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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 **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 56 | static bfd_vma opd_entry_value |
aef36ac1 | 57 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 58 | |
6d00b590 | 59 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 61 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
62 | #define TARGET_BIG_NAME "elf64-powerpc" |
63 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 64 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
65 | #define ELF_MACHINE_CODE EM_PPC64 |
66 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
67 | #define ELF_COMMONPAGESIZE 0x1000 |
68 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
69 | #define elf_info_to_howto ppc64_elf_info_to_howto |
70 | ||
71 | #define elf_backend_want_got_sym 0 | |
72 | #define elf_backend_want_plt_sym 0 | |
73 | #define elf_backend_plt_alignment 3 | |
74 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 75 | #define elf_backend_got_header_size 8 |
5474d94f | 76 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
77 | #define elf_backend_can_gc_sections 1 |
78 | #define elf_backend_can_refcount 1 | |
79 | #define elf_backend_rela_normal 1 | |
64f52338 | 80 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 81 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 82 | |
e717da7e | 83 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 84 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 85 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
86 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
87 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
88 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
89 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 90 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 91 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 92 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
93 | |
94 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
95 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
96 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 97 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 98 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 99 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 100 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 101 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 102 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 103 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 104 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 105 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 106 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 107 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 108 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
109 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
110 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 111 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
112 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
113 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 114 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 115 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 116 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
117 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
118 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
119 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
120 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 121 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 122 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 123 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 124 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 125 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 126 | |
5bd4f169 AM |
127 | /* The name of the dynamic interpreter. This is put in the .interp |
128 | section. */ | |
129 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
130 | ||
131 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 132 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 133 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
134 | |
135 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 136 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 137 | |
a078d95a AM |
138 | /* Offsets to some stack save slots. */ |
139 | #define STK_LR 16 | |
140 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 141 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
142 | CR save slot. Used only by optimised __tls_get_addr call stub, |
143 | relying on __tls_get_addr_opt not saving CR.. */ | |
144 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
145 | ||
5bd4f169 | 146 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 147 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
148 | /* TOC base alignment. */ |
149 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
150 | |
151 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
152 | #define TP_OFFSET 0x7000 | |
153 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 154 | |
ad8e1ba5 AM |
155 | /* .plt call stub instructions. The normal stub is like this, but |
156 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 157 | insert an addi to adjust r11. */ |
a078d95a | 158 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
159 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
160 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
161 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
162 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
163 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
164 | #define BCTR 0x4e800420 /* bctr */ |
165 | ||
07d6d2b8 | 166 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
167 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
168 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
169 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
170 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
171 | ||
172 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
173 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
174 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
175 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
176 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
177 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
178 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 179 | |
71a39c98 | 180 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 181 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 182 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 183 | |
07d6d2b8 AM |
184 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
185 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
186 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 187 | |
07d6d2b8 | 188 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
05d0e962 | 189 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
190 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
191 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 192 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 193 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 AM |
194 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
195 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ | |
07d6d2b8 | 196 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
05d0e962 AM |
197 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
198 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
199 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
a345bc8d | 200 | |
9e390558 AM |
201 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
202 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 203 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
204 | /* 0: */ |
205 | /* .quad plt0-1f */ | |
206 | /* __glink: */ | |
207 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
208 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
209 | /* 1: */ | |
210 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 211 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 212 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
213 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
214 | /* ld %12,0(%11) */ | |
215 | /* ld %2,8(%11) */ | |
216 | /* mtctr %12 */ | |
217 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 218 | /* bctr */ |
b9e5796b AM |
219 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
220 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
221 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
222 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
223 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
224 | |
225 | /* Pad with this. */ | |
226 | #define NOP 0x60000000 | |
227 | ||
721956f4 AM |
228 | /* Some other nops. */ |
229 | #define CROR_151515 0x4def7b82 | |
230 | #define CROR_313131 0x4ffffb82 | |
231 | ||
cedb70c5 | 232 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
233 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
234 | #define B_DOT 0x48000000 /* b . */ | |
235 | ||
236 | /* After that, we need two instructions to load the index, followed by | |
237 | a branch. */ | |
238 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 239 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 240 | |
deb0e272 AM |
241 | /* Instructions used by the save and restore reg functions. */ |
242 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
243 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
244 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
245 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
246 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
247 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
248 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
249 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
250 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
251 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
252 | #define BLR 0x4e800020 /* blr */ |
253 | ||
41bd81ab AM |
254 | /* Since .opd is an array of descriptors and each entry will end up |
255 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
256 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 257 | relocate .opd without reloc entries. */ |
41bd81ab AM |
258 | #ifndef NO_OPD_RELOCS |
259 | #define NO_OPD_RELOCS 0 | |
260 | #endif | |
810d4e75 | 261 | |
a4b6fadd AM |
262 | #ifndef ARRAY_SIZE |
263 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
264 | #endif | |
265 | ||
810d4e75 AM |
266 | static inline int |
267 | abiversion (bfd *abfd) | |
268 | { | |
269 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
270 | } | |
271 | ||
272 | static inline void | |
273 | set_abiversion (bfd *abfd, int ver) | |
274 | { | |
275 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
276 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
277 | } | |
5bd4f169 AM |
278 | \f |
279 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
280 | /* Like other ELF RELA targets that don't apply multiple |
281 | field-altering relocations to the same localation, src_mask is | |
282 | always zero and pcrel_offset is the same as pc_relative. | |
283 | PowerPC can always use a zero bitpos, even when the field is not at | |
284 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
285 | and bitpos=2 which matches the ABI description, or as we do here, | |
286 | rightshift=0, bitsize=26 and bitpos=0. */ | |
287 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
288 | complain, special_func) \ | |
289 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
290 | complain_overflow_ ## complain, special_func, \ | |
291 | #type, FALSE, 0, mask, pc_relative) | |
292 | ||
04c9666a | 293 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 294 | |
f3185997 NC |
295 | static reloc_howto_type ppc64_elf_howto_raw[] = |
296 | { | |
5bd4f169 | 297 | /* This reloc does nothing. */ |
46807bf4 AM |
298 | HOW (R_PPC64_NONE, 3, 0, 0, 0, FALSE, dont, |
299 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
300 | |
301 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
302 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
303 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
304 | |
305 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
306 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
307 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, FALSE, bitfield, |
308 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
309 | |
310 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
311 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
312 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
313 | |
314 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
315 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
316 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
317 | |
318 | /* Bits 16-31 of an address. */ | |
46807bf4 AM |
319 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
320 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
321 | |
322 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
323 | bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
324 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
325 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
326 | |
327 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
328 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
329 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, FALSE, signed, |
330 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
331 | |
332 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
333 | indicate that the branch is expected to be taken. The lower two | |
334 | bits must be zero. */ | |
46807bf4 AM |
335 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
336 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
337 | |
338 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
339 | indicate that the branch is not expected to be taken. The lower | |
340 | two bits must be zero. */ | |
46807bf4 AM |
341 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
342 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
343 | |
344 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
46807bf4 AM |
345 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, TRUE, signed, |
346 | ppc64_elf_branch_reloc), | |
5bd4f169 | 347 | |
05d0e962 | 348 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
46807bf4 AM |
349 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, TRUE, signed, |
350 | ppc64_elf_branch_reloc), | |
05d0e962 | 351 | |
5bd4f169 | 352 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
353 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, TRUE, signed, |
354 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
355 | |
356 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
357 | the branch is expected to be taken. The lower two bits must be | |
358 | zero. */ | |
46807bf4 AM |
359 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
360 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
361 | |
362 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
363 | the branch is not expected to be taken. The lower two bits must | |
364 | be zero. */ | |
46807bf4 AM |
365 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
366 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
367 | |
368 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
369 | symbol. */ | |
46807bf4 AM |
370 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
371 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
372 | |
373 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
374 | the symbol. */ | |
46807bf4 AM |
375 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
376 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
377 | |
378 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
379 | the symbol. */ | |
46807bf4 AM |
380 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
381 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
382 | |
383 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
384 | the symbol. */ | |
46807bf4 AM |
385 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
386 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
387 | |
388 | /* This is used only by the dynamic linker. The symbol should exist | |
389 | both in the object being run and in some shared library. The | |
390 | dynamic linker copies the data addressed by the symbol from the | |
391 | shared library into the object, because the object being | |
392 | run has to have the data at some particular address. */ | |
46807bf4 AM |
393 | HOW (R_PPC64_COPY, 0, 0, 0, 0, FALSE, dont, |
394 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
395 | |
396 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
397 | entries. */ | |
46807bf4 AM |
398 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
399 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
400 | |
401 | /* Created by the link editor. Marks a procedure linkage table | |
402 | entry for a symbol. */ | |
46807bf4 AM |
403 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, FALSE, dont, |
404 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
405 | |
406 | /* Used only by the dynamic linker. When the object is run, this | |
407 | doubleword64 is set to the load address of the object, plus the | |
408 | addend. */ | |
46807bf4 AM |
409 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
410 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
411 | |
412 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
413 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
414 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
415 | |
416 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
417 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
418 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
419 | |
420 | /* 32-bit PC relative. */ | |
46807bf4 AM |
421 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
422 | bfd_elf_generic_reloc), | |
5bd4f169 | 423 | |
10ed1bba | 424 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
425 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
426 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
427 | |
428 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
429 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
46807bf4 AM |
430 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
431 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
432 | |
433 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
434 | the symbol. */ | |
46807bf4 AM |
435 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
436 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
437 | |
438 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
439 | the symbol. */ | |
46807bf4 AM |
440 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
441 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
442 | |
443 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
444 | the symbol. */ | |
46807bf4 AM |
445 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
446 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 447 | |
c061c2d8 | 448 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
449 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
450 | ppc64_elf_sectoff_reloc), | |
5bd4f169 | 451 | |
c061c2d8 | 452 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
46807bf4 AM |
453 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
454 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
455 | |
456 | /* 16-bit upper half section relative relocation. */ | |
46807bf4 AM |
457 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, signed, |
458 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
459 | |
460 | /* 16-bit upper half adjusted section relative relocation. */ | |
46807bf4 AM |
461 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, signed, |
462 | ppc64_elf_sectoff_ha_reloc), | |
5bd4f169 | 463 | |
04c9666a | 464 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
46807bf4 AM |
465 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, TRUE, dont, |
466 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
467 | |
468 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
469 | ||
470 | /* A standard 64-bit relocation. */ | |
46807bf4 AM |
471 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
472 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
473 | |
474 | /* The bits 32-47 of an address. */ | |
46807bf4 AM |
475 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
476 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
477 | |
478 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
479 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
480 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
481 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
482 | |
483 | /* The bits 48-63 of an address. */ | |
46807bf4 AM |
484 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
485 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
486 | |
487 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
488 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
489 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
490 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
491 | |
492 | /* Like ADDR64, but may be unaligned. */ | |
46807bf4 AM |
493 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
494 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
495 | |
496 | /* 64-bit relative relocation. */ | |
46807bf4 AM |
497 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
498 | bfd_elf_generic_reloc), | |
5bd4f169 | 499 | |
cedb70c5 | 500 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
501 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
502 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
503 | |
504 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
505 | table. */ | |
506 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
46807bf4 AM |
507 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
508 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
509 | |
510 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 511 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
46807bf4 AM |
512 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
513 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
514 | |
515 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 516 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
46807bf4 AM |
517 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
518 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
519 | |
520 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 521 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
46807bf4 AM |
522 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
523 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
524 | |
525 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
526 | contents of the low 16 bits, treated as a signed number, is | |
527 | negative. */ | |
5bd4f169 | 528 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
46807bf4 AM |
529 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
530 | ppc64_elf_toc_ha_reloc), | |
5bd4f169 AM |
531 | |
532 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 533 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
46807bf4 AM |
534 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
535 | ppc64_elf_toc64_reloc), | |
5bd4f169 AM |
536 | |
537 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
538 | value to relocate may (!) refer to a PLT entry which the link | |
539 | editor (a) may replace with the symbol value. If the link editor | |
540 | is unable to fully resolve the symbol, it may (b) create a PLT | |
541 | entry and store the address to the new PLT entry in the GOT. | |
542 | This permits lazy resolution of function symbols at run time. | |
543 | The link editor may also skip all of this and just (c) emit a | |
544 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
545 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
46807bf4 AM |
546 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, FALSE,signed, |
547 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
548 | |
549 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
550 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
551 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
552 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
553 | |
554 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
555 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
46807bf4 AM |
556 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
557 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
558 | |
559 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
560 | 1 if the contents of the low 16 bits, treated as a signed number, | |
561 | is negative. */ | |
562 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
46807bf4 AM |
563 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
564 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
565 | |
566 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
46807bf4 AM |
567 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
568 | bfd_elf_generic_reloc), | |
411e1bfb AM |
569 | |
570 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
571 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
572 | bfd_elf_generic_reloc), | |
411e1bfb AM |
573 | |
574 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
46807bf4 AM |
575 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
576 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
577 | |
578 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
579 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
580 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
581 | |
582 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
583 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
584 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
585 | |
586 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
46807bf4 AM |
587 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
588 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
589 | |
590 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
591 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
592 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
593 | |
594 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
46807bf4 AM |
595 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
596 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
597 | |
598 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
599 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
600 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
601 | |
602 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
603 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
46807bf4 AM |
604 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
605 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
606 | |
607 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
608 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
609 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
610 | ppc64_elf_unhandled_reloc), | |
411e1bfb | 611 | |
727fc41e | 612 | /* Marker relocs for TLS. */ |
46807bf4 AM |
613 | HOW (R_PPC64_TLS, 2, 32, 0, 0, FALSE, dont, |
614 | bfd_elf_generic_reloc), | |
615 | ||
616 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
617 | bfd_elf_generic_reloc), | |
618 | ||
619 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
620 | bfd_elf_generic_reloc), | |
727fc41e | 621 | |
23cedd1d AM |
622 | /* Marker reloc for optimizing r2 save in prologue rather than on |
623 | each plt call stub. */ | |
46807bf4 AM |
624 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, FALSE, dont, |
625 | bfd_elf_generic_reloc), | |
3b421ab3 | 626 | |
23cedd1d | 627 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
628 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
629 | bfd_elf_generic_reloc), | |
630 | ||
631 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
632 | bfd_elf_generic_reloc), | |
23cedd1d | 633 | |
411e1bfb AM |
634 | /* Computes the load module index of the load module that contains the |
635 | definition of its TLS sym. */ | |
46807bf4 AM |
636 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
637 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
638 | |
639 | /* Computes a dtv-relative displacement, the difference between the value | |
640 | of sym+add and the base address of the thread-local storage block that | |
641 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
642 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
643 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
644 | |
645 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
646 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
647 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
648 | |
649 | /* Like DTPREL16, but no overflow. */ | |
46807bf4 AM |
650 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
651 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
652 | |
653 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
654 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
655 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
656 | |
657 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
658 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
659 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
660 | |
661 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
662 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
663 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
664 | |
665 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
666 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
667 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
668 | |
669 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
670 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
671 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
672 | |
673 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
674 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
675 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
676 | |
677 | /* Like DTPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
678 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
679 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
680 | |
681 | /* Like DTPREL16_DS, but no overflow. */ | |
46807bf4 AM |
682 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
683 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
684 | |
685 | /* Computes a tp-relative displacement, the difference between the value of | |
686 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
687 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
688 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
689 | |
690 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
691 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
692 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
693 | |
694 | /* Like TPREL16, but no overflow. */ | |
46807bf4 AM |
695 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
696 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
697 | |
698 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
699 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
700 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
701 | |
702 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
703 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
704 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
705 | |
706 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
707 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
708 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
709 | |
710 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
711 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
712 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
713 | |
714 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
715 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
716 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
717 | |
718 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
719 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
720 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
721 | |
722 | /* Like TPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
723 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
724 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
725 | |
726 | /* Like TPREL16_DS, but no overflow. */ | |
46807bf4 AM |
727 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
728 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
729 | |
730 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
731 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
732 | to the first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
733 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
734 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 735 | |
411e1bfb | 736 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
737 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
738 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 739 | |
411e1bfb | 740 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
741 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
742 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 743 | |
411e1bfb | 744 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
745 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
746 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 747 | |
411e1bfb AM |
748 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
749 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
750 | first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
751 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
752 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 753 | |
411e1bfb | 754 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
755 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
756 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 757 | |
411e1bfb | 758 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
759 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
760 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 761 | |
411e1bfb | 762 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
763 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
764 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 765 | |
411e1bfb AM |
766 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
767 | the offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
768 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
769 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 770 | |
411e1bfb | 771 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
46807bf4 AM |
772 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
773 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 774 | |
411e1bfb | 775 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
776 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
777 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 778 | |
411e1bfb | 779 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
780 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
781 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
782 | |
783 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
784 | offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
785 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
786 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 787 | |
411e1bfb | 788 | /* Like GOT_TPREL16_DS, but no overflow. */ |
46807bf4 AM |
789 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
790 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 791 | |
411e1bfb | 792 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
793 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
794 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 795 | |
411e1bfb | 796 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
797 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
798 | ppc64_elf_unhandled_reloc), | |
799 | ||
800 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, FALSE, dont, | |
801 | ppc64_elf_unhandled_reloc), | |
802 | ||
803 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, | |
804 | bfd_elf_generic_reloc), | |
e054468f | 805 | |
25f23106 | 806 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
807 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
808 | bfd_elf_generic_reloc), | |
25f23106 AM |
809 | |
810 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
811 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
812 | bfd_elf_generic_reloc), | |
25f23106 AM |
813 | |
814 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
815 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, TRUE, signed, |
816 | bfd_elf_generic_reloc), | |
25f23106 AM |
817 | |
818 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
819 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
820 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, TRUE, signed, |
821 | ppc64_elf_ha_reloc), | |
25f23106 | 822 | |
4a969973 AM |
823 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, TRUE, dont, |
824 | bfd_elf_generic_reloc), | |
825 | ||
826 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, TRUE, dont, | |
827 | ppc64_elf_ha_reloc), | |
828 | ||
829 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, TRUE, dont, | |
830 | bfd_elf_generic_reloc), | |
831 | ||
832 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, TRUE, dont, | |
833 | ppc64_elf_ha_reloc), | |
834 | ||
835 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, TRUE, dont, | |
836 | bfd_elf_generic_reloc), | |
837 | ||
838 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, TRUE, dont, | |
839 | ppc64_elf_ha_reloc), | |
840 | ||
a680de9a | 841 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
842 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
843 | ppc64_elf_ha_reloc), | |
a680de9a | 844 | |
7ba71655 | 845 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
846 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
847 | ppc64_elf_ha_reloc), | |
7ba71655 | 848 | |
f9c6b907 | 849 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
850 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
851 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
852 | |
853 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
854 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
855 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
856 | |
857 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
858 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
859 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
860 | |
861 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
862 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
863 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
864 | |
865 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
866 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
867 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
868 | |
869 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
870 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
871 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 872 | |
006589cf | 873 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
874 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
875 | bfd_elf_generic_reloc), | |
006589cf | 876 | |
45965137 | 877 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
878 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
879 | bfd_elf_generic_reloc), | |
45965137 | 880 | |
5bd4f169 | 881 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
882 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
883 | NULL), | |
5bd4f169 AM |
884 | |
885 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
886 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
887 | NULL), | |
5bd4f169 AM |
888 | }; |
889 | ||
890 | \f | |
891 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
892 | be done. */ | |
893 | ||
894 | static void | |
4ce794b7 | 895 | ppc_howto_init (void) |
5bd4f169 AM |
896 | { |
897 | unsigned int i, type; | |
898 | ||
a4b6fadd | 899 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
900 | { |
901 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 902 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
903 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
904 | } | |
905 | } | |
906 | ||
907 | static reloc_howto_type * | |
f3185997 | 908 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 909 | bfd_reloc_code_real_type code) |
5bd4f169 | 910 | { |
411e1bfb | 911 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
912 | |
913 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
914 | /* Initialize howto table if needed. */ | |
915 | ppc_howto_init (); | |
916 | ||
4ce794b7 | 917 | switch (code) |
5bd4f169 AM |
918 | { |
919 | default: | |
f3185997 | 920 | /* xgettext:c-format */ |
2cdcc330 AM |
921 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
922 | (int) code); | |
f3185997 | 923 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 924 | return NULL; |
5bd4f169 | 925 | |
411e1bfb AM |
926 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
927 | break; | |
928 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
929 | break; | |
930 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
931 | break; | |
932 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
933 | break; | |
934 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
935 | break; | |
936 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
937 | break; | |
f9c6b907 AM |
938 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
939 | break; | |
411e1bfb | 940 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 941 | break; |
f9c6b907 AM |
942 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
943 | break; | |
411e1bfb | 944 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 945 | break; |
411e1bfb | 946 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 947 | break; |
411e1bfb | 948 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 949 | break; |
411e1bfb | 950 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 951 | break; |
05d0e962 AM |
952 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
953 | break; | |
411e1bfb | 954 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 955 | break; |
411e1bfb | 956 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 957 | break; |
411e1bfb | 958 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 959 | break; |
411e1bfb | 960 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 961 | break; |
411e1bfb | 962 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 963 | break; |
411e1bfb | 964 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 965 | break; |
411e1bfb | 966 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 967 | break; |
411e1bfb | 968 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 969 | break; |
411e1bfb | 970 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 971 | break; |
411e1bfb | 972 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 973 | break; |
411e1bfb | 974 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 975 | break; |
411e1bfb | 976 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 977 | break; |
411e1bfb | 978 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 979 | break; |
411e1bfb | 980 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 981 | break; |
411e1bfb | 982 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 983 | break; |
411e1bfb | 984 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 985 | break; |
411e1bfb | 986 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 987 | break; |
411e1bfb | 988 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 989 | break; |
411e1bfb | 990 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 991 | break; |
411e1bfb | 992 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 993 | break; |
411e1bfb | 994 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 995 | break; |
411e1bfb | 996 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 997 | break; |
411e1bfb | 998 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 999 | break; |
411e1bfb | 1000 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1001 | break; |
411e1bfb | 1002 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1003 | break; |
411e1bfb | 1004 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1005 | break; |
411e1bfb | 1006 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1007 | break; |
411e1bfb | 1008 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1009 | break; |
411e1bfb | 1010 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1011 | break; |
411e1bfb | 1012 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1013 | break; |
411e1bfb | 1014 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1015 | break; |
411e1bfb | 1016 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1017 | break; |
411e1bfb | 1018 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1019 | break; |
411e1bfb | 1020 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1021 | break; |
411e1bfb | 1022 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1023 | break; |
411e1bfb | 1024 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1025 | break; |
411e1bfb | 1026 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1027 | break; |
411e1bfb | 1028 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1029 | break; |
411e1bfb | 1030 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1031 | break; |
411e1bfb | 1032 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1033 | break; |
411e1bfb | 1034 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1035 | break; |
411e1bfb | 1036 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1037 | break; |
411e1bfb | 1038 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1039 | break; |
411e1bfb | 1040 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1041 | break; |
411e1bfb | 1042 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1043 | break; |
411e1bfb | 1044 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1045 | break; |
411e1bfb | 1046 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1047 | break; |
411e1bfb | 1048 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1049 | break; |
411e1bfb | 1050 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1051 | break; |
727fc41e AM |
1052 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1053 | break; | |
1054 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1055 | break; | |
411e1bfb | 1056 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1057 | break; |
411e1bfb | 1058 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1059 | break; |
411e1bfb | 1060 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1061 | break; |
411e1bfb | 1062 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1063 | break; |
f9c6b907 AM |
1064 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1065 | break; | |
411e1bfb | 1066 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1067 | break; |
f9c6b907 AM |
1068 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1069 | break; | |
411e1bfb | 1070 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1071 | break; |
411e1bfb AM |
1072 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1073 | break; | |
1074 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1075 | break; | |
1076 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1077 | break; | |
f9c6b907 AM |
1078 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1079 | break; | |
411e1bfb AM |
1080 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1081 | break; | |
f9c6b907 AM |
1082 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1083 | break; | |
411e1bfb AM |
1084 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1085 | break; | |
1086 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1087 | break; | |
1088 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1089 | break; | |
1090 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1091 | break; | |
1092 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1093 | break; | |
1094 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1095 | break; | |
1096 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1097 | break; | |
1098 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1099 | break; | |
1100 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1101 | break; | |
1102 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1103 | break; | |
1104 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1105 | break; | |
1106 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1107 | break; | |
1108 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1109 | break; | |
1110 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1111 | break; | |
1112 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1113 | break; | |
1114 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1115 | break; | |
1116 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1117 | break; | |
1118 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1119 | break; | |
1120 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1121 | break; | |
1122 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1123 | break; | |
1124 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1125 | break; | |
1126 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1127 | break; | |
1128 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1129 | break; | |
1130 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1131 | break; | |
1132 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1133 | break; | |
1134 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1135 | break; | |
1136 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1137 | break; | |
1138 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1139 | break; | |
1140 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1141 | break; | |
25f23106 AM |
1142 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1143 | break; | |
1144 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1145 | break; | |
1146 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1147 | break; | |
1148 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1149 | break; | |
4a969973 AM |
1150 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1151 | break; | |
1152 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1153 | break; | |
1154 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1155 | break; | |
1156 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1157 | break; | |
1158 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1159 | break; | |
1160 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1161 | break; | |
7ba71655 AM |
1162 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1163 | break; | |
a680de9a PB |
1164 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1165 | break; | |
006589cf AM |
1166 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1167 | break; | |
45965137 AM |
1168 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1169 | break; | |
411e1bfb AM |
1170 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1171 | break; | |
1172 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1173 | break; |
1174 | } | |
1175 | ||
4ce794b7 | 1176 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1177 | }; |
1178 | ||
157090f7 AM |
1179 | static reloc_howto_type * |
1180 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1181 | const char *r_name) | |
1182 | { | |
1183 | unsigned int i; | |
1184 | ||
a4b6fadd | 1185 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1186 | if (ppc64_elf_howto_raw[i].name != NULL |
1187 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1188 | return &ppc64_elf_howto_raw[i]; | |
1189 | ||
1190 | return NULL; | |
1191 | } | |
1192 | ||
5bd4f169 AM |
1193 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1194 | ||
f3185997 | 1195 | static bfd_boolean |
4aef7643 | 1196 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1197 | Elf_Internal_Rela *dst) |
5bd4f169 | 1198 | { |
65f38f15 AM |
1199 | unsigned int type; |
1200 | ||
ef60b7ff | 1201 | /* Initialize howto table if needed. */ |
5bd4f169 | 1202 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1203 | ppc_howto_init (); |
1204 | ||
65f38f15 | 1205 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1206 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1207 | { |
695344c0 | 1208 | /* xgettext:c-format */ |
0aa13fee | 1209 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1210 | abfd, type); |
f3185997 NC |
1211 | bfd_set_error (bfd_error_bad_value); |
1212 | return FALSE; | |
d0fb9a8d | 1213 | } |
65f38f15 | 1214 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1215 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1216 | { | |
1217 | /* xgettext:c-format */ | |
1218 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1219 | abfd, type); | |
1220 | bfd_set_error (bfd_error_bad_value); | |
1221 | return FALSE; | |
1222 | } | |
2cdcc330 | 1223 | |
f3185997 | 1224 | return TRUE; |
5bd4f169 AM |
1225 | } |
1226 | ||
04c9666a | 1227 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1228 | |
1229 | static bfd_reloc_status_type | |
4ce794b7 AM |
1230 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1231 | void *data, asection *input_section, | |
1232 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1233 | { |
a680de9a PB |
1234 | enum elf_ppc64_reloc_type r_type; |
1235 | long insn; | |
1236 | bfd_size_type octets; | |
3de43e7b | 1237 | bfd_vma value; |
a680de9a | 1238 | |
805fc799 AM |
1239 | /* If this is a relocatable link (output_bfd test tells us), just |
1240 | call the generic function. Any adjustment will be done at final | |
1241 | link time. */ | |
1242 | if (output_bfd != NULL) | |
cedb70c5 | 1243 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1244 | input_section, output_bfd, error_message); |
1245 | ||
1246 | /* Adjust the addend for sign extension of the low 16 bits. | |
1247 | We won't actually be using the low 16 bits, so trashing them | |
1248 | doesn't matter. */ | |
1249 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
1250 | r_type = reloc_entry->howto->type; |
1251 | if (r_type != R_PPC64_REL16DX_HA) | |
1252 | return bfd_reloc_continue; | |
1253 | ||
1254 | value = 0; | |
1255 | if (!bfd_is_com_section (symbol->section)) | |
1256 | value = symbol->value; | |
1257 | value += (reloc_entry->addend | |
1258 | + symbol->section->output_offset | |
1259 | + symbol->section->output_section->vma); | |
1260 | value -= (reloc_entry->address | |
1261 | + input_section->output_offset | |
1262 | + input_section->output_section->vma); | |
3de43e7b | 1263 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
1264 | |
1265 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1266 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1267 | insn &= ~0x1fffc1; | |
3de43e7b | 1268 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1269 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1270 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1271 | return bfd_reloc_overflow; |
1272 | return bfd_reloc_ok; | |
805fc799 | 1273 | } |
5bd4f169 | 1274 | |
2441e016 AM |
1275 | static bfd_reloc_status_type |
1276 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1277 | void *data, asection *input_section, | |
1278 | bfd *output_bfd, char **error_message) | |
1279 | { | |
1280 | if (output_bfd != NULL) | |
1281 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1282 | input_section, output_bfd, error_message); | |
1283 | ||
699733f6 AM |
1284 | if (strcmp (symbol->section->name, ".opd") == 0 |
1285 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1286 | { |
1287 | bfd_vma dest = opd_entry_value (symbol->section, | |
1288 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1289 | NULL, NULL, FALSE); |
2441e016 AM |
1290 | if (dest != (bfd_vma) -1) |
1291 | reloc_entry->addend = dest - (symbol->value | |
1292 | + symbol->section->output_section->vma | |
1293 | + symbol->section->output_offset); | |
1294 | } | |
810d4e75 AM |
1295 | else |
1296 | { | |
1297 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1298 | ||
1299 | if (symbol->section->owner != abfd | |
9f284bf9 | 1300 | && symbol->section->owner != NULL |
810d4e75 AM |
1301 | && abiversion (symbol->section->owner) >= 2) |
1302 | { | |
1303 | unsigned int i; | |
1304 | ||
1305 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1306 | { | |
1307 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1308 | ||
1309 | if (strcmp (symdef->name, symbol->name) == 0) | |
1310 | { | |
1311 | elfsym = (elf_symbol_type *) symdef; | |
1312 | break; | |
1313 | } | |
1314 | } | |
1315 | } | |
1316 | reloc_entry->addend | |
1317 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1318 | } | |
2441e016 AM |
1319 | return bfd_reloc_continue; |
1320 | } | |
1321 | ||
805fc799 | 1322 | static bfd_reloc_status_type |
4ce794b7 AM |
1323 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1324 | void *data, asection *input_section, | |
1325 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1326 | { |
1327 | long insn; | |
04c9666a | 1328 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1329 | bfd_size_type octets; |
794e51c0 AM |
1330 | /* Assume 'at' branch hints. */ |
1331 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1332 | |
1333 | /* If this is a relocatable link (output_bfd test tells us), just | |
1334 | call the generic function. Any adjustment will be done at final | |
1335 | link time. */ | |
5bd4f169 | 1336 | if (output_bfd != NULL) |
cedb70c5 | 1337 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1338 | input_section, output_bfd, error_message); |
1339 | ||
1340 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1341 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1342 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1343 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1344 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1345 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1346 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1347 | |
794e51c0 | 1348 | if (is_isa_v2) |
5bd4f169 | 1349 | { |
805fc799 AM |
1350 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1351 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1352 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1353 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1354 | insn |= 0x02 << 21; | |
1355 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1356 | insn |= 0x08 << 21; | |
1357 | else | |
2441e016 | 1358 | goto out; |
5bd4f169 | 1359 | } |
805fc799 AM |
1360 | else |
1361 | { | |
1362 | bfd_vma target = 0; | |
1363 | bfd_vma from; | |
5bd4f169 | 1364 | |
805fc799 AM |
1365 | if (!bfd_is_com_section (symbol->section)) |
1366 | target = symbol->value; | |
1367 | target += symbol->section->output_section->vma; | |
1368 | target += symbol->section->output_offset; | |
1369 | target += reloc_entry->addend; | |
5bd4f169 | 1370 | |
805fc799 AM |
1371 | from = (reloc_entry->address |
1372 | + input_section->output_offset | |
1373 | + input_section->output_section->vma); | |
5bd4f169 | 1374 | |
805fc799 AM |
1375 | /* Invert 'y' bit if not the default. */ |
1376 | if ((bfd_signed_vma) (target - from) < 0) | |
1377 | insn ^= 0x01 << 21; | |
1378 | } | |
4ce794b7 | 1379 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1380 | out: |
1381 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1382 | input_section, output_bfd, error_message); | |
805fc799 | 1383 | } |
5bd4f169 | 1384 | |
805fc799 | 1385 | static bfd_reloc_status_type |
4ce794b7 AM |
1386 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1387 | void *data, asection *input_section, | |
1388 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1389 | { |
1390 | /* If this is a relocatable link (output_bfd test tells us), just | |
1391 | call the generic function. Any adjustment will be done at final | |
1392 | link time. */ | |
1393 | if (output_bfd != NULL) | |
cedb70c5 | 1394 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1395 | input_section, output_bfd, error_message); |
5bd4f169 | 1396 | |
805fc799 AM |
1397 | /* Subtract the symbol section base address. */ |
1398 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1399 | return bfd_reloc_continue; |
1400 | } | |
1401 | ||
805fc799 | 1402 | static bfd_reloc_status_type |
4ce794b7 AM |
1403 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1404 | void *data, asection *input_section, | |
1405 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1406 | { |
1407 | /* If this is a relocatable link (output_bfd test tells us), just | |
1408 | call the generic function. Any adjustment will be done at final | |
1409 | link time. */ | |
1410 | if (output_bfd != NULL) | |
cedb70c5 | 1411 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1412 | input_section, output_bfd, error_message); |
1413 | ||
1414 | /* Subtract the symbol section base address. */ | |
1415 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1416 | ||
1417 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1418 | reloc_entry->addend += 0x8000; | |
1419 | return bfd_reloc_continue; | |
1420 | } | |
1421 | ||
1422 | static bfd_reloc_status_type | |
4ce794b7 AM |
1423 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1424 | void *data, asection *input_section, | |
1425 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1426 | { |
1427 | bfd_vma TOCstart; | |
1428 | ||
1429 | /* If this is a relocatable link (output_bfd test tells us), just | |
1430 | call the generic function. Any adjustment will be done at final | |
1431 | link time. */ | |
1432 | if (output_bfd != NULL) | |
cedb70c5 | 1433 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1434 | input_section, output_bfd, error_message); |
1435 | ||
1436 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1437 | if (TOCstart == 0) | |
1c865ab2 | 1438 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1439 | |
1440 | /* Subtract the TOC base address. */ | |
1441 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1442 | return bfd_reloc_continue; | |
1443 | } | |
1444 | ||
1445 | static bfd_reloc_status_type | |
4ce794b7 AM |
1446 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1447 | void *data, asection *input_section, | |
1448 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1449 | { |
1450 | bfd_vma TOCstart; | |
1451 | ||
1452 | /* If this is a relocatable link (output_bfd test tells us), just | |
1453 | call the generic function. Any adjustment will be done at final | |
1454 | link time. */ | |
1455 | if (output_bfd != NULL) | |
cedb70c5 | 1456 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1457 | input_section, output_bfd, error_message); |
1458 | ||
1459 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1460 | if (TOCstart == 0) | |
1c865ab2 | 1461 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1462 | |
1463 | /* Subtract the TOC base address. */ | |
1464 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1465 | ||
1466 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1467 | reloc_entry->addend += 0x8000; | |
1468 | return bfd_reloc_continue; | |
1469 | } | |
1470 | ||
1471 | static bfd_reloc_status_type | |
4ce794b7 AM |
1472 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1473 | void *data, asection *input_section, | |
1474 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1475 | { |
1476 | bfd_vma TOCstart; | |
1477 | bfd_size_type octets; | |
1478 | ||
1479 | /* If this is a relocatable link (output_bfd test tells us), just | |
1480 | call the generic function. Any adjustment will be done at final | |
1481 | link time. */ | |
1482 | if (output_bfd != NULL) | |
cedb70c5 | 1483 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1484 | input_section, output_bfd, error_message); |
1485 | ||
1486 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1487 | if (TOCstart == 0) | |
1c865ab2 | 1488 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1489 | |
1490 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1491 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
1492 | return bfd_reloc_ok; | |
1493 | } | |
1494 | ||
1495 | static bfd_reloc_status_type | |
4ce794b7 AM |
1496 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1497 | void *data, asection *input_section, | |
1498 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1499 | { |
1500 | /* If this is a relocatable link (output_bfd test tells us), just | |
1501 | call the generic function. Any adjustment will be done at final | |
1502 | link time. */ | |
1503 | if (output_bfd != NULL) | |
cedb70c5 | 1504 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1505 | input_section, output_bfd, error_message); |
1506 | ||
1507 | if (error_message != NULL) | |
1508 | { | |
1509 | static char buf[60]; | |
1510 | sprintf (buf, "generic linker can't handle %s", | |
1511 | reloc_entry->howto->name); | |
1512 | *error_message = buf; | |
1513 | } | |
1514 | return bfd_reloc_dangerous; | |
1515 | } | |
1516 | ||
927be08e AM |
1517 | /* Track GOT entries needed for a given symbol. We might need more |
1518 | than one got entry per symbol. */ | |
1519 | struct got_entry | |
1520 | { | |
1521 | struct got_entry *next; | |
1522 | ||
1523 | /* The symbol addend that we'll be placing in the GOT. */ | |
1524 | bfd_vma addend; | |
1525 | ||
1526 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1527 | symbol referenced from different input files. This is to support | |
1528 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1529 | from one input file to another. After partitioning into TOC groups | |
1530 | we merge entries within the group. | |
1531 | ||
1532 | Point to the BFD owning this GOT entry. */ | |
1533 | bfd *owner; | |
1534 | ||
1535 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1536 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1537 | unsigned char tls_type; |
927be08e AM |
1538 | |
1539 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1540 | unsigned char is_indirect; |
927be08e AM |
1541 | |
1542 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1543 | union | |
2cdcc330 AM |
1544 | { |
1545 | bfd_signed_vma refcount; | |
1546 | bfd_vma offset; | |
1547 | struct got_entry *ent; | |
1548 | } got; | |
927be08e AM |
1549 | }; |
1550 | ||
1551 | /* The same for PLT. */ | |
1552 | struct plt_entry | |
1553 | { | |
1554 | struct plt_entry *next; | |
1555 | ||
1556 | bfd_vma addend; | |
1557 | ||
1558 | union | |
2cdcc330 AM |
1559 | { |
1560 | bfd_signed_vma refcount; | |
1561 | bfd_vma offset; | |
1562 | } plt; | |
927be08e AM |
1563 | }; |
1564 | ||
e717da7e AM |
1565 | struct ppc64_elf_obj_tdata |
1566 | { | |
1567 | struct elf_obj_tdata elf; | |
1568 | ||
1569 | /* Shortcuts to dynamic linker sections. */ | |
1570 | asection *got; | |
1571 | asection *relgot; | |
1572 | ||
b3fac117 AM |
1573 | /* Used during garbage collection. We attach global symbols defined |
1574 | on removed .opd entries to this section so that the sym is removed. */ | |
1575 | asection *deleted_section; | |
81688140 | 1576 | |
927be08e | 1577 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1578 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1579 | struct got_entry tlsld_got; |
8860955f | 1580 | |
2cdcc330 AM |
1581 | union |
1582 | { | |
729eabd5 AM |
1583 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1584 | Elf_Internal_Rela *relocs; | |
1585 | ||
1586 | /* Section contents. */ | |
1587 | bfd_byte *contents; | |
1588 | } opd; | |
d77c8a4b AM |
1589 | |
1590 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1591 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1592 | unsigned int has_small_toc_reloc : 1; |
1593 | ||
560c8763 AM |
1594 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1595 | instruction not one we handle. */ | |
1596 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
1597 | }; |
1598 | ||
1599 | #define ppc64_elf_tdata(bfd) \ | |
1600 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1601 | ||
1602 | #define ppc64_tlsld_got(bfd) \ | |
1603 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1604 | ||
0c8d6e5c AM |
1605 | #define is_ppc64_elf(bfd) \ |
1606 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1607 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1608 | |
e717da7e AM |
1609 | /* Override the generic function because we store some extras. */ |
1610 | ||
1611 | static bfd_boolean | |
1612 | ppc64_elf_mkobject (bfd *abfd) | |
1613 | { | |
0ffa91dd | 1614 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1615 | PPC64_ELF_DATA); |
e717da7e AM |
1616 | } |
1617 | ||
feee612b | 1618 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1619 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1620 | |
b34976b6 | 1621 | static bfd_boolean |
4ce794b7 | 1622 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1623 | { |
14b57c7c AM |
1624 | if (!abfd->arch_info->the_default) |
1625 | return TRUE; | |
1626 | ||
1627 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1628 | { |
1629 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1630 | ||
1631 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1632 | { | |
1633 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1634 | abfd->arch_info = abfd->arch_info->next; | |
1635 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1636 | } | |
1637 | } | |
14b57c7c | 1638 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1639 | } |
1640 | ||
d37c89e5 AM |
1641 | /* Support for core dump NOTE sections. */ |
1642 | ||
1643 | static bfd_boolean | |
1644 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1645 | { | |
eea6121a | 1646 | size_t offset, size; |
d37c89e5 AM |
1647 | |
1648 | if (note->descsz != 504) | |
1649 | return FALSE; | |
1650 | ||
1651 | /* pr_cursig */ | |
228e534f | 1652 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1653 | |
1654 | /* pr_pid */ | |
228e534f | 1655 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1656 | |
1657 | /* pr_reg */ | |
1658 | offset = 112; | |
eea6121a | 1659 | size = 384; |
d37c89e5 AM |
1660 | |
1661 | /* Make a ".reg/999" section. */ | |
1662 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1663 | size, note->descpos + offset); |
d37c89e5 AM |
1664 | } |
1665 | ||
1666 | static bfd_boolean | |
1667 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1668 | { | |
1669 | if (note->descsz != 136) | |
1670 | return FALSE; | |
1671 | ||
228e534f | 1672 | elf_tdata (abfd)->core->pid |
bc989cdc | 1673 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1674 | elf_tdata (abfd)->core->program |
d37c89e5 | 1675 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1676 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1677 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1678 | ||
1679 | return TRUE; | |
1680 | } | |
1681 | ||
183e98be AM |
1682 | static char * |
1683 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1684 | ...) | |
1685 | { | |
1686 | switch (note_type) | |
1687 | { | |
1688 | default: | |
1689 | return NULL; | |
1690 | ||
1691 | case NT_PRPSINFO: | |
1692 | { | |
9ef6d1e3 | 1693 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1694 | va_list ap; |
1695 | ||
1696 | va_start (ap, note_type); | |
75cd47ed | 1697 | memset (data, 0, sizeof (data)); |
183e98be | 1698 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1699 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1700 | DIAGNOSTIC_PUSH; |
be3e27bb | 1701 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1702 | -Wstringop-truncation: |
1703 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1704 | */ | |
95da9854 L |
1705 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1706 | #endif | |
183e98be | 1707 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1708 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1709 | DIAGNOSTIC_POP; |
fe75810f | 1710 | #endif |
183e98be AM |
1711 | va_end (ap); |
1712 | return elfcore_write_note (abfd, buf, bufsiz, | |
1713 | "CORE", note_type, data, sizeof (data)); | |
1714 | } | |
1715 | ||
1716 | case NT_PRSTATUS: | |
1717 | { | |
1718 | char data[504]; | |
1719 | va_list ap; | |
1720 | long pid; | |
1721 | int cursig; | |
1722 | const void *greg; | |
1723 | ||
1724 | va_start (ap, note_type); | |
1725 | memset (data, 0, 112); | |
1726 | pid = va_arg (ap, long); | |
1727 | bfd_put_32 (abfd, pid, data + 32); | |
1728 | cursig = va_arg (ap, int); | |
1729 | bfd_put_16 (abfd, cursig, data + 12); | |
1730 | greg = va_arg (ap, const void *); | |
1731 | memcpy (data + 112, greg, 384); | |
1732 | memset (data + 496, 0, 8); | |
1733 | va_end (ap); | |
1734 | return elfcore_write_note (abfd, buf, bufsiz, | |
1735 | "CORE", note_type, data, sizeof (data)); | |
1736 | } | |
1737 | } | |
1738 | } | |
1739 | ||
5d35169e AM |
1740 | /* Add extra PPC sections. */ |
1741 | ||
2cdcc330 | 1742 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1743 | { |
07d6d2b8 AM |
1744 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1745 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1746 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1747 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1748 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1749 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1750 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1751 | }; |
1752 | ||
7c8fe5c4 AM |
1753 | enum _ppc64_sec_type { |
1754 | sec_normal = 0, | |
1755 | sec_opd = 1, | |
1756 | sec_toc = 2 | |
1757 | }; | |
1758 | ||
f0abc2a1 AM |
1759 | struct _ppc64_elf_section_data |
1760 | { | |
1761 | struct bfd_elf_section_data elf; | |
411e1bfb | 1762 | |
f0abc2a1 AM |
1763 | union |
1764 | { | |
51aecdc5 AM |
1765 | /* An array with one entry for each opd function descriptor, |
1766 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1767 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1768 | struct _opd_sec_data |
1769 | { | |
1770 | /* Points to the function code section for local opd entries. */ | |
1771 | asection **func_sec; | |
1772 | ||
1773 | /* After editing .opd, adjust references to opd local syms. */ | |
1774 | long *adjust; | |
1775 | } opd; | |
7c8fe5c4 | 1776 | |
3a71aa26 AM |
1777 | /* An array for toc sections, indexed by offset/8. */ |
1778 | struct _toc_sec_data | |
1779 | { | |
1780 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1781 | unsigned *symndx; | |
1782 | ||
1783 | /* And the relocation addend. */ | |
1784 | bfd_vma *add; | |
1785 | } toc; | |
7c8fe5c4 AM |
1786 | } u; |
1787 | ||
1788 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 1789 | |
7c8fe5c4 AM |
1790 | /* Flag set when small branches are detected. Used to |
1791 | select suitable defaults for the stub group size. */ | |
1792 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
1793 | |
1794 | /* Flag set when PLTCALL relocs are detected. */ | |
1795 | unsigned int has_pltcall:1; | |
f0abc2a1 AM |
1796 | }; |
1797 | ||
1798 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 1799 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
1800 | |
1801 | static bfd_boolean | |
4ce794b7 | 1802 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1803 | { |
f592407e AM |
1804 | if (!sec->used_by_bfd) |
1805 | { | |
1806 | struct _ppc64_elf_section_data *sdata; | |
1807 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1808 | |
f592407e AM |
1809 | sdata = bfd_zalloc (abfd, amt); |
1810 | if (sdata == NULL) | |
1811 | return FALSE; | |
1812 | sec->used_by_bfd = sdata; | |
1813 | } | |
f0abc2a1 AM |
1814 | |
1815 | return _bfd_elf_new_section_hook (abfd, sec); | |
1816 | } | |
4025353c | 1817 | |
74f0fb50 | 1818 | static struct _opd_sec_data * |
4025353c AM |
1819 | get_opd_info (asection * sec) |
1820 | { | |
1821 | if (sec != NULL | |
1822 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 1823 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 1824 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
1825 | return NULL; |
1826 | } | |
90e3cdf2 JJ |
1827 | \f |
1828 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 1829 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 1830 | static asection *synthetic_opd; |
90e3cdf2 | 1831 | |
699733f6 | 1832 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
1833 | |
1834 | static int | |
1835 | compare_symbols (const void *ap, const void *bp) | |
1836 | { | |
2cdcc330 AM |
1837 | const asymbol *a = *(const asymbol **) ap; |
1838 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 1839 | |
699733f6 AM |
