241 | if (!gent->is_indirect) | |
411e1bfb | 9242 | { |
46434633 AM |
9243 | /* Make sure this symbol is output as a dynamic symbol. */ |
9244 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9245 | return FALSE; |
65f38f15 | 9246 | |
0c8d6e5c | 9247 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9248 | abort (); |
0ffa91dd | 9249 | |
927be08e | 9250 | allocate_got (h, info, gent); |
411e1bfb | 9251 | } |
65f38f15 | 9252 | |
954b63d4 AM |
9253 | /* If no dynamic sections we can't have dynamic relocs, except for |
9254 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9255 | if (!htab->elf.dynamic_sections_created |
9256 | && h->type != STT_GNU_IFUNC) | |
9257 | eh->dyn_relocs = NULL; | |
9258 | ||
529fe20e AM |
9259 | /* Discard relocs on undefined symbols that must be local. */ |
9260 | else if (h->root.type == bfd_link_hash_undefined | |
9261 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9262 | eh->dyn_relocs = NULL; | |
9263 | ||
954b63d4 AM |
9264 | /* Also discard relocs on undefined weak syms with non-default |
9265 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9266 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
9267 | eh->dyn_relocs = NULL; |
9268 | ||
8a2058b5 | 9269 | if (eh->dyn_relocs != NULL) |
65f38f15 | 9270 | { |
8a2058b5 AM |
9271 | struct elf_dyn_relocs *p, **pp; |
9272 | ||
57e7d118 AM |
9273 | /* In the shared -Bsymbolic case, discard space allocated for |
9274 | dynamic pc-relative relocs against symbols which turn out to | |
9275 | be defined in regular objects. For the normal shared case, | |
9276 | discard space for relocs that have become local due to symbol | |
9277 | visibility changes. */ | |
9278 | ||
9279 | if (bfd_link_pic (info)) | |
65f38f15 | 9280 | { |
57e7d118 AM |
9281 | /* Relocs that use pc_count are those that appear on a call |
9282 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9283 | can be generated via assembly. We want calls to | |
9284 | protected symbols to resolve directly to the function | |
9285 | rather than going via the plt. If people want function | |
9286 | pointer comparisons to work as expected then they should | |
9287 | avoid writing weird assembly. */ | |
9288 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9289 | { | |
57e7d118 AM |
9290 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
9291 | { | |
9292 | p->count -= p->pc_count; | |
9293 | p->pc_count = 0; | |
9294 | if (p->count == 0) | |
9295 | *pp = p->next; | |
9296 | else | |
9297 | pp = &p->next; | |
9298 | } | |
9299 | } | |
65f38f15 | 9300 | |
954b63d4 | 9301 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 9302 | { |
46434633 AM |
9303 | /* Make sure this symbol is output as a dynamic symbol. */ |
9304 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9305 | return FALSE; |
5bd4f169 | 9306 | } |
65f38f15 | 9307 | } |
529fe20e | 9308 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 9309 | { |
8a2058b5 | 9310 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
9311 | symbols which turn out to need copy relocs or are not |
9312 | dynamic. */ | |
529fe20e AM |
9313 | if (h->dynamic_adjusted |
9314 | && !h->def_regular | |
9315 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9316 | { |
46434633 AM |
9317 | /* Make sure this symbol is output as a dynamic symbol. */ |
9318 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9319 | return FALSE; |
dfbb6ac9 | 9320 | |
f0158f44 AM |
9321 | if (h->dynindx == -1) |
9322 | eh->dyn_relocs = NULL; | |
9323 | } | |
9324 | else | |
8a2058b5 | 9325 | eh->dyn_relocs = NULL; |
57e7d118 AM |
9326 | } |
9327 | ||
9328 | /* Finally, allocate space. */ | |
9329 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9330 | { | |
9331 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9332 | if (eh->elf.type == STT_GNU_IFUNC) | |
9333 | sreloc = htab->elf.irelplt; | |
9334 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9335 | } |
65f38f15 | 9336 | } |
57e7d118 | 9337 | |
2d7ad24e AM |
9338 | /* We might need a PLT entry when the symbol |
9339 | a) is dynamic, or | |
9340 | b) is an ifunc, or | |
9341 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9342 | d) has plt16 relocs and we are linking statically. */ | |
9343 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9344 | || h->type == STT_GNU_IFUNC | |
9345 | || (h->needs_plt && h->dynamic_adjusted) | |
9346 | || (h->needs_plt | |
9347 | && h->def_regular | |
9348 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9349 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
9350 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
9351 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 9352 | { |
57e7d118 AM |
9353 | struct plt_entry *pent; |
9354 | bfd_boolean doneone = FALSE; | |
9355 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9356 | if (pent->plt.refcount > 0) | |
9357 | { | |
9358 | if (!htab->elf.dynamic_sections_created | |
9359 | || h->dynindx == -1) | |
9360 | { | |
2d7ad24e AM |
9361 | if (h->type == STT_GNU_IFUNC) |
9362 | { | |
9363 | s = htab->elf.iplt; | |
9364 | pent->plt.offset = s->size; | |
9365 | s->size += PLT_ENTRY_SIZE (htab); | |
9366 | s = htab->elf.irelplt; | |
9367 | } | |
9368 | else | |
9369 | { | |
9370 | s = htab->pltlocal; | |
9371 | pent->plt.offset = s->size; | |
9372 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9373 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9374 | } | |
57e7d118 AM |
9375 | } |
9376 | else | |
9377 | { | |
9378 | /* If this is the first .plt entry, make room for the special | |
9379 | first entry. */ | |
9380 | s = htab->elf.splt; | |
9381 | if (s->size == 0) | |
9382 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9383 | |
57e7d118 | 9384 | pent->plt.offset = s->size; |
65f38f15 | 9385 | |
57e7d118 AM |
9386 | /* Make room for this entry. */ |
9387 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9388 | |
57e7d118 AM |
9389 | /* Make room for the .glink code. */ |
9390 | s = htab->glink; | |
9391 | if (s->size == 0) | |
9e390558 | 9392 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9393 | if (htab->opd_abi) |
9394 | { | |
9395 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9396 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9397 | s->size += 4; |
9398 | s->size += 2*4; | |
9399 | } | |
9400 | else | |
9401 | s->size += 4; | |
65f38f15 | 9402 | |
57e7d118 AM |
9403 | /* We also need to make an entry in the .rela.plt section. */ |
9404 | s = htab->elf.srelplt; | |
9405 | } | |
2d7ad24e AM |
9406 | if (s != NULL) |
9407 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
9408 | doneone = TRUE; |
9409 | } | |
9410 | else | |
9411 | pent->plt.offset = (bfd_vma) -1; | |
9412 | if (!doneone) | |
9413 | { | |
9414 | h->plt.plist = NULL; | |
9415 | h->needs_plt = 0; | |
9416 | } | |
65f38f15 | 9417 | } |
57e7d118 | 9418 | else |
65f38f15 | 9419 | { |
57e7d118 AM |
9420 | h->plt.plist = NULL; |
9421 | h->needs_plt = 0; | |
65f38f15 AM |
9422 | } |
9423 | ||
b34976b6 | 9424 | return TRUE; |
65f38f15 AM |
9425 | } |
9426 | ||
9e390558 AM |
9427 | #define PPC_LO(v) ((v) & 0xffff) |
9428 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9429 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
9430 | ||
a345bc8d AM |
9431 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9432 | to set up space for global entry stubs. These are put in glink, | |
9433 | after the branch table. */ | |
65f38f15 | 9434 | |
b34976b6 | 9435 | static bfd_boolean |
a345bc8d | 9436 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9437 | { |
a345bc8d AM |
9438 | struct bfd_link_info *info; |
9439 | struct ppc_link_hash_table *htab; | |
9440 | struct plt_entry *pent; | |
9e390558 | 9441 | asection *s, *plt; |
65f38f15 | 9442 | |
a345bc8d AM |
9443 | if (h->root.type == bfd_link_hash_indirect) |
9444 | return TRUE; | |
65f38f15 | 9445 | |
a345bc8d AM |
9446 | if (!h->pointer_equality_needed) |
9447 | return TRUE; | |
65f38f15 | 9448 | |
a345bc8d AM |
9449 | if (h->def_regular) |
9450 | return TRUE; | |
65f38f15 | 9451 | |
a345bc8d AM |
9452 | info = inf; |
9453 | htab = ppc_hash_table (info); | |
9454 | if (htab == NULL) | |
9455 | return FALSE; | |
9456 | ||
9e390558 AM |
9457 | s = htab->global_entry; |
9458 | plt = htab->elf.splt; | |
a345bc8d AM |
9459 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9460 | if (pent->plt.offset != (bfd_vma) -1 | |
9461 | && pent->addend == 0) | |
9462 | { | |
afe397ea AM |
9463 | /* For ELFv2, if this symbol is not defined in a regular file |
9464 | and we are not generating a shared library or pie, then we | |
9465 | need to define the symbol in the executable on a call stub. | |
9466 | This is to avoid text relocations. */ | |
9e390558 AM |
9467 | bfd_vma off, stub_align, stub_off, stub_size; |
9468 | unsigned int align_power; | |
9469 | ||
9470 | stub_size = 16; | |
9471 | stub_off = s->size; | |
9472 | if (htab->params->plt_stub_align >= 0) | |
9473 | align_power = htab->params->plt_stub_align; | |
9474 | else | |
9475 | align_power = -htab->params->plt_stub_align; | |
9476 | /* Setting section alignment is delayed until we know it is | |
9477 | non-empty. Otherwise the .text output section will be | |
9478 | aligned at least to plt_stub_align even when no global | |
9479 | entry stubs are needed. */ | |
9480 | if (s->alignment_power < align_power) | |
9481 | s->alignment_power = align_power; | |
9482 | stub_align = (bfd_vma) 1 << align_power; | |
9483 | if (htab->params->plt_stub_align >= 0 | |
9484 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9485 | - (stub_off & -stub_align)) | |
9486 | > ((stub_size - 1) & -stub_align))) | |
9487 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9488 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9489 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9490 | /* Note that for --plt-stub-align negative we have a possible | |
9491 | dependency between stub offset and size. Break that | |
9492 | dependency by assuming the max stub size when calculating | |
9493 | the stub offset. */ | |
9494 | if (PPC_HA (off) == 0) | |
9495 | stub_size -= 4; | |
8a2058b5 | 9496 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9497 | h->root.u.def.section = s; |
9e390558 AM |
9498 | h->root.u.def.value = stub_off; |
9499 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9500 | break; |
9501 | } | |
9502 | return TRUE; | |
9503 | } | |
9504 | ||
9505 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9506 | read-only sections. */ | |
9507 | ||
9508 | static bfd_boolean | |
98bbb1b8 | 9509 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 9510 | { |
98bbb1b8 AM |
9511 | asection *sec; |
9512 | ||
a345bc8d AM |
9513 | if (h->root.type == bfd_link_hash_indirect) |
9514 | return TRUE; | |
9515 | ||
98bbb1b8 AM |
9516 | sec = readonly_dynrelocs (h); |
9517 | if (sec != NULL) | |
a345bc8d | 9518 | { |
98bbb1b8 AM |
9519 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
9520 | ||
9521 | info->flags |= DF_TEXTREL; | |
2cdcc330 AM |
9522 | info->callbacks->minfo (_("%pB: dynamic relocation against `%pT'" |
9523 | " in read-only section `%pA'\n"), | |
9524 | sec->owner, h->root.root.string, sec); | |
a345bc8d AM |
9525 | |
9526 | /* Not an error, just cut short the traversal. */ | |
9527 | return FALSE; | |
65f38f15 | 9528 | } |
b34976b6 | 9529 | return TRUE; |
65f38f15 AM |
9530 | } |
9531 | ||
9532 | /* Set the sizes of the dynamic sections. */ | |
9533 | ||
b34976b6 | 9534 | static bfd_boolean |
ee67d69a | 9535 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9536 | struct bfd_link_info *info) |
65f38f15 AM |
9537 | { |
9538 | struct ppc_link_hash_table *htab; | |
9539 | bfd *dynobj; | |
9540 | asection *s; | |
b34976b6 | 9541 | bfd_boolean relocs; |
65f38f15 | 9542 | bfd *ibfd; |
7865406b | 9543 | struct got_entry *first_tlsld; |
65f38f15 AM |
9544 | |
9545 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9546 | if (htab == NULL) |
9547 | return FALSE; | |
9548 | ||
65f38f15 AM |
9549 | dynobj = htab->elf.dynobj; |
9550 | if (dynobj == NULL) | |
9551 | abort (); | |
9552 | ||
9553 | if (htab->elf.dynamic_sections_created) | |
9554 | { | |
9555 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9556 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9557 | { |
3d4d4302 | 9558 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9559 | if (s == NULL) |
9560 | abort (); | |
eea6121a | 9561 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9562 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9563 | } | |
9564 | } | |
9565 | ||
9566 | /* Set up .got offsets for local syms, and space for local dynamic | |
9567 | relocs. */ | |
c72f2fb2 | 9568 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9569 | { |
411e1bfb AM |
9570 | struct got_entry **lgot_ents; |
9571 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9572 | struct plt_entry **local_plt; |
9573 | struct plt_entry **end_local_plt; | |
f961d9dd | 9574 | unsigned char *lgot_masks; |
65f38f15 AM |
9575 | bfd_size_type locsymcount; |
9576 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9577 | |
0c8d6e5c | 9578 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9579 | continue; |
9580 | ||
9581 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9582 | { | |
19e08130 | 9583 | struct ppc_dyn_relocs *p; |
65f38f15 | 9584 | |
6edfbbad | 9585 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9586 | { |
ec338859 AM |
9587 | if (!bfd_is_abs_section (p->sec) |
9588 | && bfd_is_abs_section (p->sec->output_section)) | |
9589 | { | |
9590 | /* Input section has been discarded, either because | |
9591 | it is a copy of a linkonce section or due to | |
9592 | linker script /DISCARD/, so we'll be discarding | |
9593 | the relocs too. */ | |
9594 | } | |
248866a8 | 9595 | else if (p->count != 0) |
ec338859 | 9596 | { |
19e08130 AM |
9597 | asection *srel = elf_section_data (p->sec)->sreloc; |
9598 | if (p->ifunc) | |
33e44f2e | 9599 | srel = htab->elf.irelplt; |
eea6121a | 9600 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9601 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9602 | info->flags |= DF_TEXTREL; | |
ec338859 | 9603 | } |
65f38f15 AM |
9604 | } |
9605 | } | |
9606 | ||
411e1bfb AM |
9607 | lgot_ents = elf_local_got_ents (ibfd); |
9608 | if (!lgot_ents) | |
65f38f15 AM |
9609 | continue; |
9610 | ||
0ffa91dd | 9611 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9612 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9613 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9614 | local_plt = (struct plt_entry **) end_lgot_ents; |
9615 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9616 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9617 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9618 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9619 | { |
0b8bcf0d | 9620 | struct got_entry **pent, *ent; |
411e1bfb | 9621 | |
0b8bcf0d AM |
9622 | pent = lgot_ents; |
9623 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9624 | if (ent->got.refcount > 0) |
9625 | { | |
e7b938ca | 9626 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9627 | { |
927be08e | 9628 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9629 | *pent = ent->next; |
411e1bfb AM |
9630 | } |
9631 | else | |
9632 | { | |
19e08130 AM |
9633 | unsigned int ent_size = 8; |
9634 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9635 | ||
eea6121a | 9636 | ent->got.offset = s->size; |
e7b938ca | 9637 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9638 | { |
19e08130 AM |
9639 | ent_size *= 2; |
9640 | rel_size *= 2; | |
9641 | } | |
9642 | s->size += ent_size; | |
37da22e5 | 9643 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 9644 | { |
33e44f2e | 9645 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9646 | htab->got_reli_size += rel_size; |
9647 | } | |
f15d0b54 AM |
9648 | else if (bfd_link_pic (info) |
9649 | && !((ent->tls_type & TLS_TPREL) != 0 | |
9650 | && bfd_link_executable (info))) | |
19e08130 AM |
9651 | { |
9652 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9653 | srel->size += rel_size; | |
927be08e | 9654 | } |
0b8bcf0d | 9655 | pent = &ent->next; |
411e1bfb AM |
9656 | } |
9657 | } | |
9658 | else | |
0b8bcf0d | 9659 | *pent = ent->next; |
65f38f15 | 9660 | } |
e054468f | 9661 | |
2d7ad24e AM |
9662 | /* Allocate space for plt calls to local syms. */ |
9663 | lgot_masks = (unsigned char *) end_local_plt; | |
9664 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
9665 | { |
9666 | struct plt_entry *ent; | |
9667 | ||
9668 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9669 | if (ent->plt.refcount > 0) | |
9670 | { | |
2d7ad24e AM |
9671 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
9672 | { | |
9673 | s = htab->elf.iplt; | |
9674 | ent->plt.offset = s->size; | |
9675 | s->size += PLT_ENTRY_SIZE (htab); | |
9676 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
9677 | } | |
3e04d765 AM |
9678 | else if (htab->can_convert_all_inline_plt |
9679 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
9680 | ent->plt.offset = (bfd_vma) -1; |
9681 | else | |
9682 | { | |
9683 | s = htab->pltlocal; | |
9684 | ent->plt.offset = s->size; | |
9685 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9686 | if (bfd_link_pic (info)) | |
9687 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
9688 | } | |
e054468f AM |
9689 | } |
9690 | else | |
9691 | ent->plt.offset = (bfd_vma) -1; | |
9692 | } | |
65f38f15 AM |
9693 | } |
9694 | ||
9695 | /* Allocate global sym .plt and .got entries, and space for global | |
9696 | sym dynamic relocs. */ | |
4ce794b7 | 9697 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 9698 | |
0e1862bb | 9699 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 9700 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 9701 | |
7865406b | 9702 | first_tlsld = NULL; |
c72f2fb2 | 9703 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 9704 | { |
7865406b AM |
9705 | struct got_entry *ent; |
9706 | ||
0c8d6e5c | 9707 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9708 | continue; |
9709 | ||
7865406b AM |
9710 | ent = ppc64_tlsld_got (ibfd); |
9711 | if (ent->got.refcount > 0) | |
102890f0 | 9712 | { |
7865406b | 9713 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9714 | { |
7865406b AM |
9715 | ent->is_indirect = TRUE; |
9716 | ent->got.ent = first_tlsld; | |
9717 | } | |
9718 | else | |
9719 | { | |
9720 | if (first_tlsld == NULL) | |
9721 | first_tlsld = ent; | |
9722 | s = ppc64_elf_tdata (ibfd)->got; | |
9723 | ent->got.offset = s->size; | |
9724 | ent->owner = ibfd; | |
9725 | s->size += 16; | |
0e1862bb | 9726 | if (bfd_link_pic (info)) |
7865406b AM |
9727 | { |
9728 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9729 | srel->size += sizeof (Elf64_External_Rela); | |
9730 | } | |
102890f0 AM |
9731 | } |
9732 | } | |
9733 | else | |
7865406b | 9734 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9735 | } |
9736 | ||
65f38f15 AM |
9737 | /* We now have determined the sizes of the various dynamic sections. |
9738 | Allocate memory for them. */ | |
b34976b6 | 9739 | relocs = FALSE; |
65f38f15 AM |
9740 | for (s = dynobj->sections; s != NULL; s = s->next) |
9741 | { | |
9742 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9743 | continue; | |
9744 | ||
4ce794b7 | 9745 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9746 | /* These haven't been allocated yet; don't strip. */ |
9747 | continue; | |
33e44f2e AM |
9748 | else if (s == htab->elf.sgot |
9749 | || s == htab->elf.splt | |
9750 | || s == htab->elf.iplt | |
2d7ad24e | 9751 | || s == htab->pltlocal |
c456f082 | 9752 | || s == htab->glink |
9e390558 | 9753 | || s == htab->global_entry |
5474d94f AM |
9754 | || s == htab->elf.sdynbss |
9755 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
9756 | { |
9757 | /* Strip this section if we don't need it; see the | |
9758 | comment below. */ | |
5bd4f169 | 9759 | } |
58d180e8 AM |
9760 | else if (s == htab->glink_eh_frame) |
9761 | { | |
9762 | if (!bfd_is_abs_section (s->output_section)) | |
9763 | /* Not sized yet. */ | |
9764 | continue; | |
9765 | } | |
70cc837d | 9766 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9767 | { |
c456f082 | 9768 | if (s->size != 0) |
5bd4f169 | 9769 | { |
33e44f2e | 9770 | if (s != htab->elf.srelplt) |
b34976b6 | 9771 | relocs = TRUE; |
5bd4f169 AM |
9772 | |
9773 | /* We use the reloc_count field as a counter if we need | |
9774 | to copy relocs into the output file. */ | |
9775 | s->reloc_count = 0; | |
9776 | } | |
9777 | } | |
65f38f15 | 9778 | else |
5bd4f169 AM |
9779 | { |
9780 | /* It's not one of our sections, so don't allocate space. */ | |
9781 | continue; | |
9782 | } | |
9783 | ||
eea6121a | 9784 | if (s->size == 0) |
5bd4f169 | 9785 | { |
c456f082 AM |
9786 | /* If we don't need this section, strip it from the |
9787 | output file. This is mostly to handle .rela.bss and | |
9788 | .rela.plt. We must create both sections in | |
9789 | create_dynamic_sections, because they must be created | |
9790 | before the linker maps input sections to output | |
9791 | sections. The linker does that before | |
9792 | adjust_dynamic_symbol is called, and it is that | |
9793 | function which decides whether anything needs to go | |
9794 | into these sections. */ | |
8423293d | 9795 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9796 | continue; |
9797 | } | |
9798 | ||
06bcf541 AM |
9799 | if (bfd_is_abs_section (s->output_section)) |
9800 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
9801 | s->name); | |
9802 | ||
c456f082 | 9803 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9804 | continue; |
9805 | ||
65f38f15 AM |
9806 | /* Allocate memory for the section contents. We use bfd_zalloc |
9807 | here in case unused entries are not reclaimed before the | |
9808 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9809 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9810 | sections instead of garbage. | |
9811 | We also rely on the section contents being zero when writing | |
5474d94f | 9812 | the GOT and .dynrelro. */ |
eea6121a | 9813 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9814 | if (s->contents == NULL) |
b34976b6 | 9815 | return FALSE; |
5bd4f169 AM |
9816 | } |
9817 | ||
c72f2fb2 | 9818 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 9819 | { |
0c8d6e5c | 9820 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9821 | continue; |
9822 | ||
e717da7e | 9823 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9824 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9825 | { |
eea6121a | 9826 | if (s->size == 0) |
8423293d | 9827 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9828 | else |
9829 | { | |
eea6121a | 9830 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9831 | if (s->contents == NULL) |
9832 | return FALSE; | |
9833 | } | |
9834 | } | |
9835 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9836 | if (s != NULL) | |
9837 | { | |
eea6121a | 9838 | if (s->size == 0) |
8423293d | 9839 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9840 | else |
9841 | { | |
eea6121a | 9842 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9843 | if (s->contents == NULL) |
9844 | return FALSE; | |
9845 | relocs = TRUE; | |
9846 | s->reloc_count = 0; | |
9847 | } | |
9848 | } | |
9849 | } | |
9850 | ||
e86ce104 | 9851 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9852 | { |
e8910a83 AM |
9853 | bfd_boolean tls_opt; |
9854 | ||
5bd4f169 AM |
9855 | /* Add some entries to the .dynamic section. We fill in the |
9856 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9857 | must add the entries now so that we get the correct size for | |
9858 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9859 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9860 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9861 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9862 | |
0e1862bb | 9863 | if (bfd_link_executable (info)) |
5bd4f169 | 9864 | { |
dc810e39 | 9865 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9866 | return FALSE; |
5bd4f169 AM |
9867 | } |
9868 | ||
33e44f2e | 9869 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 9870 | { |
dc810e39 AM |
9871 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9872 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9873 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9874 | || !add_dynamic_entry (DT_JMPREL, 0) |
9875 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9876 | return FALSE; |
5bd4f169 AM |
9877 | } |
9878 | ||
ee67d69a | 9879 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
9880 | { |
9881 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9882 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9883 | return FALSE; |
19397422 AM |
9884 | } |
9885 | ||
7c9cf415 | 9886 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
9887 | && htab->tls_get_addr_fd != NULL |
9888 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
9889 | if (tls_opt || !htab->opd_abi) | |
9890 | { | |
9891 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
9892 | return FALSE; | |
9893 | } | |
a7f2871e | 9894 | |
5bd4f169 AM |
9895 | if (relocs) |
9896 | { | |
dc810e39 AM |
9897 | if (!add_dynamic_entry (DT_RELA, 0) |
9898 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9899 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9900 | return FALSE; |
5bd4f169 | 9901 | |
65f38f15 AM |
9902 | /* If any dynamic relocs apply to a read-only section, |
9903 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9904 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 9905 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 9906 | |
65f38f15 | 9907 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9908 | { |
65f38f15 | 9909 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9910 | return FALSE; |
5bd4f169 | 9911 | } |
5bd4f169 | 9912 | } |
5bd4f169 | 9913 | } |
65f38f15 | 9914 | #undef add_dynamic_entry |
5bd4f169 | 9915 | |
b34976b6 | 9916 | return TRUE; |
5bd4f169 AM |
9917 | } |
9918 | ||
a345bc8d AM |
9919 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
9920 | ||
9921 | static bfd_boolean | |
9922 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
9923 | { | |
9924 | if (h->plt.plist != NULL | |
9925 | && !h->def_regular | |
9926 | && !h->pointer_equality_needed) | |
9927 | return FALSE; | |
9928 | ||
9929 | return _bfd_elf_hash_symbol (h); | |
9930 | } | |
9931 | ||
721956f4 | 9932 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9933 | |
4ce794b7 AM |
9934 | static inline enum ppc_stub_type |
9935 | ppc_type_of_stub (asection *input_sec, | |
9936 | const Elf_Internal_Rela *rel, | |
9937 | struct ppc_link_hash_entry **hash, | |
e054468f | 9938 | struct plt_entry **plt_ent, |
6911b7dc AM |
9939 | bfd_vma destination, |
9940 | unsigned long local_off) | |
5bd4f169 | 9941 | { |
721956f4 AM |
9942 | struct ppc_link_hash_entry *h = *hash; |
9943 | bfd_vma location; | |
9944 | bfd_vma branch_offset; | |
9945 | bfd_vma max_branch_offset; | |
4ce794b7 | 9946 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9947 | |
721956f4 AM |
9948 | if (h != NULL) |
9949 | { | |
e054468f | 9950 | struct plt_entry *ent; |
7fe2b9a6 | 9951 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9952 | if (h->oh != NULL |
9953 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9954 | { |
9955 | fdh = ppc_follow_link (h->oh); | |
9956 | *hash = fdh; | |
9957 | } | |
8387904d | 9958 | |
e054468f AM |
9959 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9960 | if (ent->addend == rel->r_addend | |
9961 | && ent->plt.offset != (bfd_vma) -1) | |
9962 | { | |
e054468f AM |
9963 | *plt_ent = ent; |
9964 | return ppc_stub_plt_call; | |
9965 | } | |
5bd4f169 | 9966 | |
7fe2b9a6 AM |
9967 | /* Here, we know we don't have a plt entry. If we don't have a |
9968 | either a defined function descriptor or a defined entry symbol | |
9969 | in a regular object file, then it is pointless trying to make | |
9970 | any other type of stub. */ | |
854b41e7 AM |
9971 | if (!is_static_defined (&fdh->elf) |
9972 | && !is_static_defined (&h->elf)) | |
721956f4 | 9973 | return ppc_stub_none; |
5d1634d7 | 9974 | } |
e054468f AM |
9975 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
9976 | { | |
9977 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
9978 | struct plt_entry **local_plt = (struct plt_entry **) | |
9979 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
9980 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
9981 | ||
9982 | if (local_plt[r_symndx] != NULL) | |
9983 | { | |
9984 | struct plt_entry *ent; | |
9985 | ||
9986 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
9987 | if (ent->addend == rel->r_addend | |
9988 | && ent->plt.offset != (bfd_vma) -1) | |
9989 | { | |
9990 | *plt_ent = ent; | |
9991 | return ppc_stub_plt_call; | |
9992 | } | |
9993 | } | |
9994 | } | |
5d1634d7 | 9995 | |
721956f4 AM |
9996 | /* Determine where the call point is. */ |
9997 | location = (input_sec->output_offset | |
9998 | + input_sec->output_section->vma | |
9999 | + rel->r_offset); | |
5d1634d7 | 10000 | |
721956f4 AM |
10001 | branch_offset = destination - location; |
10002 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10003 | |
721956f4 AM |
10004 | /* Determine if a long branch stub is needed. */ |
10005 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10006 | if (r_type == R_PPC64_REL14 |
10007 | || r_type == R_PPC64_REL14_BRTAKEN | |
10008 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10009 | max_branch_offset = 1 << 15; |
5d1634d7 | 10010 | |
6911b7dc | 10011 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10012 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10013 | is needed later. */ | |
10014 | return ppc_stub_long_branch; | |
5d1634d7 | 10015 | |
721956f4 | 10016 | return ppc_stub_none; |
5d1634d7 AM |
10017 | } |
10018 | ||
f891966f AM |
10019 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10020 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10021 | . mflr %r12 | |
10022 | . bcl 20,31,1f | |
10023 | .1: mflr %r11 | |
10024 | . mtlr %r12 | |
05d0e962 | 10025 | . lis %r12,xxx-1b@highest |
f891966f | 10026 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10027 | . sldi %r12,%r12,32 |
f891966f | 10028 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10029 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10030 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10031 | |
10032 | static bfd_byte * | |
10033 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10034 | { | |
f891966f AM |
10035 | bfd_put_32 (abfd, MFLR_R12, p); |
10036 | p += 4; | |
10037 | bfd_put_32 (abfd, BCL_20_31, p); | |
10038 | p += 4; | |
10039 | bfd_put_32 (abfd, MFLR_R11, p); | |
10040 | p += 4; | |
10041 | bfd_put_32 (abfd, MTLR_R12, p); | |
10042 | p += 4; | |
05d0e962 AM |
10043 | if (off + 0x8000 < 0x10000) |
10044 | { | |
10045 | if (load) | |
10046 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10047 | else | |
10048 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10049 | p += 4; | |
10050 | } | |
10051 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10052 | { | |
10053 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10054 | p += 4; | |
10055 | if (load) | |
10056 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10057 | else | |
10058 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10059 | p += 4; | |
10060 | } | |
10061 | else | |
10062 | { | |
10063 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10064 | { | |
10065 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10066 | p += 4; | |
10067 | } | |
10068 | else | |
10069 | { | |
10070 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10071 | p += 4; | |
10072 | if (((off >> 32) & 0xffff) != 0) | |
10073 | { | |
10074 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10075 | p += 4; | |
10076 | } | |
10077 | } | |
10078 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10079 | { | |
10080 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10081 | p += 4; | |
10082 | } | |
10083 | if (PPC_HI (off) != 0) | |
10084 | { | |
10085 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10086 | p += 4; | |
10087 | } | |
10088 | if (PPC_LO (off) != 0) | |
10089 | { | |
10090 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10091 | p += 4; | |
10092 | } | |
10093 | if (load) | |
10094 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10095 | else | |
10096 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10097 | p += 4; | |
10098 | } | |
10099 | return p; | |
10100 | } | |
10101 | ||
10102 | static unsigned int | |
10103 | size_offset (bfd_vma off) | |
10104 | { | |
10105 | unsigned int size; | |
10106 | if (off + 0x8000 < 0x10000) | |
10107 | size = 4; | |
10108 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10109 | size = 8; | |
10110 | else | |
10111 | { | |
10112 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10113 | size = 4; | |
10114 | else | |
10115 | { | |
10116 | size = 4; | |
10117 | if (((off >> 32) & 0xffff) != 0) | |
10118 | size += 4; | |
10119 | } | |
10120 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10121 | size += 4; | |
10122 | if (PPC_HI (off) != 0) | |
10123 | size += 4; | |
10124 | if (PPC_LO (off) != 0) | |
10125 | size += 4; | |
10126 | size += 4; | |
10127 | } | |
f891966f | 10128 | return size + 16; |
05d0e962 AM |
10129 | } |
10130 | ||
3d58e1fc AM |
10131 | static unsigned int |
10132 | num_relocs_for_offset (bfd_vma off) | |
10133 | { | |
10134 | unsigned int num_rel; | |
10135 | if (off + 0x8000 < 0x10000) | |
10136 | num_rel = 1; | |
10137 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10138 | num_rel = 2; | |
10139 | else | |
10140 | { | |
10141 | num_rel = 1; | |
10142 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10143 | && ((off >> 32) & 0xffff) != 0) | |
10144 | num_rel += 1; | |
10145 | if (PPC_HI (off) != 0) | |
10146 | num_rel += 1; | |
10147 | if (PPC_LO (off) != 0) | |
10148 | num_rel += 1; | |
10149 | } | |
10150 | return num_rel; | |
10151 | } | |
10152 | ||
10153 | static Elf_Internal_Rela * | |
10154 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10155 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10156 | { | |
10157 | bfd_vma relative_targ = targ - (roff - 8); | |
10158 | if (bfd_big_endian (info->output_bfd)) | |
10159 | roff += 2; | |
10160 | r->r_offset = roff; | |
10161 | r->r_addend = relative_targ + roff; | |
10162 | if (off + 0x8000 < 0x10000) | |
10163 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10164 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10165 | { | |
10166 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10167 | ++r; | |
10168 | roff += 4; | |
10169 | r->r_offset = roff; | |
10170 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10171 | r->r_addend = relative_targ + roff; | |
10172 | } | |
10173 | else | |
10174 | { | |
10175 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10176 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10177 | else | |
10178 | { | |
10179 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10180 | if (((off >> 32) & 0xffff) != 0) | |
10181 | { | |
10182 | ++r; | |
10183 | roff += 4; | |
10184 | r->r_offset = roff; | |
10185 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10186 | r->r_addend = relative_targ + roff; | |
10187 | } | |
10188 | } | |
10189 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10190 | roff += 4; | |
10191 | if (PPC_HI (off) != 0) | |
10192 | { | |
10193 | ++r; | |
10194 | roff += 4; | |
10195 | r->r_offset = roff; | |
10196 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10197 | r->r_addend = relative_targ + roff; | |
10198 | } | |
10199 | if (PPC_LO (off) != 0) | |
10200 | { | |
10201 | ++r; | |
10202 | roff += 4; | |
10203 | r->r_offset = roff; | |
10204 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10205 | r->r_addend = relative_targ + roff; | |
10206 | } | |
10207 | } | |
