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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
219d1afa | 2 | Copyright (C) 1999-2018 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 | |
a680de9a | 823 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
824 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
825 | ppc64_elf_ha_reloc), | |
a680de9a | 826 | |
7ba71655 | 827 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
828 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
829 | ppc64_elf_ha_reloc), | |
7ba71655 | 830 | |
f9c6b907 | 831 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
832 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
833 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
834 | |
835 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
836 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
837 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
838 | |
839 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
840 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
841 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
842 | |
843 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
844 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
845 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
846 | |
847 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
848 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
849 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
850 | |
851 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
852 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
853 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 854 | |
006589cf | 855 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
856 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
857 | bfd_elf_generic_reloc), | |
006589cf | 858 | |
45965137 | 859 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
860 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
861 | bfd_elf_generic_reloc), | |
45965137 | 862 | |
5bd4f169 | 863 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
864 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
865 | NULL), | |
5bd4f169 AM |
866 | |
867 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
868 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
869 | NULL), | |
5bd4f169 AM |
870 | }; |
871 | ||
872 | \f | |
873 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
874 | be done. */ | |
875 | ||
876 | static void | |
4ce794b7 | 877 | ppc_howto_init (void) |
5bd4f169 AM |
878 | { |
879 | unsigned int i, type; | |
880 | ||
a4b6fadd | 881 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
882 | { |
883 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 884 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
885 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
886 | } | |
887 | } | |
888 | ||
889 | static reloc_howto_type * | |
f3185997 | 890 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 891 | bfd_reloc_code_real_type code) |
5bd4f169 | 892 | { |
411e1bfb | 893 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
894 | |
895 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
896 | /* Initialize howto table if needed. */ | |
897 | ppc_howto_init (); | |
898 | ||
4ce794b7 | 899 | switch (code) |
5bd4f169 AM |
900 | { |
901 | default: | |
f3185997 | 902 | /* xgettext:c-format */ |
2cdcc330 AM |
903 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
904 | (int) code); | |
f3185997 | 905 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 906 | return NULL; |
5bd4f169 | 907 | |
411e1bfb AM |
908 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
909 | break; | |
910 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
911 | break; | |
912 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
913 | break; | |
914 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
915 | break; | |
916 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
917 | break; | |
918 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
919 | break; | |
f9c6b907 AM |
920 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
921 | break; | |
411e1bfb | 922 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 923 | break; |
f9c6b907 AM |
924 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
925 | break; | |
411e1bfb | 926 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 927 | break; |
411e1bfb | 928 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 929 | break; |
411e1bfb | 930 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 931 | break; |
411e1bfb | 932 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 933 | break; |
05d0e962 AM |
934 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
935 | break; | |
411e1bfb | 936 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 937 | break; |
411e1bfb | 938 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 939 | break; |
411e1bfb | 940 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 941 | break; |
411e1bfb | 942 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 943 | break; |
411e1bfb | 944 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 945 | break; |
411e1bfb | 946 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 947 | break; |
411e1bfb | 948 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 949 | break; |
411e1bfb | 950 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 951 | break; |
411e1bfb | 952 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 953 | break; |
411e1bfb | 954 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 955 | break; |
411e1bfb | 956 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 957 | break; |
411e1bfb | 958 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 959 | break; |
411e1bfb | 960 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 961 | break; |
411e1bfb | 962 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 963 | break; |
411e1bfb | 964 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 965 | break; |
411e1bfb | 966 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 967 | break; |
411e1bfb | 968 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 969 | break; |
411e1bfb | 970 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 971 | break; |
411e1bfb | 972 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 973 | break; |
411e1bfb | 974 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 975 | break; |
411e1bfb | 976 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 977 | break; |
411e1bfb | 978 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 979 | break; |
411e1bfb | 980 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 981 | break; |
411e1bfb | 982 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 983 | break; |
411e1bfb | 984 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 985 | break; |
411e1bfb | 986 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 987 | break; |
411e1bfb | 988 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 989 | break; |
411e1bfb | 990 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 991 | break; |
411e1bfb | 992 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 993 | break; |
411e1bfb | 994 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 995 | break; |
411e1bfb | 996 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 997 | break; |
411e1bfb | 998 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 999 | break; |
411e1bfb | 1000 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1001 | break; |
411e1bfb | 1002 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1003 | break; |
411e1bfb | 1004 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1005 | break; |
411e1bfb | 1006 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1007 | break; |
411e1bfb | 1008 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1009 | break; |
411e1bfb | 1010 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1011 | break; |
411e1bfb | 1012 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1013 | break; |
411e1bfb | 1014 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1015 | break; |
411e1bfb | 1016 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1017 | break; |
411e1bfb | 1018 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1019 | break; |
411e1bfb | 1020 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1021 | break; |
411e1bfb | 1022 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1023 | break; |
411e1bfb | 1024 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1025 | break; |
411e1bfb | 1026 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1027 | break; |
411e1bfb | 1028 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1029 | break; |
411e1bfb | 1030 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1031 | break; |
411e1bfb | 1032 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1033 | break; |
727fc41e AM |
1034 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1035 | break; | |
1036 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1037 | break; | |
411e1bfb | 1038 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1039 | break; |
411e1bfb | 1040 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1041 | break; |
411e1bfb | 1042 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1043 | break; |
411e1bfb | 1044 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1045 | break; |
f9c6b907 AM |
1046 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1047 | break; | |
411e1bfb | 1048 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1049 | break; |
f9c6b907 AM |
1050 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1051 | break; | |
411e1bfb | 1052 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1053 | break; |
411e1bfb AM |
1054 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1055 | break; | |
1056 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1057 | break; | |
1058 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1059 | break; | |
f9c6b907 AM |
1060 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1061 | break; | |
411e1bfb AM |
1062 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1063 | break; | |
f9c6b907 AM |
1064 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1065 | break; | |
411e1bfb AM |
1066 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1067 | break; | |
1068 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1069 | break; | |
1070 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1071 | break; | |
1072 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1073 | break; | |
1074 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1075 | break; | |
1076 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1077 | break; | |
1078 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1079 | break; | |
1080 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1081 | break; | |
1082 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1083 | break; | |
1084 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1085 | break; | |
1086 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1087 | break; | |
1088 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1089 | break; | |
1090 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1091 | break; | |
1092 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1093 | break; | |
1094 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1095 | break; | |
1096 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1097 | break; | |
1098 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1099 | break; | |
1100 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1101 | break; | |
1102 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1103 | break; | |
1104 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1105 | break; | |
1106 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1107 | break; | |
1108 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1109 | break; | |
1110 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1111 | break; | |
1112 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1113 | break; | |
1114 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1115 | break; | |
1116 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1117 | break; | |
1118 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1119 | break; | |
1120 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1121 | break; | |
1122 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1123 | break; | |
25f23106 AM |
1124 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1125 | break; | |
1126 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1127 | break; | |
1128 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1129 | break; | |
1130 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1131 | break; | |
7ba71655 AM |
1132 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1133 | break; | |
a680de9a PB |
1134 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1135 | break; | |
006589cf AM |
1136 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1137 | break; | |
45965137 AM |
1138 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1139 | break; | |
411e1bfb AM |
1140 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1141 | break; | |
1142 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1143 | break; |
1144 | } | |
1145 | ||
4ce794b7 | 1146 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1147 | }; |
1148 | ||
157090f7 AM |
1149 | static reloc_howto_type * |
1150 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1151 | const char *r_name) | |
1152 | { | |
1153 | unsigned int i; | |
1154 | ||
a4b6fadd | 1155 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1156 | if (ppc64_elf_howto_raw[i].name != NULL |
1157 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1158 | return &ppc64_elf_howto_raw[i]; | |
1159 | ||
1160 | return NULL; | |
1161 | } | |
1162 | ||
5bd4f169 AM |
1163 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1164 | ||
f3185997 | 1165 | static bfd_boolean |
4aef7643 | 1166 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1167 | Elf_Internal_Rela *dst) |
5bd4f169 | 1168 | { |
65f38f15 AM |
1169 | unsigned int type; |
1170 | ||
ef60b7ff | 1171 | /* Initialize howto table if needed. */ |
5bd4f169 | 1172 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1173 | ppc_howto_init (); |
1174 | ||
65f38f15 | 1175 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1176 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1177 | { |
695344c0 | 1178 | /* xgettext:c-format */ |
0aa13fee | 1179 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1180 | abfd, type); |
f3185997 NC |
1181 | bfd_set_error (bfd_error_bad_value); |
1182 | return FALSE; | |
d0fb9a8d | 1183 | } |
65f38f15 | 1184 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1185 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1186 | { | |
1187 | /* xgettext:c-format */ | |
1188 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1189 | abfd, type); | |
1190 | bfd_set_error (bfd_error_bad_value); | |
1191 | return FALSE; | |
1192 | } | |
2cdcc330 | 1193 | |
f3185997 | 1194 | return TRUE; |
5bd4f169 AM |
1195 | } |
1196 | ||
04c9666a | 1197 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1198 | |
1199 | static bfd_reloc_status_type | |
4ce794b7 AM |
1200 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1201 | void *data, asection *input_section, | |
1202 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1203 | { |
a680de9a PB |
1204 | enum elf_ppc64_reloc_type r_type; |
1205 | long insn; | |
1206 | bfd_size_type octets; | |
3de43e7b | 1207 | bfd_vma value; |
a680de9a | 1208 | |
805fc799 AM |
1209 | /* If this is a relocatable link (output_bfd test tells us), just |
1210 | call the generic function. Any adjustment will be done at final | |
1211 | link time. */ | |
1212 | if (output_bfd != NULL) | |
cedb70c5 | 1213 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1214 | input_section, output_bfd, error_message); |
1215 | ||
1216 | /* Adjust the addend for sign extension of the low 16 bits. | |
1217 | We won't actually be using the low 16 bits, so trashing them | |
1218 | doesn't matter. */ | |
1219 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
1220 | r_type = reloc_entry->howto->type; |
1221 | if (r_type != R_PPC64_REL16DX_HA) | |
1222 | return bfd_reloc_continue; | |
1223 | ||
1224 | value = 0; | |
1225 | if (!bfd_is_com_section (symbol->section)) | |
1226 | value = symbol->value; | |
1227 | value += (reloc_entry->addend | |
1228 | + symbol->section->output_offset | |
1229 | + symbol->section->output_section->vma); | |
1230 | value -= (reloc_entry->address | |
1231 | + input_section->output_offset | |
1232 | + input_section->output_section->vma); | |
3de43e7b | 1233 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
1234 | |
1235 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1236 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1237 | insn &= ~0x1fffc1; | |
3de43e7b | 1238 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1239 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1240 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1241 | return bfd_reloc_overflow; |
1242 | return bfd_reloc_ok; | |
805fc799 | 1243 | } |
5bd4f169 | 1244 | |
2441e016 AM |
1245 | static bfd_reloc_status_type |
1246 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1247 | void *data, asection *input_section, | |
1248 | bfd *output_bfd, char **error_message) | |
1249 | { | |
1250 | if (output_bfd != NULL) | |
1251 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1252 | input_section, output_bfd, error_message); | |
1253 | ||
699733f6 AM |
1254 | if (strcmp (symbol->section->name, ".opd") == 0 |
1255 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1256 | { |
1257 | bfd_vma dest = opd_entry_value (symbol->section, | |
1258 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1259 | NULL, NULL, FALSE); |
2441e016 AM |
1260 | if (dest != (bfd_vma) -1) |
1261 | reloc_entry->addend = dest - (symbol->value | |
1262 | + symbol->section->output_section->vma | |
1263 | + symbol->section->output_offset); | |
1264 | } | |
810d4e75 AM |
1265 | else |
1266 | { | |
1267 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1268 | ||
1269 | if (symbol->section->owner != abfd | |
9f284bf9 | 1270 | && symbol->section->owner != NULL |
810d4e75 AM |
1271 | && abiversion (symbol->section->owner) >= 2) |
1272 | { | |
1273 | unsigned int i; | |
1274 | ||
1275 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1276 | { | |
1277 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1278 | ||
1279 | if (strcmp (symdef->name, symbol->name) == 0) | |
1280 | { | |
1281 | elfsym = (elf_symbol_type *) symdef; | |
1282 | break; | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | reloc_entry->addend | |
1287 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1288 | } | |
2441e016 AM |
1289 | return bfd_reloc_continue; |
1290 | } | |
1291 | ||
805fc799 | 1292 | static bfd_reloc_status_type |
4ce794b7 AM |
1293 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1294 | void *data, asection *input_section, | |
1295 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1296 | { |
1297 | long insn; | |
04c9666a | 1298 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1299 | bfd_size_type octets; |
794e51c0 AM |
1300 | /* Assume 'at' branch hints. */ |
1301 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1302 | |
1303 | /* If this is a relocatable link (output_bfd test tells us), just | |
1304 | call the generic function. Any adjustment will be done at final | |
1305 | link time. */ | |
5bd4f169 | 1306 | if (output_bfd != NULL) |
cedb70c5 | 1307 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1308 | input_section, output_bfd, error_message); |
1309 | ||
1310 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1311 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1312 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1313 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1314 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1315 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1316 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1317 | |
794e51c0 | 1318 | if (is_isa_v2) |
5bd4f169 | 1319 | { |
805fc799 AM |
1320 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1321 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1322 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1323 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1324 | insn |= 0x02 << 21; | |
1325 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1326 | insn |= 0x08 << 21; | |
1327 | else | |
2441e016 | 1328 | goto out; |
5bd4f169 | 1329 | } |
805fc799 AM |
1330 | else |
1331 | { | |
1332 | bfd_vma target = 0; | |
1333 | bfd_vma from; | |
5bd4f169 | 1334 | |
805fc799 AM |
1335 | if (!bfd_is_com_section (symbol->section)) |
1336 | target = symbol->value; | |
1337 | target += symbol->section->output_section->vma; | |
1338 | target += symbol->section->output_offset; | |
1339 | target += reloc_entry->addend; | |
5bd4f169 | 1340 | |
805fc799 AM |
1341 | from = (reloc_entry->address |
1342 | + input_section->output_offset | |
1343 | + input_section->output_section->vma); | |
5bd4f169 | 1344 | |
805fc799 AM |
1345 | /* Invert 'y' bit if not the default. */ |
1346 | if ((bfd_signed_vma) (target - from) < 0) | |
1347 | insn ^= 0x01 << 21; | |
1348 | } | |
4ce794b7 | 1349 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1350 | out: |
1351 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1352 | input_section, output_bfd, error_message); | |
805fc799 | 1353 | } |
5bd4f169 | 1354 | |
805fc799 | 1355 | static bfd_reloc_status_type |
4ce794b7 AM |
1356 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1357 | void *data, asection *input_section, | |
1358 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1359 | { |
1360 | /* If this is a relocatable link (output_bfd test tells us), just | |
1361 | call the generic function. Any adjustment will be done at final | |
1362 | link time. */ | |
1363 | if (output_bfd != NULL) | |
cedb70c5 | 1364 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1365 | input_section, output_bfd, error_message); |
5bd4f169 | 1366 | |
805fc799 AM |
1367 | /* Subtract the symbol section base address. */ |
1368 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1369 | return bfd_reloc_continue; |
1370 | } | |
1371 | ||
805fc799 | 1372 | static bfd_reloc_status_type |
4ce794b7 AM |
1373 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1374 | void *data, asection *input_section, | |
1375 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1376 | { |
1377 | /* If this is a relocatable link (output_bfd test tells us), just | |
1378 | call the generic function. Any adjustment will be done at final | |
1379 | link time. */ | |
1380 | if (output_bfd != NULL) | |
cedb70c5 | 1381 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1382 | input_section, output_bfd, error_message); |
1383 | ||
1384 | /* Subtract the symbol section base address. */ | |
1385 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1386 | ||
1387 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1388 | reloc_entry->addend += 0x8000; | |
1389 | return bfd_reloc_continue; | |
1390 | } | |
1391 | ||
1392 | static bfd_reloc_status_type | |
4ce794b7 AM |
1393 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1394 | void *data, asection *input_section, | |
1395 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1396 | { |
1397 | bfd_vma TOCstart; | |
1398 | ||
1399 | /* If this is a relocatable link (output_bfd test tells us), just | |
1400 | call the generic function. Any adjustment will be done at final | |
1401 | link time. */ | |
1402 | if (output_bfd != NULL) | |
cedb70c5 | 1403 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1404 | input_section, output_bfd, error_message); |
1405 | ||
1406 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1407 | if (TOCstart == 0) | |
1c865ab2 | 1408 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1409 | |
1410 | /* Subtract the TOC base address. */ | |
1411 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1412 | return bfd_reloc_continue; | |
1413 | } | |
1414 | ||
1415 | static bfd_reloc_status_type | |
4ce794b7 AM |
1416 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1417 | void *data, asection *input_section, | |
1418 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1419 | { |
1420 | bfd_vma TOCstart; | |
1421 | ||
1422 | /* If this is a relocatable link (output_bfd test tells us), just | |
1423 | call the generic function. Any adjustment will be done at final | |
1424 | link time. */ | |
1425 | if (output_bfd != NULL) | |
cedb70c5 | 1426 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1427 | input_section, output_bfd, error_message); |
1428 | ||
1429 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1430 | if (TOCstart == 0) | |
1c865ab2 | 1431 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1432 | |
1433 | /* Subtract the TOC base address. */ | |
1434 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1435 | ||
1436 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1437 | reloc_entry->addend += 0x8000; | |
1438 | return bfd_reloc_continue; | |
1439 | } | |
1440 | ||
1441 | static bfd_reloc_status_type | |
4ce794b7 AM |
1442 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1443 | void *data, asection *input_section, | |
1444 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1445 | { |
1446 | bfd_vma TOCstart; | |
1447 | bfd_size_type octets; | |
1448 | ||
1449 | /* If this is a relocatable link (output_bfd test tells us), just | |
1450 | call the generic function. Any adjustment will be done at final | |
1451 | link time. */ | |
1452 | if (output_bfd != NULL) | |
cedb70c5 | 1453 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1454 | input_section, output_bfd, error_message); |
1455 | ||
1456 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1457 | if (TOCstart == 0) | |
1c865ab2 | 1458 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1459 | |
1460 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1461 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
1462 | return bfd_reloc_ok; | |
1463 | } | |
1464 | ||
1465 | static bfd_reloc_status_type | |
4ce794b7 AM |
1466 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1467 | void *data, asection *input_section, | |
1468 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1469 | { |
1470 | /* If this is a relocatable link (output_bfd test tells us), just | |
1471 | call the generic function. Any adjustment will be done at final | |
1472 | link time. */ | |
1473 | if (output_bfd != NULL) | |
cedb70c5 | 1474 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1475 | input_section, output_bfd, error_message); |