1840 | /* Section symbols first. */ |
1841 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 1842 | return -1; |
699733f6 | 1843 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
1844 | return 1; |
1845 | ||
699733f6 | 1846 | /* then .opd symbols. */ |
cd285db5 AM |
1847 | if (synthetic_opd != NULL) |
1848 | { | |
1849 | if (strcmp (a->section->name, ".opd") == 0 | |
1850 | && strcmp (b->section->name, ".opd") != 0) | |
1851 | return -1; | |
1852 | if (strcmp (a->section->name, ".opd") != 0 | |
1853 | && strcmp (b->section->name, ".opd") == 0) | |
1854 | return 1; | |
1855 | } | |
90e3cdf2 | 1856 | |
699733f6 | 1857 | /* then other code symbols. */ |
2cdcc330 AM |
1858 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
1859 | == (SEC_CODE | SEC_ALLOC)) | |
1860 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
1861 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
1862 | return -1; |
1863 | ||
2cdcc330 AM |
1864 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
1865 | != (SEC_CODE | SEC_ALLOC)) | |
1866 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
1867 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
1868 | return 1; |
1869 | ||
1870 | if (synthetic_relocatable) | |
1871 | { | |
1872 | if (a->section->id < b->section->id) | |
1873 | return -1; | |
1874 | ||
1875 | if (a->section->id > b->section->id) | |
1876 | return 1; | |
1877 | } | |
1878 | ||
1879 | if (a->value + a->section->vma < b->value + b->section->vma) | |
1880 | return -1; | |
1881 | ||
1882 | if (a->value + a->section->vma > b->value + b->section->vma) | |
1883 | return 1; | |
1884 | ||
4d35a0aa AM |
1885 | /* For syms with the same value, prefer strong dynamic global function |
1886 | syms over other syms. */ | |
1887 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
1888 | return -1; | |
1889 | ||
1890 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
1891 | return 1; | |
1892 | ||
1893 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
1894 | return -1; | |
1895 | ||
1896 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
1897 | return 1; | |
1898 | ||
1899 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
1900 | return -1; | |
1901 | ||
1902 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
1903 | return 1; | |
1904 | ||
1905 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
1906 | return -1; | |
1907 | ||
1908 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
1909 | return 1; | |
1910 | ||
aaed6f5b | 1911 | return a > b; |
90e3cdf2 JJ |
1912 | } |
1913 | ||
699733f6 | 1914 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 1915 | |
699733f6 | 1916 | static asymbol * |
7292b3ac | 1917 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 1918 | { |
699733f6 | 1919 | long mid; |
90e3cdf2 | 1920 | |
7292b3ac | 1921 | if (id == (unsigned) -1) |
699733f6 AM |
1922 | { |
1923 | while (lo < hi) | |
1924 | { | |
1925 | mid = (lo + hi) >> 1; | |
1926 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
1927 | lo = mid + 1; | |
1928 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
1929 | hi = mid; | |
1930 | else | |
1931 | return syms[mid]; | |
1932 | } | |
1933 | } | |
1934 | else | |
1935 | { | |
1936 | while (lo < hi) | |
1937 | { | |
1938 | mid = (lo + hi) >> 1; | |
1939 | if (syms[mid]->section->id < id) | |
1940 | lo = mid + 1; | |
1941 | else if (syms[mid]->section->id > id) | |
1942 | hi = mid; | |
1943 | else if (syms[mid]->value < value) | |
1944 | lo = mid + 1; | |
1945 | else if (syms[mid]->value > value) | |
1946 | hi = mid; | |
1947 | else | |
1948 | return syms[mid]; | |
1949 | } | |
1950 | } | |
1951 | return NULL; | |
90e3cdf2 JJ |
1952 | } |
1953 | ||
468392fb AM |
1954 | static bfd_boolean |
1955 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
1956 | { | |
1957 | bfd_vma vma = *(bfd_vma *) ptr; | |
1958 | return ((section->flags & SEC_ALLOC) != 0 | |
1959 | && section->vma <= vma | |
1960 | && vma < section->vma + section->size); | |
1961 | } | |
1962 | ||
699733f6 | 1963 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
1964 | entry syms. Also generate @plt symbols for the glink branch table. |
1965 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
1966 | |
1967 | static long | |
a7535cf3 AM |
1968 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
1969 | long static_count, asymbol **static_syms, | |
1970 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 1971 | asymbol **ret) |
90e3cdf2 JJ |
1972 | { |
1973 | asymbol *s; | |
0ccf57bd | 1974 | size_t i, j, count; |
90e3cdf2 | 1975 | char *names; |
0ccf57bd | 1976 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 1977 | asection *opd = NULL; |
90e3cdf2 | 1978 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 1979 | asymbol **syms; |
ee67d69a | 1980 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
1981 | |
1982 | *ret = NULL; | |
1983 | ||
ee67d69a AM |
1984 | if (abi < 2) |
1985 | { | |
1986 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
1987 | if (opd == NULL && abi == 1) | |
1988 | return 0; | |
1989 | } | |
90e3cdf2 | 1990 | |
a5259595 AM |
1991 | syms = NULL; |
1992 | codesecsym = 0; | |
1993 | codesecsymend = 0; | |
1994 | secsymend = 0; | |
1995 | opdsymend = 0; | |
1996 | symcount = 0; | |
1997 | if (opd != NULL) | |
c9727e01 | 1998 | { |
a5259595 AM |
1999 | symcount = static_count; |
2000 | if (!relocatable) | |
2001 | symcount += dyn_count; | |
2002 | if (symcount == 0) | |
2003 | return 0; | |
c9727e01 | 2004 | |
a5259595 AM |
2005 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2006 | if (syms == NULL) | |
2007 | return -1; | |
90e3cdf2 | 2008 | |
a5259595 AM |
2009 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2010 | { | |
2011 | /* Use both symbol tables. */ | |
2012 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2013 | memcpy (syms + static_count, dyn_syms, | |
2014 | (dyn_count + 1) * sizeof (*syms)); | |
2015 | } | |
2016 | else if (!relocatable && static_count == 0) | |
2017 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2018 | else | |
2019 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2020 | |
0ccf57bd AM |
2021 | /* Trim uninteresting symbols. Interesting symbols are section, |
2022 | function, and notype symbols. */ | |
2023 | for (i = 0, j = 0; i < symcount; ++i) | |
2024 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2025 | | BSF_RELC | BSF_SRELC)) == 0) | |
2026 | syms[j++] = syms[i]; | |
2027 | symcount = j; | |
2028 | ||
a5259595 AM |
2029 | synthetic_relocatable = relocatable; |
2030 | synthetic_opd = opd; | |
2031 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2032 | |
a5259595 AM |
2033 | if (!relocatable && symcount > 1) |
2034 | { | |
bfa5bd2a PA |
2035 | /* Trim duplicate syms, since we may have merged the normal |
2036 | and dynamic symbols. Actually, we only care about syms | |
2037 | that have different values, so trim any with the same | |
2038 | value. Don't consider ifunc and ifunc resolver symbols | |
2039 | duplicates however, because GDB wants to know whether a | |
2040 | text symbol is an ifunc resolver. */ | |
a5259595 | 2041 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2042 | { |
2043 | const asymbol *s0 = syms[i - 1]; | |
2044 | const asymbol *s1 = syms[i]; | |
2045 | ||
2046 | if ((s0->value + s0->section->vma | |
2047 | != s1->value + s1->section->vma) | |
2048 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2049 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2050 | syms[j++] = syms[i]; | |
2051 | } | |
a5259595 AM |
2052 | symcount = j; |
2053 | } | |
699733f6 | 2054 | |
a5259595 AM |
2055 | i = 0; |
2056 | /* Note that here and in compare_symbols we can't compare opd and | |
2057 | sym->section directly. With separate debug info files, the | |
2058 | symbols will be extracted from the debug file while abfd passed | |
2059 | to this function is the real binary. */ | |
0ccf57bd | 2060 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
2061 | ++i; |
2062 | codesecsym = i; | |
2063 | ||
2064 | for (; i < symcount; ++i) | |
2065 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2066 | | SEC_THREAD_LOCAL)) | |
2067 | != (SEC_CODE | SEC_ALLOC)) | |
2068 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2069 | break; | |
2070 | codesecsymend = i; | |
2071 | ||
2072 | for (; i < symcount; ++i) | |
2073 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2074 | break; | |
2075 | secsymend = i; | |
2076 | ||
2077 | for (; i < symcount; ++i) | |
2078 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2079 | break; | |
2080 | opdsymend = i; | |
2081 | ||
2082 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2083 | if (((syms[i]->section->flags |
2084 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2085 | != (SEC_CODE | SEC_ALLOC)) |
2086 | break; | |
2087 | symcount = i; | |
2088 | } | |
c9727e01 | 2089 | count = 0; |
90e3cdf2 | 2090 | |
699733f6 | 2091 | if (relocatable) |
90e3cdf2 | 2092 | { |
699733f6 AM |
2093 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2094 | arelent *r; | |
2095 | size_t size; | |
0ccf57bd | 2096 | size_t relcount; |
90e3cdf2 | 2097 | |
468392fb AM |
2098 | if (opdsymend == secsymend) |
2099 | goto done; | |
2100 | ||
699733f6 | 2101 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2102 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2103 | if (relcount == 0) |
c9727e01 | 2104 | goto done; |
90e3cdf2 | 2105 | |
7356fed5 AM |
2106 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2107 | { | |
2108 | count = -1; | |
2109 | goto done; | |
2110 | } | |
2111 | ||
699733f6 | 2112 | size = 0; |
595da8c5 | 2113 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2114 | { |
2115 | asymbol *sym; | |
90e3cdf2 | 2116 | |
595da8c5 | 2117 | while (r < opd->relocation + relcount |
699733f6 AM |
2118 | && r->address < syms[i]->value + opd->vma) |
2119 | ++r; | |
90e3cdf2 | 2120 | |
595da8c5 | 2121 | if (r == opd->relocation + relcount) |
699733f6 | 2122 | break; |
90e3cdf2 | 2123 | |
699733f6 AM |
2124 | if (r->address != syms[i]->value + opd->vma) |
2125 | continue; | |
90e3cdf2 | 2126 | |
699733f6 AM |
2127 | if (r->howto->type != R_PPC64_ADDR64) |
2128 | continue; | |
90e3cdf2 | 2129 | |
699733f6 AM |
2130 | sym = *r->sym_ptr_ptr; |
2131 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2132 | sym->section->id, sym->value + r->addend)) | |
2133 | { | |
2134 | ++count; | |
2135 | size += sizeof (asymbol); | |
2136 | size += strlen (syms[i]->name) + 2; | |
2137 | } | |
2138 | } | |
90e3cdf2 | 2139 | |
c4b0b099 AM |
2140 | if (size == 0) |
2141 | goto done; | |
699733f6 AM |
2142 | s = *ret = bfd_malloc (size); |
2143 | if (s == NULL) | |
2144 | { | |
7356fed5 | 2145 | count = -1; |
c9727e01 | 2146 | goto done; |
699733f6 | 2147 | } |
90e3cdf2 | 2148 | |
699733f6 | 2149 | names = (char *) (s + count); |
90e3cdf2 | 2150 | |
595da8c5 | 2151 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2152 | { |
699733f6 | 2153 | asymbol *sym; |
90e3cdf2 | 2154 | |
595da8c5 | 2155 | while (r < opd->relocation + relcount |
699733f6 AM |
2156 | && r->address < syms[i]->value + opd->vma) |
2157 | ++r; | |
90e3cdf2 | 2158 | |
595da8c5 | 2159 | if (r == opd->relocation + relcount) |
699733f6 AM |
2160 | break; |
2161 | ||
2162 | if (r->address != syms[i]->value + opd->vma) | |
2163 | continue; | |
2164 | ||
2165 | if (r->howto->type != R_PPC64_ADDR64) | |
2166 | continue; | |
90e3cdf2 | 2167 | |
699733f6 AM |
2168 | sym = *r->sym_ptr_ptr; |
2169 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2170 | sym->section->id, sym->value + r->addend)) | |
2171 | { | |
2172 | size_t len; | |
2173 | ||
2174 | *s = *syms[i]; | |
6ba2a415 | 2175 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2176 | s->section = sym->section; |
2177 | s->value = sym->value + r->addend; | |
2178 | s->name = names; | |
2179 | *names++ = '.'; | |
2180 | len = strlen (syms[i]->name); | |
2181 | memcpy (names, syms[i]->name, len + 1); | |
2182 | names += len + 1; | |
6f610d07 UW |
2183 | /* Have udata.p point back to the original symbol this |
2184 | synthetic symbol was derived from. */ | |
2185 | s->udata.p = syms[i]; | |
699733f6 AM |
2186 | s++; |
2187 | } | |
2188 | } | |
2189 | } | |
2190 | else | |
90e3cdf2 | 2191 | { |
468392fb | 2192 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2193 | bfd_byte *contents = NULL; |
699733f6 | 2194 | size_t size; |
0ccf57bd | 2195 | size_t plt_count = 0; |
468392fb AM |
2196 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2197 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2198 | arelent *p; | |
90e3cdf2 | 2199 | |
ee67d69a | 2200 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2201 | { |
c4b0b099 AM |
2202 | free_contents_and_exit_err: |
2203 | count = -1; | |
ee67d69a | 2204 | free_contents_and_exit: |
699733f6 | 2205 | if (contents) |
ee67d69a | 2206 | free (contents); |
c9727e01 | 2207 | goto done; |
699733f6 | 2208 | } |
90e3cdf2 | 2209 | |
699733f6 AM |
2210 | size = 0; |
2211 | for (i = secsymend; i < opdsymend; ++i) | |
2212 | { | |
2213 | bfd_vma ent; | |
90e3cdf2 | 2214 | |
5ef11c02 AM |
2215 | /* Ignore bogus symbols. */ |
2216 | if (syms[i]->value > opd->size - 8) | |
2217 | continue; | |
2218 | ||
699733f6 AM |
2219 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2220 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2221 | { | |
2222 | ++count; | |
2223 | size += sizeof (asymbol); | |
2224 | size += strlen (syms[i]->name) + 2; | |
2225 | } | |
2226 | } | |
90e3cdf2 | 2227 | |
468392fb | 2228 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2229 | if (dyn_count != 0 |
2230 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2231 | { |
2232 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2233 | size_t extdynsize; | |
2234 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2235 | ||
2236 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2237 | goto free_contents_and_exit_err; |
468392fb AM |
2238 | |
2239 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2240 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2241 | ||
2242 | extdyn = dynbuf; | |
2243 | extdynend = extdyn + dynamic->size; | |
2244 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2245 | { | |
2246 | Elf_Internal_Dyn dyn; | |
2247 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2248 | ||
2249 | if (dyn.d_tag == DT_NULL) | |
2250 | break; | |
2251 | ||
2252 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2253 | { | |
9e390558 AM |
2254 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2255 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2256 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2257 | /* The .glink section usually does not survive the final |
2258 | link; search for the section (usually .text) where the | |
2259 | glink stubs now reside. */ | |
2260 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2261 | &glink_vma); | |
2262 | break; | |
2263 | } | |
2264 | } | |
2265 | ||
2266 | free (dynbuf); | |
2267 | } | |
2268 | ||
2269 | if (glink != NULL) | |
2270 | { | |
2271 | /* Determine __glink trampoline by reading the relative branch | |
2272 | from the first glink stub. */ | |
2273 | bfd_byte buf[4]; | |
b9e5796b AM |
2274 | unsigned int off = 0; |
2275 | ||
2276 | while (bfd_get_section_contents (abfd, glink, buf, | |
2277 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2278 | { |
2279 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2280 | insn ^= B_DOT; | |
2281 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2282 | { |
2cdcc330 AM |
2283 | resolv_vma |
2284 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2285 | break; |
2286 | } | |
2287 | off += 4; | |
2288 | if (off > 4) | |
2289 | break; | |
468392fb AM |
2290 | } |
2291 | ||
2292 | if (resolv_vma) | |
2293 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2294 | |
066ee829 AM |
2295 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2296 | if (relplt != NULL) | |
2297 | { | |
2298 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2299 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2300 | goto free_contents_and_exit_err; |
68ffbac6 | 2301 | |
066ee829 AM |
2302 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2303 | size += plt_count * sizeof (asymbol); | |
468392fb | 2304 | |
066ee829 AM |
2305 | p = relplt->relocation; |
2306 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2307 | { |
2308 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2309 | if (p->addend != 0) | |
2310 | size += sizeof ("+0x") - 1 + 16; | |
2311 | } | |
066ee829 | 2312 | } |
468392fb AM |
2313 | } |
2314 | ||
c4b0b099 AM |
2315 | if (size == 0) |
2316 | goto free_contents_and_exit; | |
699733f6 AM |
2317 | s = *ret = bfd_malloc (size); |
2318 | if (s == NULL) | |
c4b0b099 | 2319 | goto free_contents_and_exit_err; |
90e3cdf2 | 2320 | |
468392fb | 2321 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2322 | |
699733f6 | 2323 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2324 | { |
699733f6 | 2325 | bfd_vma ent; |
90e3cdf2 | 2326 | |
5ef11c02 AM |
2327 | if (syms[i]->value > opd->size - 8) |
2328 | continue; | |
2329 | ||
699733f6 AM |
2330 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2331 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2332 | { |
0ccf57bd | 2333 | size_t lo, hi; |
699733f6 | 2334 | size_t len; |
c9727e01 | 2335 | asection *sec = abfd->sections; |
90e3cdf2 | 2336 | |
699733f6 AM |
2337 | *s = *syms[i]; |
2338 | lo = codesecsym; | |
2339 | hi = codesecsymend; | |
2340 | while (lo < hi) | |
2341 | { | |
0ccf57bd | 2342 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2343 | if (syms[mid]->section->vma < ent) |
2344 | lo = mid + 1; | |
2345 | else if (syms[mid]->section->vma > ent) | |
2346 | hi = mid; | |
2347 | else | |
c9727e01 AM |
2348 | { |
2349 | sec = syms[mid]->section; | |
2350 | break; | |
2351 | } | |
699733f6 AM |
2352 | } |
2353 | ||
c9727e01 | 2354 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2355 | sec = syms[lo - 1]->section; |
699733f6 AM |
2356 | |
2357 | for (; sec != NULL; sec = sec->next) | |
2358 | { | |
2359 | if (sec->vma > ent) | |
2360 | break; | |
63524580 JK |
2361 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2362 | info file. */ | |
2363 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2364 | break; |
2365 | if ((sec->flags & SEC_CODE) != 0) | |
2366 | s->section = sec; | |
2367 | } | |
6ba2a415 | 2368 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2369 | s->value = ent - s->section->vma; |
2370 | s->name = names; | |
2371 | *names++ = '.'; | |
2372 | len = strlen (syms[i]->name); | |
2373 | memcpy (names, syms[i]->name, len + 1); | |
2374 | names += len + 1; | |
6f610d07 UW |
2375 | /* Have udata.p point back to the original symbol this |
2376 | synthetic symbol was derived from. */ | |
2377 | s->udata.p = syms[i]; | |
699733f6 | 2378 | s++; |
90e3cdf2 | 2379 | } |
90e3cdf2 | 2380 | } |
699733f6 | 2381 | free (contents); |
468392fb AM |
2382 | |
2383 | if (glink != NULL && relplt != NULL) | |
2384 | { | |
2385 | if (resolv_vma) | |
2386 | { | |
2387 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2388 | memset (s, 0, sizeof *s); |
468392fb | 2389 | s->the_bfd = abfd; |
6ba2a415 | 2390 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2391 | s->section = glink; |
2392 | s->value = resolv_vma - glink->vma; | |
2393 | s->name = names; | |
2cdcc330 AM |
2394 | memcpy (names, "__glink_PLTresolve", |
2395 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2396 | names += sizeof ("__glink_PLTresolve"); |
2397 | s++; | |
2398 | count++; | |
2399 | } | |
2400 | ||
2401 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2402 | stub rather than on the glink branch table entry. The | |
2403 | objdump disassembler would then use a sensible symbol | |
2404 | name on plt calls. The difficulty in doing so is | |
2405 | a) finding the stubs, and, | |
2406 | b) matching stubs against plt entries, and, | |
2407 | c) there can be multiple stubs for a given plt entry. | |
2408 | ||
2409 | Solving (a) could be done by code scanning, but older | |
2410 | ppc64 binaries used different stubs to current code. | |
2411 | (b) is the tricky one since you need to known the toc | |
2412 | pointer for at least one function that uses a pic stub to | |
2413 | be able to calculate the plt address referenced. | |
2414 | (c) means gdb would need to set multiple breakpoints (or | |
2415 | find the glink branch itself) when setting breakpoints | |
2416 | for pending shared library loads. */ | |
2417 | p = relplt->relocation; | |
2418 | for (i = 0; i < plt_count; i++, p++) | |
2419 | { | |
2420 | size_t len; | |
2421 | ||
2422 | *s = **p->sym_ptr_ptr; | |
2423 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2424 | we are defining a symbol, ensure one of them is set. */ | |
2425 | if ((s->flags & BSF_LOCAL) == 0) | |
2426 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2427 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2428 | s->section = glink; |
2429 | s->value = glink_vma - glink->vma; | |
2430 | s->name = names; | |
2431 | s->udata.p = NULL; | |
2432 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2433 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2434 | names += len; | |
e054468f AM |
2435 | if (p->addend != 0) |
2436 | { | |
2437 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2438 | names += sizeof ("+0x") - 1; | |
2439 | bfd_sprintf_vma (abfd, names, p->addend); | |
2440 | names += strlen (names); | |
2441 | } | |
468392fb AM |
2442 | memcpy (names, "@plt", sizeof ("@plt")); |
2443 | names += sizeof ("@plt"); | |
2444 | s++; | |
b9e5796b AM |
2445 | if (abi < 2) |
2446 | { | |
2447 | glink_vma += 8; | |
2448 | if (i >= 0x8000) | |
2449 | glink_vma += 4; | |
2450 | } | |
2451 | else | |
468392fb AM |
2452 | glink_vma += 4; |
2453 | } | |
2454 | count += plt_count; | |
2455 | } | |
90e3cdf2 JJ |
2456 | } |
2457 | ||
c9727e01 | 2458 | done: |
a7535cf3 | 2459 | free (syms); |
90e3cdf2 JJ |
2460 | return count; |
2461 | } | |
5bd4f169 | 2462 | \f |
65f38f15 AM |
2463 | /* The following functions are specific to the ELF linker, while |
2464 | functions above are used generally. Those named ppc64_elf_* are | |
2465 | called by the main ELF linker code. They appear in this file more | |
2466 | or less in the order in which they are called. eg. | |
2467 | ppc64_elf_check_relocs is called early in the link process, | |
2468 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2469 | called. |
2470 | ||
2471 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2472 | functions have both a function code symbol and a function descriptor | |
2473 | symbol. A call to foo in a relocatable object file looks like: | |
2474 | ||
2475 | . .text | |
2476 | . x: | |
2477 | . bl .foo | |
2478 | . nop | |
2479 | ||
2480 | The function definition in another object file might be: | |
2481 | ||
2482 | . .section .opd | |
2483 | . foo: .quad .foo | |
2484 | . .quad .TOC.@tocbase | |
2485 | . .quad 0 | |
2486 | . | |
2487 | . .text | |
2488 | . .foo: blr | |
2489 | ||
2490 | When the linker resolves the call during a static link, the branch | |
2491 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2492 | If the function definition is in a shared library, things are a little | |
2493 | different: The call goes via a plt call stub, the opd information gets | |
2494 | copied to the plt, and the linker patches the nop. | |
2495 | ||
2496 | . x: | |
2497 | . bl .foo_stub | |
2498 | . ld 2,40(1) | |
2499 | . | |
2500 | . | |
2501 | . .foo_stub: | |
71a39c98 AM |
2502 | . std 2,40(1) # in practice, the call stub |
2503 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2504 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2505 | . ld 12,0(11) | |
2506 | . ld 2,8(11) | |
2507 | . mtctr 12 | |
2508 | . ld 11,16(11) | |
e86ce104 AM |
2509 | . bctr |
2510 | . | |
2511 | . .section .plt | |
2512 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2513 | ||
2514 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2515 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2516 | copying. | |
2517 | ||
2518 | What are the difficulties here? Well, firstly, the relocations | |
2519 | examined by the linker in check_relocs are against the function code | |
2520 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2521 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2522 | to carefully copy dynamic link information from one symbol to the other. | |
2523 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2524 | symbol as is normal for most other backends. We need foo dynamic | |
2525 | instead, at least for an application final link. However, when | |
2526 | creating a shared library containing foo, we need to have both symbols | |
2527 | dynamic so that references to .foo are satisfied during the early | |
2528 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2529 | definition from some other object, eg. a static library. |
2530 | ||
2531 | Update: As of August 2004, we support a new convention. Function | |
2532 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2533 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2534 | |
7c8bbca5 AM |
2535 | /* Of those relocs that might be copied as dynamic relocs, this |
2536 | function selects those that must be copied when linking a shared | |
2537 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2538 | |
1d483afe AM |
2539 | static int |
2540 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2541 | enum elf_ppc64_reloc_type r_type) | |
2542 | { | |
2543 | switch (r_type) | |
2544 | { | |
2545 | default: | |
7c8bbca5 AM |
2546 | /* Only relative relocs can be resolved when the object load |
2547 | address isn't fixed. DTPREL64 is excluded because the | |
2548 | dynamic linker needs to differentiate global dynamic from | |
2549 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2550 | return 1; |
2551 | ||
2552 | case R_PPC64_REL32: | |
2553 | case R_PPC64_REL64: | |
2554 | case R_PPC64_REL30: | |
2555 | return 0; | |
2556 | ||
2557 | case R_PPC64_TPREL16: | |
2558 | case R_PPC64_TPREL16_LO: | |
2559 | case R_PPC64_TPREL16_HI: | |
2560 | case R_PPC64_TPREL16_HA: | |
2561 | case R_PPC64_TPREL16_DS: | |
2562 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2563 | case R_PPC64_TPREL16_HIGH: |
2564 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2565 | case R_PPC64_TPREL16_HIGHER: |
2566 | case R_PPC64_TPREL16_HIGHERA: | |
2567 | case R_PPC64_TPREL16_HIGHEST: | |
2568 | case R_PPC64_TPREL16_HIGHESTA: | |
2569 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
2570 | /* These relocations are relative but in a shared library the |
2571 | linker doesn't know the thread pointer base. */ | |
2572 | return bfd_link_dll (info); | |
1d483afe AM |
2573 | } |
2574 | } | |
65f38f15 | 2575 | |
f4656909 AM |
2576 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2577 | copying dynamic variables from a shared lib into an app's dynbss | |
2578 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
2579 | shared lib. With code that gcc generates, it's vital that this be |
2580 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
2581 | the address of a function descriptor, which resides in the .opd | |
2582 | section. gcc uses the descriptor directly rather than going via the | |
2583 | GOT as some other ABI's do, which means that initialized function | |
2584 | pointers must reference the descriptor. Thus, a function pointer | |
2585 | initialized to the address of a function in a shared library will | |
2586 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 2587 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
2588 | presents a problem as a plt entry for that function is also |
2589 | initialized from the function descriptor symbol and the copy reloc | |
2590 | may not be initialized first. */ | |
a23b6845 | 2591 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2592 | |
721956f4 | 2593 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2594 | string. */ |
2595 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2596 | |
2597 | /* Linker stubs. | |
2598 | ppc_stub_long_branch: | |
2599 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2600 | destination, but a 24 bit branch in a stub section will reach. | |
2601 | . b dest | |
2602 | ||
2603 | ppc_stub_plt_branch: | |
2604 | Similar to the above, but a 24 bit branch in the stub section won't | |
2605 | reach its destination. | |
71a39c98 AM |
2606 | . addis %r11,%r2,xxx@toc@ha |
2607 | . ld %r12,xxx@toc@l(%r11) | |
2608 | . mtctr %r12 | |
721956f4 AM |
2609 | . bctr |
2610 | ||
2611 | ppc_stub_plt_call: | |
2c66dc6c AM |
2612 | Used to call a function in a shared library. If it so happens that |
2613 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2614 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2615 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2616 | . addis %r11,%r2,xxx@toc@ha |
2617 | . ld %r12,xxx+0@toc@l(%r11) | |
2618 | . mtctr %r12 | |
2619 | . ld %r2,xxx+8@toc@l(%r11) | |
2620 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2621 | . bctr |
ad8e1ba5 AM |
2622 | |
2623 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2624 | code to adjust the value and save r2 to support multiple toc sections. | |
2625 | A ppc_stub_long_branch with an r2 offset looks like: | |
2626 | . std %r2,40(%r1) | |
2627 | . addis %r2,%r2,off@ha | |
2628 | . addi %r2,%r2,off@l | |
2629 | . b dest | |
2630 | ||
2631 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2632 | . std %r2,40(%r1) | |
71a39c98 AM |
2633 | . addis %r11,%r2,xxx@toc@ha |
2634 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
2635 | . addis %r2,%r2,off@ha |
2636 | . addi %r2,%r2,off@l | |
71a39c98 | 2637 | . mtctr %r12 |
ad8e1ba5 | 2638 | . bctr |
ac2df442 | 2639 | |
05d0e962 AM |
2640 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2641 | variants exist too, simpler for plt calls since a new toc pointer | |
2642 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2643 | has some more complex stubs to handle calls marked with NOTOC | |
2644 | relocs from functions where r2 is not a valid toc pointer. These | |
2645 | come in two flavours, the ones shown below, and _both variants that | |
2646 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2647 | one call is from a function where r2 is used as the toc pointer but | |
2648 | needs a toc adjusting stub for small-model multi-toc, and another | |
2649 | call is from a function where r2 is not valid. | |
2650 | ppc_stub_long_branch_notoc: | |
2651 | . mflr %r12 | |
2652 | . bcl 20,31,1f | |
2653 | . 1: | |
2654 | . mflr %r11 | |
2655 | . mtlr %r12 | |
2cdcc330 AM |
2656 | . addis %r12,%r11,dest-1b@ha |
2657 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2658 | . b dest |
2659 | ||
2660 | ppc_stub_plt_branch_notoc: | |
2661 | . mflr %r12 | |
2662 | . bcl 20,31,1f | |
2663 | . 1: | |
2664 | . mflr %r11 | |
2665 | . mtlr %r12 | |
2666 | . lis %r12,xxx-1b@highest | |
f891966f | 2667 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2668 | . sldi %r12,%r12,32 |
f891966f | 2669 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2670 | . ori %r12,%r12,xxx-1b@l |
2671 | . add %r12,%r11,%r12 | |
2672 | . mtctr %r12 | |
2673 | . bctr | |
2674 | ||
2675 | ppc_stub_plt_call_notoc: | |
2676 | . mflr %r12 | |
2677 | . bcl 20,31,1f | |
2678 | . 1: | |
2679 | . mflr %r11 | |
2680 | . mtlr %r12 | |
2681 | . lis %r12,xxx-1b@highest | |
f891966f | 2682 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2683 | . sldi %r12,%r12,32 |
f891966f | 2684 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2685 | . ori %r12,%r12,xxx-1b@l |
2686 | . ldx %r12,%r11,%r12 | |
2687 | . mtctr %r12 | |
2688 | . bctr | |
2689 | ||
2690 | In cases where the high instructions would add zero, they are | |
2691 | omitted and following instructions modified in some cases. | |
2692 | ||
2693 | For a given stub group (a set of sections all using the same toc | |
2694 | pointer value) there will be just one stub type used for any | |
2695 | particular function symbol. For example, if printf is called from | |
2696 | code with the tocsave optimization (ie. r2 saved in function | |
2697 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2698 | and from other code without the tocsave optimization requiring a | |
2699 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2700 | type will be created. Calls with the tocsave optimization will | |
2701 | enter this stub after the instruction saving r2. A similar | |
2702 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2703 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2704 | to call an external function like printf. If other calls to printf | |
2705 | require a ppc_stub_plt_call linkage stub then a single | |
2706 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2707 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2708 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2709 | be created and calls not requiring r2 to be saved will enter the | |
2710 | stub after the r2 save instruction. There is an analogous | |
2711 | hierarchy of long branch and plt branch stubs for local call | |
2712 | linkage. */ | |
721956f4 | 2713 | |
2cdcc330 AM |
2714 | enum ppc_stub_type |
2715 | { | |
721956f4 AM |
2716 | ppc_stub_none, |
2717 | ppc_stub_long_branch, | |
ad8e1ba5 | 2718 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2719 | ppc_stub_long_branch_notoc, |
2720 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2721 | ppc_stub_plt_branch, |
ad8e1ba5 | 2722 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
2723 | ppc_stub_plt_branch_notoc, |
2724 | ppc_stub_plt_branch_both, | |
794e51c0 | 2725 | ppc_stub_plt_call, |
7341d5e2 | 2726 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
2727 | ppc_stub_plt_call_notoc, |
2728 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
2729 | ppc_stub_global_entry, |
2730 | ppc_stub_save_res | |
721956f4 AM |
2731 | }; |
2732 | ||
6f20ed8a AM |
2733 | /* Information on stub grouping. */ |
2734 | struct map_stub | |
2735 | { | |
2736 | /* The stub section. */ | |
2737 | asection *stub_sec; | |
2738 | /* This is the section to which stubs in the group will be attached. */ | |
2739 | asection *link_sec; | |
a4b6fadd AM |
2740 | /* Next group. */ |
2741 | struct map_stub *next; | |
2742 | /* Whether to emit a copy of register save/restore functions in this | |
2743 | group. */ | |
2744 | int needs_save_res; | |
df136d64 AM |
2745 | /* Current offset within stubs after the insn restoring lr in a |
2746 | _notoc or _both stub using bcl for pc-relative addressing, or | |
2747 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
2748 | unsigned int lr_restore; | |
2749 | /* Accumulated size of EH info emitted to describe return address | |
2750 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
2751 | unsigned int eh_size; | |
2752 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
2753 | unsigned int eh_base; | |
6f20ed8a AM |
2754 | }; |
2755 | ||
2cdcc330 AM |
2756 | struct ppc_stub_hash_entry |
2757 | { | |
721956f4 AM |
2758 | /* Base hash table entry structure. */ |
2759 | struct bfd_hash_entry root; | |
2760 | ||
ad8e1ba5 AM |
2761 | enum ppc_stub_type stub_type; |
2762 | ||
6f20ed8a AM |
2763 | /* Group information. */ |
2764 | struct map_stub *group; | |
721956f4 AM |
2765 | |
2766 | /* Offset within stub_sec of the beginning of this stub. */ | |
2767 | bfd_vma stub_offset; | |
2768 | ||
2769 | /* Given the symbol's value and its section we can determine its final | |
2770 | value when building the stubs (so the stub knows where to jump. */ | |
2771 | bfd_vma target_value; | |
2772 | asection *target_section; | |
2773 | ||
721956f4 AM |
2774 | /* The symbol table entry, if any, that this was derived from. */ |
2775 | struct ppc_link_hash_entry *h; | |
e054468f | 2776 | struct plt_entry *plt_ent; |
721956f4 | 2777 | |
2d7ad24e AM |
2778 | /* Symbol type. */ |
2779 | unsigned char symtype; | |
2780 | ||
6911b7dc AM |
2781 | /* Symbol st_other. */ |
2782 | unsigned char other; | |
721956f4 AM |
2783 | }; |
2784 | ||
2cdcc330 AM |
2785 | struct ppc_branch_hash_entry |
2786 | { | |
721956f4 AM |
2787 | /* Base hash table entry structure. */ |
2788 | struct bfd_hash_entry root; | |
2789 | ||
c456f082 | 2790 | /* Offset within branch lookup table. */ |
721956f4 AM |
2791 | unsigned int offset; |
2792 | ||
2793 | /* Generation marker. */ | |
2794 | unsigned int iter; | |
2795 | }; | |
65f38f15 | 2796 | |
19e08130 AM |
2797 | /* Used to track dynamic relocations for local symbols. */ |
2798 | struct ppc_dyn_relocs | |
2799 | { | |
2800 | struct ppc_dyn_relocs *next; | |
2801 | ||
2802 | /* The input section of the reloc. */ | |
2803 | asection *sec; | |
2804 | ||
2805 | /* Total number of relocs copied for the input section. */ | |
2806 | unsigned int count : 31; | |
2807 | ||
2808 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
2809 | unsigned int ifunc : 1; | |
2810 | }; | |
2811 | ||
65f38f15 AM |
2812 | struct ppc_link_hash_entry |
2813 | { | |
2814 | struct elf_link_hash_entry elf; | |
2815 | ||
2cdcc330 AM |
2816 | union |
2817 | { | |
b3fac117 AM |
2818 | /* A pointer to the most recently used stub hash entry against this |
2819 | symbol. */ | |
2820 | struct ppc_stub_hash_entry *stub_cache; | |
2821 | ||
2822 | /* A pointer to the next symbol starting with a '.' */ | |
2823 | struct ppc_link_hash_entry *next_dot_sym; | |
2824 | } u; | |
721956f4 | 2825 | |
65f38f15 | 2826 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 2827 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 2828 | |
721956f4 | 2829 | /* Link between function code and descriptor symbols. */ |
34814b9f | 2830 | struct ppc_link_hash_entry *oh; |
721956f4 | 2831 | |
e86ce104 AM |
2832 | /* Flag function code and descriptor symbols. */ |
2833 | unsigned int is_func:1; | |
2834 | unsigned int is_func_descriptor:1; | |
908b32fc | 2835 | unsigned int fake:1; |
411e1bfb | 2836 | |
c5614fa4 AM |
2837 | /* Whether global opd/toc sym has been adjusted or not. |
2838 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
2839 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
2840 | unsigned int adjust_done:1; |
2841 | ||
a4b6fadd AM |
2842 | /* Set if this is an out-of-line register save/restore function, |
2843 | with non-standard calling convention. */ | |
2844 | unsigned int save_res:1; | |
2845 | ||
8b5f1ed8 AM |
2846 | /* Set if a duplicate symbol with non-zero localentry is detected, |
2847 | even when the duplicate symbol does not provide a definition. */ | |
2848 | unsigned int non_zero_localentry:1; | |
2849 | ||
411e1bfb | 2850 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
2851 | Bits are or'd into the mask as the corresponding relocs are |
2852 | encountered during check_relocs, with TLS_TLS being set when any | |
2853 | of the other TLS bits are set. tls_optimize clears bits when | |
2854 | optimizing to indicate the corresponding GOT entry type is not | |
2855 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
2856 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
2857 | separate flag rather than setting TPREL just for convenience in | |
2858 | distinguishing the two cases. | |
2859 | These flags are also kept for local symbols. */ | |
2860 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
2861 | #define TLS_GD 2 /* GD reloc. */ | |
2862 | #define TLS_LD 4 /* LD reloc. */ | |
2863 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
2864 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
2865 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 2866 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 2867 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 2868 | unsigned char tls_mask; |
37da22e5 AM |
2869 | |
2870 | /* The above field is also used to mark function symbols. In which | |
2871 | case TLS_TLS will be 0. */ | |
2872 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 2873 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 2874 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
2875 | }; |
2876 | ||
2877 | /* ppc64 ELF linker hash table. */ | |
2878 | ||
2879 | struct ppc_link_hash_table | |
2880 | { | |
2881 | struct elf_link_hash_table elf; | |
2882 | ||
721956f4 AM |
2883 | /* The stub hash table. */ |
2884 | struct bfd_hash_table stub_hash_table; | |
2885 | ||
2886 | /* Another hash table for plt_branch stubs. */ | |
2887 | struct bfd_hash_table branch_hash_table; | |
2888 | ||
3b421ab3 AM |
2889 | /* Hash table for function prologue tocsave. */ |
2890 | htab_t tocsave_htab; | |
2891 | ||
e7d1c40c AM |
2892 | /* Various options and other info passed from the linker. */ |
2893 | struct ppc64_elf_params *params; | |
721956f4 | 2894 | |
6f20ed8a AM |
2895 | /* The size of sec_info below. */ |
2896 | unsigned int sec_info_arr_size; | |
2897 | ||
2898 | /* Per-section array of extra section info. Done this way rather | |
2899 | than as part of ppc64_elf_section_data so we have the info for | |
2900 | non-ppc64 sections. */ | |
2901 | struct | |
2902 | { | |
2903 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 2904 | bfd_vma toc_off; |
6f20ed8a AM |
2905 | |
2906 | union | |
2907 | { | |
2908 | /* The section group that this section belongs to. */ | |
2909 | struct map_stub *group; | |
2910 | /* A temp section list pointer. */ | |
2911 | asection *list; | |
2912 | } u; | |
2913 | } *sec_info; | |
721956f4 | 2914 | |
a4b6fadd AM |
2915 | /* Linked list of groups. */ |
2916 | struct map_stub *group; | |
2917 | ||
ad8e1ba5 AM |
2918 | /* Temp used when calculating TOC pointers. */ |
2919 | bfd_vma toc_curr; | |
bf102f86 AM |
2920 | bfd *toc_bfd; |
2921 | asection *toc_first_sec; | |
ad8e1ba5 | 2922 | |
b3fac117 AM |
2923 | /* Used when adding symbols. */ |
2924 | struct ppc_link_hash_entry *dot_syms; | |
2925 | ||
33e44f2e | 2926 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 2927 | asection *glink; |
9e390558 | 2928 | asection *global_entry; |
82bd7b59 | 2929 | asection *sfpr; |
2d7ad24e AM |
2930 | asection *pltlocal; |
2931 | asection *relpltlocal; | |
4ce794b7 AM |
2932 | asection *brlt; |
2933 | asection *relbrlt; | |
58d180e8 | 2934 | asection *glink_eh_frame; |
ec338859 | 2935 | |
8387904d AM |
2936 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
2937 | struct ppc_link_hash_entry *tls_get_addr; | |
2938 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 2939 | |
927be08e AM |
2940 | /* The size of reliplt used by got entry relocs. */ |
2941 | bfd_size_type got_reli_size; | |
2942 | ||
9b5ecbd0 | 2943 | /* Statistics. */ |
7341d5e2 | 2944 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 2945 | |
ee75fd95 AM |
2946 | /* Number of stubs against global syms. */ |
2947 | unsigned long stub_globals; | |
2948 | ||
ee67d69a AM |
2949 | /* Set if we're linking code with function descriptors. */ |
2950 | unsigned int opd_abi:1; | |
2951 | ||
4c52953f | 2952 | /* Support for multiple toc sections. */ |
33c0ec9d | 2953 | unsigned int do_multi_toc:1; |
4c52953f | 2954 | unsigned int multi_toc_needed:1; |
927be08e | 2955 | unsigned int second_toc_pass:1; |
67f0cbdb | 2956 | unsigned int do_toc_opt:1; |
4c52953f | 2957 | |
9a23f96e AM |
2958 | /* Set if tls optimization is enabled. */ |
2959 | unsigned int do_tls_opt:1; | |
2960 | ||
3e04d765 AM |
2961 | /* Set if inline plt calls should be converted to direct calls. */ |
2962 | unsigned int can_convert_all_inline_plt:1; | |
2963 | ||
5d1634d7 | 2964 | /* Set on error. */ |
99877b66 | 2965 | unsigned int stub_error:1; |
721956f4 | 2966 | |
8c5b4e52 AM |
2967 | /* Whether func_desc_adjust needs to be run over symbols. */ |
2968 | unsigned int need_func_desc_adj:1; | |
721956f4 | 2969 | |
82e66161 AM |
2970 | /* Whether there exist local gnu indirect function resolvers, |
2971 | referenced by dynamic relocations. */ | |
2972 | unsigned int local_ifunc_resolver:1; | |
2973 | unsigned int maybe_local_ifunc_resolver:1; | |
2974 | ||
f378ab09 AM |
2975 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
2976 | unsigned int has_plt_localentry0:1; | |
2977 | ||
721956f4 AM |
2978 | /* Incremented every time we size stubs. */ |
2979 | unsigned int stub_iteration; | |
5d1634d7 | 2980 | |
87d72d41 AM |
2981 | /* Small local sym cache. */ |
2982 | struct sym_cache sym_cache; | |
65f38f15 AM |
2983 | }; |
2984 | ||
4c52953f AM |
2985 | /* Rename some of the generic section flags to better document how they |
2986 | are used here. */ | |
b0dddeec AM |
2987 | |
2988 | /* Nonzero if this section has TLS related relocations. */ | |
2989 | #define has_tls_reloc sec_flg0 | |
2990 | ||
23cedd1d | 2991 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
2992 | #define has_tls_get_addr_call sec_flg1 |
2993 | ||
2994 | /* Nonzero if this section has any toc or got relocs. */ | |
2995 | #define has_toc_reloc sec_flg2 | |
2996 | ||
2997 | /* Nonzero if this section has a call to another section that uses | |
2998 | the toc or got. */ | |
d77c8a4b | 2999 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3000 | |
3001 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3002 | #define call_check_in_progress sec_flg4 |
70cc837d | 3003 | #define call_check_done sec_flg5 |
4c52953f | 3004 | |
65f38f15 AM |
3005 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3006 | ||
3007 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3008 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3009 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3010 | |
721956f4 AM |
3011 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3012 | ((struct ppc_stub_hash_entry *) \ | |
3013 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3014 | ||
3015 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3016 | ((struct ppc_branch_hash_entry *) \ | |
3017 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3018 | ||
3019 | /* Create an entry in the stub hash table. */ | |
3020 | ||
3021 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3022 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3023 | struct bfd_hash_table *table, | |
3024 | const char *string) | |
721956f4 AM |
3025 | { |
3026 | /* Allocate the structure if it has not already been allocated by a | |
3027 | subclass. */ | |
3028 | if (entry == NULL) | |
3029 | { | |
3030 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3031 | if (entry == NULL) | |
3032 | return entry; | |
3033 | } | |
3034 | ||
3035 | /* Call the allocation method of the superclass. */ | |
3036 | entry = bfd_hash_newfunc (entry, table, string); | |
3037 | if (entry != NULL) | |
3038 | { | |
3039 | struct ppc_stub_hash_entry *eh; | |
3040 | ||
3041 | /* Initialize the local fields. */ | |
3042 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3043 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3044 | eh->group = NULL; |
721956f4 AM |
3045 | eh->stub_offset = 0; |
3046 | eh->target_value = 0; | |
3047 | eh->target_section = NULL; | |
721956f4 | 3048 | eh->h = NULL; |
6911b7dc | 3049 | eh->plt_ent = NULL; |
6911b7dc | 3050 | eh->other = 0; |
721956f4 AM |
3051 | } |
3052 | ||
3053 | return entry; | |
3054 | } | |
3055 | ||
3056 | /* Create an entry in the branch hash table. */ | |
3057 | ||
3058 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3059 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3060 | struct bfd_hash_table *table, | |
3061 | const char *string) | |
721956f4 AM |
3062 | { |
3063 | /* Allocate the structure if it has not already been allocated by a | |
3064 | subclass. */ | |
3065 | if (entry == NULL) | |
3066 | { | |
3067 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3068 | if (entry == NULL) | |
3069 | return entry; | |
3070 | } | |
3071 | ||
3072 | /* Call the allocation method of the superclass. */ | |
3073 | entry = bfd_hash_newfunc (entry, table, string); | |
3074 | if (entry != NULL) | |
3075 | { | |
3076 | struct ppc_branch_hash_entry *eh; | |
3077 | ||
3078 | /* Initialize the local fields. */ | |
3079 | eh = (struct ppc_branch_hash_entry *) entry; | |
3080 | eh->offset = 0; | |
3081 | eh->iter = 0; | |
3082 | } | |
3083 | ||
3084 | return entry; | |
3085 | } | |
3086 | ||
65f38f15 AM |
3087 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3088 | ||
3089 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3090 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3091 | struct bfd_hash_table *table, | |
3092 | const char *string) | |
65f38f15 AM |
3093 | { |
3094 | /* Allocate the structure if it has not already been allocated by a | |
3095 | subclass. */ | |
3096 | if (entry == NULL) | |
3097 | { | |
3098 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3099 | if (entry == NULL) | |
3100 | return entry; | |
3101 | } | |
3102 | ||
3103 | /* Call the allocation method of the superclass. */ | |
3104 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3105 | if (entry != NULL) | |
3106 | { | |
3107 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3108 | ||
b3fac117 | 3109 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3110 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3111 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3112 | ||
3113 | /* When making function calls, old ABI code references function entry | |
3114 | points (dot symbols), while new ABI code references the function | |
3115 | descriptor symbol. We need to make any combination of reference and | |
3116 | definition work together, without breaking archive linking. | |
3117 | ||
3118 | For a defined function "foo" and an undefined call to "bar": | |
3119 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3120 | "bar" too). | |
3121 | A new object defines "foo" and references "bar". | |
3122 | ||
3123 | A new object thus has no problem with its undefined symbols being | |
3124 | satisfied by definitions in an old object. On the other hand, the | |
3125 | old object won't have ".bar" satisfied by a new object. | |
3126 | ||
3127 | Keep a list of newly added dot-symbols. */ | |
3128 | ||
3129 | if (string[0] == '.') | |
3130 | { | |
3131 | struct ppc_link_hash_table *htab; | |
3132 | ||
3133 | htab = (struct ppc_link_hash_table *) table; | |
3134 | eh->u.next_dot_sym = htab->dot_syms; | |
3135 | htab->dot_syms = eh; | |
3136 | } | |
65f38f15 AM |
3137 | } |
3138 | ||
3139 | return entry; | |
3140 | } | |
3141 | ||
2cdcc330 AM |
3142 | struct tocsave_entry |
3143 | { | |
3b421ab3 AM |
3144 | asection *sec; |
3145 | bfd_vma offset; | |
3146 | }; | |
3147 | ||
3148 | static hashval_t | |
3149 | tocsave_htab_hash (const void *p) | |
3150 | { | |
3151 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3152 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3153 | } |
3154 | ||
3155 | static int | |
3156 | tocsave_htab_eq (const void *p1, const void *p2) | |
3157 | { | |
3158 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3159 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3160 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3161 | } | |
3162 | ||
68faa637 AM |
3163 | /* Destroy a ppc64 ELF linker hash table. */ |
3164 | ||
3165 | static void | |
d495ab0d | 3166 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3167 | { |
d495ab0d | 3168 | struct ppc_link_hash_table *htab; |
68faa637 | 3169 | |
d495ab0d | 3170 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3171 | if (htab->tocsave_htab) |
3172 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3173 | bfd_hash_table_free (&htab->branch_hash_table); |
3174 | bfd_hash_table_free (&htab->stub_hash_table); | |
3175 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3176 | } |
3177 | ||
65f38f15 AM |
3178 | /* Create a ppc64 ELF linker hash table. */ |
3179 | ||
3180 | static struct bfd_link_hash_table * | |
4ce794b7 | 3181 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3182 | { |
3183 | struct ppc_link_hash_table *htab; | |
3184 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3185 | ||
4ce794b7 | 3186 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3187 | if (htab == NULL) |
3188 | return NULL; | |
3189 | ||
66eb6687 | 3190 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3191 | sizeof (struct ppc_link_hash_entry), |
3192 | PPC64_ELF_DATA)) | |
65f38f15 | 3193 | { |
e2d34d7d | 3194 | free (htab); |
65f38f15 AM |
3195 | return NULL; |
3196 | } | |
3197 | ||
721956f4 | 3198 | /* Init the stub hash table too. */ |
66eb6687 AM |
3199 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3200 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3201 | { |
d495ab0d | 3202 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3203 | return NULL; |
3204 | } | |
721956f4 AM |
3205 | |
3206 | /* And the branch hash table. */ | |
66eb6687 AM |
3207 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3208 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3209 | { |
3210 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3211 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3212 | return NULL; |
3213 | } | |
721956f4 | 3214 | |
3b421ab3 AM |
3215 | htab->tocsave_htab = htab_try_create (1024, |
3216 | tocsave_htab_hash, | |
3217 | tocsave_htab_eq, | |
3218 | NULL); | |
3219 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3220 | { |
d495ab0d | 3221 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3222 | return NULL; |
3223 | } | |
d495ab0d | 3224 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3225 | |
3254fd24 AM |
3226 | /* Initializing two fields of the union is just cosmetic. We really |
3227 | only care about glist, but when compiled on a 32-bit host the | |
3228 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3229 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3230 | htab->elf.init_got_refcount.refcount = 0; |
3231 | htab->elf.init_got_refcount.glist = NULL; | |
3232 | htab->elf.init_plt_refcount.refcount = 0; | |
3233 | htab->elf.init_plt_refcount.glist = NULL; | |
3234 | htab->elf.init_got_offset.offset = 0; | |
3235 | htab->elf.init_got_offset.glist = NULL; | |
3236 | htab->elf.init_plt_offset.offset = 0; | |
3237 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3238 | |
65f38f15 AM |
3239 | return &htab->elf.root; |
3240 | } | |
3241 | ||
bfeb4a28 AM |
3242 | /* Create sections for linker generated code. */ |
3243 | ||
3244 | static bfd_boolean | |
3245 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3246 | { | |
3247 | struct ppc_link_hash_table *htab; | |
3248 | flagword flags; | |
3249 | ||
3250 | htab = ppc_hash_table (info); | |
3251 | ||
bfeb4a28 AM |
3252 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3253 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3254 | if (htab->params->save_restore_funcs) |
3255 | { | |
3256 | /* Create .sfpr for code to save and restore fp regs. */ | |
3257 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3258 | flags); | |
3259 | if (htab->sfpr == NULL | |
2cdcc330 | 3260 | || !bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b32547cd AM |
3261 | return FALSE; |
3262 | } | |
3263 | ||
3264 | if (bfd_link_relocatable (info)) | |
3265 | return TRUE; | |
bfeb4a28 AM |
3266 | |
3267 | /* Create .glink for lazy dynamic linking support. */ | |
3268 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3269 | flags); | |
3270 | if (htab->glink == NULL | |
2cdcc330 | 3271 | || !bfd_set_section_alignment (dynobj, htab->glink, 3)) |
bfeb4a28 AM |
3272 | return FALSE; |
3273 | ||
9e390558 AM |
3274 | /* The part of .glink used by global entry stubs, separate so that |
3275 | it can be aligned appropriately without affecting htab->glink. */ | |
3276 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3277 | flags); | |
3278 | if (htab->global_entry == NULL | |
2cdcc330 | 3279 | || !bfd_set_section_alignment (dynobj, htab->global_entry, 2)) |
9e390558 AM |
3280 | return FALSE; |
3281 | ||
bfeb4a28 AM |
3282 | if (!info->no_ld_generated_unwind_info) |
3283 | { | |
3284 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3285 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3286 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3287 | ".eh_frame", | |
3288 | flags); | |
3289 | if (htab->glink_eh_frame == NULL | |
3290 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
3291 | return FALSE; | |
3292 | } | |
3293 | ||
3294 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3295 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3296 | if (htab->elf.iplt == NULL | |
2cdcc330 | 3297 | || !bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) |
bfeb4a28 AM |
3298 | return FALSE; |
3299 | ||
3300 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3301 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3302 | htab->elf.irelplt |
3303 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3304 | if (htab->elf.irelplt == NULL | |
2cdcc330 | 3305 | || !bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3306 | return FALSE; |
3307 | ||
3308 | /* Create branch lookup table for plt_branch stubs. */ | |
3309 | flags = (SEC_ALLOC | SEC_LOAD | |
3310 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3311 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3312 | flags); | |
3313 | if (htab->brlt == NULL | |
2cdcc330 | 3314 | || !bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
bfeb4a28 AM |
3315 | return FALSE; |
3316 | ||
2d7ad24e AM |
3317 | /* Local plt entries, put in .branch_lt but a separate section for |
3318 | convenience. */ | |
3319 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3320 | flags); | |
3321 | if (htab->pltlocal == NULL | |
2cdcc330 | 3322 | || !bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) |
2d7ad24e AM |
3323 | return FALSE; |
3324 | ||
0e1862bb | 3325 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3326 | return TRUE; |
3327 | ||
3328 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3329 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3330 | htab->relbrlt |
3331 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3332 | if (htab->relbrlt == NULL |
2cdcc330 | 3333 | || !bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
bfeb4a28 AM |
3334 | return FALSE; |
3335 | ||
2d7ad24e AM |
3336 | htab->relpltlocal |
3337 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3338 | if (htab->relpltlocal == NULL | |
2cdcc330 | 3339 | || !bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) |
2d7ad24e AM |
3340 | return FALSE; |
3341 | ||
bfeb4a28 AM |
3342 | return TRUE; |
3343 | } | |
3344 | ||
e717da7e AM |
3345 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3346 | ||
bfeb4a28 | 3347 | bfd_boolean |
e7d1c40c AM |
3348 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3349 | struct ppc64_elf_params *params) | |
e717da7e AM |
3350 | { |
3351 | struct ppc_link_hash_table *htab; | |
3352 | ||
e7d1c40c | 3353 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3354 | |
3355 | /* Always hook our dynamic sections into the first bfd, which is the | |
3356 | linker created stub bfd. This ensures that the GOT header is at | |
3357 | the start of the output TOC section. */ | |
3358 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3359 | htab->elf.dynobj = params->stub_bfd; |
3360 | htab->params = params; | |
bfeb4a28 | 3361 | |
bfeb4a28 | 3362 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3363 | } |
3364 | ||
721956f4 AM |
3365 | /* Build a name for an entry in the stub hash table. */ |
3366 | ||
3367 | static char * | |
4ce794b7 AM |
3368 | ppc_stub_name (const asection *input_section, |
3369 | const asection *sym_sec, | |
3370 | const struct ppc_link_hash_entry *h, | |
3371 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3372 | { |
3373 | char *stub_name; | |
bcaa2f82 | 3374 | ssize_t len; |
721956f4 AM |
3375 | |
3376 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3377 | offsets from a sym as a branch target? In fact, we could | |
3378 | probably assume the addend is always zero. */ | |
3379 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3380 | ||
3381 | if (h) | |
3382 | { | |
3383 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3384 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3385 | if (stub_name == NULL) |
3386 | return stub_name; | |
3387 | ||
bcaa2f82 AM |
3388 | len = sprintf (stub_name, "%08x.%s+%x", |
3389 | input_section->id & 0xffffffff, | |
3390 | h->elf.root.root.string, | |
3391 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3392 | } |
3393 | else | |
3394 | { | |
ad8e1ba5 | 3395 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3396 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3397 | if (stub_name == NULL) |
3398 | return stub_name; | |
3399 | ||
bcaa2f82 AM |
3400 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3401 | input_section->id & 0xffffffff, | |
3402 | sym_sec->id & 0xffffffff, | |
3403 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3404 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3405 | } |
bcaa2f82 | 3406 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3407 | stub_name[len - 2] = 0; |
721956f4 AM |
3408 | return stub_name; |
3409 | } | |
3410 | ||
3411 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3412 | creating the stub name takes a bit of time. */ | |
3413 | ||
3414 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3415 | ppc_get_stub_entry (const asection *input_section, |
3416 | const asection *sym_sec, | |
039b3fef | 3417 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3418 | const Elf_Internal_Rela *rel, |
3419 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3420 | { |
3421 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3422 | struct map_stub *group; |
721956f4 AM |
3423 | |
3424 | /* If this input section is part of a group of sections sharing one | |
3425 | stub section, then use the id of the first section in the group. | |
3426 | Stub names need to include a section id, as there may well be | |
3427 | more than one stub used to reach say, printf, and we need to | |
3428 | distinguish between them. */ | |
6f20ed8a | 3429 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3430 | if (group == NULL) |
3431 | return NULL; | |
721956f4 | 3432 | |
b3fac117 AM |
3433 | if (h != NULL && h->u.stub_cache != NULL |
3434 | && h->u.stub_cache->h == h | |
6f20ed8a | 3435 | && h->u.stub_cache->group == group) |
721956f4 | 3436 | { |
b3fac117 | 3437 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3438 | } |
3439 | else | |
3440 | { | |
3441 | char *stub_name; | |
3442 | ||
6f20ed8a | 3443 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3444 | if (stub_name == NULL) |
3445 | return NULL; | |
3446 | ||
3447 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3448 | stub_name, FALSE, FALSE); |
721956f4 | 3449 | if (h != NULL) |
b3fac117 | 3450 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3451 | |
3452 | free (stub_name); | |
3453 | } | |
3454 | ||
3455 | return stub_entry; | |
3456 | } | |
3457 | ||
3458 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3459 | stub entry are initialised. */ | |
3460 | ||
3461 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3462 | ppc_add_stub (const char *stub_name, |
3463 | asection *section, | |
25f53a85 | 3464 | struct bfd_link_info *info) |
721956f4 | 3465 | { |
25f53a85 | 3466 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3467 | struct map_stub *group; |
721956f4 AM |
3468 | asection *link_sec; |
3469 | asection *stub_sec; | |
3470 | struct ppc_stub_hash_entry *stub_entry; | |
3471 | ||
6f20ed8a AM |
3472 | group = htab->sec_info[section->id].u.group; |
3473 | link_sec = group->link_sec; | |
3474 | stub_sec = group->stub_sec; | |
721956f4 AM |
3475 | if (stub_sec == NULL) |
3476 | { | |
6f20ed8a AM |
3477 | size_t namelen; |
3478 | bfd_size_type len; | |
3479 | char *s_name; | |
721956f4 | 3480 | |
6f20ed8a AM |
3481 | namelen = strlen (link_sec->name); |
3482 | len = namelen + sizeof (STUB_SUFFIX); | |
3483 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3484 | if (s_name == NULL) | |
3485 | return NULL; | |
721956f4 | 3486 | |
6f20ed8a AM |
3487 | memcpy (s_name, link_sec->name, namelen); |
3488 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3489 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3490 | if (stub_sec == NULL) | |
3491 | return NULL; | |
3492 | group->stub_sec = stub_sec; | |
721956f4 AM |
3493 | } |
3494 | ||
3495 | /* Enter this entry into the linker stub hash table. */ | |
3496 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3497 | TRUE, FALSE); |
721956f4 AM |
3498 | if (stub_entry == NULL) |
3499 | { | |
695344c0 | 3500 | /* xgettext:c-format */ |
cf97bcb0 AM |
3501 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3502 | section->owner, stub_name); | |
721956f4 AM |
3503 | return NULL; |
3504 | } | |
3505 | ||
6f20ed8a | 3506 | stub_entry->group = group; |
721956f4 | 3507 | stub_entry->stub_offset = 0; |
721956f4 AM |
3508 | return stub_entry; |
3509 | } | |
3510 | ||
e717da7e AM |
3511 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3512 | not already done. */ | |
65f38f15 | 3513 | |
b34976b6 | 3514 | static bfd_boolean |
e717da7e | 3515 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3516 | { |
e717da7e AM |
3517 | asection *got, *relgot; |
3518 | flagword flags; | |
3519 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3520 | |
0c8d6e5c | 3521 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3522 | return FALSE; |
4dfe6ac6 NC |
3523 | if (htab == NULL) |
3524 | return FALSE; | |
0ffa91dd | 3525 | |
33e44f2e AM |
3526 | if (!htab->elf.sgot |
3527 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3528 | return FALSE; | |
e717da7e AM |
3529 | |
3530 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3531 | | SEC_LINKER_CREATED); | |
3532 | ||
c456f082 | 3533 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3534 | if (!got |
e717da7e AM |
3535 | || !bfd_set_section_alignment (abfd, got, 3)) |
3536 | return FALSE; | |
65f38f15 | 3537 | |
c456f082 AM |
3538 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3539 | flags | SEC_READONLY); | |
e717da7e | 3540 | if (!relgot |
2cdcc330 | 3541 | || !bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3542 | return FALSE; |
e717da7e AM |
3543 | |
3544 | ppc64_elf_tdata (abfd)->got = got; | |
3545 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3546 | return TRUE; |
65f38f15 | 3547 | } |
5bd4f169 | 3548 | |
b31867b6 AM |
3549 | /* Follow indirect and warning symbol links. */ |
3550 | ||
3551 | static inline struct bfd_link_hash_entry * | |
3552 | follow_link (struct bfd_link_hash_entry *h) | |
3553 | { | |
3554 | while (h->type == bfd_link_hash_indirect | |
3555 | || h->type == bfd_link_hash_warning) | |
3556 | h = h->u.i.link; | |
3557 | return h; | |
3558 | } | |
3559 | ||
3560 | static inline struct elf_link_hash_entry * | |
3561 | elf_follow_link (struct elf_link_hash_entry *h) | |
3562 | { | |
3563 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3564 | } | |
3565 | ||
3566 | static inline struct ppc_link_hash_entry * | |
3567 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3568 | { | |
3569 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
3570 | } | |
3571 | ||
40d16e0b AM |
3572 | /* Merge PLT info on FROM with that on TO. */ |
3573 | ||
3574 | static void | |
3575 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3576 | struct ppc_link_hash_entry *to) | |
3577 | { | |
3578 | if (from->elf.plt.plist != NULL) | |
3579 | { | |
3580 | if (to->elf.plt.plist != NULL) | |
3581 | { | |
3582 | struct plt_entry **entp; | |
3583 | struct plt_entry *ent; | |
3584 | ||
3585 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3586 | { | |
3587 | struct plt_entry *dent; | |
3588 | ||
3589 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3590 | if (dent->addend == ent->addend) | |
3591 | { | |
3592 | dent->plt.refcount += ent->plt.refcount; | |
3593 | *entp = ent->next; | |
3594 | break; | |
3595 | } | |
3596 | if (dent == NULL) | |
3597 | entp = &ent->next; | |
3598 | } | |
3599 | *entp = to->elf.plt.plist; | |
3600 | } | |
3601 | ||
3602 | to->elf.plt.plist = from->elf.plt.plist; | |
3603 | from->elf.plt.plist = NULL; | |
3604 | } | |
3605 | } | |
3606 | ||
65f38f15 AM |
3607 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3608 | ||
3609 | static void | |
fcfa13d2 AM |
3610 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3611 | struct elf_link_hash_entry *dir, | |
3612 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3613 | { |
3614 | struct ppc_link_hash_entry *edir, *eind; | |
3615 | ||
3616 | edir = (struct ppc_link_hash_entry *) dir; | |
3617 | eind = (struct ppc_link_hash_entry *) ind; | |
3618 | ||
c79d6685 AM |
3619 | edir->is_func |= eind->is_func; |
3620 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3621 | edir->tls_mask |= eind->tls_mask; | |
3622 | if (eind->oh != NULL) | |
3623 | edir->oh = ppc_follow_link (eind->oh); | |
3624 | ||
474436e6 | 3625 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3626 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3627 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3628 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3629 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3630 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3631 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3632 | |
d311bc8b AM |
3633 | /* If we were called to copy over info for a weak sym, don't copy |
3634 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3635 | in order to simplify readonly_dynrelocs and save a field in the | |
3636 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3637 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3638 | are then tested. */ |
d311bc8b | 3639 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3640 | return; |
d311bc8b | 3641 | |
411e1bfb | 3642 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3643 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3644 | { |
bbd7ec4a AM |
3645 | if (edir->dyn_relocs != NULL) |
3646 | { | |
6061a67d AM |
3647 | struct elf_dyn_relocs **pp; |
3648 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3649 | |
fcfa13d2 | 3650 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3651 | list. Merge any entries against the same section. */ |
3652 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3653 | { | |
6061a67d | 3654 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
3655 | |
3656 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3657 | if (q->sec == p->sec) | |
3658 | { | |
3659 | q->pc_count += p->pc_count; | |
3660 | q->count += p->count; | |
3661 | *pp = p->next; | |
3662 | break; | |
3663 | } | |
3664 | if (q == NULL) | |
3665 | pp = &p->next; | |
3666 | } | |
3667 | *pp = edir->dyn_relocs; | |
3668 | } | |
3669 | ||
65f38f15 AM |
3670 | edir->dyn_relocs = eind->dyn_relocs; |
3671 | eind->dyn_relocs = NULL; | |
3672 | } | |
65f38f15 | 3673 | |
81848ca0 AM |
3674 | /* Copy over got entries that we may have already seen to the |
3675 | symbol which just became indirect. */ | |
411e1bfb AM |
3676 | if (eind->elf.got.glist != NULL) |
3677 | { | |
3678 | if (edir->elf.got.glist != NULL) | |
3679 | { | |
3680 | struct got_entry **entp; | |
3681 | struct got_entry *ent; | |
3682 | ||
3683 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3684 | { | |
3685 | struct got_entry *dent; | |
3686 | ||
3687 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3688 | if (dent->addend == ent->addend | |
e717da7e | 3689 | && dent->owner == ent->owner |
411e1bfb AM |
3690 | && dent->tls_type == ent->tls_type) |
3691 | { | |
3692 | dent->got.refcount += ent->got.refcount; | |
3693 | *entp = ent->next; | |
3694 | break; | |
3695 | } | |
3696 | if (dent == NULL) | |
3697 | entp = &ent->next; | |
3698 | } | |
3699 | *entp = edir->elf.got.glist; | |
3700 | } | |
3701 | ||
3702 | edir->elf.got.glist = eind->elf.got.glist; | |
3703 | eind->elf.got.glist = NULL; | |
3704 | } | |
3705 | ||
3706 | /* And plt entries. */ | |
40d16e0b | 3707 | move_plt_plist (eind, edir); |
411e1bfb | 3708 | |
fcfa13d2 | 3709 | if (eind->elf.dynindx != -1) |
411e1bfb | 3710 | { |
fcfa13d2 AM |
3711 | if (edir->elf.dynindx != -1) |
3712 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3713 | edir->elf.dynstr_index); | |
411e1bfb AM |
3714 | edir->elf.dynindx = eind->elf.dynindx; |
3715 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3716 | eind->elf.dynindx = -1; | |
3717 | eind->elf.dynstr_index = 0; | |
3718 | } | |
411e1bfb AM |
3719 | } |
3720 | ||
8387904d AM |
3721 | /* Find the function descriptor hash entry from the given function code |
3722 | hash entry FH. Link the entries via their OH fields. */ | |
3723 | ||
3724 | static struct ppc_link_hash_entry * | |
b31867b6 | 3725 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
3726 | { |
3727 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3728 | ||
3729 | if (fdh == NULL) | |
3730 | { | |
3731 | const char *fd_name = fh->elf.root.root.string + 1; | |
3732 | ||
3733 | fdh = (struct ppc_link_hash_entry *) | |
3734 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
3735 | if (fdh == NULL) |
3736 | return fdh; | |
3737 | ||
3738 | fdh->is_func_descriptor = 1; | |
3739 | fdh->oh = fh; | |
3740 | fh->is_func = 1; | |
3741 | fh->oh = fdh; | |
8387904d AM |
3742 | } |
3743 | ||
8c5b4e52 AM |
3744 | fdh = ppc_follow_link (fdh); |
3745 | fdh->is_func_descriptor = 1; | |
3746 | fdh->oh = fh; | |
3747 | return fdh; | |
8387904d AM |
3748 | } |
3749 | ||
8c5b4e52 | 3750 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
3751 | |
3752 | static struct ppc_link_hash_entry * | |
3753 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 3754 | struct ppc_link_hash_entry *fh) |
bb700d78 | 3755 | { |
8c5b4e52 AM |
3756 | bfd *abfd = fh->elf.root.u.undef.abfd; |
3757 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 3758 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
3759 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
3760 | ? BSF_WEAK | |
3761 | : BSF_GLOBAL); | |
3762 | ||
3763 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
3764 | fh->elf.root.root.string + 1, | |
3765 | flags, bfd_und_section_ptr, 0, | |
3766 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
3767 | return NULL; |
3768 | ||
3769 | fdh = (struct ppc_link_hash_entry *) bh; | |
3770 | fdh->elf.non_elf = 0; | |
908b32fc AM |
3771 | fdh->fake = 1; |
3772 | fdh->is_func_descriptor = 1; | |
3773 | fdh->oh = fh; | |
3774 | fh->is_func = 1; | |
3775 | fh->oh = fdh; | |
bb700d78 AM |
3776 | return fdh; |
3777 | } | |
3778 | ||
8387904d AM |
3779 | /* Fix function descriptor symbols defined in .opd sections to be |
3780 | function type. */ | |
555cd476 AM |
3781 | |
3782 | static bfd_boolean | |
c16153ae | 3783 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 3784 | struct bfd_link_info *info, |
555cd476 | 3785 | Elf_Internal_Sym *isym, |
6911b7dc | 3786 | const char **name, |
555cd476 AM |
3787 | flagword *flags ATTRIBUTE_UNUSED, |
3788 | asection **sec, | |
b53dfeb2 | 3789 | bfd_vma *value) |
555cd476 | 3790 | { |
b53dfeb2 | 3791 | if (*sec != NULL |
f1885d1e | 3792 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
3793 | { |
3794 | asection *code_sec; | |
3795 | ||
3796 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
3797 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
3798 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
3799 | ||
3800 | /* If the symbol is a function defined in .opd, and the function | |
3801 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 3802 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
3803 | && (*sec)->reloc_count != 0 |
3804 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
3805 | FALSE) != (bfd_vma) -1 | |
3806 | && discarded_section (code_sec)) | |
3807 | { | |
3808 | *sec = bfd_und_section_ptr; | |
3809 | isym->st_shndx = SHN_UNDEF; | |
3810 | } | |
3811 | } | |
dbd1e97e AM |
3812 | else if (*sec != NULL |
3813 | && strcmp ((*sec)->name, ".toc") == 0 | |
3814 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
3815 | { | |
3816 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
3817 | if (htab != NULL) | |
3818 | htab->params->object_in_toc = 1; | |
3819 | } | |
433817dd | 3820 | |
6911b7dc AM |
3821 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
3822 | { | |
3823 | if (abiversion (ibfd) == 0) | |
3824 | set_abiversion (ibfd, 2); | |
3825 | else if (abiversion (ibfd) == 1) | |
3826 | { | |
cf97bcb0 AM |
3827 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
3828 | " for ABI version 1"), *name); | |
6911b7dc AM |
3829 | bfd_set_error (bfd_error_bad_value); |
3830 | return FALSE; | |
3831 | } | |
3832 | } | |
3833 | ||
555cd476 AM |
3834 | return TRUE; |
3835 | } | |
3836 | ||
6911b7dc AM |
3837 | /* Merge non-visibility st_other attributes: local entry point. */ |
3838 | ||
3839 | static void | |
3840 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