10208 | return r; | |
10209 | } | |
10210 | ||
df136d64 AM |
10211 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10212 | ||
10213 | static bfd_byte * | |
10214 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10215 | { | |
10216 | delta /= 4; | |
10217 | if (delta < 64) | |
10218 | *eh++ = DW_CFA_advance_loc + delta; | |
10219 | else if (delta < 256) | |
10220 | { | |
10221 | *eh++ = DW_CFA_advance_loc1; | |
10222 | *eh++ = delta; | |
10223 | } | |
10224 | else if (delta < 65536) | |
10225 | { | |
10226 | *eh++ = DW_CFA_advance_loc2; | |
10227 | bfd_put_16 (abfd, delta, eh); | |
10228 | eh += 2; | |
10229 | } | |
10230 | else | |
10231 | { | |
10232 | *eh++ = DW_CFA_advance_loc4; | |
10233 | bfd_put_32 (abfd, delta, eh); | |
10234 | eh += 4; | |
10235 | } | |
10236 | return eh; | |
10237 | } | |
10238 | ||
10239 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10240 | ||
10241 | static unsigned int | |
10242 | eh_advance_size (unsigned int delta) | |
10243 | { | |
10244 | if (delta < 64 * 4) | |
10245 | /* DW_CFA_advance_loc+[1..63]. */ | |
10246 | return 1; | |
10247 | if (delta < 256 * 4) | |
10248 | /* DW_CFA_advance_loc1, byte. */ | |
10249 | return 2; | |
10250 | if (delta < 65536 * 4) | |
10251 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10252 | return 3; | |
10253 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10254 | return 5; | |
10255 | } | |
10256 | ||
794e51c0 AM |
10257 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10258 | to update a plt entry in one thread and have another thread see a | |
10259 | stale zero toc entry. To avoid this we need some sort of acquire | |
10260 | barrier in the call stub. One solution is to make the load of the | |
10261 | toc word seem to appear to depend on the load of the function entry | |
10262 | word. Another solution is to test for r2 being zero, and branch to | |
10263 | the appropriate glink entry if so. | |
10264 | ||
10265 | . fake dep barrier compare | |
71a39c98 AM |
10266 | . ld 12,xxx(2) ld 12,xxx(2) |
10267 | . mtctr 12 mtctr 12 | |
10268 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10269 | . add 2,2,11 cmpldi 2,0 |
10270 | . ld 2,xxx+8(2) bnectr+ | |
10271 | . bctr b <glink_entry> | |
10272 | ||
10273 | The solution involving the compare turns out to be faster, so | |
10274 | that's what we use unless the branch won't reach. */ | |
10275 | ||
10276 | #define ALWAYS_USE_FAKE_DEP 0 | |
10277 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10278 | |
794e51c0 AM |
10279 | static inline unsigned int |
10280 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10281 | struct ppc_stub_hash_entry *stub_entry, | |
10282 | bfd_vma off) | |
10283 | { | |
05d0e962 | 10284 | unsigned size; |
b9e5796b | 10285 | |
05d0e962 AM |
10286 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10287 | { | |
f891966f | 10288 | size = 8 + size_offset (off - 8); |
05d0e962 AM |
10289 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10290 | size += 4; | |
10291 | return size; | |
10292 | } | |
10293 | ||
10294 | size = 12; | |
b9e5796b AM |
10295 | if (ALWAYS_EMIT_R2SAVE |
10296 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10297 | size += 4; | |
10298 | if (PPC_HA (off) != 0) | |
794e51c0 | 10299 | size += 4; |
b9e5796b AM |
10300 | if (htab->opd_abi) |
10301 | { | |
10302 | size += 4; | |
e7d1c40c | 10303 | if (htab->params->plt_static_chain) |
b9e5796b | 10304 | size += 4; |
bd4d2eaa AM |
10305 | if (htab->params->plt_thread_safe |
10306 | && htab->elf.dynamic_sections_created | |
10307 | && stub_entry->h != NULL | |
10308 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10309 | size += 8; |
e7d1c40c | 10310 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10311 | size += 4; |
10312 | } | |
794e51c0 AM |
10313 | if (stub_entry->h != NULL |
10314 | && (stub_entry->h == htab->tls_get_addr_fd | |
10315 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10316 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
10317 | { |
10318 | size += 7 * 4; | |
e81b4c93 | 10319 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) |
407aa07c | 10320 | size += 6 * 4; |
f378ab09 | 10321 | } |
794e51c0 AM |
10322 | return size; |
10323 | } | |
10324 | ||
2420fff6 AM |
10325 | /* Depending on the sign of plt_stub_align: |
10326 | If positive, return the padding to align to a 2**plt_stub_align | |
10327 | boundary. | |
10328 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10329 | boundaries if we align, then return the padding needed to do so. */ | |
10330 | ||
794e51c0 AM |
10331 | static inline unsigned int |
10332 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10333 | struct ppc_stub_hash_entry *stub_entry, | |
10334 | bfd_vma plt_off) | |
10335 | { | |
2420fff6 | 10336 | int stub_align; |
1aa42141 | 10337 | unsigned stub_size; |
6f20ed8a | 10338 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10339 | |
2420fff6 AM |
10340 | if (htab->params->plt_stub_align >= 0) |
10341 | { | |
10342 | stub_align = 1 << htab->params->plt_stub_align; | |
10343 | if ((stub_off & (stub_align - 1)) != 0) | |
10344 | return stub_align - (stub_off & (stub_align - 1)); | |
10345 | return 0; | |
10346 | } | |
10347 | ||
10348 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 10349 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 10350 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10351 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10352 | return stub_align - (stub_off & (stub_align - 1)); |
10353 | return 0; | |
10354 | } | |
10355 | ||
10356 | /* Build a .plt call stub. */ | |
10357 | ||
10358 | static inline bfd_byte * | |
10359 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10360 | struct ppc_stub_hash_entry *stub_entry, | |
10361 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10362 | { | |
e7d1c40c | 10363 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10364 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10365 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10366 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10367 | && htab->elf.dynamic_sections_created | |
10368 | && stub_entry->h != NULL | |
10369 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10370 | bfd_boolean use_fake_dep = plt_thread_safe; |
10371 | bfd_vma cmp_branch_off = 0; | |
10372 | ||
10373 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10374 | && plt_load_toc |
794e51c0 | 10375 | && plt_thread_safe |
bd4d2eaa AM |
10376 | && !((stub_entry->h == htab->tls_get_addr_fd |
10377 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10378 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10379 | { |
10380 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10381 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10382 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10383 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10384 | bfd_vma to, from; |
10385 | ||
68d62958 AM |
10386 | if (pltindex > 32768) |
10387 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10388 | to = (glinkoff |
10389 | + htab->glink->output_offset | |
10390 | + htab->glink->output_section->vma); | |
6f20ed8a | 10391 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10392 | + 4 * (ALWAYS_EMIT_R2SAVE |
10393 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10394 | + 4 * (PPC_HA (offset) != 0) | |
10395 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10396 | != PPC_HA (offset)) | |
10397 | + 4 * (plt_static_chain != 0) | |
10398 | + 20 | |
6f20ed8a AM |
10399 | + stub_entry->group->stub_sec->output_offset |
10400 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10401 | cmp_branch_off = to - from; |
10402 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10403 | } | |
10404 | ||
ac2df442 AM |
10405 | if (PPC_HA (offset) != 0) |
10406 | { | |
176a0d42 AM |
10407 | if (r != NULL) |
10408 | { | |
794e51c0 AM |
10409 | if (ALWAYS_EMIT_R2SAVE |
10410 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10411 | r[0].r_offset += 4; | |
176a0d42 | 10412 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10413 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10414 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10415 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10416 | if (plt_load_toc) |
176a0d42 | 10417 | { |
b9e5796b | 10418 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10419 | { |
b9e5796b AM |
10420 | r[2].r_offset = r[1].r_offset + 4; |
10421 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10422 | r[2].r_addend = r[0].r_addend; | |
10423 | } | |
10424 | else | |
10425 | { | |
10426 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10427 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10428 | r[2].r_addend = r[0].r_addend + 8; | |
10429 | if (plt_static_chain) | |
10430 | { | |
10431 | r[3].r_offset = r[2].r_offset + 4; | |
10432 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10433 | r[3].r_addend = r[0].r_addend + 16; | |
10434 | } | |
c7131b65 | 10435 | } |
176a0d42 AM |
10436 | } |
10437 | } | |
794e51c0 AM |
10438 | if (ALWAYS_EMIT_R2SAVE |
10439 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10440 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10441 | if (plt_load_toc) |
10442 | { | |
10443 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10444 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10445 | } | |
10446 | else | |
10447 | { | |
10448 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10449 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10450 | } | |
b9e5796b AM |
10451 | if (plt_load_toc |
10452 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10453 | { |
71a39c98 | 10454 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10455 | offset = 0; |
10456 | } | |
71a39c98 | 10457 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10458 | if (plt_load_toc) |
794e51c0 | 10459 | { |
b9e5796b AM |
10460 | if (use_fake_dep) |
10461 | { | |
10462 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10463 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10464 | } | |
10465 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10466 | if (plt_static_chain) | |
10467 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10468 | } |
ac2df442 AM |
10469 | } |
10470 | else | |
10471 | { | |
176a0d42 AM |
10472 | if (r != NULL) |
10473 | { | |
794e51c0 AM |
10474 | if (ALWAYS_EMIT_R2SAVE |
10475 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10476 | r[0].r_offset += 4; | |
176a0d42 | 10477 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10478 | if (plt_load_toc) |
176a0d42 | 10479 | { |
b9e5796b | 10480 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10481 | { |
b9e5796b AM |
10482 | r[1].r_offset = r[0].r_offset + 4; |
10483 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10484 | r[1].r_addend = r[0].r_addend; | |
10485 | } | |
10486 | else | |
10487 | { | |
10488 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10489 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10490 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10491 | if (plt_static_chain) | |
10492 | { | |
10493 | r[2].r_offset = r[1].r_offset + 4; | |
10494 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10495 | r[2].r_addend = r[0].r_addend + 8; | |
10496 | } | |
c7131b65 | 10497 | } |
176a0d42 AM |
10498 | } |
10499 | } | |
794e51c0 AM |
10500 | if (ALWAYS_EMIT_R2SAVE |
10501 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10502 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10503 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10504 | if (plt_load_toc |
10505 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10506 | { |
10507 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10508 | offset = 0; | |
10509 | } | |
71a39c98 | 10510 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10511 | if (plt_load_toc) |
794e51c0 | 10512 | { |
b9e5796b AM |
10513 | if (use_fake_dep) |
10514 | { | |
10515 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10516 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10517 | } | |
10518 | if (plt_static_chain) | |
10519 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10520 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10521 | } |
ac2df442 | 10522 | } |
b9e5796b | 10523 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10524 | { |
10525 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10526 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10527 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10528 | } |
10529 | else | |
407aa07c | 10530 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
10531 | return p; |
10532 | } | |
10533 | ||
a7f2871e AM |
10534 | /* Build a special .plt call stub for __tls_get_addr. */ |
10535 | ||
10536 | #define LD_R11_0R3 0xe9630000 | |
10537 | #define LD_R12_0R3 0xe9830000 | |
10538 | #define MR_R0_R3 0x7c601b78 | |
10539 | #define CMPDI_R11_0 0x2c2b0000 | |
10540 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10541 | #define BEQLR 0x4d820020 | |
10542 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10543 | #define STD_R11_0R1 0xf9610000 |
10544 | #define BCTRL 0x4e800421 | |
10545 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10546 | #define MTLR_R11 0x7d6803a6 |
10547 | ||
10548 | static inline bfd_byte * | |
794e51c0 AM |
10549 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10550 | struct ppc_stub_hash_entry *stub_entry, | |
10551 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10552 | { |
e7d1c40c | 10553 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 10554 | bfd_byte *loc = p; |
794e51c0 | 10555 | |
a7f2871e AM |
10556 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10557 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10558 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10559 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10560 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10561 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10562 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
10563 | if (r != NULL) |
10564 | r[0].r_offset += 7 * 4; | |
e81b4c93 | 10565 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) |
f378ab09 AM |
10566 | return build_plt_stub (htab, stub_entry, p, offset, r); |
10567 | ||
a7f2871e | 10568 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 10569 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10570 | |
10571 | if (r != NULL) | |
f378ab09 | 10572 | r[0].r_offset += 2 * 4; |
794e51c0 | 10573 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 10574 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 10575 | |
a078d95a | 10576 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 10577 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10578 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10579 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10580 | ||
df136d64 AM |
10581 | if (htab->glink_eh_frame != NULL |
10582 | && htab->glink_eh_frame->size != 0) | |
10583 | { | |
10584 | bfd_byte *base, *eh; | |
10585 | unsigned int lr_used, delta; | |
10586 | ||
10587 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
10588 | eh = base + stub_entry->group->eh_size; | |
10589 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
10590 | delta = lr_used - stub_entry->group->lr_restore; | |
10591 | stub_entry->group->lr_restore = lr_used + 16; | |
10592 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
10593 | *eh++ = DW_CFA_offset_extended_sf; | |
10594 | *eh++ = 65; | |
10595 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
10596 | *eh++ = DW_CFA_advance_loc + 4; | |
10597 | *eh++ = DW_CFA_restore_extended; | |
10598 | *eh++ = 65; | |
10599 | stub_entry->group->eh_size = eh - base; | |
10600 | } | |
a7f2871e AM |
10601 | return p; |
10602 | } | |
10603 | ||
176a0d42 AM |
10604 | static Elf_Internal_Rela * |
10605 | get_relocs (asection *sec, int count) | |
10606 | { | |
10607 | Elf_Internal_Rela *relocs; | |
10608 | struct bfd_elf_section_data *elfsec_data; | |
10609 | ||
10610 | elfsec_data = elf_section_data (sec); | |
10611 | relocs = elfsec_data->relocs; | |
10612 | if (relocs == NULL) | |
10613 | { | |
10614 | bfd_size_type relsize; | |
10615 | relsize = sec->reloc_count * sizeof (*relocs); | |
10616 | relocs = bfd_alloc (sec->owner, relsize); | |
10617 | if (relocs == NULL) | |
10618 | return NULL; | |
10619 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10620 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10621 | sizeof (Elf_Internal_Shdr)); | |
10622 | if (elfsec_data->rela.hdr == NULL) | |
10623 | return NULL; | |
10624 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10625 | * sizeof (Elf64_External_Rela)); | |
10626 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10627 | sec->reloc_count = 0; |
10628 | } | |
10629 | relocs += sec->reloc_count; | |
10630 | sec->reloc_count += count; | |
10631 | return relocs; | |
10632 | } | |
10633 | ||
3d58e1fc AM |
10634 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
10635 | forms, to the equivalent relocs against the global symbol given by | |
10636 | STUB_ENTRY->H. */ | |
10637 | ||
10638 | static bfd_boolean | |
10639 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
10640 | struct ppc_stub_hash_entry *stub_entry, | |
10641 | Elf_Internal_Rela *r, unsigned int num_rel) | |
10642 | { | |
10643 | struct elf_link_hash_entry **hashes; | |
10644 | unsigned long symndx; | |
10645 | struct ppc_link_hash_entry *h; | |
10646 | bfd_vma symval; | |
10647 | ||
10648 | /* Relocs are always against symbols in their own object file. Fake | |
10649 | up global sym hashes for the stub bfd (which has no symbols). */ | |
10650 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
10651 | if (hashes == NULL) | |
10652 | { | |
10653 | bfd_size_type hsize; | |
10654 | ||
10655 | /* When called the first time, stub_globals will contain the | |
10656 | total number of symbols seen during stub sizing. After | |
10657 | allocating, stub_globals is used as an index to fill the | |
10658 | hashes array. */ | |
10659 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
10660 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
10661 | if (hashes == NULL) | |
10662 | return FALSE; | |
10663 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
10664 | htab->stub_globals = 1; | |
10665 | } | |
10666 | symndx = htab->stub_globals++; | |
10667 | h = stub_entry->h; | |
10668 | hashes[symndx] = &h->elf; | |
10669 | if (h->oh != NULL && h->oh->is_func) | |
10670 | h = ppc_follow_link (h->oh); | |
10671 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
10672 | || h->elf.root.type == bfd_link_hash_defweak); | |
10673 | symval = (h->elf.root.u.def.value | |
10674 | + h->elf.root.u.def.section->output_offset | |
10675 | + h->elf.root.u.def.section->output_section->vma); | |
10676 | while (num_rel-- != 0) | |
10677 | { | |
10678 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
10679 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
10680 | { | |
10681 | /* H is an opd symbol. The addend must be zero, and the | |
10682 | branch reloc is the only one we can convert. */ | |
10683 | r->r_addend = 0; | |
10684 | break; | |
10685 | } | |
10686 | else | |
10687 | r->r_addend -= symval; | |
10688 | --r; | |
10689 | } | |
10690 | return TRUE; | |
10691 | } | |
10692 | ||
aa374f67 | 10693 | static bfd_vma |
25f53a85 | 10694 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10695 | struct ppc_stub_hash_entry *stub_entry) |
10696 | { | |
25f53a85 | 10697 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 10698 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
10699 | |
10700 | if (r2off == 0) | |
10701 | { | |
10702 | /* Support linking -R objects. Get the toc pointer from the | |
10703 | opd entry. */ | |
10704 | char buf[8]; | |
b9e5796b AM |
10705 | if (!htab->opd_abi) |
10706 | return r2off; | |
aa374f67 AM |
10707 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10708 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10709 | ||
10710 | if (strcmp (opd->name, ".opd") != 0 | |
10711 | || opd->reloc_count != 0) | |
10712 | { | |
2cdcc330 AM |
10713 | info->callbacks->einfo |
10714 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
10715 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 10716 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 10717 | return (bfd_vma) -1; |
aa374f67 AM |
10718 | } |
10719 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 10720 | return (bfd_vma) -1; |
aa374f67 | 10721 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 10722 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 10723 | } |
6f20ed8a | 10724 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
10725 | return r2off; |
10726 | } | |
10727 | ||
b34976b6 | 10728 | static bfd_boolean |
4ce794b7 | 10729 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10730 | { |
721956f4 AM |
10731 | struct ppc_stub_hash_entry *stub_entry; |
10732 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10733 | struct bfd_link_info *info; |
10734 | struct ppc_link_hash_table *htab; | |
721956f4 | 10735 | bfd_byte *loc; |
3d58e1fc | 10736 | bfd_byte *p, *relp; |
1aa42141 | 10737 | bfd_vma targ, off; |
176a0d42 | 10738 | Elf_Internal_Rela *r; |
e054468f | 10739 | asection *plt; |
3d58e1fc | 10740 | int num_rel; |
5d1634d7 | 10741 | |
721956f4 AM |
10742 | /* Massage our args to the form they really have. */ |
10743 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10744 | info = in_arg; |
5d1634d7 | 10745 | |
5d1634d7 | 10746 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10747 | if (htab == NULL) |
10748 | return FALSE; | |
5d1634d7 | 10749 | |
1aa42141 | 10750 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 10751 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10752 | |
4ce794b7 | 10753 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10754 | switch (stub_entry->stub_type) |
5d1634d7 | 10755 | { |
721956f4 | 10756 | case ppc_stub_long_branch: |
ad8e1ba5 | 10757 | case ppc_stub_long_branch_r2off: |
721956f4 | 10758 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 10759 | targ = (stub_entry->target_value |
6911b7dc AM |
10760 | + stub_entry->target_section->output_offset |
10761 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 10762 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 10763 | |
721956f4 | 10764 | /* And this is where we are coming from. */ |
1aa42141 AM |
10765 | off = (stub_entry->stub_offset |
10766 | + stub_entry->group->stub_sec->output_offset | |
10767 | + stub_entry->group->stub_sec->output_section->vma); | |
10768 | off = targ - off; | |
e86ce104 | 10769 | |
9e390558 | 10770 | p = loc; |
ac2df442 | 10771 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 10772 | { |
25f53a85 | 10773 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10774 | |
a7c49797 | 10775 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10776 | { |
10777 | htab->stub_error = TRUE; | |
10778 | return FALSE; | |
10779 | } | |
9e390558 AM |
10780 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
10781 | p += 4; | |
ac2df442 AM |
10782 | if (PPC_HA (r2off) != 0) |
10783 | { | |
e7d1c40c | 10784 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10785 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
10786 | p += 4; | |
a7c49797 AM |
10787 | } |
10788 | if (PPC_LO (r2off) != 0) | |
10789 | { | |
10790 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
10791 | ADDI_R2_R2 | PPC_LO (r2off), p); |
10792 | p += 4; | |
ac2df442 | 10793 | } |
9e390558 | 10794 | off -= p - loc; |
ad8e1ba5 | 10795 | } |
9e390558 AM |
10796 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
10797 | p += 4; | |
ad8e1ba5 | 10798 | |
5c3dead3 AM |
10799 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10800 | { | |
cf97bcb0 AM |
10801 | _bfd_error_handler |
10802 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 10803 | stub_entry->root.string); |
5c3dead3 AM |
10804 | htab->stub_error = TRUE; |
10805 | return FALSE; | |
10806 | } | |
ee75fd95 AM |
10807 | |
10808 | if (info->emitrelocations) | |
10809 | { | |
6f20ed8a | 10810 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
10811 | if (r == NULL) |
10812 | return FALSE; | |
9e390558 | 10813 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 10814 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 10815 | r->r_addend = targ; |
3d58e1fc AM |
10816 | if (stub_entry->h != NULL |
10817 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
10818 | return FALSE; | |
ee75fd95 | 10819 | } |
721956f4 | 10820 | break; |
e86ce104 | 10821 | |
721956f4 | 10822 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10823 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10824 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10825 | stub_entry->root.string + 9, | |
b34976b6 | 10826 | FALSE, FALSE); |
721956f4 AM |
10827 | if (br_entry == NULL) |
10828 | { | |
cf97bcb0 AM |
10829 | _bfd_error_handler (_("can't find branch stub `%s'"), |
10830 | stub_entry->root.string); | |
b34976b6 AM |
10831 | htab->stub_error = TRUE; |
10832 | return FALSE; | |
721956f4 AM |
10833 | } |
10834 | ||
1aa42141 | 10835 | targ = (stub_entry->target_value |
176a0d42 AM |
10836 | + stub_entry->target_section->output_offset |
10837 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 10838 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 10839 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 10840 | |
1aa42141 | 10841 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 10842 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10843 | |
f94498ff | 10844 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10845 | { |
f94498ff | 10846 | br_entry->iter = 0; |
84f5d08e | 10847 | |
f94498ff | 10848 | if (htab->relbrlt != NULL) |
84f5d08e | 10849 | { |
f94498ff AM |
10850 | /* Create a reloc for the branch lookup table entry. */ |
10851 | Elf_Internal_Rela rela; | |
10852 | bfd_byte *rl; | |
10853 | ||
10854 | rela.r_offset = (br_entry->offset | |
10855 | + htab->brlt->output_offset | |
10856 | + htab->brlt->output_section->vma); | |
10857 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 10858 | rela.r_addend = targ; |
f94498ff AM |
10859 | |
10860 | rl = htab->relbrlt->contents; | |
10861 | rl += (htab->relbrlt->reloc_count++ | |
10862 | * sizeof (Elf64_External_Rela)); | |
10863 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10864 | } | |
10865 | else if (info->emitrelocations) | |
10866 | { | |
176a0d42 AM |
10867 | r = get_relocs (htab->brlt, 1); |
10868 | if (r == NULL) | |
10869 | return FALSE; | |
10870 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10871 | normal reloc processing. Symbols and offsets are not | |
10872 | translated from input file to output file form, so | |
10873 | set up the offset per the output file. */ | |
f94498ff AM |
10874 | r->r_offset = (br_entry->offset |
10875 | + htab->brlt->output_offset | |
10876 | + htab->brlt->output_section->vma); | |
10877 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 10878 | r->r_addend = targ; |
84f5d08e | 10879 | } |
84f5d08e | 10880 | } |
721956f4 | 10881 | |
1aa42141 | 10882 | targ = (br_entry->offset |
176a0d42 AM |
10883 | + htab->brlt->output_offset |
10884 | + htab->brlt->output_section->vma); | |
10885 | ||
1aa42141 AM |
10886 | off = (elf_gp (info->output_bfd) |
10887 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
10888 | off = targ - off; | |
721956f4 | 10889 | |
ad8e1ba5 | 10890 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10891 | { |
25f53a85 | 10892 | info->callbacks->einfo |
c1c8c1ef | 10893 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 10894 | stub_entry->root.string); |
5d1634d7 | 10895 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10896 | htab->stub_error = TRUE; |
10897 | return FALSE; | |
5d1634d7 | 10898 | } |
41bd81ab | 10899 | |
176a0d42 AM |
10900 | if (info->emitrelocations) |
10901 | { | |
6f20ed8a | 10902 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
10903 | if (r == NULL) |
10904 | return FALSE; | |
6f20ed8a | 10905 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
10906 | if (bfd_big_endian (info->output_bfd)) |
10907 | r[0].r_offset += 2; | |
00f412ee | 10908 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10909 | r[0].r_offset += 4; |
10910 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 10911 | r[0].r_addend = targ; |
176a0d42 AM |
10912 | if (PPC_HA (off) != 0) |
10913 | { | |
10914 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10915 | r[1].r_offset = r[0].r_offset + 4; | |
10916 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10917 | r[1].r_addend = r[0].r_addend; | |
10918 | } | |
10919 | } | |
10920 | ||
9e390558 | 10921 | p = loc; |
00f412ee | 10922 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10923 | { |
176a0d42 | 10924 | if (PPC_HA (off) != 0) |
ac2df442 | 10925 | { |
e7d1c40c | 10926 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10927 | ADDIS_R12_R2 | PPC_HA (off), p); |
10928 | p += 4; | |
e7d1c40c | 10929 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10930 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
10931 | } |
10932 | else | |
9e390558 AM |
10933 | bfd_put_32 (htab->params->stub_bfd, |
10934 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
10935 | } |
10936 | else | |
10937 | { | |
25f53a85 | 10938 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10939 | |
a7c49797 | 10940 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10941 | { |
10942 | htab->stub_error = TRUE; | |
10943 | return FALSE; | |
10944 | } | |
ad8e1ba5 | 10945 | |
9e390558 AM |
10946 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
10947 | p += 4; | |
176a0d42 | 10948 | if (PPC_HA (off) != 0) |
ac2df442 | 10949 | { |
e7d1c40c | 10950 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10951 | ADDIS_R12_R2 | PPC_HA (off), p); |
10952 | p += 4; | |
e7d1c40c | 10953 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10954 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
10955 | } |
10956 | else | |
9e390558 | 10957 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
10958 | |
10959 | if (PPC_HA (r2off) != 0) | |
10960 | { | |
9e390558 | 10961 | p += 4; |
e7d1c40c | 10962 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10963 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
10964 | } |
10965 | if (PPC_LO (r2off) != 0) | |
10966 | { | |
9e390558 | 10967 | p += 4; |
e7d1c40c | 10968 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10969 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 10970 | } |
ad8e1ba5 | 10971 | } |
9e390558 AM |
10972 | p += 4; |
10973 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
10974 | p += 4; | |
407aa07c AM |
10975 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
10976 | p += 4; | |
721956f4 | 10977 | break; |
5d1634d7 | 10978 | |
05d0e962 AM |
10979 | case ppc_stub_long_branch_notoc: |
10980 | case ppc_stub_long_branch_both: | |
10981 | case ppc_stub_plt_branch_notoc: | |
10982 | case ppc_stub_plt_branch_both: | |
10983 | case ppc_stub_plt_call_notoc: | |
10984 | case ppc_stub_plt_call_both: | |
10985 | p = loc; | |
f891966f | 10986 | off = (stub_entry->stub_offset |
05d0e962 AM |
10987 | + stub_entry->group->stub_sec->output_offset |
10988 | + stub_entry->group->stub_sec->output_section->vma); | |
10989 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
10990 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
10991 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10992 | { | |
10993 | off += 4; | |
10994 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
10995 | p += 4; | |
10996 | } | |
10997 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
10998 | { | |
10999 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11000 | if (targ >= (bfd_vma) -2) | |
11001 | abort (); | |
11002 | ||
11003 | plt = htab->elf.splt; | |
11004 | if (!htab->elf.dynamic_sections_created | |
11005 | || stub_entry->h == NULL | |
11006 | || stub_entry->h->elf.dynindx == -1) | |
11007 | { | |
11008 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11009 | plt = htab->elf.iplt; | |
11010 | else | |
11011 | plt = htab->pltlocal; | |
11012 | } | |
11013 | targ += plt->output_offset + plt->output_section->vma; | |
11014 | } | |
11015 | else | |
11016 | targ = (stub_entry->target_value | |
11017 | + stub_entry->target_section->output_offset | |
11018 | + stub_entry->target_section->output_section->vma); | |
11019 | off = targ - off; | |
f891966f | 11020 | |
3d58e1fc AM |
11021 | relp = p; |
11022 | num_rel = 0; | |
f891966f AM |
11023 | /* The notoc stubs calculate their target (either a PLT entry or |
11024 | the global entry point of a function) relative to the PC | |
11025 | returned by the "bcl" two instructions past the start of the | |
11026 | sequence emitted by build_offset. The offset is therefore 8 | |
11027 | less than calculated from the start of the sequence. */ | |
11028 | off -= 8; | |
05d0e962 AM |
11029 | p = build_offset (htab->params->stub_bfd, p, off, |
11030 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
f891966f | 11031 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11032 | { |
f891966f | 11033 | bfd_vma from; |
3d58e1fc | 11034 | num_rel = 1; |
f891966f AM |
11035 | from = (stub_entry->stub_offset |
11036 | + stub_entry->group->stub_sec->output_offset | |
11037 | + stub_entry->group->stub_sec->output_section->vma | |
11038 | + (p - loc)); | |
05d0e962 | 11039 | bfd_put_32 (htab->params->stub_bfd, |
f891966f | 11040 | B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11041 | } |
11042 | else | |
11043 | { | |
11044 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11045 | p += 4; | |
11046 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
11047 | } | |
11048 | p += 4; | |
df136d64 | 11049 | |
3d58e1fc AM |
11050 | if (info->emitrelocations) |
11051 | { | |
11052 | bfd_vma roff; | |
11053 | num_rel += num_relocs_for_offset (off); | |
11054 | r = get_relocs (stub_entry->group->stub_sec, num_rel); | |
11055 | if (r == NULL) | |
11056 | return FALSE; | |
11057 | roff = relp + 16 - stub_entry->group->stub_sec->contents; | |
11058 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
11059 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
11060 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11061 | { | |
11062 | ++r; | |
11063 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11064 | r->r_offset = roff; | |
11065 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11066 | r->r_addend = targ; | |
11067 | if (stub_entry->h != NULL | |
11068 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
11069 | return FALSE; | |
11070 | } | |
11071 | } | |
11072 | ||
df136d64 AM |
11073 | if (htab->glink_eh_frame != NULL |
11074 | && htab->glink_eh_frame->size != 0) | |
11075 | { | |
11076 | bfd_byte *base, *eh; | |
11077 | unsigned int lr_used, delta; | |
11078 | ||
11079 | base = (htab->glink_eh_frame->contents | |
11080 | + stub_entry->group->eh_base + 17); | |
11081 | eh = base + stub_entry->group->eh_size; | |
11082 | lr_used = stub_entry->stub_offset + 8; | |
11083 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11084 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11085 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11086 | lr_used += 4; | |
11087 | delta = lr_used - stub_entry->group->lr_restore; | |
11088 | stub_entry->group->lr_restore = lr_used + 8; | |
11089 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11090 | *eh++ = DW_CFA_register; | |
11091 | *eh++ = 65; | |
11092 | *eh++ = 12; | |
11093 | *eh++ = DW_CFA_advance_loc + 2; | |
11094 | *eh++ = DW_CFA_restore_extended; | |
11095 | *eh++ = 65; | |
11096 | stub_entry->group->eh_size = eh - base; | |
11097 | } | |
05d0e962 AM |
11098 | break; |
11099 | ||
721956f4 | 11100 | case ppc_stub_plt_call: |
794e51c0 | 11101 | case ppc_stub_plt_call_r2save: |
e054468f | 11102 | if (stub_entry->h != NULL |
b31867b6 AM |