1476 | ||
1477 | if (error_message != NULL) | |
1478 | { | |
1479 | static char buf[60]; | |
1480 | sprintf (buf, "generic linker can't handle %s", | |
1481 | reloc_entry->howto->name); | |
1482 | *error_message = buf; | |
1483 | } | |
1484 | return bfd_reloc_dangerous; | |
1485 | } | |
1486 | ||
927be08e AM |
1487 | /* Track GOT entries needed for a given symbol. We might need more |
1488 | than one got entry per symbol. */ | |
1489 | struct got_entry | |
1490 | { | |
1491 | struct got_entry *next; | |
1492 | ||
1493 | /* The symbol addend that we'll be placing in the GOT. */ | |
1494 | bfd_vma addend; | |
1495 | ||
1496 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1497 | symbol referenced from different input files. This is to support | |
1498 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1499 | from one input file to another. After partitioning into TOC groups | |
1500 | we merge entries within the group. | |
1501 | ||
1502 | Point to the BFD owning this GOT entry. */ | |
1503 | bfd *owner; | |
1504 | ||
1505 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1506 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1507 | unsigned char tls_type; |
927be08e AM |
1508 | |
1509 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1510 | unsigned char is_indirect; |
927be08e AM |
1511 | |
1512 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1513 | union | |
2cdcc330 AM |
1514 | { |
1515 | bfd_signed_vma refcount; | |
1516 | bfd_vma offset; | |
1517 | struct got_entry *ent; | |
1518 | } got; | |
927be08e AM |
1519 | }; |
1520 | ||
1521 | /* The same for PLT. */ | |
1522 | struct plt_entry | |
1523 | { | |
1524 | struct plt_entry *next; | |
1525 | ||
1526 | bfd_vma addend; | |
1527 | ||
1528 | union | |
2cdcc330 AM |
1529 | { |
1530 | bfd_signed_vma refcount; | |
1531 | bfd_vma offset; | |
1532 | } plt; | |
927be08e AM |
1533 | }; |
1534 | ||
e717da7e AM |
1535 | struct ppc64_elf_obj_tdata |
1536 | { | |
1537 | struct elf_obj_tdata elf; | |
1538 | ||
1539 | /* Shortcuts to dynamic linker sections. */ | |
1540 | asection *got; | |
1541 | asection *relgot; | |
1542 | ||
b3fac117 AM |
1543 | /* Used during garbage collection. We attach global symbols defined |
1544 | on removed .opd entries to this section so that the sym is removed. */ | |
1545 | asection *deleted_section; | |
81688140 | 1546 | |
927be08e | 1547 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1548 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1549 | struct got_entry tlsld_got; |
8860955f | 1550 | |
2cdcc330 AM |
1551 | union |
1552 | { | |
729eabd5 AM |
1553 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1554 | Elf_Internal_Rela *relocs; | |
1555 | ||
1556 | /* Section contents. */ | |
1557 | bfd_byte *contents; | |
1558 | } opd; | |
d77c8a4b AM |
1559 | |
1560 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1561 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1562 | unsigned int has_small_toc_reloc : 1; |
1563 | ||
560c8763 AM |
1564 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1565 | instruction not one we handle. */ | |
1566 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
1567 | }; |
1568 | ||
1569 | #define ppc64_elf_tdata(bfd) \ | |
1570 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1571 | ||
1572 | #define ppc64_tlsld_got(bfd) \ | |
1573 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1574 | ||
0c8d6e5c AM |
1575 | #define is_ppc64_elf(bfd) \ |
1576 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1577 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1578 | |
e717da7e AM |
1579 | /* Override the generic function because we store some extras. */ |
1580 | ||
1581 | static bfd_boolean | |
1582 | ppc64_elf_mkobject (bfd *abfd) | |
1583 | { | |
0ffa91dd | 1584 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1585 | PPC64_ELF_DATA); |
e717da7e AM |
1586 | } |
1587 | ||
feee612b | 1588 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1589 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1590 | |
b34976b6 | 1591 | static bfd_boolean |
4ce794b7 | 1592 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1593 | { |
14b57c7c AM |
1594 | if (!abfd->arch_info->the_default) |
1595 | return TRUE; | |
1596 | ||
1597 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1598 | { |
1599 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1600 | ||
1601 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1602 | { | |
1603 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1604 | abfd->arch_info = abfd->arch_info->next; | |
1605 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1606 | } | |
1607 | } | |
14b57c7c | 1608 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1609 | } |
1610 | ||
d37c89e5 AM |
1611 | /* Support for core dump NOTE sections. */ |
1612 | ||
1613 | static bfd_boolean | |
1614 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1615 | { | |
eea6121a | 1616 | size_t offset, size; |
d37c89e5 AM |
1617 | |
1618 | if (note->descsz != 504) | |
1619 | return FALSE; | |
1620 | ||
1621 | /* pr_cursig */ | |
228e534f | 1622 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1623 | |
1624 | /* pr_pid */ | |
228e534f | 1625 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1626 | |
1627 | /* pr_reg */ | |
1628 | offset = 112; | |
eea6121a | 1629 | size = 384; |
d37c89e5 AM |
1630 | |
1631 | /* Make a ".reg/999" section. */ | |
1632 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1633 | size, note->descpos + offset); |
d37c89e5 AM |
1634 | } |
1635 | ||
1636 | static bfd_boolean | |
1637 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1638 | { | |
1639 | if (note->descsz != 136) | |
1640 | return FALSE; | |
1641 | ||
228e534f | 1642 | elf_tdata (abfd)->core->pid |
bc989cdc | 1643 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1644 | elf_tdata (abfd)->core->program |
d37c89e5 | 1645 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1646 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1647 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1648 | ||
1649 | return TRUE; | |
1650 | } | |
1651 | ||
183e98be AM |
1652 | static char * |
1653 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1654 | ...) | |
1655 | { | |
1656 | switch (note_type) | |
1657 | { | |
1658 | default: | |
1659 | return NULL; | |
1660 | ||
1661 | case NT_PRPSINFO: | |
1662 | { | |
9ef6d1e3 | 1663 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1664 | va_list ap; |
1665 | ||
1666 | va_start (ap, note_type); | |
75cd47ed | 1667 | memset (data, 0, sizeof (data)); |
183e98be | 1668 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1669 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1670 | DIAGNOSTIC_PUSH; |
be3e27bb | 1671 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1672 | -Wstringop-truncation: |
1673 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1674 | */ | |
95da9854 L |
1675 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1676 | #endif | |
183e98be | 1677 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1678 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1679 | DIAGNOSTIC_POP; |
fe75810f | 1680 | #endif |
183e98be AM |
1681 | va_end (ap); |
1682 | return elfcore_write_note (abfd, buf, bufsiz, | |
1683 | "CORE", note_type, data, sizeof (data)); | |
1684 | } | |
1685 | ||
1686 | case NT_PRSTATUS: | |
1687 | { | |
1688 | char data[504]; | |
1689 | va_list ap; | |
1690 | long pid; | |
1691 | int cursig; | |
1692 | const void *greg; | |
1693 | ||
1694 | va_start (ap, note_type); | |
1695 | memset (data, 0, 112); | |
1696 | pid = va_arg (ap, long); | |
1697 | bfd_put_32 (abfd, pid, data + 32); | |
1698 | cursig = va_arg (ap, int); | |
1699 | bfd_put_16 (abfd, cursig, data + 12); | |
1700 | greg = va_arg (ap, const void *); | |
1701 | memcpy (data + 112, greg, 384); | |
1702 | memset (data + 496, 0, 8); | |
1703 | va_end (ap); | |
1704 | return elfcore_write_note (abfd, buf, bufsiz, | |
1705 | "CORE", note_type, data, sizeof (data)); | |
1706 | } | |
1707 | } | |
1708 | } | |
1709 | ||
5d35169e AM |
1710 | /* Add extra PPC sections. */ |
1711 | ||
2cdcc330 | 1712 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1713 | { |
07d6d2b8 AM |
1714 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1715 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1716 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1717 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1718 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1719 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1720 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1721 | }; |
1722 | ||
7c8fe5c4 AM |
1723 | enum _ppc64_sec_type { |
1724 | sec_normal = 0, | |
1725 | sec_opd = 1, | |
1726 | sec_toc = 2 | |
1727 | }; | |
1728 | ||
f0abc2a1 AM |
1729 | struct _ppc64_elf_section_data |
1730 | { | |
1731 | struct bfd_elf_section_data elf; | |
411e1bfb | 1732 | |
f0abc2a1 AM |
1733 | union |
1734 | { | |
51aecdc5 AM |
1735 | /* An array with one entry for each opd function descriptor, |
1736 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1737 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1738 | struct _opd_sec_data |
1739 | { | |
1740 | /* Points to the function code section for local opd entries. */ | |
1741 | asection **func_sec; | |
1742 | ||
1743 | /* After editing .opd, adjust references to opd local syms. */ | |
1744 | long *adjust; | |
1745 | } opd; | |
7c8fe5c4 | 1746 | |
3a71aa26 AM |
1747 | /* An array for toc sections, indexed by offset/8. */ |
1748 | struct _toc_sec_data | |
1749 | { | |
1750 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1751 | unsigned *symndx; | |
1752 | ||
1753 | /* And the relocation addend. */ | |
1754 | bfd_vma *add; | |
1755 | } toc; | |
7c8fe5c4 AM |
1756 | } u; |
1757 | ||
1758 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 1759 | |
7c8fe5c4 AM |
1760 | /* Flag set when small branches are detected. Used to |
1761 | select suitable defaults for the stub group size. */ | |
1762 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
1763 | |
1764 | /* Flag set when PLTCALL relocs are detected. */ | |
1765 | unsigned int has_pltcall:1; | |
f0abc2a1 AM |
1766 | }; |
1767 | ||
1768 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 1769 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
1770 | |
1771 | static bfd_boolean | |
4ce794b7 | 1772 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1773 | { |
f592407e AM |
1774 | if (!sec->used_by_bfd) |
1775 | { | |
1776 | struct _ppc64_elf_section_data *sdata; | |
1777 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 1778 | |
f592407e AM |
1779 | sdata = bfd_zalloc (abfd, amt); |
1780 | if (sdata == NULL) | |
1781 | return FALSE; | |
1782 | sec->used_by_bfd = sdata; | |
1783 | } | |
f0abc2a1 AM |
1784 | |
1785 | return _bfd_elf_new_section_hook (abfd, sec); | |
1786 | } | |
4025353c | 1787 | |
74f0fb50 | 1788 | static struct _opd_sec_data * |
4025353c AM |
1789 | get_opd_info (asection * sec) |
1790 | { | |
1791 | if (sec != NULL | |
1792 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 1793 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 1794 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
1795 | return NULL; |
1796 | } | |
90e3cdf2 JJ |
1797 | \f |
1798 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 1799 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 1800 | static asection *synthetic_opd; |
90e3cdf2 | 1801 | |
699733f6 | 1802 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
1803 | |
1804 | static int | |
1805 | compare_symbols (const void *ap, const void *bp) | |
1806 | { | |
2cdcc330 AM |
1807 | const asymbol *a = *(const asymbol **) ap; |
1808 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 1809 | |
699733f6 AM |
1810 | /* Section symbols first. */ |
1811 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 1812 | return -1; |
699733f6 | 1813 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
1814 | return 1; |
1815 | ||
699733f6 | 1816 | /* then .opd symbols. */ |
cd285db5 AM |
1817 | if (synthetic_opd != NULL) |
1818 | { | |
1819 | if (strcmp (a->section->name, ".opd") == 0 | |
1820 | && strcmp (b->section->name, ".opd") != 0) | |
1821 | return -1; | |
1822 | if (strcmp (a->section->name, ".opd") != 0 | |
1823 | && strcmp (b->section->name, ".opd") == 0) | |
1824 | return 1; | |
1825 | } | |
90e3cdf2 | 1826 | |
699733f6 | 1827 | /* then other code symbols. */ |
2cdcc330 AM |
1828 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
1829 | == (SEC_CODE | SEC_ALLOC)) | |
1830 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
1831 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
1832 | return -1; |
1833 | ||
2cdcc330 AM |
1834 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
1835 | != (SEC_CODE | SEC_ALLOC)) | |
1836 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
1837 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
1838 | return 1; |
1839 | ||
1840 | if (synthetic_relocatable) | |
1841 | { | |
1842 | if (a->section->id < b->section->id) | |
1843 | return -1; | |
1844 | ||
1845 | if (a->section->id > b->section->id) | |
1846 | return 1; | |
1847 | } | |
1848 | ||
1849 | if (a->value + a->section->vma < b->value + b->section->vma) | |
1850 | return -1; | |
1851 | ||
1852 | if (a->value + a->section->vma > b->value + b->section->vma) | |
1853 | return 1; | |
1854 | ||
4d35a0aa AM |
1855 | /* For syms with the same value, prefer strong dynamic global function |
1856 | syms over other syms. */ | |
1857 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
1858 | return -1; | |
1859 | ||
1860 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
1861 | return 1; | |
1862 | ||
1863 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
1864 | return -1; | |
1865 | ||
1866 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
1867 | return 1; | |
1868 | ||
1869 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
1870 | return -1; | |
1871 | ||
1872 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
1873 | return 1; | |
1874 | ||
1875 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
1876 | return -1; | |
1877 | ||
1878 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
1879 | return 1; | |
1880 | ||
aaed6f5b | 1881 | return a > b; |
90e3cdf2 JJ |
1882 | } |
1883 | ||
699733f6 | 1884 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 1885 | |
699733f6 | 1886 | static asymbol * |
7292b3ac | 1887 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 1888 | { |
699733f6 | 1889 | long mid; |
90e3cdf2 | 1890 | |
7292b3ac | 1891 | if (id == (unsigned) -1) |
699733f6 AM |
1892 | { |
1893 | while (lo < hi) | |
1894 | { | |
1895 | mid = (lo + hi) >> 1; | |
1896 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
1897 | lo = mid + 1; | |
1898 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
1899 | hi = mid; | |
1900 | else | |
1901 | return syms[mid]; | |
1902 | } | |
1903 | } | |
1904 | else | |
1905 | { | |
1906 | while (lo < hi) | |
1907 | { | |
1908 | mid = (lo + hi) >> 1; | |
1909 | if (syms[mid]->section->id < id) | |
1910 | lo = mid + 1; | |
1911 | else if (syms[mid]->section->id > id) | |
1912 | hi = mid; | |
1913 | else if (syms[mid]->value < value) | |
1914 | lo = mid + 1; | |
1915 | else if (syms[mid]->value > value) | |
1916 | hi = mid; | |
1917 | else | |
1918 | return syms[mid]; | |
1919 | } | |
1920 | } | |
1921 | return NULL; | |
90e3cdf2 JJ |
1922 | } |
1923 | ||
468392fb AM |
1924 | static bfd_boolean |
1925 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
1926 | { | |
1927 | bfd_vma vma = *(bfd_vma *) ptr; | |
1928 | return ((section->flags & SEC_ALLOC) != 0 | |
1929 | && section->vma <= vma | |
1930 | && vma < section->vma + section->size); | |
1931 | } | |
1932 | ||
699733f6 | 1933 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
1934 | entry syms. Also generate @plt symbols for the glink branch table. |
1935 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
1936 | |
1937 | static long | |
a7535cf3 AM |
1938 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
1939 | long static_count, asymbol **static_syms, | |
1940 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 1941 | asymbol **ret) |
90e3cdf2 JJ |
1942 | { |
1943 | asymbol *s; | |
0ccf57bd | 1944 | size_t i, j, count; |
90e3cdf2 | 1945 | char *names; |
0ccf57bd | 1946 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 1947 | asection *opd = NULL; |
90e3cdf2 | 1948 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 1949 | asymbol **syms; |
ee67d69a | 1950 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
1951 | |
1952 | *ret = NULL; | |
1953 | ||
ee67d69a AM |
1954 | if (abi < 2) |
1955 | { | |
1956 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
1957 | if (opd == NULL && abi == 1) | |
1958 | return 0; | |
1959 | } | |
90e3cdf2 | 1960 | |
a5259595 AM |
1961 | syms = NULL; |
1962 | codesecsym = 0; | |
1963 | codesecsymend = 0; | |
1964 | secsymend = 0; | |
1965 | opdsymend = 0; | |
1966 | symcount = 0; | |
1967 | if (opd != NULL) | |
c9727e01 | 1968 | { |
a5259595 AM |
1969 | symcount = static_count; |
1970 | if (!relocatable) | |
1971 | symcount += dyn_count; | |
1972 | if (symcount == 0) | |
1973 | return 0; | |
c9727e01 | 1974 | |
a5259595 AM |
1975 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
1976 | if (syms == NULL) | |
1977 | return -1; | |
90e3cdf2 | 1978 | |
a5259595 AM |
1979 | if (!relocatable && static_count != 0 && dyn_count != 0) |
1980 | { | |
1981 | /* Use both symbol tables. */ | |
1982 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
1983 | memcpy (syms + static_count, dyn_syms, | |
1984 | (dyn_count + 1) * sizeof (*syms)); | |
1985 | } | |
1986 | else if (!relocatable && static_count == 0) | |
1987 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
1988 | else | |
1989 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 1990 | |
0ccf57bd AM |
1991 | /* Trim uninteresting symbols. Interesting symbols are section, |
1992 | function, and notype symbols. */ | |
1993 | for (i = 0, j = 0; i < symcount; ++i) | |
1994 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
1995 | | BSF_RELC | BSF_SRELC)) == 0) | |
1996 | syms[j++] = syms[i]; | |
1997 | symcount = j; | |
1998 | ||
a5259595 AM |
1999 | synthetic_relocatable = relocatable; |
2000 | synthetic_opd = opd; | |
2001 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2002 | |
a5259595 AM |
2003 | if (!relocatable && symcount > 1) |
2004 | { | |
bfa5bd2a PA |
2005 | /* Trim duplicate syms, since we may have merged the normal |
2006 | and dynamic symbols. Actually, we only care about syms | |
2007 | that have different values, so trim any with the same | |
2008 | value. Don't consider ifunc and ifunc resolver symbols | |
2009 | duplicates however, because GDB wants to know whether a | |
2010 | text symbol is an ifunc resolver. */ | |
a5259595 | 2011 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2012 | { |
2013 | const asymbol *s0 = syms[i - 1]; | |
2014 | const asymbol *s1 = syms[i]; | |
2015 | ||
2016 | if ((s0->value + s0->section->vma | |
2017 | != s1->value + s1->section->vma) | |
2018 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2019 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2020 | syms[j++] = syms[i]; | |
2021 | } | |
a5259595 AM |
2022 | symcount = j; |
2023 | } | |
699733f6 | 2024 | |
a5259595 AM |
2025 | i = 0; |
2026 | /* Note that here and in compare_symbols we can't compare opd and | |
2027 | sym->section directly. With separate debug info files, the | |
2028 | symbols will be extracted from the debug file while abfd passed | |
2029 | to this function is the real binary. */ | |
0ccf57bd | 2030 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
2031 | ++i; |
2032 | codesecsym = i; | |
2033 | ||
2034 | for (; i < symcount; ++i) | |
2035 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2036 | | SEC_THREAD_LOCAL)) | |
2037 | != (SEC_CODE | SEC_ALLOC)) | |
2038 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2039 | break; | |
2040 | codesecsymend = i; | |
2041 | ||
2042 | for (; i < symcount; ++i) | |
2043 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2044 | break; | |
2045 | secsymend = i; | |
2046 | ||
2047 | for (; i < symcount; ++i) | |
2048 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2049 | break; | |
2050 | opdsymend = i; | |
2051 | ||
2052 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2053 | if (((syms[i]->section->flags |
2054 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2055 | != (SEC_CODE | SEC_ALLOC)) |
2056 | break; | |
2057 | symcount = i; | |
2058 | } | |
c9727e01 | 2059 | count = 0; |
90e3cdf2 | 2060 | |
699733f6 | 2061 | if (relocatable) |
90e3cdf2 | 2062 | { |
699733f6 AM |
2063 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2064 | arelent *r; | |
2065 | size_t size; | |
0ccf57bd | 2066 | size_t relcount; |
90e3cdf2 | 2067 | |
468392fb AM |
2068 | if (opdsymend == secsymend) |
2069 | goto done; | |
2070 | ||
699733f6 | 2071 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2072 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2073 | if (relcount == 0) |
c9727e01 | 2074 | goto done; |
90e3cdf2 | 2075 | |
7356fed5 AM |
2076 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2077 | { | |
2078 | count = -1; | |
2079 | goto done; | |
2080 | } | |
2081 | ||
699733f6 | 2082 | size = 0; |
595da8c5 | 2083 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2084 | { |
2085 | asymbol *sym; | |
90e3cdf2 | 2086 | |
595da8c5 | 2087 | while (r < opd->relocation + relcount |
699733f6 AM |
2088 | && r->address < syms[i]->value + opd->vma) |
2089 | ++r; | |
90e3cdf2 | 2090 | |
595da8c5 | 2091 | if (r == opd->relocation + relcount) |
699733f6 | 2092 | break; |
90e3cdf2 | 2093 | |
699733f6 AM |
2094 | if (r->address != syms[i]->value + opd->vma) |
2095 | continue; | |
90e3cdf2 | 2096 | |
699733f6 AM |
2097 | if (r->howto->type != R_PPC64_ADDR64) |
2098 | continue; | |
90e3cdf2 | 2099 | |
699733f6 AM |
2100 | sym = *r->sym_ptr_ptr; |
2101 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2102 | sym->section->id, sym->value + r->addend)) | |
2103 | { | |
2104 | ++count; | |
2105 | size += sizeof (asymbol); | |
2106 | size += strlen (syms[i]->name) + 2; | |
2107 | } | |
2108 | } | |
90e3cdf2 | 2109 | |
c4b0b099 AM |
2110 | if (size == 0) |
2111 | goto done; | |
699733f6 AM |
2112 | s = *ret = bfd_malloc (size); |
2113 | if (s == NULL) | |
2114 | { | |
7356fed5 | 2115 | count = -1; |
c9727e01 | 2116 | goto done; |
699733f6 | 2117 | } |
90e3cdf2 | 2118 | |
699733f6 | 2119 | names = (char *) (s + count); |
90e3cdf2 | 2120 | |
595da8c5 | 2121 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2122 | { |
699733f6 | 2123 | asymbol *sym; |
90e3cdf2 | 2124 | |
595da8c5 | 2125 | while (r < opd->relocation + relcount |
699733f6 AM |
2126 | && r->address < syms[i]->value + opd->vma) |
2127 | ++r; | |
90e3cdf2 | 2128 | |
595da8c5 | 2129 | if (r == opd->relocation + relcount) |
699733f6 AM |
2130 | break; |
2131 | ||
2132 | if (r->address != syms[i]->value + opd->vma) | |
2133 | continue; | |
2134 | ||
2135 | if (r->howto->type != R_PPC64_ADDR64) | |
2136 | continue; | |
90e3cdf2 | 2137 | |
699733f6 AM |
2138 | sym = *r->sym_ptr_ptr; |
2139 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2140 | sym->section->id, sym->value + r->addend)) | |
2141 | { | |
2142 | size_t len; | |
2143 | ||
2144 | *s = *syms[i]; | |
6ba2a415 | 2145 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2146 | s->section = sym->section; |
2147 | s->value = sym->value + r->addend; | |
2148 | s->name = names; | |
2149 | *names++ = '.'; | |
2150 | len = strlen (syms[i]->name); | |
2151 | memcpy (names, syms[i]->name, len + 1); | |
2152 | names += len + 1; | |
6f610d07 UW |
2153 | /* Have udata.p point back to the original symbol this |
2154 | synthetic symbol was derived from. */ | |
2155 | s->udata.p = syms[i]; | |
699733f6 AM |
2156 | s++; |
2157 | } | |
2158 | } | |
2159 | } | |
2160 | else | |
90e3cdf2 | 2161 | { |
468392fb | 2162 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2163 | bfd_byte *contents = NULL; |
699733f6 | 2164 | size_t size; |
0ccf57bd | 2165 | size_t plt_count = 0; |
468392fb AM |
2166 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2167 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2168 | arelent *p; | |
90e3cdf2 | 2169 | |
ee67d69a | 2170 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2171 | { |
c4b0b099 AM |
2172 | free_contents_and_exit_err: |
2173 | count = -1; | |
ee67d69a | 2174 | free_contents_and_exit: |
699733f6 | 2175 | if (contents) |
ee67d69a | 2176 | free (contents); |
c9727e01 | 2177 | goto done; |
699733f6 | 2178 | } |
90e3cdf2 | 2179 | |
699733f6 AM |
2180 | size = 0; |
2181 | for (i = secsymend; i < opdsymend; ++i) | |
2182 | { | |
2183 | bfd_vma ent; | |
90e3cdf2 | 2184 | |
5ef11c02 AM |
2185 | /* Ignore bogus symbols. */ |
2186 | if (syms[i]->value > opd->size - 8) | |
2187 | continue; | |
2188 | ||
699733f6 AM |
2189 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2190 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2191 | { | |
2192 | ++count; | |
2193 | size += sizeof (asymbol); | |
2194 | size += strlen (syms[i]->name) + 2; | |
2195 | } | |
2196 | } | |
90e3cdf2 | 2197 | |
468392fb | 2198 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2199 | if (dyn_count != 0 |
2200 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2201 | { |
2202 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2203 | size_t extdynsize; | |
2204 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2205 | ||
2206 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2207 | goto free_contents_and_exit_err; |
468392fb AM |
2208 | |
2209 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2210 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2211 | ||
2212 | extdyn = dynbuf; | |
2213 | extdynend = extdyn + dynamic->size; | |
2214 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2215 | { | |
2216 | Elf_Internal_Dyn dyn; | |
2217 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2218 | ||
2219 | if (dyn.d_tag == DT_NULL) | |
2220 | break; | |
2221 | ||
2222 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2223 | { | |
9e390558 AM |
2224 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2225 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2226 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2227 | /* The .glink section usually does not survive the final |
2228 | link; search for the section (usually .text) where the | |
2229 | glink stubs now reside. */ | |
2230 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2231 | &glink_vma); | |
2232 | break; | |
2233 | } | |
2234 | } | |
2235 | ||
2236 | free (dynbuf); | |
2237 | } | |
2238 | ||
2239 | if (glink != NULL) | |
2240 | { | |