3841 | const Elf_Internal_Sym *isym, | |
3842 | bfd_boolean definition, | |
3843 | bfd_boolean dynamic) | |
3844 | { | |
f378ab09 | 3845 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
3846 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
3847 | | ELF_ST_VISIBILITY (h->other)); | |
3848 | } | |
3849 | ||
8c5b4e52 AM |
3850 | /* Hook called on merging a symbol. We use this to clear "fake" since |
3851 | we now have a real symbol. */ | |
3852 | ||
3853 | static bfd_boolean | |
3854 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 3855 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
3856 | asection **psec ATTRIBUTE_UNUSED, |
3857 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
3858 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
3859 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
3860 | const asection *oldsec ATTRIBUTE_UNUSED) | |
3861 | { | |
3862 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
3863 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
3864 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
3865 | return TRUE; |
3866 | } | |
3867 | ||
8387904d | 3868 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
3869 | inclusion of a new ABI object archive that defines "bar". |
3870 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
3871 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
3872 | |
3873 | static struct elf_link_hash_entry * | |
3874 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
3875 | struct bfd_link_info *info, | |
3876 | const char *name) | |
3877 | { | |
3878 | struct elf_link_hash_entry *h; | |
3879 | char *dot_name; | |
3880 | size_t len; | |
3881 | ||
3882 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
3883 | if (h != NULL |
3884 | /* Don't return this sym if it is a fake function descriptor | |
3885 | created by add_symbol_adjust. */ | |
8c5b4e52 | 3886 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
3887 | return h; |
3888 | ||
3889 | if (name[0] == '.') | |
3890 | return h; | |
3891 | ||
3892 | len = strlen (name); | |
3893 | dot_name = bfd_alloc (abfd, len + 2); | |
3894 | if (dot_name == NULL) | |
e99955cd | 3895 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
3896 | dot_name[0] = '.'; |
3897 | memcpy (dot_name + 1, name, len + 1); | |
3898 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
3899 | bfd_release (abfd, dot_name); | |
3900 | return h; | |
3901 | } | |
3902 | ||
3903 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
3904 | new ABI object defines "bar". Well, at least, undefined dot symbols |
3905 | are made weak. This stops later archive searches from including an | |
3906 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
3907 | prevents the linker complaining about undefined symbols. |
3908 | We also check and correct mismatched symbol visibility here. The | |
3909 | most restrictive visibility of the function descriptor and the | |
3910 | function entry symbol is used. */ | |
8387904d AM |
3911 | |
3912 | static bfd_boolean | |
b3fac117 | 3913 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 3914 | { |
8387904d AM |
3915 | struct ppc_link_hash_table *htab; |
3916 | struct ppc_link_hash_entry *fdh; | |
3917 | ||
b3fac117 AM |
3918 | if (eh->elf.root.type == bfd_link_hash_warning) |
3919 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 3920 | |
8400d40d AM |
3921 | if (eh->elf.root.type == bfd_link_hash_indirect) |
3922 | return TRUE; | |
3923 | ||
b3fac117 AM |
3924 | if (eh->elf.root.root.string[0] != '.') |
3925 | abort (); | |
8387904d | 3926 | |
b3fac117 | 3927 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
3928 | if (htab == NULL) |
3929 | return FALSE; | |
3930 | ||
b31867b6 | 3931 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
3932 | if (fdh == NULL |
3933 | && !bfd_link_relocatable (info) | |
3934 | && (eh->elf.root.type == bfd_link_hash_undefined | |
3935 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
3936 | && eh->elf.ref_regular) | |
3937 | { | |
3938 | /* Make an undefined function descriptor sym, in order to | |
3939 | pull in an --as-needed shared lib. Archives are handled | |
3940 | elsewhere. */ | |
3941 | fdh = make_fdh (info, eh); | |
3942 | if (fdh == NULL) | |
3943 | return FALSE; | |
bb700d78 | 3944 | } |
8c5b4e52 AM |
3945 | |
3946 | if (fdh != NULL) | |
8387904d | 3947 | { |
35b0ce59 AM |
3948 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
3949 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
3950 | |
3951 | /* Make both descriptor and entry symbol have the most | |
3952 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
3953 | if (entry_vis < descr_vis) |
3954 | fdh->elf.other += entry_vis - descr_vis; | |
3955 | else if (entry_vis > descr_vis) | |
3956 | eh->elf.other += descr_vis - entry_vis; | |
3957 | ||
8c5b4e52 AM |
3958 | /* Propagate reference flags from entry symbol to function |
3959 | descriptor symbol. */ | |
bc4e12de | 3960 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 3961 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
3962 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
3963 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
3964 | ||
3965 | if (!fdh->elf.forced_local | |
3966 | && fdh->elf.dynindx == -1 | |
3967 | && fdh->elf.versioned != versioned_hidden | |
3968 | && (bfd_link_dll (info) | |
3969 | || fdh->elf.def_dynamic | |
3970 | || fdh->elf.ref_dynamic) | |
3971 | && (eh->elf.ref_regular | |
3972 | || eh->elf.def_regular)) | |
3973 | { | |
2cdcc330 | 3974 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 3975 | return FALSE; |
35b0ce59 | 3976 | } |
8387904d | 3977 | } |
99877b66 | 3978 | |
8387904d AM |
3979 | return TRUE; |
3980 | } | |
3981 | ||
f6c7c3e8 AM |
3982 | /* Set up opd section info and abiversion for IBFD, and process list |
3983 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 3984 | |
8387904d | 3985 | static bfd_boolean |
f6c7c3e8 | 3986 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 3987 | { |
99877b66 | 3988 | struct ppc_link_hash_table *htab; |
b3fac117 | 3989 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 3990 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 3991 | |
459609d6 | 3992 | if (opd != NULL && opd->size != 0) |
b3fac117 | 3993 | { |
b9399fcf AM |
3994 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
3995 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
3996 | ||
459609d6 AM |
3997 | if (abiversion (ibfd) == 0) |
3998 | set_abiversion (ibfd, 1); | |
8a2058b5 | 3999 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4000 | { |
695344c0 | 4001 | /* xgettext:c-format */ |
cf97bcb0 AM |
4002 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4003 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4004 | bfd_set_error (bfd_error_bad_value); |
4005 | return FALSE; | |
f6c7c3e8 | 4006 | } |
b9399fcf | 4007 | } |
f6c7c3e8 | 4008 | |
b9399fcf AM |
4009 | if (is_ppc64_elf (info->output_bfd)) |
4010 | { | |
4011 | /* For input files without an explicit abiversion in e_flags | |
4012 | we should have flagged any with symbol st_other bits set | |
4013 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4014 | Set the output abiversion if not yet set, and for any input | |
4015 | still ambiguous, take its abiversion from the output. | |
4016 | Differences in ABI are reported later. */ | |
4017 | if (abiversion (info->output_bfd) == 0) | |
4018 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4019 | else if (abiversion (ibfd) == 0) | |
4020 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4021 | } |
4022 | ||
459609d6 AM |
4023 | htab = ppc_hash_table (info); |
4024 | if (htab == NULL) | |
b9399fcf | 4025 | return TRUE; |
459609d6 | 4026 | |
b9399fcf AM |
4027 | if (opd != NULL && opd->size != 0 |
4028 | && (ibfd->flags & DYNAMIC) == 0 | |
4029 | && (opd->flags & SEC_RELOC) != 0 | |
4030 | && opd->reloc_count != 0 | |
4031 | && !bfd_is_abs_section (opd->output_section) | |
4032 | && info->gc_sections) | |
4033 | { | |
4034 | /* Garbage collection needs some extra help with .opd sections. | |
4035 | We don't want to necessarily keep everything referenced by | |
4036 | relocs in .opd, as that would keep all functions. Instead, | |
4037 | if we reference an .opd symbol (a function descriptor), we | |
4038 | want to keep the function code symbol's section. This is | |
4039 | easy for global symbols, but for local syms we need to keep | |
4040 | information about the associated function section. */ | |
4041 | bfd_size_type amt; | |
4042 | asection **opd_sym_map; | |
4043 | Elf_Internal_Shdr *symtab_hdr; | |
4044 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4045 | ||
4046 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4047 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4048 | if (opd_sym_map == NULL) | |
4049 | return FALSE; | |
4050 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4051 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4052 | info->keep_memory); | |
4053 | if (relocs == NULL) | |
4054 | return FALSE; | |
4055 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4056 | rel_end = relocs + opd->reloc_count - 1; | |
4057 | for (rel = relocs; rel < rel_end; rel++) | |
4058 | { | |
4059 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4060 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4061 | ||
4062 | if (r_type == R_PPC64_ADDR64 | |
4063 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4064 | && r_symndx < symtab_hdr->sh_info) | |
4065 | { | |
4066 | Elf_Internal_Sym *isym; | |
4067 | asection *s; | |
4068 | ||
4069 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
4070 | if (isym == NULL) | |
4071 | { | |
4072 | if (elf_section_data (opd)->relocs != relocs) | |
4073 | free (relocs); | |
4074 | return FALSE; | |
4075 | } | |
4076 | ||
4077 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4078 | if (s != NULL && s != opd) | |
4079 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4080 | } | |
4081 | } | |
4082 | if (elf_section_data (opd)->relocs != relocs) | |
4083 | free (relocs); | |
4084 | } | |
459609d6 AM |
4085 | |
4086 | p = &htab->dot_syms; | |
4087 | while ((eh = *p) != NULL) | |
4088 | { | |
4089 | *p = NULL; | |
4090 | if (&eh->elf == htab->elf.hgot) | |
4091 | ; | |
4092 | else if (htab->elf.hgot == NULL | |
4093 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4094 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4095 | else if (abiversion (ibfd) <= 1) |
4096 | { | |
4097 | htab->need_func_desc_adj = 1; | |
4098 | if (!add_symbol_adjust (eh, info)) | |
4099 | return FALSE; | |
4100 | } | |
459609d6 AM |
4101 | p = &eh->u.next_dot_sym; |
4102 | } | |
b3fac117 | 4103 | return TRUE; |
8387904d AM |
4104 | } |
4105 | ||
97fed1c9 JJ |
4106 | /* Undo hash table changes when an --as-needed input file is determined |
4107 | not to be needed. */ | |
4108 | ||
4109 | static bfd_boolean | |
e5034e59 AM |
4110 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4111 | struct bfd_link_info *info, | |
4112 | enum notice_asneeded_action act) | |
97fed1c9 | 4113 | { |
e5034e59 AM |
4114 | if (act == notice_not_needed) |
4115 | { | |
4116 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4117 | |
e5034e59 AM |
4118 | if (htab == NULL) |
4119 | return FALSE; | |
4dfe6ac6 | 4120 | |
e5034e59 AM |
4121 | htab->dot_syms = NULL; |
4122 | } | |
4123 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4124 | } |
4125 | ||
aa374f67 AM |
4126 | /* If --just-symbols against a final linked binary, then assume we need |
4127 | toc adjusting stubs when calling functions defined there. */ | |
4128 | ||
4129 | static void | |
4130 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4131 | { | |
4132 | if ((sec->flags & SEC_CODE) != 0 | |
4133 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4134 | && is_ppc64_elf (sec->owner)) | |
4135 | { | |
2c3f079f AM |
4136 | if (abiversion (sec->owner) >= 2 |
4137 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4138 | sec->has_toc_reloc = 1; |
4139 | } | |
4140 | _bfd_elf_link_just_syms (sec, info); | |
4141 | } | |
4142 | ||
e054468f | 4143 | static struct plt_entry ** |
4ce794b7 AM |
4144 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4145 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4146 | { |
4147 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4148 | struct plt_entry **local_plt; |
f961d9dd | 4149 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4150 | |
4151 | if (local_got_ents == NULL) | |
4152 | { | |
4153 | bfd_size_type size = symtab_hdr->sh_info; | |
4154 | ||
e054468f AM |
4155 | size *= (sizeof (*local_got_ents) |
4156 | + sizeof (*local_plt) | |
4157 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4158 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4159 | if (local_got_ents == NULL) |
e054468f | 4160 | return NULL; |
411e1bfb AM |
4161 | elf_local_got_ents (abfd) = local_got_ents; |
4162 | } | |
4163 | ||
37da22e5 | 4164 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4165 | { |
4166 | struct got_entry *ent; | |
4167 | ||
4168 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4169 | if (ent->addend == r_addend |
4170 | && ent->owner == abfd | |
4171 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4172 | break; |
4173 | if (ent == NULL) | |
4174 | { | |
4175 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4176 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4177 | if (ent == NULL) |
4178 | return FALSE; | |
4179 | ent->next = local_got_ents[r_symndx]; | |
4180 | ent->addend = r_addend; | |
e717da7e | 4181 | ent->owner = abfd; |
411e1bfb | 4182 | ent->tls_type = tls_type; |
927be08e | 4183 | ent->is_indirect = FALSE; |
411e1bfb AM |
4184 | ent->got.refcount = 0; |
4185 | local_got_ents[r_symndx] = ent; | |
4186 | } | |
4187 | ent->got.refcount += 1; | |
4188 | } | |
4189 | ||
e054468f | 4190 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4191 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4192 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4193 | |
4194 | return local_plt + r_symndx; | |
65f38f15 AM |
4195 | } |
4196 | ||
411e1bfb | 4197 | static bfd_boolean |
e054468f | 4198 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4199 | { |
411e1bfb | 4200 | struct plt_entry *ent; |
1e2f5b6e | 4201 | |
e054468f | 4202 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4203 | if (ent->addend == addend) |
4204 | break; | |
4205 | if (ent == NULL) | |
1e2f5b6e | 4206 | { |
411e1bfb | 4207 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4208 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4209 | if (ent == NULL) |
4210 | return FALSE; | |
e054468f | 4211 | ent->next = *plist; |
411e1bfb AM |
4212 | ent->addend = addend; |
4213 | ent->plt.refcount = 0; | |
e054468f | 4214 | *plist = ent; |
1e2f5b6e | 4215 | } |
411e1bfb | 4216 | ent->plt.refcount += 1; |
b34976b6 | 4217 | return TRUE; |
1e2f5b6e AM |
4218 | } |
4219 | ||
e054468f AM |
4220 | static bfd_boolean |
4221 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4222 | { | |
4223 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4224 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4225 | || r_type == R_PPC64_REL14 |
4226 | || r_type == R_PPC64_REL14_BRTAKEN | |
4227 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4228 | || r_type == R_PPC64_ADDR24 | |
4229 | || r_type == R_PPC64_ADDR14 | |
4230 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d AM |
4231 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
4232 | || r_type == R_PPC64_PLTCALL); | |
4233 | } | |
4234 | ||
4235 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4236 | ||
4237 | static bfd_boolean | |
4238 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4239 | { | |
4240 | return (r_type == R_PPC64_PLT16_HA | |
4241 | || r_type == R_PPC64_PLT16_HI | |
4242 | || r_type == R_PPC64_PLT16_LO | |
4243 | || r_type == R_PPC64_PLT16_LO_DS | |
4244 | || r_type == R_PPC64_PLTSEQ); | |
e054468f AM |
4245 | } |
4246 | ||
5bd4f169 | 4247 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4248 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4249 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4250 | |
b34976b6 | 4251 | static bfd_boolean |
4ce794b7 AM |
4252 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4253 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4254 | { |
65f38f15 | 4255 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4256 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4257 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4258 | const Elf_Internal_Rela *rel; |
4259 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4260 | asection *sreloc; |
3a71aa26 | 4261 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4262 | bfd_boolean is_opd; |
5bd4f169 | 4263 | |
0e1862bb | 4264 | if (bfd_link_relocatable (info)) |
b34976b6 | 4265 | return TRUE; |
5bd4f169 | 4266 | |
680a3378 AM |
4267 | /* Don't do anything special with non-loaded, non-alloced sections. |
4268 | In particular, any relocs in such sections should not affect GOT | |
4269 | and PLT reference counting (ie. we don't allow them to create GOT | |
4270 | or PLT entries), there's no possibility or desire to optimize TLS | |
4271 | relocs, and there's not much point in propagating relocs to shared | |
4272 | libs that the dynamic linker won't relocate. */ | |
4273 | if ((sec->flags & SEC_ALLOC) == 0) | |
4274 | return TRUE; | |
4275 | ||
0c8d6e5c | 4276 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4277 | |
65f38f15 | 4278 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4279 | if (htab == NULL) |
4280 | return FALSE; | |
4281 | ||
3a71aa26 AM |
4282 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4283 | FALSE, FALSE, TRUE); | |
4284 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4285 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4286 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4287 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4288 | sreloc = NULL; |
b9399fcf | 4289 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4290 | rel_end = relocs + sec->reloc_count; |
4291 | for (rel = relocs; rel < rel_end; rel++) | |
4292 | { | |
4293 | unsigned long r_symndx; | |
4294 | struct elf_link_hash_entry *h; | |
04c9666a | 4295 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4296 | int tls_type; |
7c8fe5c4 | 4297 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4298 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4299 | |
4300 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4301 | if (r_symndx < symtab_hdr->sh_info) | |
4302 | h = NULL; | |
4303 | else | |
973a3492 L |
4304 | { |
4305 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4306 | h = elf_follow_link (h); |
1c865ab2 AM |
4307 | |
4308 | if (h == htab->elf.hgot) | |
4309 | sec->has_toc_reloc = 1; | |
973a3492 | 4310 | } |
5bd4f169 | 4311 | |
727fc41e | 4312 | tls_type = 0; |
e054468f | 4313 | ifunc = NULL; |
25f23106 AM |
4314 | if (h != NULL) |
4315 | { | |
4316 | if (h->type == STT_GNU_IFUNC) | |
4317 | { | |
4318 | h->needs_plt = 1; | |
4319 | ifunc = &h->plt.plist; | |
4320 | } | |
4321 | } | |
4322 | else | |
4323 | { | |
4324 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4325 | abfd, r_symndx); | |
4326 | if (isym == NULL) | |
4327 | return FALSE; | |
4328 | ||
4329 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4330 | { | |
4331 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
37da22e5 AM |
4332 | rel->r_addend, |
4333 | NON_GOT | PLT_IFUNC); | |
25f23106 AM |
4334 | if (ifunc == NULL) |
4335 | return FALSE; | |
4336 | } | |
4337 | } | |
727fc41e | 4338 | |
cbf95972 | 4339 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4340 | switch (r_type) |
5bd4f169 | 4341 | { |
727fc41e AM |
4342 | case R_PPC64_TLSGD: |
4343 | case R_PPC64_TLSLD: | |
4344 | /* These special tls relocs tie a call to __tls_get_addr with | |
4345 | its parameter symbol. */ | |
37da22e5 AM |
4346 | if (h != NULL) |
4347 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
4348 | else | |
4349 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4350 | rel->r_addend, | |
4351 | NON_GOT | TLS_TLS | TLS_MARK)) | |
4352 | return FALSE; | |
4353 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4354 | break; |
4355 | ||
411e1bfb AM |
4356 | case R_PPC64_GOT_TLSLD16: |
4357 | case R_PPC64_GOT_TLSLD16_LO: | |
4358 | case R_PPC64_GOT_TLSLD16_HI: | |
4359 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4360 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4361 | goto dogottls; |
4362 | ||
4363 | case R_PPC64_GOT_TLSGD16: | |
4364 | case R_PPC64_GOT_TLSGD16_LO: | |
4365 | case R_PPC64_GOT_TLSGD16_HI: | |
4366 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4367 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4368 | goto dogottls; |
4369 | ||
4370 | case R_PPC64_GOT_TPREL16_DS: | |
4371 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4372 | case R_PPC64_GOT_TPREL16_HI: | |
4373 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 4374 | if (bfd_link_dll (info)) |
411e1bfb AM |
4375 | info->flags |= DF_STATIC_TLS; |
4376 | tls_type = TLS_TLS | TLS_TPREL; | |
4377 | goto dogottls; | |
4378 | ||
4379 | case R_PPC64_GOT_DTPREL16_DS: | |
4380 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4381 | case R_PPC64_GOT_DTPREL16_HI: | |
4382 | case R_PPC64_GOT_DTPREL16_HA: | |
4383 | tls_type = TLS_TLS | TLS_DTPREL; | |
4384 | dogottls: | |
4385 | sec->has_tls_reloc = 1; | |
1a0670f3 | 4386 | /* Fall through */ |
411e1bfb | 4387 | |
5bd4f169 | 4388 | case R_PPC64_GOT16: |
5bd4f169 | 4389 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4390 | case R_PPC64_GOT16_HA: |
4391 | case R_PPC64_GOT16_HI: | |
4392 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4393 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4394 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4395 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4396 | if (r_type == R_PPC64_GOT_TLSLD16 |
4397 | || r_type == R_PPC64_GOT_TLSGD16 | |
4398 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4399 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4400 | || r_type == R_PPC64_GOT16 | |
4401 | || r_type == R_PPC64_GOT16_DS) | |
4402 | { | |
4403 | htab->do_multi_toc = 1; | |
d77c8a4b | 4404 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4405 | } |
4406 | ||
e717da7e AM |
4407 | if (ppc64_elf_tdata (abfd)->got == NULL |
4408 | && !create_got_section (abfd, info)) | |
b34976b6 | 4409 | return FALSE; |
5bd4f169 AM |
4410 | |
4411 | if (h != NULL) | |
4412 | { | |
411e1bfb AM |
4413 | struct ppc_link_hash_entry *eh; |
4414 | struct got_entry *ent; | |
65f38f15 | 4415 | |
411e1bfb AM |
4416 | eh = (struct ppc_link_hash_entry *) h; |
4417 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4418 | if (ent->addend == rel->r_addend | |
e717da7e | 4419 | && ent->owner == abfd |
411e1bfb AM |
4420 | && ent->tls_type == tls_type) |
4421 | break; | |
4422 | if (ent == NULL) | |
5bd4f169 | 4423 | { |
411e1bfb | 4424 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4425 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4426 | if (ent == NULL) |
b34976b6 | 4427 | return FALSE; |
411e1bfb AM |
4428 | ent->next = eh->elf.got.glist; |
4429 | ent->addend = rel->r_addend; | |
e717da7e | 4430 | ent->owner = abfd; |
411e1bfb | 4431 | ent->tls_type = tls_type; |
927be08e | 4432 | ent->is_indirect = FALSE; |
411e1bfb AM |
4433 | ent->got.refcount = 0; |
4434 | eh->elf.got.glist = ent; | |
5bd4f169 | 4435 | } |
411e1bfb | 4436 | ent->got.refcount += 1; |
e7b938ca | 4437 | eh->tls_mask |= tls_type; |
5bd4f169 | 4438 | } |
411e1bfb AM |
4439 | else |
4440 | /* This is a global offset table entry for a local symbol. */ | |
4441 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4442 | rel->r_addend, tls_type)) | |
4443 | return FALSE; | |
a345bc8d AM |
4444 | |
4445 | /* We may also need a plt entry if the symbol turns out to be | |
4446 | an ifunc. */ | |
0e1862bb | 4447 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
4448 | { |
4449 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
4450 | return FALSE; | |
4451 | } | |
5bd4f169 AM |
4452 | break; |
4453 | ||
5bd4f169 | 4454 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4455 | case R_PPC64_PLT16_HI: |
4456 | case R_PPC64_PLT16_LO: | |
08be3224 | 4457 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
4458 | case R_PPC64_PLT32: |
4459 | case R_PPC64_PLT64: | |
cbf95972 AM |
4460 | /* This symbol requires a procedure linkage table entry. */ |
4461 | plt_list = ifunc; | |
4462 | if (h != NULL) | |
e054468f | 4463 | { |
e054468f AM |
4464 | h->needs_plt = 1; |
4465 | if (h->root.root.string[0] == '.' | |
4466 | && h->root.root.string[1] != '\0') | |
4467 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 4468 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
4469 | plt_list = &h->plt.plist; |
4470 | } | |
4471 | if (plt_list == NULL) | |
2d7ad24e AM |
4472 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
4473 | rel->r_addend, | |
4474 | NON_GOT | PLT_KEEP); | |
cbf95972 AM |
4475 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
4476 | return FALSE; | |
5bd4f169 AM |
4477 | break; |
4478 | ||
4479 | /* The following relocations don't need to propagate the | |
4480 | relocation if linking a shared object since they are | |
4481 | section relative. */ | |
4482 | case R_PPC64_SECTOFF: | |
4483 | case R_PPC64_SECTOFF_LO: | |
4484 | case R_PPC64_SECTOFF_HI: | |
4485 | case R_PPC64_SECTOFF_HA: | |
4486 | case R_PPC64_SECTOFF_DS: | |
4487 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4488 | case R_PPC64_DTPREL16: |
4489 | case R_PPC64_DTPREL16_LO: | |
4490 | case R_PPC64_DTPREL16_HI: | |
4491 | case R_PPC64_DTPREL16_HA: | |
4492 | case R_PPC64_DTPREL16_DS: | |
4493 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4494 | case R_PPC64_DTPREL16_HIGH: |
4495 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4496 | case R_PPC64_DTPREL16_HIGHER: |
4497 | case R_PPC64_DTPREL16_HIGHERA: | |
4498 | case R_PPC64_DTPREL16_HIGHEST: | |
4499 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4500 | break; |
4501 | ||
ad8e1ba5 | 4502 | /* Nor do these. */ |
25f23106 AM |
4503 | case R_PPC64_REL16: |
4504 | case R_PPC64_REL16_LO: | |
4505 | case R_PPC64_REL16_HI: | |
4506 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4507 | case R_PPC64_REL16_HIGH: |
4508 | case R_PPC64_REL16_HIGHA: | |
4509 | case R_PPC64_REL16_HIGHER: | |
4510 | case R_PPC64_REL16_HIGHERA: | |
4511 | case R_PPC64_REL16_HIGHEST: | |
4512 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 4513 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4514 | break; |
4515 | ||
45965137 AM |
4516 | /* Not supported as a dynamic relocation. */ |
4517 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4518 | if (bfd_link_pic (info)) |
45965137 AM |
4519 | { |
4520 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4521 | ppc_howto_init (); | |
695344c0 | 4522 | /* xgettext:c-format */ |
174d0a74 | 4523 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4524 | "in shared libraries and PIEs\n"), |
45965137 AM |
4525 | abfd, sec, rel->r_offset, |
4526 | ppc64_elf_howto_table[r_type]->name); | |
4527 | bfd_set_error (bfd_error_bad_value); | |
4528 | return FALSE; | |
4529 | } | |
4530 | break; | |
4531 | ||
ad8e1ba5 | 4532 | case R_PPC64_TOC16: |
33c0ec9d AM |
4533 | case R_PPC64_TOC16_DS: |
4534 | htab->do_multi_toc = 1; | |
d77c8a4b | 4535 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4536 | /* Fall through. */ |
ad8e1ba5 AM |
4537 | case R_PPC64_TOC16_LO: |
4538 | case R_PPC64_TOC16_HI: | |
4539 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4540 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4541 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4542 | break; |
4543 | ||
006589cf AM |
4544 | /* Marker reloc. */ |
4545 | case R_PPC64_ENTRY: | |
4546 | break; | |
4547 | ||
5bd4f169 AM |
4548 | /* This relocation describes the C++ object vtable hierarchy. |
4549 | Reconstruct it for later use during GC. */ | |
4550 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4551 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4552 | return FALSE; |
5bd4f169 AM |
4553 | break; |
4554 | ||
4555 | /* This relocation describes which C++ vtable entries are actually | |
4556 | used. Record for later use during GC. */ | |
4557 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4558 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4559 | return FALSE; |
5bd4f169 AM |
4560 | break; |
4561 | ||
721956f4 AM |
4562 | case R_PPC64_REL14: |
4563 | case R_PPC64_REL14_BRTAKEN: | |
4564 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4565 | { |
4566 | asection *dest = NULL; | |
4567 | ||
4568 | /* Heuristic: If jumping outside our section, chances are | |
4569 | we are going to need a stub. */ | |
4570 | if (h != NULL) | |
4571 | { | |
4572 | /* If the sym is weak it may be overridden later, so | |
4573 | don't assume we know where a weak sym lives. */ | |
4574 | if (h->root.type == bfd_link_hash_defined) | |
4575 | dest = h->root.u.def.section; | |
4576 | } | |
4577 | else | |
87d72d41 AM |
4578 | { |
4579 | Elf_Internal_Sym *isym; | |
4580 | ||
4581 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4582 | abfd, r_symndx); | |
4583 | if (isym == NULL) | |
4584 | return FALSE; | |
4585 | ||
4586 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4587 | } | |
4588 | ||
220c76dd | 4589 | if (dest != sec) |
7c8fe5c4 | 4590 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4591 | } |
3e04d765 AM |
4592 | goto rel24; |
4593 | ||
4594 | case R_PPC64_PLTCALL: | |
4595 | ppc64_elf_section_data (sec)->has_pltcall = 1; | |
721956f4 AM |
4596 | /* Fall through. */ |
4597 | ||
5d1634d7 | 4598 | case R_PPC64_REL24: |
05d0e962 | 4599 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4600 | rel24: |
cbf95972 AM |
4601 | plt_list = ifunc; |
4602 | if (h != NULL) | |
5d1634d7 | 4603 | { |
e054468f AM |
4604 | h->needs_plt = 1; |
4605 | if (h->root.root.string[0] == '.' | |
4606 | && h->root.root.string[1] != '\0') | |
4607 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 4608 | |
3a71aa26 | 4609 | if (h == tga || h == dottga) |
cbf95972 AM |
4610 | { |
4611 | sec->has_tls_reloc = 1; | |
4612 | if (rel != relocs | |
4613 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4614 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4615 | /* We have a new-style __tls_get_addr call with | |
4616 | a marker reloc. */ | |
4617 | ; | |
4618 | else | |
4619 | /* Mark this section as having an old-style call. */ | |
4620 | sec->has_tls_get_addr_call = 1; | |
4621 | } | |
4622 | plt_list = &h->plt.plist; | |
411e1bfb | 4623 | } |
cbf95972 AM |
4624 | |
4625 | /* We may need a .plt entry if the function this reloc | |
4626 | refers to is in a shared lib. */ | |
4627 | if (plt_list | |
4628 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
4629 | return FALSE; | |
411e1bfb AM |
4630 | break; |
4631 | ||
cbf95972 AM |
4632 | case R_PPC64_ADDR14: |
4633 | case R_PPC64_ADDR14_BRNTAKEN: | |
4634 | case R_PPC64_ADDR14_BRTAKEN: | |
4635 | case R_PPC64_ADDR24: | |
4636 | goto dodyn; | |
4637 | ||
411e1bfb AM |
4638 | case R_PPC64_TPREL64: |
4639 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 4640 | if (bfd_link_dll (info)) |
411e1bfb AM |
4641 | info->flags |= DF_STATIC_TLS; |
4642 | goto dotlstoc; | |
4643 | ||
4644 | case R_PPC64_DTPMOD64: | |
4645 | if (rel + 1 < rel_end | |
4646 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4647 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4648 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4649 | else |
951fd09b | 4650 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4651 | goto dotlstoc; |
4652 | ||
4653 | case R_PPC64_DTPREL64: | |
4654 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4655 | if (rel != relocs | |
4656 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4657 | && rel[-1].r_offset == rel->r_offset - 8) | |
4658 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4659 | Don't mark with TLS_DTPREL. */ | |
4660 | goto dodyn; | |
4661 | ||
4662 | dotlstoc: | |
4663 | sec->has_tls_reloc = 1; | |
4664 | if (h != NULL) | |
4665 | { | |
4666 | struct ppc_link_hash_entry *eh; | |
4667 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4668 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4669 | } |
4670 | else | |
4671 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4672 | rel->r_addend, tls_type)) | |
4673 | return FALSE; | |
4674 | ||
7c8fe5c4 AM |
4675 | ppc64_sec = ppc64_elf_section_data (sec); |
4676 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4677 | { |
3a71aa26 AM |
4678 | bfd_size_type amt; |
4679 | ||
e7b938ca | 4680 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
4681 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
4682 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
4683 | if (ppc64_sec->u.toc.symndx == NULL) | |
4684 | return FALSE; | |
4685 | amt = sec->size * sizeof (bfd_vma) / 8; | |
4686 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
4687 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 4688 | return FALSE; |
7c8fe5c4 AM |
4689 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4690 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4691 | } |
4692 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
4693 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
4694 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
4695 | |
4696 | /* Mark the second slot of a GD or LD entry. | |
4697 | -1 to indicate GD and -2 to indicate LD. */ | |
4698 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 4699 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4700 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 4701 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4702 | goto dodyn; |
4703 | ||
4704 | case R_PPC64_TPREL16: | |
4705 | case R_PPC64_TPREL16_LO: | |
4706 | case R_PPC64_TPREL16_HI: | |
4707 | case R_PPC64_TPREL16_HA: | |
4708 | case R_PPC64_TPREL16_DS: | |
4709 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
4710 | case R_PPC64_TPREL16_HIGH: |
4711 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
4712 | case R_PPC64_TPREL16_HIGHER: |
4713 | case R_PPC64_TPREL16_HIGHERA: | |
4714 | case R_PPC64_TPREL16_HIGHEST: | |
4715 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
4716 | if (bfd_link_dll (info)) |
4717 | info->flags |= DF_STATIC_TLS; | |
4718 | goto dodyn; | |
5d1634d7 | 4719 | |
e86ce104 | 4720 | case R_PPC64_ADDR64: |
b9399fcf | 4721 | if (is_opd |
1e2f5b6e | 4722 | && rel + 1 < rel_end |
4ce794b7 | 4723 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4724 | { |
8387904d | 4725 | if (h != NULL) |
8c5b4e52 | 4726 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 4727 | } |
e86ce104 AM |
4728 | /* Fall through. */ |
4729 | ||
65f38f15 AM |
4730 | case R_PPC64_ADDR16: |
4731 | case R_PPC64_ADDR16_DS: | |
4732 | case R_PPC64_ADDR16_HA: | |
4733 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
4734 | case R_PPC64_ADDR16_HIGH: |
4735 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
4736 | case R_PPC64_ADDR16_HIGHER: |
4737 | case R_PPC64_ADDR16_HIGHERA: | |
4738 | case R_PPC64_ADDR16_HIGHEST: | |
4739 | case R_PPC64_ADDR16_HIGHESTA: | |
4740 | case R_PPC64_ADDR16_LO: | |
4741 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 4742 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
4743 | && rel->r_addend == 0) |
4744 | { | |
4745 | /* We may need a .plt entry if this reloc refers to a | |
4746 | function in a shared lib. */ | |
4747 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
4748 | return FALSE; | |
4749 | h->pointer_equality_needed = 1; | |
4750 | } | |
4751 | /* Fall through. */ | |
4752 | ||
4753 | case R_PPC64_REL30: | |
4754 | case R_PPC64_REL32: | |
4755 | case R_PPC64_REL64: | |
65f38f15 | 4756 | case R_PPC64_ADDR32: |
65f38f15 AM |
4757 | case R_PPC64_UADDR16: |
4758 | case R_PPC64_UADDR32: | |
4759 | case R_PPC64_UADDR64: | |
5bd4f169 | 4760 | case R_PPC64_TOC: |
0e1862bb | 4761 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 4762 | /* We may need a copy reloc. */ |
f5385ebf | 4763 | h->non_got_ref = 1; |
81848ca0 | 4764 | |
41bd81ab | 4765 | /* Don't propagate .opd relocs. */ |
b9399fcf | 4766 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 4767 | break; |
e86ce104 | 4768 | |
65f38f15 AM |
4769 | /* If we are creating a shared library, and this is a reloc |
4770 | against a global symbol, or a non PC relative reloc | |
4771 | against a local symbol, then we need to copy the reloc | |
4772 | into the shared library. However, if we are linking with | |
4773 | -Bsymbolic, we do not need to copy a reloc against a | |
4774 | global symbol which is defined in an object we are | |
4775 | including in the link (i.e., DEF_REGULAR is set). At | |
4776 | this point we have not seen all the input files, so it is | |
4777 | possible that DEF_REGULAR is not set now but will be set | |
4778 | later (it is never cleared). In case of a weak definition, | |
4779 | DEF_REGULAR may be cleared later by a strong definition in | |
4780 | a shared library. We account for that possibility below by | |
f4656909 | 4781 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4782 | table entry. A similar situation occurs when creating |
4783 | shared libraries and symbol visibility changes render the | |
4784 | symbol local. | |
4785 | ||
4786 | If on the other hand, we are creating an executable, we | |
4787 | may need to keep relocations for symbols satisfied by a | |
4788 | dynamic library if we manage to avoid copy relocs for the | |
4789 | symbol. */ | |
411e1bfb | 4790 | dodyn: |
0e1862bb | 4791 | if ((bfd_link_pic (info) |
1d483afe | 4792 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 4793 | || (h != NULL |
198f1157 | 4794 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 4795 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 4796 | || !h->def_regular)))) |
f4656909 | 4797 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 4798 | && !bfd_link_pic (info) |
65f38f15 AM |
4799 | && h != NULL |
4800 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 4801 | || !h->def_regular)) |
0e1862bb | 4802 | || (!bfd_link_pic (info) |
25f23106 | 4803 | && ifunc != NULL)) |
5bd4f169 | 4804 | { |
65f38f15 AM |
4805 | /* We must copy these reloc types into the output file. |
4806 | Create a reloc section in dynobj and make room for | |
4807 | this reloc. */ | |
5bd4f169 AM |
4808 | if (sreloc == NULL) |
4809 | { | |
83bac4b0 NC |
4810 | sreloc = _bfd_elf_make_dynamic_reloc_section |
4811 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 4812 | |
5bd4f169 | 4813 | if (sreloc == NULL) |
83bac4b0 | 4814 | return FALSE; |
5bd4f169 AM |
4815 | } |
4816 | ||
65f38f15 AM |
4817 | /* If this is a global symbol, we count the number of |
4818 | relocations we need for this symbol. */ | |
4819 | if (h != NULL) | |
4820 | { | |
19e08130 AM |
4821 | struct elf_dyn_relocs *p; |
4822 | struct elf_dyn_relocs **head; | |
4823 | ||
ec338859 | 4824 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
4825 | p = *head; |
4826 | if (p == NULL || p->sec != sec) | |
4827 | { | |
4828 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4829 | if (p == NULL) | |
4830 | return FALSE; | |
4831 | p->next = *head; | |
4832 | *head = p; | |
4833 | p->sec = sec; | |
4834 | p->count = 0; | |
4835 | p->pc_count = 0; | |
4836 | } | |
4837 | p->count += 1; | |
4838 | if (!must_be_dyn_reloc (info, r_type)) | |
4839 | p->pc_count += 1; | |
65f38f15 AM |
4840 | } |
4841 | else | |
4842 | { | |
ec338859 AM |
4843 | /* Track dynamic relocs needed for local syms too. |
4844 | We really need local syms available to do this | |
4845 | easily. Oh well. */ | |
19e08130 AM |
4846 | struct ppc_dyn_relocs *p; |
4847 | struct ppc_dyn_relocs **head; | |
4848 | bfd_boolean is_ifunc; | |
ec338859 | 4849 | asection *s; |
6edfbbad | 4850 | void *vpp; |
87d72d41 | 4851 | Elf_Internal_Sym *isym; |
6edfbbad | 4852 | |
87d72d41 AM |
4853 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4854 | abfd, r_symndx); | |
4855 | if (isym == NULL) | |
b34976b6 | 4856 | return FALSE; |
ec338859 | 4857 | |
87d72d41 AM |
4858 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4859 | if (s == NULL) | |
4860 | s = sec; | |
4861 | ||
6edfbbad | 4862 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
4863 | head = (struct ppc_dyn_relocs **) vpp; |
4864 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
4865 | p = *head; | |
4866 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
4867 | p = p->next; | |
4868 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
4869 | { | |
4870 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4871 | if (p == NULL) | |
4872 | return FALSE; | |
4873 | p->next = *head; | |
4874 | *head = p; | |
4875 | p->sec = sec; | |
4876 | p->ifunc = is_ifunc; | |
4877 | p->count = 0; | |
4878 | } | |
4879 | p->count += 1; | |
ec338859 | 4880 | } |
65f38f15 | 4881 | } |
5bd4f169 | 4882 | break; |
65f38f15 AM |
4883 | |
4884 | default: | |
96e0dda4 | 4885 | break; |
5bd4f169 AM |
4886 | } |
4887 | } | |
4888 | ||
b34976b6 | 4889 | return TRUE; |
5bd4f169 AM |
4890 | } |
4891 | ||
ee67d69a AM |
4892 | /* Merge backend specific data from an object file to the output |
4893 | object file when linking. */ | |
4894 | ||
4895 | static bfd_boolean | |
50e03d47 | 4896 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 4897 | { |
50e03d47 | 4898 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
4899 | unsigned long iflags, oflags; |
4900 | ||
4901 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
4902 | return TRUE; | |
4903 | ||
4904 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
4905 | return TRUE; | |
4906 | ||
50e03d47 | 4907 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
4908 | return FALSE; |
4909 | ||
4910 | iflags = elf_elfheader (ibfd)->e_flags; | |
4911 | oflags = elf_elfheader (obfd)->e_flags; | |
4912 | ||
f6c7c3e8 | 4913 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 4914 | { |
4eca0228 | 4915 | _bfd_error_handler |
695344c0 | 4916 | /* xgettext:c-format */ |
871b3ab2 | 4917 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
4918 | bfd_set_error (bfd_error_bad_value); |
4919 | return FALSE; | |
4920 | } | |
f6c7c3e8 | 4921 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 4922 | { |
4eca0228 | 4923 | _bfd_error_handler |
695344c0 | 4924 | /* xgettext:c-format */ |
871b3ab2 | 4925 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
4926 | ibfd, iflags, oflags); |
4927 | bfd_set_error (bfd_error_bad_value); | |
4928 | return FALSE; | |
4929 | } | |
4930 | ||
4a91d0ba AM |
4931 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
4932 | return FALSE; | |
005d79fd | 4933 | |
ee67d69a | 4934 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 4935 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
4936 | } |
4937 | ||
4938 | static bfd_boolean | |
4939 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
4940 | { | |
4941 | /* Print normal ELF private data. */ | |
4942 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4943 | ||
4944 | if (elf_elfheader (abfd)->e_flags != 0) | |
4945 | { | |
4946 | FILE *file = ptr; | |
4947 | ||
ee67d69a AM |
4948 | fprintf (file, _("private flags = 0x%lx:"), |
4949 | elf_elfheader (abfd)->e_flags); | |
4950 | ||
4951 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
4952 | fprintf (file, _(" [abiv%ld]"), | |
4953 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
4954 | fputc ('\n', file); | |
4955 | } | |
4956 | ||
4957 | return TRUE; | |
4958 | } | |
4959 | ||
8387904d | 4960 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
4961 | of the code entry point, and its section, which must be in the same |
4962 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
4963 | |
4964 | static bfd_vma | |
4965 | opd_entry_value (asection *opd_sec, | |
4966 | bfd_vma offset, | |
4967 | asection **code_sec, | |
aef36ac1 AM |
4968 | bfd_vma *code_off, |
4969 | bfd_boolean in_code_sec) | |
8387904d AM |
4970 | { |
4971 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4972 | Elf_Internal_Rela *relocs; |
8387904d | 4973 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4974 | bfd_vma val; |
8387904d | 4975 | |
9f296da3 AM |
4976 | /* No relocs implies we are linking a --just-symbols object, or looking |
4977 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
4978 | if (opd_sec->reloc_count == 0) |
4979 | { | |
729eabd5 | 4980 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 4981 | |
729eabd5 AM |
4982 | if (contents == NULL) |
4983 | { | |
4984 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
4985 | return (bfd_vma) -1; | |
4986 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
4987 | } | |
ee1e4ede | 4988 | |
dbb3fbbb | 4989 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 4990 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
4991 | return (bfd_vma) -1; |
4992 | ||
729eabd5 | 4993 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
4994 | if (code_sec != NULL) |
4995 | { | |
4996 | asection *sec, *likely = NULL; | |
ee1e4ede | 4997 | |
aef36ac1 | 4998 | if (in_code_sec) |
4b85d634 | 4999 | { |
aef36ac1 AM |
5000 | sec = *code_sec; |
5001 | if (sec->vma <= val | |
5002 | && val < sec->vma + sec->size) | |
5003 | likely = sec; | |
5004 | else | |
5005 | val = -1; | |
5006 | } | |
5007 | else | |
5008 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5009 | if (sec->vma <= val | |
5010 | && (sec->flags & SEC_LOAD) != 0 | |
5011 | && (sec->flags & SEC_ALLOC) != 0) | |
5012 | likely = sec; | |
5013 | if (likely != NULL) | |
5014 | { | |
5015 | *code_sec = likely; | |
5016 | if (code_off != NULL) | |
5017 | *code_off = val - likely->vma; | |
4b85d634 AM |
5018 | } |
5019 | } | |
aef36ac1 | 5020 | return val; |
4b85d634 AM |
5021 | } |
5022 | ||
0c8d6e5c | 5023 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5024 | |
729eabd5 | 5025 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5026 | if (relocs == NULL) |
5027 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5028 | /* PR 17512: file: df8e1fd6. */ |
5029 | if (relocs == NULL) | |
5030 | return (bfd_vma) -1; | |
645ea6a9 | 5031 | |
8387904d | 5032 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5033 | lo = relocs; |
8387904d | 5034 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5035 | val = (bfd_vma) -1; |
8387904d AM |
5036 | while (lo < hi) |
5037 | { | |
5038 | look = lo + (hi - lo) / 2; | |
5039 | if (look->r_offset < offset) | |
5040 | lo = look + 1; | |
5041 | else if (look->r_offset > offset) | |
5042 | hi = look; | |
5043 | else | |
5044 | { | |
0ffa91dd NC |
5045 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5046 | ||
8387904d AM |
5047 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5048 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5049 | { | |
5050 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5051 | asection *sec = NULL; |
8387904d | 5052 | |
b53dfeb2 AM |
5053 | if (symndx >= symtab_hdr->sh_info |
5054 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5055 | { |
5056 | struct elf_link_hash_entry **sym_hashes; | |
5057 | struct elf_link_hash_entry *rh; | |
5058 | ||
5059 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5060 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5061 | if (rh != NULL) |
5062 | { | |
5063 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5064 | if (rh->root.type != bfd_link_hash_defined |
5065 | && rh->root.type != bfd_link_hash_defweak) | |
5066 | break; | |
5067 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5068 | { |
bb854a36 AM |
5069 | val = rh->root.u.def.value; |
5070 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5071 | } |
5072 | } | |
5073 | } | |
5074 | ||
5075 | if (sec == NULL) | |
5076 | { | |
5077 | Elf_Internal_Sym *sym; | |
5078 | ||
5079 | if (symndx < symtab_hdr->sh_info) | |
5080 | { | |
5081 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5082 | if (sym == NULL) | |
5083 | { | |
5084 | size_t symcnt = symtab_hdr->sh_info; | |
5085 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5086 | symcnt, 0, | |
5087 | NULL, NULL, NULL); | |
5088 | if (sym == NULL) | |
5089 | break; | |
5090 | symtab_hdr->contents = (bfd_byte *) sym; | |
5091 | } | |
5092 | sym += symndx; | |
128205bb AM |
5093 | } |
5094 | else | |
5095 | { | |
b53dfeb2 AM |
5096 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5097 | 1, symndx, | |
5098 | NULL, NULL, NULL); | |
128205bb AM |
5099 | if (sym == NULL) |
5100 | break; | |
128205bb | 5101 | } |
b53dfeb2 AM |
5102 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5103 | if (sec == NULL) | |
5104 | break; | |
5105 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5106 | val = sym->st_value; | |
8387904d | 5107 | } |
b53dfeb2 | 5108 | |
8387904d AM |
5109 | val += look->r_addend; |
5110 | if (code_off != NULL) | |
5111 | *code_off = val; | |
5112 | if (code_sec != NULL) | |
aef36ac1 AM |
5113 | { |
5114 | if (in_code_sec && *code_sec != sec) | |
5115 | return -1; | |
5116 | else | |
5117 | *code_sec = sec; | |
5118 | } | |
b53dfeb2 | 5119 | if (sec->output_section != NULL) |
8387904d | 5120 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5121 | } |
5122 | break; | |
5123 | } | |
5124 | } | |
645ea6a9 | 5125 | |
645ea6a9 | 5126 | return val; |
8387904d AM |
5127 | } |
5128 | ||
aef36ac1 AM |
5129 | /* If the ELF symbol SYM might be a function in SEC, return the |
5130 | function size and set *CODE_OFF to the function's entry point, | |
5131 | otherwise return zero. */ | |
9f296da3 | 5132 | |
aef36ac1 AM |
5133 | static bfd_size_type |
5134 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5135 | bfd_vma *code_off) | |
9f296da3 | 5136 | { |
aef36ac1 AM |
5137 | bfd_size_type size; |
5138 | ||
5139 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5140 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5141 | return 0; | |
5142 | ||
5143 | size = 0; | |
5144 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5145 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5146 | ||
5147 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5148 | { |
b07bca4e AM |
5149 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5150 | bfd_vma symval = sym->value; | |
5151 | ||
5152 | if (opd != NULL | |
5153 | && opd->adjust != NULL | |
5154 | && elf_section_data (sym->section)->relocs != NULL) | |
5155 | { | |
5156 | /* opd_entry_value will use cached relocs that have been | |
5157 | adjusted, but with raw symbols. That means both local | |
5158 | and global symbols need adjusting. */ | |
5159 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5160 | if (adjust == -1) | |
5161 | return 0; | |
5162 | symval += adjust; | |
5163 | } | |
5164 | ||
5165 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5166 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5167 | return 0; | |
5168 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5169 | symbol. This size has nothing to do with the code size of the | |
5170 | function, which is what we're supposed to return, but the | |
5171 | code size isn't available without looking up the dot-sym. | |
5172 | However, doing that would be a waste of time particularly | |
5173 | since elf_find_function will look at the dot-sym anyway. | |
5174 | Now, elf_find_function will keep the largest size of any | |
5175 | function sym found at the code address of interest, so return | |
5176 | 1 here to avoid it incorrectly caching a larger function size | |
5177 | for a small function. This does mean we return the wrong | |
5178 | size for a new-ABI function of size 24, but all that does is | |
5179 | disable caching for such functions. */ | |
5180 | if (size == 24) | |
5181 | size = 1; | |
9f296da3 | 5182 | } |
aef36ac1 AM |
5183 | else |
5184 | { | |
5185 | if (sym->section != sec) | |
5186 | return 0; | |
5187 | *code_off = sym->value; | |
5188 | } | |
5189 | if (size == 0) | |
5190 | size = 1; | |
5191 | return size; | |
9f296da3 AM |
5192 | } |
5193 | ||
f378ab09 AM |
5194 | /* Return true if symbol is a strong function defined in an ELFv2 |
5195 | object with st_other localentry bits of zero, ie. its local entry | |
5196 | point coincides with its global entry point. */ | |
5197 | ||
5198 | static bfd_boolean | |
5199 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5200 | { | |
5201 | return (h != NULL | |
5202 | && h->type == STT_FUNC | |
5203 | && h->root.type == bfd_link_hash_defined | |
5204 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 5205 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
5206 | && is_ppc64_elf (h->root.u.def.section->owner) |
5207 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5208 | } | |
5209 | ||
854b41e7 AM |
5210 | /* Return true if symbol is defined in a regular object file. */ |
5211 | ||
5212 | static bfd_boolean | |
5213 | is_static_defined (struct elf_link_hash_entry *h) | |
5214 | { | |
5215 | return ((h->root.type == bfd_link_hash_defined | |
5216 | || h->root.type == bfd_link_hash_defweak) | |
5217 | && h->root.u.def.section != NULL | |
5218 | && h->root.u.def.section->output_section != NULL); | |
5219 | } | |
5220 | ||
b31867b6 AM |
5221 | /* If FDH is a function descriptor symbol, return the associated code |
5222 | entry symbol if it is defined. Return NULL otherwise. */ | |
5223 | ||
5224 | static struct ppc_link_hash_entry * | |
5225 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5226 | { | |
5227 | if (fdh->is_func_descriptor) | |
5228 | { | |
5229 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5230 | if (fh->elf.root.type == bfd_link_hash_defined | |
5231 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5232 | return fh; | |
5233 | } | |
5234 | return NULL; | |
5235 | } | |
5236 | ||
5237 | /* If FH is a function code entry symbol, return the associated | |
5238 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5239 | ||
5240 | static struct ppc_link_hash_entry * | |
5241 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5242 | { | |
5243 | if (fh->oh != NULL | |
5244 | && fh->oh->is_func_descriptor) | |
5245 | { | |
5246 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5247 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5248 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5249 | return fdh; | |
5250 | } | |
5251 | return NULL; | |
5252 | } | |
5253 | ||
8c5b4e52 AM |
5254 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5255 | ||
5256 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5257 | ||
5258 | static bfd_boolean | |
5259 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5260 | { | |
5261 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5262 | ||
5263 | if (htab != NULL && htab->need_func_desc_adj) | |
5264 | { | |
5265 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5266 | htab->need_func_desc_adj = 0; | |
5267 | } | |
5268 | return bfd_elf_gc_sections (abfd, info); | |
5269 | } | |
5270 | ||
74f0fb50 AM |
5271 | /* Mark all our entry sym sections, both opd and code section. */ |
5272 | ||
5273 | static void | |
5274 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5275 | { | |
5276 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5277 | struct bfd_sym_chain *sym; | |
5278 | ||
4dfe6ac6 NC |
5279 | if (htab == NULL) |
5280 | return; | |
5281 | ||
74f0fb50 AM |
5282 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5283 | { | |
b31867b6 | 5284 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5285 | asection *sec; |
5286 | ||
5287 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5288 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5289 | if (eh == NULL) |
5290 | continue; | |
5291 | if (eh->elf.root.type != bfd_link_hash_defined | |
5292 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5293 | continue; | |
5294 | ||
b31867b6 AM |
5295 | fh = defined_code_entry (eh); |
5296 | if (fh != NULL) | |
74f0fb50 | 5297 | { |
b31867b6 | 5298 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5299 | sec->flags |= SEC_KEEP; |
5300 | } | |
5301 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5302 | && opd_entry_value (eh->elf.root.u.def.section, | |
5303 | eh->elf.root.u.def.value, | |
aef36ac1 | 5304 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5305 | sec->flags |= SEC_KEEP; |
5306 | ||
5307 | sec = eh->elf.root.u.def.section; | |
5308 | sec->flags |= SEC_KEEP; | |
5309 | } | |
5310 | } | |
5311 | ||
64d03ab5 AM |
5312 | /* Mark sections containing dynamically referenced symbols. When |
5313 | building shared libraries, we must assume that any visible symbol is | |
5314 | referenced. */ | |
5315 | ||
5316 | static bfd_boolean | |
5317 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5318 | { | |
5319 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5320 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5321 | struct ppc_link_hash_entry *fdh; |
b407645f | 5322 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5323 | |
64d03ab5 | 5324 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5325 | fdh = defined_func_desc (eh); |
5326 | if (fdh != NULL) | |
5327 | eh = fdh; | |
64d03ab5 AM |
5328 | |
5329 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5330 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5331 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5332 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5333 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5334 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5335 | && (!bfd_link_executable (info) |
e278ae05 | 5336 | || info->gc_keep_exported |
b407645f AM |
5337 | || info->export_dynamic |
5338 | || (eh->elf.dynamic | |
5339 | && d != NULL | |
2cdcc330 AM |
5340 | && (*d->match) (&d->head, NULL, |
5341 | eh->elf.root.root.string))) | |
e278ae05 | 5342 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5343 | || !bfd_hide_sym_by_version (info->version_info, |
5344 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5345 | { |
5346 | asection *code_sec; | |
b31867b6 | 5347 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5348 | |
5349 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5350 | ||
5351 | /* Function descriptor syms cause the associated | |
5352 | function code sym section to be marked. */ | |
b31867b6 AM |
5353 | fh = defined_code_entry (eh); |
5354 | if (fh != NULL) | |
5355 | { | |
5356 | code_sec = fh->elf.root.u.def.section; | |
5357 | code_sec->flags |= SEC_KEEP; | |
5358 | } | |
64d03ab5 AM |
5359 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5360 | && opd_entry_value (eh->elf.root.u.def.section, | |
5361 | eh->elf.root.u.def.value, | |
aef36ac1 | 5362 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5363 | code_sec->flags |= SEC_KEEP; |
5364 | } | |
5365 | ||
5366 | return TRUE; | |
5367 | } | |
5368 | ||
5bd4f169 AM |
5369 | /* Return the section that should be marked against GC for a given |
5370 | relocation. */ | |
5371 | ||
5372 | static asection * | |
4ce794b7 | 5373 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5374 | struct bfd_link_info *info, |
4ce794b7 AM |
5375 | Elf_Internal_Rela *rel, |
5376 | struct elf_link_hash_entry *h, | |
5377 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5378 | { |
ccfa59ea AM |
5379 | asection *rsec; |
5380 | ||
ccfa59ea AM |
5381 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5382 | function sections, as all functions are referenced in .opd. */ | |
5383 | rsec = NULL; | |
5384 | if (get_opd_info (sec) != NULL) | |
5385 | return rsec; | |
1e2f5b6e | 5386 | |
5bd4f169 AM |
5387 | if (h != NULL) |
5388 | { | |
04c9666a | 5389 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5390 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5391 | |
4ce794b7 | 5392 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5393 | switch (r_type) |
5bd4f169 AM |
5394 | { |
5395 | case R_PPC64_GNU_VTINHERIT: | |
5396 | case R_PPC64_GNU_VTENTRY: | |
5397 | break; | |
5398 | ||
5399 | default: | |
5400 | switch (h->root.type) | |
5401 | { | |
5402 | case bfd_link_hash_defined: | |
5403 | case bfd_link_hash_defweak: | |
ccfa59ea | 5404 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5405 | fdh = defined_func_desc (eh); |
5406 | if (fdh != NULL) | |
8c5b4e52 AM |
5407 | { |
5408 | /* -mcall-aixdesc code references the dot-symbol on | |
5409 | a call reloc. Mark the function descriptor too | |
5410 | against garbage collection. */ | |
5411 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5412 | if (fdh->elf.is_weakalias) |
5413 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5414 | eh = fdh; |
5415 | } | |
1e2f5b6e AM |
5416 | |
5417 | /* Function descriptor syms cause the associated | |
5418 | function code sym section to be marked. */ | |
b31867b6 AM |
5419 | fh = defined_code_entry (eh); |
5420 | if (fh != NULL) | |
ccfa59ea AM |
5421 | { |
5422 | /* They also mark their opd section. */ | |
74f0fb50 | 5423 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5424 | |
b31867b6 | 5425 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5426 | } |
8387904d AM |
5427 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5428 | && opd_entry_value (eh->elf.root.u.def.section, | |
5429 | eh->elf.root.u.def.value, | |
aef36ac1 | 5430 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5431 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5432 | else |
1e2f5b6e AM |
5433 | rsec = h->root.u.def.section; |
5434 | break; | |
5bd4f169 AM |
5435 | |
5436 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5437 | rsec = h->root.u.c.p->section; |
5438 | break; | |
5bd4f169 AM |
5439 | |
5440 | default: | |
fb34365b | 5441 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5442 | } |
5443 | } | |
5444 | } | |
5445 | else | |
5446 | { | |
74f0fb50 | 5447 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5448 | |
5449 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5450 | opd = get_opd_info (rsec); |
5451 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5452 | { |
74f0fb50 | 5453 | rsec->gc_mark = 1; |
ccfa59ea | 5454 | |
51aecdc5 | 5455 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5456 | } |
5bd4f169 AM |
5457 | } |
5458 | ||
1e2f5b6e | 5459 | return rsec; |
5bd4f169 AM |
5460 | } |
5461 | ||
deb0e272 AM |
5462 | /* The maximum size of .sfpr. */ |
5463 | #define SFPR_MAX (218*4) | |
5464 | ||
5465 | struct sfpr_def_parms | |
5466 | { | |
699733f6 AM |
5467 | const char name[12]; |
5468 | unsigned char lo, hi; | |
2cdcc330 AM |
5469 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5470 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5471 | }; |
5472 | ||
a4b6fadd AM |
5473 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5474 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5475 | instead. */ | |
deb0e272 | 5476 | |
4dfe6ac6 | 5477 | static bfd_boolean |
a4b6fadd AM |
5478 | sfpr_define (struct bfd_link_info *info, |
5479 | const struct sfpr_def_parms *parm, | |
5480 | asection *stub_sec) | |
deb0e272 AM |
5481 | { |
5482 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5483 | unsigned int i; | |
5484 | size_t len = strlen (parm->name); | |
5485 | bfd_boolean writing = FALSE; | |
699733f6 | 5486 | char sym[16]; |
deb0e272 | 5487 | |
4dfe6ac6 NC |
5488 | if (htab == NULL) |
5489 | return FALSE; | |
5490 | ||
deb0e272 AM |
5491 | memcpy (sym, parm->name, len); |
5492 | sym[len + 2] = 0; | |
5493 | ||
5494 | for (i = parm->lo; i <= parm->hi; i++) | |
5495 | { | |
a4b6fadd | 5496 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5497 | |
5498 | sym[len + 0] = i / 10 + '0'; | |
5499 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 5500 | h = (struct ppc_link_hash_entry *) |
b32547cd | 5501 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 5502 | if (stub_sec != NULL) |
deb0e272 | 5503 | { |
a4b6fadd AM |
5504 | if (h != NULL |
5505 | && h->elf.root.type == bfd_link_hash_defined | |
5506 | && h->elf.root.u.def.section == htab->sfpr) | |
5507 | { | |
5508 | struct elf_link_hash_entry *s; | |
5509 | char buf[32]; | |
5510 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5511 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5512 | if (s == NULL) | |
5513 | return FALSE; | |
5514 | if (s->root.type == bfd_link_hash_new | |
5515 | || (s->root.type = bfd_link_hash_defined | |
5516 | && s->root.u.def.section == stub_sec)) | |
5517 | { | |
5518 | s->root.type = bfd_link_hash_defined; | |
5519 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5520 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5521 | + h->elf.root.u.def.value); |
5522 | s->ref_regular = 1; | |
5523 | s->def_regular = 1; | |
5524 | s->ref_regular_nonweak = 1; | |
5525 | s->forced_local = 1; | |
5526 | s->non_elf = 0; | |
5527 | s->root.linker_def = 1; | |
5528 | } | |
5529 | } | |
5530 | continue; | |
5531 | } | |
5532 | if (h != NULL) | |
5533 | { | |
5534 | h->save_res = 1; | |
5535 | if (!h->elf.def_regular) | |
deb0e272 | 5536 | { |
a4b6fadd AM |
5537 | h->elf.root.type = bfd_link_hash_defined; |
5538 | h->elf.root.u.def.section = htab->sfpr; | |
5539 | h->elf.root.u.def.value = htab->sfpr->size; | |
5540 | h->elf.type = STT_FUNC; | |
5541 | h->elf.def_regular = 1; | |
b32547cd | 5542 | h->elf.non_elf = 0; |
a4b6fadd AM |
5543 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5544 | writing = TRUE; | |
deb0e272 | 5545 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5546 | { |
2cdcc330 AM |
5547 | htab->sfpr->contents |
5548 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5549 | if (htab->sfpr->contents == NULL) |
5550 | return FALSE; | |
5551 | } | |
deb0e272 AM |
5552 | } |
5553 | } | |
5554 | if (writing) | |
5555 | { | |
5556 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5557 | if (i != parm->hi) | |
5558 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5559 | else | |
5560 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5561 | htab->sfpr->size = p - htab->sfpr->contents; | |
5562 | } | |
5563 | } | |
5564 | ||
5565 | return TRUE; | |
5566 | } | |
5567 | ||
5568 | static bfd_byte * | |
5569 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5570 | { | |
5571 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5572 | return p + 4; | |
5573 | } | |
5574 | ||
5575 | static bfd_byte * | |
5576 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5577 | { | |
5578 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5579 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5580 | p = p + 4; |
5581 | bfd_put_32 (abfd, BLR, p); | |
5582 | return p + 4; | |
5583 | } | |
5584 | ||
5585 | static bfd_byte * | |
5586 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5587 | { | |
5588 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5589 | return p + 4; | |
5590 | } | |
5591 | ||
5592 | static bfd_byte * | |
5593 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5594 | { | |
a078d95a | 5595 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5596 | p = p + 4; |
5597 | p = restgpr0 (abfd, p, r); | |
5598 | bfd_put_32 (abfd, MTLR_R0, p); | |
5599 | p = p + 4; | |
5600 | if (r == 29) | |
5601 | { | |
5602 | p = restgpr0 (abfd, p, 30); | |
5603 | p = restgpr0 (abfd, p, 31); | |
5604 | } | |
5605 | bfd_put_32 (abfd, BLR, p); | |
5606 | return p + 4; | |
5607 | } | |
5608 | ||
5609 | static bfd_byte * | |
5610 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5611 | { | |
5612 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5613 | return p + 4; | |
5614 | } | |
5615 | ||
5616 | static bfd_byte * | |
5617 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5618 | { | |
5619 | p = savegpr1 (abfd, p, r); | |
5620 | bfd_put_32 (abfd, BLR, p); | |
5621 | return p + 4; | |
5622 | } | |
5623 | ||
5624 | static bfd_byte * | |
5625 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5626 | { | |
5627 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5628 | return p + 4; | |
5629 | } | |
5630 | ||
5631 | static bfd_byte * | |
5632 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5633 | { | |
5634 | p = restgpr1 (abfd, p, r); | |
5635 | bfd_put_32 (abfd, BLR, p); | |
5636 | return p + 4; | |
5637 | } | |
5638 | ||
5639 | static bfd_byte * | |
5640 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5641 | { | |
5642 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5643 | return p + 4; | |
5644 | } | |
5645 | ||
5646 | static bfd_byte * | |
5647 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5648 | { | |
5649 | p = savefpr (abfd, p, r); | |
a078d95a | 5650 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5651 | p = p + 4; |
5652 | bfd_put_32 (abfd, BLR, p); | |
5653 | return p + 4; | |
5654 | } | |
5655 | ||
5656 | static bfd_byte * | |
5657 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5658 | { | |
5659 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5660 | return p + 4; | |
5661 | } | |
5662 | ||
5663 | static bfd_byte * | |
5664 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5665 | { | |
a078d95a | 5666 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5667 | p = p + 4; |
5668 | p = restfpr (abfd, p, r); | |
5669 | bfd_put_32 (abfd, MTLR_R0, p); | |
5670 | p = p + 4; | |
5671 | if (r == 29) | |
5672 | { | |
5673 | p = restfpr (abfd, p, 30); | |
5674 | p = restfpr (abfd, p, 31); | |
5675 | } | |
5676 | bfd_put_32 (abfd, BLR, p); | |
5677 | return p + 4; | |
5678 | } | |
5679 | ||
5680 | static bfd_byte * | |
5681 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5682 | { | |
5683 | p = savefpr (abfd, p, r); | |
5684 | bfd_put_32 (abfd, BLR, p); | |
5685 | return p + 4; | |
5686 | } | |
5687 | ||
5688 | static bfd_byte * | |
5689 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5690 | { | |
5691 | p = restfpr (abfd, p, r); | |
5692 | bfd_put_32 (abfd, BLR, p); | |
5693 | return p + 4; | |
5694 | } | |
5695 | ||
5696 | static bfd_byte * | |
5697 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5698 | { | |
5699 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5700 | p = p + 4; | |
5701 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5702 | return p + 4; | |
5703 | } | |
5704 | ||
5705 | static bfd_byte * | |
5706 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5707 | { | |
5708 | p = savevr (abfd, p, r); | |
5709 | bfd_put_32 (abfd, BLR, p); | |
5710 | return p + 4; | |
5711 | } | |
5712 | ||
5713 | static bfd_byte * | |
5714 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5715 | { | |
5716 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5717 | p = p + 4; | |
5718 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5719 | return p + 4; | |
5720 | } | |
5721 | ||
5722 | static bfd_byte * | |
5723 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5724 | { | |
5725 | p = restvr (abfd, p, r); | |
5726 | bfd_put_32 (abfd, BLR, p); | |
5727 | return p + 4; | |
5728 | } | |
5729 | ||
e86ce104 AM |
5730 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5731 | information on function code symbol entries to their corresponding | |
5732 | function descriptor symbol entries. */ | |
deb0e272 | 5733 | |
b34976b6 | 5734 | static bfd_boolean |
4ce794b7 | 5735 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5736 | { |
e86ce104 | 5737 | struct bfd_link_info *info; |
65f38f15 | 5738 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
5739 | struct ppc_link_hash_entry *fh; |
5740 | struct ppc_link_hash_entry *fdh; | |
5741 | bfd_boolean force_local; | |
5bd4f169 | 5742 | |
50bc7936 AM |
5743 | fh = (struct ppc_link_hash_entry *) h; |
5744 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5745 | return TRUE; |
e86ce104 | 5746 | |
8c5b4e52 AM |
5747 | if (!fh->is_func) |
5748 | return TRUE; | |
5749 | ||
5750 | if (fh->elf.root.root.string[0] != '.' | |
5751 | || fh->elf.root.root.string[1] == '\0') | |
5752 | return TRUE; | |
5753 | ||
4ce794b7 | 5754 | info = inf; |
65f38f15 | 5755 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5756 | if (htab == NULL) |
5757 | return FALSE; | |
5bd4f169 | 5758 | |
8c5b4e52 AM |
5759 | /* Find the corresponding function descriptor symbol. */ |
5760 | fdh = lookup_fdh (fh, htab); | |
5761 | ||
c09bdfe5 AM |
5762 | /* Resolve undefined references to dot-symbols as the value |
5763 | in the function descriptor, if we have one in a regular object. | |
5764 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5765 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
5766 | if ((fh->elf.root.type == bfd_link_hash_undefined |
5767 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
5768 | && (fdh->elf.root.type == bfd_link_hash_defined | |
5769 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
5770 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
5771 | && opd_entry_value (fdh->elf.root.u.def.section, | |
5772 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 5773 | &fh->elf.root.u.def.section, |
aef36ac1 | 5774 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 5775 | { |
b31867b6 | 5776 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 5777 | fh->elf.forced_local = 1; |
b31867b6 AM |
5778 | fh->elf.def_regular = fdh->elf.def_regular; |
5779 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
5780 | } |
5781 | ||
8c5b4e52 AM |
5782 | if (!fh->elf.dynamic) |
5783 | { | |
5784 | struct plt_entry *ent; | |
5bd4f169 | 5785 | |
8c5b4e52 AM |
5786 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
5787 | if (ent->plt.refcount > 0) | |
5788 | break; | |
5789 | if (ent == NULL) | |
5790 | return TRUE; | |
5791 | } | |
5bd4f169 | 5792 | |
8c5b4e52 | 5793 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 5794 | if (fdh == NULL |
0e1862bb | 5795 | && !bfd_link_executable (info) |
50bc7936 AM |
5796 | && (fh->elf.root.type == bfd_link_hash_undefined |
5797 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5798 | { | |
908b32fc | 5799 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5800 | if (fdh == NULL) |
5801 | return FALSE; | |
50bc7936 | 5802 | } |
648cca2c | 5803 | |
8c5b4e52 | 5804 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
5805 | if (fdh != NULL |
5806 | && fdh->fake | |
8c5b4e52 AM |
5807 | && (fh->elf.root.type == bfd_link_hash_defined |
5808 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
5809 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 5810 | |
8c5b4e52 AM |
5811 | /* Transfer dynamic linking information to the function descriptor. */ |
5812 | if (fdh != NULL) | |
5813 | { | |
f5385ebf AM |
5814 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5815 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5816 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5817 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
5818 | fdh->elf.dynamic |= fh->elf.dynamic; |
5819 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
5820 | || fh->elf.type == STT_FUNC | |
5821 | || fh->elf.type == STT_GNU_IFUNC); | |
5822 | move_plt_plist (fh, fdh); | |
5823 | ||
5824 | if (!fdh->elf.forced_local | |
5825 | && fh->elf.dynindx != -1) | |
5826 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
5827 | return FALSE; | |
e86ce104 AM |
5828 | } |
5829 | ||
50bc7936 AM |
5830 | /* Now that the info is on the function descriptor, clear the |
5831 | function code sym info. Any function code syms for which we | |
5832 | don't have a definition in a regular file, we force local. | |
5833 | This prevents a shared library from exporting syms that have | |
5834 | been imported from another library. Function code syms that | |
5835 | are really in the library we must leave global to prevent the | |
5836 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5837 | force_local = (!fh->elf.def_regular |
5838 | || fdh == NULL | |
5839 | || !fdh->elf.def_regular | |
5840 | || fdh->elf.forced_local); | |
50bc7936 AM |
5841 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5842 | ||
b34976b6 | 5843 | return TRUE; |
e86ce104 | 5844 | } |
40b8271b | 5845 | |
a4b6fadd AM |
5846 | static const struct sfpr_def_parms save_res_funcs[] = |
5847 | { | |
5848 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5849 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5850 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5851 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5852 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5853 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5854 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5855 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5856 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5857 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5858 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5859 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5860 | }; | |
5861 | ||
e86ce104 | 5862 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5863 | this hook to a) provide some gcc support functions, and b) transfer |