11103 | && stub_entry->h->is_func_descriptor |
11104 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11105 | { |
b31867b6 AM |
11106 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11107 | ||
11108 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11109 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11110 | if (fh->elf.root.type == bfd_link_hash_undefined |
11111 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11112 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11113 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11114 | } |
11115 | ||
721956f4 | 11116 | /* Now build the stub. */ |
1aa42141 AM |
11117 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11118 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11119 | abort (); |
11120 | ||
33e44f2e | 11121 | plt = htab->elf.splt; |
25f23106 AM |
11122 | if (!htab->elf.dynamic_sections_created |
11123 | || stub_entry->h == NULL | |
11124 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11125 | { |
11126 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11127 | plt = htab->elf.iplt; | |
11128 | else | |
11129 | plt = htab->pltlocal; | |
11130 | } | |
1aa42141 | 11131 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11132 | |
1aa42141 AM |
11133 | off = (elf_gp (info->output_bfd) |
11134 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11135 | off = targ - off; | |
721956f4 | 11136 | |
ad8e1ba5 | 11137 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11138 | { |
25f53a85 | 11139 | info->callbacks->einfo |
695344c0 | 11140 | /* xgettext:c-format */ |
c1c8c1ef | 11141 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11142 | stub_entry->h != NULL |
11143 | ? stub_entry->h->elf.root.root.string | |
11144 | : "<local sym>"); | |
721956f4 | 11145 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11146 | htab->stub_error = TRUE; |
11147 | return FALSE; | |
721956f4 AM |
11148 | } |
11149 | ||
176a0d42 AM |
11150 | r = NULL; |
11151 | if (info->emitrelocations) | |
11152 | { | |
6f20ed8a | 11153 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11154 | ((PPC_HA (off) != 0) |
11155 | + (htab->opd_abi | |
e7d1c40c | 11156 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11157 | && PPC_HA (off + 16) == PPC_HA (off)) |
11158 | : 1))); | |
176a0d42 AM |
11159 | if (r == NULL) |
11160 | return FALSE; | |
6f20ed8a | 11161 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11162 | if (bfd_big_endian (info->output_bfd)) |
11163 | r[0].r_offset += 2; | |
1aa42141 | 11164 | r[0].r_addend = targ; |
176a0d42 | 11165 | } |
a7f2871e AM |
11166 | if (stub_entry->h != NULL |
11167 | && (stub_entry->h == htab->tls_get_addr_fd | |
11168 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11169 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11170 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11171 | else |
794e51c0 | 11172 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11173 | break; |
11174 | ||
a4b6fadd AM |
11175 | case ppc_stub_save_res: |
11176 | return TRUE; | |
11177 | ||
721956f4 AM |
11178 | default: |
11179 | BFD_FAIL (); | |
b34976b6 | 11180 | return FALSE; |
721956f4 AM |
11181 | } |
11182 | ||
1aa42141 | 11183 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11184 | |
e7d1c40c | 11185 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11186 | { |
11187 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11188 | size_t len1, len2; |
11189 | char *name; | |
11190 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11191 | "long_branch", |
11192 | "long_branch", | |
3f6ff479 AM |
11193 | "long_branch", |
11194 | "plt_branch", | |
ee75fd95 | 11195 | "plt_branch", |
05d0e962 AM |
11196 | "plt_branch", |
11197 | "plt_branch", | |
11198 | "plt_call", | |
11199 | "plt_call", | |
794e51c0 | 11200 | "plt_call", |
ee75fd95 AM |
11201 | "plt_call" }; |
11202 | ||
11203 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11204 | len2 = strlen (stub_entry->root.string); | |
11205 | name = bfd_malloc (len1 + len2 + 2); | |
11206 | if (name == NULL) | |
11207 | return FALSE; | |
11208 | memcpy (name, stub_entry->root.string, 9); | |
11209 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11210 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11211 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11212 | if (h == NULL) |
11213 | return FALSE; | |
11214 | if (h->root.type == bfd_link_hash_new) | |
11215 | { | |
11216 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11217 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11218 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11219 | h->ref_regular = 1; |
11220 | h->def_regular = 1; | |
11221 | h->ref_regular_nonweak = 1; | |
11222 | h->forced_local = 1; | |
11223 | h->non_elf = 0; | |
2ec55de3 | 11224 | h->root.linker_def = 1; |
97b639ba AM |
11225 | } |
11226 | } | |
11227 | ||
b34976b6 | 11228 | return TRUE; |
721956f4 AM |
11229 | } |
11230 | ||
11231 | /* As above, but don't actually build the stub. Just bump offset so | |
11232 | we know stub section sizes, and select plt_branch stubs where | |
11233 | long_branch stubs won't do. */ | |
11234 | ||
b34976b6 | 11235 | static bfd_boolean |
4ce794b7 | 11236 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11237 | { |
11238 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11239 | struct bfd_link_info *info; |
721956f4 | 11240 | struct ppc_link_hash_table *htab; |
f891966f AM |
11241 | asection *plt; |
11242 | bfd_vma targ, off, r2off; | |
11243 | unsigned int size, extra, lr_used, delta; | |
721956f4 AM |
11244 | |
11245 | /* Massage our args to the form they really have. */ | |
11246 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11247 | info = in_arg; |
11248 | ||
11249 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11250 | if (htab == NULL) |
11251 | return FALSE; | |
721956f4 | 11252 | |
1aa42141 AM |
11253 | /* Make a note of the offset within the stubs for this entry. */ |
11254 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11255 | ||
a4b6fadd AM |
11256 | if (stub_entry->h != NULL |
11257 | && stub_entry->h->save_res | |
11258 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11259 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11260 | { | |
11261 | /* Don't make stubs to out-of-line register save/restore | |
11262 | functions. Instead, emit copies of the functions. */ | |
11263 | stub_entry->group->needs_save_res = 1; | |
11264 | stub_entry->stub_type = ppc_stub_save_res; | |
11265 | return TRUE; | |
11266 | } | |
11267 | ||
f891966f | 11268 | switch (stub_entry->stub_type) |
721956f4 | 11269 | { |
f891966f AM |
11270 | case ppc_stub_plt_branch: |
11271 | case ppc_stub_plt_branch_r2off: | |
11272 | /* Reset the stub type from the plt branch variant in case we now | |
11273 | can reach with a shorter stub. */ | |
11274 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11275 | /* Fall through. */ | |
11276 | case ppc_stub_long_branch: | |
11277 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
11278 | targ = (stub_entry->target_value |
11279 | + stub_entry->target_section->output_offset | |
11280 | + stub_entry->target_section->output_section->vma); | |
f891966f | 11281 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
11282 | off = (stub_entry->stub_offset |
11283 | + stub_entry->group->stub_sec->output_offset | |
11284 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11285 | |
ad8e1ba5 | 11286 | size = 4; |
f891966f | 11287 | r2off = 0; |
ad8e1ba5 AM |
11288 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
11289 | { | |
25f53a85 | 11290 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11291 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11292 | { |
11293 | htab->stub_error = TRUE; | |
11294 | return FALSE; | |
11295 | } | |
a7c49797 | 11296 | size = 8; |
ac2df442 | 11297 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11298 | size += 4; |
11299 | if (PPC_LO (r2off) != 0) | |
11300 | size += 4; | |
1aa42141 | 11301 | off += size - 4; |
ad8e1ba5 | 11302 | } |
1aa42141 | 11303 | off = targ - off; |
ad8e1ba5 | 11304 | |
f891966f AM |
11305 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
11306 | Do the same for -R objects without function descriptors. */ | |
11307 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
11308 | && r2off == 0 | |
11309 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
11310 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 11311 | { |
f891966f | 11312 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 11313 | |
f891966f AM |
11314 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11315 | stub_entry->root.string + 9, | |
11316 | TRUE, FALSE); | |
11317 | if (br_entry == NULL) | |
721956f4 | 11318 | { |
f891966f AM |
11319 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11320 | stub_entry->root.string); | |
11321 | htab->stub_error = TRUE; | |
11322 | return FALSE; | |
721956f4 AM |
11323 | } |
11324 | ||
f891966f | 11325 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 11326 | { |
f891966f AM |
11327 | br_entry->iter = htab->stub_iteration; |
11328 | br_entry->offset = htab->brlt->size; | |
11329 | htab->brlt->size += 8; | |
63bc6f6c | 11330 | |
f891966f AM |
11331 | if (htab->relbrlt != NULL) |
11332 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
11333 | else if (info->emitrelocations) | |
84f5d08e | 11334 | { |
f891966f AM |
11335 | htab->brlt->reloc_count += 1; |
11336 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 11337 | } |
f891966f | 11338 | } |
ac2df442 | 11339 | |
f891966f AM |
11340 | targ = (br_entry->offset |
11341 | + htab->brlt->output_offset | |
11342 | + htab->brlt->output_section->vma); | |
11343 | off = (elf_gp (info->output_bfd) | |
11344 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11345 | off = targ - off; | |
176a0d42 | 11346 | |
f891966f AM |
11347 | if (info->emitrelocations) |
11348 | { | |
11349 | stub_entry->group->stub_sec->reloc_count | |
11350 | += 1 + (PPC_HA (off) != 0); | |
11351 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11352 | } | |
05d0e962 | 11353 | |
f891966f AM |
11354 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
11355 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
11356 | { | |
11357 | size = 12; | |
11358 | if (PPC_HA (off) != 0) | |
11359 | size = 16; | |
ac2df442 | 11360 | } |
f891966f | 11361 | else |
ac2df442 | 11362 | { |
f891966f AM |
11363 | size = 16; |
11364 | if (PPC_HA (off) != 0) | |
11365 | size += 4; | |
11366 | ||
11367 | if (PPC_HA (r2off) != 0) | |
11368 | size += 4; | |
11369 | if (PPC_LO (r2off) != 0) | |
11370 | size += 4; | |
ac2df442 | 11371 | } |
721956f4 | 11372 | } |
f891966f AM |
11373 | else if (info->emitrelocations) |
11374 | { | |
11375 | stub_entry->group->stub_sec->reloc_count += 1; | |
11376 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11377 | } | |
11378 | break; | |
11379 | ||
11380 | case ppc_stub_plt_branch_notoc: | |
11381 | case ppc_stub_plt_branch_both: | |
11382 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11383 | /* Fall through. */ | |
11384 | case ppc_stub_long_branch_notoc: | |
11385 | case ppc_stub_long_branch_both: | |
11386 | off = (stub_entry->stub_offset | |
11387 | + stub_entry->group->stub_sec->output_offset | |
11388 | + stub_entry->group->stub_sec->output_section->vma); | |
11389 | size = 0; | |
11390 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
11391 | size = 4; | |
11392 | off += size; | |
11393 | targ = (stub_entry->target_value | |
11394 | + stub_entry->target_section->output_offset | |
11395 | + stub_entry->target_section->output_section->vma); | |
11396 | off = targ - off; | |
11397 | ||
3d58e1fc AM |
11398 | if (info->emitrelocations) |
11399 | { | |
11400 | stub_entry->group->stub_sec->reloc_count | |
11401 | += num_relocs_for_offset (off); | |
11402 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11403 | } | |
11404 | ||
f891966f AM |
11405 | extra = size_offset (off - 8); |
11406 | /* Include branch insn plus those in the offset sequence. */ | |
11407 | size += 4 + extra; | |
11408 | /* The branch insn is at the end, or "extra" bytes along. So | |
11409 | its offset will be "extra" bytes less that that already | |
11410 | calculated. */ | |
11411 | off -= extra; | |
11412 | ||
11413 | /* After the bcl, lr has been modified so we need to emit | |
11414 | .eh_frame info saying the return address is in r12. */ | |
11415 | lr_used = stub_entry->stub_offset + 8; | |
11416 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
11417 | lr_used += 4; | |
11418 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
11419 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
11420 | DW_CFA_restore_extended 65. */ | |
11421 | delta = lr_used - stub_entry->group->lr_restore; | |
11422 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11423 | stub_entry->group->lr_restore = lr_used + 8; | |
11424 | ||
11425 | /* If the branch can't reach, use a plt_branch. */ | |
11426 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
11427 | { | |
11428 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
11429 | - ppc_stub_long_branch_notoc); | |
11430 | size += 4; | |
11431 | } | |
3d58e1fc AM |
11432 | else if (info->emitrelocations) |
11433 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
11434 | break; |
11435 | ||
11436 | case ppc_stub_plt_call_notoc: | |
11437 | case ppc_stub_plt_call_both: | |
11438 | off = (stub_entry->stub_offset | |
11439 | + stub_entry->group->stub_sec->output_offset | |
11440 | + stub_entry->group->stub_sec->output_section->vma); | |
11441 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
11442 | off += 4; | |
11443 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11444 | if (targ >= (bfd_vma) -2) | |
11445 | abort (); | |
11446 | ||
11447 | plt = htab->elf.splt; | |
11448 | if (!htab->elf.dynamic_sections_created | |
11449 | || stub_entry->h == NULL | |
11450 | || stub_entry->h->elf.dynindx == -1) | |
11451 | { | |
11452 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11453 | plt = htab->elf.iplt; | |
11454 | else | |
11455 | plt = htab->pltlocal; | |
11456 | } | |
11457 | targ += plt->output_offset + plt->output_section->vma; | |
11458 | off = targ - off; | |
11459 | ||
11460 | if (htab->params->plt_stub_align != 0) | |
11461 | { | |
11462 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11463 | ||
11464 | stub_entry->group->stub_sec->size += pad; | |
11465 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11466 | off -= pad; | |
11467 | } | |
11468 | ||
3d58e1fc AM |
11469 | if (info->emitrelocations) |
11470 | { | |
11471 | stub_entry->group->stub_sec->reloc_count | |
11472 | += num_relocs_for_offset (off - 8); | |
11473 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11474 | } | |
11475 | ||
f891966f AM |
11476 | size = plt_stub_size (htab, stub_entry, off); |
11477 | ||
11478 | /* After the bcl, lr has been modified so we need to emit | |
11479 | .eh_frame info saying the return address is in r12. */ | |
11480 | lr_used = stub_entry->stub_offset + 8; | |
11481 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
11482 | lr_used += 4; | |
11483 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
11484 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
11485 | DW_CFA_restore_extended 65. */ | |
11486 | delta = lr_used - stub_entry->group->lr_restore; | |
11487 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11488 | stub_entry->group->lr_restore = lr_used + 8; | |
11489 | break; | |
11490 | ||
11491 | case ppc_stub_plt_call: | |
11492 | case ppc_stub_plt_call_r2save: | |
11493 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
11494 | if (targ >= (bfd_vma) -2) | |
11495 | abort (); | |
11496 | plt = htab->elf.splt; | |
11497 | if (!htab->elf.dynamic_sections_created | |
11498 | || stub_entry->h == NULL | |
11499 | || stub_entry->h->elf.dynindx == -1) | |
11500 | { | |
11501 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11502 | plt = htab->elf.iplt; | |
11503 | else | |
11504 | plt = htab->pltlocal; | |
11505 | } | |
11506 | targ += plt->output_offset + plt->output_section->vma; | |
11507 | ||
11508 | off = (elf_gp (info->output_bfd) | |
11509 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11510 | off = targ - off; | |
11511 | ||
11512 | if (htab->params->plt_stub_align != 0) | |
11513 | { | |
11514 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11515 | ||
11516 | stub_entry->group->stub_sec->size += pad; | |
11517 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11518 | } | |
11519 | ||
11520 | if (info->emitrelocations) | |
11521 | { | |
11522 | stub_entry->group->stub_sec->reloc_count | |
11523 | += ((PPC_HA (off) != 0) | |
11524 | + (htab->opd_abi | |
11525 | ? 2 + (htab->params->plt_static_chain | |
11526 | && PPC_HA (off + 16) == PPC_HA (off)) | |
11527 | : 1)); | |
11528 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11529 | } | |
11530 | ||
11531 | size = plt_stub_size (htab, stub_entry, off); | |
11532 | ||
11533 | if (stub_entry->h != NULL | |
11534 | && (stub_entry->h == htab->tls_get_addr_fd | |
11535 | || stub_entry->h == htab->tls_get_addr) | |
11536 | && htab->params->tls_get_addr_opt | |
11537 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11538 | { | |
11539 | /* After the bctrl, lr has been modified so we need to | |
11540 | emit .eh_frame info saying the return address is | |
11541 | on the stack. In fact we put the EH info specifying | |
11542 | that the return address is on the stack *at* the | |
11543 | call rather than after it, because the EH info for a | |
11544 | call needs to be specified by that point. | |
11545 | See libgcc/unwind-dw2.c execute_cfa_program. */ | |
11546 | lr_used = stub_entry->stub_offset + size - 20; | |
11547 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
11548 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
11549 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
11550 | delta = lr_used - stub_entry->group->lr_restore; | |
11551 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11552 | stub_entry->group->lr_restore = size - 4; | |
11553 | } | |
11554 | break; | |
11555 | ||
11556 | default: | |
11557 | BFD_FAIL (); | |
11558 | return FALSE; | |
721956f4 AM |
11559 | } |
11560 | ||
6f20ed8a | 11561 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11562 | return TRUE; |
721956f4 AM |
11563 | } |
11564 | ||
11565 | /* Set up various things so that we can make a list of input sections | |
11566 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11567 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11568 | |
11569 | int | |
e7d1c40c | 11570 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11571 | { |
6f20ed8a | 11572 | unsigned int id; |
721956f4 AM |
11573 | bfd_size_type amt; |
11574 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11575 | ||
4dfe6ac6 NC |
11576 | if (htab == NULL) |
11577 | return -1; | |
4c52953f | 11578 | |
7cf7fcc8 | 11579 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
11580 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
11581 | htab->sec_info = bfd_zmalloc (amt); | |
11582 | if (htab->sec_info == NULL) | |
721956f4 AM |
11583 | return -1; |
11584 | ||
3d6f9012 AM |
11585 | /* Set toc_off for com, und, abs and ind sections. */ |
11586 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11587 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11588 | |
721956f4 AM |
11589 | return 1; |
11590 | } | |
11591 | ||
927be08e AM |
11592 | /* Set up for first pass at multitoc partitioning. */ |
11593 | ||
11594 | void | |
11595 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11596 | { | |
11597 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11598 | ||
1c865ab2 | 11599 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11600 | htab->toc_bfd = NULL; |
11601 | htab->toc_first_sec = NULL; | |
11602 | } | |
11603 | ||
e717da7e AM |
11604 | /* The linker repeatedly calls this function for each TOC input section |
11605 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11606 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11607 | |
927be08e | 11608 | bfd_boolean |
4ce794b7 | 11609 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11610 | { |
11611 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11612 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11613 | |
4dfe6ac6 NC |
11614 | if (htab == NULL) |
11615 | return FALSE; | |
11616 | ||
927be08e | 11617 | if (!htab->second_toc_pass) |
4c52953f | 11618 | { |
927be08e | 11619 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11620 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11621 | ||
11622 | if (new_bfd) | |
bf102f86 AM |
11623 | { |
11624 | htab->toc_bfd = isec->owner; | |
11625 | htab->toc_first_sec = isec; | |
11626 | } | |
927be08e | 11627 | |
bf102f86 AM |
11628 | addr = isec->output_offset + isec->output_section->vma; |
11629 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11630 | limit = 0x80008000; |
11631 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11632 | limit = 0x10000; | |
11633 | if (off + isec->size > limit) | |
bf102f86 AM |
11634 | { |
11635 | addr = (htab->toc_first_sec->output_offset | |
11636 | + htab->toc_first_sec->output_section->vma); | |
11637 | htab->toc_curr = addr; | |
a27e685f | 11638 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11639 | } |
99877b66 | 11640 | |
927be08e AM |
11641 | /* toc_curr is the base address of this toc group. Set elf_gp |
11642 | for the input section to be the offset relative to the | |
11643 | output toc base plus 0x8000. Making the input elf_gp an | |
11644 | offset allows us to move the toc as a whole without | |
11645 | recalculating input elf_gp. */ | |
06bcf541 | 11646 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
11647 | off += TOC_BASE_OFF; |
11648 | ||
11649 | /* Die if someone uses a linker script that doesn't keep input | |
11650 | file .toc and .got together. */ | |
a4fd3de5 AM |
11651 | if (new_bfd |
11652 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11653 | && elf_gp (isec->owner) != off) |
11654 | return FALSE; | |
11655 | ||
11656 | elf_gp (isec->owner) = off; | |
11657 | return TRUE; | |
4c52953f | 11658 | } |
927be08e AM |
11659 | |
11660 | /* During the second pass toc_first_sec points to the start of | |
11661 | a toc group, and toc_curr is used to track the old elf_gp. | |
11662 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11663 | if (htab->toc_bfd == isec->owner) | |
11664 | return TRUE; | |
11665 | htab->toc_bfd = isec->owner; | |
11666 | ||
11667 | if (htab->toc_first_sec == NULL | |
11668 | || htab->toc_curr != elf_gp (isec->owner)) | |
11669 | { | |
11670 | htab->toc_curr = elf_gp (isec->owner); | |
11671 | htab->toc_first_sec = isec; | |
11672 | } | |
11673 | addr = (htab->toc_first_sec->output_offset | |
11674 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 11675 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
11676 | elf_gp (isec->owner) = off; |
11677 | ||
11678 | return TRUE; | |
ad8e1ba5 AM |
11679 | } |
11680 | ||
927be08e AM |
11681 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11682 | symbol H. */ | |
11683 | ||
11684 | static bfd_boolean | |
11685 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11686 | { | |
11687 | if (h->root.type == bfd_link_hash_indirect) | |
11688 | return TRUE; | |
11689 | ||
927be08e AM |
11690 | merge_got_entries (&h->got.glist); |
11691 | ||
11692 | return TRUE; | |
11693 | } | |
11694 | ||
11695 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11696 | symbol H. */ | |
11697 | ||
11698 | static bfd_boolean | |
11699 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11700 | { | |
11701 | struct got_entry *gent; | |
11702 | ||
11703 | if (h->root.type == bfd_link_hash_indirect) | |
11704 | return TRUE; | |
11705 | ||
927be08e AM |
11706 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11707 | if (!gent->is_indirect) | |
11708 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11709 | return TRUE; | |
11710 | } | |
11711 | ||
11712 | /* Called on the first multitoc pass after the last call to | |
11713 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11714 | entries. */ | |
11715 | ||
11716 | bfd_boolean | |
11717 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11718 | { |
11719 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11720 | struct bfd *ibfd, *ibfd2; |
11721 | bfd_boolean done_something; | |
11722 | ||
11723 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11724 | |
7865406b AM |
11725 | if (!htab->do_multi_toc) |
11726 | return FALSE; | |
11727 | ||
d0fae19d | 11728 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11729 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11730 | ||
11731 | /* And tlsld_got. */ | |
c72f2fb2 | 11732 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11733 | { |
11734 | struct got_entry *ent, *ent2; | |
11735 | ||
11736 | if (!is_ppc64_elf (ibfd)) | |
11737 | continue; | |
11738 | ||
11739 | ent = ppc64_tlsld_got (ibfd); | |
11740 | if (!ent->is_indirect | |
11741 | && ent->got.offset != (bfd_vma) -1) | |
11742 | { | |
c72f2fb2 | 11743 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11744 | { |
11745 | if (!is_ppc64_elf (ibfd2)) | |
11746 | continue; | |
11747 | ||
11748 | ent2 = ppc64_tlsld_got (ibfd2); | |
11749 | if (!ent2->is_indirect | |
11750 | && ent2->got.offset != (bfd_vma) -1 | |
11751 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11752 | { | |
11753 | ent2->is_indirect = TRUE; | |
11754 | ent2->got.ent = ent; | |
11755 | } | |
11756 | } | |
11757 | } | |
11758 | } | |
11759 | ||
11760 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11761 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11762 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11763 | htab->got_reli_size = 0; |
11764 | ||
c72f2fb2 | 11765 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11766 | { |
11767 | asection *got, *relgot; | |
11768 | ||
11769 | if (!is_ppc64_elf (ibfd)) | |
11770 | continue; | |
11771 | ||
11772 | got = ppc64_elf_tdata (ibfd)->got; | |
11773 | if (got != NULL) | |
11774 | { | |
11775 | got->rawsize = got->size; | |
11776 | got->size = 0; | |
11777 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11778 | relgot->rawsize = relgot->size; | |
11779 | relgot->size = 0; | |
11780 | } | |
11781 | } | |
11782 | ||
11783 | /* Now reallocate the got, local syms first. We don't need to | |
11784 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11785 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11786 | { |
11787 | struct got_entry **lgot_ents; | |
11788 | struct got_entry **end_lgot_ents; | |
11789 | struct plt_entry **local_plt; | |
11790 | struct plt_entry **end_local_plt; | |
f961d9dd | 11791 | unsigned char *lgot_masks; |
927be08e AM |
11792 | bfd_size_type locsymcount; |
11793 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11794 | asection *s; |
927be08e AM |
11795 | |
11796 | if (!is_ppc64_elf (ibfd)) | |
11797 | continue; | |
11798 | ||
11799 | lgot_ents = elf_local_got_ents (ibfd); | |
11800 | if (!lgot_ents) | |
11801 | continue; | |
11802 | ||
11803 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11804 | locsymcount = symtab_hdr->sh_info; | |
11805 | end_lgot_ents = lgot_ents + locsymcount; | |
11806 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11807 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11808 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11809 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11810 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11811 | { | |
11812 | struct got_entry *ent; | |
11813 | ||
11814 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11815 | { |
19e08130 AM |
11816 | unsigned int ent_size = 8; |
11817 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11818 | ||
d0fae19d AM |
11819 | ent->got.offset = s->size; |
11820 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11821 | { |
19e08130 AM |
11822 | ent_size *= 2; |
11823 | rel_size *= 2; | |
11824 | } | |
11825 | s->size += ent_size; | |
37da22e5 | 11826 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 11827 | { |
33e44f2e | 11828 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11829 | htab->got_reli_size += rel_size; |
11830 | } | |
6a3858a6 AM |
11831 | else if (bfd_link_pic (info) |
11832 | && !((ent->tls_type & TLS_TPREL) != 0 | |
11833 | && bfd_link_executable (info))) | |
19e08130 AM |
11834 | { |
11835 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11836 | srel->size += rel_size; | |
d0fae19d AM |
11837 | } |
11838 | } | |
927be08e AM |
11839 | } |
11840 | } | |
11841 | ||
11842 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11843 | ||
c72f2fb2 | 11844 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11845 | { |
11846 | struct got_entry *ent; | |
11847 | ||
11848 | if (!is_ppc64_elf (ibfd)) | |
11849 | continue; | |
11850 | ||
11851 | ent = ppc64_tlsld_got (ibfd); | |
11852 | if (!ent->is_indirect | |
11853 | && ent->got.offset != (bfd_vma) -1) | |
11854 | { | |
11855 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11856 | ent->got.offset = s->size; | |
11857 | s->size += 16; | |
0e1862bb | 11858 | if (bfd_link_pic (info)) |
927be08e AM |
11859 | { |
11860 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11861 | srel->size += sizeof (Elf64_External_Rela); | |
11862 | } | |
11863 | } | |
11864 | } | |
11865 | ||
33e44f2e | 11866 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11867 | if (!done_something) |
c72f2fb2 | 11868 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11869 | { |
11870 | asection *got; | |
11871 | ||
11872 | if (!is_ppc64_elf (ibfd)) | |
11873 | continue; | |
11874 | ||
11875 | got = ppc64_elf_tdata (ibfd)->got; | |
11876 | if (got != NULL) | |
11877 | { | |
11878 | done_something = got->rawsize != got->size; | |
11879 | if (done_something) | |
11880 | break; | |
11881 | } | |
11882 | } | |
11883 | ||
11884 | if (done_something) | |
e7d1c40c | 11885 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11886 | |
11887 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11888 | on input sections. */ | |
11889 | htab->toc_bfd = NULL; | |
11890 | htab->toc_first_sec = NULL; | |
11891 | htab->second_toc_pass = TRUE; | |
11892 | return done_something; | |
11893 | } | |
11894 | ||
11895 | /* Called after second pass of multitoc partitioning. */ | |
11896 | ||
11897 | void | |
11898 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11899 | { | |
11900 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11901 | ||
11902 | /* After the second pass, toc_curr tracks the TOC offset used | |
11903 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11904 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11905 | } |
11906 | ||
9b5ecbd0 AM |
11907 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11908 | calls, then there's no need to use toc adjusting stubs when branching | |
11909 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11910 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11911 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11912 | for a stub was detected. If called from the top level, a return of | |
11913 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11914 | |
11915 | static int | |
4ce794b7 | 11916 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11917 | { |
9b5ecbd0 | 11918 | int ret; |
70cc837d AM |
11919 | |
11920 | /* Mark this section as checked. */ | |
11921 | isec->call_check_done = 1; | |
9b5ecbd0 | 11922 | |
772119ce AM |
11923 | /* We know none of our code bearing sections will need toc stubs. */ |
11924 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11925 | return 0; | |
11926 | ||
eea6121a | 11927 | if (isec->size == 0) |
082c50f8 AM |
11928 | return 0; |
11929 | ||
4c52953f AM |
11930 | if (isec->output_section == NULL) |
11931 | return 0; | |
11932 | ||
4c52953f | 11933 | ret = 0; |
70cc837d | 11934 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11935 | { |
70cc837d AM |
11936 | Elf_Internal_Rela *relstart, *rel; |
11937 | Elf_Internal_Sym *local_syms; | |
11938 | struct ppc_link_hash_table *htab; | |
2917689a | 11939 | |
70cc837d AM |
11940 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11941 | info->keep_memory); | |
11942 | if (relstart == NULL) | |
11943 | return -1; | |
90aecf7a | 11944 | |
70cc837d AM |
11945 | /* Look for branches to outside of this section. */ |
11946 | local_syms = NULL; | |
11947 | htab = ppc_hash_table (info); | |
11948 | if (htab == NULL) | |
11949 | return -1; | |
4c52953f | 11950 | |
70cc837d | 11951 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11952 | { |
70cc837d AM |
11953 | enum elf_ppc64_reloc_type r_type; |
11954 | unsigned long r_symndx; | |
11955 | struct elf_link_hash_entry *h; | |
11956 | struct ppc_link_hash_entry *eh; | |
11957 | Elf_Internal_Sym *sym; | |
11958 | asection *sym_sec; | |
11959 | struct _opd_sec_data *opd; | |
11960 | bfd_vma sym_value; | |
11961 | bfd_vma dest; | |
11962 | ||
11963 | r_type = ELF64_R_TYPE (rel->r_info); | |
11964 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 11965 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
11966 | && r_type != R_PPC64_REL14 |
11967 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 11968 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
11969 | && r_type != R_PPC64_PLTCALL |
11970 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 11971 | continue; |
4c52953f | 11972 | |
70cc837d AM |
11973 | r_symndx = ELF64_R_SYM (rel->r_info); |
11974 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11975 | isec->owner)) | |
4c52953f | 11976 | { |
70cc837d AM |
11977 | ret = -1; |
11978 | break; | |
11979 | } | |
4c52953f | 11980 | |
70cc837d AM |
11981 | /* Calls to dynamic lib functions go through a plt call stub |
11982 | that uses r2. */ | |
11983 | eh = (struct ppc_link_hash_entry *) h; | |
11984 | if (eh != NULL | |
11985 | && (eh->elf.plt.plist != NULL | |
11986 | || (eh->oh != NULL | |
11987 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11988 | { | |
11989 | ret = 1; | |
11990 | break; | |
4c52953f AM |
11991 | } |
11992 | ||
70cc837d AM |
11993 | if (sym_sec == NULL) |
11994 | /* Ignore other undefined symbols. */ | |
4c52953f | 11995 | continue; |
4c52953f | 11996 | |
70cc837d AM |
11997 | /* Assume branches to other sections not included in the |
11998 | link need stubs too, to cover -R and absolute syms. */ | |
11999 | if (sym_sec->output_section == NULL) | |
12000 | { | |
12001 | ret = 1; | |
12002 | break; | |
12003 | } | |
4c52953f | 12004 | |
70cc837d AM |
12005 | if (h == NULL) |
12006 | sym_value = sym->st_value; | |
12007 | else | |
12008 | { | |
12009 | if (h->root.type != bfd_link_hash_defined | |
12010 | && h->root.type != bfd_link_hash_defweak) | |
12011 | abort (); | |
12012 | sym_value = h->root.u.def.value; | |
12013 | } | |
12014 | sym_value += rel->r_addend; | |
4c52953f | 12015 | |
70cc837d AM |
12016 | /* If this branch reloc uses an opd sym, find the code section. */ |
12017 | opd = get_opd_info (sym_sec); | |
12018 | if (opd != NULL) | |
12019 | { | |
12020 | if (h == NULL && opd->adjust != NULL) | |
12021 | { | |
12022 | long adjust; | |
4c52953f | 12023 | |
92a9c616 | 12024 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12025 | if (adjust == -1) |
12026 | /* Assume deleted functions won't ever be called. */ | |
12027 | continue; | |
12028 | sym_value += adjust; | |
12029 | } | |
4c52953f | 12030 | |
aef36ac1 AM |
12031 | dest = opd_entry_value (sym_sec, sym_value, |
12032 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12033 | if (dest == (bfd_vma) -1) |
12034 | continue; | |
12035 | } | |
12036 | else | |
12037 | dest = (sym_value | |
12038 | + sym_sec->output_offset | |
12039 | + sym_sec->output_section->vma); | |
4c52953f | 12040 | |
70cc837d AM |
12041 | /* Ignore branch to self. */ |
12042 | if (sym_sec == isec) | |
12043 | continue; | |
4c52953f | 12044 | |