2241 | /* Determine __glink trampoline by reading the relative branch | |
2242 | from the first glink stub. */ | |
2243 | bfd_byte buf[4]; | |
b9e5796b AM |
2244 | unsigned int off = 0; |
2245 | ||
2246 | while (bfd_get_section_contents (abfd, glink, buf, | |
2247 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2248 | { |
2249 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2250 | insn ^= B_DOT; | |
2251 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2252 | { |
2cdcc330 AM |
2253 | resolv_vma |
2254 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2255 | break; |
2256 | } | |
2257 | off += 4; | |
2258 | if (off > 4) | |
2259 | break; | |
468392fb AM |
2260 | } |
2261 | ||
2262 | if (resolv_vma) | |
2263 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2264 | |
066ee829 AM |
2265 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2266 | if (relplt != NULL) | |
2267 | { | |
2268 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2269 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2270 | goto free_contents_and_exit_err; |
68ffbac6 | 2271 | |
066ee829 AM |
2272 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2273 | size += plt_count * sizeof (asymbol); | |
468392fb | 2274 | |
066ee829 AM |
2275 | p = relplt->relocation; |
2276 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2277 | { |
2278 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2279 | if (p->addend != 0) | |
2280 | size += sizeof ("+0x") - 1 + 16; | |
2281 | } | |
066ee829 | 2282 | } |
468392fb AM |
2283 | } |
2284 | ||
c4b0b099 AM |
2285 | if (size == 0) |
2286 | goto free_contents_and_exit; | |
699733f6 AM |
2287 | s = *ret = bfd_malloc (size); |
2288 | if (s == NULL) | |
c4b0b099 | 2289 | goto free_contents_and_exit_err; |
90e3cdf2 | 2290 | |
468392fb | 2291 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2292 | |
699733f6 | 2293 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2294 | { |
699733f6 | 2295 | bfd_vma ent; |
90e3cdf2 | 2296 | |
5ef11c02 AM |
2297 | if (syms[i]->value > opd->size - 8) |
2298 | continue; | |
2299 | ||
699733f6 AM |
2300 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2301 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2302 | { |
0ccf57bd | 2303 | size_t lo, hi; |
699733f6 | 2304 | size_t len; |
c9727e01 | 2305 | asection *sec = abfd->sections; |
90e3cdf2 | 2306 | |
699733f6 AM |
2307 | *s = *syms[i]; |
2308 | lo = codesecsym; | |
2309 | hi = codesecsymend; | |
2310 | while (lo < hi) | |
2311 | { | |
0ccf57bd | 2312 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2313 | if (syms[mid]->section->vma < ent) |
2314 | lo = mid + 1; | |
2315 | else if (syms[mid]->section->vma > ent) | |
2316 | hi = mid; | |
2317 | else | |
c9727e01 AM |
2318 | { |
2319 | sec = syms[mid]->section; | |
2320 | break; | |
2321 | } | |
699733f6 AM |
2322 | } |
2323 | ||
c9727e01 | 2324 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2325 | sec = syms[lo - 1]->section; |
699733f6 AM |
2326 | |
2327 | for (; sec != NULL; sec = sec->next) | |
2328 | { | |
2329 | if (sec->vma > ent) | |
2330 | break; | |
63524580 JK |
2331 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2332 | info file. */ | |
2333 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2334 | break; |
2335 | if ((sec->flags & SEC_CODE) != 0) | |
2336 | s->section = sec; | |
2337 | } | |
6ba2a415 | 2338 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2339 | s->value = ent - s->section->vma; |
2340 | s->name = names; | |
2341 | *names++ = '.'; | |
2342 | len = strlen (syms[i]->name); | |
2343 | memcpy (names, syms[i]->name, len + 1); | |
2344 | names += len + 1; | |
6f610d07 UW |
2345 | /* Have udata.p point back to the original symbol this |
2346 | synthetic symbol was derived from. */ | |
2347 | s->udata.p = syms[i]; | |
699733f6 | 2348 | s++; |
90e3cdf2 | 2349 | } |
90e3cdf2 | 2350 | } |
699733f6 | 2351 | free (contents); |
468392fb AM |
2352 | |
2353 | if (glink != NULL && relplt != NULL) | |
2354 | { | |
2355 | if (resolv_vma) | |
2356 | { | |
2357 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2358 | memset (s, 0, sizeof *s); |
468392fb | 2359 | s->the_bfd = abfd; |
6ba2a415 | 2360 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2361 | s->section = glink; |
2362 | s->value = resolv_vma - glink->vma; | |
2363 | s->name = names; | |
2cdcc330 AM |
2364 | memcpy (names, "__glink_PLTresolve", |
2365 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2366 | names += sizeof ("__glink_PLTresolve"); |
2367 | s++; | |
2368 | count++; | |
2369 | } | |
2370 | ||
2371 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2372 | stub rather than on the glink branch table entry. The | |
2373 | objdump disassembler would then use a sensible symbol | |
2374 | name on plt calls. The difficulty in doing so is | |
2375 | a) finding the stubs, and, | |
2376 | b) matching stubs against plt entries, and, | |
2377 | c) there can be multiple stubs for a given plt entry. | |
2378 | ||
2379 | Solving (a) could be done by code scanning, but older | |
2380 | ppc64 binaries used different stubs to current code. | |
2381 | (b) is the tricky one since you need to known the toc | |
2382 | pointer for at least one function that uses a pic stub to | |
2383 | be able to calculate the plt address referenced. | |
2384 | (c) means gdb would need to set multiple breakpoints (or | |
2385 | find the glink branch itself) when setting breakpoints | |
2386 | for pending shared library loads. */ | |
2387 | p = relplt->relocation; | |
2388 | for (i = 0; i < plt_count; i++, p++) | |
2389 | { | |
2390 | size_t len; | |
2391 | ||
2392 | *s = **p->sym_ptr_ptr; | |
2393 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2394 | we are defining a symbol, ensure one of them is set. */ | |
2395 | if ((s->flags & BSF_LOCAL) == 0) | |
2396 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2397 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2398 | s->section = glink; |
2399 | s->value = glink_vma - glink->vma; | |
2400 | s->name = names; | |
2401 | s->udata.p = NULL; | |
2402 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2403 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2404 | names += len; | |
e054468f AM |
2405 | if (p->addend != 0) |
2406 | { | |
2407 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2408 | names += sizeof ("+0x") - 1; | |
2409 | bfd_sprintf_vma (abfd, names, p->addend); | |
2410 | names += strlen (names); | |
2411 | } | |
468392fb AM |
2412 | memcpy (names, "@plt", sizeof ("@plt")); |
2413 | names += sizeof ("@plt"); | |
2414 | s++; | |
b9e5796b AM |
2415 | if (abi < 2) |
2416 | { | |
2417 | glink_vma += 8; | |
2418 | if (i >= 0x8000) | |
2419 | glink_vma += 4; | |
2420 | } | |
2421 | else | |
468392fb AM |
2422 | glink_vma += 4; |
2423 | } | |
2424 | count += plt_count; | |
2425 | } | |
90e3cdf2 JJ |
2426 | } |
2427 | ||
c9727e01 | 2428 | done: |
a7535cf3 | 2429 | free (syms); |
90e3cdf2 JJ |
2430 | return count; |
2431 | } | |
5bd4f169 | 2432 | \f |
65f38f15 AM |
2433 | /* The following functions are specific to the ELF linker, while |
2434 | functions above are used generally. Those named ppc64_elf_* are | |
2435 | called by the main ELF linker code. They appear in this file more | |
2436 | or less in the order in which they are called. eg. | |
2437 | ppc64_elf_check_relocs is called early in the link process, | |
2438 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2439 | called. |
2440 | ||
2441 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2442 | functions have both a function code symbol and a function descriptor | |
2443 | symbol. A call to foo in a relocatable object file looks like: | |
2444 | ||
2445 | . .text | |
2446 | . x: | |
2447 | . bl .foo | |
2448 | . nop | |
2449 | ||
2450 | The function definition in another object file might be: | |
2451 | ||
2452 | . .section .opd | |
2453 | . foo: .quad .foo | |
2454 | . .quad .TOC.@tocbase | |
2455 | . .quad 0 | |
2456 | . | |
2457 | . .text | |
2458 | . .foo: blr | |
2459 | ||
2460 | When the linker resolves the call during a static link, the branch | |
2461 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2462 | If the function definition is in a shared library, things are a little | |
2463 | different: The call goes via a plt call stub, the opd information gets | |
2464 | copied to the plt, and the linker patches the nop. | |
2465 | ||
2466 | . x: | |
2467 | . bl .foo_stub | |
2468 | . ld 2,40(1) | |
2469 | . | |
2470 | . | |
2471 | . .foo_stub: | |
71a39c98 AM |
2472 | . std 2,40(1) # in practice, the call stub |
2473 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2474 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2475 | . ld 12,0(11) | |
2476 | . ld 2,8(11) | |
2477 | . mtctr 12 | |
2478 | . ld 11,16(11) | |
e86ce104 AM |
2479 | . bctr |
2480 | . | |
2481 | . .section .plt | |
2482 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2483 | ||
2484 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2485 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2486 | copying. | |
2487 | ||
2488 | What are the difficulties here? Well, firstly, the relocations | |
2489 | examined by the linker in check_relocs are against the function code | |
2490 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2491 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2492 | to carefully copy dynamic link information from one symbol to the other. | |
2493 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2494 | symbol as is normal for most other backends. We need foo dynamic | |
2495 | instead, at least for an application final link. However, when | |
2496 | creating a shared library containing foo, we need to have both symbols | |
2497 | dynamic so that references to .foo are satisfied during the early | |
2498 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2499 | definition from some other object, eg. a static library. |
2500 | ||
2501 | Update: As of August 2004, we support a new convention. Function | |
2502 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2503 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2504 | |
7c8bbca5 AM |
2505 | /* Of those relocs that might be copied as dynamic relocs, this |
2506 | function selects those that must be copied when linking a shared | |
2507 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2508 | |
1d483afe AM |
2509 | static int |
2510 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2511 | enum elf_ppc64_reloc_type r_type) | |
2512 | { | |
2513 | switch (r_type) | |
2514 | { | |
2515 | default: | |
7c8bbca5 AM |
2516 | /* Only relative relocs can be resolved when the object load |
2517 | address isn't fixed. DTPREL64 is excluded because the | |
2518 | dynamic linker needs to differentiate global dynamic from | |
2519 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2520 | return 1; |
2521 | ||
2522 | case R_PPC64_REL32: | |
2523 | case R_PPC64_REL64: | |
2524 | case R_PPC64_REL30: | |
2525 | return 0; | |
2526 | ||
2527 | case R_PPC64_TPREL16: | |
2528 | case R_PPC64_TPREL16_LO: | |
2529 | case R_PPC64_TPREL16_HI: | |
2530 | case R_PPC64_TPREL16_HA: | |
2531 | case R_PPC64_TPREL16_DS: | |
2532 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2533 | case R_PPC64_TPREL16_HIGH: |
2534 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2535 | case R_PPC64_TPREL16_HIGHER: |
2536 | case R_PPC64_TPREL16_HIGHERA: | |
2537 | case R_PPC64_TPREL16_HIGHEST: | |
2538 | case R_PPC64_TPREL16_HIGHESTA: | |
2539 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
2540 | /* These relocations are relative but in a shared library the |
2541 | linker doesn't know the thread pointer base. */ | |
2542 | return bfd_link_dll (info); | |
1d483afe AM |
2543 | } |
2544 | } | |
65f38f15 | 2545 | |
f4656909 AM |
2546 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2547 | copying dynamic variables from a shared lib into an app's dynbss | |
2548 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
2549 | shared lib. With code that gcc generates, it's vital that this be |
2550 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
2551 | the address of a function descriptor, which resides in the .opd | |
2552 | section. gcc uses the descriptor directly rather than going via the | |
2553 | GOT as some other ABI's do, which means that initialized function | |
2554 | pointers must reference the descriptor. Thus, a function pointer | |
2555 | initialized to the address of a function in a shared library will | |
2556 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 2557 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
2558 | presents a problem as a plt entry for that function is also |
2559 | initialized from the function descriptor symbol and the copy reloc | |
2560 | may not be initialized first. */ | |
a23b6845 | 2561 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2562 | |
721956f4 | 2563 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2564 | string. */ |
2565 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2566 | |
2567 | /* Linker stubs. | |
2568 | ppc_stub_long_branch: | |
2569 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2570 | destination, but a 24 bit branch in a stub section will reach. | |
2571 | . b dest | |
2572 | ||
2573 | ppc_stub_plt_branch: | |
2574 | Similar to the above, but a 24 bit branch in the stub section won't | |
2575 | reach its destination. | |
71a39c98 AM |
2576 | . addis %r11,%r2,xxx@toc@ha |
2577 | . ld %r12,xxx@toc@l(%r11) | |
2578 | . mtctr %r12 | |
721956f4 AM |
2579 | . bctr |
2580 | ||
2581 | ppc_stub_plt_call: | |
2c66dc6c AM |
2582 | Used to call a function in a shared library. If it so happens that |
2583 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2584 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2585 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2586 | . addis %r11,%r2,xxx@toc@ha |
2587 | . ld %r12,xxx+0@toc@l(%r11) | |
2588 | . mtctr %r12 | |
2589 | . ld %r2,xxx+8@toc@l(%r11) | |
2590 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2591 | . bctr |
ad8e1ba5 AM |
2592 | |
2593 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2594 | code to adjust the value and save r2 to support multiple toc sections. | |
2595 | A ppc_stub_long_branch with an r2 offset looks like: | |
2596 | . std %r2,40(%r1) | |
2597 | . addis %r2,%r2,off@ha | |
2598 | . addi %r2,%r2,off@l | |
2599 | . b dest | |
2600 | ||
2601 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2602 | . std %r2,40(%r1) | |
71a39c98 AM |
2603 | . addis %r11,%r2,xxx@toc@ha |
2604 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
2605 | . addis %r2,%r2,off@ha |
2606 | . addi %r2,%r2,off@l | |
71a39c98 | 2607 | . mtctr %r12 |
ad8e1ba5 | 2608 | . bctr |
ac2df442 | 2609 | |
05d0e962 AM |
2610 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2611 | variants exist too, simpler for plt calls since a new toc pointer | |
2612 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2613 | has some more complex stubs to handle calls marked with NOTOC | |
2614 | relocs from functions where r2 is not a valid toc pointer. These | |
2615 | come in two flavours, the ones shown below, and _both variants that | |
2616 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2617 | one call is from a function where r2 is used as the toc pointer but | |
2618 | needs a toc adjusting stub for small-model multi-toc, and another | |
2619 | call is from a function where r2 is not valid. | |
2620 | ppc_stub_long_branch_notoc: | |
2621 | . mflr %r12 | |
2622 | . bcl 20,31,1f | |
2623 | . 1: | |
2624 | . mflr %r11 | |
2625 | . mtlr %r12 | |
2cdcc330 AM |
2626 | . addis %r12,%r11,dest-1b@ha |
2627 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2628 | . b dest |
2629 | ||
2630 | ppc_stub_plt_branch_notoc: | |
2631 | . mflr %r12 | |
2632 | . bcl 20,31,1f | |
2633 | . 1: | |
2634 | . mflr %r11 | |
2635 | . mtlr %r12 | |
2636 | . lis %r12,xxx-1b@highest | |
2637 | . ori %r12,xxx-1b@higher | |
2638 | . sldi %r12,%r12,32 | |
2639 | . oris %r12,%r12,xxx-1b@hi | |
2640 | . ori %r12,%r12,xxx-1b@l | |
2641 | . add %r12,%r11,%r12 | |
2642 | . mtctr %r12 | |
2643 | . bctr | |
2644 | ||
2645 | ppc_stub_plt_call_notoc: | |
2646 | . mflr %r12 | |
2647 | . bcl 20,31,1f | |
2648 | . 1: | |
2649 | . mflr %r11 | |
2650 | . mtlr %r12 | |
2651 | . lis %r12,xxx-1b@highest | |
2652 | . ori %r12,xxx-1b@higher | |
2653 | . sldi %r12,%r12,32 | |
2654 | . oris %r12,%r12,xxx-1b@hi | |
2655 | . ori %r12,%r12,xxx-1b@l | |
2656 | . ldx %r12,%r11,%r12 | |
2657 | . mtctr %r12 | |
2658 | . bctr | |
2659 | ||
2660 | In cases where the high instructions would add zero, they are | |
2661 | omitted and following instructions modified in some cases. | |
2662 | ||
2663 | For a given stub group (a set of sections all using the same toc | |
2664 | pointer value) there will be just one stub type used for any | |
2665 | particular function symbol. For example, if printf is called from | |
2666 | code with the tocsave optimization (ie. r2 saved in function | |
2667 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2668 | and from other code without the tocsave optimization requiring a | |
2669 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2670 | type will be created. Calls with the tocsave optimization will | |
2671 | enter this stub after the instruction saving r2. A similar | |
2672 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2673 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2674 | to call an external function like printf. If other calls to printf | |
2675 | require a ppc_stub_plt_call linkage stub then a single | |
2676 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2677 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2678 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2679 | be created and calls not requiring r2 to be saved will enter the | |
2680 | stub after the r2 save instruction. There is an analogous | |
2681 | hierarchy of long branch and plt branch stubs for local call | |
2682 | linkage. */ | |
721956f4 | 2683 | |
2cdcc330 AM |
2684 | enum ppc_stub_type |
2685 | { | |
721956f4 AM |
2686 | ppc_stub_none, |
2687 | ppc_stub_long_branch, | |
ad8e1ba5 | 2688 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2689 | ppc_stub_long_branch_notoc, |
2690 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2691 | ppc_stub_plt_branch, |
ad8e1ba5 | 2692 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
2693 | ppc_stub_plt_branch_notoc, |
2694 | ppc_stub_plt_branch_both, | |
794e51c0 | 2695 | ppc_stub_plt_call, |
7341d5e2 | 2696 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
2697 | ppc_stub_plt_call_notoc, |
2698 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
2699 | ppc_stub_global_entry, |
2700 | ppc_stub_save_res | |
721956f4 AM |
2701 | }; |
2702 | ||
6f20ed8a AM |
2703 | /* Information on stub grouping. */ |
2704 | struct map_stub | |
2705 | { | |
2706 | /* The stub section. */ | |
2707 | asection *stub_sec; | |
2708 | /* This is the section to which stubs in the group will be attached. */ | |
2709 | asection *link_sec; | |
a4b6fadd AM |
2710 | /* Next group. */ |
2711 | struct map_stub *next; | |
2712 | /* Whether to emit a copy of register save/restore functions in this | |
2713 | group. */ | |
2714 | int needs_save_res; | |
df136d64 AM |
2715 | /* Current offset within stubs after the insn restoring lr in a |
2716 | _notoc or _both stub using bcl for pc-relative addressing, or | |
2717 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
2718 | unsigned int lr_restore; | |
2719 | /* Accumulated size of EH info emitted to describe return address | |
2720 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
2721 | unsigned int eh_size; | |
2722 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
2723 | unsigned int eh_base; | |
6f20ed8a AM |
2724 | }; |
2725 | ||
2cdcc330 AM |
2726 | struct ppc_stub_hash_entry |
2727 | { | |
721956f4 AM |
2728 | /* Base hash table entry structure. */ |
2729 | struct bfd_hash_entry root; | |
2730 | ||
ad8e1ba5 AM |
2731 | enum ppc_stub_type stub_type; |
2732 | ||
6f20ed8a AM |
2733 | /* Group information. */ |
2734 | struct map_stub *group; | |
721956f4 AM |
2735 | |
2736 | /* Offset within stub_sec of the beginning of this stub. */ | |
2737 | bfd_vma stub_offset; | |
2738 | ||
2739 | /* Given the symbol's value and its section we can determine its final | |
2740 | value when building the stubs (so the stub knows where to jump. */ | |
2741 | bfd_vma target_value; | |
2742 | asection *target_section; | |
2743 | ||
721956f4 AM |
2744 | /* The symbol table entry, if any, that this was derived from. */ |
2745 | struct ppc_link_hash_entry *h; | |
e054468f | 2746 | struct plt_entry *plt_ent; |
721956f4 | 2747 | |
2d7ad24e AM |
2748 | /* Symbol type. */ |
2749 | unsigned char symtype; | |
2750 | ||
6911b7dc AM |
2751 | /* Symbol st_other. */ |
2752 | unsigned char other; | |
721956f4 AM |
2753 | }; |
2754 | ||
2cdcc330 AM |
2755 | struct ppc_branch_hash_entry |
2756 | { | |
721956f4 AM |
2757 | /* Base hash table entry structure. */ |
2758 | struct bfd_hash_entry root; | |
2759 | ||
c456f082 | 2760 | /* Offset within branch lookup table. */ |
721956f4 AM |
2761 | unsigned int offset; |
2762 | ||
2763 | /* Generation marker. */ | |
2764 | unsigned int iter; | |
2765 | }; | |
65f38f15 | 2766 | |
19e08130 AM |
2767 | /* Used to track dynamic relocations for local symbols. */ |
2768 | struct ppc_dyn_relocs | |
2769 | { | |
2770 | struct ppc_dyn_relocs *next; | |
2771 | ||
2772 | /* The input section of the reloc. */ | |
2773 | asection *sec; | |
2774 | ||
2775 | /* Total number of relocs copied for the input section. */ | |
2776 | unsigned int count : 31; | |
2777 | ||
2778 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
2779 | unsigned int ifunc : 1; | |
2780 | }; | |
2781 | ||
65f38f15 AM |
2782 | struct ppc_link_hash_entry |
2783 | { | |
2784 | struct elf_link_hash_entry elf; | |
2785 | ||
2cdcc330 AM |
2786 | union |
2787 | { | |
b3fac117 AM |
2788 | /* A pointer to the most recently used stub hash entry against this |
2789 | symbol. */ | |
2790 | struct ppc_stub_hash_entry *stub_cache; | |
2791 | ||
2792 | /* A pointer to the next symbol starting with a '.' */ | |
2793 | struct ppc_link_hash_entry *next_dot_sym; | |
2794 | } u; | |
721956f4 | 2795 | |
65f38f15 | 2796 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 2797 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 2798 | |
721956f4 | 2799 | /* Link between function code and descriptor symbols. */ |
34814b9f | 2800 | struct ppc_link_hash_entry *oh; |
721956f4 | 2801 | |
e86ce104 AM |
2802 | /* Flag function code and descriptor symbols. */ |
2803 | unsigned int is_func:1; | |
2804 | unsigned int is_func_descriptor:1; | |
908b32fc | 2805 | unsigned int fake:1; |
411e1bfb | 2806 | |
c5614fa4 AM |
2807 | /* Whether global opd/toc sym has been adjusted or not. |
2808 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
2809 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
2810 | unsigned int adjust_done:1; |
2811 | ||
a4b6fadd AM |
2812 | /* Set if this is an out-of-line register save/restore function, |
2813 | with non-standard calling convention. */ | |
2814 | unsigned int save_res:1; | |
2815 | ||
8b5f1ed8 AM |
2816 | /* Set if a duplicate symbol with non-zero localentry is detected, |
2817 | even when the duplicate symbol does not provide a definition. */ | |
2818 | unsigned int non_zero_localentry:1; | |
2819 | ||
411e1bfb | 2820 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
2821 | Bits are or'd into the mask as the corresponding relocs are |
2822 | encountered during check_relocs, with TLS_TLS being set when any | |
2823 | of the other TLS bits are set. tls_optimize clears bits when | |
2824 | optimizing to indicate the corresponding GOT entry type is not | |
2825 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
2826 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
2827 | separate flag rather than setting TPREL just for convenience in | |
2828 | distinguishing the two cases. | |
2829 | These flags are also kept for local symbols. */ | |
2830 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
2831 | #define TLS_GD 2 /* GD reloc. */ | |
2832 | #define TLS_LD 4 /* LD reloc. */ | |
2833 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
2834 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
2835 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 2836 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 2837 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 2838 | unsigned char tls_mask; |
37da22e5 AM |
2839 | |
2840 | /* The above field is also used to mark function symbols. In which | |
2841 | case TLS_TLS will be 0. */ | |
2842 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 2843 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 2844 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
2845 | }; |
2846 | ||
2847 | /* ppc64 ELF linker hash table. */ | |
2848 | ||
2849 | struct ppc_link_hash_table | |
2850 | { | |
2851 | struct elf_link_hash_table elf; | |
2852 | ||
721956f4 AM |
2853 | /* The stub hash table. */ |
2854 | struct bfd_hash_table stub_hash_table; | |
2855 | ||
2856 | /* Another hash table for plt_branch stubs. */ | |
2857 | struct bfd_hash_table branch_hash_table; | |
2858 | ||
3b421ab3 AM |
2859 | /* Hash table for function prologue tocsave. */ |
2860 | htab_t tocsave_htab; | |
2861 | ||
e7d1c40c AM |
2862 | /* Various options and other info passed from the linker. */ |
2863 | struct ppc64_elf_params *params; | |
721956f4 | 2864 | |
6f20ed8a AM |
2865 | /* The size of sec_info below. */ |
2866 | unsigned int sec_info_arr_size; | |
2867 | ||
2868 | /* Per-section array of extra section info. Done this way rather | |
2869 | than as part of ppc64_elf_section_data so we have the info for | |
2870 | non-ppc64 sections. */ | |
2871 | struct | |
2872 | { | |
2873 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 2874 | bfd_vma toc_off; |
6f20ed8a AM |
2875 | |
2876 | union | |
2877 | { | |
2878 | /* The section group that this section belongs to. */ | |
2879 | struct map_stub *group; | |
2880 | /* A temp section list pointer. */ | |
2881 | asection *list; | |
2882 | } u; | |
2883 | } *sec_info; | |
721956f4 | 2884 | |
a4b6fadd AM |
2885 | /* Linked list of groups. */ |
2886 | struct map_stub *group; | |
2887 | ||
ad8e1ba5 AM |
2888 | /* Temp used when calculating TOC pointers. */ |
2889 | bfd_vma toc_curr; | |
bf102f86 AM |
2890 | bfd *toc_bfd; |
2891 | asection *toc_first_sec; | |
ad8e1ba5 | 2892 | |
b3fac117 AM |
2893 | /* Used when adding symbols. */ |
2894 | struct ppc_link_hash_entry *dot_syms; | |
2895 | ||
33e44f2e | 2896 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 2897 | asection *glink; |
9e390558 | 2898 | asection *global_entry; |