5864 | dynamic linking information gathered so far on function code symbol | |
5865 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5866 | |
b34976b6 | 5867 | static bfd_boolean |
4ce794b7 AM |
5868 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5869 | struct bfd_link_info *info) | |
e86ce104 AM |
5870 | { |
5871 | struct ppc_link_hash_table *htab; | |
5872 | ||
5873 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
5874 | if (htab == NULL) |
5875 | return FALSE; | |
5876 | ||
b32547cd AM |
5877 | /* Provide any missing _save* and _rest* functions. */ |
5878 | if (htab->sfpr != NULL) | |
5879 | { | |
5880 | unsigned int i; | |
5881 | ||
5882 | htab->sfpr->size = 0; | |
5883 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
5884 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
5885 | return FALSE; | |
5886 | if (htab->sfpr->size == 0) | |
5887 | htab->sfpr->flags |= SEC_EXCLUDE; | |
5888 | } | |
5889 | ||
5890 | if (bfd_link_relocatable (info)) | |
5891 | return TRUE; | |
5892 | ||
5893 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
5894 | { |
5895 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
5896 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
5897 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
5898 | if (!htab->elf.hgot->def_regular |
5899 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
5900 | { | |
5901 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
5902 | htab->elf.hgot->root.u.def.value = 0; | |
5903 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
5904 | htab->elf.hgot->def_regular = 1; | |
5905 | htab->elf.hgot->root.linker_def = 1; | |
5906 | } | |
dba6fa9b | 5907 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
5908 | htab->elf.hgot->other |
5909 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 5910 | } |
c66bb0ee | 5911 | |
8c5b4e52 AM |
5912 | if (htab->need_func_desc_adj) |
5913 | { | |
5914 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5915 | htab->need_func_desc_adj = 0; | |
5916 | } | |
805fc799 | 5917 | |
b34976b6 | 5918 | return TRUE; |
e86ce104 AM |
5919 | } |
5920 | ||
98bbb1b8 | 5921 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 5922 | |
98bbb1b8 | 5923 | static asection * |
a345bc8d AM |
5924 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
5925 | { | |
5926 | struct ppc_link_hash_entry *eh; | |
5927 | struct elf_dyn_relocs *p; | |
5928 | ||
5929 | eh = (struct ppc_link_hash_entry *) h; | |
5930 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5931 | { | |
5932 | asection *s = p->sec->output_section; | |
5933 | ||
5934 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 5935 | return p->sec; |
a345bc8d | 5936 | } |
98bbb1b8 | 5937 | return NULL; |
a345bc8d AM |
5938 | } |
5939 | ||
d311bc8b | 5940 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
5941 | aliases, that apply to read-only sections. Cannot be used after |
5942 | size_dynamic_sections. */ | |
d311bc8b AM |
5943 | |
5944 | static bfd_boolean | |
5945 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
5946 | { | |
5947 | struct ppc_link_hash_entry *eh; | |
5948 | ||
5949 | eh = (struct ppc_link_hash_entry *) h; | |
5950 | do | |
5951 | { | |
5952 | if (readonly_dynrelocs (&eh->elf)) | |
5953 | return TRUE; | |
ab2477e1 | 5954 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
2cdcc330 AM |
5955 | } |
5956 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
5957 | |
5958 | return FALSE; | |
5959 | } | |
8a2058b5 | 5960 | |
8a9e8e72 AM |
5961 | /* Return whether EH has pc-relative dynamic relocs. */ |
5962 | ||
5963 | static bfd_boolean | |
5964 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
5965 | { | |
5966 | struct elf_dyn_relocs *p; | |
5967 | ||
5968 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5969 | if (p->pc_count != 0) | |
5970 | return TRUE; | |
5971 | return FALSE; | |
5972 | } | |
5973 | ||
8a2058b5 AM |
5974 | /* Return true if a global entry stub will be created for H. Valid |
5975 | for ELFv2 before plt entries have been allocated. */ | |
5976 | ||
5977 | static bfd_boolean | |
5978 | global_entry_stub (struct elf_link_hash_entry *h) | |
5979 | { | |
5980 | struct plt_entry *pent; | |
5981 | ||
5982 | if (!h->pointer_equality_needed | |
5983 | || h->def_regular) | |
5984 | return FALSE; | |
5985 | ||
5986 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
5987 | if (pent->plt.refcount > 0 | |
5988 | && pent->addend == 0) | |
5989 | return TRUE; | |
5990 | ||
5991 | return FALSE; | |
5992 | } | |
5993 | ||
e86ce104 AM |
5994 | /* Adjust a symbol defined by a dynamic object and referenced by a |
5995 | regular object. The current definition is in some section of the | |
5996 | dynamic object, but we're not including those sections. We have to | |
5997 | change the definition to something the rest of the link can | |
5998 | understand. */ | |
5999 | ||
b34976b6 | 6000 | static bfd_boolean |
4ce794b7 AM |
6001 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6002 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6003 | { |
6004 | struct ppc_link_hash_table *htab; | |
5474d94f | 6005 | asection *s, *srel; |
e86ce104 AM |
6006 | |
6007 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6008 | if (htab == NULL) |
6009 | return FALSE; | |
e86ce104 AM |
6010 | |
6011 | /* Deal with function syms. */ | |
6012 | if (h->type == STT_FUNC | |
e054468f | 6013 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6014 | || h->needs_plt) |
e86ce104 | 6015 | { |
529fe20e AM |
6016 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
6017 | || SYMBOL_CALLS_LOCAL (info, h) | |
6018 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6019 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6020 | function symbol is local and not an ifunc. We keep dynamic | |
6021 | relocs for ifuncs when local rather than always emitting a | |
6022 | plt call stub for them and defining the symbol on the call | |
6023 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6024 | is defined on a descriptor, not code) and it can be faster at | |
6025 | run-time due to not needing to bounce through a stub. The | |
6026 | dyn_relocs for ifuncs will be applied even in a static | |
6027 | executable. */ | |
6028 | if (!bfd_link_pic (info) | |
6029 | && h->type != STT_GNU_IFUNC | |
6030 | && local) | |
6031 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6032 | ||
e86ce104 AM |
6033 | /* Clear procedure linkage table information for any symbol that |
6034 | won't need a .plt entry. */ | |
411e1bfb AM |
6035 | struct plt_entry *ent; |
6036 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6037 | if (ent->plt.refcount > 0) | |
6038 | break; | |
8387904d | 6039 | if (ent == NULL |
2d7ad24e AM |
6040 | || (h->type != STT_GNU_IFUNC |
6041 | && local | |
3e04d765 AM |
6042 | && (htab->can_convert_all_inline_plt |
6043 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
6044 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 6045 | { |
411e1bfb | 6046 | h->plt.plist = NULL; |
f5385ebf | 6047 | h->needs_plt = 0; |
d1eca1e4 | 6048 | h->pointer_equality_needed = 0; |
40b8271b | 6049 | } |
8a2058b5 | 6050 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6051 | { |
d1eca1e4 AM |
6052 | /* Taking a function's address in a read/write section |
6053 | doesn't require us to define the function symbol in the | |
6054 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6055 | be used instead. The reason we prefer a few more dynamic |
6056 | relocs is that calling via a global entry stub costs a | |
6057 | few more instructions, and pointer_equality_needed causes | |
6058 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6059 | if (global_entry_stub (h)) |
d1eca1e4 | 6060 | { |
ab2477e1 | 6061 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
6062 | { |
6063 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6064 | /* If we haven't seen a branch reloc and the symbol |
6065 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6066 | if (!h->needs_plt) |
6067 | h->plt.plist = NULL; | |
6068 | } | |
6069 | else if (!bfd_link_pic (info)) | |
6070 | /* We are going to be defining the function symbol on the | |
6071 | plt stub, so no dyn_relocs needed when non-pic. */ | |
6072 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
6073 | } |
6074 | ||
3988aed5 AM |
6075 | /* ELFv2 function symbols can't have copy relocs. */ |
6076 | return TRUE; | |
6077 | } | |
6078 | else if (!h->needs_plt | |
ab2477e1 | 6079 | && !readonly_dynrelocs (h)) |
3988aed5 | 6080 | { |
04383fd1 AM |
6081 | /* If we haven't seen a branch reloc and the symbol isn't an |
6082 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6083 | h->plt.plist = NULL; |
6084 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6085 | return TRUE; |
6086 | } | |
5bd4f169 | 6087 | } |
bbd7ec4a | 6088 | else |
411e1bfb | 6089 | h->plt.plist = NULL; |
5bd4f169 AM |
6090 | |
6091 | /* If this is a weak symbol, and there is a real definition, the | |
6092 | processor independent code will have arranged for us to see the | |
6093 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6094 | if (h->is_weakalias) |
5bd4f169 | 6095 | { |
60d67dc8 AM |
6096 | struct elf_link_hash_entry *def = weakdef (h); |
6097 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6098 | h->root.u.def.section = def->root.u.def.section; | |
6099 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6100 | if (def->root.u.def.section == htab->elf.sdynbss |
6101 | || def->root.u.def.section == htab->elf.sdynrelro) | |
6102 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 6103 | return TRUE; |
5bd4f169 AM |
6104 | } |
6105 | ||
5bd4f169 AM |
6106 | /* If we are creating a shared library, we must presume that the |
6107 | only references to the symbol are via the global offset table. | |
6108 | For such cases we need not do anything here; the relocations will | |
6109 | be handled correctly by relocate_section. */ | |
0e1862bb | 6110 | if (bfd_link_pic (info)) |
b34976b6 | 6111 | return TRUE; |
5bd4f169 | 6112 | |
65f38f15 AM |
6113 | /* If there are no references to this symbol that do not use the |
6114 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6115 | if (!h->non_got_ref) |
b34976b6 | 6116 | return TRUE; |
65f38f15 | 6117 | |
b186458a | 6118 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6119 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6120 | |
d93d1c80 AM |
6121 | /* If -z nocopyreloc was given, don't generate them either. */ |
6122 | || info->nocopyreloc | |
a127494f | 6123 | |
dce2246a | 6124 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6125 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 6126 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 6127 | |
d93d1c80 AM |
6128 | /* Protected variables do not work with .dynbss. The copy in |
6129 | .dynbss won't be used by the shared library with the protected | |
6130 | definition for the variable. Text relocations are preferable | |
6131 | to an incorrect program. */ | |
6132 | || h->protected_def) | |
529fe20e | 6133 | return TRUE; |
a127494f | 6134 | |
5d35169e | 6135 | if (h->plt.plist != NULL) |
97b639ba AM |
6136 | { |
6137 | /* We should never get here, but unfortunately there are versions | |
6138 | of gcc out there that improperly (for this ABI) put initialized | |
6139 | function pointers, vtable refs and suchlike in read-only | |
6140 | sections. Allow them to proceed, but warn that this might | |
6141 | break at runtime. */ | |
25f53a85 | 6142 | info->callbacks->einfo |
c1c8c1ef | 6143 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6144 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6145 | h->root.root.string); |
6146 | } | |
5d35169e AM |
6147 | |
6148 | /* This is a reference to a symbol defined by a dynamic object which | |
6149 | is not a function. */ | |
6150 | ||
5bd4f169 AM |
6151 | /* We must allocate the symbol in our .dynbss section, which will |
6152 | become part of the .bss section of the executable. There will be | |
6153 | an entry for this symbol in the .dynsym section. The dynamic | |
6154 | object will contain position independent code, so all references | |
6155 | from the dynamic object to this symbol will go through the global | |
6156 | offset table. The dynamic linker will use the .dynsym entry to | |
6157 | determine the address it must put in the global offset table, so | |
6158 | both the dynamic object and the regular object will refer to the | |
6159 | same memory location for the variable. */ | |
5474d94f AM |
6160 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6161 | { | |
6162 | s = htab->elf.sdynrelro; | |
6163 | srel = htab->elf.sreldynrelro; | |
6164 | } | |
6165 | else | |
6166 | { | |
6167 | s = htab->elf.sdynbss; | |
6168 | srel = htab->elf.srelbss; | |
6169 | } | |
1d7e9d18 | 6170 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6171 | { |
4a7e5234 AM |
6172 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6173 | linker to copy the initial value out of the dynamic object | |
6174 | and into the runtime process image. */ | |
5474d94f | 6175 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6176 | h->needs_copy = 1; |
5bd4f169 AM |
6177 | } |
6178 | ||
529fe20e AM |
6179 | /* We no longer want dyn_relocs. */ |
6180 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 6181 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6182 | } |
6183 | ||
e86ce104 AM |
6184 | /* If given a function descriptor symbol, hide both the function code |
6185 | sym and the descriptor. */ | |
6186 | static void | |
4ce794b7 AM |
6187 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6188 | struct elf_link_hash_entry *h, | |
6189 | bfd_boolean force_local) | |
e86ce104 | 6190 | { |
34814b9f | 6191 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6192 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6193 | ||
87469ba2 AM |
6194 | if (ppc_hash_table (info) == NULL) |
6195 | return; | |
6196 | ||
34814b9f AM |
6197 | eh = (struct ppc_link_hash_entry *) h; |
6198 | if (eh->is_func_descriptor) | |
e86ce104 | 6199 | { |
34814b9f | 6200 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6201 | |
721956f4 | 6202 | if (fh == NULL) |
d1329ca3 AM |
6203 | { |
6204 | const char *p, *q; | |
b8ac2841 | 6205 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6206 | char save; |
6207 | ||
6208 | /* We aren't supposed to use alloca in BFD because on | |
6209 | systems which do not have alloca the version in libiberty | |
6210 | calls xmalloc, which might cause the program to crash | |
6211 | when it runs out of memory. This function doesn't have a | |
6212 | return status, so there's no way to gracefully return an | |
6213 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6214 | accessed; It's either a string in an ELF string table, |
6215 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6216 | |
34814b9f | 6217 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6218 | save = *p; |
6219 | *(char *) p = '.'; | |
34814b9f | 6220 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 6221 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6222 | *(char *) p = save; |
6223 | ||
6224 | /* Unfortunately, if it so happens that the string we were | |
6225 | looking for was allocated immediately before this string, | |
6226 | then we overwrote the string terminator. That's the only | |
6227 | reason the lookup should fail. */ | |
6228 | if (fh == NULL) | |
6229 | { | |
34814b9f AM |
6230 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6231 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6232 | --q, --p; |
34814b9f AM |
6233 | if (q < eh->elf.root.root.string && *p == '.') |
6234 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 6235 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6236 | } |
6237 | if (fh != NULL) | |
6238 | { | |
34814b9f AM |
6239 | eh->oh = fh; |
6240 | fh->oh = eh; | |
d1329ca3 AM |
6241 | } |
6242 | } | |
e86ce104 | 6243 | if (fh != NULL) |
34814b9f | 6244 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6245 | } |
6246 | } | |
6247 | ||
411e1bfb | 6248 | static bfd_boolean |
8843416a AM |
6249 | get_sym_h (struct elf_link_hash_entry **hp, |
6250 | Elf_Internal_Sym **symp, | |
6251 | asection **symsecp, | |
f961d9dd | 6252 | unsigned char **tls_maskp, |
8843416a AM |
6253 | Elf_Internal_Sym **locsymsp, |
6254 | unsigned long r_symndx, | |
6255 | bfd *ibfd) | |
411e1bfb | 6256 | { |
0ffa91dd | 6257 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6258 | |
6259 | if (r_symndx >= symtab_hdr->sh_info) | |
6260 | { | |
6261 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6262 | struct elf_link_hash_entry *h; | |
6263 | ||
6264 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6265 | h = elf_follow_link (h); |
411e1bfb AM |
6266 | |
6267 | if (hp != NULL) | |
6268 | *hp = h; | |
6269 | ||
6270 | if (symp != NULL) | |
6271 | *symp = NULL; | |
6272 | ||
6273 | if (symsecp != NULL) | |
6274 | { | |
6275 | asection *symsec = NULL; | |
6276 | if (h->root.type == bfd_link_hash_defined | |
6277 | || h->root.type == bfd_link_hash_defweak) | |
6278 | symsec = h->root.u.def.section; | |
6279 | *symsecp = symsec; | |
6280 | } | |
6281 | ||
e7b938ca | 6282 | if (tls_maskp != NULL) |
411e1bfb AM |
6283 | { |
6284 | struct ppc_link_hash_entry *eh; | |
6285 | ||
6286 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6287 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6288 | } |
6289 | } | |
6290 | else | |
6291 | { | |
6292 | Elf_Internal_Sym *sym; | |
6293 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6294 | ||
6295 | if (locsyms == NULL) | |
6296 | { | |
6297 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6298 | if (locsyms == NULL) | |
6299 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6300 | symtab_hdr->sh_info, | |
6301 | 0, NULL, NULL, NULL); | |
6302 | if (locsyms == NULL) | |
6303 | return FALSE; | |
6304 | *locsymsp = locsyms; | |
6305 | } | |
6306 | sym = locsyms + r_symndx; | |
6307 | ||
6308 | if (hp != NULL) | |
6309 | *hp = NULL; | |
6310 | ||
6311 | if (symp != NULL) | |
6312 | *symp = sym; | |
6313 | ||
6314 | if (symsecp != NULL) | |
cb33740c | 6315 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6316 | |
e7b938ca | 6317 | if (tls_maskp != NULL) |
411e1bfb AM |
6318 | { |
6319 | struct got_entry **lgot_ents; | |
f961d9dd | 6320 | unsigned char *tls_mask; |
411e1bfb | 6321 | |
e7b938ca | 6322 | tls_mask = NULL; |
411e1bfb AM |
6323 | lgot_ents = elf_local_got_ents (ibfd); |
6324 | if (lgot_ents != NULL) | |
6325 | { | |
e054468f AM |
6326 | struct plt_entry **local_plt = (struct plt_entry **) |
6327 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6328 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6329 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6330 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6331 | } |
e7b938ca | 6332 | *tls_maskp = tls_mask; |
411e1bfb AM |
6333 | } |
6334 | } | |
6335 | return TRUE; | |
6336 | } | |
6337 | ||
e7b938ca | 6338 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6339 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6340 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6341 | |
6342 | static int | |
f961d9dd | 6343 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6344 | unsigned long *toc_symndx, |
6345 | bfd_vma *toc_addend, | |
0d4792f7 | 6346 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6347 | const Elf_Internal_Rela *rel, |
6348 | bfd *ibfd) | |
411e1bfb AM |
6349 | { |
6350 | unsigned long r_symndx; | |
0d4792f7 | 6351 | int next_r; |
411e1bfb AM |
6352 | struct elf_link_hash_entry *h; |
6353 | Elf_Internal_Sym *sym; | |
6354 | asection *sec; | |
6355 | bfd_vma off; | |
6356 | ||
6357 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6358 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6359 | return 0; |
411e1bfb | 6360 | |
37da22e5 AM |
6361 | if ((*tls_maskp != NULL |
6362 | && (**tls_maskp & TLS_TLS) != 0 | |
6363 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6364 | || sec == NULL |
6bee8834 | 6365 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6366 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6367 | return 1; |
411e1bfb AM |
6368 | |
6369 | /* Look inside a TOC section too. */ | |
6370 | if (h != NULL) | |
6371 | { | |
6372 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6373 | off = h->root.u.def.value; | |
6374 | } | |
6375 | else | |
6376 | off = sym->st_value; | |
6377 | off += rel->r_addend; | |
6378 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6379 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6380 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6381 | if (toc_symndx != NULL) |
6382 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6383 | if (toc_addend != NULL) |
6384 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6385 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6386 | return 0; | |
854b41e7 | 6387 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6388 | && (next_r == -1 || next_r == -2)) |
6389 | return 1 - next_r; | |
951fd09b | 6390 | return 1; |
411e1bfb AM |
6391 | } |
6392 | ||
3b421ab3 AM |
6393 | /* Find (or create) an entry in the tocsave hash table. */ |
6394 | ||
6395 | static struct tocsave_entry * | |
6396 | tocsave_find (struct ppc_link_hash_table *htab, | |
6397 | enum insert_option insert, | |
6398 | Elf_Internal_Sym **local_syms, | |
6399 | const Elf_Internal_Rela *irela, | |
6400 | bfd *ibfd) | |
6401 | { | |
6402 | unsigned long r_indx; | |
6403 | struct elf_link_hash_entry *h; | |
6404 | Elf_Internal_Sym *sym; | |
6405 | struct tocsave_entry ent, *p; | |
6406 | hashval_t hash; | |
6407 | struct tocsave_entry **slot; | |
6408 | ||
6409 | r_indx = ELF64_R_SYM (irela->r_info); | |
6410 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6411 | return NULL; | |
6412 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6413 | { | |
4eca0228 | 6414 | _bfd_error_handler |
871b3ab2 | 6415 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6416 | return NULL; |
6417 | } | |
6418 | ||
6419 | if (h != NULL) | |
6420 | ent.offset = h->root.u.def.value; | |
6421 | else | |
6422 | ent.offset = sym->st_value; | |
6423 | ent.offset += irela->r_addend; | |
6424 | ||
6425 | hash = tocsave_htab_hash (&ent); | |
6426 | slot = ((struct tocsave_entry **) | |
6427 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6428 | if (slot == NULL) | |
6429 | return NULL; | |
6430 | ||
6431 | if (*slot == NULL) | |
6432 | { | |
6433 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6434 | if (p == NULL) | |
6435 | return NULL; | |
6436 | *p = ent; | |
6437 | *slot = p; | |
6438 | } | |
6439 | return *slot; | |
6440 | } | |
6441 | ||
754021d0 | 6442 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6443 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6444 | |
6445 | static bfd_boolean | |
6446 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6447 | { | |
6448 | struct ppc_link_hash_entry *eh; | |
6449 | asection *sym_sec; | |
74f0fb50 | 6450 | struct _opd_sec_data *opd; |
754021d0 AM |
6451 | |
6452 | if (h->root.type == bfd_link_hash_indirect) | |
6453 | return TRUE; | |
6454 | ||
754021d0 AM |
6455 | if (h->root.type != bfd_link_hash_defined |
6456 | && h->root.type != bfd_link_hash_defweak) | |
6457 | return TRUE; | |
6458 | ||
6459 | eh = (struct ppc_link_hash_entry *) h; | |
6460 | if (eh->adjust_done) | |
6461 | return TRUE; | |
6462 | ||
6463 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6464 | opd = get_opd_info (sym_sec); |
6465 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6466 | { |
51aecdc5 | 6467 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6468 | if (adjust == -1) |
6469 | { | |
6470 | /* This entry has been deleted. */ | |
b3fac117 | 6471 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6472 | if (dsec == NULL) |
6473 | { | |
6474 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6475 | if (discarded_section (dsec)) |
81688140 | 6476 | { |
b3fac117 | 6477 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6478 | break; |
6479 | } | |
6480 | } | |
4025353c | 6481 | eh->elf.root.u.def.value = 0; |
81688140 | 6482 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6483 | } |
6484 | else | |
6485 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6486 | eh->adjust_done = 1; |
6487 | } | |
6488 | return TRUE; | |
6489 | } | |
6490 | ||
8c1d1bb8 | 6491 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6492 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6493 | have already been determined. */ |
6494 | ||
6495 | static bfd_boolean | |
6496 | dec_dynrel_count (bfd_vma r_info, | |
6497 | asection *sec, | |
6498 | struct bfd_link_info *info, | |
6499 | Elf_Internal_Sym **local_syms, | |
6500 | struct elf_link_hash_entry *h, | |
19e08130 | 6501 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6502 | { |
6503 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6504 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6505 | |
6506 | /* Can this reloc be dynamic? This switch, and later tests here | |
6507 | should be kept in sync with the code in check_relocs. */ | |
6508 | r_type = ELF64_R_TYPE (r_info); | |
6509 | switch (r_type) | |
6510 | { | |
6511 | default: | |
6512 | return TRUE; | |
6513 | ||
6514 | case R_PPC64_TPREL16: | |
6515 | case R_PPC64_TPREL16_LO: | |
6516 | case R_PPC64_TPREL16_HI: | |
6517 | case R_PPC64_TPREL16_HA: | |
6518 | case R_PPC64_TPREL16_DS: | |
6519 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6520 | case R_PPC64_TPREL16_HIGH: |
6521 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
6522 | case R_PPC64_TPREL16_HIGHER: |
6523 | case R_PPC64_TPREL16_HIGHERA: | |
6524 | case R_PPC64_TPREL16_HIGHEST: | |
6525 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
6526 | case R_PPC64_TPREL64: |
6527 | case R_PPC64_DTPMOD64: | |
6528 | case R_PPC64_DTPREL64: | |
6529 | case R_PPC64_ADDR64: | |
6530 | case R_PPC64_REL30: | |
6531 | case R_PPC64_REL32: | |
6532 | case R_PPC64_REL64: | |
6533 | case R_PPC64_ADDR14: | |
6534 | case R_PPC64_ADDR14_BRNTAKEN: | |
6535 | case R_PPC64_ADDR14_BRTAKEN: | |
6536 | case R_PPC64_ADDR16: | |
6537 | case R_PPC64_ADDR16_DS: | |
6538 | case R_PPC64_ADDR16_HA: | |
6539 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
6540 | case R_PPC64_ADDR16_HIGH: |
6541 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
6542 | case R_PPC64_ADDR16_HIGHER: |
6543 | case R_PPC64_ADDR16_HIGHERA: | |
6544 | case R_PPC64_ADDR16_HIGHEST: | |
6545 | case R_PPC64_ADDR16_HIGHESTA: | |
6546 | case R_PPC64_ADDR16_LO: | |
6547 | case R_PPC64_ADDR16_LO_DS: | |
6548 | case R_PPC64_ADDR24: | |
6549 | case R_PPC64_ADDR32: | |
6550 | case R_PPC64_UADDR16: | |
6551 | case R_PPC64_UADDR32: | |
6552 | case R_PPC64_UADDR64: | |
6553 | case R_PPC64_TOC: | |
6554 | break; | |
6555 | } | |
6556 | ||
6557 | if (local_syms != NULL) | |
6558 | { | |
6559 | unsigned long r_symndx; | |
8c1d1bb8 AM |
6560 | bfd *ibfd = sec->owner; |
6561 | ||
6562 | r_symndx = ELF64_R_SYM (r_info); | |
6563 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6564 | return FALSE; | |
6565 | } | |
6566 | ||
0e1862bb | 6567 | if ((bfd_link_pic (info) |
1d483afe | 6568 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 6569 | || (h != NULL |
198f1157 | 6570 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
6571 | || h->root.type == bfd_link_hash_defweak |
6572 | || !h->def_regular)))) | |
6573 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 6574 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
6575 | && h != NULL |
6576 | && (h->root.type == bfd_link_hash_defweak | |
6577 | || !h->def_regular))) | |
6578 | ; | |
6579 | else | |
6580 | return TRUE; | |
6581 | ||
6582 | if (h != NULL) | |
6edfbbad | 6583 | { |
19e08130 AM |
6584 | struct elf_dyn_relocs *p; |
6585 | struct elf_dyn_relocs **pp; | |
6586 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6587 | ||
6588 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6589 | with local syms for a given section. Also, symbol flags are | |
6590 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
6591 | report a dynreloc miscount. */ | |
6592 | if (*pp == NULL && info->gc_sections) | |
6593 | return TRUE; | |
6594 | ||
6595 | while ((p = *pp) != NULL) | |
60124e18 | 6596 | { |
19e08130 AM |
6597 | if (p->sec == sec) |
6598 | { | |
6599 | if (!must_be_dyn_reloc (info, r_type)) | |
6600 | p->pc_count -= 1; | |
6601 | p->count -= 1; | |
6602 | if (p->count == 0) | |
6603 | *pp = p->next; | |
6604 | return TRUE; | |
6605 | } | |
6606 | pp = &p->next; | |
60124e18 | 6607 | } |
6edfbbad | 6608 | } |
19e08130 AM |
6609 | else |
6610 | { | |
6611 | struct ppc_dyn_relocs *p; | |
6612 | struct ppc_dyn_relocs **pp; | |
6613 | void *vpp; | |
6614 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 6615 | |
19e08130 AM |
6616 | if (local_syms == NULL) |
6617 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
6618 | if (sym_sec == NULL) | |
6619 | sym_sec = sec; | |
c57da1a7 | 6620 | |
19e08130 AM |
6621 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
6622 | pp = (struct ppc_dyn_relocs **) vpp; | |
6623 | ||
6624 | if (*pp == NULL && info->gc_sections) | |
6625 | return TRUE; | |
6626 | ||
6627 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
6628 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 6629 | { |
19e08130 AM |
6630 | if (p->sec == sec && p->ifunc == is_ifunc) |
6631 | { | |
6632 | p->count -= 1; | |
6633 | if (p->count == 0) | |
6634 | *pp = p->next; | |
6635 | return TRUE; | |
6636 | } | |
6637 | pp = &p->next; | |
8c1d1bb8 | 6638 | } |
8c1d1bb8 AM |
6639 | } |
6640 | ||
695344c0 | 6641 | /* xgettext:c-format */ |
cf97bcb0 AM |
6642 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
6643 | sec->owner, sec); | |
8c1d1bb8 AM |
6644 | bfd_set_error (bfd_error_bad_value); |
6645 | return FALSE; | |
6646 | } | |
6647 | ||
754021d0 AM |
6648 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6649 | only remove those associated with functions in discarded link-once | |
6650 | sections, or weakly defined functions that have been overridden. It | |
6651 | would be possible to remove many more entries for statically linked | |
6652 | applications. */ | |
6653 | ||
b34976b6 | 6654 | bfd_boolean |
e7d1c40c | 6655 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
6656 | { |
6657 | bfd *ibfd; | |
754021d0 | 6658 | bfd_boolean some_edited = FALSE; |
3f764659 | 6659 | asection *need_pad = NULL; |
e7d1c40c AM |
6660 | struct ppc_link_hash_table *htab; |
6661 | ||
6662 | htab = ppc_hash_table (info); | |
6663 | if (htab == NULL) | |
6664 | return FALSE; | |
1e2f5b6e | 6665 | |
c72f2fb2 | 6666 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
6667 | { |
6668 | asection *sec; | |
6669 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6670 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6671 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 6672 | struct _opd_sec_data *opd; |
51aecdc5 | 6673 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 6674 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 6675 | |
854b41e7 AM |
6676 | if (!is_ppc64_elf (ibfd)) |
6677 | continue; | |
6678 | ||
1e2f5b6e | 6679 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 6680 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6681 | continue; |
6682 | ||
dbaa2011 | 6683 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
6684 | continue; |
6685 | ||
1e2f5b6e AM |
6686 | if (sec->output_section == bfd_abs_section_ptr) |
6687 | continue; | |
6688 | ||
6689 | /* Look through the section relocs. */ | |
6690 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6691 | continue; | |
6692 | ||
6cdc0ccc | 6693 | local_syms = NULL; |
0ffa91dd | 6694 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6695 | |
6696 | /* Read the relocations. */ | |
4ce794b7 | 6697 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6698 | info->keep_memory); |
1e2f5b6e | 6699 | if (relstart == NULL) |
b34976b6 | 6700 | return FALSE; |
1e2f5b6e AM |
6701 | |
6702 | /* First run through the relocs to check they are sane, and to | |
6703 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6704 | need_edit = FALSE; |
51aecdc5 | 6705 | broken = FALSE; |
3f764659 | 6706 | need_pad = sec; |
1e2f5b6e | 6707 | relend = relstart + sec->reloc_count; |
50bc7936 | 6708 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6709 | { |
04c9666a | 6710 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6711 | unsigned long r_symndx; |
6712 | asection *sym_sec; | |
6713 | struct elf_link_hash_entry *h; | |
6714 | Elf_Internal_Sym *sym; | |
51aecdc5 | 6715 | bfd_vma offset; |
1e2f5b6e | 6716 | |
51aecdc5 | 6717 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6718 | only interested in the reloc pointing to a function entry |
6719 | point. */ | |
51aecdc5 AM |
6720 | offset = rel->r_offset; |
6721 | if (rel + 1 == relend | |
6722 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
6723 | { |
6724 | /* If someone messes with .opd alignment then after a | |
6725 | "ld -r" we might have padding in the middle of .opd. | |
6726 | Also, there's nothing to prevent someone putting | |
6727 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6728 | optimization for them! */ |
3f764659 | 6729 | broken_opd: |
4eca0228 | 6730 | _bfd_error_handler |
871b3ab2 | 6731 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 6732 | broken = TRUE; |
1e2f5b6e AM |
6733 | break; |
6734 | } | |
6735 | ||
50bc7936 AM |
6736 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6737 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6738 | { | |
4eca0228 | 6739 | _bfd_error_handler |
695344c0 | 6740 | /* xgettext:c-format */ |
871b3ab2 | 6741 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 6742 | ibfd, r_type); |
51aecdc5 | 6743 | broken = TRUE; |
50bc7936 AM |
6744 | break; |
6745 | } | |
6746 | ||
1e2f5b6e | 6747 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6748 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6749 | r_symndx, ibfd)) | |
50bc7936 | 6750 | goto error_ret; |
1e2f5b6e AM |
6751 | |
6752 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6753 | { | |
411e1bfb AM |
6754 | const char *sym_name; |
6755 | if (h != NULL) | |
6756 | sym_name = h->root.root.string; | |
6757 | else | |
26c61ae5 L |
6758 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6759 | sym_sec); | |
411e1bfb | 6760 | |
4eca0228 | 6761 | _bfd_error_handler |
695344c0 | 6762 | /* xgettext:c-format */ |
871b3ab2 | 6763 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 6764 | ibfd, sym_name); |
51aecdc5 | 6765 | broken = TRUE; |
1e2f5b6e AM |
6766 | break; |
6767 | } | |
6768 | ||
51020317 AM |
6769 | /* opd entries are always for functions defined in the |
6770 | current input bfd. If the symbol isn't defined in the | |
6771 | input bfd, then we won't be using the function in this | |
6772 | bfd; It must be defined in a linkonce section in another | |
6773 | bfd, or is weak. It's also possible that we are | |
6774 | discarding the function due to a linker script /DISCARD/, | |
6775 | which we test for via the output_section. */ | |
6776 | if (sym_sec->owner != ibfd | |
6777 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6778 | need_edit = TRUE; |
1e2f5b6e | 6779 | |
50bc7936 | 6780 | rel += 2; |
51aecdc5 AM |
6781 | if (rel + 1 == relend |
6782 | || (rel + 2 < relend | |
6783 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
6784 | ++rel; | |
6785 | ||
6786 | if (rel == relend) | |
3f764659 JJ |
6787 | { |
6788 | if (sec->size == offset + 24) | |
6789 | { | |
6790 | need_pad = NULL; | |
6791 | break; | |
6792 | } | |
51aecdc5 | 6793 | if (sec->size == offset + 16) |
3f764659 JJ |
6794 | { |
6795 | cnt_16b++; | |
6796 | break; | |
6797 | } | |
6798 | goto broken_opd; | |
6799 | } | |
3f764659 JJ |
6800 | else if (rel + 1 < relend |
6801 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6802 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6803 | { | |
51aecdc5 AM |
6804 | if (rel[0].r_offset == offset + 16) |
6805 | cnt_16b++; | |
6806 | else if (rel[0].r_offset != offset + 24) | |
6807 | goto broken_opd; | |
3f764659 JJ |
6808 | } |
6809 | else | |
6810 | goto broken_opd; | |
1e2f5b6e AM |
6811 | } |
6812 | ||
e7d1c40c | 6813 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 6814 | |
51aecdc5 | 6815 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
6816 | { |
6817 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 6818 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 6819 | bfd_byte *rptr, *wptr; |
983bddc8 | 6820 | bfd_byte *new_contents; |
74f0fb50 AM |
6821 | bfd_size_type amt; |
6822 | ||
983bddc8 | 6823 | new_contents = NULL; |
51aecdc5 | 6824 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 6825 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 6826 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
6827 | if (opd->adjust == NULL) |
6828 | return FALSE; | |
1e2f5b6e AM |
6829 | |
6830 | /* This seems a waste of time as input .opd sections are all | |
6831 | zeros as generated by gcc, but I suppose there's no reason | |
6832 | this will always be so. We might start putting something in | |
6833 | the third word of .opd entries. */ | |
6834 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6835 | { | |
eea6121a AM |
6836 | bfd_byte *loc; |
6837 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6838 | { |
eea6121a AM |
6839 | if (loc != NULL) |
6840 | free (loc); | |
50bc7936 | 6841 | error_ret: |
6cdc0ccc AM |
6842 | if (local_syms != NULL |
6843 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6844 | free (local_syms); | |
6cdc0ccc AM |
6845 | if (elf_section_data (sec)->relocs != relstart) |
6846 | free (relstart); | |
b34976b6 | 6847 | return FALSE; |
6cdc0ccc | 6848 | } |
1e2f5b6e AM |
6849 | sec->contents = loc; |
6850 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6851 | } | |
6852 | ||
6853 | elf_section_data (sec)->relocs = relstart; | |
6854 | ||
3f764659 | 6855 | new_contents = sec->contents; |
3f764659 JJ |
6856 | if (add_aux_fields) |
6857 | { | |
6858 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6859 | if (new_contents == NULL) | |
6860 | return FALSE; | |
51aecdc5 | 6861 | need_pad = NULL; |
3f764659 | 6862 | } |
b4f4e59f AM |
6863 | wptr = new_contents; |
6864 | rptr = sec->contents; | |
1e2f5b6e | 6865 | write_rel = relstart; |
51aecdc5 | 6866 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6867 | { |
50bc7936 AM |
6868 | unsigned long r_symndx; |
6869 | asection *sym_sec; | |
6870 | struct elf_link_hash_entry *h; | |
51aecdc5 | 6871 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 6872 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
6873 | long opd_ent_size; |
6874 | Elf_Internal_Rela *next_rel; | |
6875 | bfd_boolean skip; | |
50bc7936 AM |
6876 | |
6877 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6878 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6879 | r_symndx, ibfd)) |
50bc7936 AM |
6880 | goto error_ret; |
6881 | ||
51aecdc5 AM |
6882 | next_rel = rel + 2; |
6883 | if (next_rel + 1 == relend | |
6884 | || (next_rel + 2 < relend | |
6885 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
6886 | ++next_rel; | |
6887 | ||
6888 | /* See if the .opd entry is full 24 byte or | |
6889 | 16 byte (with fd_aux entry overlapped with next | |
6890 | fd_func). */ | |
6891 | opd_ent_size = 24; | |
6892 | if (next_rel == relend) | |
1e2f5b6e | 6893 | { |
51aecdc5 | 6894 | if (sec->size == rel->r_offset + 16) |
3f764659 | 6895 | opd_ent_size = 16; |
51aecdc5 AM |
6896 | } |
6897 | else if (next_rel->r_offset == rel->r_offset + 16) | |
6898 | opd_ent_size = 16; | |
3f764659 | 6899 | |
51aecdc5 AM |
6900 | if (h != NULL |
6901 | && h->root.root.string[0] == '.') | |
6902 | { | |
8c5b4e52 AM |
6903 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
6904 | if (fdh != NULL) | |
6905 | { | |
6906 | fdh = ppc_follow_link (fdh); | |
6907 | if (fdh->elf.root.type != bfd_link_hash_defined | |
6908 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6909 | fdh = NULL; | |
6910 | } | |
51aecdc5 | 6911 | } |
1e2f5b6e | 6912 | |
51aecdc5 AM |
6913 | skip = (sym_sec->owner != ibfd |
6914 | || sym_sec->output_section == bfd_abs_section_ptr); | |
6915 | if (skip) | |
6916 | { | |
6917 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 6918 | { |
51aecdc5 AM |
6919 | /* Arrange for the function descriptor sym |
6920 | to be dropped. */ | |
6921 | fdh->elf.root.u.def.value = 0; | |
6922 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6923 | } |
51aecdc5 | 6924 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 6925 | |
0e1862bb | 6926 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
6927 | rel = next_rel; |
6928 | else | |
6929 | while (1) | |
6930 | { | |
6931 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
6932 | NULL, h, sym)) | |
6933 | goto error_ret; | |
754021d0 | 6934 | |
51aecdc5 AM |
6935 | if (++rel == next_rel) |
6936 | break; | |
1e2f5b6e | 6937 | |
51aecdc5 AM |
6938 | r_symndx = ELF64_R_SYM (rel->r_info); |
6939 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
6940 | r_symndx, ibfd)) | |
6941 | goto error_ret; | |
6942 | } | |
50bc7936 AM |
6943 | } |
6944 | else | |
1e2f5b6e | 6945 | { |
51aecdc5 AM |
6946 | /* We'll be keeping this opd entry. */ |
6947 | long adjust; | |
6948 | ||
6949 | if (fdh != NULL) | |
6950 | { | |
6951 | /* Redefine the function descriptor symbol to | |
6952 | this location in the opd section. It is | |
6953 | necessary to update the value here rather | |
6954 | than using an array of adjustments as we do | |
6955 | for local symbols, because various places | |
6956 | in the generic ELF code use the value | |
6957 | stored in u.def.value. */ | |
6958 | fdh->elf.root.u.def.value = wptr - new_contents; | |
6959 | fdh->adjust_done = 1; | |
6960 | } | |
6961 | ||
6962 | /* Local syms are a bit tricky. We could | |
6963 | tweak them as they can be cached, but | |
6964 | we'd need to look through the local syms | |
6965 | for the function descriptor sym which we | |
6966 | don't have at the moment. So keep an | |
6967 | array of adjustments. */ | |
6968 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
6969 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
6970 | ||
6971 | if (wptr != rptr) | |
6972 | memcpy (wptr, rptr, opd_ent_size); | |
6973 | wptr += opd_ent_size; | |
6974 | if (add_aux_fields && opd_ent_size == 16) | |
6975 | { | |
6976 | memset (wptr, '\0', 8); | |
6977 | wptr += 8; | |
6978 | } | |
6979 | ||
50bc7936 | 6980 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
6981 | new opd entries. */ |
6982 | for ( ; rel != next_rel; ++rel) | |
6983 | { | |
6984 | rel->r_offset += adjust; | |
6985 | if (write_rel != rel) | |
6986 | memcpy (write_rel, rel, sizeof (*rel)); | |
6987 | ++write_rel; | |
6988 | } | |
1e2f5b6e | 6989 | } |
51aecdc5 AM |
6990 | |
6991 | rptr += opd_ent_size; | |
1e2f5b6e AM |
6992 | } |
6993 | ||
3f764659 | 6994 | sec->size = wptr - new_contents; |
1e2f5b6e | 6995 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6996 | if (add_aux_fields) |
6997 | { | |
6998 | free (sec->contents); | |
6999 | sec->contents = new_contents; | |
7000 | } | |
7001 | ||
05bf9422 | 7002 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7003 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7004 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7005 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7006 | some_edited = TRUE; |
1e2f5b6e | 7007 | } |
6cdc0ccc | 7008 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7009 | free (relstart); |
6cdc0ccc | 7010 | |
411e1bfb AM |
7011 | if (local_syms != NULL |
7012 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7013 | { | |
7014 | if (!info->keep_memory) | |
7015 | free (local_syms); | |
7016 | else | |
7017 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7018 | } | |
7019 | } | |
7020 | ||
754021d0 AM |
7021 | if (some_edited) |
7022 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7023 | ||
3f764659 JJ |
7024 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7025 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7026 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7027 | { |
7028 | bfd_byte *p; | |
7029 | ||
7030 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7031 | { | |
7032 | BFD_ASSERT (need_pad->size > 0); | |
7033 | ||
7034 | p = bfd_malloc (need_pad->size + 8); | |
7035 | if (p == NULL) | |
7036 | return FALSE; | |
699733f6 | 7037 | |
2cdcc330 AM |
7038 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7039 | p, 0, need_pad->size)) | |
3f764659 JJ |
7040 | return FALSE; |
7041 | ||
7042 | need_pad->contents = p; | |
7043 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7044 | } | |
7045 | else | |
7046 | { | |
7047 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7048 | if (p == NULL) | |
7049 | return FALSE; | |
7050 | ||
7051 | need_pad->contents = p; | |
7052 | } | |
7053 | ||
7054 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7055 | need_pad->size += 8; | |
7056 | } | |
7057 | ||
411e1bfb AM |
7058 | return TRUE; |
7059 | } | |
7060 | ||
3e04d765 AM |
7061 | /* Analyze inline PLT call relocations to see whether calls to locally |
7062 | defined functions can be converted to direct calls. */ | |
7063 | ||
7064 | bfd_boolean | |
7065 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7066 | { | |
7067 | struct ppc_link_hash_table *htab; | |
7068 | bfd *ibfd; | |
7069 | asection *sec; | |
7070 | bfd_vma low_vma, high_vma, limit; | |
7071 | ||
7072 | htab = ppc_hash_table (info); | |
7073 | if (htab == NULL) | |
7074 | return FALSE; | |
7075 | ||
7076 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7077 | reduced somewhat to cater for possible stubs that might be added | |
7078 | between the call and its destination. */ | |
7079 | if (htab->params->group_size < 0) | |
7080 | { | |
7081 | limit = -htab->params->group_size; | |
7082 | if (limit == 1) | |
7083 | limit = 0x1e00000; | |
7084 | } | |
7085 | else | |
7086 | { | |
7087 | limit = htab->params->group_size; | |
7088 | if (limit == 1) | |
7089 | limit = 0x1c00000; | |
7090 | } | |
7091 | ||
7092 | low_vma = -1; | |
7093 | high_vma = 0; | |
7094 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7095 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7096 | { | |
7097 | if (low_vma > sec->vma) | |
7098 | low_vma = sec->vma; | |
7099 | if (high_vma < sec->vma + sec->size) | |
7100 | high_vma = sec->vma + sec->size; | |
7101 | } | |
7102 | ||
7103 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7104 | convert all inline PLT sequences to direct calls when the symbol | |
7105 | is local. */ | |
7106 | if (high_vma - low_vma < limit) | |
7107 | { | |
7108 | htab->can_convert_all_inline_plt = 1; | |
7109 | return TRUE; | |
7110 | } | |
7111 | ||
7112 | /* Otherwise, go looking through relocs for cases where a direct | |
7113 | call won't reach. Mark the symbol on any such reloc to disable | |
7114 | the optimization and keep the PLT entry as it seems likely that | |
7115 | this will be better than creating trampolines. Note that this | |
7116 | will disable the optimization for all inline PLT calls to a | |
7117 | particular symbol, not just those that won't reach. The | |
7118 | difficulty in doing a more precise optimization is that the | |
7119 | linker needs to make a decision depending on whether a | |
7120 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7121 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7122 | the sequence, and there is nothing that ties those relocs | |
7123 | together except their symbol. */ | |
7124 | ||
7125 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7126 | { | |
7127 | Elf_Internal_Shdr *symtab_hdr; | |
7128 | Elf_Internal_Sym *local_syms; | |
7129 | ||
7130 | if (!is_ppc64_elf (ibfd)) | |
7131 | continue; | |
7132 | ||
7133 | local_syms = NULL; | |
7134 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7135 | ||
7136 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7137 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7138 | && !bfd_is_abs_section (sec->output_section)) | |
7139 | { | |
7140 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7141 | ||
7142 | /* Read the relocations. */ | |
7143 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7144 | info->keep_memory); | |
7145 | if (relstart == NULL) | |
7146 | return FALSE; | |
7147 | ||
7148 | relend = relstart + sec->reloc_count; | |
7149 | for (rel = relstart; rel < relend; ) | |
7150 | { | |
7151 | enum elf_ppc64_reloc_type r_type; | |
7152 | unsigned long r_symndx; | |
7153 | asection *sym_sec; | |
7154 | struct elf_link_hash_entry *h; | |
7155 | Elf_Internal_Sym *sym; | |
7156 | unsigned char *tls_maskp; | |
7157 | ||
7158 | r_type = ELF64_R_TYPE (rel->r_info); | |
7159 | if (r_type != R_PPC64_PLTCALL) | |
7160 | continue; | |
7161 | ||
7162 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7163 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7164 | r_symndx, ibfd)) | |
7165 | { | |
7166 | if (elf_section_data (sec)->relocs != relstart) | |
7167 | free (relstart); | |
7168 | if (local_syms != NULL | |
2cdcc330 | 7169 | && symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7170 | free (local_syms); |
7171 | return FALSE; | |
7172 | } | |
7173 | ||
7174 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7175 | { | |
7176 | bfd_vma from, to; | |
7177 | if (h != NULL) | |
7178 | to = h->root.u.def.value; | |
7179 | else | |
7180 | to = sym->st_value; | |
7181 | to += (rel->r_addend | |
7182 | + sym_sec->output_offset | |
7183 | + sym_sec->output_section->vma); | |
7184 | from = (rel->r_offset | |
7185 | + sec->output_offset | |
7186 | + sec->output_section->vma); | |
7187 | if (to - from + limit < 2 * limit) | |
7188 | *tls_maskp &= ~PLT_KEEP; | |
7189 | } | |
7190 | } | |
7191 | if (elf_section_data (sec)->relocs != relstart) | |
7192 | free (relstart); | |
7193 | } | |
7194 | ||
7195 | if (local_syms != NULL | |
7196 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7197 | { | |
7198 | if (!info->keep_memory) | |
7199 | free (local_syms); | |
7200 | else | |
7201 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7202 | } | |
7203 | } | |
7204 | ||
7205 | return TRUE; | |
7206 | } | |
7207 | ||
e1918d23 | 7208 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7209 | |
e1918d23 | 7210 | asection * |
e7d1c40c | 7211 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7212 | { |
411e1bfb AM |
7213 | struct ppc_link_hash_table *htab; |
7214 | ||
411e1bfb | 7215 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7216 | if (htab == NULL) |
7217 | return NULL; | |
7218 | ||
ee67d69a AM |
7219 | if (abiversion (info->output_bfd) == 1) |
7220 | htab->opd_abi = 1; | |
7221 | ||
e7d1c40c | 7222 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7223 | htab->do_multi_toc = 0; |
7224 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7225 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7226 | |
8b5f1ed8 AM |
7227 | /* Default to --no-plt-localentry, as this option can cause problems |
7228 | with symbol interposition. For example, glibc libpthread.so and | |
7229 | libc.so duplicate many pthread symbols, with a fallback | |
7230 | implementation in libc.so. In some cases the fallback does more | |
7231 | work than the pthread implementation. __pthread_condattr_destroy | |
7232 | is one such symbol: the libpthread.so implementation is | |
7233 | localentry:0 while the libc.so implementation is localentry:8. | |
7234 | An app that "cleverly" uses dlopen to only load necessary | |
7235 | libraries at runtime may omit loading libpthread.so when not | |
7236 | running multi-threaded, which then results in the libc.so | |
7237 | fallback symbols being used and ld.so complaining. Now there | |
7238 | are workarounds in ld (see non_zero_localentry) to detect the | |
7239 | pthread situation, but that may not be the only case where | |
7240 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7241 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7242 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
7243 | if (htab->params->plt_localentry0 |
7244 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7245 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7246 | _bfd_error_handler |
7247 | (_("warning: --plt-localentry is especially dangerous without " | |
7248 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7249 | |
3a71aa26 AM |
7250 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7251 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7252 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7253 | /* Move dynamic linking info to the function descriptor sym. */ |
7254 | if (htab->tls_get_addr != NULL) | |
7255 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7256 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7257 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7258 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 7259 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
7260 | { |
7261 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7262 | ||
7263 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7264 | FALSE, FALSE, TRUE); | |
7265 | if (opt != NULL) | |
7266 | func_desc_adjust (opt, info); | |
7267 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7268 | FALSE, FALSE, TRUE); | |
7269 | if (opt_fd != NULL | |
7270 | && (opt_fd->root.type == bfd_link_hash_defined | |
7271 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7272 | { | |
7273 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7274 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7275 | be calling __tls_get_addr via a plt call stub, then | |
7276 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7277 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7278 | if (htab->elf.dynamic_sections_created | |
7279 | && tga_fd != NULL | |
7280 | && (tga_fd->type == STT_FUNC | |
7281 | || tga_fd->needs_plt) | |
7282 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 7283 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
7284 | { |
7285 | struct plt_entry *ent; | |
7286 | ||
7287 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7288 | if (ent->plt.refcount > 0) | |
7289 | break; | |
7290 | if (ent != NULL) | |
7291 | { | |
7292 | tga_fd->root.type = bfd_link_hash_indirect; | |
7293 | tga_fd->root.u.i.link = &opt_fd->root; | |
7294 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 7295 | opt_fd->mark = 1; |
a7f2871e AM |
7296 | if (opt_fd->dynindx != -1) |
7297 | { | |
7298 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7299 | opt_fd->dynindx = -1; | |
7300 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7301 | opt_fd->dynstr_index); | |
7302 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7303 | return NULL; |
a7f2871e | 7304 | } |
2cdcc330 AM |
7305 | htab->tls_get_addr_fd |
7306 | = (struct ppc_link_hash_entry *) opt_fd; | |
a7f2871e AM |
7307 | tga = &htab->tls_get_addr->elf; |
7308 | if (opt != NULL && tga != NULL) | |
7309 | { | |
7310 | tga->root.type = bfd_link_hash_indirect; | |
7311 | tga->root.u.i.link = &opt->root; | |
7312 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 7313 | opt->mark = 1; |
a7f2871e AM |
7314 | _bfd_elf_link_hash_hide_symbol (info, opt, |
7315 | tga->forced_local); | |
7316 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7317 | } | |
7318 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7319 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7320 | if (htab->tls_get_addr != NULL) | |
7321 | { | |
7322 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7323 | htab->tls_get_addr->is_func = 1; | |
7324 | } | |
7325 | } | |
7326 | } | |
7327 | } | |
7c9cf415 AM |
7328 | else if (htab->params->tls_get_addr_opt < 0) |
7329 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7330 | } |
33c0ec9d | 7331 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7332 | } |
8387904d | 7333 | |
3a71aa26 AM |
7334 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7335 | HASH1 or HASH2. */ | |
8387904d | 7336 | |
3a71aa26 AM |
7337 | static bfd_boolean |
7338 | branch_reloc_hash_match (const bfd *ibfd, | |
7339 | const Elf_Internal_Rela *rel, | |
7340 | const struct ppc_link_hash_entry *hash1, | |
7341 | const struct ppc_link_hash_entry *hash2) | |
7342 | { | |
7343 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7344 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7345 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7346 | ||
e054468f | 7347 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7348 | { |
3a71aa26 AM |
7349 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7350 | struct elf_link_hash_entry *h; | |
8387904d | 7351 | |
3a71aa26 | 7352 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7353 | h = elf_follow_link (h); |
3a71aa26 AM |
7354 | if (h == &hash1->elf || h == &hash2->elf) |
7355 | return TRUE; | |
a48ebf4d | 7356 | } |
3a71aa26 | 7357 | return FALSE; |
951fd09b | 7358 | } |
411e1bfb | 7359 | |
951fd09b AM |
7360 | /* Run through all the TLS relocs looking for optimization |
7361 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7362 | a preliminary section layout so that we know the TLS segment | |
7363 | offsets. We can't optimize earlier because some optimizations need | |
7364 | to know the tp offset, and we need to optimize before allocating | |
7365 | dynamic relocations. */ | |
7366 | ||
7367 | bfd_boolean | |
33c0ec9d | 7368 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7369 | { |
7370 | bfd *ibfd; | |
7371 | asection *sec; | |
7372 | struct ppc_link_hash_table *htab; | |
663a1470 | 7373 | unsigned char *toc_ref; |
102890f0 | 7374 | int pass; |
951fd09b | 7375 | |
3cbc1e5e | 7376 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7377 | return TRUE; |
7378 | ||
951fd09b | 7379 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7380 | if (htab == NULL) |
7381 | return FALSE; | |
7382 | ||
663a1470 AM |
7383 | /* Make two passes over the relocs. On the first pass, mark toc |
7384 | entries involved with tls relocs, and check that tls relocs | |
7385 | involved in setting up a tls_get_addr call are indeed followed by | |
7386 | such a call. If they are not, we can't do any tls optimization. | |
7387 | On the second pass twiddle tls_mask flags to notify | |
7388 | relocate_section that optimization can be done, and adjust got | |
7389 | and plt refcounts. */ | |
7390 | toc_ref = NULL; | |
7391 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7392 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7393 | { |
7394 | Elf_Internal_Sym *locsyms = NULL; | |
7395 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7396 | ||
102890f0 AM |
7397 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7398 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7399 | { | |
7400 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7401 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7402 | |
102890f0 AM |
7403 | /* Read the relocations. */ |
7404 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7405 | info->keep_memory); | |
7406 | if (relstart == NULL) | |
2915c55b JK |
7407 | { |
7408 | free (toc_ref); | |
7409 | return FALSE; | |
7410 | } | |
411e1bfb | 7411 | |
102890f0 AM |
7412 | relend = relstart + sec->reloc_count; |
7413 | for (rel = relstart; rel < relend; rel++) | |
7414 | { | |
7415 | enum elf_ppc64_reloc_type r_type; | |
7416 | unsigned long r_symndx; | |
7417 | struct elf_link_hash_entry *h; | |
7418 | Elf_Internal_Sym *sym; | |
7419 | asection *sym_sec; | |
f961d9dd AM |
7420 | unsigned char *tls_mask; |
7421 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
7422 | bfd_vma value; |
7423 | bfd_boolean ok_tprel, is_local; | |
7424 | long toc_ref_index = 0; | |
7425 | int expecting_tls_get_addr = 0; | |
663a1470 | 7426 | bfd_boolean ret = FALSE; |
411e1bfb | 7427 | |
102890f0 AM |
7428 | r_symndx = ELF64_R_SYM (rel->r_info); |
7429 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7430 | r_symndx, ibfd)) | |
7431 | { | |
7432 | err_free_rel: | |
7433 | if (elf_section_data (sec)->relocs != relstart) | |
7434 | free (relstart); | |
7435 | if (toc_ref != NULL) | |
7436 | free (toc_ref); | |
7437 | if (locsyms != NULL | |
0ffa91dd | 7438 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7439 | != (unsigned char *) locsyms)) |
7440 | free (locsyms); | |
663a1470 | 7441 | return ret; |
102890f0 | 7442 | } |
411e1bfb | 7443 | |
102890f0 AM |
7444 | if (h != NULL) |
7445 | { | |
766bc656 AM |
7446 | if (h->root.type == bfd_link_hash_defined |
7447 | || h->root.type == bfd_link_hash_defweak) | |
7448 | value = h->root.u.def.value; | |
7449 | else if (h->root.type == bfd_link_hash_undefweak) | |
7450 | value = 0; | |
7451 | else | |
663a1470 AM |
7452 | { |
7453 | found_tls_get_addr_arg = 0; | |
7454 | continue; | |
7455 | } | |
102890f0 AM |
7456 | } |
7457 | else | |
7458 | /* Symbols referenced by TLS relocs must be of type | |
7459 | STT_TLS. So no need for .opd local sym adjust. */ | |
7460 | value = sym->st_value; | |
7461 | ||
7462 | ok_tprel = FALSE; | |
7463 | is_local = FALSE; | |
7464 | if (h == NULL | |
7465 | || !h->def_dynamic) | |
7466 | { | |
7467 | is_local = TRUE; | |
766bc656 AM |
7468 | if (h != NULL |
7469 | && h->root.type == bfd_link_hash_undefweak) | |
7470 | ok_tprel = TRUE; | |
c27b8c2a AM |
7471 | else if (sym_sec != NULL |
7472 | && sym_sec->output_section != NULL) | |
766bc656 AM |
7473 | { |
7474 | value += sym_sec->output_offset; | |
7475 | value += sym_sec->output_section->vma; | |
7476 | value -= htab->elf.tls_sec->vma; | |
7477 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7478 | < (bfd_vma) 1 << 32); | |
7479 | } | |
102890f0 | 7480 | } |
951fd09b | 7481 | |
102890f0 | 7482 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
7483 | /* If this section has old-style __tls_get_addr calls |
7484 | without marker relocs, then check that each | |
7485 | __tls_get_addr call reloc is preceded by a reloc | |
7486 | that conceivably belongs to the __tls_get_addr arg | |
7487 | setup insn. If we don't find matching arg setup | |
7488 | relocs, don't do any tls optimization. */ | |
7489 | if (pass == 0 | |
7490 | && sec->has_tls_get_addr_call | |
7491 | && h != NULL | |
7492 | && (h == &htab->tls_get_addr->elf | |
7493 | || h == &htab->tls_get_addr_fd->elf) | |
7494 | && !found_tls_get_addr_arg | |
7495 | && is_branch_reloc (r_type)) | |
7496 | { | |
25f53a85 | 7497 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
7498 | "TLS optimization disabled\n"), |
7499 | ibfd, sec, rel->r_offset); | |
7500 | ret = TRUE; | |
7501 | goto err_free_rel; | |
7502 | } | |
7503 | ||
7504 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
7505 | switch (r_type) |
7506 | { | |
7507 | case R_PPC64_GOT_TLSLD16: | |
7508 | case R_PPC64_GOT_TLSLD16_LO: | |
7509 | expecting_tls_get_addr = 1; | |
663a1470 | 7510 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7511 | /* Fall through. */ |
102890f0 AM |
7512 | |
7513 | case R_PPC64_GOT_TLSLD16_HI: | |
7514 | case R_PPC64_GOT_TLSLD16_HA: | |
7515 | /* These relocs should never be against a symbol | |
7516 | defined in a shared lib. Leave them alone if | |
7517 | that turns out to be the case. */ | |
7518 | if (!is_local) | |
7519 | continue; | |
411e1bfb | 7520 | |
102890f0 | 7521 | /* LD -> LE */ |
411e1bfb | 7522 | tls_set = 0; |
102890f0 AM |
7523 | tls_clear = TLS_LD; |
7524 | tls_type = TLS_TLS | TLS_LD; | |
7525 | break; | |
411e1bfb | 7526 | |
102890f0 AM |
7527 | case R_PPC64_GOT_TLSGD16: |
7528 | case R_PPC64_GOT_TLSGD16_LO: | |
7529 | expecting_tls_get_addr = 1; | |
663a1470 | 7530 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7531 | /* Fall through. */ |
102890f0 AM |
7532 | |
7533 | case R_PPC64_GOT_TLSGD16_HI: | |
7534 | case R_PPC64_GOT_TLSGD16_HA: | |
7535 | if (ok_tprel) | |
7536 | /* GD -> LE */ | |
411e1bfb | 7537 | tls_set = 0; |
102890f0 AM |
7538 | else |
7539 | /* GD -> IE */ | |
7540 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7541 | tls_clear = TLS_GD; | |
7542 | tls_type = TLS_TLS | TLS_GD; | |
7543 | break; | |
7544 | ||
7545 | case R_PPC64_GOT_TPREL16_DS: | |
7546 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7547 | case R_PPC64_GOT_TPREL16_HI: | |
7548 | case R_PPC64_GOT_TPREL16_HA: | |
7549 | if (ok_tprel) | |
7550 | { | |
7551 | /* IE -> LE */ | |
7552 | tls_set = 0; | |
7553 | tls_clear = TLS_TPREL; | |
7554 | tls_type = TLS_TLS | TLS_TPREL; | |
7555 | break; | |
7556 | } | |
411e1bfb AM |
7557 | continue; |
7558 | ||
727fc41e AM |
7559 | case R_PPC64_TLSGD: |
7560 | case R_PPC64_TLSLD: | |
23cedd1d AM |
7561 | if (rel + 1 < relend |
7562 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
7563 | { | |
7564 | if (pass != 0 | |
2cdcc330 AM |
7565 | && (ELF64_R_TYPE (rel[1].r_info) |
7566 | != R_PPC64_PLTSEQ)) | |
23cedd1d AM |
7567 | { |
7568 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
7569 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 7570 | r_symndx, ibfd)) |
23cedd1d AM |
7571 | goto err_free_rel; |
7572 | if (h != NULL) | |
7573 | { | |
7574 | struct plt_entry *ent = NULL; | |
7575 | ||
7576 | for (ent = h->plt.plist; | |
7577 | ent != NULL; | |
7578 | ent = ent->next) | |
7579 | if (ent->addend == rel[1].r_addend) | |
7580 | break; | |
7581 | ||
7582 | if (ent != NULL | |
7583 | && ent->plt.refcount > 0) | |
7584 | ent->plt.refcount -= 1; | |
7585 | } | |
7586 | } | |
7587 | continue; | |
7588 | } | |
663a1470 | 7589 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7590 | /* Fall through. */ |
663a1470 AM |
7591 | |
7592 | case R_PPC64_TLS: | |
7593 | case R_PPC64_TOC16: | |
7594 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
7595 | if (sym_sec == NULL || sym_sec != toc) |
7596 | continue; | |
7597 | ||
7598 | /* Mark this toc entry as referenced by a TLS | |
7599 | code sequence. We can do that now in the | |
7600 | case of R_PPC64_TLS, and after checking for | |
7601 | tls_get_addr for the TOC16 relocs. */ | |
7602 | if (toc_ref == NULL) | |
2cdcc330 AM |
7603 | toc_ref |
7604 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
7605 | if (toc_ref == NULL) |
7606 | goto err_free_rel; | |
7607 | ||
102890f0 AM |
7608 | if (h != NULL) |
7609 | value = h->root.u.def.value; | |
7610 | else | |
7611 | value = sym->st_value; | |
7612 | value += rel->r_addend; | |
73242275 AM |
7613 | if (value % 8 != 0) |
7614 | continue; | |
7615 | BFD_ASSERT (value < toc->size | |
7616 | && toc->output_offset % 8 == 0); | |
663a1470 | 7617 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
7618 | if (r_type == R_PPC64_TLS |
7619 | || r_type == R_PPC64_TLSGD | |
7620 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7621 | { |
7622 | toc_ref[toc_ref_index] = 1; | |
7623 | continue; | |
7624 | } | |
7625 | ||
7626 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7627 | continue; | |
7628 | ||
7629 | tls_set = 0; | |
7630 | tls_clear = 0; | |
7631 | expecting_tls_get_addr = 2; | |
7632 | break; | |
7633 | ||
7634 | case R_PPC64_TPREL64: | |
7635 | if (pass == 0 | |
7636 | || sec != toc | |
7637 | || toc_ref == NULL | |
663a1470 | 7638 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7639 | continue; |
7640 | if (ok_tprel) | |
7641 | { | |
7642 | /* IE -> LE */ | |
7643 | tls_set = TLS_EXPLICIT; | |
7644 | tls_clear = TLS_TPREL; | |
7645 | break; | |
7646 | } | |
7647 | continue; | |
7648 | ||
7649 | case R_PPC64_DTPMOD64: | |
7650 | if (pass == 0 | |
7651 | || sec != toc | |
7652 | || toc_ref == NULL | |
663a1470 | 7653 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7654 | continue; |
7655 | if (rel + 1 < relend | |
7656 | && (rel[1].r_info | |
7657 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7658 | && rel[1].r_offset == rel->r_offset + 8) | |
7659 | { | |
7660 | if (ok_tprel) | |
7661 | /* GD -> LE */ | |
7662 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7663 | else | |
7664 | /* GD -> IE */ | |
7665 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7666 | tls_clear = TLS_GD; | |
7667 | } | |
7668 | else | |
7669 | { | |
7670 | if (!is_local) | |
7671 | continue; | |
7672 | ||
7673 | /* LD -> LE */ | |
7674 | tls_set = TLS_EXPLICIT; | |
7675 | tls_clear = TLS_LD; | |
7676 | } | |
7677 | break; | |
7678 | ||
7679 | default: | |
7680 | continue; | |
7681 | } | |
7682 | ||
7683 | if (pass == 0) | |
7684 | { | |
727fc41e AM |
7685 | if (!expecting_tls_get_addr |
7686 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7687 | continue; |
7688 | ||
3a71aa26 AM |
7689 | if (rel + 1 < relend |
7690 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7691 | htab->tls_get_addr, | |
7692 | htab->tls_get_addr_fd)) | |
102890f0 | 7693 | { |
3a71aa26 | 7694 | if (expecting_tls_get_addr == 2) |
102890f0 | 7695 | { |
3a71aa26 | 7696 | /* Check for toc tls entries. */ |
f961d9dd | 7697 | unsigned char *toc_tls; |
3a71aa26 AM |
7698 | int retval; |
7699 | ||
7700 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7701 | &locsyms, | |
7702 | rel, ibfd); | |
7703 | if (retval == 0) | |
7704 | goto err_free_rel; | |
663a1470 AM |
7705 | if (toc_tls != NULL) |
7706 | { | |
37da22e5 AM |
7707 | if ((*toc_tls & TLS_TLS) != 0 |
7708 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
7709 | found_tls_get_addr_arg = 1; |
7710 | if (retval > 1) | |
7711 | toc_ref[toc_ref_index] = 1; | |
7712 | } | |
102890f0 | 7713 | } |
3a71aa26 | 7714 | continue; |
102890f0 AM |
7715 | } |
7716 | ||
102890f0 AM |
7717 | /* Uh oh, we didn't find the expected call. We |
7718 | could just mark this symbol to exclude it | |
7719 | from tls optimization but it's safer to skip | |
663a1470 | 7720 | the entire optimization. */ |
695344c0 | 7721 | /* xgettext:c-format */ |
25f53a85 | 7722 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
7723 | "TLS optimization disabled\n"), |
7724 | ibfd, sec, rel->r_offset); | |
7725 | ret = TRUE; | |
7726 | goto err_free_rel; | |
102890f0 AM |
7727 | } |
7728 | ||
37da22e5 AM |
7729 | /* If we don't have old-style __tls_get_addr calls |
7730 | without TLSGD/TLSLD marker relocs, and we haven't | |
7731 | found a new-style __tls_get_addr call with a | |
7732 | marker for this symbol, then we either have a | |
7733 | broken object file or an -mlongcall style | |
7734 | indirect call to __tls_get_addr without a marker. | |
7735 | Disable optimization in this case. */ | |
7736 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
7737 | && (tls_set & TLS_EXPLICIT) == 0 | |
7738 | && !sec->has_tls_get_addr_call | |
7739 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
7740 | != (TLS_TLS | TLS_MARK))) | |
7741 | continue; | |
7742 | ||
23cedd1d | 7743 | if (expecting_tls_get_addr) |
102890f0 | 7744 | { |
23cedd1d AM |
7745 | struct plt_entry *ent = NULL; |
7746 | ||
7747 | if (htab->tls_get_addr != NULL) | |
7748 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7749 | ent != NULL; | |
7750 | ent = ent->next) | |
7751 | if (ent->addend == 0) | |
102890f0 | 7752 | break; |
411e1bfb | 7753 | |
23cedd1d AM |
7754 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
7755 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7756 | ent != NULL; | |
7757 | ent = ent->next) | |
7758 | if (ent->addend == 0) | |
102890f0 | 7759 | break; |
23cedd1d AM |
7760 | |
7761 | if (ent != NULL | |
7762 | && ent->plt.refcount > 0) | |
7763 | ent->plt.refcount -= 1; | |
102890f0 | 7764 | } |
411e1bfb | 7765 | |
102890f0 | 7766 | if (tls_clear == 0) |
30038c59 AM |
7767 | continue; |
7768 | ||
102890f0 AM |
7769 | if ((tls_set & TLS_EXPLICIT) == 0) |
7770 | { | |
7771 | struct got_entry *ent; | |
411e1bfb | 7772 | |
102890f0 AM |
7773 | /* Adjust got entry for this reloc. */ |
7774 | if (h != NULL) | |
7775 | ent = h->got.glist; | |
7776 | else | |
7777 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7778 | |
102890f0 AM |
7779 | for (; ent != NULL; ent = ent->next) |
7780 | if (ent->addend == rel->r_addend | |
7781 | && ent->owner == ibfd | |
7782 | && ent->tls_type == tls_type) | |
7783 | break; | |
7784 | if (ent == NULL) | |
7785 | abort (); | |
411e1bfb | 7786 | |
102890f0 AM |
7787 | if (tls_set == 0) |
7788 | { | |
7789 | /* We managed to get rid of a got entry. */ | |
7790 | if (ent->got.refcount > 0) | |
7791 | ent->got.refcount -= 1; | |
7792 | } | |
7793 | } | |
7794 | else | |
7795 | { | |
7796 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7797 | we'll lose one or two dyn relocs. */ | |
7798 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 7799 | NULL, h, sym)) |
102890f0 | 7800 | return FALSE; |
411e1bfb | 7801 | |
102890f0 AM |
7802 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7803 | { | |
7804 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 7805 | NULL, h, sym)) |
102890f0 AM |
7806 | return FALSE; |
7807 | } | |
7808 | } | |
411e1bfb | 7809 | |
102890f0 AM |
7810 | *tls_mask |= tls_set; |
7811 | *tls_mask &= ~tls_clear; | |
7812 | } | |
8c1d1bb8 | 7813 | |
102890f0 AM |
7814 | if (elf_section_data (sec)->relocs != relstart) |
7815 | free (relstart); | |
7816 | } | |
411e1bfb | 7817 | |
663a1470 AM |
7818 | if (locsyms != NULL |
7819 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
7820 | { | |
7821 | if (!info->keep_memory) | |
7822 | free (locsyms); | |
7823 | else | |
7824 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
7825 | } | |
7826 | } | |
411e1bfb | 7827 | |
663a1470 AM |
7828 | if (toc_ref != NULL) |
7829 | free (toc_ref); | |
9a23f96e | 7830 | htab->do_tls_opt = 1; |
b34976b6 | 7831 | return TRUE; |
1e2f5b6e | 7832 | } |
b34976b6 | 7833 | |
c5614fa4 AM |
7834 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7835 | the values of any global symbols in a toc section that has been | |
7836 | edited. Globals in toc sections should be a rarity, so this function | |
7837 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 7838 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
7839 | |
7840 | struct adjust_toc_info | |
7841 | { | |
7842 | asection *toc; | |
7843 | unsigned long *skip; | |
7844 | bfd_boolean global_toc_syms; | |
7845 | }; | |
7846 | ||
ba761f19 AM |
7847 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
7848 | ||
c5614fa4 AM |
7849 | static bfd_boolean |
7850 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7851 | { | |
7852 | struct ppc_link_hash_entry *eh; | |
7853 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 7854 | unsigned long i; |
c5614fa4 | 7855 | |
c5614fa4 AM |
7856 | if (h->root.type != bfd_link_hash_defined |
7857 | && h->root.type != bfd_link_hash_defweak) | |
7858 | return TRUE; | |
7859 | ||
7860 | eh = (struct ppc_link_hash_entry *) h; | |
7861 | if (eh->adjust_done) | |
7862 | return TRUE; | |
7863 | ||
7864 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7865 | { | |
854b41e7 AM |
7866 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
7867 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 7868 | else |
854b41e7 AM |
7869 | i = eh->elf.root.u.def.value >> 3; |
7870 | ||
ba761f19 | 7871 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 7872 | { |
4eca0228 | 7873 | _bfd_error_handler |
854b41e7 AM |
7874 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
7875 | do | |
7876 | ++i; | |
ba761f19 | 7877 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 7878 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 7879 | } |
854b41e7 AM |
7880 | |
7881 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
7882 | eh->adjust_done = 1; |
7883 | } | |
7884 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7885 | toc_inf->global_toc_syms = TRUE; | |
7886 | ||
7887 | return TRUE; | |
7888 | } | |
7889 | ||
39eeab25 AM |
7890 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
7891 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
7892 | |
7893 | static bfd_boolean | |
39eeab25 | 7894 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 7895 | { |
39eeab25 AM |
7896 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
7897 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
7898 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
7899 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7900 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7901 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7902 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7903 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7904 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7905 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7906 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7907 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7908 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7909 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7910 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