70cc837d AM |
12045 | /* If the called function uses the toc, we need a stub. */ |
12046 | if (sym_sec->has_toc_reloc | |
12047 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12048 | { |
70cc837d | 12049 | ret = 1; |
4c52953f AM |
12050 | break; |
12051 | } | |
70cc837d AM |
12052 | |
12053 | /* Assume any branch that needs a long branch stub might in fact | |
12054 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12055 | else if (dest - (isec->output_offset | |
12056 | + isec->output_section->vma | |
6911b7dc AM |
12057 | + rel->r_offset) + (1 << 25) |
12058 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12059 | ? h->other | |
12060 | : sym->st_other)) | |
4c52953f | 12061 | { |
70cc837d AM |
12062 | ret = 1; |
12063 | break; | |
12064 | } | |
12065 | ||
12066 | /* If calling back to a section in the process of being | |
12067 | tested, we can't say for sure that no toc adjusting stubs | |
12068 | are needed, so don't return zero. */ | |
12069 | else if (sym_sec->call_check_in_progress) | |
12070 | ret = 2; | |
12071 | ||
12072 | /* Branches to another section that itself doesn't have any TOC | |
12073 | references are OK. Recursively call ourselves to check. */ | |
12074 | else if (!sym_sec->call_check_done) | |
12075 | { | |
12076 | int recur; | |
12077 | ||
12078 | /* Mark current section as indeterminate, so that other | |
12079 | sections that call back to current won't be marked as | |
12080 | known. */ | |
12081 | isec->call_check_in_progress = 1; | |
12082 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12083 | isec->call_check_in_progress = 0; | |
12084 | ||
4c52953f AM |
12085 | if (recur != 0) |
12086 | { | |
70cc837d AM |
12087 | ret = recur; |
12088 | if (recur != 2) | |
12089 | break; | |
4c52953f AM |
12090 | } |
12091 | } | |
4c52953f | 12092 | } |
70cc837d AM |
12093 | |
12094 | if (local_syms != NULL | |
12095 | && (elf_symtab_hdr (isec->owner).contents | |
12096 | != (unsigned char *) local_syms)) | |
12097 | free (local_syms); | |
12098 | if (elf_section_data (isec)->relocs != relstart) | |
12099 | free (relstart); | |
9b5ecbd0 AM |
12100 | } |
12101 | ||
70cc837d AM |
12102 | if ((ret & 1) == 0 |
12103 | && isec->map_head.s != NULL | |
12104 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12105 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12106 | { | |
12107 | if (isec->map_head.s->has_toc_reloc | |
12108 | || isec->map_head.s->makes_toc_func_call) | |
12109 | ret = 1; | |
12110 | else if (!isec->map_head.s->call_check_done) | |
12111 | { | |
12112 | int recur; | |
12113 | isec->call_check_in_progress = 1; | |
12114 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12115 | isec->call_check_in_progress = 0; | |
12116 | if (recur != 0) | |
12117 | ret = recur; | |
12118 | } | |
12119 | } | |
12120 | ||
12121 | if (ret == 1) | |
12122 | isec->makes_toc_func_call = 1; | |
4c52953f | 12123 | |
9b5ecbd0 AM |
12124 | return ret; |
12125 | } | |
12126 | ||
721956f4 AM |
12127 | /* The linker repeatedly calls this function for each input section, |
12128 | in the order that input sections are linked into output sections. | |
12129 | Build lists of input sections to determine groupings between which | |
12130 | we may insert linker stubs. */ | |
12131 | ||
9b5ecbd0 | 12132 | bfd_boolean |
4ce794b7 | 12133 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12134 | { |
12135 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12136 | ||
4dfe6ac6 NC |
12137 | if (htab == NULL) |
12138 | return FALSE; | |
12139 | ||
734b6cf9 | 12140 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12141 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12142 | { |
3d6f9012 AM |
12143 | /* This happens to make the list in reverse order, |
12144 | which is what we want. */ | |
6f20ed8a AM |
12145 | htab->sec_info[isec->id].u.list |
12146 | = htab->sec_info[isec->output_section->id].u.list; | |
12147 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12148 | } |
ad8e1ba5 | 12149 | |
4c52953f | 12150 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12151 | { |
8b974ba3 AM |
12152 | /* Analyse sections that aren't already flagged as needing a |
12153 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12154 | .fixup contains branches, but only back to the function that | |
12155 | hit an exception. */ | |
12156 | if (!(isec->has_toc_reloc | |
12157 | || (isec->flags & SEC_CODE) == 0 | |
12158 | || strcmp (isec->name, ".fixup") == 0 | |
12159 | || isec->call_check_done)) | |
12160 | { | |
12161 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12162 | return FALSE; |
8b974ba3 AM |
12163 | } |
12164 | /* Make all sections use the TOC assigned for this object file. | |
12165 | This will be wrong for pasted sections; We fix that in | |
12166 | check_pasted_section(). */ | |
12167 | if (elf_gp (isec->owner) != 0) | |
12168 | htab->toc_curr = elf_gp (isec->owner); | |
12169 | } | |
12170 | ||
6f20ed8a | 12171 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12172 | return TRUE; |
721956f4 AM |
12173 | } |
12174 | ||
70cc837d AM |
12175 | /* Check that all .init and .fini sections use the same toc, if they |
12176 | have toc relocs. */ | |
12177 | ||
12178 | static bfd_boolean | |
12179 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12180 | { | |
12181 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12182 | ||
12183 | if (o != NULL) | |
12184 | { | |
12185 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12186 | bfd_vma toc_off = 0; | |
12187 | asection *i; | |
12188 | ||
12189 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12190 | if (i->has_toc_reloc) | |
12191 | { | |
12192 | if (toc_off == 0) | |
6f20ed8a AM |
12193 | toc_off = htab->sec_info[i->id].toc_off; |
12194 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12195 | return FALSE; |
12196 | } | |
6683a28d AM |
12197 | |
12198 | if (toc_off == 0) | |
12199 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12200 | if (i->makes_toc_func_call) | |
12201 | { | |
6f20ed8a | 12202 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12203 | break; |
12204 | } | |
12205 | ||
70cc837d AM |
12206 | /* Make sure the whole pasted function uses the same toc offset. */ |
12207 | if (toc_off != 0) | |
12208 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12209 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12210 | } |
12211 | return TRUE; | |
12212 | } | |
12213 | ||
12214 | bfd_boolean | |
12215 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12216 | { | |
12217 | return (check_pasted_section (info, ".init") | |
12218 | & check_pasted_section (info, ".fini")); | |
12219 | } | |
12220 | ||
721956f4 AM |
12221 | /* See whether we can group stub sections together. Grouping stub |
12222 | sections may result in fewer stubs. More importantly, we need to | |
12223 | put all .init* and .fini* stubs at the beginning of the .init or | |
12224 | .fini output sections respectively, because glibc splits the | |
12225 | _init and _fini functions into multiple parts. Putting a stub in | |
12226 | the middle of a function is not a good idea. */ | |
12227 | ||
6f20ed8a AM |
12228 | static bfd_boolean |
12229 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12230 | bfd_size_type stub_group_size, |
12231 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12232 | { |
6f20ed8a AM |
12233 | struct ppc_link_hash_table *htab; |
12234 | asection *osec; | |
7c8fe5c4 AM |
12235 | bfd_boolean suppress_size_errors; |
12236 | ||
6f20ed8a AM |
12237 | htab = ppc_hash_table (info); |
12238 | if (htab == NULL) | |
12239 | return FALSE; | |
12240 | ||
7c8fe5c4 | 12241 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12242 | if (stub_group_size == 1) |
12243 | { | |
12244 | /* Default values. */ | |
12245 | if (stubs_always_before_branch) | |
09f92717 | 12246 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12247 | else |
09f92717 | 12248 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12249 | suppress_size_errors = TRUE; |
12250 | } | |
12251 | ||
6f20ed8a | 12252 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12253 | { |
6f20ed8a AM |
12254 | asection *tail; |
12255 | ||
12256 | if (osec->id >= htab->sec_info_arr_size) | |
12257 | continue; | |
12258 | ||
12259 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12260 | while (tail != NULL) |
721956f4 | 12261 | { |
734b6cf9 AM |
12262 | asection *curr; |
12263 | asection *prev; | |
12264 | bfd_size_type total; | |
12265 | bfd_boolean big_sec; | |
12266 | bfd_vma curr_toc; | |
6f20ed8a | 12267 | struct map_stub *group; |
09f92717 | 12268 | bfd_size_type group_size; |
734b6cf9 AM |
12269 | |
12270 | curr = tail; | |
eea6121a | 12271 | total = tail->size; |
09f92717 AM |
12272 | group_size = (ppc64_elf_section_data (tail) != NULL |
12273 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12274 | ? stub_group_size >> 10 : stub_group_size); | |
12275 | ||
12276 | big_sec = total > group_size; | |
7c8fe5c4 | 12277 | if (big_sec && !suppress_size_errors) |
695344c0 | 12278 | /* xgettext:c-format */ |
871b3ab2 | 12279 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12280 | tail->owner, tail); |
6f20ed8a | 12281 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12282 | |
6f20ed8a | 12283 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12284 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12285 | < (ppc64_elf_section_data (prev) != NULL |
12286 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12287 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12288 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12289 | curr = prev; |
12290 | ||
12291 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12292 | than group_size and thus can be handled by one stub |
734b6cf9 | 12293 | section. (or the tail section is itself larger than |
09f92717 AM |
12294 | group_size, in which case we may be toast.) We should |
12295 | really be keeping track of the total size of stubs added | |
12296 | here, as stubs contribute to the final output section | |
12297 | size. That's a little tricky, and this way will only | |
12298 | break if stubs added make the total size more than 2^25, | |
12299 | ie. for the default stub_group_size, if stubs total more | |
12300 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12301 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12302 | if (group == NULL) | |
12303 | return FALSE; | |
12304 | group->link_sec = curr; | |
12305 | group->stub_sec = NULL; | |
a4b6fadd | 12306 | group->needs_save_res = 0; |
df136d64 AM |
12307 | group->lr_restore = 0; |
12308 | group->eh_size = 0; | |
12309 | group->eh_base = 0; | |
a4b6fadd AM |
12310 | group->next = htab->group; |
12311 | htab->group = group; | |
734b6cf9 | 12312 | do |
721956f4 | 12313 | { |
6f20ed8a | 12314 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12315 | /* Set up this stub group. */ |
6f20ed8a | 12316 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12317 | } |
734b6cf9 AM |
12318 | while (tail != curr && (tail = prev) != NULL); |
12319 | ||
09f92717 | 12320 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12321 | bytes before the stub section can be handled by it too. |
12322 | Don't do this if we have a really large section after the | |
12323 | stubs, as adding more stubs increases the chance that | |
12324 | branches may not reach into the stub section. */ | |
12325 | if (!stubs_always_before_branch && !big_sec) | |
12326 | { | |
12327 | total = 0; | |
12328 | while (prev != NULL | |
12329 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12330 | < (ppc64_elf_section_data (prev) != NULL |
12331 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
12332 | ? (group_size = stub_group_size >> 10) |
12333 | : group_size)) | |
6f20ed8a | 12334 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12335 | { |
12336 | tail = prev; | |
6f20ed8a AM |
12337 | prev = htab->sec_info[tail->id].u.list; |
12338 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12339 | } |
12340 | } | |
12341 | tail = prev; | |
721956f4 AM |
12342 | } |
12343 | } | |
6f20ed8a | 12344 | return TRUE; |
721956f4 AM |
12345 | } |
12346 | ||
58d180e8 AM |
12347 | static const unsigned char glink_eh_frame_cie[] = |
12348 | { | |
12349 | 0, 0, 0, 16, /* length. */ | |
12350 | 0, 0, 0, 0, /* id. */ | |
12351 | 1, /* CIE version. */ | |
12352 | 'z', 'R', 0, /* Augmentation string. */ | |
12353 | 4, /* Code alignment. */ | |
12354 | 0x78, /* Data alignment. */ | |
12355 | 65, /* RA reg. */ | |
12356 | 1, /* Augmentation size. */ | |
12357 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 12358 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
12359 | }; |
12360 | ||
d969d15f AM |
12361 | /* Stripping output sections is normally done before dynamic section |
12362 | symbols have been allocated. This function is called later, and | |
12363 | handles cases like htab->brlt which is mapped to its own output | |
12364 | section. */ | |
12365 | ||
12366 | static void | |
12367 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12368 | { | |
12369 | if (isec->size == 0 | |
12370 | && isec->output_section->size == 0 | |
53d8967a | 12371 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12372 | && !bfd_section_removed_from_list (info->output_bfd, |
12373 | isec->output_section) | |
12374 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12375 | { | |
12376 | isec->output_section->flags |= SEC_EXCLUDE; | |
12377 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12378 | info->output_bfd->section_count--; | |
12379 | } | |
12380 | } | |
12381 | ||
721956f4 AM |
12382 | /* Determine and set the size of the stub section for a final link. |
12383 | ||
12384 | The basic idea here is to examine all the relocations looking for | |
12385 | PC-relative calls to a target that is unreachable with a "bl" | |
12386 | instruction. */ | |
12387 | ||
b34976b6 | 12388 | bfd_boolean |
e7d1c40c | 12389 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12390 | { |
12391 | bfd_size_type stub_group_size; | |
b34976b6 | 12392 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12393 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12394 | ||
4dfe6ac6 NC |
12395 | if (htab == NULL) |
12396 | return FALSE; | |
12397 | ||
0e1862bb | 12398 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12399 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12400 | if (!htab->opd_abi) |
e7d1c40c AM |
12401 | htab->params->plt_thread_safe = 0; |
12402 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12403 | { |
e2458743 | 12404 | static const char *const thread_starter[] = |
794e51c0 AM |
12405 | { |
12406 | "pthread_create", | |
12407 | /* libstdc++ */ | |
12408 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12409 | /* librt */ | |
12410 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12411 | "mq_notify", "create_timer", | |
12412 | /* libanl */ | |
12413 | "getaddrinfo_a", | |
12414 | /* libgomp */ | |
2300b5a1 | 12415 | "GOMP_parallel", |
794e51c0 | 12416 | "GOMP_parallel_start", |
2300b5a1 | 12417 | "GOMP_parallel_loop_static", |
794e51c0 | 12418 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12419 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12420 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12421 | "GOMP_parallel_loop_guided", |
794e51c0 | 12422 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12423 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12424 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12425 | "GOMP_parallel_sections", |
68ffbac6 | 12426 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12427 | /* libgo */ |
12428 | "__go_go", | |
794e51c0 AM |
12429 | }; |
12430 | unsigned i; | |
12431 | ||
a4b6fadd | 12432 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12433 | { |
12434 | struct elf_link_hash_entry *h; | |
12435 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12436 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12437 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12438 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12439 | break; |
12440 | } | |
12441 | } | |
e7d1c40c AM |
12442 | stubs_always_before_branch = htab->params->group_size < 0; |
12443 | if (htab->params->group_size < 0) | |
12444 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12445 | else |
e7d1c40c | 12446 | stub_group_size = htab->params->group_size; |
721956f4 | 12447 | |
6f20ed8a AM |
12448 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12449 | return FALSE; | |
721956f4 | 12450 | |
c9301e31 AM |
12451 | #define STUB_SHRINK_ITER 20 |
12452 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12453 | exit on a stub section shrinking. This is to break out of a | |
12454 | pathological case where adding stubs on one iteration decreases | |
12455 | section gaps (perhaps due to alignment), which then requires | |
12456 | fewer or smaller stubs on the next iteration. */ | |
12457 | ||
721956f4 AM |
12458 | while (1) |
12459 | { | |
12460 | bfd *input_bfd; | |
12461 | unsigned int bfd_indx; | |
a4b6fadd | 12462 | struct map_stub *group; |
721956f4 AM |
12463 | |
12464 | htab->stub_iteration += 1; | |
721956f4 AM |
12465 | |
12466 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12467 | input_bfd != NULL; | |
c72f2fb2 | 12468 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12469 | { |
12470 | Elf_Internal_Shdr *symtab_hdr; | |
12471 | asection *section; | |
6cdc0ccc | 12472 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12473 | |
0c8d6e5c | 12474 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12475 | continue; |
12476 | ||
721956f4 | 12477 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12478 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12479 | if (symtab_hdr->sh_info == 0) |
12480 | continue; | |
12481 | ||
721956f4 AM |
12482 | /* Walk over each section attached to the input bfd. */ |
12483 | for (section = input_bfd->sections; | |
12484 | section != NULL; | |
12485 | section = section->next) | |
12486 | { | |
721956f4 | 12487 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12488 | |
12489 | /* If there aren't any relocs, then there's nothing more | |
12490 | to do. */ | |
12491 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12492 | || (section->flags & SEC_ALLOC) == 0 |
12493 | || (section->flags & SEC_LOAD) == 0 | |
12494 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12495 | || section->reloc_count == 0) |
12496 | continue; | |
12497 | ||
12498 | /* If this section is a link-once section that will be | |
12499 | discarded, then don't create any stubs. */ | |
12500 | if (section->output_section == NULL | |
927be08e | 12501 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12502 | continue; |
12503 | ||
1e2f5b6e AM |
12504 | /* Get the relocs. */ |
12505 | internal_relocs | |
4ce794b7 | 12506 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12507 | info->keep_memory); |
721956f4 | 12508 | if (internal_relocs == NULL) |
1e2f5b6e | 12509 | goto error_ret_free_local; |
721956f4 AM |
12510 | |
12511 | /* Now examine each relocation. */ | |
12512 | irela = internal_relocs; | |
12513 | irelaend = irela + section->reloc_count; | |
12514 | for (; irela < irelaend; irela++) | |
12515 | { | |
4ce794b7 AM |
12516 | enum elf_ppc64_reloc_type r_type; |
12517 | unsigned int r_indx; | |
721956f4 AM |
12518 | enum ppc_stub_type stub_type; |
12519 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12520 | asection *sym_sec, *code_sec; |
e054468f | 12521 | bfd_vma sym_value, code_value; |
721956f4 | 12522 | bfd_vma destination; |
6911b7dc | 12523 | unsigned long local_off; |
8843416a | 12524 | bfd_boolean ok_dest; |
721956f4 | 12525 | struct ppc_link_hash_entry *hash; |
8387904d | 12526 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12527 | struct elf_link_hash_entry *h; |
12528 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12529 | char *stub_name; |
12530 | const asection *id_sec; | |
74f0fb50 | 12531 | struct _opd_sec_data *opd; |
e054468f | 12532 | struct plt_entry *plt_ent; |
721956f4 AM |
12533 | |
12534 | r_type = ELF64_R_TYPE (irela->r_info); | |
12535 | r_indx = ELF64_R_SYM (irela->r_info); | |
12536 | ||
4ce794b7 | 12537 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12538 | { |
12539 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12540 | goto error_ret_free_internal; |
721956f4 AM |
12541 | } |
12542 | ||
12543 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 12544 | if (r_type != R_PPC64_REL24 |
05d0e962 | 12545 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
12546 | && r_type != R_PPC64_REL14 |
12547 | && r_type != R_PPC64_REL14_BRTAKEN | |
12548 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12549 | continue; |
12550 | ||
12551 | /* Now determine the call target, its name, value, | |
12552 | section. */ | |
411e1bfb AM |
12553 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12554 | r_indx, input_bfd)) | |
12555 | goto error_ret_free_internal; | |
12556 | hash = (struct ppc_link_hash_entry *) h; | |
12557 | ||
8843416a | 12558 | ok_dest = FALSE; |
8387904d | 12559 | fdh = NULL; |
7fe2b9a6 | 12560 | sym_value = 0; |
411e1bfb | 12561 | if (hash == NULL) |
721956f4 | 12562 | { |
411e1bfb | 12563 | sym_value = sym->st_value; |
c27b8c2a AM |
12564 | if (sym_sec != NULL |
12565 | && sym_sec->output_section != NULL) | |
12566 | ok_dest = TRUE; | |
721956f4 | 12567 | } |
7fe2b9a6 AM |
12568 | else if (hash->elf.root.type == bfd_link_hash_defined |
12569 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12570 | { | |
12571 | sym_value = hash->elf.root.u.def.value; | |
12572 | if (sym_sec->output_section != NULL) | |
12573 | ok_dest = TRUE; | |
12574 | } | |
12575 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12576 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12577 | { |
99877b66 | 12578 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12579 | use the func descriptor sym instead if it is |
12580 | defined. */ | |
ceb1f1ef | 12581 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12582 | && hash->oh != NULL) |
8387904d | 12583 | { |
8c5b4e52 | 12584 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12585 | if (fdh->elf.root.type == bfd_link_hash_defined |
12586 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12587 | { | |
12588 | sym_sec = fdh->elf.root.u.def.section; | |
12589 | sym_value = fdh->elf.root.u.def.value; | |
12590 | if (sym_sec->output_section != NULL) | |
12591 | ok_dest = TRUE; | |
12592 | } | |
99877b66 AM |
12593 | else |
12594 | fdh = NULL; | |
8387904d | 12595 | } |
7fe2b9a6 AM |
12596 | } |
12597 | else | |
12598 | { | |
12599 | bfd_set_error (bfd_error_bad_value); | |
12600 | goto error_ret_free_internal; | |
721956f4 AM |
12601 | } |
12602 | ||
8843416a | 12603 | destination = 0; |
6911b7dc | 12604 | local_off = 0; |
8843416a AM |
12605 | if (ok_dest) |
12606 | { | |
12607 | sym_value += irela->r_addend; | |
12608 | destination = (sym_value | |
12609 | + sym_sec->output_offset | |
12610 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12611 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12612 | ? hash->elf.other | |
12613 | : sym->st_other); | |
8843416a AM |
12614 | } |
12615 | ||
8387904d | 12616 | code_sec = sym_sec; |
e054468f | 12617 | code_value = sym_value; |
74f0fb50 AM |
12618 | opd = get_opd_info (sym_sec); |
12619 | if (opd != NULL) | |
8387904d AM |
12620 | { |
12621 | bfd_vma dest; | |
12622 | ||
74f0fb50 | 12623 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12624 | { |
51aecdc5 | 12625 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12626 | if (adjust == -1) |
12627 | continue; | |
e054468f | 12628 | code_value += adjust; |
8387904d AM |
12629 | sym_value += adjust; |
12630 | } | |
12631 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12632 | &code_sec, &code_value, FALSE); |
8387904d AM |
12633 | if (dest != (bfd_vma) -1) |
12634 | { | |
12635 | destination = dest; | |
12636 | if (fdh != NULL) | |
12637 | { | |
12638 | /* Fixup old ABI sym to point at code | |
12639 | entry. */ | |
99877b66 | 12640 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12641 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12642 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12643 | } |
12644 | } | |
12645 | } | |
12646 | ||
721956f4 | 12647 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12648 | plt_ent = NULL; |
721956f4 | 12649 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12650 | &plt_ent, destination, |
12651 | local_off); | |
ad8e1ba5 | 12652 | |
05d0e962 AM |
12653 | if (r_type == R_PPC64_REL24_NOTOC) |
12654 | { | |
12655 | if (stub_type == ppc_stub_plt_call) | |
12656 | stub_type = ppc_stub_plt_call_notoc; | |
12657 | else if (stub_type == ppc_stub_long_branch | |
12658 | || (code_sec != NULL | |
12659 | && code_sec->output_section != NULL | |
12660 | && (((hash ? hash->elf.other : sym->st_other) | |
12661 | & STO_PPC64_LOCAL_MASK) | |
12662 | != 1 << STO_PPC64_LOCAL_BIT))) | |
12663 | stub_type = ppc_stub_long_branch_notoc; | |
12664 | } | |
12665 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
12666 | { |
12667 | /* Check whether we need a TOC adjusting stub. | |
12668 | Since the linker pastes together pieces from | |
12669 | different object files when creating the | |
12670 | _init and _fini functions, it may be that a | |
12671 | call to what looks like a local sym is in | |
12672 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
12673 | if ((code_sec != NULL |
12674 | && code_sec->output_section != NULL | |
12675 | && (htab->sec_info[code_sec->id].toc_off | |
12676 | != htab->sec_info[section->id].toc_off) | |
12677 | && (code_sec->has_toc_reloc | |
12678 | || code_sec->makes_toc_func_call)) | |
12679 | || (((hash ? hash->elf.other : sym->st_other) | |
12680 | & STO_PPC64_LOCAL_MASK) | |
12681 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
12682 | stub_type = ppc_stub_long_branch_r2off; |
12683 | } | |
12684 | ||
721956f4 AM |
12685 | if (stub_type == ppc_stub_none) |
12686 | continue; | |
12687 | ||
411e1bfb AM |
12688 | /* __tls_get_addr calls might be eliminated. */ |
12689 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 12690 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 12691 | && hash != NULL |
8387904d AM |
12692 | && (hash == htab->tls_get_addr |
12693 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12694 | && section->has_tls_reloc |
12695 | && irela != internal_relocs) | |
12696 | { | |
12697 | /* Get tls info. */ | |
f961d9dd | 12698 | unsigned char *tls_mask; |
411e1bfb | 12699 | |
3a71aa26 | 12700 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12701 | irela - 1, input_bfd)) |
12702 | goto error_ret_free_internal; | |
37da22e5 | 12703 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
12704 | continue; |
12705 | } | |
12706 | ||
f378ab09 | 12707 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 12708 | { |
6e1816be AM |
12709 | if (!htab->opd_abi |
12710 | && htab->params->plt_localentry0 != 0 | |
12711 | && is_elfv2_localentry0 (&hash->elf)) | |
12712 | htab->has_plt_localentry0 = 1; | |
12713 | else if (irela + 1 < irelaend | |
12714 | && irela[1].r_offset == irela->r_offset + 4 | |
12715 | && (ELF64_R_TYPE (irela[1].r_info) | |
12716 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
12717 | { |
12718 | if (!tocsave_find (htab, INSERT, | |
12719 | &local_syms, irela + 1, input_bfd)) | |
12720 | goto error_ret_free_internal; | |
12721 | } | |
f378ab09 AM |
12722 | else |
12723 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 12724 | } |
3b421ab3 | 12725 | |
721956f4 | 12726 | /* Support for grouping stub sections. */ |
6f20ed8a | 12727 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12728 | |
12729 | /* Get the name of this stub. */ | |
12730 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12731 | if (!stub_name) | |
12732 | goto error_ret_free_internal; | |
12733 | ||
12734 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12735 | stub_name, FALSE, FALSE); |
721956f4 AM |
12736 | if (stub_entry != NULL) |
12737 | { | |
05d0e962 AM |
12738 | enum ppc_stub_type old_type; |
12739 | /* A stub has already been created, but it may | |
12740 | not be the required type. We shouldn't be | |
12741 | transitioning from plt_call to long_branch | |
12742 | stubs or vice versa, but we might be | |
12743 | upgrading from plt_call to plt_call_r2save or | |
12744 | from long_branch to long_branch_r2off. */ | |
721956f4 | 12745 | free (stub_name); |
05d0e962 AM |
12746 | old_type = stub_entry->stub_type; |
12747 | switch (old_type) | |
12748 | { | |
12749 | default: | |
12750 | abort (); | |
12751 | ||
12752 | case ppc_stub_save_res: | |
12753 | continue; | |
12754 | ||
12755 | case ppc_stub_plt_call: | |
12756 | case ppc_stub_plt_call_r2save: | |
12757 | case ppc_stub_plt_call_notoc: | |
12758 | case ppc_stub_plt_call_both: | |
12759 | if (stub_type == ppc_stub_plt_call) | |
12760 | continue; | |
12761 | else if (stub_type == ppc_stub_plt_call_r2save) | |
12762 | { | |
12763 | if (old_type == ppc_stub_plt_call_notoc) | |
12764 | stub_type = ppc_stub_plt_call_both; | |
12765 | } | |
12766 | else if (stub_type == ppc_stub_plt_call_notoc) | |
12767 | { | |
12768 | if (old_type == ppc_stub_plt_call_r2save) | |
12769 | stub_type = ppc_stub_plt_call_both; | |
12770 | } | |
12771 | else | |
12772 | abort (); | |
12773 | break; | |
12774 | ||
12775 | case ppc_stub_plt_branch: | |
12776 | case ppc_stub_plt_branch_r2off: | |
12777 | case ppc_stub_plt_branch_notoc: | |
12778 | case ppc_stub_plt_branch_both: | |
12779 | old_type += (ppc_stub_long_branch | |
12780 | - ppc_stub_plt_branch); | |
12781 | /* Fall through. */ | |
12782 | case ppc_stub_long_branch: | |
12783 | case ppc_stub_long_branch_r2off: | |
12784 | case ppc_stub_long_branch_notoc: | |
12785 | case ppc_stub_long_branch_both: | |
12786 | if (stub_type == ppc_stub_long_branch) | |
12787 | continue; | |
12788 | else if (stub_type == ppc_stub_long_branch_r2off) | |
12789 | { | |
12790 | if (old_type == ppc_stub_long_branch_notoc) | |
12791 | stub_type = ppc_stub_long_branch_both; | |
12792 | } | |
12793 | else if (stub_type == ppc_stub_long_branch_notoc) | |
12794 | { | |
12795 | if (old_type == ppc_stub_long_branch_r2off) | |
12796 | stub_type = ppc_stub_long_branch_both; | |
12797 | } | |
12798 | else | |
12799 | abort (); | |
12800 | break; | |
12801 | } | |
12802 | if (old_type < stub_type) | |
794e51c0 | 12803 | stub_entry->stub_type = stub_type; |
721956f4 AM |
12804 | continue; |
12805 | } | |
12806 | ||
25f53a85 | 12807 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12808 | if (stub_entry == NULL) |
12809 | { | |
12810 | free (stub_name); | |
6cdc0ccc AM |
12811 | error_ret_free_internal: |
12812 | if (elf_section_data (section)->relocs == NULL) | |
12813 | free (internal_relocs); | |
12814 | error_ret_free_local: | |
12815 | if (local_syms != NULL | |
12816 | && (symtab_hdr->contents | |
12817 | != (unsigned char *) local_syms)) | |
12818 | free (local_syms); | |
b34976b6 | 12819 | return FALSE; |
721956f4 AM |
12820 | } |
12821 | ||
ad8e1ba5 | 12822 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
12823 | if (stub_type >= ppc_stub_plt_call |
12824 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 12825 | { |
05d0e962 AM |
12826 | stub_entry->target_value = sym_value; |
12827 | stub_entry->target_section = sym_sec; | |
e054468f AM |
12828 | } |
12829 | else | |
12830 | { | |
05d0e962 AM |
12831 | stub_entry->target_value = code_value; |
12832 | stub_entry->target_section = code_sec; | |
e054468f | 12833 | } |
721956f4 | 12834 | stub_entry->h = hash; |
e054468f | 12835 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
12836 | stub_entry->symtype |
12837 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 12838 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 12839 | |
3d58e1fc AM |
12840 | if (hash != NULL |
12841 | && (hash->elf.root.type == bfd_link_hash_defined | |
12842 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 12843 | htab->stub_globals += 1; |
721956f4 AM |
12844 | } |
12845 | ||
12846 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12847 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12848 | free (internal_relocs); |
721956f4 | 12849 | } |
6cdc0ccc AM |
12850 | |
12851 | if (local_syms != NULL | |
12852 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12853 | { | |
12854 | if (!info->keep_memory) | |
12855 | free (local_syms); | |
12856 | else | |
12857 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12858 | } | |
721956f4 AM |
12859 | } |
12860 | ||
5c3dead3 | 12861 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12862 | stub sections. */ |
d4aaa2a0 | 12863 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
12864 | { |
12865 | group->lr_restore = 0; | |
12866 | group->eh_size = 0; | |
12867 | if (group->stub_sec != NULL) | |
12868 | { | |
12869 | asection *stub_sec = group->stub_sec; | |
12870 | ||
12871 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
12872 | || stub_sec->rawsize < stub_sec->size) | |
12873 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12874 | stub_sec->rawsize = stub_sec->size; | |
12875 | stub_sec->size = 0; | |
12876 | stub_sec->reloc_count = 0; | |
12877 | stub_sec->flags &= ~SEC_RELOC; | |
12878 | } | |
12879 | } | |
eea6121a | 12880 | |
ba21f564 AM |
12881 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12882 | || htab->brlt->rawsize < htab->brlt->size) | |
12883 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 12884 | htab->brlt->size = 0; |
84f5d08e AM |
12885 | htab->brlt->reloc_count = 0; |
12886 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12887 | if (htab->relbrlt != NULL) |
eea6121a | 12888 | htab->relbrlt->size = 0; |
721956f4 | 12889 | |
63bc6f6c | 12890 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12891 | |
a4b6fadd AM |
12892 | for (group = htab->group; group != NULL; group = group->next) |
12893 | if (group->needs_save_res) | |
12894 | group->stub_sec->size += htab->sfpr->size; | |
12895 | ||
176a0d42 AM |
12896 | if (info->emitrelocations |
12897 | && htab->glink != NULL && htab->glink->size != 0) | |
12898 | { | |
12899 | htab->glink->reloc_count = 1; | |
12900 | htab->glink->flags |= SEC_RELOC; | |
12901 | } | |
12902 | ||
58d180e8 AM |
12903 | if (htab->glink_eh_frame != NULL |
12904 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 12905 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 12906 | { |
2e0ce1c8 | 12907 | size_t size = 0, align = 4; |
58d180e8 | 12908 | |
d4aaa2a0 | 12909 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
12910 | if (group->eh_size != 0) |
12911 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 12912 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 12913 | size += (24 + align - 1) & -align; |
58d180e8 | 12914 | if (size != 0) |
2e0ce1c8 AM |
12915 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
12916 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
12917 | size = (size + align - 1) & -align; | |
58d180e8 AM |
12918 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12919 | htab->glink_eh_frame->size = size; | |
12920 | } | |
12921 | ||
e7d1c40c | 12922 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
12923 | for (group = htab->group; group != NULL; group = group->next) |
12924 | if (group->stub_sec != NULL) | |
691d2e9a AM |
12925 | { |
12926 | int align = abs (htab->params->plt_stub_align); | |
12927 | group->stub_sec->size | |
12928 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
12929 | } | |
d4aaa2a0 AM |
12930 | |
12931 | for (group = htab->group; group != NULL; group = group->next) | |
12932 | if (group->stub_sec != NULL | |
12933 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 12934 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 12935 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
12936 | break; |
12937 | ||
d4aaa2a0 | 12938 | if (group == NULL |