82bd7b59 | 2899 | asection *sfpr; |
2d7ad24e AM |
2900 | asection *pltlocal; |
2901 | asection *relpltlocal; | |
4ce794b7 AM |
2902 | asection *brlt; |
2903 | asection *relbrlt; | |
58d180e8 | 2904 | asection *glink_eh_frame; |
ec338859 | 2905 | |
8387904d AM |
2906 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
2907 | struct ppc_link_hash_entry *tls_get_addr; | |
2908 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 2909 | |
927be08e AM |
2910 | /* The size of reliplt used by got entry relocs. */ |
2911 | bfd_size_type got_reli_size; | |
2912 | ||
9b5ecbd0 | 2913 | /* Statistics. */ |
7341d5e2 | 2914 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 2915 | |
ee75fd95 AM |
2916 | /* Number of stubs against global syms. */ |
2917 | unsigned long stub_globals; | |
2918 | ||
ee67d69a AM |
2919 | /* Set if we're linking code with function descriptors. */ |
2920 | unsigned int opd_abi:1; | |
2921 | ||
4c52953f | 2922 | /* Support for multiple toc sections. */ |
33c0ec9d | 2923 | unsigned int do_multi_toc:1; |
4c52953f | 2924 | unsigned int multi_toc_needed:1; |
927be08e | 2925 | unsigned int second_toc_pass:1; |
67f0cbdb | 2926 | unsigned int do_toc_opt:1; |
4c52953f | 2927 | |
9a23f96e AM |
2928 | /* Set if tls optimization is enabled. */ |
2929 | unsigned int do_tls_opt:1; | |
2930 | ||
3e04d765 AM |
2931 | /* Set if inline plt calls should be converted to direct calls. */ |
2932 | unsigned int can_convert_all_inline_plt:1; | |
2933 | ||
5d1634d7 | 2934 | /* Set on error. */ |
99877b66 | 2935 | unsigned int stub_error:1; |
721956f4 | 2936 | |
8c5b4e52 AM |
2937 | /* Whether func_desc_adjust needs to be run over symbols. */ |
2938 | unsigned int need_func_desc_adj:1; | |
721956f4 | 2939 | |
82e66161 AM |
2940 | /* Whether there exist local gnu indirect function resolvers, |
2941 | referenced by dynamic relocations. */ | |
2942 | unsigned int local_ifunc_resolver:1; | |
2943 | unsigned int maybe_local_ifunc_resolver:1; | |
2944 | ||
f378ab09 AM |
2945 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
2946 | unsigned int has_plt_localentry0:1; | |
2947 | ||
721956f4 AM |
2948 | /* Incremented every time we size stubs. */ |
2949 | unsigned int stub_iteration; | |
5d1634d7 | 2950 | |
87d72d41 AM |
2951 | /* Small local sym cache. */ |
2952 | struct sym_cache sym_cache; | |
65f38f15 AM |
2953 | }; |
2954 | ||
4c52953f AM |
2955 | /* Rename some of the generic section flags to better document how they |
2956 | are used here. */ | |
b0dddeec AM |
2957 | |
2958 | /* Nonzero if this section has TLS related relocations. */ | |
2959 | #define has_tls_reloc sec_flg0 | |
2960 | ||
23cedd1d | 2961 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
2962 | #define has_tls_get_addr_call sec_flg1 |
2963 | ||
2964 | /* Nonzero if this section has any toc or got relocs. */ | |
2965 | #define has_toc_reloc sec_flg2 | |
2966 | ||
2967 | /* Nonzero if this section has a call to another section that uses | |
2968 | the toc or got. */ | |
d77c8a4b | 2969 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
2970 | |
2971 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 2972 | #define call_check_in_progress sec_flg4 |
70cc837d | 2973 | #define call_check_done sec_flg5 |
4c52953f | 2974 | |
65f38f15 AM |
2975 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
2976 | ||
2977 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
2978 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
2979 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 2980 | |
721956f4 AM |
2981 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
2982 | ((struct ppc_stub_hash_entry *) \ | |
2983 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2984 | ||
2985 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
2986 | ((struct ppc_branch_hash_entry *) \ | |
2987 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2988 | ||
2989 | /* Create an entry in the stub hash table. */ | |
2990 | ||
2991 | static struct bfd_hash_entry * | |
4ce794b7 AM |
2992 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
2993 | struct bfd_hash_table *table, | |
2994 | const char *string) | |
721956f4 AM |
2995 | { |
2996 | /* Allocate the structure if it has not already been allocated by a | |
2997 | subclass. */ | |
2998 | if (entry == NULL) | |
2999 | { | |
3000 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3001 | if (entry == NULL) | |
3002 | return entry; | |
3003 | } | |
3004 | ||
3005 | /* Call the allocation method of the superclass. */ | |
3006 | entry = bfd_hash_newfunc (entry, table, string); | |
3007 | if (entry != NULL) | |
3008 | { | |
3009 | struct ppc_stub_hash_entry *eh; | |
3010 | ||
3011 | /* Initialize the local fields. */ | |
3012 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3013 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3014 | eh->group = NULL; |
721956f4 AM |
3015 | eh->stub_offset = 0; |
3016 | eh->target_value = 0; | |
3017 | eh->target_section = NULL; | |
721956f4 | 3018 | eh->h = NULL; |
6911b7dc | 3019 | eh->plt_ent = NULL; |
6911b7dc | 3020 | eh->other = 0; |
721956f4 AM |
3021 | } |
3022 | ||
3023 | return entry; | |
3024 | } | |
3025 | ||
3026 | /* Create an entry in the branch hash table. */ | |
3027 | ||
3028 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3029 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3030 | struct bfd_hash_table *table, | |
3031 | const char *string) | |
721956f4 AM |
3032 | { |
3033 | /* Allocate the structure if it has not already been allocated by a | |
3034 | subclass. */ | |
3035 | if (entry == NULL) | |
3036 | { | |
3037 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3038 | if (entry == NULL) | |
3039 | return entry; | |
3040 | } | |
3041 | ||
3042 | /* Call the allocation method of the superclass. */ | |
3043 | entry = bfd_hash_newfunc (entry, table, string); | |
3044 | if (entry != NULL) | |
3045 | { | |
3046 | struct ppc_branch_hash_entry *eh; | |
3047 | ||
3048 | /* Initialize the local fields. */ | |
3049 | eh = (struct ppc_branch_hash_entry *) entry; | |
3050 | eh->offset = 0; | |
3051 | eh->iter = 0; | |
3052 | } | |
3053 | ||
3054 | return entry; | |
3055 | } | |
3056 | ||
65f38f15 AM |
3057 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3058 | ||
3059 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3060 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3061 | struct bfd_hash_table *table, | |
3062 | const char *string) | |
65f38f15 AM |
3063 | { |
3064 | /* Allocate the structure if it has not already been allocated by a | |
3065 | subclass. */ | |
3066 | if (entry == NULL) | |
3067 | { | |
3068 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3069 | if (entry == NULL) | |
3070 | return entry; | |
3071 | } | |
3072 | ||
3073 | /* Call the allocation method of the superclass. */ | |
3074 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3075 | if (entry != NULL) | |
3076 | { | |
3077 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3078 | ||
b3fac117 | 3079 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3080 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3081 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3082 | ||
3083 | /* When making function calls, old ABI code references function entry | |
3084 | points (dot symbols), while new ABI code references the function | |
3085 | descriptor symbol. We need to make any combination of reference and | |
3086 | definition work together, without breaking archive linking. | |
3087 | ||
3088 | For a defined function "foo" and an undefined call to "bar": | |
3089 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3090 | "bar" too). | |
3091 | A new object defines "foo" and references "bar". | |
3092 | ||
3093 | A new object thus has no problem with its undefined symbols being | |
3094 | satisfied by definitions in an old object. On the other hand, the | |
3095 | old object won't have ".bar" satisfied by a new object. | |
3096 | ||
3097 | Keep a list of newly added dot-symbols. */ | |
3098 | ||
3099 | if (string[0] == '.') | |
3100 | { | |
3101 | struct ppc_link_hash_table *htab; | |
3102 | ||
3103 | htab = (struct ppc_link_hash_table *) table; | |
3104 | eh->u.next_dot_sym = htab->dot_syms; | |
3105 | htab->dot_syms = eh; | |
3106 | } | |
65f38f15 AM |
3107 | } |
3108 | ||
3109 | return entry; | |
3110 | } | |
3111 | ||
2cdcc330 AM |
3112 | struct tocsave_entry |
3113 | { | |
3b421ab3 AM |
3114 | asection *sec; |
3115 | bfd_vma offset; | |
3116 | }; | |
3117 | ||
3118 | static hashval_t | |
3119 | tocsave_htab_hash (const void *p) | |
3120 | { | |
3121 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3122 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3123 | } |
3124 | ||
3125 | static int | |
3126 | tocsave_htab_eq (const void *p1, const void *p2) | |
3127 | { | |
3128 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3129 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3130 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3131 | } | |
3132 | ||
68faa637 AM |
3133 | /* Destroy a ppc64 ELF linker hash table. */ |
3134 | ||
3135 | static void | |
d495ab0d | 3136 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3137 | { |
d495ab0d | 3138 | struct ppc_link_hash_table *htab; |
68faa637 | 3139 | |
d495ab0d | 3140 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3141 | if (htab->tocsave_htab) |
3142 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3143 | bfd_hash_table_free (&htab->branch_hash_table); |
3144 | bfd_hash_table_free (&htab->stub_hash_table); | |
3145 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3146 | } |
3147 | ||
65f38f15 AM |
3148 | /* Create a ppc64 ELF linker hash table. */ |
3149 | ||
3150 | static struct bfd_link_hash_table * | |
4ce794b7 | 3151 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3152 | { |
3153 | struct ppc_link_hash_table *htab; | |
3154 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3155 | ||
4ce794b7 | 3156 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3157 | if (htab == NULL) |
3158 | return NULL; | |
3159 | ||
66eb6687 | 3160 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3161 | sizeof (struct ppc_link_hash_entry), |
3162 | PPC64_ELF_DATA)) | |
65f38f15 | 3163 | { |
e2d34d7d | 3164 | free (htab); |
65f38f15 AM |
3165 | return NULL; |
3166 | } | |
3167 | ||
721956f4 | 3168 | /* Init the stub hash table too. */ |
66eb6687 AM |
3169 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3170 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3171 | { |
d495ab0d | 3172 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3173 | return NULL; |
3174 | } | |
721956f4 AM |
3175 | |
3176 | /* And the branch hash table. */ | |
66eb6687 AM |
3177 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3178 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3179 | { |
3180 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3181 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3182 | return NULL; |
3183 | } | |
721956f4 | 3184 | |
3b421ab3 AM |
3185 | htab->tocsave_htab = htab_try_create (1024, |
3186 | tocsave_htab_hash, | |
3187 | tocsave_htab_eq, | |
3188 | NULL); | |
3189 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3190 | { |
d495ab0d | 3191 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3192 | return NULL; |
3193 | } | |
d495ab0d | 3194 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3195 | |
3254fd24 AM |
3196 | /* Initializing two fields of the union is just cosmetic. We really |
3197 | only care about glist, but when compiled on a 32-bit host the | |
3198 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3199 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3200 | htab->elf.init_got_refcount.refcount = 0; |
3201 | htab->elf.init_got_refcount.glist = NULL; | |
3202 | htab->elf.init_plt_refcount.refcount = 0; | |
3203 | htab->elf.init_plt_refcount.glist = NULL; | |
3204 | htab->elf.init_got_offset.offset = 0; | |
3205 | htab->elf.init_got_offset.glist = NULL; | |
3206 | htab->elf.init_plt_offset.offset = 0; | |
3207 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3208 | |
65f38f15 AM |
3209 | return &htab->elf.root; |
3210 | } | |
3211 | ||
bfeb4a28 AM |
3212 | /* Create sections for linker generated code. */ |
3213 | ||
3214 | static bfd_boolean | |
3215 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3216 | { | |
3217 | struct ppc_link_hash_table *htab; | |
3218 | flagword flags; | |
3219 | ||
3220 | htab = ppc_hash_table (info); | |
3221 | ||
bfeb4a28 AM |
3222 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3223 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3224 | if (htab->params->save_restore_funcs) |
3225 | { | |
3226 | /* Create .sfpr for code to save and restore fp regs. */ | |
3227 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3228 | flags); | |
3229 | if (htab->sfpr == NULL | |
2cdcc330 | 3230 | || !bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b32547cd AM |
3231 | return FALSE; |
3232 | } | |
3233 | ||
3234 | if (bfd_link_relocatable (info)) | |
3235 | return TRUE; | |
bfeb4a28 AM |
3236 | |
3237 | /* Create .glink for lazy dynamic linking support. */ | |
3238 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3239 | flags); | |
3240 | if (htab->glink == NULL | |
2cdcc330 | 3241 | || !bfd_set_section_alignment (dynobj, htab->glink, 3)) |
bfeb4a28 AM |
3242 | return FALSE; |
3243 | ||
9e390558 AM |
3244 | /* The part of .glink used by global entry stubs, separate so that |
3245 | it can be aligned appropriately without affecting htab->glink. */ | |
3246 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3247 | flags); | |
3248 | if (htab->global_entry == NULL | |
2cdcc330 | 3249 | || !bfd_set_section_alignment (dynobj, htab->global_entry, 2)) |
9e390558 AM |
3250 | return FALSE; |
3251 | ||
bfeb4a28 AM |
3252 | if (!info->no_ld_generated_unwind_info) |
3253 | { | |
3254 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3255 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3256 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3257 | ".eh_frame", | |
3258 | flags); | |
3259 | if (htab->glink_eh_frame == NULL | |
3260 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
3261 | return FALSE; | |
3262 | } | |
3263 | ||
3264 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3265 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3266 | if (htab->elf.iplt == NULL | |
2cdcc330 | 3267 | || !bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) |
bfeb4a28 AM |
3268 | return FALSE; |
3269 | ||
3270 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3271 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3272 | htab->elf.irelplt |
3273 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3274 | if (htab->elf.irelplt == NULL | |
2cdcc330 | 3275 | || !bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3276 | return FALSE; |
3277 | ||
3278 | /* Create branch lookup table for plt_branch stubs. */ | |
3279 | flags = (SEC_ALLOC | SEC_LOAD | |
3280 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3281 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3282 | flags); | |
3283 | if (htab->brlt == NULL | |
2cdcc330 | 3284 | || !bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
bfeb4a28 AM |
3285 | return FALSE; |
3286 | ||
2d7ad24e AM |
3287 | /* Local plt entries, put in .branch_lt but a separate section for |
3288 | convenience. */ | |
3289 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3290 | flags); | |
3291 | if (htab->pltlocal == NULL | |
2cdcc330 | 3292 | || !bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) |
2d7ad24e AM |
3293 | return FALSE; |
3294 | ||
0e1862bb | 3295 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3296 | return TRUE; |
3297 | ||
3298 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3299 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3300 | htab->relbrlt |
3301 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3302 | if (htab->relbrlt == NULL |
2cdcc330 | 3303 | || !bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
bfeb4a28 AM |
3304 | return FALSE; |
3305 | ||
2d7ad24e AM |
3306 | htab->relpltlocal |
3307 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3308 | if (htab->relpltlocal == NULL | |
2cdcc330 | 3309 | || !bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) |
2d7ad24e AM |
3310 | return FALSE; |
3311 | ||
bfeb4a28 AM |
3312 | return TRUE; |
3313 | } | |
3314 | ||
e717da7e AM |
3315 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3316 | ||
bfeb4a28 | 3317 | bfd_boolean |
e7d1c40c AM |
3318 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3319 | struct ppc64_elf_params *params) | |
e717da7e AM |
3320 | { |
3321 | struct ppc_link_hash_table *htab; | |
3322 | ||
e7d1c40c | 3323 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3324 | |
3325 | /* Always hook our dynamic sections into the first bfd, which is the | |
3326 | linker created stub bfd. This ensures that the GOT header is at | |
3327 | the start of the output TOC section. */ | |
3328 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3329 | htab->elf.dynobj = params->stub_bfd; |
3330 | htab->params = params; | |
bfeb4a28 | 3331 | |
bfeb4a28 | 3332 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3333 | } |
3334 | ||
721956f4 AM |
3335 | /* Build a name for an entry in the stub hash table. */ |
3336 | ||
3337 | static char * | |
4ce794b7 AM |
3338 | ppc_stub_name (const asection *input_section, |
3339 | const asection *sym_sec, | |
3340 | const struct ppc_link_hash_entry *h, | |
3341 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3342 | { |
3343 | char *stub_name; | |
bcaa2f82 | 3344 | ssize_t len; |
721956f4 AM |
3345 | |
3346 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3347 | offsets from a sym as a branch target? In fact, we could | |
3348 | probably assume the addend is always zero. */ | |
3349 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3350 | ||
3351 | if (h) | |
3352 | { | |
3353 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3354 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3355 | if (stub_name == NULL) |
3356 | return stub_name; | |
3357 | ||
bcaa2f82 AM |
3358 | len = sprintf (stub_name, "%08x.%s+%x", |
3359 | input_section->id & 0xffffffff, | |
3360 | h->elf.root.root.string, | |
3361 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3362 | } |
3363 | else | |
3364 | { | |
ad8e1ba5 | 3365 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3366 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3367 | if (stub_name == NULL) |
3368 | return stub_name; | |
3369 | ||
bcaa2f82 AM |
3370 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3371 | input_section->id & 0xffffffff, | |
3372 | sym_sec->id & 0xffffffff, | |
3373 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3374 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3375 | } |
bcaa2f82 | 3376 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3377 | stub_name[len - 2] = 0; |
721956f4 AM |
3378 | return stub_name; |
3379 | } | |
3380 | ||
3381 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3382 | creating the stub name takes a bit of time. */ | |
3383 | ||
3384 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3385 | ppc_get_stub_entry (const asection *input_section, |
3386 | const asection *sym_sec, | |
039b3fef | 3387 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3388 | const Elf_Internal_Rela *rel, |
3389 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3390 | { |
3391 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3392 | struct map_stub *group; |
721956f4 AM |
3393 | |
3394 | /* If this input section is part of a group of sections sharing one | |
3395 | stub section, then use the id of the first section in the group. | |
3396 | Stub names need to include a section id, as there may well be | |
3397 | more than one stub used to reach say, printf, and we need to | |
3398 | distinguish between them. */ | |
6f20ed8a | 3399 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3400 | if (group == NULL) |
3401 | return NULL; | |
721956f4 | 3402 | |
b3fac117 AM |
3403 | if (h != NULL && h->u.stub_cache != NULL |
3404 | && h->u.stub_cache->h == h | |
6f20ed8a | 3405 | && h->u.stub_cache->group == group) |
721956f4 | 3406 | { |
b3fac117 | 3407 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3408 | } |
3409 | else | |
3410 | { | |
3411 | char *stub_name; | |
3412 | ||
6f20ed8a | 3413 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3414 | if (stub_name == NULL) |
3415 | return NULL; | |
3416 | ||
3417 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3418 | stub_name, FALSE, FALSE); |
721956f4 | 3419 | if (h != NULL) |
b3fac117 | 3420 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3421 | |
3422 | free (stub_name); | |
3423 | } | |
3424 | ||
3425 | return stub_entry; | |
3426 | } | |
3427 | ||
3428 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3429 | stub entry are initialised. */ | |
3430 | ||
3431 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3432 | ppc_add_stub (const char *stub_name, |
3433 | asection *section, | |
25f53a85 | 3434 | struct bfd_link_info *info) |
721956f4 | 3435 | { |
25f53a85 | 3436 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3437 | struct map_stub *group; |
721956f4 AM |
3438 | asection *link_sec; |
3439 | asection *stub_sec; | |
3440 | struct ppc_stub_hash_entry *stub_entry; | |
3441 | ||
6f20ed8a AM |
3442 | group = htab->sec_info[section->id].u.group; |
3443 | link_sec = group->link_sec; | |
3444 | stub_sec = group->stub_sec; | |
721956f4 AM |
3445 | if (stub_sec == NULL) |
3446 | { | |
6f20ed8a AM |
3447 | size_t namelen; |
3448 | bfd_size_type len; | |
3449 | char *s_name; | |
721956f4 | 3450 | |
6f20ed8a AM |
3451 | namelen = strlen (link_sec->name); |
3452 | len = namelen + sizeof (STUB_SUFFIX); | |
3453 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3454 | if (s_name == NULL) | |
3455 | return NULL; | |
721956f4 | 3456 | |
6f20ed8a AM |
3457 | memcpy (s_name, link_sec->name, namelen); |
3458 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3459 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3460 | if (stub_sec == NULL) | |
3461 | return NULL; | |
3462 | group->stub_sec = stub_sec; | |
721956f4 AM |
3463 | } |
3464 | ||
3465 | /* Enter this entry into the linker stub hash table. */ | |
3466 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3467 | TRUE, FALSE); |
721956f4 AM |
3468 | if (stub_entry == NULL) |
3469 | { | |
695344c0 | 3470 | /* xgettext:c-format */ |
cf97bcb0 AM |
3471 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3472 | section->owner, stub_name); | |
721956f4 AM |
3473 | return NULL; |
3474 | } | |
3475 | ||
6f20ed8a | 3476 | stub_entry->group = group; |
721956f4 | 3477 | stub_entry->stub_offset = 0; |
721956f4 AM |
3478 | return stub_entry; |
3479 | } | |
3480 | ||
e717da7e AM |
3481 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3482 | not already done. */ | |
65f38f15 | 3483 | |
b34976b6 | 3484 | static bfd_boolean |
e717da7e | 3485 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3486 | { |
e717da7e AM |
3487 | asection *got, *relgot; |
3488 | flagword flags; | |
3489 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3490 | |
0c8d6e5c | 3491 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3492 | return FALSE; |
4dfe6ac6 NC |
3493 | if (htab == NULL) |
3494 | return FALSE; | |
0ffa91dd | 3495 | |
33e44f2e AM |
3496 | if (!htab->elf.sgot |
3497 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3498 | return FALSE; | |
e717da7e AM |
3499 | |
3500 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3501 | | SEC_LINKER_CREATED); | |
3502 | ||
c456f082 | 3503 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3504 | if (!got |
e717da7e AM |
3505 | || !bfd_set_section_alignment (abfd, got, 3)) |
3506 | return FALSE; | |
65f38f15 | 3507 | |
c456f082 AM |
3508 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3509 | flags | SEC_READONLY); | |
e717da7e | 3510 | if (!relgot |
2cdcc330 | 3511 | || !bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3512 | return FALSE; |
e717da7e AM |
3513 | |
3514 | ppc64_elf_tdata (abfd)->got = got; | |
3515 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3516 | return TRUE; |
65f38f15 | 3517 | } |
5bd4f169 | 3518 | |
b31867b6 AM |
3519 | /* Follow indirect and warning symbol links. */ |
3520 | ||
3521 | static inline struct bfd_link_hash_entry * | |
3522 | follow_link (struct bfd_link_hash_entry *h) | |
3523 | { | |
3524 | while (h->type == bfd_link_hash_indirect | |
3525 | || h->type == bfd_link_hash_warning) | |
3526 | h = h->u.i.link; | |
3527 | return h; | |
3528 | } | |
3529 | ||
3530 | static inline struct elf_link_hash_entry * | |
3531 | elf_follow_link (struct elf_link_hash_entry *h) | |
3532 | { | |
3533 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3534 | } | |
3535 | ||
3536 | static inline struct ppc_link_hash_entry * | |
3537 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3538 | { | |
3539 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
3540 | } | |
3541 | ||
40d16e0b AM |
3542 | /* Merge PLT info on FROM with that on TO. */ |
3543 | ||
3544 | static void | |
3545 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3546 | struct ppc_link_hash_entry *to) | |
3547 | { | |
3548 | if (from->elf.plt.plist != NULL) | |
3549 | { | |
3550 | if (to->elf.plt.plist != NULL) | |
3551 | { | |
3552 | struct plt_entry **entp; | |
3553 | struct plt_entry *ent; | |
3554 | ||
3555 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3556 | { | |
3557 | struct plt_entry *dent; | |
3558 | ||
3559 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3560 | if (dent->addend == ent->addend) | |
3561 | { | |
3562 | dent->plt.refcount += ent->plt.refcount; | |
3563 | *entp = ent->next; | |
3564 | break; | |
3565 | } | |
3566 | if (dent == NULL) | |
3567 | entp = &ent->next; | |
3568 | } | |
3569 | *entp = to->elf.plt.plist; | |
3570 | } | |
3571 | ||
3572 | to->elf.plt.plist = from->elf.plt.plist; | |
3573 | from->elf.plt.plist = NULL; | |
3574 | } | |
3575 | } | |
3576 | ||
65f38f15 AM |
3577 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3578 | ||
3579 | static void | |
fcfa13d2 AM |
3580 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3581 | struct elf_link_hash_entry *dir, | |
3582 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3583 | { |
3584 | struct ppc_link_hash_entry *edir, *eind; | |
3585 | ||
3586 | edir = (struct ppc_link_hash_entry *) dir; | |
3587 | eind = (struct ppc_link_hash_entry *) ind; | |
3588 | ||
c79d6685 AM |
3589 | edir->is_func |= eind->is_func; |
3590 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3591 | edir->tls_mask |= eind->tls_mask; | |
3592 | if (eind->oh != NULL) | |
3593 | edir->oh = ppc_follow_link (eind->oh); | |