7911 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
7912 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
7913 | /* Exclude lfqu by testing reloc. If relocs are ever | |
7914 | defined for the reduced D field in psq_lu then those | |
7915 | will need testing too. */ | |
7916 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
7917 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
7918 | && (insn & 1) == 0) | |
7919 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
7920 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
7921 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
7922 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
7923 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
7924 | && (insn & 1) == 0)); | |
560c8763 AM |
7925 | } |
7926 | ||
c5614fa4 AM |
7927 | /* Examine all relocs referencing .toc sections in order to remove |
7928 | unused .toc entries. */ | |
7929 | ||
7930 | bfd_boolean | |
33c0ec9d | 7931 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
7932 | { |
7933 | bfd *ibfd; | |
7934 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 7935 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 7936 | |
67f0cbdb | 7937 | htab->do_toc_opt = 1; |
c5614fa4 | 7938 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 7939 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
7940 | { |
7941 | asection *toc, *sec; | |
7942 | Elf_Internal_Shdr *symtab_hdr; | |
7943 | Elf_Internal_Sym *local_syms; | |
425b145b | 7944 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
7945 | unsigned long *skip, *drop; |
7946 | unsigned char *used; | |
7947 | unsigned char *keep, last, some_unused; | |
7948 | ||
854b41e7 AM |
7949 | if (!is_ppc64_elf (ibfd)) |
7950 | continue; | |
7951 | ||
c5614fa4 AM |
7952 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
7953 | if (toc == NULL | |
92b7a70f | 7954 | || toc->size == 0 |
dbaa2011 AM |
7955 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
7956 | || discarded_section (toc)) | |
c5614fa4 AM |
7957 | continue; |
7958 | ||
425b145b | 7959 | toc_relocs = NULL; |
c5614fa4 | 7960 | local_syms = NULL; |
0ffa91dd | 7961 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7962 | |
7963 | /* Look at sections dropped from the final link. */ | |
7964 | skip = NULL; | |
7965 | relstart = NULL; | |
7966 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7967 | { | |
7968 | if (sec->reloc_count == 0 | |
dbaa2011 | 7969 | || !discarded_section (sec) |
c5614fa4 AM |
7970 | || get_opd_info (sec) |
7971 | || (sec->flags & SEC_ALLOC) == 0 | |
7972 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7973 | continue; | |
7974 | ||
7975 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7976 | if (relstart == NULL) | |
7977 | goto error_ret; | |
7978 | ||
7979 | /* Run through the relocs to see which toc entries might be | |
7980 | unused. */ | |
7981 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7982 | { | |
7983 | enum elf_ppc64_reloc_type r_type; | |
7984 | unsigned long r_symndx; | |
7985 | asection *sym_sec; | |
7986 | struct elf_link_hash_entry *h; | |
7987 | Elf_Internal_Sym *sym; | |
7988 | bfd_vma val; | |
7989 | ||
7990 | r_type = ELF64_R_TYPE (rel->r_info); | |
7991 | switch (r_type) | |
7992 | { | |
7993 | default: | |
7994 | continue; | |
7995 | ||
7996 | case R_PPC64_TOC16: | |
7997 | case R_PPC64_TOC16_LO: | |
7998 | case R_PPC64_TOC16_HI: | |
7999 | case R_PPC64_TOC16_HA: | |
8000 | case R_PPC64_TOC16_DS: | |
8001 | case R_PPC64_TOC16_LO_DS: | |
8002 | break; | |
8003 | } | |
8004 | ||
8005 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8006 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8007 | r_symndx, ibfd)) | |
8008 | goto error_ret; | |
8009 | ||
8010 | if (sym_sec != toc) | |
8011 | continue; | |
8012 | ||
8013 | if (h != NULL) | |
8014 | val = h->root.u.def.value; | |
8015 | else | |
8016 | val = sym->st_value; | |
8017 | val += rel->r_addend; | |
8018 | ||
8019 | if (val >= toc->size) | |
8020 | continue; | |
8021 | ||
8022 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8023 | If not, don't mark as unused. */ | |
8024 | if (val & 7) | |
8025 | continue; | |
8026 | ||
8027 | if (skip == NULL) | |
8028 | { | |
854b41e7 | 8029 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8030 | if (skip == NULL) |
8031 | goto error_ret; | |
8032 | } | |
8033 | ||
ba761f19 | 8034 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8035 | } |
8036 | ||
8037 | if (elf_section_data (sec)->relocs != relstart) | |
8038 | free (relstart); | |
8039 | } | |
8040 | ||
ba761f19 AM |
8041 | /* For largetoc loads of address constants, we can convert |
8042 | . addis rx,2,addr@got@ha | |
8043 | . ld ry,addr@got@l(rx) | |
8044 | to | |
8045 | . addis rx,2,addr@toc@ha | |
8046 | . addi ry,rx,addr@toc@l | |
8047 | when addr is within 2G of the toc pointer. This then means | |
8048 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8049 | |
ba761f19 AM |
8050 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8051 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8052 | && toc->reloc_count != 0) | |
8053 | { | |
8054 | /* Read toc relocs. */ | |
425b145b AM |
8055 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8056 | info->keep_memory); | |
8057 | if (toc_relocs == NULL) | |
ba761f19 AM |
8058 | goto error_ret; |
8059 | ||
425b145b | 8060 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8061 | { |
8062 | enum elf_ppc64_reloc_type r_type; | |
8063 | unsigned long r_symndx; | |
8064 | asection *sym_sec; | |
8065 | struct elf_link_hash_entry *h; | |
8066 | Elf_Internal_Sym *sym; | |
8067 | bfd_vma val, addr; | |
8068 | ||
8069 | r_type = ELF64_R_TYPE (rel->r_info); | |
8070 | if (r_type != R_PPC64_ADDR64) | |
8071 | continue; | |
8072 | ||
8073 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8074 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8075 | r_symndx, ibfd)) | |
8076 | goto error_ret; | |
8077 | ||
425b145b | 8078 | if (sym_sec == NULL |
c27b8c2a | 8079 | || sym_sec->output_section == NULL |
dbaa2011 | 8080 | || discarded_section (sym_sec)) |
425b145b AM |
8081 | continue; |
8082 | ||
afe397ea | 8083 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8084 | continue; |
8085 | ||
8086 | if (h != NULL) | |
bddc25c9 AM |
8087 | { |
8088 | if (h->type == STT_GNU_IFUNC) | |
8089 | continue; | |
8090 | val = h->root.u.def.value; | |
8091 | } | |
ba761f19 | 8092 | else |
bddc25c9 AM |
8093 | { |
8094 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8095 | continue; | |
8096 | val = sym->st_value; | |
8097 | } | |
ba761f19 AM |
8098 | val += rel->r_addend; |
8099 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8100 | ||
8101 | /* We don't yet know the exact toc pointer value, but we | |
8102 | know it will be somewhere in the toc section. Don't | |
8103 | optimize if the difference from any possible toc | |
8104 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8105 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8106 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8107 | continue; | |
8108 | ||
8109 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8110 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8111 | continue; | |
8112 | ||
8113 | if (skip == NULL) | |
8114 | { | |
8115 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8116 | if (skip == NULL) | |
8117 | goto error_ret; | |
8118 | } | |
8119 | ||
8120 | skip[rel->r_offset >> 3] | |
425b145b | 8121 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8122 | } |
ba761f19 AM |
8123 | } |
8124 | ||
c5614fa4 AM |
8125 | if (skip == NULL) |
8126 | continue; | |
8127 | ||
8128 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8129 | if (used == NULL) | |
8130 | { | |
8131 | error_ret: | |
8132 | if (local_syms != NULL | |
8133 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8134 | free (local_syms); | |
8135 | if (sec != NULL | |
8136 | && relstart != NULL | |
8137 | && elf_section_data (sec)->relocs != relstart) | |
8138 | free (relstart); | |
425b145b AM |
8139 | if (toc_relocs != NULL |
8140 | && elf_section_data (toc)->relocs != toc_relocs) | |
8141 | free (toc_relocs); | |
c5614fa4 AM |
8142 | if (skip != NULL) |
8143 | free (skip); | |
8144 | return FALSE; | |
8145 | } | |
8146 | ||
30038c59 AM |
8147 | /* Now check all kept sections that might reference the toc. |
8148 | Check the toc itself last. */ | |
8149 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8150 | : ibfd->sections); | |
c5614fa4 | 8151 | sec != NULL; |
c5614fa4 | 8152 | sec = (sec == toc ? NULL |
c5614fa4 | 8153 | : sec->next == NULL ? toc |
30038c59 | 8154 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8155 | : sec->next)) |
8156 | { | |
8157 | int repeat; | |
8158 | ||
8159 | if (sec->reloc_count == 0 | |
dbaa2011 | 8160 | || discarded_section (sec) |
c5614fa4 AM |
8161 | || get_opd_info (sec) |
8162 | || (sec->flags & SEC_ALLOC) == 0 | |
8163 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8164 | continue; | |
8165 | ||
854b41e7 AM |
8166 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8167 | info->keep_memory); | |
c5614fa4 | 8168 | if (relstart == NULL) |
2915c55b JK |
8169 | { |
8170 | free (used); | |
8171 | goto error_ret; | |
8172 | } | |
c5614fa4 AM |
8173 | |
8174 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8175 | do |
d4f1ee75 AM |
8176 | { |
8177 | repeat = 0; | |
8178 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8179 | { | |
8180 | enum elf_ppc64_reloc_type r_type; | |
8181 | unsigned long r_symndx; | |
8182 | asection *sym_sec; | |
8183 | struct elf_link_hash_entry *h; | |
8184 | Elf_Internal_Sym *sym; | |
8185 | bfd_vma val; | |
8186 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8187 | |
d4f1ee75 AM |
8188 | r_type = ELF64_R_TYPE (rel->r_info); |
8189 | switch (r_type) | |
8190 | { | |
8191 | default: | |
8192 | insn_check = no_check; | |
8193 | break; | |
98528052 | 8194 | |
d4f1ee75 AM |
8195 | case R_PPC64_GOT_TLSLD16_HA: |
8196 | case R_PPC64_GOT_TLSGD16_HA: | |
8197 | case R_PPC64_GOT_TPREL16_HA: | |
8198 | case R_PPC64_GOT_DTPREL16_HA: | |
8199 | case R_PPC64_GOT16_HA: | |
8200 | case R_PPC64_TOC16_HA: | |
8201 | insn_check = check_ha; | |
8202 | break; | |
98528052 | 8203 | |
d4f1ee75 AM |
8204 | case R_PPC64_GOT_TLSLD16_LO: |
8205 | case R_PPC64_GOT_TLSGD16_LO: | |
8206 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8207 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8208 | case R_PPC64_GOT16_LO: | |
8209 | case R_PPC64_GOT16_LO_DS: | |
8210 | case R_PPC64_TOC16_LO: | |
8211 | case R_PPC64_TOC16_LO_DS: | |
8212 | insn_check = check_lo; | |
8213 | break; | |
8214 | } | |
560c8763 | 8215 | |
d4f1ee75 AM |
8216 | if (insn_check != no_check) |
8217 | { | |
8218 | bfd_vma off = rel->r_offset & ~3; | |
8219 | unsigned char buf[4]; | |
8220 | unsigned int insn; | |
c5614fa4 | 8221 | |
d4f1ee75 AM |
8222 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8223 | { | |
8224 | free (used); | |
8225 | goto error_ret; | |
8226 | } | |
8227 | insn = bfd_get_32 (ibfd, buf); | |
8228 | if (insn_check == check_lo | |
39eeab25 | 8229 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
8230 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
8231 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8232 | { | |
8233 | char str[12]; | |
8234 | ||
8235 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8236 | sprintf (str, "%#08x", insn); | |
8237 | info->callbacks->einfo | |
695344c0 | 8238 | /* xgettext:c-format */ |
174d0a74 | 8239 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 8240 | " %s instruction\n"), |
d4f1ee75 AM |
8241 | ibfd, sec, rel->r_offset & ~3, str); |
8242 | } | |
8243 | } | |
c5614fa4 | 8244 | |
d4f1ee75 AM |
8245 | switch (r_type) |
8246 | { | |
8247 | case R_PPC64_TOC16: | |
8248 | case R_PPC64_TOC16_LO: | |
8249 | case R_PPC64_TOC16_HI: | |
8250 | case R_PPC64_TOC16_HA: | |
8251 | case R_PPC64_TOC16_DS: | |
8252 | case R_PPC64_TOC16_LO_DS: | |
8253 | /* In case we're taking addresses of toc entries. */ | |
8254 | case R_PPC64_ADDR64: | |
8255 | break; | |
c5614fa4 | 8256 | |
d4f1ee75 AM |
8257 | default: |
8258 | continue; | |
8259 | } | |
c5614fa4 | 8260 | |
d4f1ee75 AM |
8261 | r_symndx = ELF64_R_SYM (rel->r_info); |
8262 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8263 | r_symndx, ibfd)) | |
8264 | { | |
8265 | free (used); | |
8266 | goto error_ret; | |
8267 | } | |
c5614fa4 | 8268 | |
d4f1ee75 AM |
8269 | if (sym_sec != toc) |
8270 | continue; | |
c5614fa4 | 8271 | |
d4f1ee75 AM |
8272 | if (h != NULL) |
8273 | val = h->root.u.def.value; | |
8274 | else | |
8275 | val = sym->st_value; | |
8276 | val += rel->r_addend; | |
ba761f19 | 8277 | |
d4f1ee75 AM |
8278 | if (val >= toc->size) |
8279 | continue; | |
ba761f19 | 8280 | |
d4f1ee75 AM |
8281 | if ((skip[val >> 3] & can_optimize) != 0) |
8282 | { | |
8283 | bfd_vma off; | |
8284 | unsigned char opc; | |
8285 | ||
8286 | switch (r_type) | |
8287 | { | |
8288 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8289 | break; |
ba761f19 | 8290 | |
d4f1ee75 AM |
8291 | case R_PPC64_TOC16_LO_DS: |
8292 | off = rel->r_offset; | |
8293 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8294 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8295 | off, 1)) | |
8296 | { | |
8297 | free (used); | |
8298 | goto error_ret; | |
8299 | } | |
8300 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8301 | break; | |
1a0670f3 | 8302 | /* Fall through. */ |
ba761f19 | 8303 | |
d4f1ee75 AM |
8304 | default: |
8305 | /* Wrong sort of reloc, or not a ld. We may | |
8306 | as well clear ref_from_discarded too. */ | |
8307 | skip[val >> 3] = 0; | |
8308 | } | |
8309 | } | |
8310 | ||
8311 | if (sec != toc) | |
8312 | used[val >> 3] = 1; | |
8313 | /* For the toc section, we only mark as used if this | |
8314 | entry itself isn't unused. */ | |
8315 | else if ((used[rel->r_offset >> 3] | |
8316 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8317 | && !used[val >> 3]) | |
8318 | { | |
8319 | /* Do all the relocs again, to catch reference | |
8320 | chains. */ | |
8321 | repeat = 1; | |
8322 | used[val >> 3] = 1; | |
8323 | } | |
8324 | } | |
8325 | } | |
c5614fa4 | 8326 | while (repeat); |
854b41e7 AM |
8327 | |
8328 | if (elf_section_data (sec)->relocs != relstart) | |
8329 | free (relstart); | |
c5614fa4 AM |
8330 | } |
8331 | ||
8332 | /* Merge the used and skip arrays. Assume that TOC | |
8333 | doublewords not appearing as either used or unused belong | |
de194d85 | 8334 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
8335 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
8336 | drop < skip + (toc->size + 7) / 8; | |
8337 | ++drop, ++keep) | |
8338 | { | |
8339 | if (*keep) | |
8340 | { | |
ba761f19 AM |
8341 | *drop &= ~ref_from_discarded; |
8342 | if ((*drop & can_optimize) != 0) | |
8343 | some_unused = 1; | |
c5614fa4 AM |
8344 | last = 0; |
8345 | } | |
b140b010 | 8346 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8347 | { |
8348 | some_unused = 1; | |
ba761f19 | 8349 | last = ref_from_discarded; |
c5614fa4 AM |
8350 | } |
8351 | else | |
8352 | *drop = last; | |
8353 | } | |
8354 | ||
8355 | free (used); | |
8356 | ||
8357 | if (some_unused) | |
8358 | { | |
8359 | bfd_byte *contents, *src; | |
8360 | unsigned long off; | |
d62b3684 | 8361 | Elf_Internal_Sym *sym; |
ba761f19 | 8362 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8363 | |
8364 | /* Shuffle the toc contents, and at the same time convert the | |
8365 | skip array from booleans into offsets. */ | |
8366 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8367 | goto error_ret; | |
8368 | ||
8369 | elf_section_data (toc)->this_hdr.contents = contents; | |
8370 | ||
8371 | for (src = contents, off = 0, drop = skip; | |
8372 | src < contents + toc->size; | |
8373 | src += 8, ++drop) | |
8374 | { | |
ba761f19 AM |
8375 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8376 | off += 8; | |
c5614fa4 AM |
8377 | else if (off != 0) |
8378 | { | |
8379 | *drop = off; | |
8380 | memcpy (src - off, src, 8); | |
8381 | } | |
8382 | } | |
854b41e7 | 8383 | *drop = off; |
c5614fa4 AM |
8384 | toc->rawsize = toc->size; |
8385 | toc->size = src - contents - off; | |
8386 | ||
ba761f19 AM |
8387 | /* Adjust addends for relocs against the toc section sym, |
8388 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8389 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8390 | { | |
8391 | if (sec->reloc_count == 0 | |
dbaa2011 | 8392 | || discarded_section (sec)) |
c5614fa4 AM |
8393 | continue; |
8394 | ||
8395 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8396 | info->keep_memory); |
c5614fa4 AM |
8397 | if (relstart == NULL) |
8398 | goto error_ret; | |
8399 | ||
8400 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8401 | { | |
8402 | enum elf_ppc64_reloc_type r_type; | |
8403 | unsigned long r_symndx; | |
8404 | asection *sym_sec; | |
8405 | struct elf_link_hash_entry *h; | |
854b41e7 | 8406 | bfd_vma val; |
c5614fa4 AM |
8407 | |
8408 | r_type = ELF64_R_TYPE (rel->r_info); | |
8409 | switch (r_type) | |
8410 | { | |
8411 | default: | |
8412 | continue; | |
8413 | ||
8414 | case R_PPC64_TOC16: | |
8415 | case R_PPC64_TOC16_LO: | |
8416 | case R_PPC64_TOC16_HI: | |
8417 | case R_PPC64_TOC16_HA: | |
8418 | case R_PPC64_TOC16_DS: | |
8419 | case R_PPC64_TOC16_LO_DS: | |
8420 | case R_PPC64_ADDR64: | |
8421 | break; | |
8422 | } | |
8423 | ||
8424 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8425 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8426 | r_symndx, ibfd)) | |
8427 | goto error_ret; | |
8428 | ||
ba761f19 | 8429 | if (sym_sec != toc) |
c5614fa4 AM |
8430 | continue; |
8431 | ||
ba761f19 AM |
8432 | if (h != NULL) |
8433 | val = h->root.u.def.value; | |
8434 | else | |
8435 | { | |
8436 | val = sym->st_value; | |
8437 | if (val != 0) | |
8438 | local_toc_syms = TRUE; | |
8439 | } | |
8440 | ||
8441 | val += rel->r_addend; | |
854b41e7 AM |
8442 | |
8443 | if (val > toc->rawsize) | |
8444 | val = toc->rawsize; | |
ba761f19 AM |
8445 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8446 | continue; | |
8447 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8448 | { | |
8449 | Elf_Internal_Rela *tocrel | |
425b145b | 8450 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
8451 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
8452 | ||
8453 | switch (r_type) | |
8454 | { | |
8455 | case R_PPC64_TOC16_HA: | |
8456 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8457 | break; | |
8458 | ||
8459 | case R_PPC64_TOC16_LO_DS: | |
8460 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8461 | break; | |
8462 | ||
8463 | default: | |
28942f62 AM |
8464 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
8465 | ppc_howto_init (); | |
b140b010 | 8466 | info->callbacks->einfo |
695344c0 | 8467 | /* xgettext:c-format */ |
174d0a74 | 8468 | (_("%H: %s references " |
b140b010 AM |
8469 | "optimized away TOC entry\n"), |
8470 | ibfd, sec, rel->r_offset, | |
8471 | ppc64_elf_howto_table[r_type]->name); | |
8472 | bfd_set_error (bfd_error_bad_value); | |
8473 | goto error_ret; | |
ba761f19 AM |
8474 | } |
8475 | rel->r_addend = tocrel->r_addend; | |
8476 | elf_section_data (sec)->relocs = relstart; | |
8477 | continue; | |
8478 | } | |
8479 | ||
8480 | if (h != NULL || sym->st_value != 0) | |
8481 | continue; | |
854b41e7 AM |
8482 | |
8483 | rel->r_addend -= skip[val >> 3]; | |
8484 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8485 | } |
854b41e7 AM |
8486 | |
8487 | if (elf_section_data (sec)->relocs != relstart) | |
8488 | free (relstart); | |
c5614fa4 AM |
8489 | } |
8490 | ||
8491 | /* We shouldn't have local or global symbols defined in the TOC, | |
8492 | but handle them anyway. */ | |
df22d223 AM |
8493 | if (local_syms != NULL) |
8494 | for (sym = local_syms; | |
8495 | sym < local_syms + symtab_hdr->sh_info; | |
8496 | ++sym) | |
8497 | if (sym->st_value != 0 | |
8498 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8499 | { | |
8500 | unsigned long i; | |
854b41e7 | 8501 | |
df22d223 AM |
8502 | if (sym->st_value > toc->rawsize) |
8503 | i = toc->rawsize >> 3; | |
8504 | else | |
8505 | i = sym->st_value >> 3; | |
854b41e7 | 8506 | |
df22d223 AM |
8507 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8508 | { | |
8509 | if (local_toc_syms) | |
4eca0228 | 8510 | _bfd_error_handler |
df22d223 AM |
8511 | (_("%s defined on removed toc entry"), |
8512 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8513 | do | |
8514 | ++i; | |
8515 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8516 | sym->st_value = (bfd_vma) i << 3; | |
8517 | } | |
d62b3684 | 8518 | |
df22d223 AM |
8519 | sym->st_value -= skip[i]; |
8520 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8521 | } | |
c5614fa4 | 8522 | |
854b41e7 | 8523 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8524 | if (toc_inf.global_toc_syms) |
8525 | { | |
8526 | toc_inf.toc = toc; | |
8527 | toc_inf.skip = skip; | |
8528 | toc_inf.global_toc_syms = FALSE; | |
8529 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8530 | &toc_inf); | |
8531 | } | |
854b41e7 AM |
8532 | |
8533 | if (toc->reloc_count != 0) | |
8534 | { | |
d4730f92 | 8535 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8536 | Elf_Internal_Rela *wrel; |
8537 | bfd_size_type sz; | |
8538 | ||
854b41e7 | 8539 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
8540 | if (toc_relocs == NULL) |
8541 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8542 | info->keep_memory); | |
8543 | if (toc_relocs == NULL) | |
8544 | goto error_ret; | |
8545 | ||
425b145b AM |
8546 | wrel = toc_relocs; |
8547 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
8548 | if ((skip[rel->r_offset >> 3] |
8549 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8550 | { |
8551 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8552 | wrel->r_info = rel->r_info; | |
8553 | wrel->r_addend = rel->r_addend; | |
8554 | ++wrel; | |
8555 | } | |
8556 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
8557 | &local_syms, NULL, NULL)) | |
8558 | goto error_ret; | |
8559 | ||
425b145b AM |
8560 | elf_section_data (toc)->relocs = toc_relocs; |
8561 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
8562 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
8563 | sz = rel_hdr->sh_entsize; | |
8564 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 8565 | } |
c5614fa4 | 8566 | } |
28be611c AM |
8567 | else if (toc_relocs != NULL |
8568 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 8569 | free (toc_relocs); |
c5614fa4 AM |
8570 | |
8571 | if (local_syms != NULL | |
8572 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8573 | { | |
8574 | if (!info->keep_memory) | |
8575 | free (local_syms); | |
8576 | else | |
8577 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8578 | } | |
8579 | free (skip); | |
8580 | } | |
8581 | ||
8582 | return TRUE; | |
8583 | } | |
8584 | ||
1bbe0902 AM |
8585 | /* Return true iff input section I references the TOC using |
8586 | instructions limited to +/-32k offsets. */ | |
8587 | ||
8588 | bfd_boolean | |
8589 | ppc64_elf_has_small_toc_reloc (asection *i) | |
8590 | { | |
8591 | return (is_ppc64_elf (i->owner) | |
8592 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
8593 | } | |
8594 | ||
927be08e AM |
8595 | /* Allocate space for one GOT entry. */ |
8596 | ||
8597 | static void | |
8598 | allocate_got (struct elf_link_hash_entry *h, | |
8599 | struct bfd_link_info *info, | |
8600 | struct got_entry *gent) | |
8601 | { | |
8602 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
8603 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
8604 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
8605 | ? 16 : 8); | |
8606 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
8607 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
8608 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
8609 | ||
8610 | gent->got.offset = got->size; | |
8611 | got->size += entsize; | |
8612 | ||
19e08130 | 8613 | if (h->type == STT_GNU_IFUNC) |
927be08e | 8614 | { |
33e44f2e | 8615 | htab->elf.irelplt->size += rentsize; |
19e08130 | 8616 | htab->got_reli_size += rentsize; |
927be08e | 8617 | } |
f15d0b54 AM |
8618 | else if (((bfd_link_pic (info) |
8619 | && !((gent->tls_type & TLS_TPREL) != 0 | |
8620 | && bfd_link_executable (info) | |
8621 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
8622 | || (htab->elf.dynamic_sections_created |
8623 | && h->dynindx != -1 | |
8624 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 8625 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 8626 | { |
19e08130 | 8627 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 8628 | relgot->size += rentsize; |
927be08e AM |
8629 | } |
8630 | } | |
8631 | ||
7865406b AM |
8632 | /* This function merges got entries in the same toc group. */ |
8633 | ||
8634 | static void | |
8635 | merge_got_entries (struct got_entry **pent) | |
8636 | { | |
8637 | struct got_entry *ent, *ent2; | |
8638 | ||
8639 | for (ent = *pent; ent != NULL; ent = ent->next) | |
8640 | if (!ent->is_indirect) | |
8641 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
8642 | if (!ent2->is_indirect | |
8643 | && ent2->addend == ent->addend | |
8644 | && ent2->tls_type == ent->tls_type | |
8645 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
8646 | { | |
8647 | ent2->is_indirect = TRUE; | |
8648 | ent2->got.ent = ent; | |
8649 | } | |
8650 | } | |
8651 | ||
46434633 | 8652 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
8653 | |
8654 | static bfd_boolean | |
46434633 AM |
8655 | ensure_undef_dynamic (struct bfd_link_info *info, |
8656 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
8657 | { |
8658 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
8659 | ||
8660 | if (htab->dynamic_sections_created | |
46434633 AM |
8661 | && ((info->dynamic_undefined_weak != 0 |
8662 | && h->root.type == bfd_link_hash_undefweak) | |
8663 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
8664 | && h->dynindx == -1 |
8665 | && !h->forced_local | |
8666 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
8667 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
8668 | return TRUE; | |
8669 | } | |
8670 | ||
65f38f15 AM |
8671 | /* Allocate space in .plt, .got and associated reloc sections for |
8672 | dynamic relocs. */ | |
5bd4f169 | 8673 | |
b34976b6 | 8674 | static bfd_boolean |
4ce794b7 | 8675 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 8676 | { |
65f38f15 AM |
8677 | struct bfd_link_info *info; |
8678 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 8679 | asection *s; |
65f38f15 | 8680 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 8681 | struct got_entry **pgent, *gent; |
5bd4f169 | 8682 | |
e92d460e | 8683 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 8684 | return TRUE; |
5bd4f169 | 8685 | |
65f38f15 AM |
8686 | info = (struct bfd_link_info *) inf; |
8687 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8688 | if (htab == NULL) |
8689 | return FALSE; | |
5bd4f169 | 8690 | |
951fd09b AM |
8691 | eh = (struct ppc_link_hash_entry *) h; |
8692 | /* Run through the TLS GD got entries first if we're changing them | |
8693 | to TPREL. */ | |
37da22e5 | 8694 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
8695 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8696 | if (gent->got.refcount > 0 | |
8697 | && (gent->tls_type & TLS_GD) != 0) | |
8698 | { | |
8699 | /* This was a GD entry that has been converted to TPREL. If | |
8700 | there happens to be a TPREL entry we can use that one. */ | |
8701 | struct got_entry *ent; | |
8702 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
8703 | if (ent->got.refcount > 0 | |
8704 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
8705 | && ent->addend == gent->addend |
8706 | && ent->owner == gent->owner) | |
951fd09b AM |
8707 | { |
8708 | gent->got.refcount = 0; | |
8709 | break; | |
8710 | } | |
8711 | ||
8712 | /* If not, then we'll be using our own TPREL entry. */ | |
8713 | if (gent->got.refcount != 0) | |
8714 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
8715 | } | |
8716 | ||
7865406b AM |
8717 | /* Remove any list entry that won't generate a word in the GOT before |
8718 | we call merge_got_entries. Otherwise we risk merging to empty | |
8719 | entries. */ | |
0b8bcf0d AM |
8720 | pgent = &h->got.glist; |
8721 | while ((gent = *pgent) != NULL) | |
411e1bfb | 8722 | if (gent->got.refcount > 0) |
7865406b AM |
8723 | { |
8724 | if ((gent->tls_type & TLS_LD) != 0 | |
8725 | && !h->def_dynamic) | |
8726 | { | |
8727 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
8728 | *pgent = gent->next; | |
8729 | } | |
8730 | else | |
8731 | pgent = &gent->next; | |
8732 | } | |
8733 | else | |
8734 | *pgent = gent->next; | |
8735 | ||
8736 | if (!htab->do_multi_toc) | |
8737 | merge_got_entries (&h->got.glist); | |
8738 | ||
8739 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
8740 | if (!gent->is_indirect) | |
411e1bfb | 8741 | { |
46434633 AM |
8742 | /* Make sure this symbol is output as a dynamic symbol. */ |
8743 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 8744 | return FALSE; |
65f38f15 | 8745 | |
0c8d6e5c | 8746 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 8747 | abort (); |
0ffa91dd | 8748 | |
927be08e | 8749 | allocate_got (h, info, gent); |
411e1bfb | 8750 | } |
65f38f15 | 8751 | |
954b63d4 AM |
8752 | /* If no dynamic sections we can't have dynamic relocs, except for |
8753 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
8754 | if (!htab->elf.dynamic_sections_created |
8755 | && h->type != STT_GNU_IFUNC) | |
8756 | eh->dyn_relocs = NULL; | |
8757 | ||
529fe20e AM |
8758 | /* Discard relocs on undefined symbols that must be local. */ |
8759 | else if (h->root.type == bfd_link_hash_undefined | |
8760 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8761 | eh->dyn_relocs = NULL; | |
8762 | ||
954b63d4 AM |
8763 | /* Also discard relocs on undefined weak syms with non-default |
8764 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 8765 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
8766 | eh->dyn_relocs = NULL; |
8767 | ||
8a2058b5 | 8768 | if (eh->dyn_relocs != NULL) |
65f38f15 | 8769 | { |
8a2058b5 AM |
8770 | struct elf_dyn_relocs *p, **pp; |
8771 | ||
57e7d118 AM |
8772 | /* In the shared -Bsymbolic case, discard space allocated for |
8773 | dynamic pc-relative relocs against symbols which turn out to | |
8774 | be defined in regular objects. For the normal shared case, | |
8775 | discard space for relocs that have become local due to symbol | |
8776 | visibility changes. */ | |
8777 | ||
8778 | if (bfd_link_pic (info)) | |
65f38f15 | 8779 | { |
57e7d118 AM |
8780 | /* Relocs that use pc_count are those that appear on a call |
8781 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
8782 | can be generated via assembly. We want calls to | |
8783 | protected symbols to resolve directly to the function | |
8784 | rather than going via the plt. If people want function | |
8785 | pointer comparisons to work as expected then they should | |
8786 | avoid writing weird assembly. */ | |
8787 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
8788 | { | |
57e7d118 AM |
8789 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
8790 | { | |
8791 | p->count -= p->pc_count; | |
8792 | p->pc_count = 0; | |
8793 | if (p->count == 0) | |
8794 | *pp = p->next; | |
8795 | else | |
8796 | pp = &p->next; | |
8797 | } | |
8798 | } | |
65f38f15 | 8799 | |
954b63d4 | 8800 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 8801 | { |
46434633 AM |
8802 | /* Make sure this symbol is output as a dynamic symbol. */ |
8803 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 8804 | return FALSE; |
5bd4f169 | 8805 | } |
65f38f15 | 8806 | } |
529fe20e | 8807 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 8808 | { |
8a2058b5 | 8809 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
8810 | symbols which turn out to need copy relocs or are not |
8811 | dynamic. */ | |
529fe20e AM |
8812 | if (h->dynamic_adjusted |
8813 | && !h->def_regular | |
8814 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 8815 | { |
46434633 AM |
8816 | /* Make sure this symbol is output as a dynamic symbol. */ |
8817 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 8818 | return FALSE; |
dfbb6ac9 | 8819 | |
f0158f44 AM |
8820 | if (h->dynindx == -1) |
8821 | eh->dyn_relocs = NULL; | |
8822 | } | |
8823 | else | |
8a2058b5 | 8824 | eh->dyn_relocs = NULL; |
57e7d118 AM |
8825 | } |
8826 | ||
8827 | /* Finally, allocate space. */ | |
8828 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8829 | { | |
8830 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
8831 | if (eh->elf.type == STT_GNU_IFUNC) | |
8832 | sreloc = htab->elf.irelplt; | |
8833 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 8834 | } |
65f38f15 | 8835 | } |
57e7d118 | 8836 | |
2d7ad24e AM |
8837 | /* We might need a PLT entry when the symbol |
8838 | a) is dynamic, or | |
8839 | b) is an ifunc, or | |
8840 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
8841 | d) has plt16 relocs and we are linking statically. */ | |
8842 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
8843 | || h->type == STT_GNU_IFUNC | |
8844 | || (h->needs_plt && h->dynamic_adjusted) | |
8845 | || (h->needs_plt | |
8846 | && h->def_regular | |
8847 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 8848 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
8849 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
8850 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 8851 | { |
57e7d118 AM |
8852 | struct plt_entry *pent; |
8853 | bfd_boolean doneone = FALSE; | |
8854 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
8855 | if (pent->plt.refcount > 0) | |
8856 | { | |
8857 | if (!htab->elf.dynamic_sections_created | |
8858 | || h->dynindx == -1) | |
8859 | { | |
2d7ad24e AM |
8860 | if (h->type == STT_GNU_IFUNC) |
8861 | { | |
8862 | s = htab->elf.iplt; | |
8863 | pent->plt.offset = s->size; | |
8864 | s->size += PLT_ENTRY_SIZE (htab); | |
8865 | s = htab->elf.irelplt; | |
8866 | } | |
8867 | else | |
8868 | { | |
8869 | s = htab->pltlocal; | |
8870 | pent->plt.offset = s->size; | |
8871 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
8872 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
8873 | } | |
57e7d118 AM |
8874 | } |
8875 | else | |
8876 | { | |
8877 | /* If this is the first .plt entry, make room for the special | |
8878 | first entry. */ | |
8879 | s = htab->elf.splt; | |
8880 | if (s->size == 0) | |
8881 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 8882 | |
57e7d118 | 8883 | pent->plt.offset = s->size; |
65f38f15 | 8884 | |
57e7d118 AM |
8885 | /* Make room for this entry. */ |
8886 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 8887 | |
57e7d118 AM |
8888 | /* Make room for the .glink code. */ |
8889 | s = htab->glink; | |
8890 | if (s->size == 0) | |
9e390558 | 8891 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
8892 | if (htab->opd_abi) |
8893 | { | |
8894 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 8895 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
8896 | s->size += 4; |
8897 | s->size += 2*4; | |
8898 | } | |
8899 | else | |
8900 | s->size += 4; | |
65f38f15 | 8901 | |
57e7d118 AM |
8902 | /* We also need to make an entry in the .rela.plt section. */ |
8903 | s = htab->elf.srelplt; | |
8904 | } | |
2d7ad24e AM |
8905 | if (s != NULL) |
8906 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
8907 | doneone = TRUE; |
8908 | } | |
8909 | else | |
8910 | pent->plt.offset = (bfd_vma) -1; | |
8911 | if (!doneone) | |
8912 | { | |
8913 | h->plt.plist = NULL; | |
8914 | h->needs_plt = 0; | |
8915 | } | |
65f38f15 | 8916 | } |
57e7d118 | 8917 | else |
65f38f15 | 8918 | { |
57e7d118 AM |
8919 | h->plt.plist = NULL; |
8920 | h->needs_plt = 0; | |
65f38f15 AM |
8921 | } |
8922 | ||
b34976b6 | 8923 | return TRUE; |
65f38f15 AM |
8924 | } |
8925 | ||
9e390558 AM |
8926 | #define PPC_LO(v) ((v) & 0xffff) |
8927 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8928 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8929 | ||
a345bc8d AM |
8930 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
8931 | to set up space for global entry stubs. These are put in glink, | |
8932 | after the branch table. */ | |
65f38f15 | 8933 | |
b34976b6 | 8934 | static bfd_boolean |
a345bc8d | 8935 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 8936 | { |
a345bc8d AM |
8937 | struct bfd_link_info *info; |
8938 | struct ppc_link_hash_table *htab; | |
8939 | struct plt_entry *pent; | |
9e390558 | 8940 | asection *s, *plt; |
65f38f15 | 8941 | |
a345bc8d AM |
8942 | if (h->root.type == bfd_link_hash_indirect) |
8943 | return TRUE; | |
65f38f15 | 8944 | |
a345bc8d AM |
8945 | if (!h->pointer_equality_needed) |
8946 | return TRUE; | |
65f38f15 | 8947 | |
a345bc8d AM |
8948 | if (h->def_regular) |
8949 | return TRUE; | |
65f38f15 | 8950 | |
a345bc8d AM |
8951 | info = inf; |
8952 | htab = ppc_hash_table (info); | |
8953 | if (htab == NULL) | |
8954 | return FALSE; | |
8955 | ||
9e390558 AM |
8956 | s = htab->global_entry; |
8957 | plt = htab->elf.splt; | |
a345bc8d AM |
8958 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
8959 | if (pent->plt.offset != (bfd_vma) -1 | |
8960 | && pent->addend == 0) | |
8961 | { | |
afe397ea AM |
8962 | /* For ELFv2, if this symbol is not defined in a regular file |
8963 | and we are not generating a shared library or pie, then we | |
8964 | need to define the symbol in the executable on a call stub. | |
8965 | This is to avoid text relocations. */ | |
9e390558 AM |
8966 | bfd_vma off, stub_align, stub_off, stub_size; |
8967 | unsigned int align_power; | |
8968 | ||
8969 | stub_size = 16; | |
8970 | stub_off = s->size; | |
8971 | if (htab->params->plt_stub_align >= 0) | |
8972 | align_power = htab->params->plt_stub_align; | |
8973 | else | |
8974 | align_power = -htab->params->plt_stub_align; | |
8975 | /* Setting section alignment is delayed until we know it is | |
8976 | non-empty. Otherwise the .text output section will be | |
8977 | aligned at least to plt_stub_align even when no global | |
8978 | entry stubs are needed. */ | |
8979 | if (s->alignment_power < align_power) | |
8980 | s->alignment_power = align_power; | |
8981 | stub_align = (bfd_vma) 1 << align_power; | |
8982 | if (htab->params->plt_stub_align >= 0 | |
8983 | || ((((stub_off + stub_size - 1) & -stub_align) | |
8984 | - (stub_off & -stub_align)) | |
8985 | > ((stub_size - 1) & -stub_align))) | |
8986 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
8987 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
8988 | off -= stub_off + s->output_offset + s->output_section->vma; | |
8989 | /* Note that for --plt-stub-align negative we have a possible | |
8990 | dependency between stub offset and size. Break that | |
8991 | dependency by assuming the max stub size when calculating | |
8992 | the stub offset. */ | |
8993 | if (PPC_HA (off) == 0) | |
8994 | stub_size -= 4; | |
8a2058b5 | 8995 | h->root.type = bfd_link_hash_defined; |
afe397ea | 8996 | h->root.u.def.section = s; |
9e390558 AM |
8997 | h->root.u.def.value = stub_off; |
8998 | s->size = stub_off + stub_size; | |
a345bc8d AM |
8999 | break; |
9000 | } | |
9001 | return TRUE; | |
9002 | } | |
9003 | ||
9004 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9005 | read-only sections. */ | |
9006 | ||
9007 | static bfd_boolean | |
98bbb1b8 | 9008 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 9009 | { |
98bbb1b8 AM |
9010 | asection *sec; |
9011 | ||
a345bc8d AM |
9012 | if (h->root.type == bfd_link_hash_indirect) |
9013 | return TRUE; | |
9014 | ||
98bbb1b8 AM |
9015 | sec = readonly_dynrelocs (h); |
9016 | if (sec != NULL) | |
a345bc8d | 9017 | { |
98bbb1b8 AM |
9018 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
9019 | ||
9020 | info->flags |= DF_TEXTREL; | |
2cdcc330 AM |
9021 | info->callbacks->minfo (_("%pB: dynamic relocation against `%pT'" |
9022 | " in read-only section `%pA'\n"), | |
9023 | sec->owner, h->root.root.string, sec); | |
a345bc8d AM |
9024 | |
9025 | /* Not an error, just cut short the traversal. */ | |
9026 | return FALSE; | |
65f38f15 | 9027 | } |
b34976b6 | 9028 | return TRUE; |
65f38f15 AM |
9029 | } |
9030 | ||
9031 | /* Set the sizes of the dynamic sections. */ | |
9032 | ||
b34976b6 | 9033 | static bfd_boolean |
ee67d69a | 9034 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9035 | struct bfd_link_info *info) |
65f38f15 AM |
9036 | { |
9037 | struct ppc_link_hash_table *htab; | |
9038 | bfd *dynobj; | |
9039 | asection *s; | |
b34976b6 | 9040 | bfd_boolean relocs; |
65f38f15 | 9041 | bfd *ibfd; |
7865406b | 9042 | struct got_entry *first_tlsld; |
65f38f15 AM |
9043 | |
9044 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9045 | if (htab == NULL) |
9046 | return FALSE; | |
9047 | ||
65f38f15 AM |
9048 | dynobj = htab->elf.dynobj; |
9049 | if (dynobj == NULL) | |
9050 | abort (); | |
9051 | ||
9052 | if (htab->elf.dynamic_sections_created) | |
9053 | { | |
9054 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9055 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9056 | { |
3d4d4302 | 9057 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9058 | if (s == NULL) |
9059 | abort (); | |
eea6121a | 9060 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9061 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9062 | } | |
9063 | } | |
9064 | ||
9065 | /* Set up .got offsets for local syms, and space for local dynamic | |
9066 | relocs. */ | |
c72f2fb2 | 9067 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9068 | { |
411e1bfb AM |
9069 | struct got_entry **lgot_ents; |
9070 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9071 | struct plt_entry **local_plt; |
9072 | struct plt_entry **end_local_plt; | |
f961d9dd | 9073 | unsigned char *lgot_masks; |
65f38f15 AM |
9074 | bfd_size_type locsymcount; |
9075 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9076 | |
0c8d6e5c | 9077 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9078 | continue; |
9079 | ||
9080 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9081 | { | |
19e08130 | 9082 | struct ppc_dyn_relocs *p; |
65f38f15 | 9083 | |
6edfbbad | 9084 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9085 | { |
ec338859 AM |
9086 | if (!bfd_is_abs_section (p->sec) |
9087 | && bfd_is_abs_section (p->sec->output_section)) | |
9088 | { | |
9089 | /* Input section has been discarded, either because | |
9090 | it is a copy of a linkonce section or due to | |
9091 | linker script /DISCARD/, so we'll be discarding | |
9092 | the relocs too. */ | |
9093 | } | |
248866a8 | 9094 | else if (p->count != 0) |
ec338859 | 9095 | { |
19e08130 AM |
9096 | asection *srel = elf_section_data (p->sec)->sreloc; |
9097 | if (p->ifunc) | |
33e44f2e | 9098 | srel = htab->elf.irelplt; |
eea6121a | 9099 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9100 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9101 | info->flags |= DF_TEXTREL; | |
ec338859 | 9102 | } |
65f38f15 AM |
9103 | } |
9104 | } | |
9105 | ||
411e1bfb AM |
9106 | lgot_ents = elf_local_got_ents (ibfd); |
9107 | if (!lgot_ents) | |
65f38f15 AM |
9108 | continue; |
9109 | ||
0ffa91dd | 9110 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9111 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9112 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9113 | local_plt = (struct plt_entry **) end_lgot_ents; |
9114 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9115 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9116 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9117 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9118 | { |
0b8bcf0d | 9119 | struct got_entry **pent, *ent; |
411e1bfb | 9120 | |
0b8bcf0d AM |
9121 | pent = lgot_ents; |
9122 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9123 | if (ent->got.refcount > 0) |
9124 | { | |
e7b938ca | 9125 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9126 | { |
927be08e | 9127 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9128 | *pent = ent->next; |
411e1bfb AM |
9129 | } |
9130 | else | |
9131 | { | |
19e08130 AM |
9132 | unsigned int ent_size = 8; |
9133 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9134 | ||
eea6121a | 9135 | ent->got.offset = s->size; |
e7b938ca | 9136 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9137 | { |
19e08130 AM |
9138 | ent_size *= 2; |
9139 | rel_size *= 2; | |
9140 | } | |
9141 | s->size += ent_size; | |
37da22e5 | 9142 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 9143 | { |
33e44f2e | 9144 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9145 | htab->got_reli_size += rel_size; |
9146 | } | |
f15d0b54 AM |
9147 | else if (bfd_link_pic (info) |
9148 | && !((ent->tls_type & TLS_TPREL) != 0 | |
9149 | && bfd_link_executable (info))) | |
19e08130 AM |
9150 | { |
9151 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9152 | srel->size += rel_size; | |
927be08e | 9153 | } |
0b8bcf0d | 9154 | pent = &ent->next; |
411e1bfb AM |
9155 | } |
9156 | } | |
9157 | else | |
0b8bcf0d | 9158 | *pent = ent->next; |
65f38f15 | 9159 | } |
e054468f | 9160 | |
2d7ad24e AM |
9161 | /* Allocate space for plt calls to local syms. */ |
9162 | lgot_masks = (unsigned char *) end_local_plt; | |
9163 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
9164 | { |
9165 | struct plt_entry *ent; | |
9166 | ||
9167 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9168 | if (ent->plt.refcount > 0) | |
9169 | { | |
2d7ad24e AM |
9170 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
9171 | { | |
9172 | s = htab->elf.iplt; | |
9173 | ent->plt.offset = s->size; | |
9174 | s->size += PLT_ENTRY_SIZE (htab); | |
9175 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
9176 | } | |
3e04d765 AM |
9177 | else if (htab->can_convert_all_inline_plt |
9178 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
9179 | ent->plt.offset = (bfd_vma) -1; |
9180 | else | |
9181 | { | |
9182 | s = htab->pltlocal; | |
9183 | ent->plt.offset = s->size; | |
9184 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9185 | if (bfd_link_pic (info)) | |
9186 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
9187 | } | |
e054468f AM |
9188 | } |
9189 | else | |
9190 | ent->plt.offset = (bfd_vma) -1; | |
9191 | } | |
65f38f15 AM |
9192 | } |
9193 | ||
9194 | /* Allocate global sym .plt and .got entries, and space for global | |
9195 | sym dynamic relocs. */ | |
4ce794b7 | 9196 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 9197 | |
0e1862bb | 9198 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 9199 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 9200 | |
7865406b | 9201 | first_tlsld = NULL; |
c72f2fb2 | 9202 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 9203 | { |
7865406b AM |
9204 | struct got_entry *ent; |
9205 | ||
0c8d6e5c | 9206 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9207 | continue; |
9208 | ||
7865406b AM |
9209 | ent = ppc64_tlsld_got (ibfd); |
9210 | if (ent->got.refcount > 0) | |
102890f0 | 9211 | { |
7865406b | 9212 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9213 | { |
7865406b AM |
9214 | ent->is_indirect = TRUE; |
9215 | ent->got.ent = first_tlsld; | |
9216 | } | |
9217 | else | |
9218 | { | |
9219 | if (first_tlsld == NULL) | |
9220 | first_tlsld = ent; | |
9221 | s = ppc64_elf_tdata (ibfd)->got; | |
9222 | ent->got.offset = s->size; | |
9223 | ent->owner = ibfd; | |
9224 | s->size += 16; | |
0e1862bb | 9225 | if (bfd_link_pic (info)) |
7865406b AM |
9226 | { |
9227 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9228 | srel->size += sizeof (Elf64_External_Rela); | |
9229 | } | |
102890f0 AM |
9230 | } |
9231 | } | |
9232 | else | |
7865406b | 9233 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9234 | } |
9235 | ||
65f38f15 AM |
9236 | /* We now have determined the sizes of the various dynamic sections. |
9237 | Allocate memory for them. */ | |
b34976b6 | 9238 | relocs = FALSE; |
65f38f15 AM |
9239 | for (s = dynobj->sections; s != NULL; s = s->next) |
9240 | { | |
9241 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9242 | continue; | |
9243 | ||
4ce794b7 | 9244 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9245 | /* These haven't been allocated yet; don't strip. */ |
9246 | continue; | |
33e44f2e AM |
9247 | else if (s == htab->elf.sgot |
9248 | || s == htab->elf.splt | |
9249 | || s == htab->elf.iplt | |
2d7ad24e | 9250 | || s == htab->pltlocal |
c456f082 | 9251 | || s == htab->glink |
9e390558 | 9252 | || s == htab->global_entry |
5474d94f AM |
9253 | || s == htab->elf.sdynbss |
9254 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
9255 | { |
9256 | /* Strip this section if we don't need it; see the | |
9257 | comment below. */ | |
5bd4f169 | 9258 | } |
58d180e8 AM |
9259 | else if (s == htab->glink_eh_frame) |
9260 | { | |
9261 | if (!bfd_is_abs_section (s->output_section)) | |
9262 | /* Not sized yet. */ | |
9263 | continue; | |
9264 | } | |
70cc837d | 9265 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9266 | { |
c456f082 | 9267 | if (s->size != 0) |
5bd4f169 | 9268 | { |
33e44f2e | 9269 | if (s != htab->elf.srelplt) |
b34976b6 | 9270 | relocs = TRUE; |
5bd4f169 AM |
9271 | |
9272 | /* We use the reloc_count field as a counter if we need | |
9273 | to copy relocs into the output file. */ | |
9274 | s->reloc_count = 0; | |
9275 | } | |
9276 | } | |
65f38f15 | 9277 | else |
5bd4f169 AM |
9278 | { |
9279 | /* It's not one of our sections, so don't allocate space. */ | |
9280 | continue; | |
9281 | } | |
9282 | ||
eea6121a | 9283 | if (s->size == 0) |
5bd4f169 | 9284 | { |
c456f082 AM |
9285 | /* If we don't need this section, strip it from the |
9286 | output file. This is mostly to handle .rela.bss and | |
9287 | .rela.plt. We must create both sections in | |
9288 | create_dynamic_sections, because they must be created | |
9289 | before the linker maps input sections to output | |
9290 | sections. The linker does that before | |
9291 | adjust_dynamic_symbol is called, and it is that | |
9292 | function which decides whether anything needs to go | |
9293 | into these sections. */ | |
8423293d | 9294 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9295 | continue; |
9296 | } | |
9297 | ||
06bcf541 AM |
9298 | if (bfd_is_abs_section (s->output_section)) |
9299 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
9300 | s->name); | |
9301 | ||
c456f082 | 9302 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9303 | continue; |
9304 | ||
65f38f15 AM |
9305 | /* Allocate memory for the section contents. We use bfd_zalloc |
9306 | here in case unused entries are not reclaimed before the | |
9307 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9308 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9309 | sections instead of garbage. | |
9310 | We also rely on the section contents being zero when writing | |
5474d94f | 9311 | the GOT and .dynrelro. */ |
eea6121a | 9312 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9313 | if (s->contents == NULL) |
b34976b6 | 9314 | return FALSE; |
5bd4f169 AM |
9315 | } |
9316 | ||
c72f2fb2 | 9317 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 9318 | { |
0c8d6e5c | 9319 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9320 | continue; |
9321 | ||
e717da7e | 9322 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9323 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9324 | { |
eea6121a | 9325 | if (s->size == 0) |
8423293d | 9326 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9327 | else |
9328 | { | |
eea6121a | 9329 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9330 | if (s->contents == NULL) |
9331 | return FALSE; | |
9332 | } | |
9333 | } | |
9334 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9335 | if (s != NULL) | |
9336 | { | |
eea6121a | 9337 | if (s->size == 0) |
8423293d | 9338 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9339 | else |
9340 | { | |
eea6121a | 9341 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9342 | if (s->contents == NULL) |
9343 | return FALSE; | |
9344 | relocs = TRUE; | |
9345 | s->reloc_count = 0; | |
9346 | } | |
9347 | } | |
9348 | } | |
9349 | ||
e86ce104 | 9350 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9351 | { |
e8910a83 AM |
9352 | bfd_boolean tls_opt; |
9353 | ||
5bd4f169 AM |
9354 | /* Add some entries to the .dynamic section. We fill in the |
9355 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9356 | must add the entries now so that we get the correct size for | |
9357 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9358 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9359 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9360 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9361 | |
0e1862bb | 9362 | if (bfd_link_executable (info)) |
5bd4f169 | 9363 | { |
dc810e39 | 9364 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9365 | return FALSE; |
5bd4f169 AM |
9366 | } |
9367 | ||
33e44f2e | 9368 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 9369 | { |
dc810e39 AM |
9370 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9371 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9372 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9373 | || !add_dynamic_entry (DT_JMPREL, 0) |
9374 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9375 | return FALSE; |
5bd4f169 AM |
9376 | } |
9377 | ||
ee67d69a | 9378 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
9379 | { |
9380 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9381 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9382 | return FALSE; |
19397422 AM |
9383 | } |
9384 | ||
7c9cf415 | 9385 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
9386 | && htab->tls_get_addr_fd != NULL |
9387 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
9388 | if (tls_opt || !htab->opd_abi) | |
9389 | { | |
9390 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
9391 | return FALSE; | |
9392 | } | |
a7f2871e | 9393 | |
5bd4f169 AM |
9394 | if (relocs) |
9395 | { | |
dc810e39 AM |
9396 | if (!add_dynamic_entry (DT_RELA, 0) |
9397 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9398 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9399 | return FALSE; |
5bd4f169 | 9400 | |
65f38f15 AM |
9401 | /* If any dynamic relocs apply to a read-only section, |
9402 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9403 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 9404 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 9405 | |
65f38f15 | 9406 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9407 | { |
65f38f15 | 9408 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9409 | return FALSE; |
5bd4f169 | 9410 | } |
5bd4f169 | 9411 | } |
5bd4f169 | 9412 | } |
65f38f15 | 9413 | #undef add_dynamic_entry |
5bd4f169 | 9414 | |
b34976b6 | 9415 | return TRUE; |
5bd4f169 AM |
9416 | } |
9417 | ||
a345bc8d AM |
9418 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
9419 | ||
9420 | static bfd_boolean | |
9421 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
9422 | { | |
9423 | if (h->plt.plist != NULL | |
9424 | && !h->def_regular | |
9425 | && !h->pointer_equality_needed) | |
9426 | return FALSE; | |
9427 | ||
9428 | return _bfd_elf_hash_symbol (h); | |
9429 | } | |
9430 | ||
721956f4 | 9431 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9432 | |
4ce794b7 AM |
9433 | static inline enum ppc_stub_type |
9434 | ppc_type_of_stub (asection *input_sec, | |
9435 | const Elf_Internal_Rela *rel, | |
9436 | struct ppc_link_hash_entry **hash, | |
e054468f | 9437 | struct plt_entry **plt_ent, |
6911b7dc AM |
9438 | bfd_vma destination, |
9439 | unsigned long local_off) | |
5bd4f169 | 9440 | { |
721956f4 AM |
9441 | struct ppc_link_hash_entry *h = *hash; |
9442 | bfd_vma location; | |
9443 | bfd_vma branch_offset; | |
9444 | bfd_vma max_branch_offset; | |
4ce794b7 | 9445 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9446 | |
721956f4 AM |
9447 | if (h != NULL) |
9448 | { | |
e054468f | 9449 | struct plt_entry *ent; |
7fe2b9a6 | 9450 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9451 | if (h->oh != NULL |
9452 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9453 | { |
9454 | fdh = ppc_follow_link (h->oh); | |
9455 | *hash = fdh; | |
9456 | } | |
8387904d | 9457 | |
e054468f AM |
9458 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9459 | if (ent->addend == rel->r_addend | |
9460 | && ent->plt.offset != (bfd_vma) -1) | |
9461 | { | |
e054468f AM |
9462 | *plt_ent = ent; |
9463 | return ppc_stub_plt_call; | |
9464 | } | |
5bd4f169 | 9465 | |
7fe2b9a6 AM |
9466 | /* Here, we know we don't have a plt entry. If we don't have a |
9467 | either a defined function descriptor or a defined entry symbol | |
9468 | in a regular object file, then it is pointless trying to make | |
9469 | any other type of stub. */ | |
854b41e7 AM |
9470 | if (!is_static_defined (&fdh->elf) |
9471 | && !is_static_defined (&h->elf)) | |
721956f4 | 9472 | return ppc_stub_none; |
5d1634d7 | 9473 | } |
e054468f AM |
9474 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
9475 | { | |
9476 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
9477 | struct plt_entry **local_plt = (struct plt_entry **) | |
9478 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
9479 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
9480 | ||
9481 | if (local_plt[r_symndx] != NULL) | |
9482 | { | |
9483 | struct plt_entry *ent; | |
9484 | ||
9485 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
9486 | if (ent->addend == rel->r_addend | |
9487 | && ent->plt.offset != (bfd_vma) -1) | |
9488 | { | |
9489 | *plt_ent = ent; | |
9490 | return ppc_stub_plt_call; | |
9491 | } | |
9492 | } | |
9493 | } | |
5d1634d7 | 9494 | |
721956f4 AM |
9495 | /* Determine where the call point is. */ |
9496 | location = (input_sec->output_offset | |
9497 | + input_sec->output_section->vma | |
9498 | + rel->r_offset); | |
5d1634d7 | 9499 | |
721956f4 AM |
9500 | branch_offset = destination - location; |
9501 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 9502 | |
721956f4 AM |
9503 | /* Determine if a long branch stub is needed. */ |
9504 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
9505 | if (r_type == R_PPC64_REL14 |
9506 | || r_type == R_PPC64_REL14_BRTAKEN | |
9507 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 9508 | max_branch_offset = 1 << 15; |
5d1634d7 | 9509 | |
6911b7dc | 9510 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
9511 | /* We need a stub. Figure out whether a long_branch or plt_branch |
9512 | is needed later. */ | |
9513 | return ppc_stub_long_branch; | |
5d1634d7 | 9514 | |
721956f4 | 9515 | return ppc_stub_none; |
5d1634d7 AM |
9516 | } |
9517 | ||
f891966f AM |
9518 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
9519 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
9520 | . mflr %r12 | |
9521 | . bcl 20,31,1f | |
9522 | .1: mflr %r11 | |
9523 | . mtlr %r12 | |
05d0e962 | 9524 | . lis %r12,xxx-1b@highest |
f891966f | 9525 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 9526 | . sldi %r12,%r12,32 |
f891966f | 9527 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 9528 | . ori %r12,%r12,xxx-1b@l |
f891966f | 9529 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
9530 | |
9531 | static bfd_byte * | |
9532 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
9533 | { | |
f891966f AM |
9534 | bfd_put_32 (abfd, MFLR_R12, p); |
9535 | p += 4; | |
9536 | bfd_put_32 (abfd, BCL_20_31, p); | |
9537 | p += 4; | |
9538 | bfd_put_32 (abfd, MFLR_R11, p); | |
9539 | p += 4; | |
9540 | bfd_put_32 (abfd, MTLR_R12, p); | |
9541 | p += 4; | |
05d0e962 AM |
9542 | if (off + 0x8000 < 0x10000) |
9543 | { | |
9544 | if (load) | |
9545 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
9546 | else | |
9547 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
9548 | p += 4; | |
9549 | } | |
9550 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
9551 | { | |
9552 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
9553 | p += 4; | |
9554 | if (load) | |
9555 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
9556 | else | |
9557 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
9558 | p += 4; | |
9559 | } | |
9560 | else | |
9561 | { | |
9562 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
9563 | { | |
9564 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
9565 | p += 4; | |
9566 | } | |
9567 | else | |
9568 | { | |
9569 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
9570 | p += 4; | |
9571 | if (((off >> 32) & 0xffff) != 0) | |
9572 | { | |
9573 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
9574 | p += 4; | |
9575 | } | |
9576 | } | |
9577 | if (((off >> 32) & 0xffffffffULL) != 0) | |
9578 | { | |
9579 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
9580 | p += 4; | |
9581 | } | |
9582 | if (PPC_HI (off) != 0) | |
9583 | { | |
9584 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
9585 | p += 4; | |
9586 | } | |
9587 | if (PPC_LO (off) != 0) | |
9588 | { | |
9589 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
9590 | p += 4; | |
9591 | } | |
9592 | if (load) | |
9593 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
9594 | else | |
9595 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
9596 | p += 4; | |
9597 | } | |
9598 | return p; | |
9599 | } | |
9600 | ||
9601 | static unsigned int | |
9602 | size_offset (bfd_vma off) | |
9603 | { | |
9604 | unsigned int size; | |
9605 | if (off + 0x8000 < 0x10000) | |
9606 | size = 4; | |
9607 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
9608 | size = 8; | |
9609 | else | |
9610 | { | |
9611 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
9612 | size = 4; | |
9613 | else | |
9614 | { | |
9615 | size = 4; | |
9616 | if (((off >> 32) & 0xffff) != 0) | |
9617 | size += 4; | |
9618 | } | |
9619 | if (((off >> 32) & 0xffffffffULL) != 0) | |
9620 | size += 4; | |
9621 | if (PPC_HI (off) != 0) | |
9622 | size += 4; | |
9623 | if (PPC_LO (off) != 0) | |
9624 | size += 4; | |
9625 | size += 4; | |
9626 | } | |
f891966f | 9627 | return size + 16; |
05d0e962 AM |
9628 | } |
9629 | ||
3d58e1fc AM |
9630 | static unsigned int |
9631 | num_relocs_for_offset (bfd_vma off) | |
9632 | { | |
9633 | unsigned int num_rel; | |
9634 | if (off + 0x8000 < 0x10000) | |
9635 | num_rel = 1; | |
9636 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
9637 | num_rel = 2; | |
9638 | else | |
9639 | { | |
9640 | num_rel = 1; | |
9641 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
9642 | && ((off >> 32) & 0xffff) != 0) | |
9643 | num_rel += 1; | |
9644 | if (PPC_HI (off) != 0) | |
9645 | num_rel += 1; | |
9646 | if (PPC_LO (off) != 0) | |
9647 | num_rel += 1; | |
9648 | } | |
9649 | return num_rel; | |
9650 | } | |
9651 | ||
9652 | static Elf_Internal_Rela * | |
9653 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
9654 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
9655 | { | |
9656 | bfd_vma relative_targ = targ - (roff - 8); | |
9657 | if (bfd_big_endian (info->output_bfd)) | |
9658 | roff += 2; | |
9659 | r->r_offset = roff; | |
9660 | r->r_addend = relative_targ + roff; | |
9661 | if (off + 0x8000 < 0x10000) | |
9662 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
9663 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
9664 | { | |
9665 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
9666 | ++r; | |
9667 | roff += 4; | |
9668 | r->r_offset = roff; | |
9669 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
9670 | r->r_addend = relative_targ + roff; | |
9671 | } | |
9672 | else | |
9673 | { | |
9674 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
9675 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
9676 | else | |
9677 | { | |
9678 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
9679 | if (((off >> 32) & 0xffff) != 0) | |
9680 | { | |
9681 | ++r; | |
9682 | roff += 4; | |
9683 | r->r_offset = roff; | |
9684 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
9685 | r->r_addend = relative_targ + roff; | |
9686 | } | |
9687 | } | |
9688 | if (((off >> 32) & 0xffffffffULL) != 0) | |
9689 | roff += 4; | |
9690 | if (PPC_HI (off) != 0) | |
9691 | { | |
9692 | ++r; | |
9693 | roff += 4; | |
9694 | r->r_offset = roff; | |
9695 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
9696 | r->r_addend = relative_targ + roff; | |
9697 | } | |
9698 | if (PPC_LO (off) != 0) | |
9699 | { | |
9700 | ++r; | |
9701 | roff += 4; | |
9702 | r->r_offset = roff; | |
9703 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
9704 | r->r_addend = relative_targ + roff; | |
9705 | } | |
9706 | } | |
9707 | return r; | |
9708 | } | |
9709 | ||
df136d64 AM |
9710 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
9711 | ||
9712 | static bfd_byte * | |
9713 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
9714 | { | |
9715 | delta /= 4; | |
9716 | if (delta < 64) | |
9717 | *eh++ = DW_CFA_advance_loc + delta; | |
9718 | else if (delta < 256) | |
9719 | { | |
9720 | *eh++ = DW_CFA_advance_loc1; | |
9721 | *eh++ = delta; | |
9722 | } | |
9723 | else if (delta < 65536) | |
9724 | { | |
9725 | *eh++ = DW_CFA_advance_loc2; | |
9726 | bfd_put_16 (abfd, delta, eh); | |
9727 | eh += 2; | |
9728 | } | |
9729 | else | |
9730 | { | |
9731 | *eh++ = DW_CFA_advance_loc4; | |
9732 | bfd_put_32 (abfd, delta, eh); | |
9733 | eh += 4; | |
9734 | } | |
9735 | return eh; | |
9736 | } | |
9737 | ||
9738 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
9739 | ||
9740 | static unsigned int | |
9741 | eh_advance_size (unsigned int delta) | |
9742 | { | |
9743 | if (delta < 64 * 4) | |
9744 | /* DW_CFA_advance_loc+[1..63]. */ | |
9745 | return 1; | |
9746 | if (delta < 256 * 4) | |
9747 | /* DW_CFA_advance_loc1, byte. */ | |
9748 | return 2; | |
9749 | if (delta < 65536 * 4) | |
9750 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
9751 | return 3; | |
9752 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
9753 | return 5; | |
9754 | } | |
9755 | ||
794e51c0 AM |
9756 | /* With power7 weakly ordered memory model, it is possible for ld.so |
9757 | to update a plt entry in one thread and have another thread see a | |
9758 | stale zero toc entry. To avoid this we need some sort of acquire | |
9759 | barrier in the call stub. One solution is to make the load of the | |
9760 | toc word seem to appear to depend on the load of the function entry | |
9761 | word. Another solution is to test for r2 being zero, and branch to | |
9762 | the appropriate glink entry if so. | |
9763 | ||
9764 | . fake dep barrier compare | |
71a39c98 AM |
9765 | . ld 12,xxx(2) ld 12,xxx(2) |
9766 | . mtctr 12 mtctr 12 | |
9767 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
9768 | . add 2,2,11 cmpldi 2,0 |
9769 | . ld 2,xxx+8(2) bnectr+ | |
9770 | . bctr b <glink_entry> | |
9771 | ||
9772 | The solution involving the compare turns out to be faster, so | |
9773 | that's what we use unless the branch won't reach. */ | |
9774 | ||
9775 | #define ALWAYS_USE_FAKE_DEP 0 | |
9776 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 9777 | |
794e51c0 AM |
9778 | static inline unsigned int |
9779 | plt_stub_size (struct ppc_link_hash_table *htab, | |
9780 | struct ppc_stub_hash_entry *stub_entry, | |
9781 | bfd_vma off) | |
9782 | { | |
05d0e962 | 9783 | unsigned size; |
b9e5796b | 9784 | |
05d0e962 AM |
9785 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
9786 | { | |
f891966f | 9787 | size = 8 + size_offset (off - 8); |
05d0e962 AM |
9788 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
9789 | size += 4; | |
9790 | return size; | |
9791 | } | |
9792 | ||
9793 | size = 12; | |
b9e5796b AM |
9794 | if (ALWAYS_EMIT_R2SAVE |
9795 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9796 | size += 4; | |
9797 | if (PPC_HA (off) != 0) | |
794e51c0 | 9798 | size += 4; |
b9e5796b AM |
9799 | if (htab->opd_abi) |
9800 | { | |
9801 | size += 4; | |
e7d1c40c | 9802 | if (htab->params->plt_static_chain) |
b9e5796b | 9803 | size += 4; |
bd4d2eaa AM |
9804 | if (htab->params->plt_thread_safe |
9805 | && htab->elf.dynamic_sections_created | |
9806 | && stub_entry->h != NULL | |
9807 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 9808 | size += 8; |
e7d1c40c | 9809 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
9810 | size += 4; |
9811 | } | |
794e51c0 AM |
9812 | if (stub_entry->h != NULL |
9813 | && (stub_entry->h == htab->tls_get_addr_fd | |
9814 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 9815 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
9816 | { |
9817 | size += 7 * 4; | |
e81b4c93 | 9818 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) |
407aa07c | 9819 | size += 6 * 4; |
f378ab09 | 9820 | } |
794e51c0 AM |
9821 | return size; |
9822 | } | |
9823 | ||
2420fff6 AM |
9824 | /* Depending on the sign of plt_stub_align: |
9825 | If positive, return the padding to align to a 2**plt_stub_align | |
9826 | boundary. | |
9827 | If negative, if this stub would cross fewer 2**plt_stub_align | |
9828 | boundaries if we align, then return the padding needed to do so. */ | |
9829 | ||
794e51c0 AM |
9830 | static inline unsigned int |
9831 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
9832 | struct ppc_stub_hash_entry *stub_entry, | |
9833 | bfd_vma plt_off) | |
9834 | { | |
2420fff6 | 9835 | int stub_align; |
1aa42141 | 9836 | unsigned stub_size; |
6f20ed8a | 9837 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 9838 | |
2420fff6 AM |
9839 | if (htab->params->plt_stub_align >= 0) |
9840 | { | |
9841 | stub_align = 1 << htab->params->plt_stub_align; | |
9842 | if ((stub_off & (stub_align - 1)) != 0) | |
9843 | return stub_align - (stub_off & (stub_align - 1)); | |
9844 | return 0; | |
9845 | } | |
9846 | ||
9847 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 9848 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 9849 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 9850 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
9851 | return stub_align - (stub_off & (stub_align - 1)); |
9852 | return 0; | |
9853 | } | |
9854 | ||
9855 | /* Build a .plt call stub. */ | |
9856 | ||
9857 | static inline bfd_byte * | |
9858 | build_plt_stub (struct ppc_link_hash_table *htab, | |
9859 | struct ppc_stub_hash_entry *stub_entry, | |
9860 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
9861 | { | |
e7d1c40c | 9862 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 9863 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 9864 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
9865 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
9866 | && htab->elf.dynamic_sections_created | |
9867 | && stub_entry->h != NULL | |
9868 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
9869 | bfd_boolean use_fake_dep = plt_thread_safe; |
9870 | bfd_vma cmp_branch_off = 0; | |
9871 | ||
9872 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 9873 | && plt_load_toc |
794e51c0 | 9874 | && plt_thread_safe |
bd4d2eaa AM |
9875 | && !((stub_entry->h == htab->tls_get_addr_fd |
9876 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 9877 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
9878 | { |
9879 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
9880 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
9881 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 9882 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
9883 | bfd_vma to, from; |
9884 | ||
68d62958 AM |
9885 | if (pltindex > 32768) |
9886 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
9887 | to = (glinkoff |
9888 | + htab->glink->output_offset | |
9889 | + htab->glink->output_section->vma); | |
6f20ed8a | 9890 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
9891 | + 4 * (ALWAYS_EMIT_R2SAVE |
9892 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9893 | + 4 * (PPC_HA (offset) != 0) | |
9894 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
9895 | != PPC_HA (offset)) | |
9896 | + 4 * (plt_static_chain != 0) | |
9897 | + 20 | |
6f20ed8a AM |
9898 | + stub_entry->group->stub_sec->output_offset |
9899 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
9900 | cmp_branch_off = to - from; |
9901 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
9902 | } | |
9903 | ||
ac2df442 AM |
9904 | if (PPC_HA (offset) != 0) |
9905 | { | |
176a0d42 AM |
9906 | if (r != NULL) |
9907 | { | |
794e51c0 AM |
9908 | if (ALWAYS_EMIT_R2SAVE |
9909 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9910 | r[0].r_offset += 4; | |
176a0d42 | 9911 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 9912 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
9913 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
9914 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 9915 | if (plt_load_toc) |
176a0d42 | 9916 | { |
b9e5796b | 9917 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 9918 | { |
b9e5796b AM |
9919 | r[2].r_offset = r[1].r_offset + 4; |
9920 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
9921 | r[2].r_addend = r[0].r_addend; | |
9922 | } | |
9923 | else | |
9924 | { | |
9925 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
9926 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9927 | r[2].r_addend = r[0].r_addend + 8; | |
9928 | if (plt_static_chain) | |
9929 | { | |
9930 | r[3].r_offset = r[2].r_offset + 4; | |
9931 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9932 | r[3].r_addend = r[0].r_addend + 16; | |
9933 | } | |
c7131b65 | 9934 | } |
176a0d42 AM |
9935 | } |
9936 | } | |
794e51c0 AM |
9937 | if (ALWAYS_EMIT_R2SAVE |
9938 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 9939 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
9940 | if (plt_load_toc) |
9941 | { | |
9942 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
9943 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
9944 | } | |
9945 | else | |
9946 | { | |
9947 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
9948 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
9949 | } | |
b9e5796b AM |
9950 | if (plt_load_toc |
9951 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 9952 | { |
71a39c98 | 9953 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
9954 | offset = 0; |
9955 | } | |
71a39c98 | 9956 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 9957 | if (plt_load_toc) |
794e51c0 | 9958 | { |
b9e5796b AM |
9959 | if (use_fake_dep) |
9960 | { | |
9961 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
9962 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
9963 | } | |
9964 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
9965 | if (plt_static_chain) | |
9966 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 9967 | } |
ac2df442 AM |
9968 | } |
9969 | else | |
9970 | { | |
176a0d42 AM |
9971 | if (r != NULL) |
9972 | { | |
794e51c0 AM |
9973 | if (ALWAYS_EMIT_R2SAVE |
9974 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9975 | r[0].r_offset += 4; | |
176a0d42 | 9976 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 9977 | if (plt_load_toc) |
176a0d42 | 9978 | { |
b9e5796b | 9979 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 9980 | { |
b9e5796b AM |
9981 | r[1].r_offset = r[0].r_offset + 4; |
9982 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
9983 | r[1].r_addend = r[0].r_addend; | |
9984 | } | |
9985 | else | |
9986 | { | |
9987 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
9988 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9989 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
9990 | if (plt_static_chain) | |
9991 | { | |
9992 | r[2].r_offset = r[1].r_offset + 4; | |
9993 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9994 | r[2].r_addend = r[0].r_addend + 8; | |
9995 | } | |
c7131b65 | 9996 | } |
176a0d42 AM |
9997 | } |
9998 | } | |
794e51c0 AM |
9999 | if (ALWAYS_EMIT_R2SAVE |
10000 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10001 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10002 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10003 | if (plt_load_toc |
10004 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10005 | { |
10006 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10007 | offset = 0; | |
10008 | } | |
71a39c98 | 10009 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10010 | if (plt_load_toc) |
794e51c0 | 10011 | { |
b9e5796b AM |
10012 | if (use_fake_dep) |
10013 | { | |
10014 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10015 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10016 | } | |
10017 | if (plt_static_chain) | |
10018 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10019 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10020 | } |