ba21f564 AM |
12939 | && (htab->brlt->rawsize == htab->brlt->size |
12940 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
12941 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
12942 | && (htab->glink_eh_frame == NULL |
12943 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12944 | break; |
12945 | ||
721956f4 | 12946 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12947 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12948 | } |
12949 | ||
da44f4e5 AM |
12950 | if (htab->glink_eh_frame != NULL |
12951 | && htab->glink_eh_frame->size != 0) | |
12952 | { | |
12953 | bfd_vma val; | |
12954 | bfd_byte *p, *last_fde; | |
12955 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 12956 | struct map_stub *group; |
da44f4e5 | 12957 | |
df136d64 AM |
12958 | /* It is necessary to at least have a rough outline of the |
12959 | linker generated CIEs and FDEs written before | |
12960 | bfd_elf_discard_info is run, in order for these FDEs to be | |
12961 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
12962 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
12963 | if (p == NULL) | |
12964 | return FALSE; | |
12965 | htab->glink_eh_frame->contents = p; | |
12966 | last_fde = p; | |
2e0ce1c8 | 12967 | align = 4; |
da44f4e5 AM |
12968 | |
12969 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12970 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 12971 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 12972 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 12973 | p += last_fde_len + 4; |
da44f4e5 | 12974 | |
d4aaa2a0 | 12975 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 12976 | if (group->eh_size != 0) |
da44f4e5 | 12977 | { |
df136d64 | 12978 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 12979 | last_fde = p; |
df136d64 | 12980 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 12981 | /* FDE length. */ |
2e0ce1c8 | 12982 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
12983 | p += 4; |
12984 | /* CIE pointer. */ | |
12985 | val = p - htab->glink_eh_frame->contents; | |
12986 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12987 | p += 4; | |
12988 | /* Offset to stub section, written later. */ | |
12989 | p += 4; | |
12990 | /* stub section size. */ | |
d4aaa2a0 | 12991 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
12992 | p += 4; |
12993 | /* Augmentation. */ | |
12994 | p += 1; | |
df136d64 AM |
12995 | /* Make sure we don't have all nops. This is enough for |
12996 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
12997 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 12998 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
12999 | } |
13000 | if (htab->glink != NULL && htab->glink->size != 0) | |
13001 | { | |
13002 | last_fde = p; | |
2e0ce1c8 | 13003 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13004 | /* FDE length. */ |
2e0ce1c8 | 13005 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13006 | p += 4; |
13007 | /* CIE pointer. */ | |
13008 | val = p - htab->glink_eh_frame->contents; | |
13009 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13010 | p += 4; | |
13011 | /* Offset to .glink, written later. */ | |
13012 | p += 4; | |
13013 | /* .glink size. */ | |
13014 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13015 | p += 4; | |
13016 | /* Augmentation. */ | |
13017 | p += 1; | |
13018 | ||
13019 | *p++ = DW_CFA_advance_loc + 1; | |
13020 | *p++ = DW_CFA_register; | |
13021 | *p++ = 65; | |
9f08fa5c | 13022 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13023 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13024 | *p++ = DW_CFA_restore_extended; |
13025 | *p++ = 65; | |
2e0ce1c8 | 13026 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13027 | } |
13028 | /* Subsume any padding into the last FDE if user .eh_frame | |
13029 | sections are aligned more than glink_eh_frame. Otherwise any | |
13030 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13031 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13032 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13033 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13034 | htab->glink_eh_frame->size = size + pad; |
13035 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13036 | } | |
13037 | ||
d969d15f AM |
13038 | maybe_strip_output (info, htab->brlt); |
13039 | if (htab->glink_eh_frame != NULL) | |
13040 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13041 | |
b34976b6 | 13042 | return TRUE; |
721956f4 AM |
13043 | } |
13044 | ||
13045 | /* Called after we have determined section placement. If sections | |
805fc799 | 13046 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13047 | |
805fc799 | 13048 | bfd_vma |
1c865ab2 | 13049 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13050 | { |
805fc799 | 13051 | asection *s; |
a27e685f | 13052 | bfd_vma TOCstart, adjust; |
721956f4 | 13053 | |
43417696 AM |
13054 | if (info != NULL) |
13055 | { | |
13056 | struct elf_link_hash_entry *h; | |
13057 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13058 | ||
13059 | if (is_elf_hash_table (htab) | |
13060 | && htab->hgot != NULL) | |
13061 | h = htab->hgot; | |
13062 | else | |
13063 | { | |
13064 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13065 | if (is_elf_hash_table (htab)) | |
13066 | htab->hgot = h; | |
13067 | } | |
13068 | if (h != NULL | |
13069 | && h->root.type == bfd_link_hash_defined | |
13070 | && !h->root.linker_def | |
13071 | && (!is_elf_hash_table (htab) | |
13072 | || h->def_regular)) | |
13073 | { | |
13074 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
13075 | + h->root.u.def.section->output_offset | |
13076 | + h->root.u.def.section->output_section->vma); | |
13077 | _bfd_set_gp_value (obfd, TOCstart); | |
13078 | return TOCstart; | |
13079 | } | |
13080 | } | |
13081 | ||
805fc799 AM |
13082 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13083 | order. The TOC starts where the first of these sections starts. */ | |
13084 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13085 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13086 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13087 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13088 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13089 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13090 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13091 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13092 | { |
13093 | /* This may happen for | |
13094 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13095 | .toc directive | |
13096 | o bad linker script | |
13097 | o --gc-sections and empty TOC sections | |
13098 | ||
13099 | FIXME: Warn user? */ | |
13100 | ||
13101 | /* Look for a likely section. We probably won't even be | |
13102 | using TOCstart. */ | |
13103 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13104 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13105 | | SEC_EXCLUDE)) | |
805fc799 AM |
13106 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13107 | break; | |
721956f4 | 13108 | if (s == NULL) |
805fc799 | 13109 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13110 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13111 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13112 | break; | |
721956f4 | 13113 | if (s == NULL) |
805fc799 | 13114 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13115 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13116 | == SEC_ALLOC) | |
805fc799 | 13117 | break; |
721956f4 | 13118 | if (s == NULL) |
805fc799 | 13119 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13120 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13121 | break; |
13122 | } | |
721956f4 | 13123 | |
805fc799 AM |
13124 | TOCstart = 0; |
13125 | if (s != NULL) | |
13126 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13127 | |
a27e685f AM |
13128 | /* Force alignment. */ |
13129 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13130 | TOCstart -= adjust; | |
1c865ab2 AM |
13131 | _bfd_set_gp_value (obfd, TOCstart); |
13132 | ||
810d4e75 | 13133 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13134 | { |
13135 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13136 | ||
810d4e75 AM |
13137 | if (htab != NULL) |
13138 | { | |
13139 | if (htab->elf.hgot != NULL) | |
13140 | { | |
a27e685f | 13141 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13142 | htab->elf.hgot->root.u.def.section = s; |
13143 | } | |
13144 | } | |
13145 | else | |
1c865ab2 | 13146 | { |
810d4e75 AM |
13147 | struct bfd_link_hash_entry *bh = NULL; |
13148 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13149 | s, TOC_BASE_OFF - adjust, |
13150 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13151 | } |
13152 | } | |
805fc799 | 13153 | return TOCstart; |
721956f4 AM |
13154 | } |
13155 | ||
a345bc8d | 13156 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13157 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13158 | |
13159 | static bfd_boolean | |
49c09209 | 13160 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13161 | { |
13162 | struct bfd_link_info *info; | |
13163 | struct ppc_link_hash_table *htab; | |
49c09209 | 13164 | struct plt_entry *ent; |
a345bc8d AM |
13165 | asection *s; |
13166 | ||
13167 | if (h->root.type == bfd_link_hash_indirect) | |
13168 | return TRUE; | |
13169 | ||
49c09209 AM |
13170 | info = inf; |
13171 | htab = ppc_hash_table (info); | |
13172 | if (htab == NULL) | |
13173 | return FALSE; | |
13174 | ||
13175 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13176 | if (ent->plt.offset != (bfd_vma) -1) | |
13177 | { | |
13178 | /* This symbol has an entry in the procedure linkage | |
13179 | table. Set it up. */ | |
13180 | Elf_Internal_Rela rela; | |
2d7ad24e | 13181 | asection *plt, *relplt; |
49c09209 AM |
13182 | bfd_byte *loc; |
13183 | ||
13184 | if (!htab->elf.dynamic_sections_created | |
13185 | || h->dynindx == -1) | |
13186 | { | |
13187 | if (!(h->def_regular | |
13188 | && (h->root.type == bfd_link_hash_defined | |
13189 | || h->root.type == bfd_link_hash_defweak))) | |
13190 | continue; | |
2d7ad24e AM |
13191 | if (h->type == STT_GNU_IFUNC) |
13192 | { | |
13193 | plt = htab->elf.iplt; | |
13194 | relplt = htab->elf.irelplt; | |
13195 | htab->local_ifunc_resolver = 1; | |
13196 | if (htab->opd_abi) | |
13197 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13198 | else | |
13199 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13200 | } | |
49c09209 | 13201 | else |
2d7ad24e AM |
13202 | { |
13203 | plt = htab->pltlocal; | |
13204 | if (bfd_link_pic (info)) | |
13205 | { | |
13206 | relplt = htab->relpltlocal; | |
13207 | if (htab->opd_abi) | |
13208 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13209 | else | |
13210 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13211 | } | |
13212 | else | |
13213 | relplt = NULL; | |
13214 | } | |
49c09209 AM |
13215 | rela.r_addend = (h->root.u.def.value |
13216 | + h->root.u.def.section->output_offset | |
13217 | + h->root.u.def.section->output_section->vma | |
13218 | + ent->addend); | |
2d7ad24e AM |
13219 | |
13220 | if (relplt == NULL) | |
13221 | { | |
13222 | loc = plt->contents + ent->plt.offset; | |
13223 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13224 | if (htab->opd_abi) | |
13225 | { | |
13226 | bfd_vma toc = elf_gp (info->output_bfd); | |
13227 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13228 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13229 | } | |
13230 | } | |
13231 | else | |
13232 | { | |
13233 | rela.r_offset = (plt->output_section->vma | |
13234 | + plt->output_offset | |
13235 | + ent->plt.offset); | |
13236 | loc = relplt->contents + (relplt->reloc_count++ | |
13237 | * sizeof (Elf64_External_Rela)); | |
13238 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13239 | } | |
49c09209 AM |
13240 | } |
13241 | else | |
13242 | { | |
13243 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13244 | + htab->elf.splt->output_offset | |
13245 | + ent->plt.offset); | |
13246 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13247 | rela.r_addend = ent->addend; | |
13248 | loc = (htab->elf.srelplt->contents | |
13249 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13250 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13251 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13252 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13253 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13254 | } |
49c09209 AM |
13255 | } |
13256 | ||
a345bc8d AM |
13257 | if (!h->pointer_equality_needed) |
13258 | return TRUE; | |
13259 | ||
13260 | if (h->def_regular) | |
13261 | return TRUE; | |
13262 | ||
9e390558 | 13263 | s = htab->global_entry; |
49c09209 AM |
13264 | if (s == NULL || s->size == 0) |
13265 | return TRUE; | |
13266 | ||
13267 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13268 | if (ent->plt.offset != (bfd_vma) -1 | |
13269 | && ent->addend == 0) | |
a345bc8d AM |
13270 | { |
13271 | bfd_byte *p; | |
13272 | asection *plt; | |
13273 | bfd_vma off; | |
13274 | ||
a345bc8d | 13275 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13276 | plt = htab->elf.splt; |
a345bc8d AM |
13277 | if (!htab->elf.dynamic_sections_created |
13278 | || h->dynindx == -1) | |
2d7ad24e AM |
13279 | { |
13280 | if (h->type == STT_GNU_IFUNC) | |
13281 | plt = htab->elf.iplt; | |
13282 | else | |
13283 | plt = htab->pltlocal; | |
13284 | } | |
49c09209 | 13285 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13286 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13287 | ||
13288 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13289 | { | |
13290 | info->callbacks->einfo | |
c1c8c1ef | 13291 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13292 | h->root.root.string); |
13293 | bfd_set_error (bfd_error_bad_value); | |
13294 | htab->stub_error = TRUE; | |
13295 | } | |
13296 | ||
7341d5e2 AM |
13297 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13298 | if (htab->params->emit_stub_syms) | |
13299 | { | |
13300 | size_t len = strlen (h->root.root.string); | |
13301 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13302 | ||
13303 | if (name == NULL) | |
13304 | return FALSE; | |
13305 | ||
13306 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13307 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13308 | if (h == NULL) | |
13309 | return FALSE; | |
13310 | if (h->root.type == bfd_link_hash_new) | |
13311 | { | |
13312 | h->root.type = bfd_link_hash_defined; | |
13313 | h->root.u.def.section = s; | |
13314 | h->root.u.def.value = p - s->contents; | |
13315 | h->ref_regular = 1; | |
13316 | h->def_regular = 1; | |
13317 | h->ref_regular_nonweak = 1; | |
13318 | h->forced_local = 1; | |
13319 | h->non_elf = 0; | |
2ec55de3 | 13320 | h->root.linker_def = 1; |
7341d5e2 AM |
13321 | } |
13322 | } | |
13323 | ||
a345bc8d AM |
13324 | if (PPC_HA (off) != 0) |
13325 | { | |
13326 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13327 | p += 4; | |
13328 | } | |
13329 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13330 | p += 4; | |
13331 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13332 | p += 4; | |
407aa07c | 13333 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
13334 | break; |
13335 | } | |
13336 | return TRUE; | |
13337 | } | |
13338 | ||
49c09209 AM |
13339 | /* Write PLT relocs for locals. */ |
13340 | ||
13341 | static bfd_boolean | |
13342 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
13343 | { | |
13344 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13345 | bfd *ibfd; | |
13346 | ||
13347 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
13348 | { | |
13349 | struct got_entry **lgot_ents, **end_lgot_ents; | |
13350 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
13351 | Elf_Internal_Shdr *symtab_hdr; | |
13352 | bfd_size_type locsymcount; | |
13353 | Elf_Internal_Sym *local_syms = NULL; | |
13354 | struct plt_entry *ent; | |
13355 | ||
13356 | if (!is_ppc64_elf (ibfd)) | |
13357 | continue; | |
13358 | ||
13359 | lgot_ents = elf_local_got_ents (ibfd); | |
13360 | if (!lgot_ents) | |
13361 | continue; | |
13362 | ||
13363 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
13364 | locsymcount = symtab_hdr->sh_info; | |
13365 | end_lgot_ents = lgot_ents + locsymcount; | |
13366 | local_plt = (struct plt_entry **) end_lgot_ents; | |
13367 | end_local_plt = local_plt + locsymcount; | |
13368 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
13369 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
13370 | if (ent->plt.offset != (bfd_vma) -1) | |
13371 | { | |
13372 | Elf_Internal_Sym *sym; | |
13373 | asection *sym_sec; | |
13374 | asection *plt, *relplt; | |
13375 | bfd_byte *loc; | |
13376 | bfd_vma val; | |
49c09209 AM |
13377 | |
13378 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
13379 | lplt - local_plt, ibfd)) | |
13380 | { | |
13381 | if (local_syms != NULL | |
13382 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13383 | free (local_syms); | |
13384 | return FALSE; | |
13385 | } | |
13386 | ||
13387 | val = sym->st_value + ent->addend; | |
ba85c15d AM |
13388 | if (ELF_ST_TYPE (sym->st_info) != STT_GNU_IFUNC) |
13389 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
49c09209 AM |
13390 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
13391 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
13392 | ||
2d7ad24e AM |
13393 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
13394 | { | |
13395 | htab->local_ifunc_resolver = 1; | |
13396 | plt = htab->elf.iplt; | |
13397 | relplt = htab->elf.irelplt; | |
13398 | } | |
13399 | else | |
13400 | { | |
13401 | plt = htab->pltlocal; | |
13402 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
13403 | } | |
49c09209 | 13404 | |
2d7ad24e AM |
13405 | if (relplt == NULL) |
13406 | { | |
13407 | loc = plt->contents + ent->plt.offset; | |
13408 | bfd_put_64 (info->output_bfd, val, loc); | |
13409 | if (htab->opd_abi) | |
13410 | { | |
13411 | bfd_vma toc = elf_gp (ibfd); | |
13412 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13413 | } | |
13414 | } | |
49c09209 | 13415 | else |
2d7ad24e AM |
13416 | { |
13417 | Elf_Internal_Rela rela; | |
13418 | rela.r_offset = (ent->plt.offset | |
13419 | + plt->output_offset | |
13420 | + plt->output_section->vma); | |
13421 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13422 | { | |
13423 | if (htab->opd_abi) | |
13424 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13425 | else | |
13426 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13427 | } | |
13428 | else | |
13429 | { | |
13430 | if (htab->opd_abi) | |
13431 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13432 | else | |
13433 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13434 | } | |
13435 | rela.r_addend = val; | |
13436 | loc = relplt->contents + (relplt->reloc_count++ | |
13437 | * sizeof (Elf64_External_Rela)); | |
13438 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13439 | } | |
49c09209 AM |
13440 | } |
13441 | ||
13442 | if (local_syms != NULL | |
13443 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13444 | { | |
13445 | if (!info->keep_memory) | |
13446 | free (local_syms); | |
13447 | else | |
13448 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13449 | } | |
13450 | } | |
13451 | return TRUE; | |
13452 | } | |
13453 | ||
721956f4 AM |
13454 | /* Build all the stubs associated with the current output file. |
13455 | The stubs are kept in a hash table attached to the main linker | |
13456 | hash table. This function is called via gldelf64ppc_finish. */ | |
13457 | ||
b34976b6 | 13458 | bfd_boolean |
e7d1c40c | 13459 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 13460 | char **stats) |
5d1634d7 AM |
13461 | { |
13462 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 13463 | struct map_stub *group; |
721956f4 | 13464 | asection *stub_sec; |
5d1634d7 | 13465 | bfd_byte *p; |
e717da7e | 13466 | int stub_sec_count = 0; |
5d1634d7 | 13467 | |
4dfe6ac6 NC |
13468 | if (htab == NULL) |
13469 | return FALSE; | |
13470 | ||
eea6121a | 13471 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 13472 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13473 | { |
13474 | group->eh_size = 0; | |
13475 | group->lr_restore = 0; | |
13476 | if ((stub_sec = group->stub_sec) != NULL | |
13477 | && stub_sec->size != 0) | |
13478 | { | |
13479 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
13480 | stub_sec->size); | |
13481 | if (stub_sec->contents == NULL) | |
13482 | return FALSE; | |
13483 | stub_sec->size = 0; | |
13484 | } | |
13485 | } | |
5d1634d7 | 13486 | |
23eb7e01 | 13487 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13488 | { |
9f951329 | 13489 | unsigned int indx; |
ad8e1ba5 | 13490 | bfd_vma plt0; |
9f951329 | 13491 | |
721956f4 | 13492 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13493 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13494 | { |
13495 | struct elf_link_hash_entry *h; | |
468392fb AM |
13496 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13497 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13498 | if (h == NULL) |
13499 | return FALSE; | |
13500 | if (h->root.type == bfd_link_hash_new) | |
13501 | { | |
13502 | h->root.type = bfd_link_hash_defined; | |
13503 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13504 | h->root.u.def.value = 8; |
f5385ebf AM |
13505 | h->ref_regular = 1; |
13506 | h->def_regular = 1; | |
13507 | h->ref_regular_nonweak = 1; | |
13508 | h->forced_local = 1; | |
13509 | h->non_elf = 0; | |
2ec55de3 | 13510 | h->root.linker_def = 1; |
97b639ba AM |
13511 | } |
13512 | } | |
33e44f2e AM |
13513 | plt0 = (htab->elf.splt->output_section->vma |
13514 | + htab->elf.splt->output_offset | |
13515 | - 16); | |
176a0d42 AM |
13516 | if (info->emitrelocations) |
13517 | { | |
13518 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13519 | if (r == NULL) | |
13520 | return FALSE; | |
13521 | r->r_offset = (htab->glink->output_offset | |
13522 | + htab->glink->output_section->vma); | |
13523 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13524 | r->r_addend = plt0; | |
13525 | } | |
4ce794b7 | 13526 | p = htab->glink->contents; |
176a0d42 | 13527 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13528 | bfd_put_64 (htab->glink->owner, plt0, p); |
13529 | p += 8; | |
b9e5796b AM |
13530 | if (htab->opd_abi) |
13531 | { | |
13532 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13533 | p += 4; | |
13534 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13535 | p += 4; | |
13536 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13537 | p += 4; | |
13538 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13539 | p += 4; | |
13540 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13541 | p += 4; | |
13542 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13543 | p += 4; | |
13544 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13545 | p += 4; | |
13546 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13547 | p += 4; | |
13548 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13549 | p += 4; | |
13550 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13551 | p += 4; | |
13552 | } | |
13553 | else | |
13554 | { | |
13555 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13556 | p += 4; | |
13557 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13558 | p += 4; | |
13559 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13560 | p += 4; | |
f378ab09 AM |
13561 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13562 | p += 4; | |
b9e5796b AM |
13563 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13564 | p += 4; | |
13565 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13566 | p += 4; | |
13567 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13568 | p += 4; | |
13569 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13570 | p += 4; | |
13571 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13572 | p += 4; | |
13573 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13574 | p += 4; | |
13575 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13576 | p += 4; | |
13577 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13578 | p += 4; | |
13579 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13580 | p += 4; | |
13581 | } | |
407aa07c AM |
13582 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13583 | p += 4; | |
c75bc4f7 | 13584 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13585 | |
9f951329 AM |
13586 | /* Build the .glink lazy link call stubs. */ |
13587 | indx = 0; | |
9e390558 | 13588 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13589 | { |
b9e5796b | 13590 | if (htab->opd_abi) |
9f951329 | 13591 | { |
b9e5796b AM |
13592 | if (indx < 0x8000) |
13593 | { | |
13594 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13595 | p += 4; | |
13596 | } | |
13597 | else | |
13598 | { | |
13599 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13600 | p += 4; | |
13601 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13602 | p); | |
13603 | p += 4; | |
13604 | } | |
9f951329 | 13605 | } |
4ce794b7 | 13606 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13607 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13608 | indx++; |
9f951329 AM |
13609 | p += 4; |
13610 | } | |
5d1634d7 | 13611 | } |
5d1634d7 | 13612 | |
49c09209 AM |
13613 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
13614 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
13615 | ||
13616 | if (!write_plt_relocs_for_local_syms (info)) | |
13617 | return FALSE; | |
9e390558 | 13618 | |
7341d5e2 | 13619 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13620 | { |
4ce794b7 | 13621 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13622 | htab->brlt->size); |
4ce794b7 | 13623 | if (htab->brlt->contents == NULL) |
b34976b6 | 13624 | return FALSE; |
721956f4 | 13625 | } |
ee75fd95 | 13626 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13627 | { |
13628 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13629 | htab->relbrlt->size); |
63bc6f6c AM |
13630 | if (htab->relbrlt->contents == NULL) |
13631 | return FALSE; | |
13632 | } | |
5d1634d7 | 13633 | |
721956f4 AM |
13634 | /* Build the stubs as directed by the stub hash table. */ |
13635 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13636 | |
a4b6fadd AM |
13637 | for (group = htab->group; group != NULL; group = group->next) |
13638 | if (group->needs_save_res) | |
7dda8d3c | 13639 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 13640 | |
aa8a7074 AM |
13641 | if (htab->relbrlt != NULL) |
13642 | htab->relbrlt->reloc_count = 0; | |
13643 | ||
e7d1c40c | 13644 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13645 | for (group = htab->group; group != NULL; group = group->next) |
13646 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
13647 | { |
13648 | int align = abs (htab->params->plt_stub_align); | |
13649 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13650 | } | |
794e51c0 | 13651 | |
7dda8d3c AM |
13652 | for (group = htab->group; group != NULL; group = group->next) |
13653 | if (group->needs_save_res) | |
13654 | { | |
13655 | stub_sec = group->stub_sec; | |
13656 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
13657 | htab->sfpr->contents, htab->sfpr->size); | |
13658 | if (htab->params->emit_stub_syms) | |
13659 | { | |
13660 | unsigned int i; | |
13661 | ||
13662 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13663 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13664 | return FALSE; | |
13665 | } | |
13666 | } | |
13667 | ||
df136d64 AM |
13668 | if (htab->glink_eh_frame != NULL |
13669 | && htab->glink_eh_frame->size != 0) | |
13670 | { | |
13671 | bfd_vma val; | |
13672 | size_t align = 4; | |
13673 | ||
13674 | p = htab->glink_eh_frame->contents; | |
13675 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
13676 | ||
13677 | for (group = htab->group; group != NULL; group = group->next) | |
13678 | if (group->eh_size != 0) | |
13679 | { | |
13680 | /* Offset to stub section. */ | |
13681 | val = (group->stub_sec->output_section->vma | |
13682 | + group->stub_sec->output_offset); | |
13683 | val -= (htab->glink_eh_frame->output_section->vma | |
13684 | + htab->glink_eh_frame->output_offset | |
13685 | + (p + 8 - htab->glink_eh_frame->contents)); | |
13686 | if (val + 0x80000000 > 0xffffffff) | |
13687 | { | |
13688 | _bfd_error_handler | |
13689 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
13690 | group->stub_sec->name); | |
13691 | return FALSE; | |
13692 | } | |
13693 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
13694 | p += (group->eh_size + 17 + 3) & -4; | |
13695 | } | |
13696 | if (htab->glink != NULL && htab->glink->size != 0) | |
13697 | { | |
13698 | /* Offset to .glink. */ | |
13699 | val = (htab->glink->output_section->vma | |
13700 | + htab->glink->output_offset | |
13701 | + 8); | |
13702 | val -= (htab->glink_eh_frame->output_section->vma | |
13703 | + htab->glink_eh_frame->output_offset | |
13704 | + (p + 8 - htab->glink_eh_frame->contents)); | |
13705 | if (val + 0x80000000 > 0xffffffff) | |
13706 | { | |
13707 | _bfd_error_handler | |
13708 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
13709 | htab->glink->name); | |
13710 | return FALSE; | |
13711 | } | |
13712 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
13713 | p += (24 + align - 1) & -align; | |
13714 | } | |
13715 | } | |
13716 | ||
d4aaa2a0 AM |
13717 | for (group = htab->group; group != NULL; group = group->next) |
13718 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
13719 | { |
13720 | stub_sec_count += 1; | |
c9301e31 AM |
13721 | if (stub_sec->rawsize != stub_sec->size |
13722 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13723 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13724 | break; |
13725 | } | |
5d1634d7 | 13726 | |
25516cc5 | 13727 | if (group != NULL) |
5d1634d7 | 13728 | { |
b34976b6 | 13729 | htab->stub_error = TRUE; |
cf97bcb0 | 13730 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 13731 | } |
721956f4 | 13732 | |
d2a300cf AM |
13733 | if (htab->stub_error) |
13734 | return FALSE; | |
13735 | ||
13736 | if (stats != NULL) | |
13737 | { | |
db84fff3 | 13738 | size_t len; |
d2a300cf AM |
13739 | *stats = bfd_malloc (500); |
13740 | if (*stats == NULL) | |
13741 | return FALSE; | |
13742 | ||
db84fff3 AM |
13743 | len = sprintf (*stats, |
13744 | ngettext ("linker stubs in %u group\n", | |
13745 | "linker stubs in %u groups\n", | |
13746 | stub_sec_count), | |
13747 | stub_sec_count); | |
05d0e962 AM |
13748 | sprintf (*stats + len, _(" branch %lu\n" |
13749 | " branch toc adj %lu\n" | |
13750 | " branch notoc %lu\n" | |
13751 | " branch both %lu\n" | |
13752 | " long branch %lu\n" | |
13753 | " long toc adj %lu\n" | |
13754 | " long notoc %lu\n" | |
13755 | " long both %lu\n" | |
13756 | " plt call %lu\n" | |
13757 | " plt call save %lu\n" | |
13758 | " plt call notoc %lu\n" | |
13759 | " plt call both %lu\n" | |
13760 | " global entry %lu"), | |
4ce794b7 AM |
13761 | htab->stub_count[ppc_stub_long_branch - 1], |
13762 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
05d0e962 AM |
13763 | htab->stub_count[ppc_stub_long_branch_notoc - 1], |
13764 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
4ce794b7 AM |
13765 | htab->stub_count[ppc_stub_plt_branch - 1], |
13766 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
05d0e962 AM |
13767 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], |
13768 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
794e51c0 | 13769 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 | 13770 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
05d0e962 AM |
13771 | htab->stub_count[ppc_stub_plt_call_notoc - 1], |
13772 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
7341d5e2 | 13773 | htab->stub_count[ppc_stub_global_entry - 1]); |
d2a300cf AM |
13774 | } |
13775 | return TRUE; | |
5bd4f169 AM |
13776 | } |
13777 | ||
60124e18 AM |
13778 | /* What to do when ld finds relocations against symbols defined in |
13779 | discarded sections. */ | |
13780 | ||
13781 | static unsigned int | |
13782 | ppc64_elf_action_discarded (asection *sec) | |
13783 | { | |
13784 | if (strcmp (".opd", sec->name) == 0) | |
13785 | return 0; | |
13786 | ||
13787 | if (strcmp (".toc", sec->name) == 0) | |
13788 | return 0; | |
13789 | ||
bce50a28 JJ |
13790 | if (strcmp (".toc1", sec->name) == 0) |
13791 | return 0; | |
13792 | ||
60124e18 AM |
13793 | return _bfd_elf_default_action_discarded (sec); |
13794 | } | |
13795 | ||
5bd4f169 AM |
13796 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13797 | to handle the relocations for a section. | |
13798 | ||
13799 | The relocs are always passed as Rela structures; if the section | |
13800 | actually uses Rel structures, the r_addend field will always be | |
13801 | zero. | |
13802 | ||
13803 | This function is responsible for adjust the section contents as | |
13804 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13805 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13806 | necessary. |
13807 | ||
13808 | This function does not have to worry about setting the reloc | |
13809 | address or the reloc symbol index. | |
13810 | ||
13811 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13812 | ||
13813 | LOCAL_SECTIONS is an array giving the section in the input file | |
13814 | corresponding to the st_shndx field of each local symbol. | |
13815 | ||
13816 | The global hash table entry for the global symbols can be found | |
13817 | via elf_sym_hashes (input_bfd). | |
13818 | ||
1049f94e | 13819 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13820 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13821 | going to be the section symbol corresponding to the output | |
13822 | section, which means that the addend must be adjusted | |
13823 | accordingly. */ | |
13824 | ||
b34976b6 | 13825 | static bfd_boolean |
4ce794b7 AM |
13826 | ppc64_elf_relocate_section (bfd *output_bfd, |
13827 | struct bfd_link_info *info, | |
13828 | bfd *input_bfd, | |
13829 | asection *input_section, | |
13830 | bfd_byte *contents, | |
13831 | Elf_Internal_Rela *relocs, | |
13832 | Elf_Internal_Sym *local_syms, | |
13833 | asection **local_sections) | |
5bd4f169 | 13834 | { |
65f38f15 | 13835 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13836 | Elf_Internal_Shdr *symtab_hdr; |
13837 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13838 | Elf_Internal_Rela *rel; |
c316a17c | 13839 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13840 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13841 | Elf_Internal_Rela outrel; |
13842 | bfd_byte *loc; | |
411e1bfb | 13843 | struct got_entry **local_got_ents; |
5bd4f169 | 13844 | bfd_vma TOCstart; |
b34976b6 AM |
13845 | bfd_boolean ret = TRUE; |
13846 | bfd_boolean is_opd; | |
794e51c0 AM |
13847 | /* Assume 'at' branch hints. */ |
13848 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13849 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13850 | |
65f38f15 | 13851 | /* Initialize howto table if needed. */ |
5bd4f169 | 13852 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13853 | ppc_howto_init (); |
13854 | ||
65f38f15 | 13855 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13856 | if (htab == NULL) |
13857 | return FALSE; | |
ee75fd95 AM |
13858 | |
13859 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13860 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13861 | return TRUE; |
13862 | ||
7af5d5c4 AM |
13863 | if (!is_ppc64_elf (input_bfd)) |
13864 | { | |
13865 | bfd_set_error (bfd_error_wrong_format); | |
13866 | return FALSE; | |
13867 | } | |
0ffa91dd | 13868 | |
411e1bfb | 13869 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13870 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13871 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13872 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13873 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13874 | |