3594 | ||
474436e6 | 3595 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3596 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3597 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3598 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3599 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3600 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3601 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3602 | |
d311bc8b AM |
3603 | /* If we were called to copy over info for a weak sym, don't copy |
3604 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3605 | in order to simplify readonly_dynrelocs and save a field in the | |
3606 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3607 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3608 | are then tested. */ |
d311bc8b | 3609 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3610 | return; |
d311bc8b | 3611 | |
411e1bfb | 3612 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3613 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3614 | { |
bbd7ec4a AM |
3615 | if (edir->dyn_relocs != NULL) |
3616 | { | |
6061a67d AM |
3617 | struct elf_dyn_relocs **pp; |
3618 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3619 | |
fcfa13d2 | 3620 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3621 | list. Merge any entries against the same section. */ |
3622 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3623 | { | |
6061a67d | 3624 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
3625 | |
3626 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3627 | if (q->sec == p->sec) | |
3628 | { | |
3629 | q->pc_count += p->pc_count; | |
3630 | q->count += p->count; | |
3631 | *pp = p->next; | |
3632 | break; | |
3633 | } | |
3634 | if (q == NULL) | |
3635 | pp = &p->next; | |
3636 | } | |
3637 | *pp = edir->dyn_relocs; | |
3638 | } | |
3639 | ||
65f38f15 AM |
3640 | edir->dyn_relocs = eind->dyn_relocs; |
3641 | eind->dyn_relocs = NULL; | |
3642 | } | |
65f38f15 | 3643 | |
81848ca0 AM |
3644 | /* Copy over got entries that we may have already seen to the |
3645 | symbol which just became indirect. */ | |
411e1bfb AM |
3646 | if (eind->elf.got.glist != NULL) |
3647 | { | |
3648 | if (edir->elf.got.glist != NULL) | |
3649 | { | |
3650 | struct got_entry **entp; | |
3651 | struct got_entry *ent; | |
3652 | ||
3653 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3654 | { | |
3655 | struct got_entry *dent; | |
3656 | ||
3657 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3658 | if (dent->addend == ent->addend | |
e717da7e | 3659 | && dent->owner == ent->owner |
411e1bfb AM |
3660 | && dent->tls_type == ent->tls_type) |
3661 | { | |
3662 | dent->got.refcount += ent->got.refcount; | |
3663 | *entp = ent->next; | |
3664 | break; | |
3665 | } | |
3666 | if (dent == NULL) | |
3667 | entp = &ent->next; | |
3668 | } | |
3669 | *entp = edir->elf.got.glist; | |
3670 | } | |
3671 | ||
3672 | edir->elf.got.glist = eind->elf.got.glist; | |
3673 | eind->elf.got.glist = NULL; | |
3674 | } | |
3675 | ||
3676 | /* And plt entries. */ | |
40d16e0b | 3677 | move_plt_plist (eind, edir); |
411e1bfb | 3678 | |
fcfa13d2 | 3679 | if (eind->elf.dynindx != -1) |
411e1bfb | 3680 | { |
fcfa13d2 AM |
3681 | if (edir->elf.dynindx != -1) |
3682 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3683 | edir->elf.dynstr_index); | |
411e1bfb AM |
3684 | edir->elf.dynindx = eind->elf.dynindx; |
3685 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3686 | eind->elf.dynindx = -1; | |
3687 | eind->elf.dynstr_index = 0; | |
3688 | } | |
411e1bfb AM |
3689 | } |
3690 | ||
8387904d AM |
3691 | /* Find the function descriptor hash entry from the given function code |
3692 | hash entry FH. Link the entries via their OH fields. */ | |
3693 | ||
3694 | static struct ppc_link_hash_entry * | |
b31867b6 | 3695 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
3696 | { |
3697 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3698 | ||
3699 | if (fdh == NULL) | |
3700 | { | |
3701 | const char *fd_name = fh->elf.root.root.string + 1; | |
3702 | ||
3703 | fdh = (struct ppc_link_hash_entry *) | |
3704 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
3705 | if (fdh == NULL) |
3706 | return fdh; | |
3707 | ||
3708 | fdh->is_func_descriptor = 1; | |
3709 | fdh->oh = fh; | |
3710 | fh->is_func = 1; | |
3711 | fh->oh = fdh; | |
8387904d AM |
3712 | } |
3713 | ||
8c5b4e52 AM |
3714 | fdh = ppc_follow_link (fdh); |
3715 | fdh->is_func_descriptor = 1; | |
3716 | fdh->oh = fh; | |
3717 | return fdh; | |
8387904d AM |
3718 | } |
3719 | ||
8c5b4e52 | 3720 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
3721 | |
3722 | static struct ppc_link_hash_entry * | |
3723 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 3724 | struct ppc_link_hash_entry *fh) |
bb700d78 | 3725 | { |
8c5b4e52 AM |
3726 | bfd *abfd = fh->elf.root.u.undef.abfd; |
3727 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 3728 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
3729 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
3730 | ? BSF_WEAK | |
3731 | : BSF_GLOBAL); | |
3732 | ||
3733 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
3734 | fh->elf.root.root.string + 1, | |
3735 | flags, bfd_und_section_ptr, 0, | |
3736 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
3737 | return NULL; |
3738 | ||
3739 | fdh = (struct ppc_link_hash_entry *) bh; | |
3740 | fdh->elf.non_elf = 0; | |
908b32fc AM |
3741 | fdh->fake = 1; |
3742 | fdh->is_func_descriptor = 1; | |
3743 | fdh->oh = fh; | |
3744 | fh->is_func = 1; | |
3745 | fh->oh = fdh; | |
bb700d78 AM |
3746 | return fdh; |
3747 | } | |
3748 | ||
8387904d AM |
3749 | /* Fix function descriptor symbols defined in .opd sections to be |
3750 | function type. */ | |
555cd476 AM |
3751 | |
3752 | static bfd_boolean | |
c16153ae | 3753 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 3754 | struct bfd_link_info *info, |
555cd476 | 3755 | Elf_Internal_Sym *isym, |
6911b7dc | 3756 | const char **name, |
555cd476 AM |
3757 | flagword *flags ATTRIBUTE_UNUSED, |
3758 | asection **sec, | |
b53dfeb2 | 3759 | bfd_vma *value) |
555cd476 | 3760 | { |
b53dfeb2 | 3761 | if (*sec != NULL |
f1885d1e | 3762 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
3763 | { |
3764 | asection *code_sec; | |
3765 | ||
3766 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
3767 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
3768 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
3769 | ||
3770 | /* If the symbol is a function defined in .opd, and the function | |
3771 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 3772 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
3773 | && (*sec)->reloc_count != 0 |
3774 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
3775 | FALSE) != (bfd_vma) -1 | |
3776 | && discarded_section (code_sec)) | |
3777 | { | |
3778 | *sec = bfd_und_section_ptr; | |
3779 | isym->st_shndx = SHN_UNDEF; | |
3780 | } | |
3781 | } | |
dbd1e97e AM |
3782 | else if (*sec != NULL |
3783 | && strcmp ((*sec)->name, ".toc") == 0 | |
3784 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
3785 | { | |
3786 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
3787 | if (htab != NULL) | |
3788 | htab->params->object_in_toc = 1; | |
3789 | } | |
433817dd | 3790 | |
6911b7dc AM |
3791 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
3792 | { | |
3793 | if (abiversion (ibfd) == 0) | |
3794 | set_abiversion (ibfd, 2); | |
3795 | else if (abiversion (ibfd) == 1) | |
3796 | { | |
cf97bcb0 AM |
3797 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
3798 | " for ABI version 1"), *name); | |
6911b7dc AM |
3799 | bfd_set_error (bfd_error_bad_value); |
3800 | return FALSE; | |
3801 | } | |
3802 | } | |
3803 | ||
555cd476 AM |
3804 | return TRUE; |
3805 | } | |
3806 | ||
6911b7dc AM |
3807 | /* Merge non-visibility st_other attributes: local entry point. */ |
3808 | ||
3809 | static void | |
3810 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
3811 | const Elf_Internal_Sym *isym, | |
3812 | bfd_boolean definition, | |
3813 | bfd_boolean dynamic) | |
3814 | { | |
f378ab09 | 3815 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
3816 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
3817 | | ELF_ST_VISIBILITY (h->other)); | |
3818 | } | |
3819 | ||
8c5b4e52 AM |
3820 | /* Hook called on merging a symbol. We use this to clear "fake" since |
3821 | we now have a real symbol. */ | |
3822 | ||
3823 | static bfd_boolean | |
3824 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 3825 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
3826 | asection **psec ATTRIBUTE_UNUSED, |
3827 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
3828 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
3829 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
3830 | const asection *oldsec ATTRIBUTE_UNUSED) | |
3831 | { | |
3832 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
3833 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
3834 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
3835 | return TRUE; |
3836 | } | |
3837 | ||
8387904d | 3838 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
3839 | inclusion of a new ABI object archive that defines "bar". |
3840 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
3841 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
3842 | |
3843 | static struct elf_link_hash_entry * | |
3844 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
3845 | struct bfd_link_info *info, | |
3846 | const char *name) | |
3847 | { | |
3848 | struct elf_link_hash_entry *h; | |
3849 | char *dot_name; | |
3850 | size_t len; | |
3851 | ||
3852 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
3853 | if (h != NULL |
3854 | /* Don't return this sym if it is a fake function descriptor | |
3855 | created by add_symbol_adjust. */ | |
8c5b4e52 | 3856 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
3857 | return h; |
3858 | ||
3859 | if (name[0] == '.') | |
3860 | return h; | |
3861 | ||
3862 | len = strlen (name); | |
3863 | dot_name = bfd_alloc (abfd, len + 2); | |
3864 | if (dot_name == NULL) | |
e99955cd | 3865 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
3866 | dot_name[0] = '.'; |
3867 | memcpy (dot_name + 1, name, len + 1); | |
3868 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
3869 | bfd_release (abfd, dot_name); | |
3870 | return h; | |
3871 | } | |
3872 | ||
3873 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
3874 | new ABI object defines "bar". Well, at least, undefined dot symbols |
3875 | are made weak. This stops later archive searches from including an | |
3876 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
3877 | prevents the linker complaining about undefined symbols. |
3878 | We also check and correct mismatched symbol visibility here. The | |
3879 | most restrictive visibility of the function descriptor and the | |
3880 | function entry symbol is used. */ | |
8387904d AM |
3881 | |
3882 | static bfd_boolean | |
b3fac117 | 3883 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 3884 | { |
8387904d AM |
3885 | struct ppc_link_hash_table *htab; |
3886 | struct ppc_link_hash_entry *fdh; | |
3887 | ||
b3fac117 AM |
3888 | if (eh->elf.root.type == bfd_link_hash_warning) |
3889 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 3890 | |
8400d40d AM |
3891 | if (eh->elf.root.type == bfd_link_hash_indirect) |
3892 | return TRUE; | |
3893 | ||
b3fac117 AM |
3894 | if (eh->elf.root.root.string[0] != '.') |
3895 | abort (); | |
8387904d | 3896 | |
b3fac117 | 3897 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
3898 | if (htab == NULL) |
3899 | return FALSE; | |
3900 | ||
b31867b6 | 3901 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
3902 | if (fdh == NULL |
3903 | && !bfd_link_relocatable (info) | |
3904 | && (eh->elf.root.type == bfd_link_hash_undefined | |
3905 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
3906 | && eh->elf.ref_regular) | |
3907 | { | |
3908 | /* Make an undefined function descriptor sym, in order to | |
3909 | pull in an --as-needed shared lib. Archives are handled | |
3910 | elsewhere. */ | |
3911 | fdh = make_fdh (info, eh); | |
3912 | if (fdh == NULL) | |
3913 | return FALSE; | |
bb700d78 | 3914 | } |
8c5b4e52 AM |
3915 | |
3916 | if (fdh != NULL) | |
8387904d | 3917 | { |
35b0ce59 AM |
3918 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
3919 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
3920 | |
3921 | /* Make both descriptor and entry symbol have the most | |
3922 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
3923 | if (entry_vis < descr_vis) |
3924 | fdh->elf.other += entry_vis - descr_vis; | |
3925 | else if (entry_vis > descr_vis) | |
3926 | eh->elf.other += descr_vis - entry_vis; | |
3927 | ||
8c5b4e52 AM |
3928 | /* Propagate reference flags from entry symbol to function |
3929 | descriptor symbol. */ | |
bc4e12de | 3930 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 3931 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
3932 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
3933 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
3934 | ||
3935 | if (!fdh->elf.forced_local | |
3936 | && fdh->elf.dynindx == -1 | |
3937 | && fdh->elf.versioned != versioned_hidden | |
3938 | && (bfd_link_dll (info) | |
3939 | || fdh->elf.def_dynamic | |
3940 | || fdh->elf.ref_dynamic) | |
3941 | && (eh->elf.ref_regular | |
3942 | || eh->elf.def_regular)) | |
3943 | { | |
2cdcc330 | 3944 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 3945 | return FALSE; |
35b0ce59 | 3946 | } |
8387904d | 3947 | } |
99877b66 | 3948 | |
8387904d AM |
3949 | return TRUE; |
3950 | } | |
3951 | ||
f6c7c3e8 AM |
3952 | /* Set up opd section info and abiversion for IBFD, and process list |
3953 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 3954 | |
8387904d | 3955 | static bfd_boolean |
f6c7c3e8 | 3956 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 3957 | { |
99877b66 | 3958 | struct ppc_link_hash_table *htab; |
b3fac117 | 3959 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 3960 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 3961 | |
459609d6 | 3962 | if (opd != NULL && opd->size != 0) |
b3fac117 | 3963 | { |
b9399fcf AM |
3964 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
3965 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
3966 | ||
459609d6 AM |
3967 | if (abiversion (ibfd) == 0) |
3968 | set_abiversion (ibfd, 1); | |
8a2058b5 | 3969 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 3970 | { |
695344c0 | 3971 | /* xgettext:c-format */ |
cf97bcb0 AM |
3972 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
3973 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
3974 | bfd_set_error (bfd_error_bad_value); |
3975 | return FALSE; | |
f6c7c3e8 | 3976 | } |
b9399fcf | 3977 | } |
f6c7c3e8 | 3978 | |
b9399fcf AM |
3979 | if (is_ppc64_elf (info->output_bfd)) |
3980 | { | |
3981 | /* For input files without an explicit abiversion in e_flags | |
3982 | we should have flagged any with symbol st_other bits set | |
3983 | as ELFv1 and above flagged those with .opd as ELFv2. | |
3984 | Set the output abiversion if not yet set, and for any input | |
3985 | still ambiguous, take its abiversion from the output. | |
3986 | Differences in ABI are reported later. */ | |
3987 | if (abiversion (info->output_bfd) == 0) | |
3988 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
3989 | else if (abiversion (ibfd) == 0) | |
3990 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
3991 | } |
3992 | ||
459609d6 AM |
3993 | htab = ppc_hash_table (info); |
3994 | if (htab == NULL) | |
b9399fcf | 3995 | return TRUE; |
459609d6 | 3996 | |
b9399fcf AM |
3997 | if (opd != NULL && opd->size != 0 |
3998 | && (ibfd->flags & DYNAMIC) == 0 | |
3999 | && (opd->flags & SEC_RELOC) != 0 | |
4000 | && opd->reloc_count != 0 | |
4001 | && !bfd_is_abs_section (opd->output_section) | |
4002 | && info->gc_sections) | |
4003 | { | |
4004 | /* Garbage collection needs some extra help with .opd sections. | |
4005 | We don't want to necessarily keep everything referenced by | |
4006 | relocs in .opd, as that would keep all functions. Instead, | |
4007 | if we reference an .opd symbol (a function descriptor), we | |
4008 | want to keep the function code symbol's section. This is | |
4009 | easy for global symbols, but for local syms we need to keep | |
4010 | information about the associated function section. */ | |
4011 | bfd_size_type amt; | |
4012 | asection **opd_sym_map; | |
4013 | Elf_Internal_Shdr *symtab_hdr; | |
4014 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4015 | ||
4016 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4017 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4018 | if (opd_sym_map == NULL) | |
4019 | return FALSE; | |
4020 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4021 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4022 | info->keep_memory); | |
4023 | if (relocs == NULL) | |
4024 | return FALSE; | |
4025 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4026 | rel_end = relocs + opd->reloc_count - 1; | |
4027 | for (rel = relocs; rel < rel_end; rel++) | |
4028 | { | |
4029 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4030 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4031 | ||
4032 | if (r_type == R_PPC64_ADDR64 | |
4033 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4034 | && r_symndx < symtab_hdr->sh_info) | |
4035 | { | |
4036 | Elf_Internal_Sym *isym; | |
4037 | asection *s; | |
4038 | ||
4039 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
4040 | if (isym == NULL) | |
4041 | { | |
4042 | if (elf_section_data (opd)->relocs != relocs) | |
4043 | free (relocs); | |
4044 | return FALSE; | |
4045 | } | |
4046 | ||
4047 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4048 | if (s != NULL && s != opd) | |
4049 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4050 | } | |
4051 | } | |
4052 | if (elf_section_data (opd)->relocs != relocs) | |
4053 | free (relocs); | |
4054 | } | |
459609d6 AM |
4055 | |
4056 | p = &htab->dot_syms; | |
4057 | while ((eh = *p) != NULL) | |
4058 | { | |
4059 | *p = NULL; | |
4060 | if (&eh->elf == htab->elf.hgot) | |
4061 | ; | |
4062 | else if (htab->elf.hgot == NULL | |
4063 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4064 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4065 | else if (abiversion (ibfd) <= 1) |
4066 | { | |
4067 | htab->need_func_desc_adj = 1; | |
4068 | if (!add_symbol_adjust (eh, info)) | |
4069 | return FALSE; | |
4070 | } | |
459609d6 AM |
4071 | p = &eh->u.next_dot_sym; |
4072 | } | |
b3fac117 | 4073 | return TRUE; |
8387904d AM |
4074 | } |
4075 | ||
97fed1c9 JJ |
4076 | /* Undo hash table changes when an --as-needed input file is determined |
4077 | not to be needed. */ | |
4078 | ||
4079 | static bfd_boolean | |
e5034e59 AM |
4080 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4081 | struct bfd_link_info *info, | |
4082 | enum notice_asneeded_action act) | |
97fed1c9 | 4083 | { |
e5034e59 AM |
4084 | if (act == notice_not_needed) |
4085 | { | |
4086 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4087 | |
e5034e59 AM |
4088 | if (htab == NULL) |
4089 | return FALSE; | |
4dfe6ac6 | 4090 | |
e5034e59 AM |
4091 | htab->dot_syms = NULL; |
4092 | } | |
4093 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4094 | } |
4095 | ||
aa374f67 AM |
4096 | /* If --just-symbols against a final linked binary, then assume we need |
4097 | toc adjusting stubs when calling functions defined there. */ | |
4098 | ||
4099 | static void | |
4100 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4101 | { | |
4102 | if ((sec->flags & SEC_CODE) != 0 | |
4103 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4104 | && is_ppc64_elf (sec->owner)) | |
4105 | { | |
2c3f079f AM |
4106 | if (abiversion (sec->owner) >= 2 |
4107 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4108 | sec->has_toc_reloc = 1; |
4109 | } | |
4110 | _bfd_elf_link_just_syms (sec, info); | |
4111 | } | |
4112 | ||
e054468f | 4113 | static struct plt_entry ** |
4ce794b7 AM |
4114 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4115 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4116 | { |
4117 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4118 | struct plt_entry **local_plt; |
f961d9dd | 4119 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4120 | |
4121 | if (local_got_ents == NULL) | |
4122 | { | |
4123 | bfd_size_type size = symtab_hdr->sh_info; | |
4124 | ||
e054468f AM |
4125 | size *= (sizeof (*local_got_ents) |
4126 | + sizeof (*local_plt) | |
4127 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4128 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4129 | if (local_got_ents == NULL) |
e054468f | 4130 | return NULL; |
411e1bfb AM |
4131 | elf_local_got_ents (abfd) = local_got_ents; |
4132 | } | |
4133 | ||
37da22e5 | 4134 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4135 | { |
4136 | struct got_entry *ent; | |
4137 | ||
4138 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4139 | if (ent->addend == r_addend |
4140 | && ent->owner == abfd | |
4141 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4142 | break; |
4143 | if (ent == NULL) | |
4144 | { | |
4145 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4146 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4147 | if (ent == NULL) |
4148 | return FALSE; | |
4149 | ent->next = local_got_ents[r_symndx]; | |
4150 | ent->addend = r_addend; | |
e717da7e | 4151 | ent->owner = abfd; |
411e1bfb | 4152 | ent->tls_type = tls_type; |
927be08e | 4153 | ent->is_indirect = FALSE; |
411e1bfb AM |
4154 | ent->got.refcount = 0; |
4155 | local_got_ents[r_symndx] = ent; | |
4156 | } | |
4157 | ent->got.refcount += 1; | |
4158 | } | |
4159 | ||
e054468f | 4160 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4161 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4162 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4163 | |
4164 | return local_plt + r_symndx; | |
65f38f15 AM |
4165 | } |
4166 | ||
411e1bfb | 4167 | static bfd_boolean |
e054468f | 4168 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4169 | { |
411e1bfb | 4170 | struct plt_entry *ent; |
1e2f5b6e | 4171 | |
e054468f | 4172 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4173 | if (ent->addend == addend) |
4174 | break; | |
4175 | if (ent == NULL) | |
1e2f5b6e | 4176 | { |
411e1bfb | 4177 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4178 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4179 | if (ent == NULL) |
4180 | return FALSE; | |
e054468f | 4181 | ent->next = *plist; |
411e1bfb AM |
4182 | ent->addend = addend; |
4183 | ent->plt.refcount = 0; | |
e054468f | 4184 | *plist = ent; |
1e2f5b6e | 4185 | } |
411e1bfb | 4186 | ent->plt.refcount += 1; |
b34976b6 | 4187 | return TRUE; |
1e2f5b6e AM |
4188 | } |
4189 | ||
e054468f AM |
4190 | static bfd_boolean |
4191 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4192 | { | |
4193 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4194 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4195 | || r_type == R_PPC64_REL14 |
4196 | || r_type == R_PPC64_REL14_BRTAKEN | |
4197 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4198 | || r_type == R_PPC64_ADDR24 | |
4199 | || r_type == R_PPC64_ADDR14 | |
4200 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d AM |
4201 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
4202 | || r_type == R_PPC64_PLTCALL); | |
4203 | } | |
4204 | ||
4205 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4206 | ||
4207 | static bfd_boolean | |
4208 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4209 | { | |
4210 | return (r_type == R_PPC64_PLT16_HA | |
4211 | || r_type == R_PPC64_PLT16_HI | |
4212 | || r_type == R_PPC64_PLT16_LO | |
4213 | || r_type == R_PPC64_PLT16_LO_DS | |
4214 | || r_type == R_PPC64_PLTSEQ); | |
e054468f AM |
4215 | } |
4216 | ||
5bd4f169 | 4217 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4218 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4219 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4220 | |
b34976b6 | 4221 | static bfd_boolean |
4ce794b7 AM |
4222 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4223 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4224 | { |
65f38f15 | 4225 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4226 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4227 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4228 | const Elf_Internal_Rela *rel; |
4229 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4230 | asection *sreloc; |
3a71aa26 | 4231 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4232 | bfd_boolean is_opd; |
5bd4f169 | 4233 | |
0e1862bb | 4234 | if (bfd_link_relocatable (info)) |
b34976b6 | 4235 | return TRUE; |
5bd4f169 | 4236 | |
680a3378 AM |
4237 | /* Don't do anything special with non-loaded, non-alloced sections. |
4238 | In particular, any relocs in such sections should not affect GOT | |
4239 | and PLT reference counting (ie. we don't allow them to create GOT | |
4240 | or PLT entries), there's no possibility or desire to optimize TLS | |
4241 | relocs, and there's not much point in propagating relocs to shared | |
4242 | libs that the dynamic linker won't relocate. */ | |
4243 | if ((sec->flags & SEC_ALLOC) == 0) | |
4244 | return TRUE; | |
4245 | ||
0c8d6e5c | 4246 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4247 | |
65f38f15 | 4248 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4249 | if (htab == NULL) |
4250 | return FALSE; | |
4251 | ||
3a71aa26 AM |
4252 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4253 | FALSE, FALSE, TRUE); | |
4254 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4255 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4256 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4257 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4258 | sreloc = NULL; |
b9399fcf | 4259 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4260 | rel_end = relocs + sec->reloc_count; |
4261 | for (rel = relocs; rel < rel_end; rel++) | |
4262 | { | |
4263 | unsigned long r_symndx; | |
4264 | struct elf_link_hash_entry *h; | |
04c9666a | 4265 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4266 | int tls_type; |
7c8fe5c4 | 4267 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4268 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4269 | |
4270 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4271 | if (r_symndx < symtab_hdr->sh_info) | |
4272 | h = NULL; | |
4273 | else | |
973a3492 L |
4274 | { |
4275 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4276 | h = elf_follow_link (h); |
1c865ab2 AM |
4277 | |
4278 | if (h == htab->elf.hgot) | |