ac2df442 | 10021 | } |
b9e5796b | 10022 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10023 | { |
10024 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10025 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10026 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10027 | } |
10028 | else | |
407aa07c | 10029 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
10030 | return p; |
10031 | } | |
10032 | ||
a7f2871e AM |
10033 | /* Build a special .plt call stub for __tls_get_addr. */ |
10034 | ||
10035 | #define LD_R11_0R3 0xe9630000 | |
10036 | #define LD_R12_0R3 0xe9830000 | |
10037 | #define MR_R0_R3 0x7c601b78 | |
10038 | #define CMPDI_R11_0 0x2c2b0000 | |
10039 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10040 | #define BEQLR 0x4d820020 | |
10041 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10042 | #define STD_R11_0R1 0xf9610000 |
10043 | #define BCTRL 0x4e800421 | |
10044 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10045 | #define MTLR_R11 0x7d6803a6 |
10046 | ||
10047 | static inline bfd_byte * | |
794e51c0 AM |
10048 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10049 | struct ppc_stub_hash_entry *stub_entry, | |
10050 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10051 | { |
e7d1c40c | 10052 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 10053 | bfd_byte *loc = p; |
794e51c0 | 10054 | |
a7f2871e AM |
10055 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10056 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10057 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10058 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10059 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10060 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10061 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
10062 | if (r != NULL) |
10063 | r[0].r_offset += 7 * 4; | |
e81b4c93 | 10064 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) |
f378ab09 AM |
10065 | return build_plt_stub (htab, stub_entry, p, offset, r); |
10066 | ||
a7f2871e | 10067 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 10068 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10069 | |
10070 | if (r != NULL) | |
f378ab09 | 10071 | r[0].r_offset += 2 * 4; |
794e51c0 | 10072 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 10073 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 10074 | |
a078d95a | 10075 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 10076 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10077 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10078 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10079 | ||
df136d64 AM |
10080 | if (htab->glink_eh_frame != NULL |
10081 | && htab->glink_eh_frame->size != 0) | |
10082 | { | |
10083 | bfd_byte *base, *eh; | |
10084 | unsigned int lr_used, delta; | |
10085 | ||
10086 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
10087 | eh = base + stub_entry->group->eh_size; | |
10088 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
10089 | delta = lr_used - stub_entry->group->lr_restore; | |
10090 | stub_entry->group->lr_restore = lr_used + 16; | |
10091 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
10092 | *eh++ = DW_CFA_offset_extended_sf; | |
10093 | *eh++ = 65; | |
10094 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
10095 | *eh++ = DW_CFA_advance_loc + 4; | |
10096 | *eh++ = DW_CFA_restore_extended; | |
10097 | *eh++ = 65; | |
10098 | stub_entry->group->eh_size = eh - base; | |
10099 | } | |
a7f2871e AM |
10100 | return p; |
10101 | } | |
10102 | ||
176a0d42 AM |
10103 | static Elf_Internal_Rela * |
10104 | get_relocs (asection *sec, int count) | |
10105 | { | |
10106 | Elf_Internal_Rela *relocs; | |
10107 | struct bfd_elf_section_data *elfsec_data; | |
10108 | ||
10109 | elfsec_data = elf_section_data (sec); | |
10110 | relocs = elfsec_data->relocs; | |
10111 | if (relocs == NULL) | |
10112 | { | |
10113 | bfd_size_type relsize; | |
10114 | relsize = sec->reloc_count * sizeof (*relocs); | |
10115 | relocs = bfd_alloc (sec->owner, relsize); | |
10116 | if (relocs == NULL) | |
10117 | return NULL; | |
10118 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10119 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10120 | sizeof (Elf_Internal_Shdr)); | |
10121 | if (elfsec_data->rela.hdr == NULL) | |
10122 | return NULL; | |
10123 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10124 | * sizeof (Elf64_External_Rela)); | |
10125 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10126 | sec->reloc_count = 0; |
10127 | } | |
10128 | relocs += sec->reloc_count; | |
10129 | sec->reloc_count += count; | |
10130 | return relocs; | |
10131 | } | |
10132 | ||
3d58e1fc AM |
10133 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
10134 | forms, to the equivalent relocs against the global symbol given by | |
10135 | STUB_ENTRY->H. */ | |
10136 | ||
10137 | static bfd_boolean | |
10138 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
10139 | struct ppc_stub_hash_entry *stub_entry, | |
10140 | Elf_Internal_Rela *r, unsigned int num_rel) | |
10141 | { | |
10142 | struct elf_link_hash_entry **hashes; | |
10143 | unsigned long symndx; | |
10144 | struct ppc_link_hash_entry *h; | |
10145 | bfd_vma symval; | |
10146 | ||
10147 | /* Relocs are always against symbols in their own object file. Fake | |
10148 | up global sym hashes for the stub bfd (which has no symbols). */ | |
10149 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
10150 | if (hashes == NULL) | |
10151 | { | |
10152 | bfd_size_type hsize; | |
10153 | ||
10154 | /* When called the first time, stub_globals will contain the | |
10155 | total number of symbols seen during stub sizing. After | |
10156 | allocating, stub_globals is used as an index to fill the | |
10157 | hashes array. */ | |
10158 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
10159 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
10160 | if (hashes == NULL) | |
10161 | return FALSE; | |
10162 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
10163 | htab->stub_globals = 1; | |
10164 | } | |
10165 | symndx = htab->stub_globals++; | |
10166 | h = stub_entry->h; | |
10167 | hashes[symndx] = &h->elf; | |
10168 | if (h->oh != NULL && h->oh->is_func) | |
10169 | h = ppc_follow_link (h->oh); | |
10170 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
10171 | || h->elf.root.type == bfd_link_hash_defweak); | |
10172 | symval = (h->elf.root.u.def.value | |
10173 | + h->elf.root.u.def.section->output_offset | |
10174 | + h->elf.root.u.def.section->output_section->vma); | |
10175 | while (num_rel-- != 0) | |
10176 | { | |
10177 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
10178 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
10179 | { | |
10180 | /* H is an opd symbol. The addend must be zero, and the | |
10181 | branch reloc is the only one we can convert. */ | |
10182 | r->r_addend = 0; | |
10183 | break; | |
10184 | } | |
10185 | else | |
10186 | r->r_addend -= symval; | |
10187 | --r; | |
10188 | } | |
10189 | return TRUE; | |
10190 | } | |
10191 | ||
aa374f67 | 10192 | static bfd_vma |
25f53a85 | 10193 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10194 | struct ppc_stub_hash_entry *stub_entry) |
10195 | { | |
25f53a85 | 10196 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 10197 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
10198 | |
10199 | if (r2off == 0) | |
10200 | { | |
10201 | /* Support linking -R objects. Get the toc pointer from the | |
10202 | opd entry. */ | |
10203 | char buf[8]; | |
b9e5796b AM |
10204 | if (!htab->opd_abi) |
10205 | return r2off; | |
aa374f67 AM |
10206 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10207 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10208 | ||
10209 | if (strcmp (opd->name, ".opd") != 0 | |
10210 | || opd->reloc_count != 0) | |
10211 | { | |
2cdcc330 AM |
10212 | info->callbacks->einfo |
10213 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
10214 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 10215 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 10216 | return (bfd_vma) -1; |
aa374f67 AM |
10217 | } |
10218 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 10219 | return (bfd_vma) -1; |
aa374f67 | 10220 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 10221 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 10222 | } |
6f20ed8a | 10223 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
10224 | return r2off; |
10225 | } | |
10226 | ||
b34976b6 | 10227 | static bfd_boolean |
4ce794b7 | 10228 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10229 | { |
721956f4 AM |
10230 | struct ppc_stub_hash_entry *stub_entry; |
10231 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10232 | struct bfd_link_info *info; |
10233 | struct ppc_link_hash_table *htab; | |
721956f4 | 10234 | bfd_byte *loc; |
3d58e1fc | 10235 | bfd_byte *p, *relp; |
1aa42141 | 10236 | bfd_vma targ, off; |
176a0d42 | 10237 | Elf_Internal_Rela *r; |
e054468f | 10238 | asection *plt; |
3d58e1fc | 10239 | int num_rel; |
5d1634d7 | 10240 | |
721956f4 AM |
10241 | /* Massage our args to the form they really have. */ |
10242 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10243 | info = in_arg; |
5d1634d7 | 10244 | |
5d1634d7 | 10245 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10246 | if (htab == NULL) |
10247 | return FALSE; | |
5d1634d7 | 10248 | |
1aa42141 | 10249 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 10250 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10251 | |
4ce794b7 | 10252 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10253 | switch (stub_entry->stub_type) |
5d1634d7 | 10254 | { |
721956f4 | 10255 | case ppc_stub_long_branch: |
ad8e1ba5 | 10256 | case ppc_stub_long_branch_r2off: |
721956f4 | 10257 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 10258 | targ = (stub_entry->target_value |
6911b7dc AM |
10259 | + stub_entry->target_section->output_offset |
10260 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 10261 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 10262 | |
721956f4 | 10263 | /* And this is where we are coming from. */ |
1aa42141 AM |
10264 | off = (stub_entry->stub_offset |
10265 | + stub_entry->group->stub_sec->output_offset | |
10266 | + stub_entry->group->stub_sec->output_section->vma); | |
10267 | off = targ - off; | |
e86ce104 | 10268 | |
9e390558 | 10269 | p = loc; |
ac2df442 | 10270 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 10271 | { |
25f53a85 | 10272 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10273 | |
a7c49797 | 10274 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10275 | { |
10276 | htab->stub_error = TRUE; | |
10277 | return FALSE; | |
10278 | } | |
9e390558 AM |
10279 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
10280 | p += 4; | |
ac2df442 AM |
10281 | if (PPC_HA (r2off) != 0) |
10282 | { | |
e7d1c40c | 10283 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10284 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
10285 | p += 4; | |
a7c49797 AM |
10286 | } |
10287 | if (PPC_LO (r2off) != 0) | |
10288 | { | |
10289 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
10290 | ADDI_R2_R2 | PPC_LO (r2off), p); |
10291 | p += 4; | |
ac2df442 | 10292 | } |
9e390558 | 10293 | off -= p - loc; |
ad8e1ba5 | 10294 | } |
9e390558 AM |
10295 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
10296 | p += 4; | |
ad8e1ba5 | 10297 | |
5c3dead3 AM |
10298 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10299 | { | |
cf97bcb0 AM |
10300 | _bfd_error_handler |
10301 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 10302 | stub_entry->root.string); |
5c3dead3 AM |
10303 | htab->stub_error = TRUE; |
10304 | return FALSE; | |
10305 | } | |
ee75fd95 AM |
10306 | |
10307 | if (info->emitrelocations) | |
10308 | { | |
6f20ed8a | 10309 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
10310 | if (r == NULL) |
10311 | return FALSE; | |
9e390558 | 10312 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 10313 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 10314 | r->r_addend = targ; |
3d58e1fc AM |
10315 | if (stub_entry->h != NULL |
10316 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
10317 | return FALSE; | |
ee75fd95 | 10318 | } |
721956f4 | 10319 | break; |
e86ce104 | 10320 | |
721956f4 | 10321 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10322 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10323 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10324 | stub_entry->root.string + 9, | |
b34976b6 | 10325 | FALSE, FALSE); |
721956f4 AM |
10326 | if (br_entry == NULL) |
10327 | { | |
cf97bcb0 AM |
10328 | _bfd_error_handler (_("can't find branch stub `%s'"), |
10329 | stub_entry->root.string); | |
b34976b6 AM |
10330 | htab->stub_error = TRUE; |
10331 | return FALSE; | |
721956f4 AM |
10332 | } |
10333 | ||
1aa42141 | 10334 | targ = (stub_entry->target_value |
176a0d42 AM |
10335 | + stub_entry->target_section->output_offset |
10336 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 10337 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 10338 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 10339 | |
1aa42141 | 10340 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 10341 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10342 | |
f94498ff | 10343 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10344 | { |
f94498ff | 10345 | br_entry->iter = 0; |
84f5d08e | 10346 | |
f94498ff | 10347 | if (htab->relbrlt != NULL) |
84f5d08e | 10348 | { |
f94498ff AM |
10349 | /* Create a reloc for the branch lookup table entry. */ |
10350 | Elf_Internal_Rela rela; | |
10351 | bfd_byte *rl; | |
10352 | ||
10353 | rela.r_offset = (br_entry->offset | |
10354 | + htab->brlt->output_offset | |
10355 | + htab->brlt->output_section->vma); | |
10356 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 10357 | rela.r_addend = targ; |
f94498ff AM |
10358 | |
10359 | rl = htab->relbrlt->contents; | |
10360 | rl += (htab->relbrlt->reloc_count++ | |
10361 | * sizeof (Elf64_External_Rela)); | |
10362 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10363 | } | |
10364 | else if (info->emitrelocations) | |
10365 | { | |
176a0d42 AM |
10366 | r = get_relocs (htab->brlt, 1); |
10367 | if (r == NULL) | |
10368 | return FALSE; | |
10369 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10370 | normal reloc processing. Symbols and offsets are not | |
10371 | translated from input file to output file form, so | |
10372 | set up the offset per the output file. */ | |
f94498ff AM |
10373 | r->r_offset = (br_entry->offset |
10374 | + htab->brlt->output_offset | |
10375 | + htab->brlt->output_section->vma); | |
10376 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 10377 | r->r_addend = targ; |
84f5d08e | 10378 | } |
84f5d08e | 10379 | } |
721956f4 | 10380 | |
1aa42141 | 10381 | targ = (br_entry->offset |
176a0d42 AM |
10382 | + htab->brlt->output_offset |
10383 | + htab->brlt->output_section->vma); | |
10384 | ||
1aa42141 AM |
10385 | off = (elf_gp (info->output_bfd) |
10386 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
10387 | off = targ - off; | |
721956f4 | 10388 | |
ad8e1ba5 | 10389 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10390 | { |
25f53a85 | 10391 | info->callbacks->einfo |
c1c8c1ef | 10392 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 10393 | stub_entry->root.string); |
5d1634d7 | 10394 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10395 | htab->stub_error = TRUE; |
10396 | return FALSE; | |
5d1634d7 | 10397 | } |
41bd81ab | 10398 | |
176a0d42 AM |
10399 | if (info->emitrelocations) |
10400 | { | |
6f20ed8a | 10401 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
10402 | if (r == NULL) |
10403 | return FALSE; | |
6f20ed8a | 10404 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
10405 | if (bfd_big_endian (info->output_bfd)) |
10406 | r[0].r_offset += 2; | |
00f412ee | 10407 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10408 | r[0].r_offset += 4; |
10409 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 10410 | r[0].r_addend = targ; |
176a0d42 AM |
10411 | if (PPC_HA (off) != 0) |
10412 | { | |
10413 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10414 | r[1].r_offset = r[0].r_offset + 4; | |
10415 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10416 | r[1].r_addend = r[0].r_addend; | |
10417 | } | |
10418 | } | |
10419 | ||
9e390558 | 10420 | p = loc; |
00f412ee | 10421 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10422 | { |
176a0d42 | 10423 | if (PPC_HA (off) != 0) |
ac2df442 | 10424 | { |
e7d1c40c | 10425 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10426 | ADDIS_R12_R2 | PPC_HA (off), p); |
10427 | p += 4; | |
e7d1c40c | 10428 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10429 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
10430 | } |
10431 | else | |
9e390558 AM |
10432 | bfd_put_32 (htab->params->stub_bfd, |
10433 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
10434 | } |
10435 | else | |
10436 | { | |
25f53a85 | 10437 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10438 | |
a7c49797 | 10439 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10440 | { |
10441 | htab->stub_error = TRUE; | |
10442 | return FALSE; | |
10443 | } | |
ad8e1ba5 | 10444 | |
9e390558 AM |
10445 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
10446 | p += 4; | |
176a0d42 | 10447 | if (PPC_HA (off) != 0) |
ac2df442 | 10448 | { |
e7d1c40c | 10449 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10450 | ADDIS_R12_R2 | PPC_HA (off), p); |
10451 | p += 4; | |
e7d1c40c | 10452 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10453 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
10454 | } |
10455 | else | |
9e390558 | 10456 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
10457 | |
10458 | if (PPC_HA (r2off) != 0) | |
10459 | { | |
9e390558 | 10460 | p += 4; |
e7d1c40c | 10461 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10462 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
10463 | } |
10464 | if (PPC_LO (r2off) != 0) | |
10465 | { | |
9e390558 | 10466 | p += 4; |
e7d1c40c | 10467 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10468 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 10469 | } |
ad8e1ba5 | 10470 | } |
9e390558 AM |
10471 | p += 4; |
10472 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
10473 | p += 4; | |
407aa07c AM |
10474 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
10475 | p += 4; | |
721956f4 | 10476 | break; |
5d1634d7 | 10477 | |
05d0e962 AM |
10478 | case ppc_stub_long_branch_notoc: |
10479 | case ppc_stub_long_branch_both: | |
10480 | case ppc_stub_plt_branch_notoc: | |
10481 | case ppc_stub_plt_branch_both: | |
10482 | case ppc_stub_plt_call_notoc: | |
10483 | case ppc_stub_plt_call_both: | |
10484 | p = loc; | |
f891966f | 10485 | off = (stub_entry->stub_offset |
05d0e962 AM |
10486 | + stub_entry->group->stub_sec->output_offset |
10487 | + stub_entry->group->stub_sec->output_section->vma); | |
10488 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
10489 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
10490 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10491 | { | |
10492 | off += 4; | |
10493 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
10494 | p += 4; | |
10495 | } | |
10496 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
10497 | { | |
10498 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
10499 | if (targ >= (bfd_vma) -2) | |
10500 | abort (); | |
10501 | ||
10502 | plt = htab->elf.splt; | |
10503 | if (!htab->elf.dynamic_sections_created | |
10504 | || stub_entry->h == NULL | |
10505 | || stub_entry->h->elf.dynindx == -1) | |
10506 | { | |
10507 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
10508 | plt = htab->elf.iplt; | |
10509 | else | |
10510 | plt = htab->pltlocal; | |
10511 | } | |
10512 | targ += plt->output_offset + plt->output_section->vma; | |
10513 | } | |
10514 | else | |
10515 | targ = (stub_entry->target_value | |
10516 | + stub_entry->target_section->output_offset | |
10517 | + stub_entry->target_section->output_section->vma); | |
10518 | off = targ - off; | |
f891966f | 10519 | |
3d58e1fc AM |
10520 | relp = p; |
10521 | num_rel = 0; | |
f891966f AM |
10522 | /* The notoc stubs calculate their target (either a PLT entry or |
10523 | the global entry point of a function) relative to the PC | |
10524 | returned by the "bcl" two instructions past the start of the | |
10525 | sequence emitted by build_offset. The offset is therefore 8 | |
10526 | less than calculated from the start of the sequence. */ | |
10527 | off -= 8; | |
05d0e962 AM |
10528 | p = build_offset (htab->params->stub_bfd, p, off, |
10529 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
f891966f | 10530 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 10531 | { |
f891966f | 10532 | bfd_vma from; |
3d58e1fc | 10533 | num_rel = 1; |
f891966f AM |
10534 | from = (stub_entry->stub_offset |
10535 | + stub_entry->group->stub_sec->output_offset | |
10536 | + stub_entry->group->stub_sec->output_section->vma | |
10537 | + (p - loc)); | |
05d0e962 | 10538 | bfd_put_32 (htab->params->stub_bfd, |
f891966f | 10539 | B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
10540 | } |
10541 | else | |
10542 | { | |
10543 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
10544 | p += 4; | |
10545 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
10546 | } | |
10547 | p += 4; | |
df136d64 | 10548 | |
3d58e1fc AM |
10549 | if (info->emitrelocations) |
10550 | { | |
10551 | bfd_vma roff; | |
10552 | num_rel += num_relocs_for_offset (off); | |
10553 | r = get_relocs (stub_entry->group->stub_sec, num_rel); | |
10554 | if (r == NULL) | |
10555 | return FALSE; | |
10556 | roff = relp + 16 - stub_entry->group->stub_sec->contents; | |
10557 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
10558 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
10559 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
10560 | { | |
10561 | ++r; | |
10562 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
10563 | r->r_offset = roff; | |
10564 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
10565 | r->r_addend = targ; | |
10566 | if (stub_entry->h != NULL | |
10567 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
10568 | return FALSE; | |
10569 | } | |
10570 | } | |
10571 | ||
df136d64 AM |
10572 | if (htab->glink_eh_frame != NULL |
10573 | && htab->glink_eh_frame->size != 0) | |
10574 | { | |
10575 | bfd_byte *base, *eh; | |
10576 | unsigned int lr_used, delta; | |
10577 | ||
10578 | base = (htab->glink_eh_frame->contents | |
10579 | + stub_entry->group->eh_base + 17); | |
10580 | eh = base + stub_entry->group->eh_size; | |
10581 | lr_used = stub_entry->stub_offset + 8; | |
10582 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
10583 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
10584 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10585 | lr_used += 4; | |
10586 | delta = lr_used - stub_entry->group->lr_restore; | |
10587 | stub_entry->group->lr_restore = lr_used + 8; | |
10588 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
10589 | *eh++ = DW_CFA_register; | |
10590 | *eh++ = 65; | |
10591 | *eh++ = 12; | |
10592 | *eh++ = DW_CFA_advance_loc + 2; | |
10593 | *eh++ = DW_CFA_restore_extended; | |
10594 | *eh++ = 65; | |
10595 | stub_entry->group->eh_size = eh - base; | |
10596 | } | |
05d0e962 AM |
10597 | break; |
10598 | ||
721956f4 | 10599 | case ppc_stub_plt_call: |
794e51c0 | 10600 | case ppc_stub_plt_call_r2save: |
e054468f | 10601 | if (stub_entry->h != NULL |
b31867b6 AM |
10602 | && stub_entry->h->is_func_descriptor |
10603 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10604 | { |
b31867b6 AM |
10605 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10606 | ||
10607 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 10608 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
10609 | if (fh->elf.root.type == bfd_link_hash_undefined |
10610 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
10611 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 10612 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
10613 | } |
10614 | ||
721956f4 | 10615 | /* Now build the stub. */ |
1aa42141 AM |
10616 | targ = stub_entry->plt_ent->plt.offset & ~1; |
10617 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
10618 | abort (); |
10619 | ||
33e44f2e | 10620 | plt = htab->elf.splt; |
25f23106 AM |
10621 | if (!htab->elf.dynamic_sections_created |
10622 | || stub_entry->h == NULL | |
10623 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
10624 | { |
10625 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
10626 | plt = htab->elf.iplt; | |
10627 | else | |
10628 | plt = htab->pltlocal; | |
10629 | } | |
1aa42141 | 10630 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 10631 | |
1aa42141 AM |
10632 | off = (elf_gp (info->output_bfd) |
10633 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
10634 | off = targ - off; | |
721956f4 | 10635 | |
ad8e1ba5 | 10636 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10637 | { |
25f53a85 | 10638 | info->callbacks->einfo |
695344c0 | 10639 | /* xgettext:c-format */ |
c1c8c1ef | 10640 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
10641 | stub_entry->h != NULL |
10642 | ? stub_entry->h->elf.root.root.string | |
10643 | : "<local sym>"); | |
721956f4 | 10644 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10645 | htab->stub_error = TRUE; |
10646 | return FALSE; | |
721956f4 AM |
10647 | } |
10648 | ||
176a0d42 AM |
10649 | r = NULL; |
10650 | if (info->emitrelocations) | |
10651 | { | |
6f20ed8a | 10652 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
10653 | ((PPC_HA (off) != 0) |
10654 | + (htab->opd_abi | |
e7d1c40c | 10655 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
10656 | && PPC_HA (off + 16) == PPC_HA (off)) |
10657 | : 1))); | |
176a0d42 AM |
10658 | if (r == NULL) |
10659 | return FALSE; | |
6f20ed8a | 10660 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
10661 | if (bfd_big_endian (info->output_bfd)) |
10662 | r[0].r_offset += 2; | |
1aa42141 | 10663 | r[0].r_addend = targ; |
176a0d42 | 10664 | } |
a7f2871e AM |
10665 | if (stub_entry->h != NULL |
10666 | && (stub_entry->h == htab->tls_get_addr_fd | |
10667 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10668 | && htab->params->tls_get_addr_opt) |
794e51c0 | 10669 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10670 | else |
794e51c0 | 10671 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10672 | break; |
10673 | ||
a4b6fadd AM |
10674 | case ppc_stub_save_res: |
10675 | return TRUE; | |
10676 | ||
721956f4 AM |
10677 | default: |
10678 | BFD_FAIL (); | |
b34976b6 | 10679 | return FALSE; |
721956f4 AM |
10680 | } |
10681 | ||
1aa42141 | 10682 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 10683 | |
e7d1c40c | 10684 | if (htab->params->emit_stub_syms) |
97b639ba AM |
10685 | { |
10686 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10687 | size_t len1, len2; |
10688 | char *name; | |
10689 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
10690 | "long_branch", |
10691 | "long_branch", | |
3f6ff479 AM |
10692 | "long_branch", |
10693 | "plt_branch", | |
ee75fd95 | 10694 | "plt_branch", |
05d0e962 AM |
10695 | "plt_branch", |
10696 | "plt_branch", | |
10697 | "plt_call", | |
10698 | "plt_call", | |
794e51c0 | 10699 | "plt_call", |
ee75fd95 AM |
10700 | "plt_call" }; |
10701 | ||
10702 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10703 | len2 = strlen (stub_entry->root.string); | |
10704 | name = bfd_malloc (len1 + len2 + 2); | |
10705 | if (name == NULL) | |
10706 | return FALSE; | |
10707 | memcpy (name, stub_entry->root.string, 9); | |
10708 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10709 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10710 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10711 | if (h == NULL) |
10712 | return FALSE; | |
10713 | if (h->root.type == bfd_link_hash_new) | |
10714 | { | |
10715 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 10716 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 10717 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
10718 | h->ref_regular = 1; |
10719 | h->def_regular = 1; | |
10720 | h->ref_regular_nonweak = 1; | |
10721 | h->forced_local = 1; | |
10722 | h->non_elf = 0; | |
2ec55de3 | 10723 | h->root.linker_def = 1; |
97b639ba AM |
10724 | } |
10725 | } | |
10726 | ||
b34976b6 | 10727 | return TRUE; |
721956f4 AM |
10728 | } |
10729 | ||
10730 | /* As above, but don't actually build the stub. Just bump offset so | |
10731 | we know stub section sizes, and select plt_branch stubs where | |
10732 | long_branch stubs won't do. */ | |
10733 | ||
b34976b6 | 10734 | static bfd_boolean |
4ce794b7 | 10735 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10736 | { |
10737 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10738 | struct bfd_link_info *info; |
721956f4 | 10739 | struct ppc_link_hash_table *htab; |
f891966f AM |
10740 | asection *plt; |
10741 | bfd_vma targ, off, r2off; | |
10742 | unsigned int size, extra, lr_used, delta; | |
721956f4 AM |
10743 | |
10744 | /* Massage our args to the form they really have. */ | |
10745 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10746 | info = in_arg; |
10747 | ||
10748 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10749 | if (htab == NULL) |
10750 | return FALSE; | |
721956f4 | 10751 | |
1aa42141 AM |
10752 | /* Make a note of the offset within the stubs for this entry. */ |
10753 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
10754 | ||
a4b6fadd AM |
10755 | if (stub_entry->h != NULL |
10756 | && stub_entry->h->save_res | |
10757 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
10758 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
10759 | { | |
10760 | /* Don't make stubs to out-of-line register save/restore | |
10761 | functions. Instead, emit copies of the functions. */ | |
10762 | stub_entry->group->needs_save_res = 1; | |
10763 | stub_entry->stub_type = ppc_stub_save_res; | |
10764 | return TRUE; | |
10765 | } | |
10766 | ||
f891966f | 10767 | switch (stub_entry->stub_type) |
721956f4 | 10768 | { |
f891966f AM |
10769 | case ppc_stub_plt_branch: |
10770 | case ppc_stub_plt_branch_r2off: | |
10771 | /* Reset the stub type from the plt branch variant in case we now | |
10772 | can reach with a shorter stub. */ | |
10773 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10774 | /* Fall through. */ | |
10775 | case ppc_stub_long_branch: | |
10776 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
10777 | targ = (stub_entry->target_value |
10778 | + stub_entry->target_section->output_offset | |
10779 | + stub_entry->target_section->output_section->vma); | |
f891966f | 10780 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
10781 | off = (stub_entry->stub_offset |
10782 | + stub_entry->group->stub_sec->output_offset | |
10783 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 10784 | |
ad8e1ba5 | 10785 | size = 4; |
f891966f | 10786 | r2off = 0; |
ad8e1ba5 AM |
10787 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
10788 | { | |
25f53a85 | 10789 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 10790 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10791 | { |
10792 | htab->stub_error = TRUE; | |
10793 | return FALSE; | |
10794 | } | |
a7c49797 | 10795 | size = 8; |
ac2df442 | 10796 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
10797 | size += 4; |
10798 | if (PPC_LO (r2off) != 0) | |
10799 | size += 4; | |
1aa42141 | 10800 | off += size - 4; |
ad8e1ba5 | 10801 | } |
1aa42141 | 10802 | off = targ - off; |
ad8e1ba5 | 10803 | |
f891966f AM |
10804 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
10805 | Do the same for -R objects without function descriptors. */ | |
10806 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
10807 | && r2off == 0 | |
10808 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
10809 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 10810 | { |
f891966f | 10811 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 10812 | |
f891966f AM |
10813 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10814 | stub_entry->root.string + 9, | |
10815 | TRUE, FALSE); | |
10816 | if (br_entry == NULL) | |
721956f4 | 10817 | { |
f891966f AM |
10818 | _bfd_error_handler (_("can't build branch stub `%s'"), |
10819 | stub_entry->root.string); | |
10820 | htab->stub_error = TRUE; | |
10821 | return FALSE; | |
721956f4 AM |
10822 | } |
10823 | ||
f891966f | 10824 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 10825 | { |
f891966f AM |
10826 | br_entry->iter = htab->stub_iteration; |
10827 | br_entry->offset = htab->brlt->size; | |
10828 | htab->brlt->size += 8; | |
63bc6f6c | 10829 | |
f891966f AM |
10830 | if (htab->relbrlt != NULL) |
10831 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
10832 | else if (info->emitrelocations) | |
84f5d08e | 10833 | { |
f891966f AM |
10834 | htab->brlt->reloc_count += 1; |
10835 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 10836 | } |
f891966f | 10837 | } |
ac2df442 | 10838 | |
f891966f AM |
10839 | targ = (br_entry->offset |
10840 | + htab->brlt->output_offset | |
10841 | + htab->brlt->output_section->vma); | |
10842 | off = (elf_gp (info->output_bfd) | |
10843 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
10844 | off = targ - off; | |
176a0d42 | 10845 | |
f891966f AM |
10846 | if (info->emitrelocations) |
10847 | { | |
10848 | stub_entry->group->stub_sec->reloc_count | |
10849 | += 1 + (PPC_HA (off) != 0); | |
10850 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
10851 | } | |
05d0e962 | 10852 | |
f891966f AM |
10853 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
10854 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
10855 | { | |
10856 | size = 12; | |
10857 | if (PPC_HA (off) != 0) | |
10858 | size = 16; | |
ac2df442 | 10859 | } |
f891966f | 10860 | else |
ac2df442 | 10861 | { |
f891966f AM |
10862 | size = 16; |
10863 | if (PPC_HA (off) != 0) | |
10864 | size += 4; | |
10865 | ||
10866 | if (PPC_HA (r2off) != 0) | |
10867 | size += 4; | |
10868 | if (PPC_LO (r2off) != 0) | |
10869 | size += 4; | |
ac2df442 | 10870 | } |
721956f4 | 10871 | } |
f891966f AM |
10872 | else if (info->emitrelocations) |
10873 | { | |
10874 | stub_entry->group->stub_sec->reloc_count += 1; | |
10875 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
10876 | } | |
10877 | break; | |
10878 | ||
10879 | case ppc_stub_plt_branch_notoc: | |
10880 | case ppc_stub_plt_branch_both: | |
10881 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10882 | /* Fall through. */ | |
10883 | case ppc_stub_long_branch_notoc: | |
10884 | case ppc_stub_long_branch_both: | |
10885 | off = (stub_entry->stub_offset | |
10886 | + stub_entry->group->stub_sec->output_offset | |
10887 | + stub_entry->group->stub_sec->output_section->vma); | |
10888 | size = 0; | |
10889 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
10890 | size = 4; | |
10891 | off += size; | |
10892 | targ = (stub_entry->target_value | |
10893 | + stub_entry->target_section->output_offset | |
10894 | + stub_entry->target_section->output_section->vma); | |
10895 | off = targ - off; | |
10896 | ||
3d58e1fc AM |
10897 | if (info->emitrelocations) |
10898 | { | |
10899 | stub_entry->group->stub_sec->reloc_count | |
10900 | += num_relocs_for_offset (off); | |
10901 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
10902 | } | |
10903 | ||
f891966f AM |
10904 | extra = size_offset (off - 8); |
10905 | /* Include branch insn plus those in the offset sequence. */ | |
10906 | size += 4 + extra; | |
10907 | /* The branch insn is at the end, or "extra" bytes along. So | |
10908 | its offset will be "extra" bytes less that that already | |
10909 | calculated. */ | |
10910 | off -= extra; | |
10911 | ||
10912 | /* After the bcl, lr has been modified so we need to emit | |
10913 | .eh_frame info saying the return address is in r12. */ | |
10914 | lr_used = stub_entry->stub_offset + 8; | |
10915 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
10916 | lr_used += 4; | |
10917 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
10918 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
10919 | DW_CFA_restore_extended 65. */ | |
10920 | delta = lr_used - stub_entry->group->lr_restore; | |
10921 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
10922 | stub_entry->group->lr_restore = lr_used + 8; | |
10923 | ||
10924 | /* If the branch can't reach, use a plt_branch. */ | |
10925 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
10926 | { | |
10927 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
10928 | - ppc_stub_long_branch_notoc); | |
10929 | size += 4; | |
10930 | } | |
3d58e1fc AM |
10931 | else if (info->emitrelocations) |
10932 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
10933 | break; |
10934 | ||
10935 | case ppc_stub_plt_call_notoc: | |
10936 | case ppc_stub_plt_call_both: | |
10937 | off = (stub_entry->stub_offset | |
10938 | + stub_entry->group->stub_sec->output_offset | |
10939 | + stub_entry->group->stub_sec->output_section->vma); | |
10940 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
10941 | off += 4; | |
10942 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
10943 | if (targ >= (bfd_vma) -2) | |
10944 | abort (); | |
10945 | ||
10946 | plt = htab->elf.splt; | |
10947 | if (!htab->elf.dynamic_sections_created | |
10948 | || stub_entry->h == NULL | |
10949 | || stub_entry->h->elf.dynindx == -1) | |
10950 | { | |
10951 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
10952 | plt = htab->elf.iplt; | |
10953 | else | |
10954 | plt = htab->pltlocal; | |
10955 | } | |
10956 | targ += plt->output_offset + plt->output_section->vma; | |
10957 | off = targ - off; | |
10958 | ||
10959 | if (htab->params->plt_stub_align != 0) | |
10960 | { | |
10961 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10962 | ||
10963 | stub_entry->group->stub_sec->size += pad; | |
10964 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
10965 | off -= pad; | |
10966 | } | |
10967 | ||
3d58e1fc AM |
10968 | if (info->emitrelocations) |
10969 | { | |
10970 | stub_entry->group->stub_sec->reloc_count | |
10971 | += num_relocs_for_offset (off - 8); | |
10972 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
10973 | } | |
10974 | ||
f891966f AM |
10975 | size = plt_stub_size (htab, stub_entry, off); |
10976 | ||
10977 | /* After the bcl, lr has been modified so we need to emit | |
10978 | .eh_frame info saying the return address is in r12. */ | |
10979 | lr_used = stub_entry->stub_offset + 8; | |
10980 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
10981 | lr_used += 4; | |
10982 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
10983 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
10984 | DW_CFA_restore_extended 65. */ | |
10985 | delta = lr_used - stub_entry->group->lr_restore; | |
10986 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
10987 | stub_entry->group->lr_restore = lr_used + 8; | |
10988 | break; | |
10989 | ||
10990 | case ppc_stub_plt_call: | |
10991 | case ppc_stub_plt_call_r2save: | |
10992 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
10993 | if (targ >= (bfd_vma) -2) | |
10994 | abort (); | |
10995 | plt = htab->elf.splt; | |
10996 | if (!htab->elf.dynamic_sections_created | |
10997 | || stub_entry->h == NULL | |
10998 | || stub_entry->h->elf.dynindx == -1) | |
10999 | { | |
11000 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11001 | plt = htab->elf.iplt; | |
11002 | else | |
11003 | plt = htab->pltlocal; | |
11004 | } | |
11005 | targ += plt->output_offset + plt->output_section->vma; | |
11006 | ||
11007 | off = (elf_gp (info->output_bfd) | |
11008 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11009 | off = targ - off; | |
11010 | ||
11011 | if (htab->params->plt_stub_align != 0) | |
11012 | { | |
11013 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11014 | ||
11015 | stub_entry->group->stub_sec->size += pad; | |
11016 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11017 | } | |
11018 | ||
11019 | if (info->emitrelocations) | |
11020 | { | |
11021 | stub_entry->group->stub_sec->reloc_count | |
11022 | += ((PPC_HA (off) != 0) | |
11023 | + (htab->opd_abi | |
11024 | ? 2 + (htab->params->plt_static_chain | |
11025 | && PPC_HA (off + 16) == PPC_HA (off)) | |
11026 | : 1)); | |
11027 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
11028 | } | |
11029 | ||
11030 | size = plt_stub_size (htab, stub_entry, off); | |
11031 | ||
11032 | if (stub_entry->h != NULL | |
11033 | && (stub_entry->h == htab->tls_get_addr_fd | |
11034 | || stub_entry->h == htab->tls_get_addr) | |
11035 | && htab->params->tls_get_addr_opt | |
11036 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11037 | { | |
11038 | /* After the bctrl, lr has been modified so we need to | |
11039 | emit .eh_frame info saying the return address is | |
11040 | on the stack. In fact we put the EH info specifying | |
11041 | that the return address is on the stack *at* the | |
11042 | call rather than after it, because the EH info for a | |
11043 | call needs to be specified by that point. | |
11044 | See libgcc/unwind-dw2.c execute_cfa_program. */ | |
11045 | lr_used = stub_entry->stub_offset + size - 20; | |
11046 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
11047 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
11048 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
11049 | delta = lr_used - stub_entry->group->lr_restore; | |
11050 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
11051 | stub_entry->group->lr_restore = size - 4; | |
11052 | } | |
11053 | break; | |
11054 | ||
11055 | default: | |
11056 | BFD_FAIL (); | |
11057 | return FALSE; | |
721956f4 AM |
11058 | } |
11059 | ||
6f20ed8a | 11060 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11061 | return TRUE; |
721956f4 AM |
11062 | } |
11063 | ||
11064 | /* Set up various things so that we can make a list of input sections | |
11065 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11066 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11067 | |
11068 | int | |
e7d1c40c | 11069 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11070 | { |
6f20ed8a | 11071 | unsigned int id; |
721956f4 AM |
11072 | bfd_size_type amt; |
11073 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11074 | ||
4dfe6ac6 NC |
11075 | if (htab == NULL) |
11076 | return -1; | |
4c52953f | 11077 | |
7cf7fcc8 | 11078 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
11079 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
11080 | htab->sec_info = bfd_zmalloc (amt); | |
11081 | if (htab->sec_info == NULL) | |
721956f4 AM |
11082 | return -1; |
11083 | ||
3d6f9012 AM |
11084 | /* Set toc_off for com, und, abs and ind sections. */ |
11085 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11086 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11087 | |
721956f4 AM |
11088 | return 1; |
11089 | } | |
11090 | ||
927be08e AM |
11091 | /* Set up for first pass at multitoc partitioning. */ |
11092 | ||
11093 | void | |
11094 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11095 | { | |
11096 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11097 | ||
1c865ab2 | 11098 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11099 | htab->toc_bfd = NULL; |
11100 | htab->toc_first_sec = NULL; | |
11101 | } | |
11102 | ||
e717da7e AM |
11103 | /* The linker repeatedly calls this function for each TOC input section |
11104 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11105 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11106 | |
927be08e | 11107 | bfd_boolean |
4ce794b7 | 11108 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11109 | { |
11110 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11111 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11112 | |
4dfe6ac6 NC |
11113 | if (htab == NULL) |
11114 | return FALSE; | |
11115 | ||
927be08e | 11116 | if (!htab->second_toc_pass) |
4c52953f | 11117 | { |
927be08e | 11118 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11119 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11120 | ||
11121 | if (new_bfd) | |
bf102f86 AM |
11122 | { |
11123 | htab->toc_bfd = isec->owner; | |
11124 | htab->toc_first_sec = isec; | |
11125 | } | |
927be08e | 11126 | |
bf102f86 AM |
11127 | addr = isec->output_offset + isec->output_section->vma; |
11128 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11129 | limit = 0x80008000; |
11130 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11131 | limit = 0x10000; | |
11132 | if (off + isec->size > limit) | |
bf102f86 AM |
11133 | { |
11134 | addr = (htab->toc_first_sec->output_offset | |
11135 | + htab->toc_first_sec->output_section->vma); | |
11136 | htab->toc_curr = addr; | |
a27e685f | 11137 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11138 | } |
99877b66 | 11139 | |
927be08e AM |
11140 | /* toc_curr is the base address of this toc group. Set elf_gp |
11141 | for the input section to be the offset relative to the | |
11142 | output toc base plus 0x8000. Making the input elf_gp an | |
11143 | offset allows us to move the toc as a whole without | |
11144 | recalculating input elf_gp. */ | |
06bcf541 | 11145 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
11146 | off += TOC_BASE_OFF; |
11147 | ||
11148 | /* Die if someone uses a linker script that doesn't keep input | |
11149 | file .toc and .got together. */ | |
a4fd3de5 AM |
11150 | if (new_bfd |
11151 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11152 | && elf_gp (isec->owner) != off) |
11153 | return FALSE; | |
11154 | ||
11155 | elf_gp (isec->owner) = off; | |
11156 | return TRUE; | |
4c52953f | 11157 | } |
927be08e AM |
11158 | |
11159 | /* During the second pass toc_first_sec points to the start of | |
11160 | a toc group, and toc_curr is used to track the old elf_gp. | |
11161 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11162 | if (htab->toc_bfd == isec->owner) | |
11163 | return TRUE; | |
11164 | htab->toc_bfd = isec->owner; | |
11165 | ||
11166 | if (htab->toc_first_sec == NULL | |
11167 | || htab->toc_curr != elf_gp (isec->owner)) | |
11168 | { | |
11169 | htab->toc_curr = elf_gp (isec->owner); | |
11170 | htab->toc_first_sec = isec; | |
11171 | } | |
11172 | addr = (htab->toc_first_sec->output_offset | |
11173 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 11174 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
11175 | elf_gp (isec->owner) = off; |
11176 | ||
11177 | return TRUE; | |
ad8e1ba5 AM |
11178 | } |
11179 | ||
927be08e AM |
11180 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11181 | symbol H. */ | |
11182 | ||
11183 | static bfd_boolean | |
11184 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11185 | { | |
11186 | if (h->root.type == bfd_link_hash_indirect) | |
11187 | return TRUE; | |
11188 | ||
927be08e AM |
11189 | merge_got_entries (&h->got.glist); |
11190 | ||
11191 | return TRUE; | |
11192 | } | |
11193 | ||
11194 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11195 | symbol H. */ | |
11196 | ||
11197 | static bfd_boolean | |
11198 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11199 | { | |
11200 | struct got_entry *gent; | |
11201 | ||
11202 | if (h->root.type == bfd_link_hash_indirect) | |
11203 | return TRUE; | |
11204 | ||
927be08e AM |
11205 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11206 | if (!gent->is_indirect) | |
11207 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11208 | return TRUE; | |
11209 | } | |
11210 | ||
11211 | /* Called on the first multitoc pass after the last call to | |
11212 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11213 | entries. */ | |
11214 | ||
11215 | bfd_boolean | |
11216 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11217 | { |
11218 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11219 | struct bfd *ibfd, *ibfd2; |
11220 | bfd_boolean done_something; | |
11221 | ||
11222 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11223 | |
7865406b AM |
11224 | if (!htab->do_multi_toc) |
11225 | return FALSE; | |
11226 | ||
d0fae19d | 11227 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11228 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11229 | ||
11230 | /* And tlsld_got. */ | |
c72f2fb2 | 11231 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11232 | { |
11233 | struct got_entry *ent, *ent2; | |
11234 | ||
11235 | if (!is_ppc64_elf (ibfd)) | |
11236 | continue; | |
11237 | ||
11238 | ent = ppc64_tlsld_got (ibfd); | |
11239 | if (!ent->is_indirect | |
11240 | && ent->got.offset != (bfd_vma) -1) | |
11241 | { | |
c72f2fb2 | 11242 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11243 | { |
11244 | if (!is_ppc64_elf (ibfd2)) | |
11245 | continue; | |
11246 | ||
11247 | ent2 = ppc64_tlsld_got (ibfd2); | |
11248 | if (!ent2->is_indirect | |
11249 | && ent2->got.offset != (bfd_vma) -1 | |
11250 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11251 | { | |
11252 | ent2->is_indirect = TRUE; | |
11253 | ent2->got.ent = ent; | |
11254 | } | |
11255 | } | |
11256 | } | |
11257 | } | |
11258 | ||
11259 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11260 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11261 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11262 | htab->got_reli_size = 0; |
11263 | ||
c72f2fb2 | 11264 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11265 | { |
11266 | asection *got, *relgot; | |
11267 | ||
11268 | if (!is_ppc64_elf (ibfd)) | |
11269 | continue; | |
11270 | ||
11271 | got = ppc64_elf_tdata (ibfd)->got; | |
11272 | if (got != NULL) | |
11273 | { | |
11274 | got->rawsize = got->size; | |
11275 | got->size = 0; | |
11276 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11277 | relgot->rawsize = relgot->size; | |
11278 | relgot->size = 0; | |
11279 | } | |
11280 | } | |
11281 | ||
11282 | /* Now reallocate the got, local syms first. We don't need to | |
11283 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11284 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11285 | { |
11286 | struct got_entry **lgot_ents; | |
11287 | struct got_entry **end_lgot_ents; | |
11288 | struct plt_entry **local_plt; | |
11289 | struct plt_entry **end_local_plt; | |
f961d9dd | 11290 | unsigned char *lgot_masks; |
927be08e AM |
11291 | bfd_size_type locsymcount; |
11292 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11293 | asection *s; |
927be08e AM |
11294 | |
11295 | if (!is_ppc64_elf (ibfd)) | |
11296 | continue; | |
11297 | ||
11298 | lgot_ents = elf_local_got_ents (ibfd); | |
11299 | if (!lgot_ents) | |
11300 | continue; | |
11301 | ||
11302 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11303 | locsymcount = symtab_hdr->sh_info; | |
11304 | end_lgot_ents = lgot_ents + locsymcount; | |
11305 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11306 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11307 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11308 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11309 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11310 | { | |
11311 | struct got_entry *ent; | |
11312 | ||
11313 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11314 | { |
19e08130 AM |
11315 | unsigned int ent_size = 8; |
11316 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11317 | ||
d0fae19d AM |
11318 | ent->got.offset = s->size; |
11319 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11320 | { |
19e08130 AM |
11321 | ent_size *= 2; |
11322 | rel_size *= 2; | |
11323 | } | |
11324 | s->size += ent_size; | |
37da22e5 | 11325 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 11326 | { |
33e44f2e | 11327 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11328 | htab->got_reli_size += rel_size; |
11329 | } | |
6a3858a6 AM |
11330 | else if (bfd_link_pic (info) |
11331 | && !((ent->tls_type & TLS_TPREL) != 0 | |
11332 | && bfd_link_executable (info))) | |
19e08130 AM |
11333 | { |
11334 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11335 | srel->size += rel_size; | |
d0fae19d AM |
11336 | } |
11337 | } | |
927be08e AM |
11338 | } |
11339 | } | |
11340 | ||
11341 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11342 | ||
c72f2fb2 | 11343 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11344 | { |
11345 | struct got_entry *ent; | |
11346 | ||
11347 | if (!is_ppc64_elf (ibfd)) | |
11348 | continue; | |
11349 | ||
11350 | ent = ppc64_tlsld_got (ibfd); | |
11351 | if (!ent->is_indirect | |
11352 | && ent->got.offset != (bfd_vma) -1) | |
11353 | { | |
11354 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11355 | ent->got.offset = s->size; | |
11356 | s->size += 16; | |
0e1862bb | 11357 | if (bfd_link_pic (info)) |
927be08e AM |
11358 | { |
11359 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11360 | srel->size += sizeof (Elf64_External_Rela); | |
11361 | } | |
11362 | } | |
11363 | } | |
11364 | ||
33e44f2e | 11365 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11366 | if (!done_something) |
c72f2fb2 | 11367 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11368 | { |
11369 | asection *got; | |
11370 | ||
11371 | if (!is_ppc64_elf (ibfd)) | |
11372 | continue; | |
11373 | ||
11374 | got = ppc64_elf_tdata (ibfd)->got; | |
11375 | if (got != NULL) | |
11376 | { | |
11377 | done_something = got->rawsize != got->size; | |
11378 | if (done_something) | |
11379 | break; | |
11380 | } | |
11381 | } | |
11382 | ||
11383 | if (done_something) | |
e7d1c40c | 11384 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11385 | |
11386 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11387 | on input sections. */ | |
11388 | htab->toc_bfd = NULL; | |
11389 | htab->toc_first_sec = NULL; | |
11390 | htab->second_toc_pass = TRUE; | |
11391 | return done_something; | |
11392 | } | |
11393 | ||
11394 | /* Called after second pass of multitoc partitioning. */ | |
11395 | ||
11396 | void | |
11397 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11398 | { | |
11399 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11400 | ||
11401 | /* After the second pass, toc_curr tracks the TOC offset used | |
11402 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11403 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11404 | } |
11405 | ||
9b5ecbd0 AM |
11406 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11407 | calls, then there's no need to use toc adjusting stubs when branching | |
11408 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11409 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11410 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11411 | for a stub was detected. If called from the top level, a return of | |
11412 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11413 | |
11414 | static int | |
4ce794b7 | 11415 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11416 | { |
9b5ecbd0 | 11417 | int ret; |
70cc837d AM |
11418 | |
11419 | /* Mark this section as checked. */ | |
11420 | isec->call_check_done = 1; | |
9b5ecbd0 | 11421 | |
772119ce AM |
11422 | /* We know none of our code bearing sections will need toc stubs. */ |
11423 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11424 | return 0; | |
11425 | ||
eea6121a | 11426 | if (isec->size == 0) |
082c50f8 AM |
11427 | return 0; |
11428 | ||
4c52953f AM |
11429 | if (isec->output_section == NULL) |
11430 | return 0; | |
11431 | ||
4c52953f | 11432 | ret = 0; |
70cc837d | 11433 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11434 | { |
70cc837d AM |
11435 | Elf_Internal_Rela *relstart, *rel; |
11436 | Elf_Internal_Sym *local_syms; | |
11437 | struct ppc_link_hash_table *htab; | |
2917689a | 11438 | |
70cc837d AM |
11439 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11440 | info->keep_memory); | |
11441 | if (relstart == NULL) | |
11442 | return -1; | |
90aecf7a | 11443 | |
70cc837d AM |
11444 | /* Look for branches to outside of this section. */ |
11445 | local_syms = NULL; | |
11446 | htab = ppc_hash_table (info); | |
11447 | if (htab == NULL) | |
11448 | return -1; | |
4c52953f | 11449 | |
70cc837d | 11450 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11451 | { |
70cc837d AM |
11452 | enum elf_ppc64_reloc_type r_type; |
11453 | unsigned long r_symndx; | |
11454 | struct elf_link_hash_entry *h; | |
11455 | struct ppc_link_hash_entry *eh; | |
11456 | Elf_Internal_Sym *sym; | |
11457 | asection *sym_sec; | |
11458 | struct _opd_sec_data *opd; | |
11459 | bfd_vma sym_value; | |
11460 | bfd_vma dest; | |
11461 | ||
11462 | r_type = ELF64_R_TYPE (rel->r_info); | |
11463 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 11464 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
11465 | && r_type != R_PPC64_REL14 |
11466 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d AM |
11467 | && r_type != R_PPC64_REL14_BRNTAKEN |
11468 | && r_type != R_PPC64_PLTCALL) | |
70cc837d | 11469 | continue; |
4c52953f | 11470 | |
70cc837d AM |
11471 | r_symndx = ELF64_R_SYM (rel->r_info); |
11472 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11473 | isec->owner)) | |
4c52953f | 11474 | { |
70cc837d AM |
11475 | ret = -1; |
11476 | break; | |
11477 | } | |
4c52953f | 11478 | |
70cc837d AM |
11479 | /* Calls to dynamic lib functions go through a plt call stub |
11480 | that uses r2. */ | |
11481 | eh = (struct ppc_link_hash_entry *) h; | |
11482 | if (eh != NULL | |
11483 | && (eh->elf.plt.plist != NULL | |
11484 | || (eh->oh != NULL | |
11485 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11486 | { | |
11487 | ret = 1; | |
11488 | break; | |
4c52953f AM |
11489 | } |
11490 | ||
70cc837d AM |
11491 | if (sym_sec == NULL) |
11492 | /* Ignore other undefined symbols. */ | |
4c52953f | 11493 | continue; |
4c52953f | 11494 | |
70cc837d AM |
11495 | /* Assume branches to other sections not included in the |
11496 | link need stubs too, to cover -R and absolute syms. */ | |
11497 | if (sym_sec->output_section == NULL) | |
11498 | { | |
11499 | ret = 1; | |
11500 | break; | |
11501 | } | |
4c52953f | 11502 | |
70cc837d AM |
11503 | if (h == NULL) |
11504 | sym_value = sym->st_value; | |
11505 | else | |
11506 | { | |
11507 | if (h->root.type != bfd_link_hash_defined | |
11508 | && h->root.type != bfd_link_hash_defweak) | |
11509 | abort (); | |
11510 | sym_value = h->root.u.def.value; | |
11511 | } | |
11512 | sym_value += rel->r_addend; | |
4c52953f | 11513 | |
70cc837d AM |
11514 | /* If this branch reloc uses an opd sym, find the code section. */ |
11515 | opd = get_opd_info (sym_sec); | |
11516 | if (opd != NULL) | |
11517 | { | |
11518 | if (h == NULL && opd->adjust != NULL) | |
11519 | { | |
11520 | long adjust; | |
4c52953f | 11521 | |
92a9c616 | 11522 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
11523 | if (adjust == -1) |
11524 | /* Assume deleted functions won't ever be called. */ | |
11525 | continue; | |
11526 | sym_value += adjust; | |
11527 | } | |
4c52953f | 11528 | |
aef36ac1 AM |
11529 | dest = opd_entry_value (sym_sec, sym_value, |
11530 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11531 | if (dest == (bfd_vma) -1) |
11532 | continue; | |
11533 | } | |
11534 | else | |
11535 | dest = (sym_value | |
11536 | + sym_sec->output_offset | |
11537 | + sym_sec->output_section->vma); | |
4c52953f | 11538 | |
70cc837d AM |
11539 | /* Ignore branch to self. */ |
11540 | if (sym_sec == isec) | |
11541 | continue; | |
4c52953f | 11542 | |
70cc837d AM |
11543 | /* If the called function uses the toc, we need a stub. */ |
11544 | if (sym_sec->has_toc_reloc | |
11545 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11546 | { |
70cc837d | 11547 | ret = 1; |
4c52953f AM |
11548 | break; |
11549 | } | |
70cc837d AM |
11550 | |
11551 | /* Assume any branch that needs a long branch stub might in fact | |
11552 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11553 | else if (dest - (isec->output_offset | |
11554 | + isec->output_section->vma | |
6911b7dc AM |
11555 | + rel->r_offset) + (1 << 25) |
11556 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11557 | ? h->other | |
11558 | : sym->st_other)) | |
4c52953f | 11559 | { |
70cc837d AM |
11560 | ret = 1; |
11561 | break; | |
11562 | } | |
11563 | ||
11564 | /* If calling back to a section in the process of being | |
11565 | tested, we can't say for sure that no toc adjusting stubs | |
11566 | are needed, so don't return zero. */ | |
11567 | else if (sym_sec->call_check_in_progress) | |
11568 | ret = 2; | |
11569 | ||
11570 | /* Branches to another section that itself doesn't have any TOC | |
11571 | references are OK. Recursively call ourselves to check. */ | |
11572 | else if (!sym_sec->call_check_done) | |
11573 | { | |
11574 | int recur; | |
11575 | ||
11576 | /* Mark current section as indeterminate, so that other | |
11577 | sections that call back to current won't be marked as | |
11578 | known. */ | |
11579 | isec->call_check_in_progress = 1; | |
11580 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11581 | isec->call_check_in_progress = 0; | |
11582 | ||
4c52953f AM |
11583 | if (recur != 0) |
11584 | { | |
70cc837d AM |
11585 | ret = recur; |
11586 | if (recur != 2) | |
11587 | break; | |
4c52953f AM |
11588 | } |
11589 | } | |
4c52953f | 11590 | } |
70cc837d AM |
11591 | |
11592 | if (local_syms != NULL | |
11593 | && (elf_symtab_hdr (isec->owner).contents | |
11594 | != (unsigned char *) local_syms)) | |
11595 | free (local_syms); | |
11596 | if (elf_section_data (isec)->relocs != relstart) | |
11597 | free (relstart); | |
9b5ecbd0 AM |
11598 | } |
11599 | ||
70cc837d AM |
11600 | if ((ret & 1) == 0 |
11601 | && isec->map_head.s != NULL | |
11602 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11603 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11604 | { | |
11605 | if (isec->map_head.s->has_toc_reloc | |
11606 | || isec->map_head.s->makes_toc_func_call) | |
11607 | ret = 1; | |
11608 | else if (!isec->map_head.s->call_check_done) | |
11609 | { | |
11610 | int recur; | |
11611 | isec->call_check_in_progress = 1; | |
11612 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11613 | isec->call_check_in_progress = 0; | |
11614 | if (recur != 0) | |
11615 | ret = recur; | |
11616 | } | |
11617 | } | |
11618 | ||
11619 | if (ret == 1) | |
11620 | isec->makes_toc_func_call = 1; | |
4c52953f | 11621 | |
9b5ecbd0 AM |
11622 | return ret; |
11623 | } | |
11624 | ||
721956f4 AM |
11625 | /* The linker repeatedly calls this function for each input section, |
11626 | in the order that input sections are linked into output sections. | |
11627 | Build lists of input sections to determine groupings between which | |
11628 | we may insert linker stubs. */ | |
11629 | ||
9b5ecbd0 | 11630 | bfd_boolean |
4ce794b7 | 11631 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11632 | { |
11633 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11634 | ||
4dfe6ac6 NC |
11635 | if (htab == NULL) |
11636 | return FALSE; | |
11637 | ||
734b6cf9 | 11638 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 11639 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 11640 | { |
3d6f9012 AM |
11641 | /* This happens to make the list in reverse order, |
11642 | which is what we want. */ | |
6f20ed8a AM |
11643 | htab->sec_info[isec->id].u.list |
11644 | = htab->sec_info[isec->output_section->id].u.list; | |
11645 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 11646 | } |
ad8e1ba5 | 11647 | |
4c52953f | 11648 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11649 | { |
8b974ba3 AM |
11650 | /* Analyse sections that aren't already flagged as needing a |
11651 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11652 | .fixup contains branches, but only back to the function that | |
11653 | hit an exception. */ | |
11654 | if (!(isec->has_toc_reloc | |
11655 | || (isec->flags & SEC_CODE) == 0 | |
11656 | || strcmp (isec->name, ".fixup") == 0 | |
11657 | || isec->call_check_done)) | |
11658 | { | |
11659 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11660 | return FALSE; |
8b974ba3 AM |
11661 | } |
11662 | /* Make all sections use the TOC assigned for this object file. | |
11663 | This will be wrong for pasted sections; We fix that in | |
11664 | check_pasted_section(). */ | |
11665 | if (elf_gp (isec->owner) != 0) | |
11666 | htab->toc_curr = elf_gp (isec->owner); | |
11667 | } | |
11668 | ||
6f20ed8a | 11669 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11670 | return TRUE; |
721956f4 AM |
11671 | } |
11672 | ||
70cc837d AM |
11673 | /* Check that all .init and .fini sections use the same toc, if they |
11674 | have toc relocs. */ | |
11675 | ||
11676 | static bfd_boolean | |
11677 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11678 | { | |
11679 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11680 | ||
11681 | if (o != NULL) | |
11682 | { | |
11683 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11684 | bfd_vma toc_off = 0; | |
11685 | asection *i; | |
11686 | ||
11687 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11688 | if (i->has_toc_reloc) | |
11689 | { | |
11690 | if (toc_off == 0) | |
6f20ed8a AM |
11691 | toc_off = htab->sec_info[i->id].toc_off; |
11692 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
11693 | return FALSE; |
11694 | } | |
6683a28d AM |
11695 | |
11696 | if (toc_off == 0) | |
11697 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11698 | if (i->makes_toc_func_call) | |
11699 | { | |
6f20ed8a | 11700 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
11701 | break; |
11702 | } | |
11703 | ||
70cc837d AM |
11704 | /* Make sure the whole pasted function uses the same toc offset. */ |
11705 | if (toc_off != 0) | |
11706 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 11707 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
11708 | } |
11709 | return TRUE; | |
11710 | } | |
11711 | ||
11712 | bfd_boolean | |
11713 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11714 | { | |
11715 | return (check_pasted_section (info, ".init") | |
11716 | & check_pasted_section (info, ".fini")); | |
11717 | } | |
11718 | ||
721956f4 AM |
11719 | /* See whether we can group stub sections together. Grouping stub |
11720 | sections may result in fewer stubs. More importantly, we need to | |
11721 | put all .init* and .fini* stubs at the beginning of the .init or | |
11722 | .fini output sections respectively, because glibc splits the | |
11723 | _init and _fini functions into multiple parts. Putting a stub in | |
11724 | the middle of a function is not a good idea. */ | |
11725 | ||
6f20ed8a AM |
11726 | static bfd_boolean |
11727 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
11728 | bfd_size_type stub_group_size, |
11729 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11730 | { |
6f20ed8a AM |
11731 | struct ppc_link_hash_table *htab; |
11732 | asection *osec; | |
7c8fe5c4 AM |
11733 | bfd_boolean suppress_size_errors; |
11734 | ||
6f20ed8a AM |
11735 | htab = ppc_hash_table (info); |
11736 | if (htab == NULL) | |
11737 | return FALSE; | |
11738 | ||
7c8fe5c4 | 11739 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
11740 | if (stub_group_size == 1) |
11741 | { | |
11742 | /* Default values. */ | |
11743 | if (stubs_always_before_branch) | |
09f92717 | 11744 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 11745 | else |
09f92717 | 11746 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
11747 | suppress_size_errors = TRUE; |
11748 | } | |
11749 | ||
6f20ed8a | 11750 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 11751 | { |
6f20ed8a AM |
11752 | asection *tail; |
11753 | ||
11754 | if (osec->id >= htab->sec_info_arr_size) | |
11755 | continue; | |
11756 | ||
11757 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 11758 | while (tail != NULL) |
721956f4 | 11759 | { |
734b6cf9 AM |
11760 | asection *curr; |
11761 | asection *prev; | |
11762 | bfd_size_type total; | |
11763 | bfd_boolean big_sec; | |
11764 | bfd_vma curr_toc; | |
6f20ed8a | 11765 | struct map_stub *group; |
09f92717 | 11766 | bfd_size_type group_size; |
734b6cf9 AM |
11767 | |
11768 | curr = tail; | |
eea6121a | 11769 | total = tail->size; |
09f92717 AM |
11770 | group_size = (ppc64_elf_section_data (tail) != NULL |
11771 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
11772 | ? stub_group_size >> 10 : stub_group_size); | |
11773 | ||
11774 | big_sec = total > group_size; | |
7c8fe5c4 | 11775 | if (big_sec && !suppress_size_errors) |
695344c0 | 11776 | /* xgettext:c-format */ |
871b3ab2 | 11777 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 11778 | tail->owner, tail); |
6f20ed8a | 11779 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 11780 | |
6f20ed8a | 11781 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 11782 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
11783 | < (ppc64_elf_section_data (prev) != NULL |
11784 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 11785 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 11786 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11787 | curr = prev; |
11788 | ||
11789 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 11790 | than group_size and thus can be handled by one stub |
734b6cf9 | 11791 | section. (or the tail section is itself larger than |
09f92717 AM |
11792 | group_size, in which case we may be toast.) We should |
11793 | really be keeping track of the total size of stubs added | |
11794 | here, as stubs contribute to the final output section | |
11795 | size. That's a little tricky, and this way will only | |
11796 | break if stubs added make the total size more than 2^25, | |
11797 | ie. for the default stub_group_size, if stubs total more | |
11798 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
11799 | group = bfd_alloc (curr->owner, sizeof (*group)); |
11800 | if (group == NULL) | |
11801 | return FALSE; | |
11802 | group->link_sec = curr; | |
11803 | group->stub_sec = NULL; | |
a4b6fadd | 11804 | group->needs_save_res = 0; |
df136d64 AM |
11805 | group->lr_restore = 0; |
11806 | group->eh_size = 0; | |
11807 | group->eh_base = 0; | |
a4b6fadd AM |
11808 | group->next = htab->group; |
11809 | htab->group = group; | |
734b6cf9 | 11810 | do |
721956f4 | 11811 | { |
6f20ed8a | 11812 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 11813 | /* Set up this stub group. */ |
6f20ed8a | 11814 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 11815 | } |
734b6cf9 AM |
11816 | while (tail != curr && (tail = prev) != NULL); |
11817 | ||
09f92717 | 11818 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
11819 | bytes before the stub section can be handled by it too. |
11820 | Don't do this if we have a really large section after the | |
11821 | stubs, as adding more stubs increases the chance that | |
11822 | branches may not reach into the stub section. */ | |
11823 | if (!stubs_always_before_branch && !big_sec) | |
11824 | { | |
11825 | total = 0; | |
11826 | while (prev != NULL | |
11827 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11828 | < (ppc64_elf_section_data (prev) != NULL |
11829 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
11830 | ? (group_size = stub_group_size >> 10) |
11831 | : group_size)) | |
6f20ed8a | 11832 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11833 | { |
11834 | tail = prev; | |
6f20ed8a AM |
11835 | prev = htab->sec_info[tail->id].u.list; |
11836 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
11837 | } |
11838 | } | |
11839 | tail = prev; | |
721956f4 AM |
11840 | } |
11841 | } | |
6f20ed8a | 11842 | return TRUE; |
721956f4 AM |
11843 | } |
11844 | ||
58d180e8 AM |
11845 | static const unsigned char glink_eh_frame_cie[] = |
11846 | { | |
11847 | 0, 0, 0, 16, /* length. */ | |
11848 | 0, 0, 0, 0, /* id. */ | |
11849 | 1, /* CIE version. */ | |
11850 | 'z', 'R', 0, /* Augmentation string. */ | |
11851 | 4, /* Code alignment. */ | |
11852 | 0x78, /* Data alignment. */ | |
11853 | 65, /* RA reg. */ | |
11854 | 1, /* Augmentation size. */ | |
11855 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 11856 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
11857 | }; |
11858 | ||
d969d15f AM |
11859 | /* Stripping output sections is normally done before dynamic section |
11860 | symbols have been allocated. This function is called later, and | |
11861 | handles cases like htab->brlt which is mapped to its own output | |
11862 | section. */ | |
11863 | ||
11864 | static void | |
11865 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11866 | { | |
11867 | if (isec->size == 0 | |
11868 | && isec->output_section->size == 0 | |
53d8967a | 11869 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11870 | && !bfd_section_removed_from_list (info->output_bfd, |
11871 | isec->output_section) | |
11872 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11873 | { | |
11874 | isec->output_section->flags |= SEC_EXCLUDE; | |
11875 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11876 | info->output_bfd->section_count--; | |
11877 | } | |
11878 | } | |
11879 | ||
721956f4 AM |
11880 | /* Determine and set the size of the stub section for a final link. |
11881 | ||
11882 | The basic idea here is to examine all the relocations looking for | |
11883 | PC-relative calls to a target that is unreachable with a "bl" | |
11884 | instruction. */ | |
11885 | ||
b34976b6 | 11886 | bfd_boolean |
e7d1c40c | 11887 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
11888 | { |
11889 | bfd_size_type stub_group_size; | |
b34976b6 | 11890 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11891 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11892 | ||
4dfe6ac6 NC |
11893 | if (htab == NULL) |
11894 | return FALSE; | |
11895 | ||
0e1862bb | 11896 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 11897 | htab->params->plt_thread_safe = 1; |
b9e5796b | 11898 | if (!htab->opd_abi) |
e7d1c40c AM |
11899 | htab->params->plt_thread_safe = 0; |
11900 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 11901 | { |
e2458743 | 11902 | static const char *const thread_starter[] = |
794e51c0 AM |
11903 | { |
11904 | "pthread_create", | |
11905 | /* libstdc++ */ | |
11906 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11907 | /* librt */ | |
11908 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11909 | "mq_notify", "create_timer", | |
11910 | /* libanl */ | |
11911 | "getaddrinfo_a", | |
11912 | /* libgomp */ | |
2300b5a1 | 11913 | "GOMP_parallel", |
794e51c0 | 11914 | "GOMP_parallel_start", |
2300b5a1 | 11915 | "GOMP_parallel_loop_static", |
794e51c0 | 11916 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 11917 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 11918 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 11919 | "GOMP_parallel_loop_guided", |
794e51c0 | 11920 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 11921 | "GOMP_parallel_loop_runtime", |
794e51c0 | 11922 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 11923 | "GOMP_parallel_sections", |
68ffbac6 | 11924 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
11925 | /* libgo */ |
11926 | "__go_go", | |
794e51c0 AM |
11927 | }; |
11928 | unsigned i; | |
11929 | ||
a4b6fadd | 11930 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
11931 | { |
11932 | struct elf_link_hash_entry *h; | |
11933 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
11934 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
11935 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
11936 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
11937 | break; |
11938 | } | |
11939 | } | |
e7d1c40c AM |
11940 | stubs_always_before_branch = htab->params->group_size < 0; |
11941 | if (htab->params->group_size < 0) | |
11942 | stub_group_size = -htab->params->group_size; | |
721956f4 | 11943 | else |
e7d1c40c | 11944 | stub_group_size = htab->params->group_size; |
721956f4 | 11945 | |
6f20ed8a AM |
11946 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
11947 | return FALSE; | |
721956f4 | 11948 | |
c9301e31 AM |
11949 | #define STUB_SHRINK_ITER 20 |
11950 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
11951 | exit on a stub section shrinking. This is to break out of a | |
11952 | pathological case where adding stubs on one iteration decreases | |
11953 | section gaps (perhaps due to alignment), which then requires | |
11954 | fewer or smaller stubs on the next iteration. */ | |
11955 | ||
721956f4 AM |
11956 | while (1) |
11957 | { | |
11958 | bfd *input_bfd; | |
11959 | unsigned int bfd_indx; | |