c316a17c | 13875 | rel = wrel = relocs; |
5bd4f169 | 13876 | relend = relocs + input_section->reloc_count; |
c316a17c | 13877 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13878 | { |
04c9666a | 13879 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13880 | bfd_vma addend; |
5bd4f169 AM |
13881 | bfd_reloc_status_type r; |
13882 | Elf_Internal_Sym *sym; | |
13883 | asection *sec; | |
039b3fef AM |
13884 | struct elf_link_hash_entry *h_elf; |
13885 | struct ppc_link_hash_entry *h; | |
13886 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13887 | const char *sym_name; |
0d4792f7 | 13888 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13889 | bfd_vma toc_addend; |
f961d9dd AM |
13890 | unsigned char tls_mask, tls_gd, tls_type; |
13891 | unsigned char sym_type; | |
5bd4f169 | 13892 | bfd_vma relocation; |
23cedd1d | 13893 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 13894 | bfd_boolean warned; |
bc30df16 | 13895 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13896 | unsigned int insn; |
e11840f9 | 13897 | unsigned int mask; |
721956f4 AM |
13898 | struct ppc_stub_hash_entry *stub_entry; |
13899 | bfd_vma max_br_offset; | |
13900 | bfd_vma from; | |
c316a17c | 13901 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13902 | reloc_howto_type *howto; |
13903 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
13904 | uint64_t pinsn; |
13905 | bfd_vma offset; | |
5bd4f169 | 13906 | |
c316a17c AM |
13907 | again: |
13908 | orig_rel = *rel; | |
13909 | ||
4ce794b7 | 13910 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13911 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13912 | |
13913 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13914 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13915 | proper TOC base to use. */ | |
13916 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13917 | && wrel != relocs |
13918 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13919 | && is_opd) |
c316a17c | 13920 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13921 | |
4ce794b7 AM |
13922 | sym = NULL; |
13923 | sec = NULL; | |
039b3fef | 13924 | h_elf = NULL; |
4ce794b7 | 13925 | sym_name = NULL; |
b34976b6 AM |
13926 | unresolved_reloc = FALSE; |
13927 | warned = FALSE; | |
65f38f15 | 13928 | |
0b13192e | 13929 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13930 | { |
13931 | /* It's a local symbol. */ | |
74f0fb50 | 13932 | struct _opd_sec_data *opd; |
4025353c | 13933 | |
5bd4f169 AM |
13934 | sym = local_syms + r_symndx; |
13935 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13936 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13937 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13938 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13939 | opd = get_opd_info (sec); |
13940 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13941 | { |
51aecdc5 AM |
13942 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
13943 | + rel->r_addend)]; | |
4025353c AM |
13944 | if (adjust == -1) |
13945 | relocation = 0; | |
13946 | else | |
4cc603a5 AM |
13947 | { |
13948 | /* If this is a relocation against the opd section sym | |
13949 | and we have edited .opd, adjust the reloc addend so | |
13950 | that ld -r and ld --emit-relocs output is correct. | |
13951 | If it is a reloc against some other .opd symbol, | |
13952 | then the symbol value will be adjusted later. */ | |
13953 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13954 | rel->r_addend += adjust; | |
13955 | else | |
13956 | relocation += adjust; | |
13957 | } | |
1e2f5b6e | 13958 | } |
5bd4f169 AM |
13959 | } |
13960 | else | |
13961 | { | |
62d887d4 L |
13962 | bfd_boolean ignored; |
13963 | ||
b2a8e766 AM |
13964 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13965 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13966 | h_elf, sec, relocation, |
62d887d4 | 13967 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13968 | sym_name = h_elf->root.root.string; |
13969 | sym_type = h_elf->type; | |
b69fdb4e AM |
13970 | if (sec != NULL |
13971 | && sec->owner == output_bfd | |
13972 | && strcmp (sec->name, ".opd") == 0) | |
13973 | { | |
13974 | /* This is a symbol defined in a linker script. All | |
13975 | such are defined in output sections, even those | |
13976 | defined by simple assignment from a symbol defined in | |
13977 | an input section. Transfer the symbol to an | |
13978 | appropriate input .opd section, so that a branch to | |
13979 | this symbol will be mapped to the location specified | |
13980 | by the opd entry. */ | |
13981 | struct bfd_link_order *lo; | |
13982 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13983 | if (lo->type == bfd_indirect_link_order) | |
13984 | { | |
13985 | asection *isec = lo->u.indirect.section; | |
13986 | if (h_elf->root.u.def.value >= isec->output_offset | |
13987 | && h_elf->root.u.def.value < (isec->output_offset | |
13988 | + isec->size)) | |
13989 | { | |
13990 | h_elf->root.u.def.value -= isec->output_offset; | |
13991 | h_elf->root.u.def.section = isec; | |
13992 | sec = isec; | |
13993 | break; | |
13994 | } | |
13995 | } | |
13996 | } | |
5bd4f169 | 13997 | } |
039b3fef | 13998 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13999 | |
dbaa2011 | 14000 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14001 | { |
14002 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14003 | input_bfd, input_section, | |
0930cb30 | 14004 | contents, rel->r_offset); |
c316a17c AM |
14005 | wrel->r_offset = rel->r_offset; |
14006 | wrel->r_info = 0; | |
14007 | wrel->r_addend = 0; | |
14008 | ||
14009 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14010 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14011 | non-debug to preserve relocs in .eh_frame which the |
14012 | eh_frame editing code expects to be present. */ | |
14013 | if (bfd_link_relocatable (info) | |
14014 | && (input_section->flags & SEC_DEBUGGING)) | |
14015 | wrel--; | |
14016 | ||
14017 | continue; | |
14018 | } | |
ab96bf03 | 14019 | |
0e1862bb | 14020 | if (bfd_link_relocatable (info)) |
c316a17c | 14021 | goto copy_reloc; |
ab96bf03 | 14022 | |
f40da81b AM |
14023 | if (h != NULL && &h->elf == htab->elf.hgot) |
14024 | { | |
6f20ed8a | 14025 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14026 | sec = bfd_abs_section_ptr; |
14027 | unresolved_reloc = FALSE; | |
14028 | } | |
14029 | ||
951fd09b AM |
14030 | /* TLS optimizations. Replace instruction sequences and relocs |
14031 | based on information we collected in tls_optimize. We edit | |
14032 | RELOCS so that --emit-relocs will output something sensible | |
14033 | for the final instruction stream. */ | |
14034 | tls_mask = 0; | |
14035 | tls_gd = 0; | |
0d4792f7 | 14036 | toc_symndx = 0; |
727fc41e AM |
14037 | if (h != NULL) |
14038 | tls_mask = h->tls_mask; | |
14039 | else if (local_got_ents != NULL) | |
411e1bfb | 14040 | { |
e054468f AM |
14041 | struct plt_entry **local_plt = (struct plt_entry **) |
14042 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14043 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14044 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14045 | tls_mask = lgot_masks[r_symndx]; |
14046 | } | |
37da22e5 | 14047 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14048 | && (r_type == R_PPC64_TLS |
14049 | || r_type == R_PPC64_TLSGD | |
14050 | || r_type == R_PPC64_TLSLD)) | |
14051 | { | |
14052 | /* Check for toc tls entries. */ | |
f961d9dd | 14053 | unsigned char *toc_tls; |
0d4792f7 | 14054 | |
727fc41e AM |
14055 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14056 | &local_syms, rel, input_bfd)) | |
14057 | return FALSE; | |
0d4792f7 | 14058 | |
727fc41e AM |
14059 | if (toc_tls) |
14060 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14061 | } |
14062 | ||
14063 | /* Check that tls relocs are used with tls syms, and non-tls | |
14064 | relocs are used with non-tls syms. */ | |
cf35638d | 14065 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14066 | && r_type != R_PPC64_NONE |
14067 | && (h == NULL | |
039b3fef AM |
14068 | || h->elf.root.type == bfd_link_hash_defined |
14069 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
14070 | && (IS_PPC64_TLS_RELOC (r_type) |
14071 | != (sym_type == STT_TLS | |
14072 | || (sym_type == STT_SECTION | |
14073 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 14074 | { |
37da22e5 | 14075 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14076 | && (r_type == R_PPC64_TLS |
14077 | || r_type == R_PPC64_TLSGD | |
14078 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14079 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14080 | ; | |
14081 | else | |
25f53a85 | 14082 | info->callbacks->einfo |
1d483afe | 14083 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14084 | /* xgettext:c-format */ |
c1c8c1ef | 14085 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14086 | /* xgettext:c-format */ |
c1c8c1ef | 14087 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14088 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14089 | ppc64_elf_howto_table[r_type]->name, |
14090 | sym_name); | |
411e1bfb AM |
14091 | } |
14092 | ||
14093 | /* Ensure reloc mapping code below stays sane. */ | |
14094 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14095 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14096 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14097 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14098 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14099 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14100 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14101 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14102 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14103 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14104 | abort (); | |
0d4792f7 | 14105 | |
411e1bfb AM |
14106 | switch (r_type) |
14107 | { | |
14108 | default: | |
411e1bfb AM |
14109 | break; |
14110 | ||
ba761f19 | 14111 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14112 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14113 | if ((insn & (0x3f << 26)) != 58u << 26) |
14114 | abort (); | |
14115 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14116 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14117 | r_type = R_PPC64_TOC16_LO; |
14118 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14119 | break; | |
14120 | ||
411e1bfb AM |
14121 | case R_PPC64_TOC16: |
14122 | case R_PPC64_TOC16_LO: | |
14123 | case R_PPC64_TOC16_DS: | |
14124 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14125 | { |
14126 | /* Check for toc tls entries. */ | |
f961d9dd | 14127 | unsigned char *toc_tls; |
951fd09b | 14128 | int retval; |
411e1bfb | 14129 | |
3a71aa26 AM |
14130 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14131 | &local_syms, rel, input_bfd); | |
951fd09b | 14132 | if (retval == 0) |
411e1bfb AM |
14133 | return FALSE; |
14134 | ||
14135 | if (toc_tls) | |
14136 | { | |
951fd09b | 14137 | tls_mask = *toc_tls; |
411e1bfb AM |
14138 | if (r_type == R_PPC64_TOC16_DS |
14139 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14140 | { |
37da22e5 | 14141 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14142 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14143 | goto toctprel; | |
14144 | } | |
411e1bfb | 14145 | else |
951fd09b AM |
14146 | { |
14147 | /* If we found a GD reloc pair, then we might be | |
14148 | doing a GD->IE transition. */ | |
14149 | if (retval == 2) | |
14150 | { | |
14151 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
14152 | if ((tls_mask & TLS_TLS) != 0 |
14153 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14154 | goto tls_ldgd_opt; |
951fd09b AM |
14155 | } |
14156 | else if (retval == 3) | |
14157 | { | |
37da22e5 AM |
14158 | if ((tls_mask & TLS_TLS) != 0 |
14159 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14160 | goto tls_ldgd_opt; |
951fd09b AM |
14161 | } |
14162 | } | |
411e1bfb AM |
14163 | } |
14164 | } | |
14165 | break; | |
14166 | ||
9d6ded02 AM |
14167 | case R_PPC64_GOT_TPREL16_HI: |
14168 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 14169 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
14170 | && (tls_mask & TLS_TPREL) == 0) |
14171 | { | |
14172 | rel->r_offset -= d_offset; | |
95f0d0d2 | 14173 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
14174 | r_type = R_PPC64_NONE; |
14175 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14176 | } | |
14177 | break; | |
14178 | ||
411e1bfb AM |
14179 | case R_PPC64_GOT_TPREL16_DS: |
14180 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 14181 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14182 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14183 | { |
81407a69 | 14184 | toctprel: |
95f0d0d2 | 14185 | insn = bfd_get_32 (input_bfd, |
c316a17c | 14186 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
14187 | insn &= 31 << 21; |
14188 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 14189 | bfd_put_32 (input_bfd, insn, |
c316a17c | 14190 | contents + rel->r_offset - d_offset); |
411e1bfb | 14191 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
14192 | if (toc_symndx != 0) |
14193 | { | |
14194 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14195 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14196 | /* We changed the symbol. Start over in order to |
14197 | get h, sym, sec etc. right. */ | |
c316a17c | 14198 | goto again; |
0d4792f7 AM |
14199 | } |
14200 | else | |
14201 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14202 | } |
14203 | break; | |
14204 | ||
14205 | case R_PPC64_TLS: | |
37da22e5 | 14206 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14207 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14208 | { |
95f0d0d2 | 14209 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
14210 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
14211 | if (insn == 0) | |
411e1bfb | 14212 | abort (); |
95f0d0d2 | 14213 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 14214 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
14215 | PPC64_TPREL16_LO which is at low-order half-word. */ |
14216 | rel->r_offset += d_offset; | |
0d4792f7 AM |
14217 | r_type = R_PPC64_TPREL16_LO; |
14218 | if (toc_symndx != 0) | |
14219 | { | |
14220 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14221 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14222 | /* We changed the symbol. Start over in order to |
14223 | get h, sym, sec etc. right. */ | |
c316a17c | 14224 | goto again; |
0d4792f7 AM |
14225 | } |
14226 | else | |
14227 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14228 | } |
14229 | break; | |
14230 | ||
411e1bfb AM |
14231 | case R_PPC64_GOT_TLSGD16_HI: |
14232 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14233 | tls_gd = TLS_TPRELGD; |
37da22e5 | 14234 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
14235 | goto tls_gdld_hi; |
14236 | break; | |
14237 | ||
411e1bfb AM |
14238 | case R_PPC64_GOT_TLSLD16_HI: |
14239 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 14240 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 14241 | { |
951fd09b AM |
14242 | tls_gdld_hi: |
14243 | if ((tls_mask & tls_gd) != 0) | |
14244 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14245 | + R_PPC64_GOT_TPREL16_DS); | |
14246 | else | |
411e1bfb | 14247 | { |
4fe5ca5b | 14248 | rel->r_offset -= d_offset; |
95f0d0d2 | 14249 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 14250 | r_type = R_PPC64_NONE; |
411e1bfb | 14251 | } |
951fd09b | 14252 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
14253 | } |
14254 | break; | |
14255 | ||
951fd09b AM |
14256 | case R_PPC64_GOT_TLSGD16: |
14257 | case R_PPC64_GOT_TLSGD16_LO: | |
14258 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 14259 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 14260 | goto tls_ldgd_opt; |
951fd09b | 14261 | break; |
411e1bfb | 14262 | |
951fd09b AM |
14263 | case R_PPC64_GOT_TLSLD16: |
14264 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 14265 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 14266 | { |
b9f04fe0 | 14267 | unsigned int insn1, insn2; |
102890f0 AM |
14268 | |
14269 | tls_ldgd_opt: | |
727fc41e AM |
14270 | offset = (bfd_vma) -1; |
14271 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
14272 | __tls_get_addr calls, we must trust that the call | |
14273 | stays with its arg setup insns, ie. that the next | |
14274 | reloc is the __tls_get_addr call associated with | |
14275 | the current reloc. Edit both insns. */ | |
14276 | if (input_section->has_tls_get_addr_call | |
14277 | && rel + 1 < relend | |
14278 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
14279 | htab->tls_get_addr, | |
14280 | htab->tls_get_addr_fd)) | |
14281 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
14282 | /* We read the low GOT_TLS (or TOC16) insn because we |
14283 | need to keep the destination reg. It may be | |
14284 | something other than the usual r3, and moved to r3 | |
14285 | before the call by intervening code. */ | |
95f0d0d2 | 14286 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 14287 | contents + rel->r_offset - d_offset); |
102890f0 | 14288 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 14289 | { |
102890f0 | 14290 | /* IE */ |
b86ac8e3 | 14291 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
14292 | insn1 |= 58 << 26; /* ld */ |
14293 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 14294 | if (offset != (bfd_vma) -1) |
f58d5a2d | 14295 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
14296 | if ((tls_mask & TLS_EXPLICIT) == 0) |
14297 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14298 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 14299 | else |
102890f0 AM |
14300 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
14301 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14302 | } | |
14303 | else | |
14304 | { | |
14305 | /* LE */ | |
b86ac8e3 AM |
14306 | insn1 &= 0x1f << 21; |
14307 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
14308 | insn2 = 0x38630000; /* addi 3,3,0 */ |
14309 | if (tls_gd == 0) | |
951fd09b | 14310 | { |
102890f0 | 14311 | /* Was an LD reloc. */ |
1d483afe AM |
14312 | if (toc_symndx) |
14313 | sec = local_sections[toc_symndx]; | |
14314 | for (r_symndx = 0; | |
14315 | r_symndx < symtab_hdr->sh_info; | |
14316 | r_symndx++) | |
14317 | if (local_sections[r_symndx] == sec) | |
14318 | break; | |
14319 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14320 | r_symndx = STN_UNDEF; |
102890f0 | 14321 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14322 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
14323 | rel->r_addend -= (local_syms[r_symndx].st_value |
14324 | + sec->output_offset | |
14325 | + sec->output_section->vma); | |
951fd09b | 14326 | } |
102890f0 | 14327 | else if (toc_symndx != 0) |
3a71aa26 AM |
14328 | { |
14329 | r_symndx = toc_symndx; | |
14330 | rel->r_addend = toc_addend; | |
14331 | } | |
102890f0 AM |
14332 | r_type = R_PPC64_TPREL16_HA; |
14333 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
14334 | if (offset != (bfd_vma) -1) |
14335 | { | |
14336 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
14337 | R_PPC64_TPREL16_LO); | |
14338 | rel[1].r_offset = offset + d_offset; | |
14339 | rel[1].r_addend = rel->r_addend; | |
14340 | } | |
102890f0 | 14341 | } |
95f0d0d2 | 14342 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 14343 | contents + rel->r_offset - d_offset); |
727fc41e | 14344 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
14345 | { |
14346 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
14347 | if (offset + 8 <= input_section->size) | |
14348 | { | |
14349 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
14350 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
14351 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
14352 | } | |
14353 | } | |
727fc41e AM |
14354 | if ((tls_mask & tls_gd) == 0 |
14355 | && (tls_gd == 0 || toc_symndx != 0)) | |
14356 | { | |
14357 | /* We changed the symbol. Start over in order | |
14358 | to get h, sym, sec etc. right. */ | |
c316a17c | 14359 | goto again; |
727fc41e AM |
14360 | } |
14361 | } | |
14362 | break; | |
14363 | ||
14364 | case R_PPC64_TLSGD: | |
37da22e5 | 14365 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 14366 | && rel + 1 < relend) |
727fc41e | 14367 | { |
b9f04fe0 | 14368 | unsigned int insn2; |
5663e321 | 14369 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 14370 | |
4a421c53 | 14371 | offset = rel->r_offset; |
5663e321 | 14372 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
14373 | { |
14374 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
14375 | if (r_type1 == R_PPC64_PLT_PCREL34 |
14376 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
14377 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
14378 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
14379 | break; | |
14380 | } | |
14381 | ||
14382 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14383 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14384 | ||
727fc41e AM |
14385 | if ((tls_mask & TLS_TPRELGD) != 0) |
14386 | { | |
14387 | /* IE */ | |
14388 | r_type = R_PPC64_NONE; | |
14389 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
14390 | } | |
14391 | else | |
14392 | { | |
14393 | /* LE */ | |
14394 | if (toc_symndx != 0) | |
14395 | { | |
14396 | r_symndx = toc_symndx; | |
14397 | rel->r_addend = toc_addend; | |
14398 | } | |
14399 | r_type = R_PPC64_TPREL16_LO; | |
14400 | rel->r_offset = offset + d_offset; | |
14401 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
14402 | } | |
14403 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14404 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14405 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14406 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 14407 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 14408 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 14409 | goto again; |
411e1bfb | 14410 | } |
411e1bfb AM |
14411 | break; |
14412 | ||
727fc41e | 14413 | case R_PPC64_TLSLD: |
37da22e5 | 14414 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 14415 | && rel + 1 < relend) |
727fc41e | 14416 | { |
b9f04fe0 | 14417 | unsigned int insn2; |
5663e321 | 14418 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 14419 | |
4a421c53 | 14420 | offset = rel->r_offset; |
5663e321 | 14421 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
14422 | { |
14423 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
14424 | if (r_type1 == R_PPC64_PLT_PCREL34 |
14425 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
14426 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
14427 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
14428 | break; | |
14429 | } | |
14430 | ||
14431 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14432 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14433 | ||
727fc41e AM |
14434 | if (toc_symndx) |
14435 | sec = local_sections[toc_symndx]; | |
14436 | for (r_symndx = 0; | |
14437 | r_symndx < symtab_hdr->sh_info; | |
14438 | r_symndx++) | |
14439 | if (local_sections[r_symndx] == sec) | |
14440 | break; | |
14441 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14442 | r_symndx = STN_UNDEF; |
727fc41e | 14443 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14444 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
14445 | rel->r_addend -= (local_syms[r_symndx].st_value |
14446 | + sec->output_offset | |
14447 | + sec->output_section->vma); | |
14448 | ||
14449 | r_type = R_PPC64_TPREL16_LO; | |
14450 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14451 | rel->r_offset = offset + d_offset; | |
14452 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14453 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14454 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 14455 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 14456 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 14457 | goto again; |
727fc41e AM |
14458 | } |
14459 | break; | |
14460 | ||
411e1bfb | 14461 | case R_PPC64_DTPMOD64: |
951fd09b AM |
14462 | if (rel + 1 < relend |
14463 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
14464 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 14465 | { |
951fd09b AM |
14466 | if ((tls_mask & TLS_GD) == 0) |
14467 | { | |
14468 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
14469 | if ((tls_mask & TLS_TPRELGD) != 0) | |
14470 | r_type = R_PPC64_TPREL64; | |
14471 | else | |
14472 | { | |
4ce794b7 | 14473 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
14474 | r_type = R_PPC64_NONE; |
14475 | } | |
14476 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14477 | } | |
14478 | } | |
14479 | else | |
14480 | { | |
14481 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 14482 | { |
4ce794b7 | 14483 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 14484 | r_type = R_PPC64_NONE; |
951fd09b | 14485 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 14486 | } |
411e1bfb AM |
14487 | } |
14488 | break; | |
14489 | ||
14490 | case R_PPC64_TPREL64: | |
951fd09b | 14491 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
14492 | { |
14493 | r_type = R_PPC64_NONE; | |
14494 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14495 | } | |
14496 | break; | |
52a82034 | 14497 | |
006589cf AM |
14498 | case R_PPC64_ENTRY: |
14499 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14500 | if (!bfd_link_pic (info) | |
14501 | && !info->traditional_format | |
14502 | && relocation + 0x80008000 <= 0xffffffff) | |
14503 | { | |
14504 | unsigned int insn1, insn2; | |
14505 | ||
14506 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14507 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14508 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14509 | && insn2 == ADD_R2_R2_R12) | |
14510 | { | |
95f0d0d2 | 14511 | bfd_put_32 (input_bfd, |
006589cf AM |
14512 | LIS_R2 + PPC_HA (relocation), |
14513 | contents + rel->r_offset); | |
95f0d0d2 | 14514 | bfd_put_32 (input_bfd, |
006589cf AM |
14515 | ADDI_R2_R2 + PPC_LO (relocation), |
14516 | contents + rel->r_offset + 4); | |
14517 | } | |
14518 | } | |
14519 | else | |
14520 | { | |
14521 | relocation -= (rel->r_offset | |
14522 | + input_section->output_offset | |
14523 | + input_section->output_section->vma); | |
14524 | if (relocation + 0x80008000 <= 0xffffffff) | |
14525 | { | |
14526 | unsigned int insn1, insn2; | |
14527 | ||
14528 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14529 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14530 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14531 | && insn2 == ADD_R2_R2_R12) | |
14532 | { | |
95f0d0d2 | 14533 | bfd_put_32 (input_bfd, |
006589cf AM |
14534 | ADDIS_R2_R12 + PPC_HA (relocation), |
14535 | contents + rel->r_offset); | |
95f0d0d2 | 14536 | bfd_put_32 (input_bfd, |
006589cf AM |
14537 | ADDI_R2_R2 + PPC_LO (relocation), |
14538 | contents + rel->r_offset + 4); | |
14539 | } | |
14540 | } | |
14541 | } | |
14542 | break; | |
14543 | ||
52a82034 AM |
14544 | case R_PPC64_REL16_HA: |
14545 | /* If we are generating a non-PIC executable, edit | |
14546 | . 0: addis 2,12,.TOC.-0b@ha | |
14547 | . addi 2,2,.TOC.-0b@l | |
14548 | used by ELFv2 global entry points to set up r2, to | |
14549 | . lis 2,.TOC.@ha | |
14550 | . addi 2,2,.TOC.@l | |
14551 | if .TOC. is in range. */ | |
0e1862bb | 14552 | if (!bfd_link_pic (info) |
810d4e75 | 14553 | && !info->traditional_format |
006589cf | 14554 | && !htab->opd_abi |
4f038ee5 | 14555 | && rel->r_addend == d_offset |
52a82034 AM |
14556 | && h != NULL && &h->elf == htab->elf.hgot |
14557 | && rel + 1 < relend | |
14558 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14559 | && rel[1].r_offset == rel->r_offset + 4 | |
14560 | && rel[1].r_addend == rel->r_addend + 4 | |
14561 | && relocation + 0x80008000 <= 0xffffffff) | |
14562 | { | |
14563 | unsigned int insn1, insn2; | |
4a421c53 | 14564 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
14565 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14566 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14567 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14568 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14569 | { |
14570 | r_type = R_PPC64_ADDR16_HA; | |
14571 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14572 | rel->r_addend -= d_offset; | |
14573 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14574 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14575 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14576 | } |
14577 | } | |
14578 | break; | |
411e1bfb AM |
14579 | } |
14580 | ||
14581 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14582 | insn = 0; |
b25116a9 AM |
14583 | max_br_offset = 1 << 25; |
14584 | addend = rel->r_addend; | |
bc30df16 | 14585 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14586 | switch (r_type) |
5bd4f169 AM |
14587 | { |
14588 | default: | |
65f38f15 | 14589 | break; |
5bd4f169 | 14590 | |
3b421ab3 AM |
14591 | case R_PPC64_TOCSAVE: |
14592 | if (relocation + addend == (rel->r_offset | |
14593 | + input_section->output_offset | |
14594 | + input_section->output_section->vma) | |
14595 | && tocsave_find (htab, NO_INSERT, | |
14596 | &local_syms, rel, input_bfd)) | |
14597 | { | |
14598 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14599 | if (insn == NOP | |
14600 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14601 | bfd_put_32 (input_bfd, |
14602 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14603 | contents + rel->r_offset); |
14604 | } | |
14605 | break; | |
14606 | ||
65f38f15 AM |
14607 | /* Branch taken prediction relocations. */ |
14608 | case R_PPC64_ADDR14_BRTAKEN: | |
14609 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14610 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14611 | /* Fall through. */ |
65f38f15 | 14612 | |
86c76c7b | 14613 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14614 | case R_PPC64_ADDR14_BRNTAKEN: |
14615 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14616 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14617 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14618 | /* Fall through. */ |
86c76c7b | 14619 | |
b25116a9 AM |
14620 | case R_PPC64_REL14: |
14621 | max_br_offset = 1 << 15; | |
1a0670f3 | 14622 | /* Fall through. */ |
5bd4f169 | 14623 | |
65f38f15 | 14624 | case R_PPC64_REL24: |
05d0e962 | 14625 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 14626 | case R_PPC64_PLTCALL: |
5663e321 | 14627 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
14628 | /* Calls to functions with a different TOC, such as calls to |
14629 | shared objects, need to alter the TOC pointer. This is | |
14630 | done using a linkage stub. A REL24 branching to these | |
14631 | linkage stubs needs to be followed by a nop, as the nop | |
14632 | will be replaced with an instruction to restore the TOC | |
14633 | base pointer. */ | |
8387904d | 14634 | fdh = h; |
b31867b6 AM |
14635 | if (h != NULL |
14636 | && h->oh != NULL | |
14637 | && h->oh->is_func_descriptor) | |
14638 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14639 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14640 | htab); | |
5663e321 AM |
14641 | if ((r_type == R_PPC64_PLTCALL |
14642 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 14643 | && stub_entry != NULL |
05d0e962 AM |
14644 | && stub_entry->stub_type >= ppc_stub_plt_call |
14645 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
14646 | stub_entry = NULL; |
14647 | ||
6abec6bc | 14648 | if (stub_entry != NULL |
d0abeec8 AM |
14649 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
14650 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 14651 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
14652 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
14653 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
14654 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 14655 | { |
b25116a9 | 14656 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14657 | |
6e1816be AM |
14658 | if (stub_entry->stub_type == ppc_stub_plt_call |
14659 | && !htab->opd_abi | |
14660 | && htab->params->plt_localentry0 != 0 | |
14661 | && is_elfv2_localentry0 (&h->elf)) | |
14662 | { | |
14663 | /* The function doesn't use or change r2. */ | |
14664 | can_plt_call = TRUE; | |
14665 | } | |
05d0e962 AM |
14666 | else if (r_type == R_PPC64_REL24_NOTOC) |
14667 | { | |
14668 | /* NOTOC calls don't need to restore r2. */ | |
14669 | can_plt_call = TRUE; | |
14670 | } | |
6e1816be | 14671 | |
f378ab09 | 14672 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
14673 | branch and link followed by a nop. The nop is |
14674 | replaced by an insn to restore r2. */ | |
6e1816be | 14675 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14676 | { |
ba8ca3e7 AM |
14677 | unsigned long br; |
14678 | ||
14679 | br = bfd_get_32 (input_bfd, | |
14680 | contents + rel->r_offset); | |
14681 | if ((br & 1) != 0) | |
41bd81ab | 14682 | { |
ba8ca3e7 AM |
14683 | unsigned long nop; |
14684 | ||
14685 | nop = bfd_get_32 (input_bfd, | |
14686 | contents + rel->r_offset + 4); | |
23cedd1d AM |
14687 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
14688 | can_plt_call = TRUE; | |
14689 | else if (nop == NOP | |
14690 | || nop == CROR_151515 | |
14691 | || nop == CROR_313131) | |
a7f2871e | 14692 | { |
ba8ca3e7 AM |
14693 | if (h != NULL |
14694 | && (h == htab->tls_get_addr_fd | |
14695 | || h == htab->tls_get_addr) | |
7c9cf415 | 14696 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14697 | { |
14698 | /* Special stub used, leave nop alone. */ | |
14699 | } | |
14700 | else | |
a078d95a AM |
14701 | bfd_put_32 (input_bfd, |
14702 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14703 | contents + rel->r_offset + 4); |
14704 | can_plt_call = TRUE; | |
a7f2871e | 14705 | } |
41bd81ab | 14706 | } |
5bd4f169 | 14707 | } |
721956f4 | 14708 | |
ba8ca3e7 | 14709 | if (!can_plt_call && h != NULL) |
721956f4 | 14710 | { |
ba8ca3e7 AM |
14711 | const char *name = h->elf.root.root.string; |
14712 | ||
14713 | if (*name == '.') | |
14714 | ++name; | |
14715 | ||
14716 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14717 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14718 | { |
ba8ca3e7 AM |
14719 | /* Allow crt1 branch to go via a toc adjusting |
14720 | stub. Other calls that never return could do | |
14721 | the same, if we could detect such. */ | |
b25116a9 | 14722 | can_plt_call = TRUE; |
6ab189d5 | 14723 | } |
ba8ca3e7 AM |
14724 | } |
14725 | ||
14726 | if (!can_plt_call) | |
14727 | { | |
14728 | /* g++ as of 20130507 emits self-calls without a | |
14729 | following nop. This is arguably wrong since we | |
14730 | have conflicting information. On the one hand a | |
14731 | global symbol and on the other a local call | |
14732 | sequence, but don't error for this special case. | |
14733 | It isn't possible to cheaply verify we have | |
14734 | exactly such a call. Allow all calls to the same | |
14735 | section. */ | |
14736 | asection *code_sec = sec; | |
14737 | ||
14738 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14739 | { |
ba8ca3e7 AM |
14740 | bfd_vma off = (relocation + addend |
14741 | - sec->output_section->vma | |
14742 | - sec->output_offset); | |
bc30df16 | 14743 | |
ba8ca3e7 | 14744 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14745 | } |
ba8ca3e7 AM |
14746 | if (code_sec == input_section) |
14747 | can_plt_call = TRUE; | |
14748 | } | |
14749 | ||
14750 | if (!can_plt_call) | |
14751 | { | |
05d0e962 AM |
14752 | if (stub_entry->stub_type >= ppc_stub_plt_call |
14753 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 14754 | info->callbacks->einfo |