4279 | sec->has_toc_reloc = 1; | |
973a3492 | 4280 | } |
5bd4f169 | 4281 | |
727fc41e | 4282 | tls_type = 0; |
e054468f | 4283 | ifunc = NULL; |
25f23106 AM |
4284 | if (h != NULL) |
4285 | { | |
4286 | if (h->type == STT_GNU_IFUNC) | |
4287 | { | |
4288 | h->needs_plt = 1; | |
4289 | ifunc = &h->plt.plist; | |
4290 | } | |
4291 | } | |
4292 | else | |
4293 | { | |
4294 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4295 | abfd, r_symndx); | |
4296 | if (isym == NULL) | |
4297 | return FALSE; | |
4298 | ||
4299 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4300 | { | |
4301 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
37da22e5 AM |
4302 | rel->r_addend, |
4303 | NON_GOT | PLT_IFUNC); | |
25f23106 AM |
4304 | if (ifunc == NULL) |
4305 | return FALSE; | |
4306 | } | |
4307 | } | |
727fc41e | 4308 | |
cbf95972 | 4309 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4310 | switch (r_type) |
5bd4f169 | 4311 | { |
727fc41e AM |
4312 | case R_PPC64_TLSGD: |
4313 | case R_PPC64_TLSLD: | |
4314 | /* These special tls relocs tie a call to __tls_get_addr with | |
4315 | its parameter symbol. */ | |
37da22e5 AM |
4316 | if (h != NULL) |
4317 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
4318 | else | |
4319 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4320 | rel->r_addend, | |
4321 | NON_GOT | TLS_TLS | TLS_MARK)) | |
4322 | return FALSE; | |
4323 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4324 | break; |
4325 | ||
411e1bfb AM |
4326 | case R_PPC64_GOT_TLSLD16: |
4327 | case R_PPC64_GOT_TLSLD16_LO: | |
4328 | case R_PPC64_GOT_TLSLD16_HI: | |
4329 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4330 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4331 | goto dogottls; |
4332 | ||
4333 | case R_PPC64_GOT_TLSGD16: | |
4334 | case R_PPC64_GOT_TLSGD16_LO: | |
4335 | case R_PPC64_GOT_TLSGD16_HI: | |
4336 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4337 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4338 | goto dogottls; |
4339 | ||
4340 | case R_PPC64_GOT_TPREL16_DS: | |
4341 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4342 | case R_PPC64_GOT_TPREL16_HI: | |
4343 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 4344 | if (bfd_link_dll (info)) |
411e1bfb AM |
4345 | info->flags |= DF_STATIC_TLS; |
4346 | tls_type = TLS_TLS | TLS_TPREL; | |
4347 | goto dogottls; | |
4348 | ||
4349 | case R_PPC64_GOT_DTPREL16_DS: | |
4350 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4351 | case R_PPC64_GOT_DTPREL16_HI: | |
4352 | case R_PPC64_GOT_DTPREL16_HA: | |
4353 | tls_type = TLS_TLS | TLS_DTPREL; | |
4354 | dogottls: | |
4355 | sec->has_tls_reloc = 1; | |
1a0670f3 | 4356 | /* Fall through */ |
411e1bfb | 4357 | |
5bd4f169 | 4358 | case R_PPC64_GOT16: |
5bd4f169 | 4359 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4360 | case R_PPC64_GOT16_HA: |
4361 | case R_PPC64_GOT16_HI: | |
4362 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4363 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4364 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4365 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4366 | if (r_type == R_PPC64_GOT_TLSLD16 |
4367 | || r_type == R_PPC64_GOT_TLSGD16 | |
4368 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4369 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4370 | || r_type == R_PPC64_GOT16 | |
4371 | || r_type == R_PPC64_GOT16_DS) | |
4372 | { | |
4373 | htab->do_multi_toc = 1; | |
d77c8a4b | 4374 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4375 | } |
4376 | ||
e717da7e AM |
4377 | if (ppc64_elf_tdata (abfd)->got == NULL |
4378 | && !create_got_section (abfd, info)) | |
b34976b6 | 4379 | return FALSE; |
5bd4f169 AM |
4380 | |
4381 | if (h != NULL) | |
4382 | { | |
411e1bfb AM |
4383 | struct ppc_link_hash_entry *eh; |
4384 | struct got_entry *ent; | |
65f38f15 | 4385 | |
411e1bfb AM |
4386 | eh = (struct ppc_link_hash_entry *) h; |
4387 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4388 | if (ent->addend == rel->r_addend | |
e717da7e | 4389 | && ent->owner == abfd |
411e1bfb AM |
4390 | && ent->tls_type == tls_type) |
4391 | break; | |
4392 | if (ent == NULL) | |
5bd4f169 | 4393 | { |
411e1bfb | 4394 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4395 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4396 | if (ent == NULL) |
b34976b6 | 4397 | return FALSE; |
411e1bfb AM |
4398 | ent->next = eh->elf.got.glist; |
4399 | ent->addend = rel->r_addend; | |
e717da7e | 4400 | ent->owner = abfd; |
411e1bfb | 4401 | ent->tls_type = tls_type; |
927be08e | 4402 | ent->is_indirect = FALSE; |
411e1bfb AM |
4403 | ent->got.refcount = 0; |
4404 | eh->elf.got.glist = ent; | |
5bd4f169 | 4405 | } |
411e1bfb | 4406 | ent->got.refcount += 1; |
e7b938ca | 4407 | eh->tls_mask |= tls_type; |
5bd4f169 | 4408 | } |
411e1bfb AM |
4409 | else |
4410 | /* This is a global offset table entry for a local symbol. */ | |
4411 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4412 | rel->r_addend, tls_type)) | |
4413 | return FALSE; | |
a345bc8d AM |
4414 | |
4415 | /* We may also need a plt entry if the symbol turns out to be | |
4416 | an ifunc. */ | |
0e1862bb | 4417 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
4418 | { |
4419 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
4420 | return FALSE; | |
4421 | } | |
5bd4f169 AM |
4422 | break; |
4423 | ||
5bd4f169 | 4424 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4425 | case R_PPC64_PLT16_HI: |
4426 | case R_PPC64_PLT16_LO: | |
08be3224 | 4427 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
4428 | case R_PPC64_PLT32: |
4429 | case R_PPC64_PLT64: | |
cbf95972 AM |
4430 | /* This symbol requires a procedure linkage table entry. */ |
4431 | plt_list = ifunc; | |
4432 | if (h != NULL) | |
e054468f | 4433 | { |
e054468f AM |
4434 | h->needs_plt = 1; |
4435 | if (h->root.root.string[0] == '.' | |
4436 | && h->root.root.string[1] != '\0') | |
4437 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 4438 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
4439 | plt_list = &h->plt.plist; |
4440 | } | |
4441 | if (plt_list == NULL) | |
2d7ad24e AM |
4442 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
4443 | rel->r_addend, | |
4444 | NON_GOT | PLT_KEEP); | |
cbf95972 AM |
4445 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
4446 | return FALSE; | |
5bd4f169 AM |
4447 | break; |
4448 | ||
4449 | /* The following relocations don't need to propagate the | |
4450 | relocation if linking a shared object since they are | |
4451 | section relative. */ | |
4452 | case R_PPC64_SECTOFF: | |
4453 | case R_PPC64_SECTOFF_LO: | |
4454 | case R_PPC64_SECTOFF_HI: | |
4455 | case R_PPC64_SECTOFF_HA: | |
4456 | case R_PPC64_SECTOFF_DS: | |
4457 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4458 | case R_PPC64_DTPREL16: |
4459 | case R_PPC64_DTPREL16_LO: | |
4460 | case R_PPC64_DTPREL16_HI: | |
4461 | case R_PPC64_DTPREL16_HA: | |
4462 | case R_PPC64_DTPREL16_DS: | |
4463 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4464 | case R_PPC64_DTPREL16_HIGH: |
4465 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4466 | case R_PPC64_DTPREL16_HIGHER: |
4467 | case R_PPC64_DTPREL16_HIGHERA: | |
4468 | case R_PPC64_DTPREL16_HIGHEST: | |
4469 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4470 | break; |
4471 | ||
ad8e1ba5 | 4472 | /* Nor do these. */ |
25f23106 AM |
4473 | case R_PPC64_REL16: |
4474 | case R_PPC64_REL16_LO: | |
4475 | case R_PPC64_REL16_HI: | |
4476 | case R_PPC64_REL16_HA: | |
a680de9a | 4477 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4478 | break; |
4479 | ||
45965137 AM |
4480 | /* Not supported as a dynamic relocation. */ |
4481 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4482 | if (bfd_link_pic (info)) |
45965137 AM |
4483 | { |
4484 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4485 | ppc_howto_init (); | |
695344c0 | 4486 | /* xgettext:c-format */ |
174d0a74 | 4487 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4488 | "in shared libraries and PIEs\n"), |
45965137 AM |
4489 | abfd, sec, rel->r_offset, |
4490 | ppc64_elf_howto_table[r_type]->name); | |
4491 | bfd_set_error (bfd_error_bad_value); | |
4492 | return FALSE; | |
4493 | } | |
4494 | break; | |
4495 | ||
ad8e1ba5 | 4496 | case R_PPC64_TOC16: |
33c0ec9d AM |
4497 | case R_PPC64_TOC16_DS: |
4498 | htab->do_multi_toc = 1; | |
d77c8a4b | 4499 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4500 | /* Fall through. */ |
ad8e1ba5 AM |
4501 | case R_PPC64_TOC16_LO: |
4502 | case R_PPC64_TOC16_HI: | |
4503 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4504 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4505 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4506 | break; |
4507 | ||
006589cf AM |
4508 | /* Marker reloc. */ |
4509 | case R_PPC64_ENTRY: | |
4510 | break; | |
4511 | ||
5bd4f169 AM |
4512 | /* This relocation describes the C++ object vtable hierarchy. |
4513 | Reconstruct it for later use during GC. */ | |
4514 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4515 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4516 | return FALSE; |
5bd4f169 AM |
4517 | break; |
4518 | ||
4519 | /* This relocation describes which C++ vtable entries are actually | |
4520 | used. Record for later use during GC. */ | |
4521 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
4522 | BFD_ASSERT (h != NULL); |
4523 | if (h != NULL | |
4524 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 4525 | return FALSE; |
5bd4f169 AM |
4526 | break; |
4527 | ||
721956f4 AM |
4528 | case R_PPC64_REL14: |
4529 | case R_PPC64_REL14_BRTAKEN: | |
4530 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4531 | { |
4532 | asection *dest = NULL; | |
4533 | ||
4534 | /* Heuristic: If jumping outside our section, chances are | |
4535 | we are going to need a stub. */ | |
4536 | if (h != NULL) | |
4537 | { | |
4538 | /* If the sym is weak it may be overridden later, so | |
4539 | don't assume we know where a weak sym lives. */ | |
4540 | if (h->root.type == bfd_link_hash_defined) | |
4541 | dest = h->root.u.def.section; | |
4542 | } | |
4543 | else | |
87d72d41 AM |
4544 | { |
4545 | Elf_Internal_Sym *isym; | |
4546 | ||
4547 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4548 | abfd, r_symndx); | |
4549 | if (isym == NULL) | |
4550 | return FALSE; | |
4551 | ||
4552 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4553 | } | |
4554 | ||
220c76dd | 4555 | if (dest != sec) |
7c8fe5c4 | 4556 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4557 | } |
3e04d765 AM |
4558 | goto rel24; |
4559 | ||
4560 | case R_PPC64_PLTCALL: | |
4561 | ppc64_elf_section_data (sec)->has_pltcall = 1; | |
721956f4 AM |
4562 | /* Fall through. */ |
4563 | ||
5d1634d7 | 4564 | case R_PPC64_REL24: |
05d0e962 | 4565 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4566 | rel24: |
cbf95972 AM |
4567 | plt_list = ifunc; |
4568 | if (h != NULL) | |
5d1634d7 | 4569 | { |
e054468f AM |
4570 | h->needs_plt = 1; |
4571 | if (h->root.root.string[0] == '.' | |
4572 | && h->root.root.string[1] != '\0') | |
4573 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 4574 | |
3a71aa26 | 4575 | if (h == tga || h == dottga) |
cbf95972 AM |
4576 | { |
4577 | sec->has_tls_reloc = 1; | |
4578 | if (rel != relocs | |
4579 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4580 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4581 | /* We have a new-style __tls_get_addr call with | |
4582 | a marker reloc. */ | |
4583 | ; | |
4584 | else | |
4585 | /* Mark this section as having an old-style call. */ | |
4586 | sec->has_tls_get_addr_call = 1; | |
4587 | } | |
4588 | plt_list = &h->plt.plist; | |
411e1bfb | 4589 | } |
cbf95972 AM |
4590 | |
4591 | /* We may need a .plt entry if the function this reloc | |
4592 | refers to is in a shared lib. */ | |
4593 | if (plt_list | |
4594 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
4595 | return FALSE; | |
411e1bfb AM |
4596 | break; |
4597 | ||
cbf95972 AM |
4598 | case R_PPC64_ADDR14: |
4599 | case R_PPC64_ADDR14_BRNTAKEN: | |
4600 | case R_PPC64_ADDR14_BRTAKEN: | |
4601 | case R_PPC64_ADDR24: | |
4602 | goto dodyn; | |
4603 | ||
411e1bfb AM |
4604 | case R_PPC64_TPREL64: |
4605 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 4606 | if (bfd_link_dll (info)) |
411e1bfb AM |
4607 | info->flags |= DF_STATIC_TLS; |
4608 | goto dotlstoc; | |
4609 | ||
4610 | case R_PPC64_DTPMOD64: | |
4611 | if (rel + 1 < rel_end | |
4612 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4613 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4614 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4615 | else |
951fd09b | 4616 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4617 | goto dotlstoc; |
4618 | ||
4619 | case R_PPC64_DTPREL64: | |
4620 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4621 | if (rel != relocs | |
4622 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4623 | && rel[-1].r_offset == rel->r_offset - 8) | |
4624 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4625 | Don't mark with TLS_DTPREL. */ | |
4626 | goto dodyn; | |
4627 | ||
4628 | dotlstoc: | |
4629 | sec->has_tls_reloc = 1; | |
4630 | if (h != NULL) | |
4631 | { | |
4632 | struct ppc_link_hash_entry *eh; | |
4633 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4634 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4635 | } |
4636 | else | |
4637 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4638 | rel->r_addend, tls_type)) | |
4639 | return FALSE; | |
4640 | ||
7c8fe5c4 AM |
4641 | ppc64_sec = ppc64_elf_section_data (sec); |
4642 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4643 | { |
3a71aa26 AM |
4644 | bfd_size_type amt; |
4645 | ||
e7b938ca | 4646 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
4647 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
4648 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
4649 | if (ppc64_sec->u.toc.symndx == NULL) | |
4650 | return FALSE; | |
4651 | amt = sec->size * sizeof (bfd_vma) / 8; | |
4652 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
4653 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 4654 | return FALSE; |
7c8fe5c4 AM |
4655 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4656 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4657 | } |
4658 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
4659 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
4660 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
4661 | |
4662 | /* Mark the second slot of a GD or LD entry. | |
4663 | -1 to indicate GD and -2 to indicate LD. */ | |
4664 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 4665 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4666 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 4667 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4668 | goto dodyn; |
4669 | ||
4670 | case R_PPC64_TPREL16: | |
4671 | case R_PPC64_TPREL16_LO: | |
4672 | case R_PPC64_TPREL16_HI: | |
4673 | case R_PPC64_TPREL16_HA: | |
4674 | case R_PPC64_TPREL16_DS: | |
4675 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
4676 | case R_PPC64_TPREL16_HIGH: |
4677 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
4678 | case R_PPC64_TPREL16_HIGHER: |
4679 | case R_PPC64_TPREL16_HIGHERA: | |
4680 | case R_PPC64_TPREL16_HIGHEST: | |
4681 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
4682 | if (bfd_link_dll (info)) |
4683 | info->flags |= DF_STATIC_TLS; | |
4684 | goto dodyn; | |
5d1634d7 | 4685 | |
e86ce104 | 4686 | case R_PPC64_ADDR64: |
b9399fcf | 4687 | if (is_opd |
1e2f5b6e | 4688 | && rel + 1 < rel_end |
4ce794b7 | 4689 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4690 | { |
8387904d | 4691 | if (h != NULL) |
8c5b4e52 | 4692 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 4693 | } |
e86ce104 AM |
4694 | /* Fall through. */ |
4695 | ||
65f38f15 AM |
4696 | case R_PPC64_ADDR16: |
4697 | case R_PPC64_ADDR16_DS: | |
4698 | case R_PPC64_ADDR16_HA: | |
4699 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
4700 | case R_PPC64_ADDR16_HIGH: |
4701 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
4702 | case R_PPC64_ADDR16_HIGHER: |
4703 | case R_PPC64_ADDR16_HIGHERA: | |
4704 | case R_PPC64_ADDR16_HIGHEST: | |
4705 | case R_PPC64_ADDR16_HIGHESTA: | |
4706 | case R_PPC64_ADDR16_LO: | |
4707 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 4708 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
4709 | && rel->r_addend == 0) |
4710 | { | |
4711 | /* We may need a .plt entry if this reloc refers to a | |
4712 | function in a shared lib. */ | |
4713 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
4714 | return FALSE; | |
4715 | h->pointer_equality_needed = 1; | |
4716 | } | |
4717 | /* Fall through. */ | |
4718 | ||
4719 | case R_PPC64_REL30: | |
4720 | case R_PPC64_REL32: | |
4721 | case R_PPC64_REL64: | |
65f38f15 | 4722 | case R_PPC64_ADDR32: |
65f38f15 AM |
4723 | case R_PPC64_UADDR16: |
4724 | case R_PPC64_UADDR32: | |
4725 | case R_PPC64_UADDR64: | |
5bd4f169 | 4726 | case R_PPC64_TOC: |
0e1862bb | 4727 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 4728 | /* We may need a copy reloc. */ |
f5385ebf | 4729 | h->non_got_ref = 1; |
81848ca0 | 4730 | |
41bd81ab | 4731 | /* Don't propagate .opd relocs. */ |
b9399fcf | 4732 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 4733 | break; |
e86ce104 | 4734 | |
65f38f15 AM |
4735 | /* If we are creating a shared library, and this is a reloc |
4736 | against a global symbol, or a non PC relative reloc | |
4737 | against a local symbol, then we need to copy the reloc | |
4738 | into the shared library. However, if we are linking with | |
4739 | -Bsymbolic, we do not need to copy a reloc against a | |
4740 | global symbol which is defined in an object we are | |
4741 | including in the link (i.e., DEF_REGULAR is set). At | |
4742 | this point we have not seen all the input files, so it is | |
4743 | possible that DEF_REGULAR is not set now but will be set | |
4744 | later (it is never cleared). In case of a weak definition, | |
4745 | DEF_REGULAR may be cleared later by a strong definition in | |
4746 | a shared library. We account for that possibility below by | |
f4656909 | 4747 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4748 | table entry. A similar situation occurs when creating |
4749 | shared libraries and symbol visibility changes render the | |
4750 | symbol local. | |
4751 | ||
4752 | If on the other hand, we are creating an executable, we | |
4753 | may need to keep relocations for symbols satisfied by a | |
4754 | dynamic library if we manage to avoid copy relocs for the | |
4755 | symbol. */ | |
411e1bfb | 4756 | dodyn: |
0e1862bb | 4757 | if ((bfd_link_pic (info) |
1d483afe | 4758 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 4759 | || (h != NULL |
198f1157 | 4760 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 4761 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 4762 | || !h->def_regular)))) |
f4656909 | 4763 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 4764 | && !bfd_link_pic (info) |
65f38f15 AM |
4765 | && h != NULL |
4766 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 4767 | || !h->def_regular)) |
0e1862bb | 4768 | || (!bfd_link_pic (info) |
25f23106 | 4769 | && ifunc != NULL)) |
5bd4f169 | 4770 | { |
65f38f15 AM |
4771 | /* We must copy these reloc types into the output file. |
4772 | Create a reloc section in dynobj and make room for | |
4773 | this reloc. */ | |
5bd4f169 AM |
4774 | if (sreloc == NULL) |
4775 | { | |
83bac4b0 NC |
4776 | sreloc = _bfd_elf_make_dynamic_reloc_section |
4777 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 4778 | |
5bd4f169 | 4779 | if (sreloc == NULL) |
83bac4b0 | 4780 | return FALSE; |
5bd4f169 AM |
4781 | } |
4782 | ||
65f38f15 AM |
4783 | /* If this is a global symbol, we count the number of |
4784 | relocations we need for this symbol. */ | |
4785 | if (h != NULL) | |
4786 | { | |
19e08130 AM |
4787 | struct elf_dyn_relocs *p; |
4788 | struct elf_dyn_relocs **head; | |
4789 | ||
ec338859 | 4790 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
4791 | p = *head; |
4792 | if (p == NULL || p->sec != sec) | |
4793 | { | |
4794 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4795 | if (p == NULL) | |
4796 | return FALSE; | |
4797 | p->next = *head; | |
4798 | *head = p; | |
4799 | p->sec = sec; | |
4800 | p->count = 0; | |
4801 | p->pc_count = 0; | |
4802 | } | |
4803 | p->count += 1; | |
4804 | if (!must_be_dyn_reloc (info, r_type)) | |
4805 | p->pc_count += 1; | |
65f38f15 AM |
4806 | } |
4807 | else | |
4808 | { | |
ec338859 AM |
4809 | /* Track dynamic relocs needed for local syms too. |
4810 | We really need local syms available to do this | |
4811 | easily. Oh well. */ | |
19e08130 AM |
4812 | struct ppc_dyn_relocs *p; |
4813 | struct ppc_dyn_relocs **head; | |
4814 | bfd_boolean is_ifunc; | |
ec338859 | 4815 | asection *s; |
6edfbbad | 4816 | void *vpp; |
87d72d41 | 4817 | Elf_Internal_Sym *isym; |
6edfbbad | 4818 | |
87d72d41 AM |
4819 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4820 | abfd, r_symndx); | |
4821 | if (isym == NULL) | |
b34976b6 | 4822 | return FALSE; |
ec338859 | 4823 | |
87d72d41 AM |
4824 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4825 | if (s == NULL) | |
4826 | s = sec; | |
4827 | ||
6edfbbad | 4828 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
4829 | head = (struct ppc_dyn_relocs **) vpp; |
4830 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
4831 | p = *head; | |
4832 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
4833 | p = p->next; | |
4834 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
4835 | { | |
4836 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4837 | if (p == NULL) | |
4838 | return FALSE; | |
4839 | p->next = *head; | |
4840 | *head = p; | |
4841 | p->sec = sec; | |
4842 | p->ifunc = is_ifunc; | |
4843 | p->count = 0; | |
4844 | } | |
4845 | p->count += 1; | |
ec338859 | 4846 | } |
65f38f15 | 4847 | } |
5bd4f169 | 4848 | break; |
65f38f15 AM |
4849 | |
4850 | default: | |
96e0dda4 | 4851 | break; |
5bd4f169 AM |
4852 | } |
4853 | } | |
4854 | ||
b34976b6 | 4855 | return TRUE; |
5bd4f169 AM |
4856 | } |
4857 | ||
ee67d69a AM |
4858 | /* Merge backend specific data from an object file to the output |
4859 | object file when linking. */ | |
4860 | ||
4861 | static bfd_boolean | |
50e03d47 | 4862 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 4863 | { |
50e03d47 | 4864 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
4865 | unsigned long iflags, oflags; |
4866 | ||
4867 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
4868 | return TRUE; | |
4869 | ||
4870 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
4871 | return TRUE; | |
4872 | ||
50e03d47 | 4873 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
4874 | return FALSE; |
4875 | ||
4876 | iflags = elf_elfheader (ibfd)->e_flags; | |
4877 | oflags = elf_elfheader (obfd)->e_flags; | |
4878 | ||
f6c7c3e8 | 4879 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 4880 | { |
4eca0228 | 4881 | _bfd_error_handler |
695344c0 | 4882 | /* xgettext:c-format */ |
871b3ab2 | 4883 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
4884 | bfd_set_error (bfd_error_bad_value); |
4885 | return FALSE; | |
4886 | } | |
f6c7c3e8 | 4887 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 4888 | { |
4eca0228 | 4889 | _bfd_error_handler |
695344c0 | 4890 | /* xgettext:c-format */ |
871b3ab2 | 4891 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
4892 | ibfd, iflags, oflags); |
4893 | bfd_set_error (bfd_error_bad_value); | |
4894 | return FALSE; | |
4895 | } | |
4896 | ||
4a91d0ba AM |
4897 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
4898 | return FALSE; | |
005d79fd | 4899 | |
ee67d69a | 4900 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 4901 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
4902 | } |
4903 | ||
4904 | static bfd_boolean | |
4905 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
4906 | { | |
4907 | /* Print normal ELF private data. */ | |
4908 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4909 | ||
4910 | if (elf_elfheader (abfd)->e_flags != 0) | |
4911 | { | |
4912 | FILE *file = ptr; | |
4913 | ||
ee67d69a AM |
4914 | fprintf (file, _("private flags = 0x%lx:"), |
4915 | elf_elfheader (abfd)->e_flags); | |
4916 | ||
4917 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
4918 | fprintf (file, _(" [abiv%ld]"), | |
4919 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
4920 | fputc ('\n', file); | |
4921 | } | |
4922 | ||
4923 | return TRUE; | |
4924 | } | |
4925 | ||
8387904d | 4926 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
4927 | of the code entry point, and its section, which must be in the same |
4928 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
4929 | |
4930 | static bfd_vma | |
4931 | opd_entry_value (asection *opd_sec, | |
4932 | bfd_vma offset, | |
4933 | asection **code_sec, | |
aef36ac1 AM |
4934 | bfd_vma *code_off, |
4935 | bfd_boolean in_code_sec) | |
8387904d AM |
4936 | { |
4937 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4938 | Elf_Internal_Rela *relocs; |
8387904d | 4939 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4940 | bfd_vma val; |
8387904d | 4941 | |
9f296da3 AM |
4942 | /* No relocs implies we are linking a --just-symbols object, or looking |
4943 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
4944 | if (opd_sec->reloc_count == 0) |
4945 | { | |
729eabd5 | 4946 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 4947 | |
729eabd5 AM |
4948 | if (contents == NULL) |
4949 | { | |
4950 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
4951 | return (bfd_vma) -1; | |
4952 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
4953 | } | |
ee1e4ede | 4954 | |
dbb3fbbb | 4955 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 4956 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
4957 | return (bfd_vma) -1; |
4958 | ||
729eabd5 | 4959 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
4960 | if (code_sec != NULL) |
4961 | { | |
4962 | asection *sec, *likely = NULL; | |
ee1e4ede | 4963 | |
aef36ac1 | 4964 | if (in_code_sec) |
4b85d634 | 4965 | { |
aef36ac1 AM |
4966 | sec = *code_sec; |
4967 | if (sec->vma <= val | |
4968 | && val < sec->vma + sec->size) | |
4969 | likely = sec; | |
4970 | else | |
4971 | val = -1; | |
4972 | } | |
4973 | else | |
4974 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4975 | if (sec->vma <= val | |
4976 | && (sec->flags & SEC_LOAD) != 0 | |
4977 | && (sec->flags & SEC_ALLOC) != 0) | |
4978 | likely = sec; | |
4979 | if (likely != NULL) | |
4980 | { | |
4981 | *code_sec = likely; | |
4982 | if (code_off != NULL) | |