a4b6fadd | 11960 | struct map_stub *group; |
721956f4 AM |
11961 | |
11962 | htab->stub_iteration += 1; | |
721956f4 AM |
11963 | |
11964 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
11965 | input_bfd != NULL; | |
c72f2fb2 | 11966 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
11967 | { |
11968 | Elf_Internal_Shdr *symtab_hdr; | |
11969 | asection *section; | |
6cdc0ccc | 11970 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 11971 | |
0c8d6e5c | 11972 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
11973 | continue; |
11974 | ||
721956f4 | 11975 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 11976 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
11977 | if (symtab_hdr->sh_info == 0) |
11978 | continue; | |
11979 | ||
721956f4 AM |
11980 | /* Walk over each section attached to the input bfd. */ |
11981 | for (section = input_bfd->sections; | |
11982 | section != NULL; | |
11983 | section = section->next) | |
11984 | { | |
721956f4 | 11985 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
11986 | |
11987 | /* If there aren't any relocs, then there's nothing more | |
11988 | to do. */ | |
11989 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
11990 | || (section->flags & SEC_ALLOC) == 0 |
11991 | || (section->flags & SEC_LOAD) == 0 | |
11992 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
11993 | || section->reloc_count == 0) |
11994 | continue; | |
11995 | ||
11996 | /* If this section is a link-once section that will be | |
11997 | discarded, then don't create any stubs. */ | |
11998 | if (section->output_section == NULL | |
927be08e | 11999 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12000 | continue; |
12001 | ||
1e2f5b6e AM |
12002 | /* Get the relocs. */ |
12003 | internal_relocs | |
4ce794b7 | 12004 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12005 | info->keep_memory); |
721956f4 | 12006 | if (internal_relocs == NULL) |
1e2f5b6e | 12007 | goto error_ret_free_local; |
721956f4 AM |
12008 | |
12009 | /* Now examine each relocation. */ | |
12010 | irela = internal_relocs; | |
12011 | irelaend = irela + section->reloc_count; | |
12012 | for (; irela < irelaend; irela++) | |
12013 | { | |
4ce794b7 AM |
12014 | enum elf_ppc64_reloc_type r_type; |
12015 | unsigned int r_indx; | |
721956f4 AM |
12016 | enum ppc_stub_type stub_type; |
12017 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12018 | asection *sym_sec, *code_sec; |
e054468f | 12019 | bfd_vma sym_value, code_value; |
721956f4 | 12020 | bfd_vma destination; |
6911b7dc | 12021 | unsigned long local_off; |
8843416a | 12022 | bfd_boolean ok_dest; |
721956f4 | 12023 | struct ppc_link_hash_entry *hash; |
8387904d | 12024 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12025 | struct elf_link_hash_entry *h; |
12026 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12027 | char *stub_name; |
12028 | const asection *id_sec; | |
74f0fb50 | 12029 | struct _opd_sec_data *opd; |
e054468f | 12030 | struct plt_entry *plt_ent; |
721956f4 AM |
12031 | |
12032 | r_type = ELF64_R_TYPE (irela->r_info); | |
12033 | r_indx = ELF64_R_SYM (irela->r_info); | |
12034 | ||
4ce794b7 | 12035 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12036 | { |
12037 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12038 | goto error_ret_free_internal; |
721956f4 AM |
12039 | } |
12040 | ||
12041 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 12042 | if (r_type != R_PPC64_REL24 |
05d0e962 | 12043 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
12044 | && r_type != R_PPC64_REL14 |
12045 | && r_type != R_PPC64_REL14_BRTAKEN | |
12046 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12047 | continue; |
12048 | ||
12049 | /* Now determine the call target, its name, value, | |
12050 | section. */ | |
411e1bfb AM |
12051 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12052 | r_indx, input_bfd)) | |
12053 | goto error_ret_free_internal; | |
12054 | hash = (struct ppc_link_hash_entry *) h; | |
12055 | ||
8843416a | 12056 | ok_dest = FALSE; |
8387904d | 12057 | fdh = NULL; |
7fe2b9a6 | 12058 | sym_value = 0; |
411e1bfb | 12059 | if (hash == NULL) |
721956f4 | 12060 | { |
411e1bfb | 12061 | sym_value = sym->st_value; |
c27b8c2a AM |
12062 | if (sym_sec != NULL |
12063 | && sym_sec->output_section != NULL) | |
12064 | ok_dest = TRUE; | |
721956f4 | 12065 | } |
7fe2b9a6 AM |
12066 | else if (hash->elf.root.type == bfd_link_hash_defined |
12067 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12068 | { | |
12069 | sym_value = hash->elf.root.u.def.value; | |
12070 | if (sym_sec->output_section != NULL) | |
12071 | ok_dest = TRUE; | |
12072 | } | |
12073 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12074 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12075 | { |
99877b66 | 12076 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12077 | use the func descriptor sym instead if it is |
12078 | defined. */ | |
ceb1f1ef | 12079 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12080 | && hash->oh != NULL) |
8387904d | 12081 | { |
8c5b4e52 | 12082 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12083 | if (fdh->elf.root.type == bfd_link_hash_defined |
12084 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12085 | { | |
12086 | sym_sec = fdh->elf.root.u.def.section; | |
12087 | sym_value = fdh->elf.root.u.def.value; | |
12088 | if (sym_sec->output_section != NULL) | |
12089 | ok_dest = TRUE; | |
12090 | } | |
99877b66 AM |
12091 | else |
12092 | fdh = NULL; | |
8387904d | 12093 | } |
7fe2b9a6 AM |
12094 | } |
12095 | else | |
12096 | { | |
12097 | bfd_set_error (bfd_error_bad_value); | |
12098 | goto error_ret_free_internal; | |
721956f4 AM |
12099 | } |
12100 | ||
8843416a | 12101 | destination = 0; |
6911b7dc | 12102 | local_off = 0; |
8843416a AM |
12103 | if (ok_dest) |
12104 | { | |
12105 | sym_value += irela->r_addend; | |
12106 | destination = (sym_value | |
12107 | + sym_sec->output_offset | |
12108 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12109 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12110 | ? hash->elf.other | |
12111 | : sym->st_other); | |
8843416a AM |
12112 | } |
12113 | ||
8387904d | 12114 | code_sec = sym_sec; |
e054468f | 12115 | code_value = sym_value; |
74f0fb50 AM |
12116 | opd = get_opd_info (sym_sec); |
12117 | if (opd != NULL) | |
8387904d AM |
12118 | { |
12119 | bfd_vma dest; | |
12120 | ||
74f0fb50 | 12121 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12122 | { |
51aecdc5 | 12123 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12124 | if (adjust == -1) |
12125 | continue; | |
e054468f | 12126 | code_value += adjust; |
8387904d AM |
12127 | sym_value += adjust; |
12128 | } | |
12129 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12130 | &code_sec, &code_value, FALSE); |
8387904d AM |
12131 | if (dest != (bfd_vma) -1) |
12132 | { | |
12133 | destination = dest; | |
12134 | if (fdh != NULL) | |
12135 | { | |
12136 | /* Fixup old ABI sym to point at code | |
12137 | entry. */ | |
99877b66 | 12138 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12139 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12140 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12141 | } |
12142 | } | |
12143 | } | |
12144 | ||
721956f4 | 12145 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12146 | plt_ent = NULL; |
721956f4 | 12147 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12148 | &plt_ent, destination, |
12149 | local_off); | |
ad8e1ba5 | 12150 | |
05d0e962 AM |
12151 | if (r_type == R_PPC64_REL24_NOTOC) |
12152 | { | |
12153 | if (stub_type == ppc_stub_plt_call) | |
12154 | stub_type = ppc_stub_plt_call_notoc; | |
12155 | else if (stub_type == ppc_stub_long_branch | |
12156 | || (code_sec != NULL | |
12157 | && code_sec->output_section != NULL | |
12158 | && (((hash ? hash->elf.other : sym->st_other) | |
12159 | & STO_PPC64_LOCAL_MASK) | |
12160 | != 1 << STO_PPC64_LOCAL_BIT))) | |
12161 | stub_type = ppc_stub_long_branch_notoc; | |
12162 | } | |
12163 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
12164 | { |
12165 | /* Check whether we need a TOC adjusting stub. | |
12166 | Since the linker pastes together pieces from | |
12167 | different object files when creating the | |
12168 | _init and _fini functions, it may be that a | |
12169 | call to what looks like a local sym is in | |
12170 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
12171 | if ((code_sec != NULL |
12172 | && code_sec->output_section != NULL | |
12173 | && (htab->sec_info[code_sec->id].toc_off | |
12174 | != htab->sec_info[section->id].toc_off) | |
12175 | && (code_sec->has_toc_reloc | |
12176 | || code_sec->makes_toc_func_call)) | |
12177 | || (((hash ? hash->elf.other : sym->st_other) | |
12178 | & STO_PPC64_LOCAL_MASK) | |
12179 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
12180 | stub_type = ppc_stub_long_branch_r2off; |
12181 | } | |
12182 | ||
721956f4 AM |
12183 | if (stub_type == ppc_stub_none) |
12184 | continue; | |
12185 | ||
411e1bfb AM |
12186 | /* __tls_get_addr calls might be eliminated. */ |
12187 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 12188 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 12189 | && hash != NULL |
8387904d AM |
12190 | && (hash == htab->tls_get_addr |
12191 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12192 | && section->has_tls_reloc |
12193 | && irela != internal_relocs) | |
12194 | { | |
12195 | /* Get tls info. */ | |
f961d9dd | 12196 | unsigned char *tls_mask; |
411e1bfb | 12197 | |
3a71aa26 | 12198 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12199 | irela - 1, input_bfd)) |
12200 | goto error_ret_free_internal; | |
37da22e5 | 12201 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
12202 | continue; |
12203 | } | |
12204 | ||
f378ab09 | 12205 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 12206 | { |
6e1816be AM |
12207 | if (!htab->opd_abi |
12208 | && htab->params->plt_localentry0 != 0 | |
12209 | && is_elfv2_localentry0 (&hash->elf)) | |
12210 | htab->has_plt_localentry0 = 1; | |
12211 | else if (irela + 1 < irelaend | |
12212 | && irela[1].r_offset == irela->r_offset + 4 | |
12213 | && (ELF64_R_TYPE (irela[1].r_info) | |
12214 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
12215 | { |
12216 | if (!tocsave_find (htab, INSERT, | |
12217 | &local_syms, irela + 1, input_bfd)) | |
12218 | goto error_ret_free_internal; | |
12219 | } | |
f378ab09 AM |
12220 | else |
12221 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 12222 | } |
3b421ab3 | 12223 | |
721956f4 | 12224 | /* Support for grouping stub sections. */ |
6f20ed8a | 12225 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12226 | |
12227 | /* Get the name of this stub. */ | |
12228 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12229 | if (!stub_name) | |
12230 | goto error_ret_free_internal; | |
12231 | ||
12232 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12233 | stub_name, FALSE, FALSE); |
721956f4 AM |
12234 | if (stub_entry != NULL) |
12235 | { | |
05d0e962 AM |
12236 | enum ppc_stub_type old_type; |
12237 | /* A stub has already been created, but it may | |
12238 | not be the required type. We shouldn't be | |
12239 | transitioning from plt_call to long_branch | |
12240 | stubs or vice versa, but we might be | |
12241 | upgrading from plt_call to plt_call_r2save or | |
12242 | from long_branch to long_branch_r2off. */ | |
721956f4 | 12243 | free (stub_name); |
05d0e962 AM |
12244 | old_type = stub_entry->stub_type; |
12245 | switch (old_type) | |
12246 | { | |
12247 | default: | |
12248 | abort (); | |
12249 | ||
12250 | case ppc_stub_save_res: | |
12251 | continue; | |
12252 | ||
12253 | case ppc_stub_plt_call: | |
12254 | case ppc_stub_plt_call_r2save: | |
12255 | case ppc_stub_plt_call_notoc: | |
12256 | case ppc_stub_plt_call_both: | |
12257 | if (stub_type == ppc_stub_plt_call) | |
12258 | continue; | |
12259 | else if (stub_type == ppc_stub_plt_call_r2save) | |
12260 | { | |
12261 | if (old_type == ppc_stub_plt_call_notoc) | |
12262 | stub_type = ppc_stub_plt_call_both; | |
12263 | } | |
12264 | else if (stub_type == ppc_stub_plt_call_notoc) | |
12265 | { | |
12266 | if (old_type == ppc_stub_plt_call_r2save) | |
12267 | stub_type = ppc_stub_plt_call_both; | |
12268 | } | |
12269 | else | |
12270 | abort (); | |
12271 | break; | |
12272 | ||
12273 | case ppc_stub_plt_branch: | |
12274 | case ppc_stub_plt_branch_r2off: | |
12275 | case ppc_stub_plt_branch_notoc: | |
12276 | case ppc_stub_plt_branch_both: | |
12277 | old_type += (ppc_stub_long_branch | |
12278 | - ppc_stub_plt_branch); | |
12279 | /* Fall through. */ | |
12280 | case ppc_stub_long_branch: | |
12281 | case ppc_stub_long_branch_r2off: | |
12282 | case ppc_stub_long_branch_notoc: | |
12283 | case ppc_stub_long_branch_both: | |
12284 | if (stub_type == ppc_stub_long_branch) | |
12285 | continue; | |
12286 | else if (stub_type == ppc_stub_long_branch_r2off) | |
12287 | { | |
12288 | if (old_type == ppc_stub_long_branch_notoc) | |
12289 | stub_type = ppc_stub_long_branch_both; | |
12290 | } | |
12291 | else if (stub_type == ppc_stub_long_branch_notoc) | |
12292 | { | |
12293 | if (old_type == ppc_stub_long_branch_r2off) | |
12294 | stub_type = ppc_stub_long_branch_both; | |
12295 | } | |
12296 | else | |
12297 | abort (); | |
12298 | break; | |
12299 | } | |
12300 | if (old_type < stub_type) | |
794e51c0 | 12301 | stub_entry->stub_type = stub_type; |
721956f4 AM |
12302 | continue; |
12303 | } | |
12304 | ||
25f53a85 | 12305 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12306 | if (stub_entry == NULL) |
12307 | { | |
12308 | free (stub_name); | |
6cdc0ccc AM |
12309 | error_ret_free_internal: |
12310 | if (elf_section_data (section)->relocs == NULL) | |
12311 | free (internal_relocs); | |
12312 | error_ret_free_local: | |
12313 | if (local_syms != NULL | |
12314 | && (symtab_hdr->contents | |
12315 | != (unsigned char *) local_syms)) | |
12316 | free (local_syms); | |
b34976b6 | 12317 | return FALSE; |
721956f4 AM |
12318 | } |
12319 | ||
ad8e1ba5 | 12320 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
12321 | if (stub_type >= ppc_stub_plt_call |
12322 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 12323 | { |
05d0e962 AM |
12324 | stub_entry->target_value = sym_value; |
12325 | stub_entry->target_section = sym_sec; | |
e054468f AM |
12326 | } |
12327 | else | |
12328 | { | |
05d0e962 AM |
12329 | stub_entry->target_value = code_value; |
12330 | stub_entry->target_section = code_sec; | |
e054468f | 12331 | } |
721956f4 | 12332 | stub_entry->h = hash; |
e054468f | 12333 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
12334 | stub_entry->symtype |
12335 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 12336 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 12337 | |
3d58e1fc AM |
12338 | if (hash != NULL |
12339 | && (hash->elf.root.type == bfd_link_hash_defined | |
12340 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 12341 | htab->stub_globals += 1; |
721956f4 AM |
12342 | } |
12343 | ||
12344 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12345 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12346 | free (internal_relocs); |
721956f4 | 12347 | } |
6cdc0ccc AM |
12348 | |
12349 | if (local_syms != NULL | |
12350 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12351 | { | |
12352 | if (!info->keep_memory) | |
12353 | free (local_syms); | |
12354 | else | |
12355 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12356 | } | |
721956f4 AM |
12357 | } |
12358 | ||
5c3dead3 | 12359 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12360 | stub sections. */ |
d4aaa2a0 | 12361 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
12362 | { |
12363 | group->lr_restore = 0; | |
12364 | group->eh_size = 0; | |
12365 | if (group->stub_sec != NULL) | |
12366 | { | |
12367 | asection *stub_sec = group->stub_sec; | |
12368 | ||
12369 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
12370 | || stub_sec->rawsize < stub_sec->size) | |
12371 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12372 | stub_sec->rawsize = stub_sec->size; | |
12373 | stub_sec->size = 0; | |
12374 | stub_sec->reloc_count = 0; | |
12375 | stub_sec->flags &= ~SEC_RELOC; | |
12376 | } | |
12377 | } | |
eea6121a | 12378 | |
ba21f564 AM |
12379 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12380 | || htab->brlt->rawsize < htab->brlt->size) | |
12381 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 12382 | htab->brlt->size = 0; |
84f5d08e AM |
12383 | htab->brlt->reloc_count = 0; |
12384 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12385 | if (htab->relbrlt != NULL) |
eea6121a | 12386 | htab->relbrlt->size = 0; |
721956f4 | 12387 | |
63bc6f6c | 12388 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12389 | |
a4b6fadd AM |
12390 | for (group = htab->group; group != NULL; group = group->next) |
12391 | if (group->needs_save_res) | |
12392 | group->stub_sec->size += htab->sfpr->size; | |
12393 | ||
176a0d42 AM |
12394 | if (info->emitrelocations |
12395 | && htab->glink != NULL && htab->glink->size != 0) | |
12396 | { | |
12397 | htab->glink->reloc_count = 1; | |
12398 | htab->glink->flags |= SEC_RELOC; | |
12399 | } | |
12400 | ||
58d180e8 AM |
12401 | if (htab->glink_eh_frame != NULL |
12402 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 12403 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 12404 | { |
2e0ce1c8 | 12405 | size_t size = 0, align = 4; |
58d180e8 | 12406 | |
d4aaa2a0 | 12407 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
12408 | if (group->eh_size != 0) |
12409 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 12410 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 12411 | size += (24 + align - 1) & -align; |
58d180e8 | 12412 | if (size != 0) |
2e0ce1c8 AM |
12413 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
12414 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
12415 | size = (size + align - 1) & -align; | |
58d180e8 AM |
12416 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12417 | htab->glink_eh_frame->size = size; | |
12418 | } | |
12419 | ||
e7d1c40c | 12420 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
12421 | for (group = htab->group; group != NULL; group = group->next) |
12422 | if (group->stub_sec != NULL) | |
691d2e9a AM |
12423 | { |
12424 | int align = abs (htab->params->plt_stub_align); | |
12425 | group->stub_sec->size | |
12426 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
12427 | } | |
d4aaa2a0 AM |
12428 | |
12429 | for (group = htab->group; group != NULL; group = group->next) | |
12430 | if (group->stub_sec != NULL | |
12431 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 12432 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 12433 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
12434 | break; |
12435 | ||
d4aaa2a0 | 12436 | if (group == NULL |
ba21f564 AM |
12437 | && (htab->brlt->rawsize == htab->brlt->size |
12438 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
12439 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
12440 | && (htab->glink_eh_frame == NULL |
12441 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12442 | break; |
12443 | ||
721956f4 | 12444 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12445 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12446 | } |
12447 | ||
da44f4e5 AM |
12448 | if (htab->glink_eh_frame != NULL |
12449 | && htab->glink_eh_frame->size != 0) | |
12450 | { | |
12451 | bfd_vma val; | |
12452 | bfd_byte *p, *last_fde; | |
12453 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 12454 | struct map_stub *group; |
da44f4e5 | 12455 | |
df136d64 AM |
12456 | /* It is necessary to at least have a rough outline of the |
12457 | linker generated CIEs and FDEs written before | |
12458 | bfd_elf_discard_info is run, in order for these FDEs to be | |
12459 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
12460 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
12461 | if (p == NULL) | |
12462 | return FALSE; | |
12463 | htab->glink_eh_frame->contents = p; | |
12464 | last_fde = p; | |
2e0ce1c8 | 12465 | align = 4; |
da44f4e5 AM |
12466 | |
12467 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12468 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 12469 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 12470 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 12471 | p += last_fde_len + 4; |
da44f4e5 | 12472 | |
d4aaa2a0 | 12473 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 12474 | if (group->eh_size != 0) |
da44f4e5 | 12475 | { |
df136d64 | 12476 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 12477 | last_fde = p; |
df136d64 | 12478 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 12479 | /* FDE length. */ |
2e0ce1c8 | 12480 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
12481 | p += 4; |
12482 | /* CIE pointer. */ | |
12483 | val = p - htab->glink_eh_frame->contents; | |
12484 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12485 | p += 4; | |
12486 | /* Offset to stub section, written later. */ | |
12487 | p += 4; | |
12488 | /* stub section size. */ | |
d4aaa2a0 | 12489 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
12490 | p += 4; |
12491 | /* Augmentation. */ | |
12492 | p += 1; | |
df136d64 AM |
12493 | /* Make sure we don't have all nops. This is enough for |
12494 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
12495 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 12496 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
12497 | } |
12498 | if (htab->glink != NULL && htab->glink->size != 0) | |
12499 | { | |
12500 | last_fde = p; | |
2e0ce1c8 | 12501 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 12502 | /* FDE length. */ |
2e0ce1c8 | 12503 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
12504 | p += 4; |
12505 | /* CIE pointer. */ | |
12506 | val = p - htab->glink_eh_frame->contents; | |
12507 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12508 | p += 4; | |
12509 | /* Offset to .glink, written later. */ | |
12510 | p += 4; | |
12511 | /* .glink size. */ | |
12512 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
12513 | p += 4; | |
12514 | /* Augmentation. */ | |
12515 | p += 1; | |
12516 | ||
12517 | *p++ = DW_CFA_advance_loc + 1; | |
12518 | *p++ = DW_CFA_register; | |
12519 | *p++ = 65; | |
9f08fa5c | 12520 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 12521 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
12522 | *p++ = DW_CFA_restore_extended; |
12523 | *p++ = 65; | |
2e0ce1c8 | 12524 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
12525 | } |
12526 | /* Subsume any padding into the last FDE if user .eh_frame | |
12527 | sections are aligned more than glink_eh_frame. Otherwise any | |
12528 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 12529 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 12530 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 12531 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
12532 | htab->glink_eh_frame->size = size + pad; |
12533 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
12534 | } | |
12535 | ||
d969d15f AM |
12536 | maybe_strip_output (info, htab->brlt); |
12537 | if (htab->glink_eh_frame != NULL) | |
12538 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12539 | |
b34976b6 | 12540 | return TRUE; |
721956f4 AM |
12541 | } |
12542 | ||
12543 | /* Called after we have determined section placement. If sections | |
805fc799 | 12544 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12545 | |
805fc799 | 12546 | bfd_vma |
1c865ab2 | 12547 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12548 | { |
805fc799 | 12549 | asection *s; |
a27e685f | 12550 | bfd_vma TOCstart, adjust; |
721956f4 | 12551 | |
43417696 AM |
12552 | if (info != NULL) |
12553 | { | |
12554 | struct elf_link_hash_entry *h; | |
12555 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
12556 | ||
12557 | if (is_elf_hash_table (htab) | |
12558 | && htab->hgot != NULL) | |
12559 | h = htab->hgot; | |
12560 | else | |
12561 | { | |
12562 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
12563 | if (is_elf_hash_table (htab)) | |
12564 | htab->hgot = h; | |
12565 | } | |
12566 | if (h != NULL | |
12567 | && h->root.type == bfd_link_hash_defined | |
12568 | && !h->root.linker_def | |
12569 | && (!is_elf_hash_table (htab) | |
12570 | || h->def_regular)) | |
12571 | { | |
12572 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
12573 | + h->root.u.def.section->output_offset | |
12574 | + h->root.u.def.section->output_section->vma); | |
12575 | _bfd_set_gp_value (obfd, TOCstart); | |
12576 | return TOCstart; | |
12577 | } | |
12578 | } | |
12579 | ||
805fc799 AM |
12580 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12581 | order. The TOC starts where the first of these sections starts. */ | |
12582 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12583 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12584 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12585 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12586 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12587 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12588 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12589 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12590 | { |
12591 | /* This may happen for | |
12592 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12593 | .toc directive | |
12594 | o bad linker script | |
12595 | o --gc-sections and empty TOC sections | |
12596 | ||
12597 | FIXME: Warn user? */ | |
12598 | ||
12599 | /* Look for a likely section. We probably won't even be | |
12600 | using TOCstart. */ | |
12601 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12602 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12603 | | SEC_EXCLUDE)) | |
805fc799 AM |
12604 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12605 | break; | |
721956f4 | 12606 | if (s == NULL) |
805fc799 | 12607 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12608 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12609 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12610 | break; | |
721956f4 | 12611 | if (s == NULL) |
805fc799 | 12612 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12613 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12614 | == SEC_ALLOC) | |
805fc799 | 12615 | break; |
721956f4 | 12616 | if (s == NULL) |
805fc799 | 12617 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12618 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12619 | break; |
12620 | } | |
721956f4 | 12621 | |
805fc799 AM |
12622 | TOCstart = 0; |
12623 | if (s != NULL) | |
12624 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12625 | |
a27e685f AM |
12626 | /* Force alignment. */ |
12627 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
12628 | TOCstart -= adjust; | |
1c865ab2 AM |
12629 | _bfd_set_gp_value (obfd, TOCstart); |
12630 | ||
810d4e75 | 12631 | if (info != NULL && s != NULL) |
1c865ab2 AM |
12632 | { |
12633 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12634 | ||
810d4e75 AM |
12635 | if (htab != NULL) |
12636 | { | |
12637 | if (htab->elf.hgot != NULL) | |
12638 | { | |
a27e685f | 12639 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
12640 | htab->elf.hgot->root.u.def.section = s; |
12641 | } | |
12642 | } | |
12643 | else | |
1c865ab2 | 12644 | { |
810d4e75 AM |
12645 | struct bfd_link_hash_entry *bh = NULL; |
12646 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
12647 | s, TOC_BASE_OFF - adjust, |
12648 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
12649 | } |
12650 | } | |
805fc799 | 12651 | return TOCstart; |
721956f4 AM |
12652 | } |
12653 | ||
a345bc8d | 12654 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 12655 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
12656 | |
12657 | static bfd_boolean | |
49c09209 | 12658 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
12659 | { |
12660 | struct bfd_link_info *info; | |
12661 | struct ppc_link_hash_table *htab; | |
49c09209 | 12662 | struct plt_entry *ent; |
a345bc8d AM |
12663 | asection *s; |
12664 | ||
12665 | if (h->root.type == bfd_link_hash_indirect) | |
12666 | return TRUE; | |
12667 | ||
49c09209 AM |
12668 | info = inf; |
12669 | htab = ppc_hash_table (info); | |
12670 | if (htab == NULL) | |
12671 | return FALSE; | |
12672 | ||
12673 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
12674 | if (ent->plt.offset != (bfd_vma) -1) | |
12675 | { | |
12676 | /* This symbol has an entry in the procedure linkage | |
12677 | table. Set it up. */ | |
12678 | Elf_Internal_Rela rela; | |
2d7ad24e | 12679 | asection *plt, *relplt; |
49c09209 AM |
12680 | bfd_byte *loc; |
12681 | ||
12682 | if (!htab->elf.dynamic_sections_created | |
12683 | || h->dynindx == -1) | |
12684 | { | |
12685 | if (!(h->def_regular | |
12686 | && (h->root.type == bfd_link_hash_defined | |
12687 | || h->root.type == bfd_link_hash_defweak))) | |
12688 | continue; | |
2d7ad24e AM |
12689 | if (h->type == STT_GNU_IFUNC) |
12690 | { | |
12691 | plt = htab->elf.iplt; | |
12692 | relplt = htab->elf.irelplt; | |
12693 | htab->local_ifunc_resolver = 1; | |
12694 | if (htab->opd_abi) | |
12695 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
12696 | else | |
12697 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12698 | } | |
49c09209 | 12699 | else |
2d7ad24e AM |
12700 | { |
12701 | plt = htab->pltlocal; | |
12702 | if (bfd_link_pic (info)) | |
12703 | { | |
12704 | relplt = htab->relpltlocal; | |
12705 | if (htab->opd_abi) | |
12706 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
12707 | else | |
12708 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
12709 | } | |
12710 | else | |
12711 | relplt = NULL; | |
12712 | } | |
49c09209 AM |
12713 | rela.r_addend = (h->root.u.def.value |
12714 | + h->root.u.def.section->output_offset | |
12715 | + h->root.u.def.section->output_section->vma | |
12716 | + ent->addend); | |
2d7ad24e AM |
12717 | |
12718 | if (relplt == NULL) | |
12719 | { | |
12720 | loc = plt->contents + ent->plt.offset; | |
12721 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
12722 | if (htab->opd_abi) | |
12723 | { | |
12724 | bfd_vma toc = elf_gp (info->output_bfd); | |
12725 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
12726 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
12727 | } | |
12728 | } | |
12729 | else | |
12730 | { | |
12731 | rela.r_offset = (plt->output_section->vma | |
12732 | + plt->output_offset | |
12733 | + ent->plt.offset); | |
12734 | loc = relplt->contents + (relplt->reloc_count++ | |
12735 | * sizeof (Elf64_External_Rela)); | |
12736 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
12737 | } | |
49c09209 AM |
12738 | } |
12739 | else | |
12740 | { | |
12741 | rela.r_offset = (htab->elf.splt->output_section->vma | |
12742 | + htab->elf.splt->output_offset | |
12743 | + ent->plt.offset); | |
12744 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
12745 | rela.r_addend = ent->addend; | |
12746 | loc = (htab->elf.srelplt->contents | |
12747 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
12748 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
12749 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
12750 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 12751 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 12752 | } |
49c09209 AM |
12753 | } |
12754 | ||
a345bc8d AM |
12755 | if (!h->pointer_equality_needed) |
12756 | return TRUE; | |
12757 | ||
12758 | if (h->def_regular) | |
12759 | return TRUE; | |
12760 | ||
9e390558 | 12761 | s = htab->global_entry; |
49c09209 AM |
12762 | if (s == NULL || s->size == 0) |
12763 | return TRUE; | |
12764 | ||
12765 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
12766 | if (ent->plt.offset != (bfd_vma) -1 | |
12767 | && ent->addend == 0) | |
a345bc8d AM |
12768 | { |
12769 | bfd_byte *p; | |
12770 | asection *plt; | |
12771 | bfd_vma off; | |
12772 | ||
a345bc8d | 12773 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12774 | plt = htab->elf.splt; |
a345bc8d AM |
12775 | if (!htab->elf.dynamic_sections_created |
12776 | || h->dynindx == -1) | |
2d7ad24e AM |
12777 | { |
12778 | if (h->type == STT_GNU_IFUNC) | |
12779 | plt = htab->elf.iplt; | |
12780 | else | |
12781 | plt = htab->pltlocal; | |
12782 | } | |
49c09209 | 12783 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
12784 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
12785 | ||
12786 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12787 | { | |
12788 | info->callbacks->einfo | |
c1c8c1ef | 12789 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
12790 | h->root.root.string); |
12791 | bfd_set_error (bfd_error_bad_value); | |
12792 | htab->stub_error = TRUE; | |
12793 | } | |
12794 | ||
7341d5e2 AM |
12795 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
12796 | if (htab->params->emit_stub_syms) | |
12797 | { | |
12798 | size_t len = strlen (h->root.root.string); | |
12799 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
12800 | ||
12801 | if (name == NULL) | |
12802 | return FALSE; | |
12803 | ||
12804 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
12805 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
12806 | if (h == NULL) | |
12807 | return FALSE; | |
12808 | if (h->root.type == bfd_link_hash_new) | |
12809 | { | |
12810 | h->root.type = bfd_link_hash_defined; | |
12811 | h->root.u.def.section = s; | |
12812 | h->root.u.def.value = p - s->contents; | |
12813 | h->ref_regular = 1; | |
12814 | h->def_regular = 1; | |
12815 | h->ref_regular_nonweak = 1; | |
12816 | h->forced_local = 1; | |
12817 | h->non_elf = 0; | |
2ec55de3 | 12818 | h->root.linker_def = 1; |
7341d5e2 AM |
12819 | } |
12820 | } | |
12821 | ||
a345bc8d AM |
12822 | if (PPC_HA (off) != 0) |
12823 | { | |
12824 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12825 | p += 4; | |
12826 | } | |
12827 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12828 | p += 4; | |
12829 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12830 | p += 4; | |
407aa07c | 12831 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
12832 | break; |
12833 | } | |
12834 | return TRUE; | |
12835 | } | |
12836 | ||
49c09209 AM |
12837 | /* Write PLT relocs for locals. */ |
12838 | ||
12839 | static bfd_boolean | |
12840 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
12841 | { | |
12842 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12843 | bfd *ibfd; | |
12844 | ||
12845 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
12846 | { | |
12847 | struct got_entry **lgot_ents, **end_lgot_ents; | |
12848 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
12849 | Elf_Internal_Shdr *symtab_hdr; | |
12850 | bfd_size_type locsymcount; | |
12851 | Elf_Internal_Sym *local_syms = NULL; | |
12852 | struct plt_entry *ent; | |
12853 | ||
12854 | if (!is_ppc64_elf (ibfd)) | |
12855 | continue; | |
12856 | ||
12857 | lgot_ents = elf_local_got_ents (ibfd); | |
12858 | if (!lgot_ents) | |
12859 | continue; | |
12860 | ||
12861 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12862 | locsymcount = symtab_hdr->sh_info; | |
12863 | end_lgot_ents = lgot_ents + locsymcount; | |
12864 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12865 | end_local_plt = local_plt + locsymcount; | |
12866 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
12867 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
12868 | if (ent->plt.offset != (bfd_vma) -1) | |
12869 | { | |
12870 | Elf_Internal_Sym *sym; | |
12871 | asection *sym_sec; | |
12872 | asection *plt, *relplt; | |
12873 | bfd_byte *loc; | |
12874 | bfd_vma val; | |
49c09209 AM |
12875 | |
12876 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
12877 | lplt - local_plt, ibfd)) | |
12878 | { | |
12879 | if (local_syms != NULL | |
12880 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12881 | free (local_syms); | |
12882 | return FALSE; | |
12883 | } | |
12884 | ||
12885 | val = sym->st_value + ent->addend; | |
ba85c15d AM |
12886 | if (ELF_ST_TYPE (sym->st_info) != STT_GNU_IFUNC) |
12887 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
49c09209 AM |
12888 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
12889 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
12890 | ||
2d7ad24e AM |
12891 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
12892 | { | |
12893 | htab->local_ifunc_resolver = 1; | |
12894 | plt = htab->elf.iplt; | |
12895 | relplt = htab->elf.irelplt; | |
12896 | } | |
12897 | else | |
12898 | { | |
12899 | plt = htab->pltlocal; | |
12900 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
12901 | } | |
49c09209 | 12902 | |
2d7ad24e AM |
12903 | if (relplt == NULL) |
12904 | { | |
12905 | loc = plt->contents + ent->plt.offset; | |
12906 | bfd_put_64 (info->output_bfd, val, loc); | |
12907 | if (htab->opd_abi) | |
12908 | { | |
12909 | bfd_vma toc = elf_gp (ibfd); | |
12910 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
12911 | } | |
12912 | } | |
49c09209 | 12913 | else |
2d7ad24e AM |
12914 | { |
12915 | Elf_Internal_Rela rela; | |
12916 | rela.r_offset = (ent->plt.offset | |
12917 | + plt->output_offset | |
12918 | + plt->output_section->vma); | |
12919 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
12920 | { | |
12921 | if (htab->opd_abi) | |
12922 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
12923 | else | |
12924 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12925 | } | |
12926 | else | |
12927 | { | |
12928 | if (htab->opd_abi) | |
12929 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
12930 | else | |
12931 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
12932 | } | |
12933 | rela.r_addend = val; | |
12934 | loc = relplt->contents + (relplt->reloc_count++ | |
12935 | * sizeof (Elf64_External_Rela)); | |
12936 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
12937 | } | |
49c09209 AM |
12938 | } |
12939 | ||
12940 | if (local_syms != NULL | |
12941 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12942 | { | |
12943 | if (!info->keep_memory) | |
12944 | free (local_syms); | |
12945 | else | |
12946 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12947 | } | |
12948 | } | |
12949 | return TRUE; | |
12950 | } | |
12951 | ||
721956f4 AM |
12952 | /* Build all the stubs associated with the current output file. |
12953 | The stubs are kept in a hash table attached to the main linker | |
12954 | hash table. This function is called via gldelf64ppc_finish. */ | |
12955 | ||
b34976b6 | 12956 | bfd_boolean |
e7d1c40c | 12957 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12958 | char **stats) |
5d1634d7 AM |
12959 | { |
12960 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 12961 | struct map_stub *group; |
721956f4 | 12962 | asection *stub_sec; |
5d1634d7 | 12963 | bfd_byte *p; |
e717da7e | 12964 | int stub_sec_count = 0; |
5d1634d7 | 12965 | |
4dfe6ac6 NC |
12966 | if (htab == NULL) |
12967 | return FALSE; | |
12968 | ||
eea6121a | 12969 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 12970 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
12971 | { |
12972 | group->eh_size = 0; | |
12973 | group->lr_restore = 0; | |
12974 | if ((stub_sec = group->stub_sec) != NULL | |
12975 | && stub_sec->size != 0) | |
12976 | { | |
12977 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
12978 | stub_sec->size); | |
12979 | if (stub_sec->contents == NULL) | |
12980 | return FALSE; | |
12981 | stub_sec->size = 0; | |
12982 | } | |
12983 | } | |
5d1634d7 | 12984 | |
23eb7e01 | 12985 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12986 | { |
9f951329 | 12987 | unsigned int indx; |
ad8e1ba5 | 12988 | bfd_vma plt0; |
9f951329 | 12989 | |
721956f4 | 12990 | /* Build the .glink plt call stub. */ |
e7d1c40c | 12991 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12992 | { |
12993 | struct elf_link_hash_entry *h; | |
468392fb AM |
12994 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12995 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12996 | if (h == NULL) |
12997 | return FALSE; | |
12998 | if (h->root.type == bfd_link_hash_new) | |
12999 | { | |
13000 | h->root.type = bfd_link_hash_defined; | |
13001 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13002 | h->root.u.def.value = 8; |
f5385ebf AM |
13003 | h->ref_regular = 1; |
13004 | h->def_regular = 1; | |
13005 | h->ref_regular_nonweak = 1; | |
13006 | h->forced_local = 1; | |
13007 | h->non_elf = 0; | |
2ec55de3 | 13008 | h->root.linker_def = 1; |
97b639ba AM |
13009 | } |
13010 | } | |
33e44f2e AM |
13011 | plt0 = (htab->elf.splt->output_section->vma |
13012 | + htab->elf.splt->output_offset | |
13013 | - 16); | |
176a0d42 AM |
13014 | if (info->emitrelocations) |
13015 | { | |
13016 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13017 | if (r == NULL) | |
13018 | return FALSE; | |
13019 | r->r_offset = (htab->glink->output_offset | |
13020 | + htab->glink->output_section->vma); | |
13021 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13022 | r->r_addend = plt0; | |
13023 | } | |
4ce794b7 | 13024 | p = htab->glink->contents; |
176a0d42 | 13025 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13026 | bfd_put_64 (htab->glink->owner, plt0, p); |
13027 | p += 8; | |
b9e5796b AM |
13028 | if (htab->opd_abi) |
13029 | { | |
13030 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13031 | p += 4; | |
13032 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13033 | p += 4; | |
13034 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13035 | p += 4; | |
13036 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13037 | p += 4; | |
13038 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13039 | p += 4; | |
13040 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13041 | p += 4; | |
13042 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13043 | p += 4; | |
13044 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13045 | p += 4; | |
13046 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13047 | p += 4; | |
13048 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13049 | p += 4; | |
13050 | } | |
13051 | else | |
13052 | { | |
13053 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13054 | p += 4; | |
13055 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13056 | p += 4; | |
13057 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13058 | p += 4; | |
f378ab09 AM |
13059 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13060 | p += 4; | |
b9e5796b AM |
13061 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13062 | p += 4; | |
13063 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13064 | p += 4; | |
13065 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13066 | p += 4; | |
13067 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13068 | p += 4; | |
13069 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13070 | p += 4; | |
13071 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13072 | p += 4; | |
13073 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13074 | p += 4; | |
13075 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13076 | p += 4; | |
13077 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13078 | p += 4; | |
13079 | } | |
407aa07c AM |
13080 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13081 | p += 4; | |
c75bc4f7 | 13082 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13083 | |
9f951329 AM |
13084 | /* Build the .glink lazy link call stubs. */ |
13085 | indx = 0; | |
9e390558 | 13086 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13087 | { |
b9e5796b | 13088 | if (htab->opd_abi) |
9f951329 | 13089 | { |
b9e5796b AM |
13090 | if (indx < 0x8000) |
13091 | { | |
13092 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13093 | p += 4; | |
13094 | } | |
13095 | else | |
13096 | { | |
13097 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13098 | p += 4; | |
13099 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13100 | p); | |
13101 | p += 4; | |
13102 | } | |
9f951329 | 13103 | } |
4ce794b7 | 13104 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13105 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13106 | indx++; |
9f951329 AM |
13107 | p += 4; |
13108 | } | |
5d1634d7 | 13109 | } |
5d1634d7 | 13110 | |
49c09209 AM |
13111 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
13112 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
13113 | ||
13114 | if (!write_plt_relocs_for_local_syms (info)) | |
13115 | return FALSE; | |
9e390558 | 13116 | |
7341d5e2 | 13117 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13118 | { |
4ce794b7 | 13119 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13120 | htab->brlt->size); |
4ce794b7 | 13121 | if (htab->brlt->contents == NULL) |
b34976b6 | 13122 | return FALSE; |
721956f4 | 13123 | } |
ee75fd95 | 13124 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13125 | { |
13126 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13127 | htab->relbrlt->size); |
63bc6f6c AM |
13128 | if (htab->relbrlt->contents == NULL) |
13129 | return FALSE; | |
13130 | } | |
5d1634d7 | 13131 | |
721956f4 AM |
13132 | /* Build the stubs as directed by the stub hash table. */ |
13133 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13134 | |
a4b6fadd AM |
13135 | for (group = htab->group; group != NULL; group = group->next) |
13136 | if (group->needs_save_res) | |
7dda8d3c | 13137 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 13138 | |
aa8a7074 AM |
13139 | if (htab->relbrlt != NULL) |
13140 | htab->relbrlt->reloc_count = 0; | |
13141 | ||
e7d1c40c | 13142 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13143 | for (group = htab->group; group != NULL; group = group->next) |
13144 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
13145 | { |
13146 | int align = abs (htab->params->plt_stub_align); | |
13147 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13148 | } | |
794e51c0 | 13149 | |
7dda8d3c AM |
13150 | for (group = htab->group; group != NULL; group = group->next) |
13151 | if (group->needs_save_res) | |
13152 | { | |
13153 | stub_sec = group->stub_sec; | |
13154 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
13155 | htab->sfpr->contents, htab->sfpr->size); | |
13156 | if (htab->params->emit_stub_syms) | |
13157 | { | |
13158 | unsigned int i; | |
13159 | ||
13160 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13161 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13162 | return FALSE; | |
13163 | } | |
13164 | } | |
13165 | ||
df136d64 AM |
13166 | if (htab->glink_eh_frame != NULL |
13167 | && htab->glink_eh_frame->size != 0) | |
13168 | { | |
13169 | bfd_vma val; | |
13170 | size_t align = 4; | |
13171 | ||
13172 | p = htab->glink_eh_frame->contents; | |
13173 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
13174 | ||
13175 | for (group = htab->group; group != NULL; group = group->next) | |
13176 | if (group->eh_size != 0) | |
13177 | { | |
13178 | /* Offset to stub section. */ | |
13179 | val = (group->stub_sec->output_section->vma | |
13180 | + group->stub_sec->output_offset); | |
13181 | val -= (htab->glink_eh_frame->output_section->vma | |
13182 | + htab->glink_eh_frame->output_offset | |
13183 | + (p + 8 - htab->glink_eh_frame->contents)); | |
13184 | if (val + 0x80000000 > 0xffffffff) | |
13185 | { | |
13186 | _bfd_error_handler | |
13187 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
13188 | group->stub_sec->name); | |
13189 | return FALSE; | |
13190 | } | |
13191 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
13192 | p += (group->eh_size + 17 + 3) & -4; | |
13193 | } | |
13194 | if (htab->glink != NULL && htab->glink->size != 0) | |
13195 | { | |
13196 | /* Offset to .glink. */ | |
13197 | val = (htab->glink->output_section->vma | |
13198 | + htab->glink->output_offset | |
13199 | + 8); | |
13200 | val -= (htab->glink_eh_frame->output_section->vma | |
13201 | + htab->glink_eh_frame->output_offset | |
13202 | + (p + 8 - htab->glink_eh_frame->contents)); | |
13203 | if (val + 0x80000000 > 0xffffffff) | |
13204 | { | |
13205 | _bfd_error_handler | |
13206 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
13207 | htab->glink->name); | |
13208 | return FALSE; | |
13209 | } | |
13210 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
13211 | p += (24 + align - 1) & -align; | |
13212 | } | |
13213 | } | |
13214 | ||
d4aaa2a0 AM |
13215 | for (group = htab->group; group != NULL; group = group->next) |
13216 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
13217 | { |
13218 | stub_sec_count += 1; | |
c9301e31 AM |
13219 | if (stub_sec->rawsize != stub_sec->size |
13220 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13221 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13222 | break; |
13223 | } | |
5d1634d7 | 13224 | |
25516cc5 | 13225 | if (group != NULL) |
5d1634d7 | 13226 | { |
b34976b6 | 13227 | htab->stub_error = TRUE; |
cf97bcb0 | 13228 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 13229 | } |
721956f4 | 13230 | |
d2a300cf AM |
13231 | if (htab->stub_error) |
13232 | return FALSE; | |
13233 | ||
13234 | if (stats != NULL) | |
13235 | { | |
db84fff3 | 13236 | size_t len; |
d2a300cf AM |
13237 | *stats = bfd_malloc (500); |
13238 | if (*stats == NULL) | |
13239 | return FALSE; | |
13240 | ||
db84fff3 AM |
13241 | len = sprintf (*stats, |
13242 | ngettext ("linker stubs in %u group\n", | |
13243 | "linker stubs in %u groups\n", | |
13244 | stub_sec_count), | |
13245 | stub_sec_count); | |
05d0e962 AM |
13246 | sprintf (*stats + len, _(" branch %lu\n" |
13247 | " branch toc adj %lu\n" | |
13248 | " branch notoc %lu\n" | |
13249 | " branch both %lu\n" | |
13250 | " long branch %lu\n" | |
13251 | " long toc adj %lu\n" | |
13252 | " long notoc %lu\n" | |
13253 | " long both %lu\n" | |
13254 | " plt call %lu\n" | |
13255 | " plt call save %lu\n" | |
13256 | " plt call notoc %lu\n" | |
13257 | " plt call both %lu\n" | |
13258 | " global entry %lu"), | |
4ce794b7 AM |
13259 | htab->stub_count[ppc_stub_long_branch - 1], |
13260 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
05d0e962 AM |
13261 | htab->stub_count[ppc_stub_long_branch_notoc - 1], |
13262 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
4ce794b7 AM |
13263 | htab->stub_count[ppc_stub_plt_branch - 1], |
13264 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
05d0e962 AM |
13265 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], |
13266 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
794e51c0 | 13267 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 | 13268 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
05d0e962 AM |
13269 | htab->stub_count[ppc_stub_plt_call_notoc - 1], |
13270 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
7341d5e2 | 13271 | htab->stub_count[ppc_stub_global_entry - 1]); |
d2a300cf AM |
13272 | } |
13273 | return TRUE; | |
5bd4f169 AM |
13274 | } |
13275 | ||
60124e18 AM |
13276 | /* What to do when ld finds relocations against symbols defined in |
13277 | discarded sections. */ | |
13278 | ||
13279 | static unsigned int | |
13280 | ppc64_elf_action_discarded (asection *sec) | |
13281 | { | |
13282 | if (strcmp (".opd", sec->name) == 0) | |
13283 | return 0; | |
13284 | ||
13285 | if (strcmp (".toc", sec->name) == 0) | |
13286 | return 0; | |
13287 | ||
bce50a28 JJ |
13288 | if (strcmp (".toc1", sec->name) == 0) |
13289 | return 0; | |
13290 | ||
60124e18 AM |
13291 | return _bfd_elf_default_action_discarded (sec); |
13292 | } | |
13293 | ||
5bd4f169 AM |
13294 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13295 | to handle the relocations for a section. | |
13296 | ||
13297 | The relocs are always passed as Rela structures; if the section | |
13298 | actually uses Rel structures, the r_addend field will always be | |
13299 | zero. | |
13300 | ||
13301 | This function is responsible for adjust the section contents as | |
13302 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13303 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13304 | necessary. |
13305 | ||
13306 | This function does not have to worry about setting the reloc | |
13307 | address or the reloc symbol index. | |
13308 | ||
13309 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13310 | ||
13311 | LOCAL_SECTIONS is an array giving the section in the input file | |
13312 | corresponding to the st_shndx field of each local symbol. | |
13313 | ||
13314 | The global hash table entry for the global symbols can be found | |
13315 | via elf_sym_hashes (input_bfd). | |
13316 | ||
1049f94e | 13317 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13318 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13319 | going to be the section symbol corresponding to the output | |
13320 | section, which means that the addend must be adjusted | |
13321 | accordingly. */ | |
13322 | ||
b34976b6 | 13323 | static bfd_boolean |
4ce794b7 AM |
13324 | ppc64_elf_relocate_section (bfd *output_bfd, |
13325 | struct bfd_link_info *info, | |
13326 | bfd *input_bfd, | |
13327 | asection *input_section, | |
13328 | bfd_byte *contents, | |
13329 | Elf_Internal_Rela *relocs, | |
13330 | Elf_Internal_Sym *local_syms, | |
13331 | asection **local_sections) | |
5bd4f169 | 13332 | { |
65f38f15 | 13333 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13334 | Elf_Internal_Shdr *symtab_hdr; |
13335 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13336 | Elf_Internal_Rela *rel; |
c316a17c | 13337 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13338 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13339 | Elf_Internal_Rela outrel; |
13340 | bfd_byte *loc; | |
411e1bfb | 13341 | struct got_entry **local_got_ents; |
5bd4f169 | 13342 | bfd_vma TOCstart; |
b34976b6 AM |
13343 | bfd_boolean ret = TRUE; |
13344 | bfd_boolean is_opd; | |
794e51c0 AM |
13345 | /* Assume 'at' branch hints. */ |
13346 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13347 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13348 | |
65f38f15 | 13349 | /* Initialize howto table if needed. */ |
5bd4f169 | 13350 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13351 | ppc_howto_init (); |
13352 | ||
65f38f15 | 13353 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13354 | if (htab == NULL) |
13355 | return FALSE; | |
ee75fd95 AM |
13356 | |
13357 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13358 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13359 | return TRUE; |
13360 | ||
7af5d5c4 AM |
13361 | if (!is_ppc64_elf (input_bfd)) |
13362 | { | |
13363 | bfd_set_error (bfd_error_wrong_format); | |
13364 | return FALSE; | |
13365 | } | |
0ffa91dd | 13366 | |
411e1bfb | 13367 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13368 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13369 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13370 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13371 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13372 | |
c316a17c | 13373 | rel = wrel = relocs; |
5bd4f169 | 13374 | relend = relocs + input_section->reloc_count; |
c316a17c | 13375 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13376 | { |
04c9666a | 13377 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13378 | bfd_vma addend; |
5bd4f169 AM |
13379 | bfd_reloc_status_type r; |
13380 | Elf_Internal_Sym *sym; | |
13381 | asection *sec; | |
039b3fef AM |
13382 | struct elf_link_hash_entry *h_elf; |
13383 | struct ppc_link_hash_entry *h; | |
13384 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13385 | const char *sym_name; |
0d4792f7 | 13386 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13387 | bfd_vma toc_addend; |
f961d9dd AM |
13388 | unsigned char tls_mask, tls_gd, tls_type; |
13389 | unsigned char sym_type; | |
5bd4f169 | 13390 | bfd_vma relocation; |
23cedd1d | 13391 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 13392 | bfd_boolean warned; |
bc30df16 | 13393 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13394 | unsigned int insn; |
e11840f9 | 13395 | unsigned int mask; |
721956f4 AM |
13396 | struct ppc_stub_hash_entry *stub_entry; |
13397 | bfd_vma max_br_offset; | |
13398 | bfd_vma from; | |
c316a17c | 13399 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13400 | reloc_howto_type *howto; |
13401 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13402 | |
c316a17c AM |
13403 | again: |
13404 | orig_rel = *rel; | |
13405 | ||
4ce794b7 | 13406 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13407 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13408 | |
13409 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13410 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13411 | proper TOC base to use. */ | |
13412 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13413 | && wrel != relocs |
13414 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13415 | && is_opd) |
c316a17c | 13416 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13417 | |
4ce794b7 AM |
13418 | sym = NULL; |
13419 | sec = NULL; | |
039b3fef | 13420 | h_elf = NULL; |
4ce794b7 | 13421 | sym_name = NULL; |
b34976b6 AM |
13422 | unresolved_reloc = FALSE; |
13423 | warned = FALSE; | |
65f38f15 | 13424 | |
0b13192e | 13425 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13426 | { |
13427 | /* It's a local symbol. */ | |
74f0fb50 | 13428 | struct _opd_sec_data *opd; |
4025353c | 13429 | |
5bd4f169 AM |
13430 | sym = local_syms + r_symndx; |
13431 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13432 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13433 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13434 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13435 | opd = get_opd_info (sec); |
13436 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13437 | { |
51aecdc5 AM |
13438 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
13439 | + rel->r_addend)]; | |
4025353c AM |
13440 | if (adjust == -1) |
13441 | relocation = 0; | |
13442 | else | |
4cc603a5 AM |
13443 | { |
13444 | /* If this is a relocation against the opd section sym | |
13445 | and we have edited .opd, adjust the reloc addend so | |
13446 | that ld -r and ld --emit-relocs output is correct. | |
13447 | If it is a reloc against some other .opd symbol, | |
13448 | then the symbol value will be adjusted later. */ | |
13449 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13450 | rel->r_addend += adjust; | |
13451 | else | |
13452 | relocation += adjust; | |
13453 | } | |
1e2f5b6e | 13454 | } |
5bd4f169 AM |
13455 | } |
13456 | else | |
13457 | { | |
62d887d4 L |
13458 | bfd_boolean ignored; |
13459 | ||
b2a8e766 AM |
13460 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13461 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13462 | h_elf, sec, relocation, |
62d887d4 | 13463 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13464 | sym_name = h_elf->root.root.string; |
13465 | sym_type = h_elf->type; | |
b69fdb4e AM |
13466 | if (sec != NULL |
13467 | && sec->owner == output_bfd | |
13468 | && strcmp (sec->name, ".opd") == 0) | |
13469 | { | |
13470 | /* This is a symbol defined in a linker script. All | |
13471 | such are defined in output sections, even those | |
13472 | defined by simple assignment from a symbol defined in | |
13473 | an input section. Transfer the symbol to an | |
13474 | appropriate input .opd section, so that a branch to | |
13475 | this symbol will be mapped to the location specified | |
13476 | by the opd entry. */ | |
13477 | struct bfd_link_order *lo; | |
13478 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13479 | if (lo->type == bfd_indirect_link_order) | |
13480 | { | |
13481 | asection *isec = lo->u.indirect.section; | |
13482 | if (h_elf->root.u.def.value >= isec->output_offset | |
13483 | && h_elf->root.u.def.value < (isec->output_offset | |
13484 | + isec->size)) | |
13485 | { | |
13486 | h_elf->root.u.def.value -= isec->output_offset; | |
13487 | h_elf->root.u.def.section = isec; | |
13488 | sec = isec; | |
13489 | break; | |
13490 | } | |
13491 | } | |
13492 | } | |
5bd4f169 | 13493 | } |
039b3fef | 13494 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13495 | |
dbaa2011 | 13496 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
13497 | { |
13498 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
13499 | input_bfd, input_section, | |
0930cb30 | 13500 | contents, rel->r_offset); |
c316a17c AM |
13501 | wrel->r_offset = rel->r_offset; |
13502 | wrel->r_info = 0; | |
13503 | wrel->r_addend = 0; | |
13504 | ||
13505 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 13506 | symbols defined in discarded sections. Not done for |
c316a17c AM |
13507 | non-debug to preserve relocs in .eh_frame which the |
13508 | eh_frame editing code expects to be present. */ | |
13509 | if (bfd_link_relocatable (info) | |
13510 | && (input_section->flags & SEC_DEBUGGING)) | |
13511 | wrel--; | |
13512 | ||
13513 | continue; | |
13514 | } | |
ab96bf03 | 13515 | |
0e1862bb | 13516 | if (bfd_link_relocatable (info)) |
c316a17c | 13517 | goto copy_reloc; |
ab96bf03 | 13518 | |
f40da81b AM |
13519 | if (h != NULL && &h->elf == htab->elf.hgot) |
13520 | { | |
6f20ed8a | 13521 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
13522 | sec = bfd_abs_section_ptr; |
13523 | unresolved_reloc = FALSE; | |
13524 | } | |
13525 | ||
951fd09b AM |
13526 | /* TLS optimizations. Replace instruction sequences and relocs |
13527 | based on information we collected in tls_optimize. We edit | |
13528 | RELOCS so that --emit-relocs will output something sensible | |
13529 | for the final instruction stream. */ | |
13530 | tls_mask = 0; | |
13531 | tls_gd = 0; | |
0d4792f7 | 13532 | toc_symndx = 0; |
727fc41e AM |
13533 | if (h != NULL) |
13534 | tls_mask = h->tls_mask; | |
13535 | else if (local_got_ents != NULL) | |
411e1bfb | 13536 | { |
e054468f AM |
13537 | struct plt_entry **local_plt = (struct plt_entry **) |
13538 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13539 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13540 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13541 | tls_mask = lgot_masks[r_symndx]; |
13542 | } | |
37da22e5 | 13543 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
13544 | && (r_type == R_PPC64_TLS |
13545 | || r_type == R_PPC64_TLSGD | |
13546 | || r_type == R_PPC64_TLSLD)) | |
13547 | { | |
13548 | /* Check for toc tls entries. */ | |
f961d9dd | 13549 | unsigned char *toc_tls; |
0d4792f7 | 13550 | |
727fc41e AM |
13551 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13552 | &local_syms, rel, input_bfd)) | |
13553 | return FALSE; | |
0d4792f7 | 13554 | |
727fc41e AM |
13555 | if (toc_tls) |
13556 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13557 | } |
13558 | ||
13559 | /* Check that tls relocs are used with tls syms, and non-tls | |
13560 | relocs are used with non-tls syms. */ | |
cf35638d | 13561 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13562 | && r_type != R_PPC64_NONE |
13563 | && (h == NULL | |
039b3fef AM |
13564 | || h->elf.root.type == bfd_link_hash_defined |
13565 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13566 | && (IS_PPC64_TLS_RELOC (r_type) |
13567 | != (sym_type == STT_TLS | |
13568 | || (sym_type == STT_SECTION | |
13569 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13570 | { |
37da22e5 | 13571 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
13572 | && (r_type == R_PPC64_TLS |
13573 | || r_type == R_PPC64_TLSGD | |
13574 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13575 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13576 | ; | |
13577 | else | |
25f53a85 | 13578 | info->callbacks->einfo |
1d483afe | 13579 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 13580 | /* xgettext:c-format */ |
c1c8c1ef | 13581 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 13582 | /* xgettext:c-format */ |
c1c8c1ef | 13583 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 13584 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13585 | ppc64_elf_howto_table[r_type]->name, |
13586 | sym_name); | |
411e1bfb AM |
13587 | } |
13588 | ||
13589 | /* Ensure reloc mapping code below stays sane. */ | |
13590 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13591 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13592 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13593 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13594 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13595 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13596 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13597 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13598 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13599 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13600 | abort (); | |
0d4792f7 | 13601 | |
411e1bfb AM |
13602 | switch (r_type) |
13603 | { | |
13604 | default: | |
411e1bfb AM |
13605 | break; |
13606 | ||
ba761f19 | 13607 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 13608 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
13609 | if ((insn & (0x3f << 26)) != 58u << 26) |
13610 | abort (); | |
13611 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 13612 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
13613 | r_type = R_PPC64_TOC16_LO; |
13614 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13615 | break; | |
13616 | ||
411e1bfb AM |
13617 | case R_PPC64_TOC16: |
13618 | case R_PPC64_TOC16_LO: | |
13619 | case R_PPC64_TOC16_DS: | |
13620 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13621 | { |
13622 | /* Check for toc tls entries. */ | |
f961d9dd | 13623 | unsigned char *toc_tls; |
951fd09b | 13624 | int retval; |
411e1bfb | 13625 | |
3a71aa26 AM |
13626 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13627 | &local_syms, rel, input_bfd); | |
951fd09b | 13628 | if (retval == 0) |
411e1bfb AM |
13629 | return FALSE; |
13630 | ||
13631 | if (toc_tls) | |
13632 | { | |
951fd09b | 13633 | tls_mask = *toc_tls; |
411e1bfb AM |
13634 | if (r_type == R_PPC64_TOC16_DS |
13635 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 13636 | { |
37da22e5 | 13637 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
13638 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
13639 | goto toctprel; | |
13640 | } | |
411e1bfb | 13641 | else |
951fd09b AM |
13642 | { |
13643 | /* If we found a GD reloc pair, then we might be | |
13644 | doing a GD->IE transition. */ | |
13645 | if (retval == 2) | |
13646 | { | |
13647 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
13648 | if ((tls_mask & TLS_TLS) != 0 |
13649 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13650 | goto tls_ldgd_opt; |
951fd09b AM |
13651 | } |
13652 | else if (retval == 3) | |
13653 | { | |
37da22e5 AM |
13654 | if ((tls_mask & TLS_TLS) != 0 |
13655 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13656 | goto tls_ldgd_opt; |
951fd09b AM |
13657 | } |
13658 | } | |
411e1bfb AM |
13659 | } |
13660 | } | |
13661 | break; | |
13662 | ||
9d6ded02 AM |
13663 | case R_PPC64_GOT_TPREL16_HI: |
13664 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 13665 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
13666 | && (tls_mask & TLS_TPREL) == 0) |
13667 | { | |
13668 | rel->r_offset -= d_offset; | |
95f0d0d2 | 13669 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
13670 | r_type = R_PPC64_NONE; |
13671 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13672 | } | |
13673 | break; | |
13674 | ||
411e1bfb AM |
13675 | case R_PPC64_GOT_TPREL16_DS: |
13676 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 13677 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 13678 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 13679 | { |
81407a69 | 13680 | toctprel: |
95f0d0d2 | 13681 | insn = bfd_get_32 (input_bfd, |
c316a17c | 13682 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
13683 | insn &= 31 << 21; |
13684 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 13685 | bfd_put_32 (input_bfd, insn, |
c316a17c | 13686 | contents + rel->r_offset - d_offset); |
411e1bfb | 13687 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13688 | if (toc_symndx != 0) |
13689 | { | |
13690 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13691 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13692 | /* We changed the symbol. Start over in order to |
13693 | get h, sym, sec etc. right. */ | |
c316a17c | 13694 | goto again; |
0d4792f7 AM |
13695 | } |
13696 | else | |
13697 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13698 | } |
13699 | break; | |
13700 | ||
13701 | case R_PPC64_TLS: | |
37da22e5 | 13702 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 13703 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 13704 | { |
95f0d0d2 | 13705 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13706 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13707 | if (insn == 0) | |
411e1bfb | 13708 | abort (); |
95f0d0d2 | 13709 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13710 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13711 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13712 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13713 | r_type = R_PPC64_TPREL16_LO; |
13714 | if (toc_symndx != 0) | |
13715 | { | |
13716 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13717 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13718 | /* We changed the symbol. Start over in order to |
13719 | get h, sym, sec etc. right. */ | |
c316a17c | 13720 | goto again; |
0d4792f7 AM |
13721 | } |
13722 | else | |
13723 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13724 | } |
13725 | break; | |
13726 | ||
411e1bfb AM |
13727 | case R_PPC64_GOT_TLSGD16_HI: |
13728 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13729 | tls_gd = TLS_TPRELGD; |
37da22e5 | 13730 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
13731 | goto tls_gdld_hi; |
13732 | break; | |
13733 | ||
411e1bfb AM |
13734 | case R_PPC64_GOT_TLSLD16_HI: |
13735 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 13736 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13737 | { |
951fd09b AM |
13738 | tls_gdld_hi: |
13739 | if ((tls_mask & tls_gd) != 0) | |
13740 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13741 | + R_PPC64_GOT_TPREL16_DS); | |
13742 | else | |
411e1bfb | 13743 | { |
4fe5ca5b | 13744 | rel->r_offset -= d_offset; |
95f0d0d2 | 13745 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13746 | r_type = R_PPC64_NONE; |
411e1bfb | 13747 | } |
951fd09b | 13748 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13749 | } |
13750 | break; | |
13751 | ||
951fd09b AM |
13752 | case R_PPC64_GOT_TLSGD16: |
13753 | case R_PPC64_GOT_TLSGD16_LO: | |
13754 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 13755 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 13756 | goto tls_ldgd_opt; |
951fd09b | 13757 | break; |
411e1bfb | 13758 | |
951fd09b AM |
13759 | case R_PPC64_GOT_TLSLD16: |
13760 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 13761 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 13762 | { |
b9f04fe0 | 13763 | unsigned int insn1, insn2; |
102890f0 AM |
13764 | bfd_vma offset; |
13765 | ||
13766 | tls_ldgd_opt: | |
727fc41e AM |
13767 | offset = (bfd_vma) -1; |
13768 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13769 | __tls_get_addr calls, we must trust that the call | |
13770 | stays with its arg setup insns, ie. that the next | |
13771 | reloc is the __tls_get_addr call associated with | |
13772 | the current reloc. Edit both insns. */ | |
13773 | if (input_section->has_tls_get_addr_call | |
13774 | && rel + 1 < relend | |
13775 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13776 | htab->tls_get_addr, | |
13777 | htab->tls_get_addr_fd)) | |
13778 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
13779 | /* We read the low GOT_TLS (or TOC16) insn because we |
13780 | need to keep the destination reg. It may be | |
13781 | something other than the usual r3, and moved to r3 | |
13782 | before the call by intervening code. */ | |
95f0d0d2 | 13783 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 13784 | contents + rel->r_offset - d_offset); |
102890f0 | 13785 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13786 | { |
102890f0 | 13787 | /* IE */ |
b86ac8e3 | 13788 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
13789 | insn1 |= 58 << 26; /* ld */ |
13790 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13791 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13792 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13793 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13794 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13795 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13796 | else |
102890f0 AM |
13797 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13798 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13799 | } | |
13800 | else | |
13801 | { | |
13802 | /* LE */ | |
b86ac8e3 AM |
13803 | insn1 &= 0x1f << 21; |
13804 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
13805 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13806 | if (tls_gd == 0) | |
951fd09b | 13807 | { |
102890f0 | 13808 | /* Was an LD reloc. */ |
1d483afe AM |
13809 | if (toc_symndx) |
13810 | sec = local_sections[toc_symndx]; | |
13811 | for (r_symndx = 0; | |
13812 | r_symndx < symtab_hdr->sh_info; | |
13813 | r_symndx++) | |
13814 | if (local_sections[r_symndx] == sec) | |
13815 | break; | |
13816 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13817 | r_symndx = STN_UNDEF; |
102890f0 | 13818 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13819 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13820 | rel->r_addend -= (local_syms[r_symndx].st_value |
13821 | + sec->output_offset | |
13822 | + sec->output_section->vma); | |
951fd09b | 13823 | } |
102890f0 | 13824 | else if (toc_symndx != 0) |
3a71aa26 AM |
13825 | { |
13826 | r_symndx = toc_symndx; | |
13827 | rel->r_addend = toc_addend; | |
13828 | } | |
102890f0 AM |
13829 | r_type = R_PPC64_TPREL16_HA; |
13830 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13831 | if (offset != (bfd_vma) -1) |
13832 | { | |
13833 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13834 | R_PPC64_TPREL16_LO); | |
13835 | rel[1].r_offset = offset + d_offset; | |
13836 | rel[1].r_addend = rel->r_addend; | |
13837 | } | |
102890f0 | 13838 | } |
95f0d0d2 | 13839 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 13840 | contents + rel->r_offset - d_offset); |
727fc41e | 13841 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
13842 | { |
13843 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
13844 | if (offset + 8 <= input_section->size) | |
13845 | { | |
13846 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
13847 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
13848 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
13849 | } | |
13850 | } | |
727fc41e AM |
13851 | if ((tls_mask & tls_gd) == 0 |
13852 | && (tls_gd == 0 || toc_symndx != 0)) | |
13853 | { | |
13854 | /* We changed the symbol. Start over in order | |
13855 | to get h, sym, sec etc. right. */ | |
c316a17c | 13856 | goto again; |
727fc41e AM |
13857 | } |
13858 | } | |
13859 | break; | |
13860 | ||
13861 | case R_PPC64_TLSGD: | |
37da22e5 | 13862 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 13863 | && rel + 1 < relend) |
727fc41e | 13864 | { |
b9f04fe0 | 13865 | unsigned int insn2; |
727fc41e AM |
13866 | bfd_vma offset = rel->r_offset; |
13867 | ||
23cedd1d AM |
13868 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
13869 | { | |
13870 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
13871 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
13872 | break; | |
13873 | } | |
13874 | ||
13875 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
13876 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
13877 | ||
727fc41e AM |
13878 | if ((tls_mask & TLS_TPRELGD) != 0) |
13879 | { | |
13880 | /* IE */ | |
13881 | r_type = R_PPC64_NONE; | |
13882 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13883 | } | |
13884 | else | |
13885 | { | |
13886 | /* LE */ | |
13887 | if (toc_symndx != 0) | |
13888 | { | |
13889 | r_symndx = toc_symndx; | |
13890 | rel->r_addend = toc_addend; | |
13891 | } | |
13892 | r_type = R_PPC64_TPREL16_LO; | |
13893 | rel->r_offset = offset + d_offset; | |
13894 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13895 | } | |
13896 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13897 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13898 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13899 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 13900 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 13901 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 13902 | goto again; |