695344c0 | 14755 | /* xgettext:c-format */ |
c1c8c1ef | 14756 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 14757 | "(plt call stub)\n"), |
4805fc55 AM |
14758 | input_bfd, input_section, rel->r_offset, sym_name); |
14759 | else | |
14760 | info->callbacks->einfo | |
695344c0 | 14761 | /* xgettext:c-format */ |
c1c8c1ef | 14762 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 14763 | "(toc save/adjust stub)\n"), |
4805fc55 | 14764 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
14765 | |
14766 | bfd_set_error (bfd_error_bad_value); | |
14767 | ret = FALSE; | |
721956f4 AM |
14768 | } |
14769 | ||
b25116a9 | 14770 | if (can_plt_call |
05d0e962 AM |
14771 | && stub_entry->stub_type >= ppc_stub_plt_call |
14772 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
14773 | unresolved_reloc = FALSE; |
14774 | } | |
14775 | ||
6abec6bc AM |
14776 | if ((stub_entry == NULL |
14777 | || stub_entry->stub_type == ppc_stub_long_branch | |
14778 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14779 | && get_opd_info (sec) != NULL) |
14780 | { | |
14781 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14782 | bfd_vma off = (relocation + addend |
14783 | - sec->output_section->vma | |
14784 | - sec->output_offset); | |
aef36ac1 | 14785 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14786 | if (dest != (bfd_vma) -1) |
14787 | { | |
14788 | relocation = dest; | |
14789 | addend = 0; | |
bc30df16 | 14790 | reloc_dest = DEST_OPD; |
8387904d AM |
14791 | } |
14792 | } | |
14793 | ||
b25116a9 AM |
14794 | /* If the branch is out of reach we ought to have a long |
14795 | branch stub. */ | |
14796 | from = (rel->r_offset | |
14797 | + input_section->output_offset | |
14798 | + input_section->output_section->vma); | |
14799 | ||
6911b7dc AM |
14800 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14801 | ? fdh->elf.other | |
14802 | : sym->st_other); | |
14803 | ||
6abec6bc AM |
14804 | if (stub_entry != NULL |
14805 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14806 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14807 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14808 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14809 | || (relocation + addend - from + max_br_offset | |
14810 | < 2 * max_br_offset))) | |
14811 | /* Don't use the stub if this branch is in range. */ | |
14812 | stub_entry = NULL; | |
b25116a9 | 14813 | |
05d0e962 AM |
14814 | if (stub_entry != NULL |
14815 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
14816 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
14817 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
14818 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
14819 | && (r_type != R_PPC64_REL24_NOTOC | |
14820 | || ((fdh ? fdh->elf.other : sym->st_other) | |
14821 | & STO_PPC64_LOCAL_MASK) == 1 << STO_PPC64_LOCAL_BIT) | |
14822 | && (relocation + addend - from + max_br_offset | |
14823 | < 2 * max_br_offset)) | |
14824 | stub_entry = NULL; | |
14825 | ||
14826 | if (stub_entry != NULL | |
14827 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
14828 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
14829 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
14830 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
14831 | && r_type == R_PPC64_REL24_NOTOC | |
14832 | && (relocation + addend - from + max_br_offset | |
14833 | < 2 * max_br_offset)) | |
14834 | stub_entry = NULL; | |
14835 | ||
b25116a9 AM |
14836 | if (stub_entry != NULL) |
14837 | { | |
14838 | /* Munge up the value and addend so that we call the stub | |
14839 | rather than the procedure directly. */ | |
a4b6fadd AM |
14840 | asection *stub_sec = stub_entry->group->stub_sec; |
14841 | ||
14842 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14843 | relocation += (stub_sec->output_offset | |
14844 | + stub_sec->output_section->vma | |
14845 | + stub_sec->size - htab->sfpr->size | |
14846 | - htab->sfpr->output_offset | |
14847 | - htab->sfpr->output_section->vma); | |
14848 | else | |
14849 | relocation = (stub_entry->stub_offset | |
14850 | + stub_sec->output_offset | |
14851 | + stub_sec->output_section->vma); | |
b25116a9 | 14852 | addend = 0; |
bc30df16 | 14853 | reloc_dest = DEST_STUB; |
3b421ab3 | 14854 | |
05d0e962 AM |
14855 | if (((stub_entry->stub_type == ppc_stub_plt_call |
14856 | && ALWAYS_EMIT_R2SAVE) | |
14857 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
14858 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 AM |
14859 | && !(h != NULL |
14860 | && (h == htab->tls_get_addr_fd | |
14861 | || h == htab->tls_get_addr) | |
14862 | && htab->params->tls_get_addr_opt) | |
3b421ab3 AM |
14863 | && rel + 1 < relend |
14864 | && rel[1].r_offset == rel->r_offset + 4 | |
14865 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14866 | relocation += 4; | |
05d0e962 AM |
14867 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
14868 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
14869 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
14870 | && r_type == R_PPC64_REL24_NOTOC) | |
14871 | relocation += 4; | |
5663e321 AM |
14872 | |
14873 | if (r_type == R_PPC64_REL24_NOTOC | |
14874 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
14875 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
14876 | htab->notoc_plt = 1; | |
b25116a9 AM |
14877 | } |
14878 | ||
14879 | if (insn != 0) | |
14880 | { | |
794e51c0 | 14881 | if (is_isa_v2) |
721956f4 | 14882 | { |
b25116a9 AM |
14883 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14884 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14885 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14886 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14887 | insn |= 0x02 << 21; | |
14888 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14889 | insn |= 0x08 << 21; | |
14890 | else | |
14891 | break; | |
14892 | } | |
14893 | else | |
14894 | { | |
14895 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14896 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14897 | insn ^= 0x01 << 21; |
721956f4 | 14898 | } |
b25116a9 | 14899 | |
95f0d0d2 | 14900 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14901 | } |
e86ce104 | 14902 | |
06da1e8e AM |
14903 | /* NOP out calls to undefined weak functions. |
14904 | We can thus call a weak function without first | |
14905 | checking whether the function is defined. */ | |
b25116a9 | 14906 | else if (h != NULL |
039b3fef | 14907 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14908 | && h->elf.dynindx == -1 |
05d0e962 AM |
14909 | && (r_type == R_PPC64_REL24 |
14910 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 14911 | && relocation == 0 |
4cc603a5 | 14912 | && addend == 0) |
e86ce104 | 14913 | { |
95f0d0d2 | 14914 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14915 | goto copy_reloc; |
e86ce104 | 14916 | } |
65f38f15 | 14917 | break; |
066f4018 AM |
14918 | |
14919 | case R_PPC64_GOT16_DS: | |
14920 | from = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14921 | if (relocation + addend - from + 0x8000 < 0x10000 | |
14922 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
14923 | { | |
14924 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
14925 | if ((insn & (0x3f << 26 | 0x3)) == 58u << 26 /* ld */) | |
14926 | { | |
14927 | insn += (14u << 26) - (58u << 26); | |
14928 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
14929 | r_type = R_PPC64_TOC16; | |
14930 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14931 | } | |
14932 | } | |
14933 | break; | |
14934 | ||
14935 | case R_PPC64_GOT16_LO_DS: | |
14936 | case R_PPC64_GOT16_HA: | |
14937 | from = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14938 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
14939 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
14940 | { | |
14941 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
14942 | if ((insn & (0x3f << 26 | 0x3)) == 58u << 26 /* ld */) | |
14943 | { | |
14944 | insn += (14u << 26) - (58u << 26); | |
14945 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
14946 | r_type = R_PPC64_TOC16_LO; | |
14947 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14948 | } | |
14949 | else if ((insn & (0x3f << 26)) == 15u << 26 /* addis */) | |
14950 | { | |
14951 | r_type = R_PPC64_TOC16_HA; | |
14952 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14953 | } | |
14954 | } | |
14955 | break; | |
4a421c53 AM |
14956 | |
14957 | case R_PPC64_GOT_PCREL34: | |
14958 | from = (rel->r_offset | |
14959 | + input_section->output_section->vma | |
14960 | + input_section->output_offset); | |
14961 | if (relocation - from + (1ULL << 33) < 1ULL << 34 | |
14962 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
14963 | { | |
14964 | offset = rel->r_offset; | |
14965 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
14966 | pinsn <<= 32; | |
14967 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
14968 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
14969 | == ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
14970 | { | |
14971 | /* Replace with paddi. */ | |
14972 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
14973 | r_type = R_PPC64_PCREL34; | |
14974 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14975 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
14976 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
14977 | goto pcrelopt; | |
14978 | } | |
14979 | } | |
14980 | break; | |
14981 | ||
14982 | case R_PPC64_PCREL34: | |
14983 | if (SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
14984 | { | |
14985 | offset = rel->r_offset; | |
14986 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
14987 | pinsn <<= 32; | |
14988 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
14989 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
14990 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
14991 | | (14ULL << 26) /* paddi */)) | |
14992 | { | |
14993 | pcrelopt: | |
14994 | if (rel + 1 < relend | |
14995 | && rel[1].r_offset == offset | |
14996 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT)) | |
14997 | { | |
14998 | bfd_vma off2 = rel[1].r_addend; | |
14999 | if (off2 == 0) | |
15000 | /* zero means next insn. */ | |
15001 | off2 = 8; | |
15002 | off2 += offset; | |
15003 | if (off2 + 4 <= input_section->size) | |
15004 | { | |
15005 | uint64_t pinsn2; | |
15006 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); | |
15007 | pinsn2 <<= 32; | |
15008 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
15009 | break; | |
15010 | if (xlate_pcrel_opt (&pinsn, &pinsn2)) | |
15011 | { | |
15012 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15013 | contents + offset); | |
15014 | bfd_put_32 (input_bfd, pinsn, | |
15015 | contents + offset + 4); | |
15016 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
15017 | contents + off2); | |
15018 | } | |
15019 | } | |
15020 | } | |
15021 | } | |
15022 | } | |
15023 | break; | |
65f38f15 | 15024 | } |
5bd4f169 | 15025 | |
65f38f15 | 15026 | /* Set `addend'. */ |
411e1bfb | 15027 | tls_type = 0; |
23cedd1d | 15028 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
15029 | switch (r_type) |
15030 | { | |
15031 | default: | |
cf97bcb0 AM |
15032 | /* xgettext:c-format */ |
15033 | _bfd_error_handler (_("%pB: %s unsupported"), | |
15034 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 15035 | |
65f38f15 | 15036 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15037 | ret = FALSE; |
c316a17c | 15038 | goto copy_reloc; |
5bd4f169 | 15039 | |
65f38f15 | 15040 | case R_PPC64_NONE: |
411e1bfb | 15041 | case R_PPC64_TLS: |
727fc41e AM |
15042 | case R_PPC64_TLSGD: |
15043 | case R_PPC64_TLSLD: | |
3b421ab3 | 15044 | case R_PPC64_TOCSAVE: |
04c9666a AM |
15045 | case R_PPC64_GNU_VTINHERIT: |
15046 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 15047 | case R_PPC64_ENTRY: |
4a421c53 | 15048 | case R_PPC64_PCREL_OPT: |
c316a17c | 15049 | goto copy_reloc; |
5bd4f169 AM |
15050 | |
15051 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
15052 | address in the GOT as relocation value instead of the | |
411e1bfb | 15053 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 15054 | symbol and put the symbol value there. */ |
411e1bfb AM |
15055 | case R_PPC64_GOT_TLSGD16: |
15056 | case R_PPC64_GOT_TLSGD16_LO: | |
15057 | case R_PPC64_GOT_TLSGD16_HI: | |
15058 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 15059 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
15060 | goto dogot; |
15061 | ||
15062 | case R_PPC64_GOT_TLSLD16: | |
15063 | case R_PPC64_GOT_TLSLD16_LO: | |
15064 | case R_PPC64_GOT_TLSLD16_HI: | |
15065 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 15066 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
15067 | goto dogot; |
15068 | ||
15069 | case R_PPC64_GOT_TPREL16_DS: | |
15070 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15071 | case R_PPC64_GOT_TPREL16_HI: | |
15072 | case R_PPC64_GOT_TPREL16_HA: | |
15073 | tls_type = TLS_TLS | TLS_TPREL; | |
15074 | goto dogot; | |
15075 | ||
15076 | case R_PPC64_GOT_DTPREL16_DS: | |
15077 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15078 | case R_PPC64_GOT_DTPREL16_HI: | |
15079 | case R_PPC64_GOT_DTPREL16_HA: | |
15080 | tls_type = TLS_TLS | TLS_DTPREL; | |
15081 | goto dogot; | |
15082 | ||
65f38f15 AM |
15083 | case R_PPC64_GOT16: |
15084 | case R_PPC64_GOT16_LO: | |
15085 | case R_PPC64_GOT16_HI: | |
15086 | case R_PPC64_GOT16_HA: | |
15087 | case R_PPC64_GOT16_DS: | |
15088 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 15089 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 15090 | dogot: |
5bd4f169 AM |
15091 | { |
15092 | /* Relocation is to the entry for this symbol in the global | |
15093 | offset table. */ | |
e717da7e | 15094 | asection *got; |
d881513a | 15095 | bfd_vma *offp; |
5bd4f169 | 15096 | bfd_vma off; |
d881513a | 15097 | unsigned long indx = 0; |
927be08e | 15098 | struct got_entry *ent; |
5663e321 AM |
15099 | bfd_vma sym_addend = orig_rel.r_addend; |
15100 | ||
15101 | if (r_type == R_PPC64_GOT_PCREL34) | |
15102 | sym_addend = 0; | |
65f38f15 | 15103 | |
d881513a AM |
15104 | if (tls_type == (TLS_TLS | TLS_LD) |
15105 | && (h == NULL | |
f5385ebf | 15106 | || !h->elf.def_dynamic)) |
927be08e | 15107 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 15108 | else |
5bd4f169 | 15109 | { |
d881513a AM |
15110 | if (h != NULL) |
15111 | { | |
f0158f44 AM |
15112 | if (!htab->elf.dynamic_sections_created |
15113 | || h->elf.dynindx == -1 | |
15114 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 15115 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
15116 | /* This is actually a static link, or it is a |
15117 | -Bsymbolic link and the symbol is defined | |
15118 | locally, or the symbol was forced to be local | |
15119 | because of a version file. */ | |
15120 | ; | |
15121 | else | |
15122 | { | |
039b3fef | 15123 | indx = h->elf.dynindx; |
d881513a AM |
15124 | unresolved_reloc = FALSE; |
15125 | } | |
039b3fef | 15126 | ent = h->elf.got.glist; |
d881513a | 15127 | } |
411e1bfb | 15128 | else |
5bd4f169 | 15129 | { |
d881513a AM |
15130 | if (local_got_ents == NULL) |
15131 | abort (); | |
15132 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 15133 | } |
d881513a AM |
15134 | |
15135 | for (; ent != NULL; ent = ent->next) | |
5663e321 | 15136 | if (ent->addend == sym_addend |
e717da7e | 15137 | && ent->owner == input_bfd |
d881513a AM |
15138 | && ent->tls_type == tls_type) |
15139 | break; | |
5bd4f169 | 15140 | } |
411e1bfb | 15141 | |
927be08e AM |
15142 | if (ent == NULL) |
15143 | abort (); | |
15144 | if (ent->is_indirect) | |
15145 | ent = ent->got.ent; | |
15146 | offp = &ent->got.offset; | |
15147 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
15148 | if (got == NULL) |
15149 | abort (); | |
15150 | ||
411e1bfb AM |
15151 | /* The offset must always be a multiple of 8. We use the |
15152 | least significant bit to record whether we have already | |
15153 | processed this entry. */ | |
d881513a | 15154 | off = *offp; |
411e1bfb AM |
15155 | if ((off & 1) != 0) |
15156 | off &= ~1; | |
5bd4f169 AM |
15157 | else |
15158 | { | |
411e1bfb AM |
15159 | /* Generate relocs for the dynamic linker, except in |
15160 | the case of TLSLD where we'll use one entry per | |
15161 | module. */ | |
25f23106 AM |
15162 | asection *relgot; |
15163 | bfd_boolean ifunc; | |
e717da7e | 15164 | |
d881513a | 15165 | *offp = off | 1; |
25f23106 AM |
15166 | relgot = NULL; |
15167 | ifunc = (h != NULL | |
15168 | ? h->elf.type == STT_GNU_IFUNC | |
15169 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 15170 | if (ifunc) |
82e66161 AM |
15171 | { |
15172 | relgot = htab->elf.irelplt; | |
15173 | if (indx == 0) | |
15174 | htab->local_ifunc_resolver = 1; | |
15175 | else if (is_static_defined (&h->elf)) | |
15176 | htab->maybe_local_ifunc_resolver = 1; | |
15177 | } | |
f0158f44 AM |
15178 | else if (indx != 0 |
15179 | || (bfd_link_pic (info) | |
15180 | && (h == NULL | |
21d68fcd | 15181 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 15182 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
15183 | && !h->elf.def_dynamic)) |
15184 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
15185 | && bfd_link_executable (info) | |
15186 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 15187 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 15188 | if (relgot != NULL) |
5bd4f169 | 15189 | { |
e717da7e AM |
15190 | outrel.r_offset = (got->output_section->vma |
15191 | + got->output_offset | |
411e1bfb | 15192 | + off); |
5663e321 | 15193 | outrel.r_addend = sym_addend; |
d881513a | 15194 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 15195 | { |
411e1bfb | 15196 | outrel.r_addend = 0; |
e515b051 | 15197 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
15198 | if (tls_type == (TLS_TLS | TLS_GD)) |
15199 | { | |
e717da7e AM |
15200 | loc = relgot->contents; |
15201 | loc += (relgot->reloc_count++ | |
d881513a AM |
15202 | * sizeof (Elf64_External_Rela)); |
15203 | bfd_elf64_swap_reloca_out (output_bfd, | |
15204 | &outrel, loc); | |
e515b051 | 15205 | outrel.r_offset += 8; |
5663e321 | 15206 | outrel.r_addend = sym_addend; |
d881513a AM |
15207 | outrel.r_info |
15208 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 15209 | } |
411e1bfb | 15210 | } |
951fd09b | 15211 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 15212 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 15213 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 15214 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
15215 | else if (indx != 0) |
15216 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
15217 | else | |
81407a69 | 15218 | { |
25f23106 AM |
15219 | if (ifunc) |
15220 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15221 | else | |
15222 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
15223 | |
15224 | /* Write the .got section contents for the sake | |
15225 | of prelink. */ | |
e717da7e | 15226 | loc = got->contents + off; |
23fbd6fa JJ |
15227 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
15228 | loc); | |
81407a69 | 15229 | } |
81407a69 AM |
15230 | |
15231 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
15232 | { |
15233 | outrel.r_addend += relocation; | |
15234 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
15235 | { |
15236 | if (htab->elf.tls_sec == NULL) | |
15237 | outrel.r_addend = 0; | |
15238 | else | |
15239 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
15240 | } | |
e515b051 | 15241 | } |
e717da7e AM |
15242 | loc = relgot->contents; |
15243 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
15244 | * sizeof (Elf64_External_Rela)); |
15245 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
15246 | } | |
15247 | ||
ad8e1ba5 | 15248 | /* Init the .got section contents here if we're not |
81407a69 | 15249 | emitting a reloc. */ |
d881513a | 15250 | else |
411e1bfb | 15251 | { |
5663e321 | 15252 | relocation += sym_addend; |
f0158f44 | 15253 | if (tls_type != 0) |
411e1bfb | 15254 | { |
989f9879 AM |
15255 | if (htab->elf.tls_sec == NULL) |
15256 | relocation = 0; | |
15257 | else | |
15258 | { | |
f0158f44 AM |
15259 | if (tls_type & TLS_LD) |
15260 | relocation = 0; | |
15261 | else | |
15262 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 15263 | if (tls_type & TLS_TPREL) |
989f9879 AM |
15264 | relocation += DTP_OFFSET - TP_OFFSET; |
15265 | } | |
5bd4f169 | 15266 | |
f0158f44 | 15267 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
15268 | { |
15269 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15270 | got->contents + off + 8); |
676ee2b5 | 15271 | relocation = 1; |
7b609f53 | 15272 | } |
411e1bfb AM |
15273 | } |
15274 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15275 | got->contents + off); |
5bd4f169 AM |
15276 | } |
15277 | } | |
15278 | ||
65f38f15 AM |
15279 | if (off >= (bfd_vma) -2) |
15280 | abort (); | |
15281 | ||
bf102f86 | 15282 | relocation = got->output_section->vma + got->output_offset + off; |
5663e321 AM |
15283 | if (r_type != R_PPC64_GOT_PCREL34) |
15284 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); | |
5bd4f169 | 15285 | } |
65f38f15 AM |
15286 | break; |
15287 | ||
15288 | case R_PPC64_PLT16_HA: | |
15289 | case R_PPC64_PLT16_HI: | |
15290 | case R_PPC64_PLT16_LO: | |
08be3224 | 15291 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
15292 | case R_PPC64_PLT_PCREL34: |
15293 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
15294 | case R_PPC64_PLT32: |
15295 | case R_PPC64_PLT64: | |
23cedd1d | 15296 | case R_PPC64_PLTSEQ: |
5663e321 | 15297 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 15298 | case R_PPC64_PLTCALL: |
5663e321 | 15299 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
15300 | /* Relocation is to the entry for this symbol in the |
15301 | procedure linkage table. */ | |
23cedd1d | 15302 | unresolved_reloc = TRUE; |
cbf95972 AM |
15303 | { |
15304 | struct plt_entry **plt_list = NULL; | |
15305 | if (h != NULL) | |
15306 | plt_list = &h->elf.plt.plist; | |
15307 | else if (local_got_ents != NULL) | |
15308 | { | |
15309 | struct plt_entry **local_plt = (struct plt_entry **) | |
15310 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 15311 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
15312 | } |
15313 | if (plt_list) | |
15314 | { | |
15315 | struct plt_entry *ent; | |
5663e321 AM |
15316 | bfd_vma sym_addend = orig_rel.r_addend; |
15317 | ||
15318 | if (r_type == R_PPC64_PLT_PCREL34 | |
15319 | || r_type == R_PPC64_PLT_PCREL34_NOTOC) | |
15320 | sym_addend = 0; | |
65f38f15 | 15321 | |
cbf95972 AM |
15322 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
15323 | if (ent->plt.offset != (bfd_vma) -1 | |
5663e321 | 15324 | && ent->addend == sym_addend) |
cbf95972 AM |
15325 | { |
15326 | asection *plt; | |
08be3224 | 15327 | bfd_vma got; |
cbf95972 AM |
15328 | |
15329 | plt = htab->elf.splt; | |
15330 | if (!htab->elf.dynamic_sections_created | |
15331 | || h == NULL | |
15332 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
15333 | { |
15334 | if (h != NULL | |
15335 | ? h->elf.type == STT_GNU_IFUNC | |
15336 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15337 | plt = htab->elf.iplt; | |
15338 | else | |
15339 | plt = htab->pltlocal; | |
15340 | } | |
15341 | relocation = (plt->output_section->vma | |
15342 | + plt->output_offset | |
15343 | + ent->plt.offset); | |
08be3224 | 15344 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
15345 | || r_type == R_PPC64_PLT16_HI |
15346 | || r_type == R_PPC64_PLT16_LO | |
15347 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
15348 | { |
15349 | got = (elf_gp (output_bfd) | |
15350 | + htab->sec_info[input_section->id].toc_off); | |
15351 | relocation -= got; | |
15352 | } | |
5663e321 AM |
15353 | if (r_type != R_PPC64_PLT_PCREL34 |
15354 | && r_type != R_PPC64_PLT_PCREL34_NOTOC) | |
15355 | addend = 0; | |
cbf95972 AM |
15356 | unresolved_reloc = FALSE; |
15357 | break; | |
15358 | } | |
15359 | } | |
15360 | } | |
65f38f15 | 15361 | break; |
5bd4f169 | 15362 | |
0b13192e AM |
15363 | case R_PPC64_TOC: |
15364 | /* Relocation value is TOC base. */ | |
15365 | relocation = TOCstart; | |
cf35638d | 15366 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 15367 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
15368 | else if (unresolved_reloc) |
15369 | ; | |
6f20ed8a AM |
15370 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
15371 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
15372 | else |
15373 | unresolved_reloc = TRUE; | |
ab96bf03 | 15374 | goto dodyn; |
0b13192e | 15375 | |
5bd4f169 AM |
15376 | /* TOC16 relocs. We want the offset relative to the TOC base, |
15377 | which is the address of the start of the TOC plus 0x8000. | |
15378 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
15379 | in this order. */ | |
65f38f15 AM |
15380 | case R_PPC64_TOC16: |
15381 | case R_PPC64_TOC16_LO: | |
15382 | case R_PPC64_TOC16_HI: | |
15383 | case R_PPC64_TOC16_DS: | |
15384 | case R_PPC64_TOC16_LO_DS: | |
15385 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 15386 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
15387 | break; |
15388 | ||
15389 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
15390 | case R_PPC64_SECTOFF: |
15391 | case R_PPC64_SECTOFF_LO: | |
15392 | case R_PPC64_SECTOFF_HI: | |
15393 | case R_PPC64_SECTOFF_DS: | |
15394 | case R_PPC64_SECTOFF_LO_DS: | |
15395 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 15396 | if (sec != NULL) |
65f38f15 | 15397 | addend -= sec->output_section->vma; |
5bd4f169 AM |
15398 | break; |
15399 | ||
25f23106 AM |
15400 | case R_PPC64_REL16: |
15401 | case R_PPC64_REL16_LO: | |
15402 | case R_PPC64_REL16_HI: | |
15403 | case R_PPC64_REL16_HA: | |
4a969973 AM |
15404 | case R_PPC64_REL16_HIGH: |
15405 | case R_PPC64_REL16_HIGHA: | |
15406 | case R_PPC64_REL16_HIGHER: | |
15407 | case R_PPC64_REL16_HIGHERA: | |
15408 | case R_PPC64_REL16_HIGHEST: | |
15409 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
15410 | case R_PPC64_REL16_HIGHER34: |
15411 | case R_PPC64_REL16_HIGHERA34: | |
15412 | case R_PPC64_REL16_HIGHEST34: | |
15413 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 15414 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
15415 | case R_PPC64_REL14: |
15416 | case R_PPC64_REL14_BRNTAKEN: | |
15417 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 15418 | case R_PPC64_REL24: |
05d0e962 | 15419 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
15420 | case R_PPC64_PCREL34: |
15421 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
15422 | break; |
15423 | ||
411e1bfb AM |
15424 | case R_PPC64_TPREL16: |
15425 | case R_PPC64_TPREL16_LO: | |
15426 | case R_PPC64_TPREL16_HI: | |
15427 | case R_PPC64_TPREL16_HA: | |
15428 | case R_PPC64_TPREL16_DS: | |
15429 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
15430 | case R_PPC64_TPREL16_HIGH: |
15431 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
15432 | case R_PPC64_TPREL16_HIGHER: |
15433 | case R_PPC64_TPREL16_HIGHERA: | |
15434 | case R_PPC64_TPREL16_HIGHEST: | |
15435 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
15436 | if (h != NULL |
15437 | && h->elf.root.type == bfd_link_hash_undefweak | |
15438 | && h->elf.dynindx == -1) | |
15439 | { | |
15440 | /* Make this relocation against an undefined weak symbol | |
15441 | resolve to zero. This is really just a tweak, since | |
15442 | code using weak externs ought to check that they are | |
15443 | defined before using them. */ | |
15444 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
15445 | ||
95f0d0d2 | 15446 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
15447 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
15448 | if (insn != 0) | |
95f0d0d2 | 15449 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
15450 | break; |
15451 | } | |
989f9879 AM |
15452 | if (htab->elf.tls_sec != NULL) |
15453 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
15454 | /* The TPREL16 relocs shouldn't really be used in shared |
15455 | libs or with non-local symbols as that will result in | |
15456 | DT_TEXTREL being set, but support them anyway. */ | |
15457 | goto dodyn; | |
411e1bfb AM |
15458 | |
15459 | case R_PPC64_DTPREL16: | |
15460 | case R_PPC64_DTPREL16_LO: | |
15461 | case R_PPC64_DTPREL16_HI: | |
15462 | case R_PPC64_DTPREL16_HA: | |
15463 | case R_PPC64_DTPREL16_DS: | |
15464 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
15465 | case R_PPC64_DTPREL16_HIGH: |
15466 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
15467 | case R_PPC64_DTPREL16_HIGHER: |
15468 | case R_PPC64_DTPREL16_HIGHERA: | |
15469 | case R_PPC64_DTPREL16_HIGHEST: | |
15470 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
15471 | if (htab->elf.tls_sec != NULL) |
15472 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
15473 | break; |
15474 | ||
45965137 AM |
15475 | case R_PPC64_ADDR64_LOCAL: |
15476 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
15477 | ? h->elf.other | |
15478 | : sym->st_other); | |
15479 | break; | |
15480 | ||
e515b051 AM |
15481 | case R_PPC64_DTPMOD64: |
15482 | relocation = 1; | |
15483 | addend = 0; | |
15484 | goto dodyn; | |
15485 | ||
411e1bfb | 15486 | case R_PPC64_TPREL64: |
989f9879 AM |
15487 | if (htab->elf.tls_sec != NULL) |
15488 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
15489 | goto dodyn; |
15490 | ||
15491 | case R_PPC64_DTPREL64: | |
989f9879 AM |
15492 | if (htab->elf.tls_sec != NULL) |
15493 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 15494 | /* Fall through. */ |
411e1bfb | 15495 | |
65f38f15 AM |
15496 | /* Relocations that may need to be propagated if this is a |
15497 | dynamic object. */ | |
04c9666a | 15498 | case R_PPC64_REL30: |
65f38f15 AM |
15499 | case R_PPC64_REL32: |
15500 | case R_PPC64_REL64: | |
15501 | case R_PPC64_ADDR14: | |
15502 | case R_PPC64_ADDR14_BRNTAKEN: | |
15503 | case R_PPC64_ADDR14_BRTAKEN: | |
15504 | case R_PPC64_ADDR16: | |
15505 | case R_PPC64_ADDR16_DS: | |
15506 | case R_PPC64_ADDR16_HA: | |
15507 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
15508 | case R_PPC64_ADDR16_HIGH: |
15509 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15510 | case R_PPC64_ADDR16_HIGHER: |
15511 | case R_PPC64_ADDR16_HIGHERA: | |
15512 | case R_PPC64_ADDR16_HIGHEST: | |
15513 | case R_PPC64_ADDR16_HIGHESTA: | |
15514 | case R_PPC64_ADDR16_LO: | |
15515 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
15516 | case R_PPC64_ADDR16_HIGHER34: |
15517 | case R_PPC64_ADDR16_HIGHERA34: | |
15518 | case R_PPC64_ADDR16_HIGHEST34: | |
15519 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 15520 | case R_PPC64_ADDR24: |
65f38f15 AM |
15521 | case R_PPC64_ADDR32: |
15522 | case R_PPC64_ADDR64: | |
15523 | case R_PPC64_UADDR16: | |
15524 | case R_PPC64_UADDR32: | |
15525 | case R_PPC64_UADDR64: | |
5663e321 AM |
15526 | case R_PPC64_D34: |
15527 | case R_PPC64_D34_LO: | |
15528 | case R_PPC64_D34_HI30: | |
15529 | case R_PPC64_D34_HA30: | |
15530 | case R_PPC64_D28: | |
411e1bfb | 15531 | dodyn: |
5d1634d7 | 15532 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
15533 | break; |
15534 | ||
41bd81ab AM |
15535 | if (NO_OPD_RELOCS && is_opd) |
15536 | break; | |
15537 | ||
8a9e8e72 | 15538 | if (bfd_link_pic (info) |
b1b07054 AM |
15539 | ? ((h == NULL |
15540 | || h->dyn_relocs != NULL) | |
15541 | && ((h != NULL && pc_dynrelocs (h)) | |
15542 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
15543 | : (h != NULL |
15544 | ? h->dyn_relocs != NULL | |
d311bc8b | 15545 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 15546 | { |
b34976b6 | 15547 | bfd_boolean skip, relocate; |
65f38f15 | 15548 | asection *sreloc; |
1cf1f670 | 15549 | bfd_vma out_off; |
82e66161 | 15550 | long indx = 0; |
65f38f15 AM |
15551 | |
15552 | /* When generating a dynamic object, these relocations | |
15553 | are copied into the output file to be resolved at run | |
15554 | time. */ | |
15555 | ||
b34976b6 AM |
15556 | skip = FALSE; |
15557 | relocate = FALSE; | |
65f38f15 | 15558 | |
1cf1f670 AM |
15559 | out_off = _bfd_elf_section_offset (output_bfd, info, |
15560 | input_section, rel->r_offset); | |
15561 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 15562 | skip = TRUE; |
1cf1f670 | 15563 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 15564 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
15565 | out_off += (input_section->output_section->vma |
15566 | + input_section->output_offset); | |
15567 | outrel.r_offset = out_off; | |
411e1bfb | 15568 | outrel.r_addend = rel->r_addend; |
65f38f15 | 15569 | |
1cf1f670 AM |
15570 | /* Optimize unaligned reloc use. */ |
15571 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
15572 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
15573 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
15574 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
15575 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
15576 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
15577 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
15578 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
15579 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
15580 | ||
65f38f15 | 15581 | if (skip) |
0bb2d96a | 15582 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 15583 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
15584 | && !is_opd |
15585 | && r_type != R_PPC64_TOC) | |
14acf4dc | 15586 | { |
82e66161 AM |
15587 | indx = h->elf.dynindx; |
15588 | BFD_ASSERT (indx != -1); | |
15589 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 15590 | } |
65f38f15 AM |
15591 | else |
15592 | { | |
41bd81ab AM |
15593 | /* This symbol is local, or marked to become local, |
15594 | or this is an opd section reloc which must point | |
15595 | at a local function. */ | |
65f38f15 | 15596 | outrel.r_addend += relocation; |
e86ce104 | 15597 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 15598 | { |
3fad3c7c | 15599 | if (is_opd && h != NULL) |
afbe61cf AM |
15600 | { |
15601 | /* Lie about opd entries. This case occurs | |
15602 | when building shared libraries and we | |
15603 | reference a function in another shared | |
3fad3c7c AM |
15604 | lib. The same thing happens for a weak |
15605 | definition in an application that's | |
15606 | overridden by a strong definition in a | |
15607 | shared lib. (I believe this is a generic | |
15608 | bug in binutils handling of weak syms.) | |
15609 | In these cases we won't use the opd | |
1e2f5b6e | 15610 | entry in this lib. */ |
b34976b6 | 15611 | unresolved_reloc = FALSE; |
afbe61cf | 15612 | } |
25f23106 AM |
15613 | if (!is_opd |
15614 | && r_type == R_PPC64_ADDR64 | |
15615 | && (h != NULL | |
15616 | ? h->elf.type == STT_GNU_IFUNC | |
15617 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
15618 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15619 | else | |
15620 | { | |
15621 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 15622 | |
25f23106 AM |
15623 | /* We need to relocate .opd contents for ld.so. |
15624 | Prelink also wants simple and consistent rules | |
15625 | for relocs. This make all RELATIVE relocs have | |
15626 | *r_offset equal to r_addend. */ | |
15627 | relocate = TRUE; | |
15628 | } | |
65f38f15 AM |
15629 | } |
15630 | else | |
15631 | { | |
25f23106 AM |
15632 | if (h != NULL |
15633 | ? h->elf.type == STT_GNU_IFUNC | |
15634 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15635 | { | |
25f53a85 | 15636 | info->callbacks->einfo |
695344c0 | 15637 | /* xgettext:c-format */ |
174d0a74 | 15638 | (_("%H: %s for indirect " |
c1c8c1ef | 15639 | "function `%pT' unsupported\n"), |
25f53a85 | 15640 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
15641 | ppc64_elf_howto_table[r_type]->name, |
15642 | sym_name); | |
15643 | ret = FALSE; | |
15644 | } | |
cf35638d | 15645 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