4983 | *code_off = val - likely->vma; | |
4b85d634 AM |
4984 | } |
4985 | } | |
aef36ac1 | 4986 | return val; |
4b85d634 AM |
4987 | } |
4988 | ||
0c8d6e5c | 4989 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 4990 | |
729eabd5 | 4991 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
4992 | if (relocs == NULL) |
4993 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
4994 | /* PR 17512: file: df8e1fd6. */ |
4995 | if (relocs == NULL) | |
4996 | return (bfd_vma) -1; | |
645ea6a9 | 4997 | |
8387904d | 4998 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4999 | lo = relocs; |
8387904d | 5000 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5001 | val = (bfd_vma) -1; |
8387904d AM |
5002 | while (lo < hi) |
5003 | { | |
5004 | look = lo + (hi - lo) / 2; | |
5005 | if (look->r_offset < offset) | |
5006 | lo = look + 1; | |
5007 | else if (look->r_offset > offset) | |
5008 | hi = look; | |
5009 | else | |
5010 | { | |
0ffa91dd NC |
5011 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5012 | ||
8387904d AM |
5013 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5014 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5015 | { | |
5016 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5017 | asection *sec = NULL; |
8387904d | 5018 | |
b53dfeb2 AM |
5019 | if (symndx >= symtab_hdr->sh_info |
5020 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5021 | { |
5022 | struct elf_link_hash_entry **sym_hashes; | |
5023 | struct elf_link_hash_entry *rh; | |
5024 | ||
5025 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5026 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5027 | if (rh != NULL) |
5028 | { | |
5029 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5030 | if (rh->root.type != bfd_link_hash_defined |
5031 | && rh->root.type != bfd_link_hash_defweak) | |
5032 | break; | |
5033 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5034 | { |
bb854a36 AM |
5035 | val = rh->root.u.def.value; |
5036 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5037 | } |
5038 | } | |
5039 | } | |
5040 | ||
5041 | if (sec == NULL) | |
5042 | { | |
5043 | Elf_Internal_Sym *sym; | |
5044 | ||
5045 | if (symndx < symtab_hdr->sh_info) | |
5046 | { | |
5047 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5048 | if (sym == NULL) | |
5049 | { | |
5050 | size_t symcnt = symtab_hdr->sh_info; | |
5051 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5052 | symcnt, 0, | |
5053 | NULL, NULL, NULL); | |
5054 | if (sym == NULL) | |
5055 | break; | |
5056 | symtab_hdr->contents = (bfd_byte *) sym; | |
5057 | } | |
5058 | sym += symndx; | |
128205bb AM |
5059 | } |
5060 | else | |
5061 | { | |
b53dfeb2 AM |
5062 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5063 | 1, symndx, | |
5064 | NULL, NULL, NULL); | |
128205bb AM |
5065 | if (sym == NULL) |
5066 | break; | |
128205bb | 5067 | } |
b53dfeb2 AM |
5068 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5069 | if (sec == NULL) | |
5070 | break; | |
5071 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5072 | val = sym->st_value; | |
8387904d | 5073 | } |
b53dfeb2 | 5074 | |
8387904d AM |
5075 | val += look->r_addend; |
5076 | if (code_off != NULL) | |
5077 | *code_off = val; | |
5078 | if (code_sec != NULL) | |
aef36ac1 AM |
5079 | { |
5080 | if (in_code_sec && *code_sec != sec) | |
5081 | return -1; | |
5082 | else | |
5083 | *code_sec = sec; | |
5084 | } | |
b53dfeb2 | 5085 | if (sec->output_section != NULL) |
8387904d | 5086 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5087 | } |
5088 | break; | |
5089 | } | |
5090 | } | |
645ea6a9 | 5091 | |
645ea6a9 | 5092 | return val; |
8387904d AM |
5093 | } |
5094 | ||
aef36ac1 AM |
5095 | /* If the ELF symbol SYM might be a function in SEC, return the |
5096 | function size and set *CODE_OFF to the function's entry point, | |
5097 | otherwise return zero. */ | |
9f296da3 | 5098 | |
aef36ac1 AM |
5099 | static bfd_size_type |
5100 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5101 | bfd_vma *code_off) | |
9f296da3 | 5102 | { |
aef36ac1 AM |
5103 | bfd_size_type size; |
5104 | ||
5105 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5106 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5107 | return 0; | |
5108 | ||
5109 | size = 0; | |
5110 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5111 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5112 | ||
5113 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5114 | { |
b07bca4e AM |
5115 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5116 | bfd_vma symval = sym->value; | |
5117 | ||
5118 | if (opd != NULL | |
5119 | && opd->adjust != NULL | |
5120 | && elf_section_data (sym->section)->relocs != NULL) | |
5121 | { | |
5122 | /* opd_entry_value will use cached relocs that have been | |
5123 | adjusted, but with raw symbols. That means both local | |
5124 | and global symbols need adjusting. */ | |
5125 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5126 | if (adjust == -1) | |
5127 | return 0; | |
5128 | symval += adjust; | |
5129 | } | |
5130 | ||
5131 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5132 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5133 | return 0; | |
5134 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5135 | symbol. This size has nothing to do with the code size of the | |
5136 | function, which is what we're supposed to return, but the | |
5137 | code size isn't available without looking up the dot-sym. | |
5138 | However, doing that would be a waste of time particularly | |
5139 | since elf_find_function will look at the dot-sym anyway. | |
5140 | Now, elf_find_function will keep the largest size of any | |
5141 | function sym found at the code address of interest, so return | |
5142 | 1 here to avoid it incorrectly caching a larger function size | |
5143 | for a small function. This does mean we return the wrong | |
5144 | size for a new-ABI function of size 24, but all that does is | |
5145 | disable caching for such functions. */ | |
5146 | if (size == 24) | |
5147 | size = 1; | |
9f296da3 | 5148 | } |
aef36ac1 AM |
5149 | else |
5150 | { | |
5151 | if (sym->section != sec) | |
5152 | return 0; | |
5153 | *code_off = sym->value; | |
5154 | } | |
5155 | if (size == 0) | |
5156 | size = 1; | |
5157 | return size; | |
9f296da3 AM |
5158 | } |
5159 | ||
f378ab09 AM |
5160 | /* Return true if symbol is a strong function defined in an ELFv2 |
5161 | object with st_other localentry bits of zero, ie. its local entry | |
5162 | point coincides with its global entry point. */ | |
5163 | ||
5164 | static bfd_boolean | |
5165 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5166 | { | |
5167 | return (h != NULL | |
5168 | && h->type == STT_FUNC | |
5169 | && h->root.type == bfd_link_hash_defined | |
5170 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 5171 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
5172 | && is_ppc64_elf (h->root.u.def.section->owner) |
5173 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5174 | } | |
5175 | ||
854b41e7 AM |
5176 | /* Return true if symbol is defined in a regular object file. */ |
5177 | ||
5178 | static bfd_boolean | |
5179 | is_static_defined (struct elf_link_hash_entry *h) | |
5180 | { | |
5181 | return ((h->root.type == bfd_link_hash_defined | |
5182 | || h->root.type == bfd_link_hash_defweak) | |
5183 | && h->root.u.def.section != NULL | |
5184 | && h->root.u.def.section->output_section != NULL); | |
5185 | } | |
5186 | ||
b31867b6 AM |
5187 | /* If FDH is a function descriptor symbol, return the associated code |
5188 | entry symbol if it is defined. Return NULL otherwise. */ | |
5189 | ||
5190 | static struct ppc_link_hash_entry * | |
5191 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5192 | { | |
5193 | if (fdh->is_func_descriptor) | |
5194 | { | |
5195 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5196 | if (fh->elf.root.type == bfd_link_hash_defined | |
5197 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5198 | return fh; | |
5199 | } | |
5200 | return NULL; | |
5201 | } | |
5202 | ||
5203 | /* If FH is a function code entry symbol, return the associated | |
5204 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5205 | ||
5206 | static struct ppc_link_hash_entry * | |
5207 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5208 | { | |
5209 | if (fh->oh != NULL | |
5210 | && fh->oh->is_func_descriptor) | |
5211 | { | |
5212 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5213 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5214 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5215 | return fdh; | |
5216 | } | |
5217 | return NULL; | |
5218 | } | |
5219 | ||
8c5b4e52 AM |
5220 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5221 | ||
5222 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5223 | ||
5224 | static bfd_boolean | |
5225 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5226 | { | |
5227 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5228 | ||
5229 | if (htab != NULL && htab->need_func_desc_adj) | |
5230 | { | |
5231 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5232 | htab->need_func_desc_adj = 0; | |
5233 | } | |
5234 | return bfd_elf_gc_sections (abfd, info); | |
5235 | } | |
5236 | ||
74f0fb50 AM |
5237 | /* Mark all our entry sym sections, both opd and code section. */ |
5238 | ||
5239 | static void | |
5240 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5241 | { | |
5242 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5243 | struct bfd_sym_chain *sym; | |
5244 | ||
4dfe6ac6 NC |
5245 | if (htab == NULL) |
5246 | return; | |
5247 | ||
74f0fb50 AM |
5248 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5249 | { | |
b31867b6 | 5250 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5251 | asection *sec; |
5252 | ||
5253 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5254 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5255 | if (eh == NULL) |
5256 | continue; | |
5257 | if (eh->elf.root.type != bfd_link_hash_defined | |
5258 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5259 | continue; | |
5260 | ||
b31867b6 AM |
5261 | fh = defined_code_entry (eh); |
5262 | if (fh != NULL) | |
74f0fb50 | 5263 | { |
b31867b6 | 5264 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5265 | sec->flags |= SEC_KEEP; |
5266 | } | |
5267 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5268 | && opd_entry_value (eh->elf.root.u.def.section, | |
5269 | eh->elf.root.u.def.value, | |
aef36ac1 | 5270 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5271 | sec->flags |= SEC_KEEP; |
5272 | ||
5273 | sec = eh->elf.root.u.def.section; | |
5274 | sec->flags |= SEC_KEEP; | |
5275 | } | |
5276 | } | |
5277 | ||
64d03ab5 AM |
5278 | /* Mark sections containing dynamically referenced symbols. When |
5279 | building shared libraries, we must assume that any visible symbol is | |
5280 | referenced. */ | |
5281 | ||
5282 | static bfd_boolean | |
5283 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5284 | { | |
5285 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5286 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5287 | struct ppc_link_hash_entry *fdh; |
b407645f | 5288 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5289 | |
64d03ab5 | 5290 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5291 | fdh = defined_func_desc (eh); |
5292 | if (fdh != NULL) | |
5293 | eh = fdh; | |
64d03ab5 AM |
5294 | |
5295 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5296 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5297 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5298 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5299 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5300 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5301 | && (!bfd_link_executable (info) |
e278ae05 | 5302 | || info->gc_keep_exported |
b407645f AM |
5303 | || info->export_dynamic |
5304 | || (eh->elf.dynamic | |
5305 | && d != NULL | |
2cdcc330 AM |
5306 | && (*d->match) (&d->head, NULL, |
5307 | eh->elf.root.root.string))) | |
e278ae05 | 5308 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5309 | || !bfd_hide_sym_by_version (info->version_info, |
5310 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5311 | { |
5312 | asection *code_sec; | |
b31867b6 | 5313 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5314 | |
5315 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5316 | ||
5317 | /* Function descriptor syms cause the associated | |
5318 | function code sym section to be marked. */ | |
b31867b6 AM |
5319 | fh = defined_code_entry (eh); |
5320 | if (fh != NULL) | |
5321 | { | |
5322 | code_sec = fh->elf.root.u.def.section; | |
5323 | code_sec->flags |= SEC_KEEP; | |
5324 | } | |
64d03ab5 AM |
5325 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5326 | && opd_entry_value (eh->elf.root.u.def.section, | |
5327 | eh->elf.root.u.def.value, | |
aef36ac1 | 5328 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5329 | code_sec->flags |= SEC_KEEP; |
5330 | } | |
5331 | ||
5332 | return TRUE; | |
5333 | } | |
5334 | ||
5bd4f169 AM |
5335 | /* Return the section that should be marked against GC for a given |
5336 | relocation. */ | |
5337 | ||
5338 | static asection * | |
4ce794b7 | 5339 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5340 | struct bfd_link_info *info, |
4ce794b7 AM |
5341 | Elf_Internal_Rela *rel, |
5342 | struct elf_link_hash_entry *h, | |
5343 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5344 | { |
ccfa59ea AM |
5345 | asection *rsec; |
5346 | ||
ccfa59ea AM |
5347 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5348 | function sections, as all functions are referenced in .opd. */ | |
5349 | rsec = NULL; | |
5350 | if (get_opd_info (sec) != NULL) | |
5351 | return rsec; | |
1e2f5b6e | 5352 | |
5bd4f169 AM |
5353 | if (h != NULL) |
5354 | { | |
04c9666a | 5355 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5356 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5357 | |
4ce794b7 | 5358 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5359 | switch (r_type) |
5bd4f169 AM |
5360 | { |
5361 | case R_PPC64_GNU_VTINHERIT: | |
5362 | case R_PPC64_GNU_VTENTRY: | |
5363 | break; | |
5364 | ||
5365 | default: | |
5366 | switch (h->root.type) | |
5367 | { | |
5368 | case bfd_link_hash_defined: | |
5369 | case bfd_link_hash_defweak: | |
ccfa59ea | 5370 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5371 | fdh = defined_func_desc (eh); |
5372 | if (fdh != NULL) | |
8c5b4e52 AM |
5373 | { |
5374 | /* -mcall-aixdesc code references the dot-symbol on | |
5375 | a call reloc. Mark the function descriptor too | |
5376 | against garbage collection. */ | |
5377 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5378 | if (fdh->elf.is_weakalias) |
5379 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5380 | eh = fdh; |
5381 | } | |
1e2f5b6e AM |
5382 | |
5383 | /* Function descriptor syms cause the associated | |
5384 | function code sym section to be marked. */ | |
b31867b6 AM |
5385 | fh = defined_code_entry (eh); |
5386 | if (fh != NULL) | |
ccfa59ea AM |
5387 | { |
5388 | /* They also mark their opd section. */ | |
74f0fb50 | 5389 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5390 | |
b31867b6 | 5391 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5392 | } |
8387904d AM |
5393 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5394 | && opd_entry_value (eh->elf.root.u.def.section, | |
5395 | eh->elf.root.u.def.value, | |
aef36ac1 | 5396 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5397 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5398 | else |
1e2f5b6e AM |
5399 | rsec = h->root.u.def.section; |
5400 | break; | |
5bd4f169 AM |
5401 | |
5402 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5403 | rsec = h->root.u.c.p->section; |
5404 | break; | |
5bd4f169 AM |
5405 | |
5406 | default: | |
fb34365b | 5407 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5408 | } |
5409 | } | |
5410 | } | |
5411 | else | |
5412 | { | |
74f0fb50 | 5413 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5414 | |
5415 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5416 | opd = get_opd_info (rsec); |
5417 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5418 | { |
74f0fb50 | 5419 | rsec->gc_mark = 1; |
ccfa59ea | 5420 | |
51aecdc5 | 5421 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5422 | } |
5bd4f169 AM |
5423 | } |
5424 | ||
1e2f5b6e | 5425 | return rsec; |
5bd4f169 AM |
5426 | } |
5427 | ||
deb0e272 AM |
5428 | /* The maximum size of .sfpr. */ |
5429 | #define SFPR_MAX (218*4) | |
5430 | ||
5431 | struct sfpr_def_parms | |
5432 | { | |
699733f6 AM |
5433 | const char name[12]; |
5434 | unsigned char lo, hi; | |
2cdcc330 AM |
5435 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5436 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5437 | }; |
5438 | ||
a4b6fadd AM |
5439 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5440 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5441 | instead. */ | |
deb0e272 | 5442 | |
4dfe6ac6 | 5443 | static bfd_boolean |
a4b6fadd AM |
5444 | sfpr_define (struct bfd_link_info *info, |
5445 | const struct sfpr_def_parms *parm, | |
5446 | asection *stub_sec) | |
deb0e272 AM |
5447 | { |
5448 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5449 | unsigned int i; | |
5450 | size_t len = strlen (parm->name); | |
5451 | bfd_boolean writing = FALSE; | |
699733f6 | 5452 | char sym[16]; |
deb0e272 | 5453 | |
4dfe6ac6 NC |
5454 | if (htab == NULL) |
5455 | return FALSE; | |
5456 | ||
deb0e272 AM |
5457 | memcpy (sym, parm->name, len); |
5458 | sym[len + 2] = 0; | |
5459 | ||
5460 | for (i = parm->lo; i <= parm->hi; i++) | |
5461 | { | |
a4b6fadd | 5462 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5463 | |
5464 | sym[len + 0] = i / 10 + '0'; | |
5465 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 5466 | h = (struct ppc_link_hash_entry *) |
b32547cd | 5467 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 5468 | if (stub_sec != NULL) |
deb0e272 | 5469 | { |
a4b6fadd AM |
5470 | if (h != NULL |
5471 | && h->elf.root.type == bfd_link_hash_defined | |
5472 | && h->elf.root.u.def.section == htab->sfpr) | |
5473 | { | |
5474 | struct elf_link_hash_entry *s; | |
5475 | char buf[32]; | |
5476 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5477 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5478 | if (s == NULL) | |
5479 | return FALSE; | |
5480 | if (s->root.type == bfd_link_hash_new | |
5481 | || (s->root.type = bfd_link_hash_defined | |
5482 | && s->root.u.def.section == stub_sec)) | |
5483 | { | |
5484 | s->root.type = bfd_link_hash_defined; | |
5485 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5486 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5487 | + h->elf.root.u.def.value); |
5488 | s->ref_regular = 1; | |
5489 | s->def_regular = 1; | |
5490 | s->ref_regular_nonweak = 1; | |
5491 | s->forced_local = 1; | |
5492 | s->non_elf = 0; | |
5493 | s->root.linker_def = 1; | |
5494 | } | |
5495 | } | |
5496 | continue; | |
5497 | } | |
5498 | if (h != NULL) | |
5499 | { | |
5500 | h->save_res = 1; | |
5501 | if (!h->elf.def_regular) | |
deb0e272 | 5502 | { |
a4b6fadd AM |
5503 | h->elf.root.type = bfd_link_hash_defined; |
5504 | h->elf.root.u.def.section = htab->sfpr; | |
5505 | h->elf.root.u.def.value = htab->sfpr->size; | |
5506 | h->elf.type = STT_FUNC; | |
5507 | h->elf.def_regular = 1; | |
b32547cd | 5508 | h->elf.non_elf = 0; |
a4b6fadd AM |
5509 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5510 | writing = TRUE; | |
deb0e272 | 5511 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5512 | { |
2cdcc330 AM |
5513 | htab->sfpr->contents |
5514 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5515 | if (htab->sfpr->contents == NULL) |
5516 | return FALSE; | |
5517 | } | |
deb0e272 AM |
5518 | } |
5519 | } | |
5520 | if (writing) | |
5521 | { | |
5522 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5523 | if (i != parm->hi) | |
5524 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5525 | else | |
5526 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5527 | htab->sfpr->size = p - htab->sfpr->contents; | |
5528 | } | |
5529 | } | |
5530 | ||
5531 | return TRUE; | |
5532 | } | |
5533 | ||
5534 | static bfd_byte * | |
5535 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5536 | { | |
5537 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5538 | return p + 4; | |
5539 | } | |
5540 | ||
5541 | static bfd_byte * | |
5542 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5543 | { | |
5544 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5545 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5546 | p = p + 4; |
5547 | bfd_put_32 (abfd, BLR, p); | |
5548 | return p + 4; | |
5549 | } | |
5550 | ||
5551 | static bfd_byte * | |
5552 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5553 | { | |
5554 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5555 | return p + 4; | |
5556 | } | |
5557 | ||
5558 | static bfd_byte * | |
5559 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5560 | { | |
a078d95a | 5561 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5562 | p = p + 4; |
5563 | p = restgpr0 (abfd, p, r); | |
5564 | bfd_put_32 (abfd, MTLR_R0, p); | |
5565 | p = p + 4; | |
5566 | if (r == 29) | |
5567 | { | |
5568 | p = restgpr0 (abfd, p, 30); | |
5569 | p = restgpr0 (abfd, p, 31); | |
5570 | } | |
5571 | bfd_put_32 (abfd, BLR, p); | |
5572 | return p + 4; | |
5573 | } | |
5574 | ||
5575 | static bfd_byte * | |
5576 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5577 | { | |
5578 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5579 | return p + 4; | |
5580 | } | |
5581 | ||
5582 | static bfd_byte * | |
5583 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5584 | { | |
5585 | p = savegpr1 (abfd, p, r); | |
5586 | bfd_put_32 (abfd, BLR, p); | |
5587 | return p + 4; | |
5588 | } | |
5589 | ||
5590 | static bfd_byte * | |
5591 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5592 | { | |
5593 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5594 | return p + 4; | |
5595 | } | |
5596 | ||
5597 | static bfd_byte * | |
5598 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5599 | { | |
5600 | p = restgpr1 (abfd, p, r); | |
5601 | bfd_put_32 (abfd, BLR, p); | |
5602 | return p + 4; | |
5603 | } | |
5604 | ||
5605 | static bfd_byte * | |
5606 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5607 | { | |
5608 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5609 | return p + 4; | |
5610 | } | |
5611 | ||
5612 | static bfd_byte * | |
5613 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5614 | { | |
5615 | p = savefpr (abfd, p, r); | |
a078d95a | 5616 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5617 | p = p + 4; |
5618 | bfd_put_32 (abfd, BLR, p); | |
5619 | return p + 4; | |
5620 | } | |
5621 | ||
5622 | static bfd_byte * | |
5623 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5624 | { | |
5625 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5626 | return p + 4; | |
5627 | } | |
5628 | ||
5629 | static bfd_byte * | |
5630 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5631 | { | |
a078d95a | 5632 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5633 | p = p + 4; |
5634 | p = restfpr (abfd, p, r); | |
5635 | bfd_put_32 (abfd, MTLR_R0, p); | |
5636 | p = p + 4; | |
5637 | if (r == 29) | |
5638 | { | |
5639 | p = restfpr (abfd, p, 30); | |
5640 | p = restfpr (abfd, p, 31); | |
5641 | } | |
5642 | bfd_put_32 (abfd, BLR, p); | |
5643 | return p + 4; | |
5644 | } | |
5645 | ||
5646 | static bfd_byte * | |
5647 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5648 | { | |
5649 | p = savefpr (abfd, p, r); | |
5650 | bfd_put_32 (abfd, BLR, p); | |
5651 | return p + 4; | |
5652 | } | |
5653 | ||
5654 | static bfd_byte * | |
5655 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5656 | { | |
5657 | p = restfpr (abfd, p, r); | |
5658 | bfd_put_32 (abfd, BLR, p); | |
5659 | return p + 4; | |
5660 | } | |
5661 | ||
5662 | static bfd_byte * | |
5663 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5664 | { | |
5665 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5666 | p = p + 4; | |
5667 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5668 | return p + 4; | |
5669 | } | |
5670 | ||
5671 | static bfd_byte * | |
5672 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5673 | { | |
5674 | p = savevr (abfd, p, r); | |
5675 | bfd_put_32 (abfd, BLR, p); | |
5676 | return p + 4; | |
5677 | } | |
5678 | ||
5679 | static bfd_byte * | |
5680 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5681 | { | |
5682 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5683 | p = p + 4; | |
5684 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5685 | return p + 4; | |
5686 | } | |
5687 | ||
5688 | static bfd_byte * | |
5689 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5690 | { | |
5691 | p = restvr (abfd, p, r); | |
5692 | bfd_put_32 (abfd, BLR, p); | |
5693 | return p + 4; | |
5694 | } | |
5695 | ||
e86ce104 AM |
5696 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5697 | information on function code symbol entries to their corresponding | |
5698 | function descriptor symbol entries. */ | |
deb0e272 | 5699 | |
b34976b6 | 5700 | static bfd_boolean |
4ce794b7 | 5701 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5702 | { |
e86ce104 | 5703 | struct bfd_link_info *info; |
65f38f15 | 5704 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
5705 | struct ppc_link_hash_entry *fh; |
5706 | struct ppc_link_hash_entry *fdh; | |
5707 | bfd_boolean force_local; | |
5bd4f169 | 5708 | |
50bc7936 AM |
5709 | fh = (struct ppc_link_hash_entry *) h; |
5710 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5711 | return TRUE; |
e86ce104 | 5712 | |
8c5b4e52 AM |
5713 | if (!fh->is_func) |
5714 | return TRUE; | |
5715 | ||
5716 | if (fh->elf.root.root.string[0] != '.' | |
5717 | || fh->elf.root.root.string[1] == '\0') | |
5718 | return TRUE; | |
5719 | ||
4ce794b7 | 5720 | info = inf; |
65f38f15 | 5721 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5722 | if (htab == NULL) |
5723 | return FALSE; | |
5bd4f169 | 5724 | |
8c5b4e52 AM |
5725 | /* Find the corresponding function descriptor symbol. */ |
5726 | fdh = lookup_fdh (fh, htab); | |
5727 | ||
c09bdfe5 AM |
5728 | /* Resolve undefined references to dot-symbols as the value |
5729 | in the function descriptor, if we have one in a regular object. | |
5730 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5731 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
5732 | if ((fh->elf.root.type == bfd_link_hash_undefined |
5733 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
5734 | && (fdh->elf.root.type == bfd_link_hash_defined | |