411e1bfb | 13903 | } |
411e1bfb AM |
13904 | break; |
13905 | ||
727fc41e | 13906 | case R_PPC64_TLSLD: |
37da22e5 | 13907 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 13908 | && rel + 1 < relend) |
727fc41e | 13909 | { |
b9f04fe0 | 13910 | unsigned int insn2; |
727fc41e AM |
13911 | bfd_vma offset = rel->r_offset; |
13912 | ||
23cedd1d AM |
13913 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
13914 | { | |
13915 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
13916 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
13917 | break; | |
13918 | } | |
13919 | ||
13920 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
13921 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
13922 | ||
727fc41e AM |
13923 | if (toc_symndx) |
13924 | sec = local_sections[toc_symndx]; | |
13925 | for (r_symndx = 0; | |
13926 | r_symndx < symtab_hdr->sh_info; | |
13927 | r_symndx++) | |
13928 | if (local_sections[r_symndx] == sec) | |
13929 | break; | |
13930 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13931 | r_symndx = STN_UNDEF; |
727fc41e | 13932 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13933 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13934 | rel->r_addend -= (local_syms[r_symndx].st_value |
13935 | + sec->output_offset | |
13936 | + sec->output_section->vma); | |
13937 | ||
13938 | r_type = R_PPC64_TPREL16_LO; | |
13939 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13940 | rel->r_offset = offset + d_offset; | |
13941 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13942 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13943 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 13944 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 13945 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 13946 | goto again; |
727fc41e AM |
13947 | } |
13948 | break; | |
13949 | ||
411e1bfb | 13950 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13951 | if (rel + 1 < relend |
13952 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13953 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13954 | { |
951fd09b AM |
13955 | if ((tls_mask & TLS_GD) == 0) |
13956 | { | |
13957 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13958 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13959 | r_type = R_PPC64_TPREL64; | |
13960 | else | |
13961 | { | |
4ce794b7 | 13962 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13963 | r_type = R_PPC64_NONE; |
13964 | } | |
13965 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13966 | } | |
13967 | } | |
13968 | else | |
13969 | { | |
13970 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13971 | { |
4ce794b7 | 13972 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13973 | r_type = R_PPC64_NONE; |
951fd09b | 13974 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13975 | } |
411e1bfb AM |
13976 | } |
13977 | break; | |
13978 | ||
13979 | case R_PPC64_TPREL64: | |
951fd09b | 13980 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13981 | { |
13982 | r_type = R_PPC64_NONE; | |
13983 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13984 | } | |
13985 | break; | |
52a82034 | 13986 | |
006589cf AM |
13987 | case R_PPC64_ENTRY: |
13988 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
13989 | if (!bfd_link_pic (info) | |
13990 | && !info->traditional_format | |
13991 | && relocation + 0x80008000 <= 0xffffffff) | |
13992 | { | |
13993 | unsigned int insn1, insn2; | |
13994 | ||
13995 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13996 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
13997 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
13998 | && insn2 == ADD_R2_R2_R12) | |
13999 | { | |
95f0d0d2 | 14000 | bfd_put_32 (input_bfd, |
006589cf AM |
14001 | LIS_R2 + PPC_HA (relocation), |
14002 | contents + rel->r_offset); | |
95f0d0d2 | 14003 | bfd_put_32 (input_bfd, |
006589cf AM |
14004 | ADDI_R2_R2 + PPC_LO (relocation), |
14005 | contents + rel->r_offset + 4); | |
14006 | } | |
14007 | } | |
14008 | else | |
14009 | { | |
14010 | relocation -= (rel->r_offset | |
14011 | + input_section->output_offset | |
14012 | + input_section->output_section->vma); | |
14013 | if (relocation + 0x80008000 <= 0xffffffff) | |
14014 | { | |
14015 | unsigned int insn1, insn2; | |
14016 | ||
14017 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14018 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14019 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14020 | && insn2 == ADD_R2_R2_R12) | |
14021 | { | |
95f0d0d2 | 14022 | bfd_put_32 (input_bfd, |
006589cf AM |
14023 | ADDIS_R2_R12 + PPC_HA (relocation), |
14024 | contents + rel->r_offset); | |
95f0d0d2 | 14025 | bfd_put_32 (input_bfd, |
006589cf AM |
14026 | ADDI_R2_R2 + PPC_LO (relocation), |
14027 | contents + rel->r_offset + 4); | |
14028 | } | |
14029 | } | |
14030 | } | |
14031 | break; | |
14032 | ||
52a82034 AM |
14033 | case R_PPC64_REL16_HA: |
14034 | /* If we are generating a non-PIC executable, edit | |
14035 | . 0: addis 2,12,.TOC.-0b@ha | |
14036 | . addi 2,2,.TOC.-0b@l | |
14037 | used by ELFv2 global entry points to set up r2, to | |
14038 | . lis 2,.TOC.@ha | |
14039 | . addi 2,2,.TOC.@l | |
14040 | if .TOC. is in range. */ | |
0e1862bb | 14041 | if (!bfd_link_pic (info) |
810d4e75 | 14042 | && !info->traditional_format |
006589cf | 14043 | && !htab->opd_abi |
4f038ee5 | 14044 | && rel->r_addend == d_offset |
52a82034 AM |
14045 | && h != NULL && &h->elf == htab->elf.hgot |
14046 | && rel + 1 < relend | |
14047 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14048 | && rel[1].r_offset == rel->r_offset + 4 | |
14049 | && rel[1].r_addend == rel->r_addend + 4 | |
14050 | && relocation + 0x80008000 <= 0xffffffff) | |
14051 | { | |
14052 | unsigned int insn1, insn2; | |
14053 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
14054 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14055 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14056 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14057 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14058 | { |
14059 | r_type = R_PPC64_ADDR16_HA; | |
14060 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14061 | rel->r_addend -= d_offset; | |
14062 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14063 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14064 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14065 | } |
14066 | } | |
14067 | break; | |
411e1bfb AM |
14068 | } |
14069 | ||
14070 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14071 | insn = 0; |
b25116a9 AM |
14072 | max_br_offset = 1 << 25; |
14073 | addend = rel->r_addend; | |
bc30df16 | 14074 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14075 | switch (r_type) |
5bd4f169 AM |
14076 | { |
14077 | default: | |
65f38f15 | 14078 | break; |
5bd4f169 | 14079 | |
3b421ab3 AM |
14080 | case R_PPC64_TOCSAVE: |
14081 | if (relocation + addend == (rel->r_offset | |
14082 | + input_section->output_offset | |
14083 | + input_section->output_section->vma) | |
14084 | && tocsave_find (htab, NO_INSERT, | |
14085 | &local_syms, rel, input_bfd)) | |
14086 | { | |
14087 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14088 | if (insn == NOP | |
14089 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14090 | bfd_put_32 (input_bfd, |
14091 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14092 | contents + rel->r_offset); |
14093 | } | |
14094 | break; | |
14095 | ||
65f38f15 AM |
14096 | /* Branch taken prediction relocations. */ |
14097 | case R_PPC64_ADDR14_BRTAKEN: | |
14098 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14099 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14100 | /* Fall through. */ |
65f38f15 | 14101 | |
86c76c7b | 14102 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14103 | case R_PPC64_ADDR14_BRNTAKEN: |
14104 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14105 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14106 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14107 | /* Fall through. */ |
86c76c7b | 14108 | |
b25116a9 AM |
14109 | case R_PPC64_REL14: |
14110 | max_br_offset = 1 << 15; | |
1a0670f3 | 14111 | /* Fall through. */ |
5bd4f169 | 14112 | |
65f38f15 | 14113 | case R_PPC64_REL24: |
05d0e962 | 14114 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 14115 | case R_PPC64_PLTCALL: |
ad8e1ba5 AM |
14116 | /* Calls to functions with a different TOC, such as calls to |
14117 | shared objects, need to alter the TOC pointer. This is | |
14118 | done using a linkage stub. A REL24 branching to these | |
14119 | linkage stubs needs to be followed by a nop, as the nop | |
14120 | will be replaced with an instruction to restore the TOC | |
14121 | base pointer. */ | |
8387904d | 14122 | fdh = h; |
b31867b6 AM |
14123 | if (h != NULL |
14124 | && h->oh != NULL | |
14125 | && h->oh->is_func_descriptor) | |
14126 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14127 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14128 | htab); | |
23cedd1d AM |
14129 | if (r_type == R_PPC64_PLTCALL |
14130 | && stub_entry != NULL | |
05d0e962 AM |
14131 | && stub_entry->stub_type >= ppc_stub_plt_call |
14132 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
14133 | stub_entry = NULL; |
14134 | ||
6abec6bc | 14135 | if (stub_entry != NULL |
d0abeec8 AM |
14136 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
14137 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 14138 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
14139 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
14140 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
14141 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 14142 | { |
b25116a9 | 14143 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14144 | |
6e1816be AM |
14145 | if (stub_entry->stub_type == ppc_stub_plt_call |
14146 | && !htab->opd_abi | |
14147 | && htab->params->plt_localentry0 != 0 | |
14148 | && is_elfv2_localentry0 (&h->elf)) | |
14149 | { | |
14150 | /* The function doesn't use or change r2. */ | |
14151 | can_plt_call = TRUE; | |
14152 | } | |
05d0e962 AM |
14153 | else if (r_type == R_PPC64_REL24_NOTOC) |
14154 | { | |
14155 | /* NOTOC calls don't need to restore r2. */ | |
14156 | can_plt_call = TRUE; | |
14157 | } | |
6e1816be | 14158 | |
f378ab09 | 14159 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
14160 | branch and link followed by a nop. The nop is |
14161 | replaced by an insn to restore r2. */ | |
6e1816be | 14162 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14163 | { |
ba8ca3e7 AM |
14164 | unsigned long br; |
14165 | ||
14166 | br = bfd_get_32 (input_bfd, | |
14167 | contents + rel->r_offset); | |
14168 | if ((br & 1) != 0) | |
41bd81ab | 14169 | { |
ba8ca3e7 AM |
14170 | unsigned long nop; |
14171 | ||
14172 | nop = bfd_get_32 (input_bfd, | |
14173 | contents + rel->r_offset + 4); | |
23cedd1d AM |
14174 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
14175 | can_plt_call = TRUE; | |
14176 | else if (nop == NOP | |
14177 | || nop == CROR_151515 | |
14178 | || nop == CROR_313131) | |
a7f2871e | 14179 | { |
ba8ca3e7 AM |
14180 | if (h != NULL |
14181 | && (h == htab->tls_get_addr_fd | |
14182 | || h == htab->tls_get_addr) | |
7c9cf415 | 14183 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14184 | { |
14185 | /* Special stub used, leave nop alone. */ | |
14186 | } | |
14187 | else | |
a078d95a AM |
14188 | bfd_put_32 (input_bfd, |
14189 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14190 | contents + rel->r_offset + 4); |
14191 | can_plt_call = TRUE; | |
a7f2871e | 14192 | } |
41bd81ab | 14193 | } |
5bd4f169 | 14194 | } |
721956f4 | 14195 | |
ba8ca3e7 | 14196 | if (!can_plt_call && h != NULL) |
721956f4 | 14197 | { |
ba8ca3e7 AM |
14198 | const char *name = h->elf.root.root.string; |
14199 | ||
14200 | if (*name == '.') | |
14201 | ++name; | |
14202 | ||
14203 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14204 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14205 | { |
ba8ca3e7 AM |
14206 | /* Allow crt1 branch to go via a toc adjusting |
14207 | stub. Other calls that never return could do | |
14208 | the same, if we could detect such. */ | |
b25116a9 | 14209 | can_plt_call = TRUE; |
6ab189d5 | 14210 | } |
ba8ca3e7 AM |
14211 | } |
14212 | ||
14213 | if (!can_plt_call) | |
14214 | { | |
14215 | /* g++ as of 20130507 emits self-calls without a | |
14216 | following nop. This is arguably wrong since we | |
14217 | have conflicting information. On the one hand a | |
14218 | global symbol and on the other a local call | |
14219 | sequence, but don't error for this special case. | |
14220 | It isn't possible to cheaply verify we have | |
14221 | exactly such a call. Allow all calls to the same | |
14222 | section. */ | |
14223 | asection *code_sec = sec; | |
14224 | ||
14225 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14226 | { |
ba8ca3e7 AM |
14227 | bfd_vma off = (relocation + addend |
14228 | - sec->output_section->vma | |
14229 | - sec->output_offset); | |
bc30df16 | 14230 | |
ba8ca3e7 | 14231 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14232 | } |
ba8ca3e7 AM |
14233 | if (code_sec == input_section) |
14234 | can_plt_call = TRUE; | |
14235 | } | |
14236 | ||
14237 | if (!can_plt_call) | |
14238 | { | |
05d0e962 AM |
14239 | if (stub_entry->stub_type >= ppc_stub_plt_call |
14240 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 14241 | info->callbacks->einfo |
695344c0 | 14242 | /* xgettext:c-format */ |
c1c8c1ef | 14243 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 14244 | "(plt call stub)\n"), |
4805fc55 AM |
14245 | input_bfd, input_section, rel->r_offset, sym_name); |
14246 | else | |
14247 | info->callbacks->einfo | |
695344c0 | 14248 | /* xgettext:c-format */ |
c1c8c1ef | 14249 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 14250 | "(toc save/adjust stub)\n"), |
4805fc55 | 14251 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
14252 | |
14253 | bfd_set_error (bfd_error_bad_value); | |
14254 | ret = FALSE; | |
721956f4 AM |
14255 | } |
14256 | ||
b25116a9 | 14257 | if (can_plt_call |
05d0e962 AM |
14258 | && stub_entry->stub_type >= ppc_stub_plt_call |
14259 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
14260 | unresolved_reloc = FALSE; |
14261 | } | |
14262 | ||
6abec6bc AM |
14263 | if ((stub_entry == NULL |
14264 | || stub_entry->stub_type == ppc_stub_long_branch | |
14265 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14266 | && get_opd_info (sec) != NULL) |
14267 | { | |
14268 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14269 | bfd_vma off = (relocation + addend |
14270 | - sec->output_section->vma | |
14271 | - sec->output_offset); | |
aef36ac1 | 14272 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14273 | if (dest != (bfd_vma) -1) |
14274 | { | |
14275 | relocation = dest; | |
14276 | addend = 0; | |
bc30df16 | 14277 | reloc_dest = DEST_OPD; |
8387904d AM |
14278 | } |
14279 | } | |
14280 | ||
b25116a9 AM |
14281 | /* If the branch is out of reach we ought to have a long |
14282 | branch stub. */ | |
14283 | from = (rel->r_offset | |
14284 | + input_section->output_offset | |
14285 | + input_section->output_section->vma); | |
14286 | ||
6911b7dc AM |
14287 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14288 | ? fdh->elf.other | |
14289 | : sym->st_other); | |
14290 | ||
6abec6bc AM |
14291 | if (stub_entry != NULL |
14292 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14293 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14294 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14295 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14296 | || (relocation + addend - from + max_br_offset | |
14297 | < 2 * max_br_offset))) | |
14298 | /* Don't use the stub if this branch is in range. */ | |
14299 | stub_entry = NULL; | |
b25116a9 | 14300 | |
05d0e962 AM |
14301 | if (stub_entry != NULL |
14302 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
14303 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
14304 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
14305 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
14306 | && (r_type != R_PPC64_REL24_NOTOC | |
14307 | || ((fdh ? fdh->elf.other : sym->st_other) | |
14308 | & STO_PPC64_LOCAL_MASK) == 1 << STO_PPC64_LOCAL_BIT) | |
14309 | && (relocation + addend - from + max_br_offset | |
14310 | < 2 * max_br_offset)) | |
14311 | stub_entry = NULL; | |
14312 | ||
14313 | if (stub_entry != NULL | |
14314 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
14315 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
14316 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
14317 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
14318 | && r_type == R_PPC64_REL24_NOTOC | |
14319 | && (relocation + addend - from + max_br_offset | |
14320 | < 2 * max_br_offset)) | |
14321 | stub_entry = NULL; | |
14322 | ||
b25116a9 AM |
14323 | if (stub_entry != NULL) |
14324 | { | |
14325 | /* Munge up the value and addend so that we call the stub | |
14326 | rather than the procedure directly. */ | |
a4b6fadd AM |
14327 | asection *stub_sec = stub_entry->group->stub_sec; |
14328 | ||
14329 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14330 | relocation += (stub_sec->output_offset | |
14331 | + stub_sec->output_section->vma | |
14332 | + stub_sec->size - htab->sfpr->size | |
14333 | - htab->sfpr->output_offset | |
14334 | - htab->sfpr->output_section->vma); | |
14335 | else | |
14336 | relocation = (stub_entry->stub_offset | |
14337 | + stub_sec->output_offset | |
14338 | + stub_sec->output_section->vma); | |
b25116a9 | 14339 | addend = 0; |
bc30df16 | 14340 | reloc_dest = DEST_STUB; |
3b421ab3 | 14341 | |
05d0e962 AM |
14342 | if (((stub_entry->stub_type == ppc_stub_plt_call |
14343 | && ALWAYS_EMIT_R2SAVE) | |
14344 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
14345 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 AM |
14346 | && !(h != NULL |
14347 | && (h == htab->tls_get_addr_fd | |
14348 | || h == htab->tls_get_addr) | |
14349 | && htab->params->tls_get_addr_opt) | |
3b421ab3 AM |
14350 | && rel + 1 < relend |
14351 | && rel[1].r_offset == rel->r_offset + 4 | |
14352 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14353 | relocation += 4; | |
05d0e962 AM |
14354 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
14355 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
14356 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
14357 | && r_type == R_PPC64_REL24_NOTOC) | |
14358 | relocation += 4; | |
b25116a9 AM |
14359 | } |
14360 | ||
14361 | if (insn != 0) | |
14362 | { | |
794e51c0 | 14363 | if (is_isa_v2) |
721956f4 | 14364 | { |
b25116a9 AM |
14365 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14366 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14367 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14368 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14369 | insn |= 0x02 << 21; | |
14370 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14371 | insn |= 0x08 << 21; | |
14372 | else | |
14373 | break; | |
14374 | } | |
14375 | else | |
14376 | { | |
14377 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14378 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14379 | insn ^= 0x01 << 21; |
721956f4 | 14380 | } |
b25116a9 | 14381 | |
95f0d0d2 | 14382 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14383 | } |
e86ce104 | 14384 | |
06da1e8e AM |
14385 | /* NOP out calls to undefined weak functions. |
14386 | We can thus call a weak function without first | |
14387 | checking whether the function is defined. */ | |
b25116a9 | 14388 | else if (h != NULL |
039b3fef | 14389 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14390 | && h->elf.dynindx == -1 |
05d0e962 AM |
14391 | && (r_type == R_PPC64_REL24 |
14392 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 14393 | && relocation == 0 |
4cc603a5 | 14394 | && addend == 0) |
e86ce104 | 14395 | { |
95f0d0d2 | 14396 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14397 | goto copy_reloc; |
e86ce104 | 14398 | } |
65f38f15 AM |
14399 | break; |
14400 | } | |
5bd4f169 | 14401 | |
65f38f15 | 14402 | /* Set `addend'. */ |
411e1bfb | 14403 | tls_type = 0; |
23cedd1d | 14404 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
14405 | switch (r_type) |
14406 | { | |
14407 | default: | |
cf97bcb0 AM |
14408 | /* xgettext:c-format */ |
14409 | _bfd_error_handler (_("%pB: %s unsupported"), | |
14410 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 14411 | |
65f38f15 | 14412 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14413 | ret = FALSE; |
c316a17c | 14414 | goto copy_reloc; |
5bd4f169 | 14415 | |
65f38f15 | 14416 | case R_PPC64_NONE: |
411e1bfb | 14417 | case R_PPC64_TLS: |
727fc41e AM |
14418 | case R_PPC64_TLSGD: |
14419 | case R_PPC64_TLSLD: | |
3b421ab3 | 14420 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14421 | case R_PPC64_GNU_VTINHERIT: |
14422 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14423 | case R_PPC64_ENTRY: |
c316a17c | 14424 | goto copy_reloc; |
5bd4f169 AM |
14425 | |
14426 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14427 | address in the GOT as relocation value instead of the | |
411e1bfb | 14428 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14429 | symbol and put the symbol value there. */ |
411e1bfb AM |
14430 | case R_PPC64_GOT_TLSGD16: |
14431 | case R_PPC64_GOT_TLSGD16_LO: | |
14432 | case R_PPC64_GOT_TLSGD16_HI: | |
14433 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14434 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14435 | goto dogot; |
14436 | ||
14437 | case R_PPC64_GOT_TLSLD16: | |
14438 | case R_PPC64_GOT_TLSLD16_LO: | |
14439 | case R_PPC64_GOT_TLSLD16_HI: | |
14440 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14441 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14442 | goto dogot; |
14443 | ||
14444 | case R_PPC64_GOT_TPREL16_DS: | |
14445 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14446 | case R_PPC64_GOT_TPREL16_HI: | |
14447 | case R_PPC64_GOT_TPREL16_HA: | |
14448 | tls_type = TLS_TLS | TLS_TPREL; | |
14449 | goto dogot; | |
14450 | ||
14451 | case R_PPC64_GOT_DTPREL16_DS: | |
14452 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14453 | case R_PPC64_GOT_DTPREL16_HI: | |
14454 | case R_PPC64_GOT_DTPREL16_HA: | |
14455 | tls_type = TLS_TLS | TLS_DTPREL; | |
14456 | goto dogot; | |
14457 | ||
65f38f15 AM |
14458 | case R_PPC64_GOT16: |
14459 | case R_PPC64_GOT16_LO: | |
14460 | case R_PPC64_GOT16_HI: | |
14461 | case R_PPC64_GOT16_HA: | |
14462 | case R_PPC64_GOT16_DS: | |
14463 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14464 | dogot: |
5bd4f169 AM |
14465 | { |
14466 | /* Relocation is to the entry for this symbol in the global | |
14467 | offset table. */ | |
e717da7e | 14468 | asection *got; |
d881513a | 14469 | bfd_vma *offp; |
5bd4f169 | 14470 | bfd_vma off; |
d881513a | 14471 | unsigned long indx = 0; |
927be08e | 14472 | struct got_entry *ent; |
65f38f15 | 14473 | |
d881513a AM |
14474 | if (tls_type == (TLS_TLS | TLS_LD) |
14475 | && (h == NULL | |
f5385ebf | 14476 | || !h->elf.def_dynamic)) |
927be08e | 14477 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14478 | else |
5bd4f169 | 14479 | { |
d881513a AM |
14480 | if (h != NULL) |
14481 | { | |
f0158f44 AM |
14482 | if (!htab->elf.dynamic_sections_created |
14483 | || h->elf.dynindx == -1 | |
14484 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 14485 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
14486 | /* This is actually a static link, or it is a |
14487 | -Bsymbolic link and the symbol is defined | |
14488 | locally, or the symbol was forced to be local | |
14489 | because of a version file. */ | |
14490 | ; | |
14491 | else | |
14492 | { | |
039b3fef | 14493 | indx = h->elf.dynindx; |
d881513a AM |
14494 | unresolved_reloc = FALSE; |
14495 | } | |
039b3fef | 14496 | ent = h->elf.got.glist; |
d881513a | 14497 | } |
411e1bfb | 14498 | else |
5bd4f169 | 14499 | { |
d881513a AM |
14500 | if (local_got_ents == NULL) |
14501 | abort (); | |
14502 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 14503 | } |
d881513a AM |
14504 | |
14505 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 14506 | if (ent->addend == orig_rel.r_addend |
e717da7e | 14507 | && ent->owner == input_bfd |
d881513a AM |
14508 | && ent->tls_type == tls_type) |
14509 | break; | |
5bd4f169 | 14510 | } |
411e1bfb | 14511 | |
927be08e AM |
14512 | if (ent == NULL) |
14513 | abort (); | |
14514 | if (ent->is_indirect) | |
14515 | ent = ent->got.ent; | |
14516 | offp = &ent->got.offset; | |
14517 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
14518 | if (got == NULL) |
14519 | abort (); | |
14520 | ||
411e1bfb AM |
14521 | /* The offset must always be a multiple of 8. We use the |
14522 | least significant bit to record whether we have already | |
14523 | processed this entry. */ | |
d881513a | 14524 | off = *offp; |
411e1bfb AM |
14525 | if ((off & 1) != 0) |
14526 | off &= ~1; | |
5bd4f169 AM |
14527 | else |
14528 | { | |
411e1bfb AM |
14529 | /* Generate relocs for the dynamic linker, except in |
14530 | the case of TLSLD where we'll use one entry per | |
14531 | module. */ | |
25f23106 AM |
14532 | asection *relgot; |
14533 | bfd_boolean ifunc; | |
e717da7e | 14534 | |
d881513a | 14535 | *offp = off | 1; |
25f23106 AM |
14536 | relgot = NULL; |
14537 | ifunc = (h != NULL | |
14538 | ? h->elf.type == STT_GNU_IFUNC | |
14539 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 14540 | if (ifunc) |
82e66161 AM |
14541 | { |
14542 | relgot = htab->elf.irelplt; | |
14543 | if (indx == 0) | |
14544 | htab->local_ifunc_resolver = 1; | |
14545 | else if (is_static_defined (&h->elf)) | |
14546 | htab->maybe_local_ifunc_resolver = 1; | |
14547 | } | |
f0158f44 AM |
14548 | else if (indx != 0 |
14549 | || (bfd_link_pic (info) | |
14550 | && (h == NULL | |
21d68fcd | 14551 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 14552 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
14553 | && !h->elf.def_dynamic)) |
14554 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
14555 | && bfd_link_executable (info) | |
14556 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 14557 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 14558 | if (relgot != NULL) |
5bd4f169 | 14559 | { |
e717da7e AM |
14560 | outrel.r_offset = (got->output_section->vma |
14561 | + got->output_offset | |
411e1bfb | 14562 | + off); |
4cc603a5 | 14563 | outrel.r_addend = addend; |
d881513a | 14564 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 14565 | { |
411e1bfb | 14566 | outrel.r_addend = 0; |
e515b051 | 14567 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
14568 | if (tls_type == (TLS_TLS | TLS_GD)) |
14569 | { | |
e717da7e AM |
14570 | loc = relgot->contents; |
14571 | loc += (relgot->reloc_count++ | |
d881513a AM |
14572 | * sizeof (Elf64_External_Rela)); |
14573 | bfd_elf64_swap_reloca_out (output_bfd, | |
14574 | &outrel, loc); | |
e515b051 | 14575 | outrel.r_offset += 8; |
4cc603a5 | 14576 | outrel.r_addend = addend; |
d881513a AM |
14577 | outrel.r_info |
14578 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 14579 | } |
411e1bfb | 14580 | } |
951fd09b | 14581 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 14582 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 14583 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14584 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
14585 | else if (indx != 0) |
14586 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
14587 | else | |
81407a69 | 14588 | { |
25f23106 AM |
14589 | if (ifunc) |
14590 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14591 | else | |
14592 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
14593 | |
14594 | /* Write the .got section contents for the sake | |
14595 | of prelink. */ | |
e717da7e | 14596 | loc = got->contents + off; |
23fbd6fa JJ |
14597 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
14598 | loc); | |
81407a69 | 14599 | } |
81407a69 AM |
14600 | |
14601 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
14602 | { |
14603 | outrel.r_addend += relocation; | |
14604 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
14605 | { |
14606 | if (htab->elf.tls_sec == NULL) | |
14607 | outrel.r_addend = 0; | |
14608 | else | |
14609 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
14610 | } | |
e515b051 | 14611 | } |
e717da7e AM |
14612 | loc = relgot->contents; |
14613 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
14614 | * sizeof (Elf64_External_Rela)); |
14615 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
14616 | } | |
14617 | ||
ad8e1ba5 | 14618 | /* Init the .got section contents here if we're not |
81407a69 | 14619 | emitting a reloc. */ |
d881513a | 14620 | else |
411e1bfb | 14621 | { |
4cc603a5 | 14622 | relocation += addend; |
f0158f44 | 14623 | if (tls_type != 0) |
411e1bfb | 14624 | { |
989f9879 AM |
14625 | if (htab->elf.tls_sec == NULL) |
14626 | relocation = 0; | |
14627 | else | |
14628 | { | |
f0158f44 AM |
14629 | if (tls_type & TLS_LD) |
14630 | relocation = 0; | |
14631 | else | |
14632 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 14633 | if (tls_type & TLS_TPREL) |
989f9879 AM |
14634 | relocation += DTP_OFFSET - TP_OFFSET; |
14635 | } | |
5bd4f169 | 14636 | |
f0158f44 | 14637 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
14638 | { |
14639 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14640 | got->contents + off + 8); |
676ee2b5 | 14641 | relocation = 1; |
7b609f53 | 14642 | } |
411e1bfb AM |
14643 | } |
14644 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14645 | got->contents + off); |
5bd4f169 AM |
14646 | } |
14647 | } | |
14648 | ||
65f38f15 AM |
14649 | if (off >= (bfd_vma) -2) |
14650 | abort (); | |
14651 | ||
bf102f86 | 14652 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 14653 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 14654 | } |
65f38f15 AM |
14655 | break; |
14656 | ||
14657 | case R_PPC64_PLT16_HA: | |
14658 | case R_PPC64_PLT16_HI: | |
14659 | case R_PPC64_PLT16_LO: | |
08be3224 | 14660 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
14661 | case R_PPC64_PLT32: |
14662 | case R_PPC64_PLT64: | |
23cedd1d AM |
14663 | case R_PPC64_PLTSEQ: |
14664 | case R_PPC64_PLTCALL: | |
65f38f15 AM |
14665 | /* Relocation is to the entry for this symbol in the |
14666 | procedure linkage table. */ | |
23cedd1d | 14667 | unresolved_reloc = TRUE; |
cbf95972 AM |
14668 | { |
14669 | struct plt_entry **plt_list = NULL; | |
14670 | if (h != NULL) | |
14671 | plt_list = &h->elf.plt.plist; | |
14672 | else if (local_got_ents != NULL) | |
14673 | { | |
14674 | struct plt_entry **local_plt = (struct plt_entry **) | |
14675 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 14676 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
14677 | } |
14678 | if (plt_list) | |
14679 | { | |
14680 | struct plt_entry *ent; | |
65f38f15 | 14681 | |
cbf95972 AM |
14682 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
14683 | if (ent->plt.offset != (bfd_vma) -1 | |
14684 | && ent->addend == orig_rel.r_addend) | |
14685 | { | |
14686 | asection *plt; | |
08be3224 | 14687 | bfd_vma got; |
cbf95972 AM |
14688 | |
14689 | plt = htab->elf.splt; | |
14690 | if (!htab->elf.dynamic_sections_created | |
14691 | || h == NULL | |
14692 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
14693 | { |
14694 | if (h != NULL | |
14695 | ? h->elf.type == STT_GNU_IFUNC | |
14696 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14697 | plt = htab->elf.iplt; | |
14698 | else | |
14699 | plt = htab->pltlocal; | |
14700 | } | |
14701 | relocation = (plt->output_section->vma | |
14702 | + plt->output_offset | |
14703 | + ent->plt.offset); | |
08be3224 | 14704 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
14705 | || r_type == R_PPC64_PLT16_HI |
14706 | || r_type == R_PPC64_PLT16_LO | |
14707 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
14708 | { |
14709 | got = (elf_gp (output_bfd) | |
14710 | + htab->sec_info[input_section->id].toc_off); | |
14711 | relocation -= got; | |
14712 | } | |
cbf95972 AM |
14713 | addend = 0; |
14714 | unresolved_reloc = FALSE; | |
14715 | break; | |
14716 | } | |
14717 | } | |
14718 | } | |
65f38f15 | 14719 | break; |
5bd4f169 | 14720 | |
0b13192e AM |
14721 | case R_PPC64_TOC: |
14722 | /* Relocation value is TOC base. */ | |
14723 | relocation = TOCstart; | |
cf35638d | 14724 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 14725 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
14726 | else if (unresolved_reloc) |
14727 | ; | |
6f20ed8a AM |
14728 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
14729 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
14730 | else |
14731 | unresolved_reloc = TRUE; | |
ab96bf03 | 14732 | goto dodyn; |
0b13192e | 14733 | |
5bd4f169 AM |
14734 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14735 | which is the address of the start of the TOC plus 0x8000. | |
14736 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14737 | in this order. */ | |
65f38f15 AM |
14738 | case R_PPC64_TOC16: |
14739 | case R_PPC64_TOC16_LO: | |
14740 | case R_PPC64_TOC16_HI: | |
14741 | case R_PPC64_TOC16_DS: | |
14742 | case R_PPC64_TOC16_LO_DS: | |
14743 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 14744 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
14745 | break; |
14746 | ||
14747 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14748 | case R_PPC64_SECTOFF: |
14749 | case R_PPC64_SECTOFF_LO: | |
14750 | case R_PPC64_SECTOFF_HI: | |
14751 | case R_PPC64_SECTOFF_DS: | |
14752 | case R_PPC64_SECTOFF_LO_DS: | |
14753 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14754 | if (sec != NULL) |
65f38f15 | 14755 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14756 | break; |
14757 | ||
25f23106 AM |
14758 | case R_PPC64_REL16: |
14759 | case R_PPC64_REL16_LO: | |
14760 | case R_PPC64_REL16_HI: | |
14761 | case R_PPC64_REL16_HA: | |
4a969973 AM |
14762 | case R_PPC64_REL16_HIGH: |
14763 | case R_PPC64_REL16_HIGHA: | |
14764 | case R_PPC64_REL16_HIGHER: | |
14765 | case R_PPC64_REL16_HIGHERA: | |
14766 | case R_PPC64_REL16_HIGHEST: | |
14767 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 14768 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
14769 | break; |
14770 | ||
721956f4 AM |
14771 | case R_PPC64_REL14: |
14772 | case R_PPC64_REL14_BRNTAKEN: | |
14773 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 14774 | case R_PPC64_REL24: |
05d0e962 | 14775 | case R_PPC64_REL24_NOTOC: |
5d1634d7 AM |
14776 | break; |
14777 | ||
411e1bfb AM |
14778 | case R_PPC64_TPREL16: |
14779 | case R_PPC64_TPREL16_LO: | |
14780 | case R_PPC64_TPREL16_HI: | |
14781 | case R_PPC64_TPREL16_HA: | |
14782 | case R_PPC64_TPREL16_DS: | |
14783 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14784 | case R_PPC64_TPREL16_HIGH: |
14785 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14786 | case R_PPC64_TPREL16_HIGHER: |
14787 | case R_PPC64_TPREL16_HIGHERA: | |
14788 | case R_PPC64_TPREL16_HIGHEST: | |
14789 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14790 | if (h != NULL |
14791 | && h->elf.root.type == bfd_link_hash_undefweak | |
14792 | && h->elf.dynindx == -1) | |
14793 | { | |
14794 | /* Make this relocation against an undefined weak symbol | |
14795 | resolve to zero. This is really just a tweak, since | |
14796 | code using weak externs ought to check that they are | |
14797 | defined before using them. */ | |
14798 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14799 | ||
95f0d0d2 | 14800 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
14801 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
14802 | if (insn != 0) | |
95f0d0d2 | 14803 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
14804 | break; |
14805 | } | |
989f9879 AM |
14806 | if (htab->elf.tls_sec != NULL) |
14807 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
14808 | /* The TPREL16 relocs shouldn't really be used in shared |
14809 | libs or with non-local symbols as that will result in | |
14810 | DT_TEXTREL being set, but support them anyway. */ | |
14811 | goto dodyn; | |
411e1bfb AM |
14812 | |
14813 | case R_PPC64_DTPREL16: | |
14814 | case R_PPC64_DTPREL16_LO: | |
14815 | case R_PPC64_DTPREL16_HI: | |
14816 | case R_PPC64_DTPREL16_HA: | |
14817 | case R_PPC64_DTPREL16_DS: | |
14818 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14819 | case R_PPC64_DTPREL16_HIGH: |
14820 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14821 | case R_PPC64_DTPREL16_HIGHER: |
14822 | case R_PPC64_DTPREL16_HIGHERA: | |
14823 | case R_PPC64_DTPREL16_HIGHEST: | |
14824 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
14825 | if (htab->elf.tls_sec != NULL) |
14826 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14827 | break; |
14828 | ||
45965137 AM |
14829 | case R_PPC64_ADDR64_LOCAL: |
14830 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14831 | ? h->elf.other | |
14832 | : sym->st_other); | |
14833 | break; | |
14834 | ||
e515b051 AM |
14835 | case R_PPC64_DTPMOD64: |
14836 | relocation = 1; | |
14837 | addend = 0; | |
14838 | goto dodyn; | |
14839 | ||
411e1bfb | 14840 | case R_PPC64_TPREL64: |
989f9879 AM |
14841 | if (htab->elf.tls_sec != NULL) |
14842 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
14843 | goto dodyn; |
14844 | ||
14845 | case R_PPC64_DTPREL64: | |
989f9879 AM |
14846 | if (htab->elf.tls_sec != NULL) |
14847 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 14848 | /* Fall through. */ |
411e1bfb | 14849 | |
65f38f15 AM |
14850 | /* Relocations that may need to be propagated if this is a |
14851 | dynamic object. */ | |
04c9666a | 14852 | case R_PPC64_REL30: |
65f38f15 AM |
14853 | case R_PPC64_REL32: |
14854 | case R_PPC64_REL64: | |
14855 | case R_PPC64_ADDR14: | |
14856 | case R_PPC64_ADDR14_BRNTAKEN: | |
14857 | case R_PPC64_ADDR14_BRTAKEN: | |
14858 | case R_PPC64_ADDR16: | |
14859 | case R_PPC64_ADDR16_DS: | |
14860 | case R_PPC64_ADDR16_HA: | |
14861 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14862 | case R_PPC64_ADDR16_HIGH: |
14863 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14864 | case R_PPC64_ADDR16_HIGHER: |
14865 | case R_PPC64_ADDR16_HIGHERA: | |
14866 | case R_PPC64_ADDR16_HIGHEST: | |
14867 | case R_PPC64_ADDR16_HIGHESTA: | |
14868 | case R_PPC64_ADDR16_LO: | |
14869 | case R_PPC64_ADDR16_LO_DS: | |
14870 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14871 | case R_PPC64_ADDR32: |
14872 | case R_PPC64_ADDR64: | |
14873 | case R_PPC64_UADDR16: | |
14874 | case R_PPC64_UADDR32: | |
14875 | case R_PPC64_UADDR64: | |
411e1bfb | 14876 | dodyn: |
5d1634d7 | 14877 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14878 | break; |
14879 | ||
41bd81ab AM |
14880 | if (NO_OPD_RELOCS && is_opd) |
14881 | break; | |
14882 | ||
8a9e8e72 | 14883 | if (bfd_link_pic (info) |
b1b07054 AM |
14884 | ? ((h == NULL |
14885 | || h->dyn_relocs != NULL) | |
14886 | && ((h != NULL && pc_dynrelocs (h)) | |
14887 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
14888 | : (h != NULL |
14889 | ? h->dyn_relocs != NULL | |
d311bc8b | 14890 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 14891 | { |
b34976b6 | 14892 | bfd_boolean skip, relocate; |
65f38f15 | 14893 | asection *sreloc; |
1cf1f670 | 14894 | bfd_vma out_off; |
82e66161 | 14895 | long indx = 0; |
65f38f15 AM |
14896 | |
14897 | /* When generating a dynamic object, these relocations | |
14898 | are copied into the output file to be resolved at run | |
14899 | time. */ | |
14900 | ||
b34976b6 AM |
14901 | skip = FALSE; |
14902 | relocate = FALSE; | |
65f38f15 | 14903 | |
1cf1f670 AM |
14904 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14905 | input_section, rel->r_offset); | |
14906 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14907 | skip = TRUE; |
1cf1f670 | 14908 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14909 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14910 | out_off += (input_section->output_section->vma |
14911 | + input_section->output_offset); | |
14912 | outrel.r_offset = out_off; | |
411e1bfb | 14913 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14914 | |
1cf1f670 AM |
14915 | /* Optimize unaligned reloc use. */ |
14916 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14917 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14918 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14919 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14920 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14921 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14922 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14923 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14924 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14925 | ||
65f38f15 | 14926 | if (skip) |
0bb2d96a | 14927 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14928 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14929 | && !is_opd |
14930 | && r_type != R_PPC64_TOC) | |
14acf4dc | 14931 | { |
82e66161 AM |
14932 | indx = h->elf.dynindx; |
14933 | BFD_ASSERT (indx != -1); | |
14934 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 14935 | } |
65f38f15 AM |
14936 | else |
14937 | { | |
41bd81ab AM |
14938 | /* This symbol is local, or marked to become local, |
14939 | or this is an opd section reloc which must point | |
14940 | at a local function. */ | |
65f38f15 | 14941 | outrel.r_addend += relocation; |
e86ce104 | 14942 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14943 | { |
3fad3c7c | 14944 | if (is_opd && h != NULL) |
afbe61cf AM |
14945 | { |
14946 | /* Lie about opd entries. This case occurs | |
14947 | when building shared libraries and we | |
14948 | reference a function in another shared | |
3fad3c7c AM |
14949 | lib. The same thing happens for a weak |
14950 | definition in an application that's | |
14951 | overridden by a strong definition in a | |
14952 | shared lib. (I believe this is a generic | |
14953 | bug in binutils handling of weak syms.) | |
14954 | In these cases we won't use the opd | |
1e2f5b6e | 14955 | entry in this lib. */ |
b34976b6 | 14956 | unresolved_reloc = FALSE; |
afbe61cf | 14957 | } |
25f23106 AM |
14958 | if (!is_opd |
14959 | && r_type == R_PPC64_ADDR64 | |
14960 | && (h != NULL | |
14961 | ? h->elf.type == STT_GNU_IFUNC | |
14962 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14963 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14964 | else | |
14965 | { | |
14966 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14967 | |
25f23106 AM |
14968 | /* We need to relocate .opd contents for ld.so. |
14969 | Prelink also wants simple and consistent rules | |
14970 | for relocs. This make all RELATIVE relocs have | |
14971 | *r_offset equal to r_addend. */ | |
14972 | relocate = TRUE; | |
14973 | } | |
65f38f15 AM |
14974 | } |
14975 | else | |
14976 | { | |
25f23106 AM |
14977 | if (h != NULL |
14978 | ? h->elf.type == STT_GNU_IFUNC | |
14979 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14980 | { | |
25f53a85 | 14981 | info->callbacks->einfo |
695344c0 | 14982 | /* xgettext:c-format */ |
174d0a74 | 14983 | (_("%H: %s for indirect " |
c1c8c1ef | 14984 | "function `%pT' unsupported\n"), |
25f53a85 | 14985 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14986 | ppc64_elf_howto_table[r_type]->name, |
14987 | sym_name); | |
14988 | ret = FALSE; | |
14989 | } | |
cf35638d | 14990 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14991 | ; |
14992 | else if (sec == NULL || sec->owner == NULL) | |
14993 | { | |
14994 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14995 | return FALSE; |
65f38f15 AM |
14996 | } |
14997 | else | |
14998 | { | |
14999 | asection *osec; | |
15000 | ||
15001 | osec = sec->output_section; | |
15002 | indx = elf_section_data (osec)->dynindx; | |
15003 | ||
74541ad4 AM |
15004 | if (indx == 0) |
15005 | { | |
15006 | if ((osec->flags & SEC_READONLY) == 0 | |
15007 | && htab->elf.data_index_section != NULL) | |
15008 | osec = htab->elf.data_index_section; | |
15009 | else | |
15010 | osec = htab->elf.text_index_section; | |
15011 | indx = elf_section_data (osec)->dynindx; | |
15012 | } | |
15013 | BFD_ASSERT (indx != 0); | |
15014 | ||
65f38f15 AM |
15015 | /* We are turning this relocation into one |
15016 | against a section symbol, so subtract out | |
15017 | the output section's address but not the | |
15018 | offset of the input section in the output | |
15019 | section. */ | |
15020 | outrel.r_addend -= osec->vma; | |
15021 | } | |
15022 | ||
15023 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
15024 | } | |
15025 | } | |
15026 | ||
15027 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
15028 | if (h != NULL |
15029 | ? h->elf.type == STT_GNU_IFUNC | |
15030 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
15031 | { |
15032 | sreloc = htab->elf.irelplt; | |
15033 | if (indx == 0) | |
15034 | htab->local_ifunc_resolver = 1; | |
15035 | else if (is_static_defined (&h->elf)) | |
15036 | htab->maybe_local_ifunc_resolver = 1; | |
15037 | } | |
65f38f15 AM |
15038 | if (sreloc == NULL) |
15039 | abort (); | |
15040 | ||
dfbb6ac9 AM |
15041 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
15042 | >= sreloc->size) | |
15043 | abort (); | |
947216bf AM |
15044 | loc = sreloc->contents; |
15045 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
15046 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
15047 | ||
15048 | /* If this reloc is against an external symbol, it will | |
15049 | be computed at runtime, so there's no need to do | |
81407a69 AM |
15050 | anything now. However, for the sake of prelink ensure |
15051 | that the section contents are a known value. */ | |
2cdcc330 | 15052 | if (!relocate) |
81407a69 AM |
15053 | { |
15054 | unresolved_reloc = FALSE; | |
15055 | /* The value chosen here is quite arbitrary as ld.so | |
15056 | ignores section contents except for the special | |
15057 | case of .opd where the contents might be accessed | |
15058 | before relocation. Choose zero, as that won't | |
15059 | cause reloc overflow. */ | |
15060 | relocation = 0; | |
15061 | addend = 0; | |
15062 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
15063 | to improve backward compatibility with older | |
15064 | versions of ld. */ | |
15065 | if (r_type == R_PPC64_ADDR64) | |
15066 | addend = outrel.r_addend; | |
15067 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 15068 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 15069 | addend = outrel.r_offset; |
81407a69 | 15070 | } |
65f38f15 | 15071 | } |
5bd4f169 AM |
15072 | break; |
15073 | ||
65f38f15 AM |
15074 | case R_PPC64_COPY: |
15075 | case R_PPC64_GLOB_DAT: | |
15076 | case R_PPC64_JMP_SLOT: | |
25f23106 | 15077 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
15078 | case R_PPC64_RELATIVE: |
15079 | /* We shouldn't ever see these dynamic relocs in relocatable | |
15080 | files. */ | |
ae9a127f | 15081 | /* Fall through. */ |
65f38f15 AM |
15082 | |
15083 | case R_PPC64_PLTGOT16: | |
15084 | case R_PPC64_PLTGOT16_DS: | |
15085 | case R_PPC64_PLTGOT16_HA: | |
15086 | case R_PPC64_PLTGOT16_HI: | |
15087 | case R_PPC64_PLTGOT16_LO: | |
15088 | case R_PPC64_PLTGOT16_LO_DS: | |
15089 | case R_PPC64_PLTREL32: | |
15090 | case R_PPC64_PLTREL64: | |
15091 | /* These ones haven't been implemented yet. */ | |
15092 | ||
25f53a85 | 15093 | info->callbacks->einfo |
695344c0 | 15094 | /* xgettext:c-format */ |
c1c8c1ef | 15095 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 15096 | input_bfd, |
4ce794b7 | 15097 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
15098 | |
15099 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 15100 | ret = FALSE; |
c316a17c | 15101 | goto copy_reloc; |
65f38f15 | 15102 | } |
5bd4f169 | 15103 | |
67f0cbdb AM |
15104 | /* Multi-instruction sequences that access the TOC can be |
15105 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 15106 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
15107 | switch (r_type) |
15108 | { | |
15109 | default: | |
15110 | break; | |
15111 | ||
15112 | case R_PPC64_GOT_TLSLD16_HI: | |
15113 | case R_PPC64_GOT_TLSGD16_HI: | |
15114 | case R_PPC64_GOT_TPREL16_HI: | |
15115 | case R_PPC64_GOT_DTPREL16_HI: | |
15116 | case R_PPC64_GOT16_HI: | |
15117 | case R_PPC64_TOC16_HI: | |
15118 | /* These relocs would only be useful if building up an | |
15119 | offset to later add to r2, perhaps in an indexed | |
15120 | addressing mode instruction. Don't try to optimize. | |
15121 | Unfortunately, the possibility of someone building up an | |
15122 | offset like this or even with the HA relocs, means that | |
15123 | we need to check the high insn when optimizing the low | |
15124 | insn. */ | |
15125 | break; | |
15126 | ||
23cedd1d AM |
15127 | case R_PPC64_PLTCALL: |
15128 | if (unresolved_reloc) | |
15129 | { | |
15130 | /* No plt entry. Make this into a direct call. */ | |
15131 | bfd_byte *p = contents + rel->r_offset; | |
15132 | insn = bfd_get_32 (input_bfd, p); | |
15133 | insn &= 1; | |
15134 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
15135 | bfd_put_32 (input_bfd, NOP, p + 4); | |
15136 | unresolved_reloc = save_unresolved_reloc; | |
15137 | r_type = R_PPC64_REL24; | |
15138 | } | |
15139 | break; | |
15140 | ||
15141 | case R_PPC64_PLTSEQ: | |
15142 | if (unresolved_reloc) | |
15143 | { | |
15144 | unresolved_reloc = FALSE; | |
15145 | goto nop_it; | |
15146 | } | |
15147 | break; | |
15148 | ||
15149 | case R_PPC64_PLT16_HA: | |
15150 | if (unresolved_reloc) | |
15151 | { | |
15152 | unresolved_reloc = FALSE; | |
15153 | goto nop_it; | |
15154 | } | |
15155 | /* Fall through. */ | |
67f0cbdb AM |
15156 | case R_PPC64_GOT_TLSLD16_HA: |
15157 | case R_PPC64_GOT_TLSGD16_HA: | |
15158 | case R_PPC64_GOT_TPREL16_HA: | |
15159 | case R_PPC64_GOT_DTPREL16_HA: | |
15160 | case R_PPC64_GOT16_HA: | |
15161 | case R_PPC64_TOC16_HA: | |
98528052 | 15162 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15163 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 15164 | { |
23cedd1d AM |
15165 | bfd_byte *p; |
15166 | nop_it: | |
15167 | p = contents + (rel->r_offset & ~3); | |
98528052 | 15168 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 15169 | goto copy_reloc; |
98528052 | 15170 | } |
67f0cbdb AM |
15171 | break; |
15172 | ||
23cedd1d AM |
15173 | case R_PPC64_PLT16_LO: |
15174 | case R_PPC64_PLT16_LO_DS: | |
15175 | if (unresolved_reloc) | |
15176 | { | |
15177 | unresolved_reloc = FALSE; | |
15178 | goto nop_it; | |
15179 | } | |
15180 | /* Fall through. */ | |
67f0cbdb AM |
15181 | case R_PPC64_GOT_TLSLD16_LO: |
15182 | case R_PPC64_GOT_TLSGD16_LO: | |
15183 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15184 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15185 | case R_PPC64_GOT16_LO: | |
15186 | case R_PPC64_GOT16_LO_DS: | |
15187 | case R_PPC64_TOC16_LO: | |
15188 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 15189 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15190 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
15191 | { |
15192 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15193 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
15194 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
15195 | { | |
15196 | /* Transform addic to addi when we change reg. */ | |
15197 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
15198 | insn |= (14u << 26) | (2 << 16); | |
15199 | } | |
15200 | else | |
67f0cbdb | 15201 | { |
98528052 AM |
15202 | insn &= ~(0x1f << 16); |
15203 | insn |= 2 << 16; | |
67f0cbdb | 15204 | } |
560c8763 | 15205 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
15206 | } |
15207 | break; | |
9a23f96e AM |
15208 | |
15209 | case R_PPC64_TPREL16_HA: | |
15210 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15211 | { | |
15212 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15213 | insn = bfd_get_32 (input_bfd, p); | |
15214 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
15215 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
15216 | /* xgettext:c-format */ | |
15217 | info->callbacks->minfo | |
15218 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
15219 | input_bfd, input_section, rel->r_offset, |
15220 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 15221 | else |
d830549d AM |
15222 | { |
15223 | bfd_put_32 (input_bfd, NOP, p); | |
15224 | goto copy_reloc; | |
15225 | } | |
9a23f96e AM |
15226 | } |
15227 | break; | |
15228 | ||
15229 | case R_PPC64_TPREL16_LO: | |
15230 | case R_PPC64_TPREL16_LO_DS: | |
15231 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15232 | { | |
15233 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15234 | insn = bfd_get_32 (input_bfd, p); | |
15235 | insn &= ~(0x1f << 16); | |
15236 | insn |= 13 << 16; | |
15237 | bfd_put_32 (input_bfd, insn, p); | |
15238 | } | |
15239 | break; | |
67f0cbdb AM |
15240 | } |
15241 | ||
65f38f15 AM |
15242 | /* Do any further special processing. */ |
15243 | switch (r_type) | |
15244 | { | |
15245 | default: | |
15246 | break; | |
15247 | ||
25f23106 | 15248 | case R_PPC64_REL16_HA: |
4a969973 AM |
15249 | case R_PPC64_REL16_HIGHA: |
15250 | case R_PPC64_REL16_HIGHERA: | |
15251 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 15252 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
15253 | case R_PPC64_ADDR16_HA: |
15254 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15255 | case R_PPC64_ADDR16_HIGHERA: |
15256 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15257 | case R_PPC64_TOC16_HA: |
15258 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15259 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15260 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15261 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15262 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15263 | case R_PPC64_DTPREL16_HA: |
15264 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15265 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15266 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15267 | /* It's just possible that this symbol is a weak symbol |
15268 | that's not actually defined anywhere. In that case, | |
15269 | 'sec' would be NULL, and we should leave the symbol | |
15270 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15271 | if (sec == NULL) |
15272 | break; | |
1a0670f3 | 15273 | /* Fall through. */ |
5c5f6e17 AM |
15274 | |
15275 | case R_PPC64_GOT16_HA: | |
15276 | case R_PPC64_PLTGOT16_HA: | |
15277 | case R_PPC64_PLT16_HA: | |
15278 | case R_PPC64_GOT_TLSGD16_HA: | |
15279 | case R_PPC64_GOT_TLSLD16_HA: | |
15280 | case R_PPC64_GOT_TPREL16_HA: | |
15281 | case R_PPC64_GOT_DTPREL16_HA: | |
15282 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15283 | Bits 0:15 are not used. */ | |
15284 | addend += 0x8000; | |
65f38f15 AM |
15285 | break; |
15286 | ||
15287 | case R_PPC64_ADDR16_DS: | |
15288 | case R_PPC64_ADDR16_LO_DS: | |
15289 | case R_PPC64_GOT16_DS: | |
15290 | case R_PPC64_GOT16_LO_DS: | |
15291 | case R_PPC64_PLT16_LO_DS: | |
15292 | case R_PPC64_SECTOFF_DS: | |
15293 | case R_PPC64_SECTOFF_LO_DS: | |
15294 | case R_PPC64_TOC16_DS: | |
15295 | case R_PPC64_TOC16_LO_DS: | |
15296 | case R_PPC64_PLTGOT16_DS: | |
15297 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15298 | case R_PPC64_GOT_TPREL16_DS: |
15299 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15300 | case R_PPC64_GOT_DTPREL16_DS: | |
15301 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15302 | case R_PPC64_TPREL16_DS: | |
15303 | case R_PPC64_TPREL16_LO_DS: | |
15304 | case R_PPC64_DTPREL16_DS: | |
15305 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15306 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15307 | mask = 3; | |
a680de9a PB |
15308 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15309 | the value must be a multiple of 16. This is somewhat of | |
15310 | a hack, but the "correct" way to do this by defining _DQ | |
15311 | forms of all the _DS relocs bloats all reloc switches in | |
15312 | this file. It doesn't make much sense to use these | |
15313 | relocs in data, so testing the insn should be safe. */ | |
15314 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15315 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15316 | mask = 15; |
a680de9a PB |
15317 | relocation += addend; |
15318 | addend = insn & (mask ^ 3); | |
15319 | if ((relocation & mask) != 0) | |
65f38f15 | 15320 | { |
a680de9a | 15321 | relocation ^= relocation & mask; |
25f53a85 | 15322 | info->callbacks->einfo |
695344c0 | 15323 | /* xgettext:c-format */ |
174d0a74 | 15324 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 15325 | input_bfd, input_section, rel->r_offset, |
d830549d | 15326 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 15327 | mask + 1); |
65f38f15 | 15328 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15329 | ret = FALSE; |
c316a17c | 15330 | goto copy_reloc; |
65f38f15 AM |
15331 | } |
15332 | break; | |
5bd4f169 AM |
15333 | } |
15334 | ||
239e1f3a AM |
15335 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15336 | because such sections are not SEC_ALLOC and thus ld.so will | |
15337 | not process them. */ | |
d830549d | 15338 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 15339 | if (unresolved_reloc |
239e1f3a | 15340 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15341 | && h->elf.def_dynamic) |
15342 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15343 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15344 | { |
25f53a85 | 15345 | info->callbacks->einfo |
695344c0 | 15346 | /* xgettext:c-format */ |
c1c8c1ef | 15347 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 15348 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15349 | howto->name, |
039b3fef | 15350 | h->elf.root.root.string); |
b34976b6 | 15351 | ret = FALSE; |
9c07fe7c | 15352 | } |
5bd4f169 | 15353 | |
b80eed39 AM |
15354 | /* 16-bit fields in insns mostly have signed values, but a |
15355 | few insns have 16-bit unsigned values. Really, we should | |
15356 | have different reloc types. */ | |
15357 | if (howto->complain_on_overflow != complain_overflow_dont | |
15358 | && howto->dst_mask == 0xffff | |
15359 | && (input_section->flags & SEC_CODE) != 0) | |
15360 | { | |
15361 | enum complain_overflow complain = complain_overflow_signed; | |
15362 | ||
15363 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15364 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15365 | complain = complain_overflow_bitfield; | |
15366 | else if (howto->rightshift == 0 | |
15367 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15368 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15369 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15370 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15371 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15372 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15373 | complain = complain_overflow_unsigned; |
15374 | if (howto->complain_on_overflow != complain) | |
15375 | { | |
15376 | alt_howto = *howto; | |
15377 | alt_howto.complain_on_overflow = complain; | |
15378 | howto = &alt_howto; | |
15379 | } | |
15380 | } | |
15381 | ||
a680de9a PB |
15382 | if (r_type == R_PPC64_REL16DX_HA) |
15383 | { | |
15384 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15385 | if (rel->r_offset + 4 > input_section->size) | |
15386 | r = bfd_reloc_outofrange; | |
15387 | else | |
15388 | { | |
15389 | relocation += addend; | |
15390 | relocation -= (rel->r_offset | |
15391 | + input_section->output_offset | |
15392 | + input_section->output_section->vma); | |
3de43e7b | 15393 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
15394 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
15395 | insn &= ~0x1fffc1; | |
3de43e7b | 15396 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
15397 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15398 | r = bfd_reloc_ok; | |
3de43e7b | 15399 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
15400 | r = bfd_reloc_overflow; |
15401 | } | |
15402 | } | |
15403 | else | |
15404 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15405 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15406 | |
ef60b7ff | 15407 | if (r != bfd_reloc_ok) |
5bd4f169 | 15408 | { |
bc30df16 | 15409 | char *more_info = NULL; |
b80eed39 | 15410 | const char *reloc_name = howto->name; |
bc30df16 AM |
15411 | |
15412 | if (reloc_dest != DEST_NORMAL) | |
15413 | { | |
15414 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15415 | if (more_info != NULL) | |
15416 | { | |
15417 | strcpy (more_info, reloc_name); | |
15418 | strcat (more_info, (reloc_dest == DEST_OPD | |
15419 | ? " (OPD)" : " (stub)")); | |
15420 | reloc_name = more_info; | |
15421 | } | |
15422 | } | |
15423 | ||
cd27b276 | 15424 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15425 | { |
8131c122 AM |
15426 | /* On code like "if (foo) foo();" don't report overflow |
15427 | on a branch to zero when foo is undefined. */ | |
15428 | if (!warned | |
15429 | && (reloc_dest == DEST_STUB | |
15430 | || !(h != NULL | |
15431 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15432 | || h->elf.root.type == bfd_link_hash_undefined) | |
15433 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15434 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15435 | sym_name, reloc_name, | |
15436 | orig_rel.r_addend, | |
15437 | input_bfd, input_section, | |
15438 | rel->r_offset); | |
ef60b7ff AM |
15439 | } |
15440 | else | |
15441 | { | |
25f53a85 | 15442 | info->callbacks->einfo |
695344c0 | 15443 | /* xgettext:c-format */ |
c1c8c1ef | 15444 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 15445 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15446 | reloc_name, sym_name, (int) r); |
b34976b6 | 15447 | ret = FALSE; |
ef60b7ff | 15448 | } |
bc30df16 AM |
15449 | if (more_info != NULL) |
15450 | free (more_info); | |
5bd4f169 | 15451 | } |
c316a17c AM |
15452 | copy_reloc: |
15453 | if (wrel != rel) | |
15454 | *wrel = *rel; | |
15455 | } | |
15456 | ||
15457 | if (wrel != rel) | |
15458 | { | |
15459 | Elf_Internal_Shdr *rel_hdr; | |
15460 | size_t deleted = rel - wrel; | |
15461 | ||
15462 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15463 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15464 | if (rel_hdr->sh_size == 0) | |
15465 | { | |
15466 | /* It is too late to remove an empty reloc section. Leave | |
15467 | one NONE reloc. | |
15468 | ??? What is wrong with an empty section??? */ | |
15469 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15470 | deleted -= 1; | |
15471 | } | |
15472 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15473 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15474 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15475 | } |
15476 | ||
645ea6a9 AM |
15477 | /* If we're emitting relocations, then shortly after this function |
15478 | returns, reloc offsets and addends for this section will be | |
15479 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15480 | file rather than the input. Save a copy of the relocs for |
15481 | opd_entry_value. */ | |
0e1862bb | 15482 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15483 | { |
15484 | bfd_size_type amt; | |
15485 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15486 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
15487 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
15488 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
15489 | if (rel == NULL) |
15490 | return FALSE; | |
15491 | memcpy (rel, relocs, amt); | |
15492 | } | |
5bd4f169 AM |
15493 | return ret; |
15494 | } | |
15495 | ||
754021d0 AM |
15496 | /* Adjust the value of any local symbols in opd sections. */ |
15497 | ||
6e0b88f1 | 15498 | static int |
754021d0 AM |
15499 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
15500 | const char *name ATTRIBUTE_UNUSED, | |
15501 | Elf_Internal_Sym *elfsym, | |
15502 | asection *input_sec, | |
15503 | struct elf_link_hash_entry *h) | |
15504 | { | |
74f0fb50 AM |
15505 | struct _opd_sec_data *opd; |
15506 | long adjust; | |
754021d0 AM |
15507 | bfd_vma value; |
15508 | ||
4025353c | 15509 | if (h != NULL) |
6e0b88f1 | 15510 | return 1; |
4025353c | 15511 | |
74f0fb50 AM |
15512 | opd = get_opd_info (input_sec); |
15513 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 15514 | return 1; |
754021d0 AM |
15515 | |
15516 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 15517 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
15518 | value -= input_sec->output_section->vma; |
15519 | ||
51aecdc5 | 15520 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 15521 | if (adjust == -1) |
6e0b88f1 AM |
15522 | return 2; |
15523 | ||
15524 | elfsym->st_value += adjust; | |
15525 | return 1; | |
754021d0 AM |
15526 | } |
15527 | ||
5bd4f169 AM |
15528 | /* Finish up dynamic symbol handling. We set the contents of various |
15529 | dynamic sections here. */ | |
15530 | ||
b34976b6 | 15531 | static bfd_boolean |
4ce794b7 AM |
15532 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
15533 | struct bfd_link_info *info, | |
15534 | struct elf_link_hash_entry *h, | |
4aef7643 | 15535 | Elf_Internal_Sym *sym) |
5bd4f169 | 15536 | { |
65f38f15 | 15537 | struct ppc_link_hash_table *htab; |
8387904d | 15538 | struct plt_entry *ent; |
5bd4f169 | 15539 | |
65f38f15 | 15540 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15541 | if (htab == NULL) |
15542 | return FALSE; | |
5bd4f169 | 15543 | |
49c09209 AM |
15544 | if (!htab->opd_abi && !h->def_regular) |
15545 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
15546 | if (ent->plt.offset != (bfd_vma) -1) | |
15547 | { | |
15548 | /* Mark the symbol as undefined, rather than as | |
15549 | defined in glink. Leave the value if there were | |
15550 | any relocations where pointer equality matters | |
15551 | (this is a clue for the dynamic linker, to make | |
15552 | function pointer comparisons work between an | |
15553 | application and shared library), otherwise set it | |
15554 | to zero. */ | |
15555 | sym->st_shndx = SHN_UNDEF; | |
15556 | if (!h->pointer_equality_needed) | |
15557 | sym->st_value = 0; | |
15558 | else if (!h->ref_regular_nonweak) | |
15559 | { | |
15560 | /* This breaks function pointer comparisons, but | |
15561 | that is better than breaking tests for a NULL | |
15562 | function pointer. */ | |
15563 | sym->st_value = 0; | |
15564 | } | |
15565 | break; | |
15566 | } | |
5bd4f169 | 15567 | |
f5385ebf | 15568 | if (h->needs_copy) |
5bd4f169 | 15569 | { |
65f38f15 | 15570 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 15571 | Elf_Internal_Rela rela; |
5474d94f | 15572 | asection *srel; |
49c09209 | 15573 | bfd_byte *loc; |
5bd4f169 | 15574 | |
65f38f15 AM |
15575 | if (h->dynindx == -1 |
15576 | || (h->root.type != bfd_link_hash_defined | |
15577 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
15578 | || htab->elf.srelbss == NULL |
15579 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 15580 | abort (); |
5bd4f169 AM |
15581 | |
15582 | rela.r_offset = (h->root.u.def.value | |
15583 | + h->root.u.def.section->output_section->vma | |
15584 | + h->root.u.def.section->output_offset); | |
15585 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
15586 | rela.r_addend = 0; | |
afbf7e8e | 15587 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
15588 | srel = htab->elf.sreldynrelro; |
15589 | else | |
15590 | srel = htab->elf.srelbss; | |
15591 | loc = srel->contents; | |
15592 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 15593 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
15594 | } |
15595 | ||
b34976b6 | 15596 | return TRUE; |
5bd4f169 AM |
15597 | } |
15598 | ||
65f38f15 AM |
15599 | /* Used to decide how to sort relocs in an optimal manner for the |
15600 | dynamic linker, before writing them out. */ | |
15601 | ||
15602 | static enum elf_reloc_type_class | |
7e612e98 AM |
15603 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
15604 | const asection *rel_sec, | |
15605 | const Elf_Internal_Rela *rela) | |
65f38f15 | 15606 | { |
04c9666a | 15607 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
15608 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
15609 | ||
33e44f2e | 15610 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 15611 | return reloc_class_ifunc; |
a33d1f77 | 15612 | |
4ce794b7 | 15613 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 15614 | switch (r_type) |
65f38f15 AM |
15615 | { |
15616 | case R_PPC64_RELATIVE: | |
15617 | return reloc_class_relative; | |
15618 | case R_PPC64_JMP_SLOT: | |
15619 | return reloc_class_plt; | |
15620 | case R_PPC64_COPY: | |
15621 | return reloc_class_copy; | |
15622 | default: | |
15623 | return reloc_class_normal; | |
15624 | } | |
15625 | } | |
15626 | ||
5bd4f169 AM |
15627 | /* Finish up the dynamic sections. */ |
15628 | ||
b34976b6 | 15629 | static bfd_boolean |
4ce794b7 AM |
15630 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
15631 | struct bfd_link_info *info) | |
5bd4f169 | 15632 | { |
65f38f15 AM |
15633 | struct ppc_link_hash_table *htab; |
15634 | bfd *dynobj; | |
5bd4f169 | 15635 | asection *sdyn; |
5bd4f169 | 15636 | |
65f38f15 | 15637 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15638 | if (htab == NULL) |
15639 | return FALSE; | |
15640 | ||
65f38f15 | 15641 | dynobj = htab->elf.dynobj; |
3d4d4302 | 15642 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 15643 | |
65f38f15 | 15644 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 15645 | { |
5bd4f169 AM |
15646 | Elf64_External_Dyn *dyncon, *dynconend; |
15647 | ||
33e44f2e | 15648 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 15649 | abort (); |
5bd4f169 AM |
15650 | |
15651 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 15652 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
15653 | for (; dyncon < dynconend; dyncon++) |
15654 | { | |
15655 | Elf_Internal_Dyn dyn; | |
19397422 | 15656 | asection *s; |
5bd4f169 AM |
15657 | |
15658 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
15659 | ||
15660 | switch (dyn.d_tag) | |
15661 | { | |
65f38f15 AM |
15662 | default: |
15663 | continue; | |
5bd4f169 | 15664 | |
5d1634d7 | 15665 | case DT_PPC64_GLINK: |
4ce794b7 | 15666 | s = htab->glink; |
6348e046 | 15667 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
15668 | /* We stupidly defined DT_PPC64_GLINK to be the start |
15669 | of glink rather than the first entry point, which is | |
15670 | what ld.so needs, and now have a bigger stub to | |
15671 | support automatic multiple TOCs. */ | |
9e390558 | 15672 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
15673 | break; |
15674 | ||
19397422 AM |
15675 | case DT_PPC64_OPD: |
15676 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15677 | if (s == NULL) |
15678 | continue; | |
15679 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
15680 | break; |
15681 | ||
e8910a83 AM |
15682 | case DT_PPC64_OPT: |
15683 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
15684 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
f378ab09 AM |
15685 | if (htab->has_plt_localentry0) |
15686 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
15687 | break; |
15688 | ||
19397422 AM |
15689 | case DT_PPC64_OPDSZ: |
15690 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15691 | if (s == NULL) |
15692 | continue; | |
eea6121a | 15693 | dyn.d_un.d_val = s->size; |
19397422 AM |
15694 | break; |
15695 | ||
65f38f15 | 15696 | case DT_PLTGOT: |
33e44f2e | 15697 | s = htab->elf.splt; |
6348e046 | 15698 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
15699 | break; |
15700 | ||
15701 | case DT_JMPREL: | |
33e44f2e | 15702 | s = htab->elf.srelplt; |
6348e046 | 15703 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 15704 | break; |
5bd4f169 | 15705 | |
65f38f15 | 15706 | case DT_PLTRELSZ: |
33e44f2e | 15707 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 15708 | break; |
82e66161 AM |
15709 | |
15710 | case DT_TEXTREL: | |
15711 | if (htab->local_ifunc_resolver) | |
15712 | info->callbacks->einfo | |
15713 | (_("%X%P: text relocations and GNU indirect " | |
15714 | "functions will result in a segfault at runtime\n")); | |
15715 | else if (htab->maybe_local_ifunc_resolver) | |
15716 | info->callbacks->einfo | |
15717 | (_("%P: warning: text relocations and GNU indirect " | |
15718 | "functions may result in a segfault at runtime\n")); | |
15719 | continue; | |
5bd4f169 | 15720 | } |
5bd4f169 | 15721 | |
65f38f15 | 15722 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 15723 | } |
5bd4f169 AM |
15724 | } |
15725 | ||
6528b6eb AM |
15726 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
15727 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
15728 | { |
15729 | /* Fill in the first entry in the global offset table. | |
15730 | We use it to hold the link-time TOCbase. */ | |
15731 | bfd_put_64 (output_bfd, | |
60ee0d4a | 15732 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 15733 | htab->elf.sgot->contents); |
5d1634d7 AM |
15734 | |
15735 | /* Set .got entry size. */ | |
2cdcc330 AM |
15736 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
15737 | = 8; | |
5d1634d7 AM |
15738 | } |
15739 | ||
6528b6eb AM |
15740 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
15741 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
15742 | { |
15743 | /* Set .plt entry size. */ | |
33e44f2e | 15744 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 15745 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
15746 | } |
15747 | ||
84f5d08e AM |
15748 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
15749 | brlt ourselves if emitrelocations. */ | |
15750 | if (htab->brlt != NULL | |
15751 | && htab->brlt->reloc_count != 0 | |
15752 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15753 | htab->brlt, | |
d4730f92 | 15754 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
15755 | elf_section_data (htab->brlt)->relocs, |
15756 | NULL)) | |
15757 | return FALSE; | |
15758 | ||
176a0d42 AM |
15759 | if (htab->glink != NULL |
15760 | && htab->glink->reloc_count != 0 | |
15761 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15762 | htab->glink, | |
d4730f92 | 15763 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
15764 | elf_section_data (htab->glink)->relocs, |
15765 | NULL)) | |
15766 | return FALSE; | |
15767 | ||
da44f4e5 | 15768 | |
df136d64 AM |
15769 | if (htab->glink_eh_frame != NULL |
15770 | && htab->glink_eh_frame->size != 0 | |
15771 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
15772 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
15773 | htab->glink_eh_frame, | |
15774 | htab->glink_eh_frame->contents)) | |
15775 | return FALSE; | |
58d180e8 | 15776 | |
e717da7e | 15777 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15778 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15779 | bfd. */ | |
c72f2fb2 | 15780 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
15781 | { |
15782 | asection *s; | |
7b53ace3 | 15783 | |
0c8d6e5c | 15784 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15785 | continue; |
15786 | ||
e717da7e AM |
15787 | s = ppc64_elf_tdata (dynobj)->got; |
15788 | if (s != NULL | |
eea6121a | 15789 | && s->size != 0 |
e717da7e AM |
15790 | && s->output_section != bfd_abs_section_ptr |
15791 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15792 | s->contents, s->output_offset, | |
eea6121a | 15793 | s->size)) |
e717da7e AM |
15794 | return FALSE; |
15795 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15796 | if (s != NULL | |
eea6121a | 15797 | && s->size != 0 |
e717da7e AM |
15798 | && s->output_section != bfd_abs_section_ptr |
15799 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15800 | s->contents, s->output_offset, | |
eea6121a | 15801 | s->size)) |
e717da7e AM |
15802 | return FALSE; |
15803 | } | |
f6c52c13 | 15804 | |
b34976b6 | 15805 | return TRUE; |
5bd4f169 AM |
15806 | } |
15807 | ||
5bd4f169 | 15808 | #include "elf64-target.h" |
7b8e7dad AM |
15809 | |
15810 | /* FreeBSD support */ | |
15811 | ||
15812 | #undef TARGET_LITTLE_SYM | |
15813 | #undef TARGET_LITTLE_NAME | |
15814 | ||
15815 | #undef TARGET_BIG_SYM | |
6d00b590 | 15816 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
15817 | #undef TARGET_BIG_NAME |
15818 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15819 | ||
15820 | #undef ELF_OSABI | |
15821 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15822 | ||
15823 | #undef elf64_bed | |
15824 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15825 | ||
15826 | #include "elf64-target.h" |