15646 | ; |
15647 | else if (sec == NULL || sec->owner == NULL) | |
15648 | { | |
15649 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 15650 | return FALSE; |
65f38f15 AM |
15651 | } |
15652 | else | |
15653 | { | |
15654 | asection *osec; | |
15655 | ||
15656 | osec = sec->output_section; | |
15657 | indx = elf_section_data (osec)->dynindx; | |
15658 | ||
74541ad4 AM |
15659 | if (indx == 0) |
15660 | { | |
15661 | if ((osec->flags & SEC_READONLY) == 0 | |
15662 | && htab->elf.data_index_section != NULL) | |
15663 | osec = htab->elf.data_index_section; | |
15664 | else | |
15665 | osec = htab->elf.text_index_section; | |
15666 | indx = elf_section_data (osec)->dynindx; | |
15667 | } | |
15668 | BFD_ASSERT (indx != 0); | |
15669 | ||
65f38f15 AM |
15670 | /* We are turning this relocation into one |
15671 | against a section symbol, so subtract out | |
15672 | the output section's address but not the | |
15673 | offset of the input section in the output | |
15674 | section. */ | |
15675 | outrel.r_addend -= osec->vma; | |
15676 | } | |
15677 | ||
15678 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
15679 | } | |
15680 | } | |
15681 | ||
15682 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
15683 | if (h != NULL |
15684 | ? h->elf.type == STT_GNU_IFUNC | |
15685 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
15686 | { |
15687 | sreloc = htab->elf.irelplt; | |
15688 | if (indx == 0) | |
15689 | htab->local_ifunc_resolver = 1; | |
15690 | else if (is_static_defined (&h->elf)) | |
15691 | htab->maybe_local_ifunc_resolver = 1; | |
15692 | } | |
65f38f15 AM |
15693 | if (sreloc == NULL) |
15694 | abort (); | |
15695 | ||
dfbb6ac9 AM |
15696 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
15697 | >= sreloc->size) | |
15698 | abort (); | |
947216bf AM |
15699 | loc = sreloc->contents; |
15700 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
15701 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
15702 | ||
15703 | /* If this reloc is against an external symbol, it will | |
15704 | be computed at runtime, so there's no need to do | |
81407a69 AM |
15705 | anything now. However, for the sake of prelink ensure |
15706 | that the section contents are a known value. */ | |
2cdcc330 | 15707 | if (!relocate) |
81407a69 AM |
15708 | { |
15709 | unresolved_reloc = FALSE; | |
15710 | /* The value chosen here is quite arbitrary as ld.so | |
15711 | ignores section contents except for the special | |
15712 | case of .opd where the contents might be accessed | |
15713 | before relocation. Choose zero, as that won't | |
15714 | cause reloc overflow. */ | |
15715 | relocation = 0; | |
15716 | addend = 0; | |
15717 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
15718 | to improve backward compatibility with older | |
15719 | versions of ld. */ | |
15720 | if (r_type == R_PPC64_ADDR64) | |
15721 | addend = outrel.r_addend; | |
15722 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 15723 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 15724 | addend = outrel.r_offset; |
81407a69 | 15725 | } |
65f38f15 | 15726 | } |
5bd4f169 AM |
15727 | break; |
15728 | ||
65f38f15 AM |
15729 | case R_PPC64_COPY: |
15730 | case R_PPC64_GLOB_DAT: | |
15731 | case R_PPC64_JMP_SLOT: | |
25f23106 | 15732 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
15733 | case R_PPC64_RELATIVE: |
15734 | /* We shouldn't ever see these dynamic relocs in relocatable | |
15735 | files. */ | |
ae9a127f | 15736 | /* Fall through. */ |
65f38f15 AM |
15737 | |
15738 | case R_PPC64_PLTGOT16: | |
15739 | case R_PPC64_PLTGOT16_DS: | |
15740 | case R_PPC64_PLTGOT16_HA: | |
15741 | case R_PPC64_PLTGOT16_HI: | |
15742 | case R_PPC64_PLTGOT16_LO: | |
15743 | case R_PPC64_PLTGOT16_LO_DS: | |
15744 | case R_PPC64_PLTREL32: | |
15745 | case R_PPC64_PLTREL64: | |
15746 | /* These ones haven't been implemented yet. */ | |
15747 | ||
25f53a85 | 15748 | info->callbacks->einfo |
695344c0 | 15749 | /* xgettext:c-format */ |
c1c8c1ef | 15750 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 15751 | input_bfd, |
4ce794b7 | 15752 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
15753 | |
15754 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 15755 | ret = FALSE; |
c316a17c | 15756 | goto copy_reloc; |
65f38f15 | 15757 | } |
5bd4f169 | 15758 | |
67f0cbdb AM |
15759 | /* Multi-instruction sequences that access the TOC can be |
15760 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 15761 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
15762 | switch (r_type) |
15763 | { | |
15764 | default: | |
15765 | break; | |
15766 | ||
15767 | case R_PPC64_GOT_TLSLD16_HI: | |
15768 | case R_PPC64_GOT_TLSGD16_HI: | |
15769 | case R_PPC64_GOT_TPREL16_HI: | |
15770 | case R_PPC64_GOT_DTPREL16_HI: | |
15771 | case R_PPC64_GOT16_HI: | |
15772 | case R_PPC64_TOC16_HI: | |
15773 | /* These relocs would only be useful if building up an | |
15774 | offset to later add to r2, perhaps in an indexed | |
15775 | addressing mode instruction. Don't try to optimize. | |
15776 | Unfortunately, the possibility of someone building up an | |
15777 | offset like this or even with the HA relocs, means that | |
15778 | we need to check the high insn when optimizing the low | |
15779 | insn. */ | |
15780 | break; | |
15781 | ||
5663e321 AM |
15782 | case R_PPC64_PLTCALL_NOTOC: |
15783 | if (!unresolved_reloc) | |
15784 | htab->notoc_plt = 1; | |
15785 | /* Fall through. */ | |
23cedd1d AM |
15786 | case R_PPC64_PLTCALL: |
15787 | if (unresolved_reloc) | |
15788 | { | |
15789 | /* No plt entry. Make this into a direct call. */ | |
15790 | bfd_byte *p = contents + rel->r_offset; | |
15791 | insn = bfd_get_32 (input_bfd, p); | |
15792 | insn &= 1; | |
15793 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
15794 | if (r_type == R_PPC64_PLTCALL) |
15795 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
15796 | unresolved_reloc = save_unresolved_reloc; |
15797 | r_type = R_PPC64_REL24; | |
15798 | } | |
15799 | break; | |
15800 | ||
5663e321 | 15801 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
15802 | case R_PPC64_PLTSEQ: |
15803 | if (unresolved_reloc) | |
15804 | { | |
15805 | unresolved_reloc = FALSE; | |
15806 | goto nop_it; | |
15807 | } | |
15808 | break; | |
15809 | ||
5663e321 AM |
15810 | case R_PPC64_PLT_PCREL34_NOTOC: |
15811 | if (!unresolved_reloc) | |
15812 | htab->notoc_plt = 1; | |
15813 | /* Fall through. */ | |
15814 | case R_PPC64_PLT_PCREL34: | |
15815 | if (unresolved_reloc) | |
15816 | { | |
15817 | bfd_byte *p = contents + rel->r_offset; | |
15818 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
15819 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
15820 | unresolved_reloc = FALSE; | |
15821 | goto copy_reloc; | |
15822 | } | |
15823 | break; | |
15824 | ||
23cedd1d AM |
15825 | case R_PPC64_PLT16_HA: |
15826 | if (unresolved_reloc) | |
15827 | { | |
15828 | unresolved_reloc = FALSE; | |
15829 | goto nop_it; | |
15830 | } | |
15831 | /* Fall through. */ | |
67f0cbdb AM |
15832 | case R_PPC64_GOT_TLSLD16_HA: |
15833 | case R_PPC64_GOT_TLSGD16_HA: | |
15834 | case R_PPC64_GOT_TPREL16_HA: | |
15835 | case R_PPC64_GOT_DTPREL16_HA: | |
15836 | case R_PPC64_GOT16_HA: | |
15837 | case R_PPC64_TOC16_HA: | |
98528052 | 15838 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15839 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 15840 | { |
23cedd1d AM |
15841 | bfd_byte *p; |
15842 | nop_it: | |
15843 | p = contents + (rel->r_offset & ~3); | |
98528052 | 15844 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 15845 | goto copy_reloc; |
98528052 | 15846 | } |
67f0cbdb AM |
15847 | break; |
15848 | ||
23cedd1d AM |
15849 | case R_PPC64_PLT16_LO: |
15850 | case R_PPC64_PLT16_LO_DS: | |
15851 | if (unresolved_reloc) | |
15852 | { | |
15853 | unresolved_reloc = FALSE; | |
15854 | goto nop_it; | |
15855 | } | |
15856 | /* Fall through. */ | |
67f0cbdb AM |
15857 | case R_PPC64_GOT_TLSLD16_LO: |
15858 | case R_PPC64_GOT_TLSGD16_LO: | |
15859 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15860 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15861 | case R_PPC64_GOT16_LO: | |
15862 | case R_PPC64_GOT16_LO_DS: | |
15863 | case R_PPC64_TOC16_LO: | |
15864 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 15865 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15866 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
15867 | { |
15868 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15869 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
15870 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
15871 | { | |
15872 | /* Transform addic to addi when we change reg. */ | |
15873 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
15874 | insn |= (14u << 26) | (2 << 16); | |
15875 | } | |
15876 | else | |
67f0cbdb | 15877 | { |
98528052 AM |
15878 | insn &= ~(0x1f << 16); |
15879 | insn |= 2 << 16; | |
67f0cbdb | 15880 | } |
560c8763 | 15881 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
15882 | } |
15883 | break; | |
9a23f96e AM |
15884 | |
15885 | case R_PPC64_TPREL16_HA: | |
15886 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15887 | { | |
15888 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15889 | insn = bfd_get_32 (input_bfd, p); | |
15890 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
15891 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
15892 | /* xgettext:c-format */ | |
15893 | info->callbacks->minfo | |
15894 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
15895 | input_bfd, input_section, rel->r_offset, |
15896 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 15897 | else |
d830549d AM |
15898 | { |
15899 | bfd_put_32 (input_bfd, NOP, p); | |
15900 | goto copy_reloc; | |
15901 | } | |
9a23f96e AM |
15902 | } |
15903 | break; | |
15904 | ||
15905 | case R_PPC64_TPREL16_LO: | |
15906 | case R_PPC64_TPREL16_LO_DS: | |
15907 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15908 | { | |
15909 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15910 | insn = bfd_get_32 (input_bfd, p); | |
15911 | insn &= ~(0x1f << 16); | |
15912 | insn |= 13 << 16; | |
15913 | bfd_put_32 (input_bfd, insn, p); | |
15914 | } | |
15915 | break; | |
67f0cbdb AM |
15916 | } |
15917 | ||
65f38f15 AM |
15918 | /* Do any further special processing. */ |
15919 | switch (r_type) | |
15920 | { | |
15921 | default: | |
15922 | break; | |
15923 | ||
25f23106 | 15924 | case R_PPC64_REL16_HA: |
4a969973 AM |
15925 | case R_PPC64_REL16_HIGHA: |
15926 | case R_PPC64_REL16_HIGHERA: | |
15927 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 15928 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
15929 | case R_PPC64_ADDR16_HA: |
15930 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15931 | case R_PPC64_ADDR16_HIGHERA: |
15932 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15933 | case R_PPC64_TOC16_HA: |
15934 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15935 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15936 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15937 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15938 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15939 | case R_PPC64_DTPREL16_HA: |
15940 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15941 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15942 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15943 | /* It's just possible that this symbol is a weak symbol |
15944 | that's not actually defined anywhere. In that case, | |
15945 | 'sec' would be NULL, and we should leave the symbol | |
15946 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15947 | if (sec == NULL) |
15948 | break; | |
1a0670f3 | 15949 | /* Fall through. */ |
5c5f6e17 AM |
15950 | |
15951 | case R_PPC64_GOT16_HA: | |
15952 | case R_PPC64_PLTGOT16_HA: | |
15953 | case R_PPC64_PLT16_HA: | |
15954 | case R_PPC64_GOT_TLSGD16_HA: | |
15955 | case R_PPC64_GOT_TLSLD16_HA: | |
15956 | case R_PPC64_GOT_TPREL16_HA: | |
15957 | case R_PPC64_GOT_DTPREL16_HA: | |
15958 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15959 | Bits 0:15 are not used. */ | |
15960 | addend += 0x8000; | |
65f38f15 AM |
15961 | break; |
15962 | ||
5663e321 AM |
15963 | case R_PPC64_D34_HA30: |
15964 | case R_PPC64_ADDR16_HIGHERA34: | |
15965 | case R_PPC64_ADDR16_HIGHESTA34: | |
15966 | case R_PPC64_REL16_HIGHERA34: | |
15967 | case R_PPC64_REL16_HIGHESTA34: | |
15968 | if (sec != NULL) | |
15969 | addend += 1ULL << 33; | |
15970 | break; | |
15971 | ||
65f38f15 AM |
15972 | case R_PPC64_ADDR16_DS: |
15973 | case R_PPC64_ADDR16_LO_DS: | |
15974 | case R_PPC64_GOT16_DS: | |
15975 | case R_PPC64_GOT16_LO_DS: | |
15976 | case R_PPC64_PLT16_LO_DS: | |
15977 | case R_PPC64_SECTOFF_DS: | |
15978 | case R_PPC64_SECTOFF_LO_DS: | |
15979 | case R_PPC64_TOC16_DS: | |
15980 | case R_PPC64_TOC16_LO_DS: | |
15981 | case R_PPC64_PLTGOT16_DS: | |
15982 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15983 | case R_PPC64_GOT_TPREL16_DS: |
15984 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15985 | case R_PPC64_GOT_DTPREL16_DS: | |
15986 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15987 | case R_PPC64_TPREL16_DS: | |
15988 | case R_PPC64_TPREL16_LO_DS: | |
15989 | case R_PPC64_DTPREL16_DS: | |
15990 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15991 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15992 | mask = 3; | |
a680de9a PB |
15993 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15994 | the value must be a multiple of 16. This is somewhat of | |
15995 | a hack, but the "correct" way to do this by defining _DQ | |
15996 | forms of all the _DS relocs bloats all reloc switches in | |
15997 | this file. It doesn't make much sense to use these | |
15998 | relocs in data, so testing the insn should be safe. */ | |
15999 | if ((insn & (0x3f << 26)) == (56u << 26) | |
16000 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 16001 | mask = 15; |
a680de9a PB |
16002 | relocation += addend; |
16003 | addend = insn & (mask ^ 3); | |
16004 | if ((relocation & mask) != 0) | |
65f38f15 | 16005 | { |
a680de9a | 16006 | relocation ^= relocation & mask; |
25f53a85 | 16007 | info->callbacks->einfo |
695344c0 | 16008 | /* xgettext:c-format */ |
174d0a74 | 16009 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 16010 | input_bfd, input_section, rel->r_offset, |
d830549d | 16011 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 16012 | mask + 1); |
65f38f15 | 16013 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16014 | ret = FALSE; |
c316a17c | 16015 | goto copy_reloc; |
65f38f15 AM |
16016 | } |
16017 | break; | |
5bd4f169 AM |
16018 | } |
16019 | ||
239e1f3a AM |
16020 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
16021 | because such sections are not SEC_ALLOC and thus ld.so will | |
16022 | not process them. */ | |
d830549d | 16023 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 16024 | if (unresolved_reloc |
239e1f3a | 16025 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
16026 | && h->elf.def_dynamic) |
16027 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
16028 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 16029 | { |
25f53a85 | 16030 | info->callbacks->einfo |
695344c0 | 16031 | /* xgettext:c-format */ |
c1c8c1ef | 16032 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 16033 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 16034 | howto->name, |
039b3fef | 16035 | h->elf.root.root.string); |
b34976b6 | 16036 | ret = FALSE; |
9c07fe7c | 16037 | } |
5bd4f169 | 16038 | |
b80eed39 AM |
16039 | /* 16-bit fields in insns mostly have signed values, but a |
16040 | few insns have 16-bit unsigned values. Really, we should | |
16041 | have different reloc types. */ | |
16042 | if (howto->complain_on_overflow != complain_overflow_dont | |
16043 | && howto->dst_mask == 0xffff | |
16044 | && (input_section->flags & SEC_CODE) != 0) | |
16045 | { | |
16046 | enum complain_overflow complain = complain_overflow_signed; | |
16047 | ||
16048 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
16049 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
16050 | complain = complain_overflow_bitfield; | |
16051 | else if (howto->rightshift == 0 | |
16052 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
16053 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
16054 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
16055 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
16056 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
16057 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
16058 | complain = complain_overflow_unsigned; |
16059 | if (howto->complain_on_overflow != complain) | |
16060 | { | |
16061 | alt_howto = *howto; | |
16062 | alt_howto.complain_on_overflow = complain; | |
16063 | howto = &alt_howto; | |
16064 | } | |
16065 | } | |
16066 | ||
5663e321 | 16067 | switch (r_type) |
a680de9a | 16068 | { |
5663e321 AM |
16069 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
16070 | case R_PPC64_D34: | |
16071 | case R_PPC64_D34_LO: | |
16072 | case R_PPC64_D34_HI30: | |
16073 | case R_PPC64_D34_HA30: | |
16074 | case R_PPC64_PCREL34: | |
16075 | case R_PPC64_GOT_PCREL34: | |
16076 | case R_PPC64_PLT_PCREL34: | |
16077 | case R_PPC64_PLT_PCREL34_NOTOC: | |
16078 | case R_PPC64_D28: | |
16079 | case R_PPC64_PCREL28: | |
16080 | if (rel->r_offset + 8 > input_section->size) | |
16081 | r = bfd_reloc_outofrange; | |
16082 | else | |
16083 | { | |
5663e321 AM |
16084 | relocation += addend; |
16085 | if (howto->pc_relative) | |
16086 | relocation -= (rel->r_offset | |
16087 | + input_section->output_offset | |
16088 | + input_section->output_section->vma); | |
16089 | relocation >>= howto->rightshift; | |
16090 | ||
16091 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
16092 | pinsn <<= 32; | |
16093 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
16094 | ||
16095 | pinsn &= ~howto->dst_mask; | |
16096 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
16097 | & howto->dst_mask); | |
16098 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
16099 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
16100 | r = bfd_reloc_ok; | |
16101 | if (howto->complain_on_overflow == complain_overflow_signed | |
16102 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
16103 | >= 1ULL << howto->bitsize)) | |
16104 | r = bfd_reloc_overflow; | |
16105 | } | |
16106 | break; | |
16107 | ||
16108 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
16109 | if (rel->r_offset + 4 > input_section->size) |
16110 | r = bfd_reloc_outofrange; | |
16111 | else | |
16112 | { | |
16113 | relocation += addend; | |
16114 | relocation -= (rel->r_offset | |
16115 | + input_section->output_offset | |
16116 | + input_section->output_section->vma); | |
3de43e7b | 16117 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
16118 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
16119 | insn &= ~0x1fffc1; | |
3de43e7b | 16120 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
16121 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
16122 | r = bfd_reloc_ok; | |
3de43e7b | 16123 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
16124 | r = bfd_reloc_overflow; |
16125 | } | |
5663e321 AM |
16126 | break; |
16127 | ||
16128 | default: | |
16129 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
16130 | contents, rel->r_offset, | |
16131 | relocation, addend); | |
a680de9a | 16132 | } |
5bd4f169 | 16133 | |
ef60b7ff | 16134 | if (r != bfd_reloc_ok) |
5bd4f169 | 16135 | { |
bc30df16 | 16136 | char *more_info = NULL; |
b80eed39 | 16137 | const char *reloc_name = howto->name; |
bc30df16 AM |
16138 | |
16139 | if (reloc_dest != DEST_NORMAL) | |
16140 | { | |
16141 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
16142 | if (more_info != NULL) | |
16143 | { | |
16144 | strcpy (more_info, reloc_name); | |
16145 | strcat (more_info, (reloc_dest == DEST_OPD | |
16146 | ? " (OPD)" : " (stub)")); | |
16147 | reloc_name = more_info; | |
16148 | } | |
16149 | } | |
16150 | ||
cd27b276 | 16151 | if (r == bfd_reloc_overflow) |
5bd4f169 | 16152 | { |
8131c122 AM |
16153 | /* On code like "if (foo) foo();" don't report overflow |
16154 | on a branch to zero when foo is undefined. */ | |
16155 | if (!warned | |
16156 | && (reloc_dest == DEST_STUB | |
16157 | || !(h != NULL | |
16158 | && (h->elf.root.type == bfd_link_hash_undefweak | |
16159 | || h->elf.root.type == bfd_link_hash_undefined) | |
16160 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
16161 | info->callbacks->reloc_overflow (info, &h->elf.root, |
16162 | sym_name, reloc_name, | |
16163 | orig_rel.r_addend, | |
16164 | input_bfd, input_section, | |
16165 | rel->r_offset); | |
ef60b7ff AM |
16166 | } |
16167 | else | |
16168 | { | |
25f53a85 | 16169 | info->callbacks->einfo |
695344c0 | 16170 | /* xgettext:c-format */ |
c1c8c1ef | 16171 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 16172 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 16173 | reloc_name, sym_name, (int) r); |
b34976b6 | 16174 | ret = FALSE; |
ef60b7ff | 16175 | } |
bc30df16 AM |
16176 | if (more_info != NULL) |
16177 | free (more_info); | |
5bd4f169 | 16178 | } |
c316a17c AM |
16179 | copy_reloc: |
16180 | if (wrel != rel) | |
16181 | *wrel = *rel; | |
16182 | } | |
16183 | ||
16184 | if (wrel != rel) | |
16185 | { | |
16186 | Elf_Internal_Shdr *rel_hdr; | |
16187 | size_t deleted = rel - wrel; | |
16188 | ||
16189 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
16190 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
16191 | if (rel_hdr->sh_size == 0) | |
16192 | { | |
16193 | /* It is too late to remove an empty reloc section. Leave | |
16194 | one NONE reloc. | |
16195 | ??? What is wrong with an empty section??? */ | |
16196 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
16197 | deleted -= 1; | |
16198 | } | |
16199 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
16200 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
16201 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
16202 | } |
16203 | ||
645ea6a9 AM |
16204 | /* If we're emitting relocations, then shortly after this function |
16205 | returns, reloc offsets and addends for this section will be | |
16206 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
16207 | file rather than the input. Save a copy of the relocs for |
16208 | opd_entry_value. */ | |
0e1862bb | 16209 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
16210 | { |
16211 | bfd_size_type amt; | |
16212 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
16213 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
16214 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
16215 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
16216 | if (rel == NULL) |
16217 | return FALSE; | |
16218 | memcpy (rel, relocs, amt); | |
16219 | } | |
5bd4f169 AM |
16220 | return ret; |
16221 | } | |
16222 | ||
754021d0 AM |
16223 | /* Adjust the value of any local symbols in opd sections. */ |
16224 | ||
6e0b88f1 | 16225 | static int |
754021d0 AM |
16226 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
16227 | const char *name ATTRIBUTE_UNUSED, | |
16228 | Elf_Internal_Sym *elfsym, | |
16229 | asection *input_sec, | |
16230 | struct elf_link_hash_entry *h) | |
16231 | { | |
74f0fb50 AM |
16232 | struct _opd_sec_data *opd; |
16233 | long adjust; | |
754021d0 AM |
16234 | bfd_vma value; |
16235 | ||
4025353c | 16236 | if (h != NULL) |
6e0b88f1 | 16237 | return 1; |
4025353c | 16238 | |
74f0fb50 AM |
16239 | opd = get_opd_info (input_sec); |
16240 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 16241 | return 1; |
754021d0 AM |
16242 | |
16243 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 16244 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
16245 | value -= input_sec->output_section->vma; |
16246 | ||
51aecdc5 | 16247 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 16248 | if (adjust == -1) |
6e0b88f1 AM |
16249 | return 2; |
16250 | ||
16251 | elfsym->st_value += adjust; | |
16252 | return 1; | |
754021d0 AM |
16253 | } |
16254 | ||
5bd4f169 AM |
16255 | /* Finish up dynamic symbol handling. We set the contents of various |
16256 | dynamic sections here. */ | |
16257 | ||
b34976b6 | 16258 | static bfd_boolean |
4ce794b7 AM |
16259 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
16260 | struct bfd_link_info *info, | |
16261 | struct elf_link_hash_entry *h, | |
4aef7643 | 16262 | Elf_Internal_Sym *sym) |
5bd4f169 | 16263 | { |
65f38f15 | 16264 | struct ppc_link_hash_table *htab; |
8387904d | 16265 | struct plt_entry *ent; |
5bd4f169 | 16266 | |
65f38f15 | 16267 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16268 | if (htab == NULL) |
16269 | return FALSE; | |
5bd4f169 | 16270 | |
49c09209 AM |
16271 | if (!htab->opd_abi && !h->def_regular) |
16272 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
16273 | if (ent->plt.offset != (bfd_vma) -1) | |
16274 | { | |
16275 | /* Mark the symbol as undefined, rather than as | |
16276 | defined in glink. Leave the value if there were | |
16277 | any relocations where pointer equality matters | |
16278 | (this is a clue for the dynamic linker, to make | |
16279 | function pointer comparisons work between an | |
16280 | application and shared library), otherwise set it | |
16281 | to zero. */ | |
16282 | sym->st_shndx = SHN_UNDEF; | |
16283 | if (!h->pointer_equality_needed) | |
16284 | sym->st_value = 0; | |
16285 | else if (!h->ref_regular_nonweak) | |
16286 | { | |
16287 | /* This breaks function pointer comparisons, but | |
16288 | that is better than breaking tests for a NULL | |
16289 | function pointer. */ | |
16290 | sym->st_value = 0; | |
16291 | } | |
16292 | break; | |
16293 | } | |
5bd4f169 | 16294 | |
f5385ebf | 16295 | if (h->needs_copy) |
5bd4f169 | 16296 | { |
65f38f15 | 16297 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 16298 | Elf_Internal_Rela rela; |
5474d94f | 16299 | asection *srel; |
49c09209 | 16300 | bfd_byte *loc; |
5bd4f169 | 16301 | |
65f38f15 AM |
16302 | if (h->dynindx == -1 |
16303 | || (h->root.type != bfd_link_hash_defined | |
16304 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
16305 | || htab->elf.srelbss == NULL |
16306 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 16307 | abort (); |
5bd4f169 AM |
16308 | |
16309 | rela.r_offset = (h->root.u.def.value | |
16310 | + h->root.u.def.section->output_section->vma | |
16311 | + h->root.u.def.section->output_offset); | |
16312 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
16313 | rela.r_addend = 0; | |
afbf7e8e | 16314 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
16315 | srel = htab->elf.sreldynrelro; |
16316 | else | |
16317 | srel = htab->elf.srelbss; | |
16318 | loc = srel->contents; | |
16319 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 16320 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
16321 | } |
16322 | ||
b34976b6 | 16323 | return TRUE; |
5bd4f169 AM |
16324 | } |
16325 | ||
65f38f15 AM |
16326 | /* Used to decide how to sort relocs in an optimal manner for the |
16327 | dynamic linker, before writing them out. */ | |
16328 | ||
16329 | static enum elf_reloc_type_class | |
7e612e98 AM |
16330 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
16331 | const asection *rel_sec, | |
16332 | const Elf_Internal_Rela *rela) | |
65f38f15 | 16333 | { |
04c9666a | 16334 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
16335 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
16336 | ||
33e44f2e | 16337 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 16338 | return reloc_class_ifunc; |
a33d1f77 | 16339 | |
4ce794b7 | 16340 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 16341 | switch (r_type) |
65f38f15 AM |
16342 | { |
16343 | case R_PPC64_RELATIVE: | |
16344 | return reloc_class_relative; | |
16345 | case R_PPC64_JMP_SLOT: | |
16346 | return reloc_class_plt; | |
16347 | case R_PPC64_COPY: | |
16348 | return reloc_class_copy; | |
16349 | default: | |
16350 | return reloc_class_normal; | |
16351 | } | |
16352 | } | |
16353 | ||
5bd4f169 AM |
16354 | /* Finish up the dynamic sections. */ |
16355 | ||
b34976b6 | 16356 | static bfd_boolean |
4ce794b7 AM |
16357 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
16358 | struct bfd_link_info *info) | |
5bd4f169 | 16359 | { |
65f38f15 AM |
16360 | struct ppc_link_hash_table *htab; |
16361 | bfd *dynobj; | |
5bd4f169 | 16362 | asection *sdyn; |
5bd4f169 | 16363 | |
65f38f15 | 16364 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16365 | if (htab == NULL) |
16366 | return FALSE; | |
16367 | ||
65f38f15 | 16368 | dynobj = htab->elf.dynobj; |
3d4d4302 | 16369 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 16370 | |
65f38f15 | 16371 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 16372 | { |
5bd4f169 AM |
16373 | Elf64_External_Dyn *dyncon, *dynconend; |
16374 | ||
33e44f2e | 16375 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 16376 | abort (); |
5bd4f169 AM |
16377 | |
16378 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 16379 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
16380 | for (; dyncon < dynconend; dyncon++) |
16381 | { | |
16382 | Elf_Internal_Dyn dyn; | |
19397422 | 16383 | asection *s; |
5bd4f169 AM |
16384 | |
16385 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
16386 | ||
16387 | switch (dyn.d_tag) | |
16388 | { | |
65f38f15 AM |
16389 | default: |
16390 | continue; | |
5bd4f169 | 16391 | |
5d1634d7 | 16392 | case DT_PPC64_GLINK: |
4ce794b7 | 16393 | s = htab->glink; |
6348e046 | 16394 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
16395 | /* We stupidly defined DT_PPC64_GLINK to be the start |
16396 | of glink rather than the first entry point, which is | |
16397 | what ld.so needs, and now have a bigger stub to | |
16398 | support automatic multiple TOCs. */ | |
9e390558 | 16399 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
16400 | break; |
16401 | ||
19397422 AM |
16402 | case DT_PPC64_OPD: |
16403 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16404 | if (s == NULL) |
16405 | continue; | |
16406 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
16407 | break; |
16408 | ||
e8910a83 | 16409 | case DT_PPC64_OPT: |
5663e321 AM |
16410 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
16411 | || htab->notoc_plt) | |
e8910a83 | 16412 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
16413 | if (htab->has_plt_localentry0) |
16414 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
16415 | break; |
16416 | ||
19397422 AM |
16417 | case DT_PPC64_OPDSZ: |
16418 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16419 | if (s == NULL) |
16420 | continue; | |
eea6121a | 16421 | dyn.d_un.d_val = s->size; |
19397422 AM |
16422 | break; |
16423 | ||
65f38f15 | 16424 | case DT_PLTGOT: |
33e44f2e | 16425 | s = htab->elf.splt; |
6348e046 | 16426 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
16427 | break; |
16428 | ||
16429 | case DT_JMPREL: | |
33e44f2e | 16430 | s = htab->elf.srelplt; |
6348e046 | 16431 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 16432 | break; |
5bd4f169 | 16433 | |
65f38f15 | 16434 | case DT_PLTRELSZ: |
33e44f2e | 16435 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 16436 | break; |
82e66161 AM |
16437 | |
16438 | case DT_TEXTREL: | |
16439 | if (htab->local_ifunc_resolver) | |
16440 | info->callbacks->einfo | |
16441 | (_("%X%P: text relocations and GNU indirect " | |
16442 | "functions will result in a segfault at runtime\n")); | |
16443 | else if (htab->maybe_local_ifunc_resolver) | |
16444 | info->callbacks->einfo | |
16445 | (_("%P: warning: text relocations and GNU indirect " | |
16446 | "functions may result in a segfault at runtime\n")); | |
16447 | continue; | |
5bd4f169 | 16448 | } |
5bd4f169 | 16449 | |
65f38f15 | 16450 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 16451 | } |
5bd4f169 AM |
16452 | } |
16453 | ||
6528b6eb AM |
16454 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
16455 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16456 | { |
16457 | /* Fill in the first entry in the global offset table. | |
16458 | We use it to hold the link-time TOCbase. */ | |
16459 | bfd_put_64 (output_bfd, | |
60ee0d4a | 16460 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 16461 | htab->elf.sgot->contents); |
5d1634d7 AM |
16462 | |
16463 | /* Set .got entry size. */ | |
2cdcc330 AM |
16464 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
16465 | = 8; | |
5d1634d7 AM |
16466 | } |
16467 | ||
6528b6eb AM |
16468 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
16469 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16470 | { |
16471 | /* Set .plt entry size. */ | |
33e44f2e | 16472 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 16473 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
16474 | } |
16475 | ||
84f5d08e AM |
16476 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
16477 | brlt ourselves if emitrelocations. */ | |
16478 | if (htab->brlt != NULL | |
16479 | && htab->brlt->reloc_count != 0 | |
16480 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16481 | htab->brlt, | |
d4730f92 | 16482 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
16483 | elf_section_data (htab->brlt)->relocs, |
16484 | NULL)) | |
16485 | return FALSE; | |
16486 | ||
176a0d42 AM |
16487 | if (htab->glink != NULL |
16488 | && htab->glink->reloc_count != 0 | |
16489 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16490 | htab->glink, | |
d4730f92 | 16491 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
16492 | elf_section_data (htab->glink)->relocs, |
16493 | NULL)) | |
16494 | return FALSE; | |
16495 | ||
da44f4e5 | 16496 | |
df136d64 AM |
16497 | if (htab->glink_eh_frame != NULL |
16498 | && htab->glink_eh_frame->size != 0 | |
16499 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
16500 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
16501 | htab->glink_eh_frame, | |
16502 | htab->glink_eh_frame->contents)) | |
16503 | return FALSE; | |
58d180e8 | 16504 | |
e717da7e | 16505 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
16506 | since we didn't add them to DYNOBJ. We know dynobj is the first |
16507 | bfd. */ | |
c72f2fb2 | 16508 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
16509 | { |
16510 | asection *s; | |
7b53ace3 | 16511 | |
0c8d6e5c | 16512 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
16513 | continue; |
16514 | ||
e717da7e AM |
16515 | s = ppc64_elf_tdata (dynobj)->got; |
16516 | if (s != NULL | |
eea6121a | 16517 | && s->size != 0 |
e717da7e AM |
16518 | && s->output_section != bfd_abs_section_ptr |
16519 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16520 | s->contents, s->output_offset, | |
eea6121a | 16521 | s->size)) |
e717da7e AM |
16522 | return FALSE; |
16523 | s = ppc64_elf_tdata (dynobj)->relgot; | |
16524 | if (s != NULL | |
eea6121a | 16525 | && s->size != 0 |
e717da7e AM |
16526 | && s->output_section != bfd_abs_section_ptr |
16527 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16528 | s->contents, s->output_offset, | |
eea6121a | 16529 | s->size)) |
e717da7e AM |
16530 | return FALSE; |
16531 | } | |
f6c52c13 | 16532 | |
b34976b6 | 16533 | return TRUE; |
5bd4f169 AM |
16534 | } |
16535 | ||
5bd4f169 | 16536 | #include "elf64-target.h" |
7b8e7dad AM |
16537 | |
16538 | /* FreeBSD support */ | |
16539 | ||
16540 | #undef TARGET_LITTLE_SYM | |
16541 | #undef TARGET_LITTLE_NAME | |
16542 | ||
16543 | #undef TARGET_BIG_SYM | |
6d00b590 | 16544 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
16545 | #undef TARGET_BIG_NAME |
16546 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
16547 | ||
16548 | #undef ELF_OSABI | |
16549 | #define ELF_OSABI ELFOSABI_FREEBSD | |
16550 | ||
16551 | #undef elf64_bed | |
16552 | #define elf64_bed elf64_powerpc_fbsd_bed | |
16553 | ||
16554 | #include "elf64-target.h" |