5735 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
5736 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
5737 | && opd_entry_value (fdh->elf.root.u.def.section, | |
5738 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 5739 | &fh->elf.root.u.def.section, |
aef36ac1 | 5740 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 5741 | { |
b31867b6 | 5742 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 5743 | fh->elf.forced_local = 1; |
b31867b6 AM |
5744 | fh->elf.def_regular = fdh->elf.def_regular; |
5745 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
5746 | } |
5747 | ||
8c5b4e52 AM |
5748 | if (!fh->elf.dynamic) |
5749 | { | |
5750 | struct plt_entry *ent; | |
5bd4f169 | 5751 | |
8c5b4e52 AM |
5752 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
5753 | if (ent->plt.refcount > 0) | |
5754 | break; | |
5755 | if (ent == NULL) | |
5756 | return TRUE; | |
5757 | } | |
5bd4f169 | 5758 | |
8c5b4e52 | 5759 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 5760 | if (fdh == NULL |
0e1862bb | 5761 | && !bfd_link_executable (info) |
50bc7936 AM |
5762 | && (fh->elf.root.type == bfd_link_hash_undefined |
5763 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5764 | { | |
908b32fc | 5765 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5766 | if (fdh == NULL) |
5767 | return FALSE; | |
50bc7936 | 5768 | } |
648cca2c | 5769 | |
8c5b4e52 | 5770 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
5771 | if (fdh != NULL |
5772 | && fdh->fake | |
8c5b4e52 AM |
5773 | && (fh->elf.root.type == bfd_link_hash_defined |
5774 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
5775 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 5776 | |
8c5b4e52 AM |
5777 | /* Transfer dynamic linking information to the function descriptor. */ |
5778 | if (fdh != NULL) | |
5779 | { | |
f5385ebf AM |
5780 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5781 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5782 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5783 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
5784 | fdh->elf.dynamic |= fh->elf.dynamic; |
5785 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
5786 | || fh->elf.type == STT_FUNC | |
5787 | || fh->elf.type == STT_GNU_IFUNC); | |
5788 | move_plt_plist (fh, fdh); | |
5789 | ||
5790 | if (!fdh->elf.forced_local | |
5791 | && fh->elf.dynindx != -1) | |
5792 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
5793 | return FALSE; | |
e86ce104 AM |
5794 | } |
5795 | ||
50bc7936 AM |
5796 | /* Now that the info is on the function descriptor, clear the |
5797 | function code sym info. Any function code syms for which we | |
5798 | don't have a definition in a regular file, we force local. | |
5799 | This prevents a shared library from exporting syms that have | |
5800 | been imported from another library. Function code syms that | |
5801 | are really in the library we must leave global to prevent the | |
5802 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5803 | force_local = (!fh->elf.def_regular |
5804 | || fdh == NULL | |
5805 | || !fdh->elf.def_regular | |
5806 | || fdh->elf.forced_local); | |
50bc7936 AM |
5807 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5808 | ||
b34976b6 | 5809 | return TRUE; |
e86ce104 | 5810 | } |
40b8271b | 5811 | |
a4b6fadd AM |
5812 | static const struct sfpr_def_parms save_res_funcs[] = |
5813 | { | |
5814 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5815 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5816 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5817 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5818 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5819 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5820 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5821 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5822 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5823 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5824 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5825 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5826 | }; | |
5827 | ||
e86ce104 | 5828 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5829 | this hook to a) provide some gcc support functions, and b) transfer |
5830 | dynamic linking information gathered so far on function code symbol | |
5831 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5832 | |
b34976b6 | 5833 | static bfd_boolean |
4ce794b7 AM |
5834 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5835 | struct bfd_link_info *info) | |
e86ce104 AM |
5836 | { |
5837 | struct ppc_link_hash_table *htab; | |
5838 | ||
5839 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
5840 | if (htab == NULL) |
5841 | return FALSE; | |
5842 | ||
b32547cd AM |
5843 | /* Provide any missing _save* and _rest* functions. */ |
5844 | if (htab->sfpr != NULL) | |
5845 | { | |
5846 | unsigned int i; | |
5847 | ||
5848 | htab->sfpr->size = 0; | |
5849 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
5850 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
5851 | return FALSE; | |
5852 | if (htab->sfpr->size == 0) | |
5853 | htab->sfpr->flags |= SEC_EXCLUDE; | |
5854 | } | |
5855 | ||
5856 | if (bfd_link_relocatable (info)) | |
5857 | return TRUE; | |
5858 | ||
5859 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
5860 | { |
5861 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
5862 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
5863 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
5864 | if (!htab->elf.hgot->def_regular |
5865 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
5866 | { | |
5867 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
5868 | htab->elf.hgot->root.u.def.value = 0; | |
5869 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
5870 | htab->elf.hgot->def_regular = 1; | |
5871 | htab->elf.hgot->root.linker_def = 1; | |
5872 | } | |
dba6fa9b | 5873 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
5874 | htab->elf.hgot->other |
5875 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 5876 | } |
c66bb0ee | 5877 | |
8c5b4e52 AM |
5878 | if (htab->need_func_desc_adj) |
5879 | { | |
5880 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5881 | htab->need_func_desc_adj = 0; | |
5882 | } | |
805fc799 | 5883 | |
b34976b6 | 5884 | return TRUE; |
e86ce104 AM |
5885 | } |
5886 | ||
98bbb1b8 | 5887 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 5888 | |
98bbb1b8 | 5889 | static asection * |
a345bc8d AM |
5890 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
5891 | { | |
5892 | struct ppc_link_hash_entry *eh; | |
5893 | struct elf_dyn_relocs *p; | |
5894 | ||
5895 | eh = (struct ppc_link_hash_entry *) h; | |
5896 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5897 | { | |
5898 | asection *s = p->sec->output_section; | |
5899 | ||
5900 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 5901 | return p->sec; |
a345bc8d | 5902 | } |
98bbb1b8 | 5903 | return NULL; |
a345bc8d AM |
5904 | } |
5905 | ||
d311bc8b | 5906 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
5907 | aliases, that apply to read-only sections. Cannot be used after |
5908 | size_dynamic_sections. */ | |
d311bc8b AM |
5909 | |
5910 | static bfd_boolean | |
5911 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
5912 | { | |
5913 | struct ppc_link_hash_entry *eh; | |
5914 | ||
5915 | eh = (struct ppc_link_hash_entry *) h; | |
5916 | do | |
5917 | { | |
5918 | if (readonly_dynrelocs (&eh->elf)) | |
5919 | return TRUE; | |
ab2477e1 | 5920 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
2cdcc330 AM |
5921 | } |
5922 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
5923 | |
5924 | return FALSE; | |
5925 | } | |
8a2058b5 | 5926 | |
8a9e8e72 AM |
5927 | /* Return whether EH has pc-relative dynamic relocs. */ |
5928 | ||
5929 | static bfd_boolean | |
5930 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
5931 | { | |
5932 | struct elf_dyn_relocs *p; | |
5933 | ||
5934 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5935 | if (p->pc_count != 0) | |
5936 | return TRUE; | |
5937 | return FALSE; | |
5938 | } | |
5939 | ||
8a2058b5 AM |
5940 | /* Return true if a global entry stub will be created for H. Valid |
5941 | for ELFv2 before plt entries have been allocated. */ | |
5942 | ||
5943 | static bfd_boolean | |
5944 | global_entry_stub (struct elf_link_hash_entry *h) | |
5945 | { | |
5946 | struct plt_entry *pent; | |
5947 | ||
5948 | if (!h->pointer_equality_needed | |
5949 | || h->def_regular) | |
5950 | return FALSE; | |
5951 | ||
5952 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
5953 | if (pent->plt.refcount > 0 | |
5954 | && pent->addend == 0) | |
5955 | return TRUE; | |
5956 | ||
5957 | return FALSE; | |
5958 | } | |
5959 | ||
e86ce104 AM |
5960 | /* Adjust a symbol defined by a dynamic object and referenced by a |
5961 | regular object. The current definition is in some section of the | |
5962 | dynamic object, but we're not including those sections. We have to | |
5963 | change the definition to something the rest of the link can | |
5964 | understand. */ | |
5965 | ||
b34976b6 | 5966 | static bfd_boolean |
4ce794b7 AM |
5967 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5968 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5969 | { |
5970 | struct ppc_link_hash_table *htab; | |
5474d94f | 5971 | asection *s, *srel; |
e86ce104 AM |
5972 | |
5973 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
5974 | if (htab == NULL) |
5975 | return FALSE; | |
e86ce104 AM |
5976 | |
5977 | /* Deal with function syms. */ | |
5978 | if (h->type == STT_FUNC | |
e054468f | 5979 | || h->type == STT_GNU_IFUNC |
f5385ebf | 5980 | || h->needs_plt) |
e86ce104 | 5981 | { |
529fe20e AM |
5982 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
5983 | || SYMBOL_CALLS_LOCAL (info, h) | |
5984 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
5985 | /* Discard dyn_relocs when non-pic if we've decided that a | |
5986 | function symbol is local and not an ifunc. We keep dynamic | |
5987 | relocs for ifuncs when local rather than always emitting a | |
5988 | plt call stub for them and defining the symbol on the call | |
5989 | stub. We can't do that for ELFv1 anyway (a function symbol | |
5990 | is defined on a descriptor, not code) and it can be faster at | |
5991 | run-time due to not needing to bounce through a stub. The | |
5992 | dyn_relocs for ifuncs will be applied even in a static | |
5993 | executable. */ | |
5994 | if (!bfd_link_pic (info) | |
5995 | && h->type != STT_GNU_IFUNC | |
5996 | && local) | |
5997 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
5998 | ||
e86ce104 AM |
5999 | /* Clear procedure linkage table information for any symbol that |
6000 | won't need a .plt entry. */ | |
411e1bfb AM |
6001 | struct plt_entry *ent; |
6002 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6003 | if (ent->plt.refcount > 0) | |
6004 | break; | |
8387904d | 6005 | if (ent == NULL |
2d7ad24e AM |
6006 | || (h->type != STT_GNU_IFUNC |
6007 | && local | |
3e04d765 AM |
6008 | && (htab->can_convert_all_inline_plt |
6009 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
6010 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 6011 | { |
411e1bfb | 6012 | h->plt.plist = NULL; |
f5385ebf | 6013 | h->needs_plt = 0; |
d1eca1e4 | 6014 | h->pointer_equality_needed = 0; |
40b8271b | 6015 | } |
8a2058b5 | 6016 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6017 | { |
d1eca1e4 AM |
6018 | /* Taking a function's address in a read/write section |
6019 | doesn't require us to define the function symbol in the | |
6020 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6021 | be used instead. The reason we prefer a few more dynamic |
6022 | relocs is that calling via a global entry stub costs a | |
6023 | few more instructions, and pointer_equality_needed causes | |
6024 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6025 | if (global_entry_stub (h)) |
d1eca1e4 | 6026 | { |
ab2477e1 | 6027 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
6028 | { |
6029 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6030 | /* If we haven't seen a branch reloc and the symbol |
6031 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6032 | if (!h->needs_plt) |
6033 | h->plt.plist = NULL; | |
6034 | } | |
6035 | else if (!bfd_link_pic (info)) | |
6036 | /* We are going to be defining the function symbol on the | |
6037 | plt stub, so no dyn_relocs needed when non-pic. */ | |
6038 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
6039 | } |
6040 | ||
3988aed5 AM |
6041 | /* ELFv2 function symbols can't have copy relocs. */ |
6042 | return TRUE; | |
6043 | } | |
6044 | else if (!h->needs_plt | |
ab2477e1 | 6045 | && !readonly_dynrelocs (h)) |
3988aed5 | 6046 | { |
04383fd1 AM |
6047 | /* If we haven't seen a branch reloc and the symbol isn't an |
6048 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6049 | h->plt.plist = NULL; |
6050 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6051 | return TRUE; |
6052 | } | |
5bd4f169 | 6053 | } |
bbd7ec4a | 6054 | else |
411e1bfb | 6055 | h->plt.plist = NULL; |
5bd4f169 AM |
6056 | |
6057 | /* If this is a weak symbol, and there is a real definition, the | |
6058 | processor independent code will have arranged for us to see the | |
6059 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6060 | if (h->is_weakalias) |
5bd4f169 | 6061 | { |
60d67dc8 AM |
6062 | struct elf_link_hash_entry *def = weakdef (h); |
6063 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6064 | h->root.u.def.section = def->root.u.def.section; | |
6065 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6066 | if (def->root.u.def.section == htab->elf.sdynbss |
6067 | || def->root.u.def.section == htab->elf.sdynrelro) | |
6068 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 6069 | return TRUE; |
5bd4f169 AM |
6070 | } |
6071 | ||
5bd4f169 AM |
6072 | /* If we are creating a shared library, we must presume that the |
6073 | only references to the symbol are via the global offset table. | |
6074 | For such cases we need not do anything here; the relocations will | |
6075 | be handled correctly by relocate_section. */ | |
0e1862bb | 6076 | if (bfd_link_pic (info)) |
b34976b6 | 6077 | return TRUE; |
5bd4f169 | 6078 | |
65f38f15 AM |
6079 | /* If there are no references to this symbol that do not use the |
6080 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6081 | if (!h->non_got_ref) |
b34976b6 | 6082 | return TRUE; |
65f38f15 | 6083 | |
b186458a | 6084 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6085 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6086 | |
d93d1c80 AM |
6087 | /* If -z nocopyreloc was given, don't generate them either. */ |
6088 | || info->nocopyreloc | |
a127494f | 6089 | |
dce2246a | 6090 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6091 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 6092 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 6093 | |
d93d1c80 AM |
6094 | /* Protected variables do not work with .dynbss. The copy in |
6095 | .dynbss won't be used by the shared library with the protected | |
6096 | definition for the variable. Text relocations are preferable | |
6097 | to an incorrect program. */ | |
6098 | || h->protected_def) | |
529fe20e | 6099 | return TRUE; |
a127494f | 6100 | |
5d35169e | 6101 | if (h->plt.plist != NULL) |
97b639ba AM |
6102 | { |
6103 | /* We should never get here, but unfortunately there are versions | |
6104 | of gcc out there that improperly (for this ABI) put initialized | |
6105 | function pointers, vtable refs and suchlike in read-only | |
6106 | sections. Allow them to proceed, but warn that this might | |
6107 | break at runtime. */ | |
25f53a85 | 6108 | info->callbacks->einfo |
c1c8c1ef | 6109 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6110 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6111 | h->root.root.string); |
6112 | } | |
5d35169e AM |
6113 | |
6114 | /* This is a reference to a symbol defined by a dynamic object which | |
6115 | is not a function. */ | |
6116 | ||
5bd4f169 AM |
6117 | /* We must allocate the symbol in our .dynbss section, which will |
6118 | become part of the .bss section of the executable. There will be | |
6119 | an entry for this symbol in the .dynsym section. The dynamic | |
6120 | object will contain position independent code, so all references | |
6121 | from the dynamic object to this symbol will go through the global | |
6122 | offset table. The dynamic linker will use the .dynsym entry to | |
6123 | determine the address it must put in the global offset table, so | |
6124 | both the dynamic object and the regular object will refer to the | |
6125 | same memory location for the variable. */ | |
5474d94f AM |
6126 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6127 | { | |
6128 | s = htab->elf.sdynrelro; | |
6129 | srel = htab->elf.sreldynrelro; | |
6130 | } | |
6131 | else | |
6132 | { | |
6133 | s = htab->elf.sdynbss; | |
6134 | srel = htab->elf.srelbss; | |
6135 | } | |
1d7e9d18 | 6136 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6137 | { |
4a7e5234 AM |
6138 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6139 | linker to copy the initial value out of the dynamic object | |
6140 | and into the runtime process image. */ | |
5474d94f | 6141 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6142 | h->needs_copy = 1; |
5bd4f169 AM |
6143 | } |
6144 | ||
529fe20e AM |
6145 | /* We no longer want dyn_relocs. */ |
6146 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 6147 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6148 | } |
6149 | ||
e86ce104 AM |
6150 | /* If given a function descriptor symbol, hide both the function code |
6151 | sym and the descriptor. */ | |
6152 | static void | |
4ce794b7 AM |
6153 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6154 | struct elf_link_hash_entry *h, | |
6155 | bfd_boolean force_local) | |
e86ce104 | 6156 | { |
34814b9f | 6157 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6158 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6159 | ||
34814b9f AM |
6160 | eh = (struct ppc_link_hash_entry *) h; |
6161 | if (eh->is_func_descriptor) | |
e86ce104 | 6162 | { |
34814b9f | 6163 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6164 | |
721956f4 | 6165 | if (fh == NULL) |
d1329ca3 AM |
6166 | { |
6167 | const char *p, *q; | |
b8ac2841 | 6168 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6169 | char save; |
6170 | ||
6171 | /* We aren't supposed to use alloca in BFD because on | |
6172 | systems which do not have alloca the version in libiberty | |
6173 | calls xmalloc, which might cause the program to crash | |
6174 | when it runs out of memory. This function doesn't have a | |
6175 | return status, so there's no way to gracefully return an | |
6176 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6177 | accessed; It's either a string in an ELF string table, |
6178 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6179 | |
34814b9f | 6180 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6181 | save = *p; |
6182 | *(char *) p = '.'; | |
34814b9f | 6183 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 6184 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6185 | *(char *) p = save; |
6186 | ||
6187 | /* Unfortunately, if it so happens that the string we were | |
6188 | looking for was allocated immediately before this string, | |
6189 | then we overwrote the string terminator. That's the only | |
6190 | reason the lookup should fail. */ | |
6191 | if (fh == NULL) | |
6192 | { | |
34814b9f AM |
6193 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6194 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6195 | --q, --p; |
34814b9f AM |
6196 | if (q < eh->elf.root.root.string && *p == '.') |
6197 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 6198 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
6199 | } |
6200 | if (fh != NULL) | |
6201 | { | |
34814b9f AM |
6202 | eh->oh = fh; |
6203 | fh->oh = eh; | |
d1329ca3 AM |
6204 | } |
6205 | } | |
e86ce104 | 6206 | if (fh != NULL) |
34814b9f | 6207 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6208 | } |
6209 | } | |
6210 | ||
411e1bfb | 6211 | static bfd_boolean |
8843416a AM |
6212 | get_sym_h (struct elf_link_hash_entry **hp, |
6213 | Elf_Internal_Sym **symp, | |
6214 | asection **symsecp, | |
f961d9dd | 6215 | unsigned char **tls_maskp, |
8843416a AM |
6216 | Elf_Internal_Sym **locsymsp, |
6217 | unsigned long r_symndx, | |
6218 | bfd *ibfd) | |
411e1bfb | 6219 | { |
0ffa91dd | 6220 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6221 | |
6222 | if (r_symndx >= symtab_hdr->sh_info) | |
6223 | { | |
6224 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6225 | struct elf_link_hash_entry *h; | |
6226 | ||
6227 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6228 | h = elf_follow_link (h); |
411e1bfb AM |
6229 | |
6230 | if (hp != NULL) | |
6231 | *hp = h; | |
6232 | ||
6233 | if (symp != NULL) | |
6234 | *symp = NULL; | |
6235 | ||
6236 | if (symsecp != NULL) | |
6237 | { | |
6238 | asection *symsec = NULL; | |
6239 | if (h->root.type == bfd_link_hash_defined | |
6240 | || h->root.type == bfd_link_hash_defweak) | |
6241 | symsec = h->root.u.def.section; | |
6242 | *symsecp = symsec; | |
6243 | } | |
6244 | ||
e7b938ca | 6245 | if (tls_maskp != NULL) |
411e1bfb AM |
6246 | { |
6247 | struct ppc_link_hash_entry *eh; | |
6248 | ||
6249 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6250 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6251 | } |
6252 | } | |
6253 | else | |
6254 | { | |
6255 | Elf_Internal_Sym *sym; | |
6256 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6257 | ||
6258 | if (locsyms == NULL) | |
6259 | { | |
6260 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6261 | if (locsyms == NULL) | |
6262 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6263 | symtab_hdr->sh_info, | |
6264 | 0, NULL, NULL, NULL); | |
6265 | if (locsyms == NULL) | |
6266 | return FALSE; | |
6267 | *locsymsp = locsyms; | |
6268 | } | |
6269 | sym = locsyms + r_symndx; | |
6270 | ||
6271 | if (hp != NULL) | |
6272 | *hp = NULL; | |
6273 | ||
6274 | if (symp != NULL) | |
6275 | *symp = sym; | |
6276 | ||
6277 | if (symsecp != NULL) | |
cb33740c | 6278 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6279 | |
e7b938ca | 6280 | if (tls_maskp != NULL) |
411e1bfb AM |
6281 | { |
6282 | struct got_entry **lgot_ents; | |
f961d9dd | 6283 | unsigned char *tls_mask; |
411e1bfb | 6284 | |
e7b938ca | 6285 | tls_mask = NULL; |
411e1bfb AM |
6286 | lgot_ents = elf_local_got_ents (ibfd); |
6287 | if (lgot_ents != NULL) | |
6288 | { | |
e054468f AM |
6289 | struct plt_entry **local_plt = (struct plt_entry **) |
6290 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6291 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6292 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6293 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6294 | } |
e7b938ca | 6295 | *tls_maskp = tls_mask; |
411e1bfb AM |
6296 | } |
6297 | } | |
6298 | return TRUE; | |
6299 | } | |
6300 | ||
e7b938ca | 6301 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6302 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6303 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6304 | |
6305 | static int | |
f961d9dd | 6306 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6307 | unsigned long *toc_symndx, |
6308 | bfd_vma *toc_addend, | |
0d4792f7 | 6309 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6310 | const Elf_Internal_Rela *rel, |
6311 | bfd *ibfd) | |
411e1bfb AM |
6312 | { |
6313 | unsigned long r_symndx; | |
0d4792f7 | 6314 | int next_r; |
411e1bfb AM |
6315 | struct elf_link_hash_entry *h; |
6316 | Elf_Internal_Sym *sym; | |
6317 | asection *sec; | |
6318 | bfd_vma off; | |
6319 | ||
6320 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6321 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6322 | return 0; |
411e1bfb | 6323 | |
37da22e5 AM |
6324 | if ((*tls_maskp != NULL |
6325 | && (**tls_maskp & TLS_TLS) != 0 | |
6326 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6327 | || sec == NULL |
6bee8834 | 6328 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6329 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6330 | return 1; |
411e1bfb AM |
6331 | |
6332 | /* Look inside a TOC section too. */ | |
6333 | if (h != NULL) | |
6334 | { | |
6335 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6336 | off = h->root.u.def.value; | |
6337 | } | |
6338 | else | |
6339 | off = sym->st_value; | |
6340 | off += rel->r_addend; | |
6341 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6342 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6343 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6344 | if (toc_symndx != NULL) |
6345 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6346 | if (toc_addend != NULL) |
6347 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6348 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6349 | return 0; | |
854b41e7 | 6350 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6351 | && (next_r == -1 || next_r == -2)) |
6352 | return 1 - next_r; | |
951fd09b | 6353 | return 1; |
411e1bfb AM |
6354 | } |
6355 | ||
3b421ab3 AM |
6356 | /* Find (or create) an entry in the tocsave hash table. */ |
6357 | ||
6358 | static struct tocsave_entry * | |
6359 | tocsave_find (struct ppc_link_hash_table *htab, | |
6360 | enum insert_option insert, | |
6361 | Elf_Internal_Sym **local_syms, | |
6362 | const Elf_Internal_Rela *irela, | |
6363 | bfd *ibfd) | |
6364 | { | |
6365 | unsigned long r_indx; | |
6366 | struct elf_link_hash_entry *h; | |
6367 | Elf_Internal_Sym *sym; | |
6368 | struct tocsave_entry ent, *p; | |
6369 | hashval_t hash; | |
6370 | struct tocsave_entry **slot; | |
6371 | ||
6372 | r_indx = ELF64_R_SYM (irela->r_info); | |
6373 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6374 | return NULL; | |
6375 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6376 | { | |
4eca0228 | 6377 | _bfd_error_handler |
871b3ab2 | 6378 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6379 | return NULL; |
6380 | } | |
6381 | ||
6382 | if (h != NULL) | |
6383 | ent.offset = h->root.u.def.value; | |
6384 | else | |
6385 | ent.offset = sym->st_value; | |
6386 | ent.offset += irela->r_addend; | |
6387 | ||
6388 | hash = tocsave_htab_hash (&ent); | |
6389 | slot = ((struct tocsave_entry **) | |
6390 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6391 | if (slot == NULL) | |
6392 | return NULL; | |
6393 | ||
6394 | if (*slot == NULL) | |
6395 | { | |
6396 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6397 | if (p == NULL) | |
6398 | return NULL; | |
6399 | *p = ent; | |
6400 | *slot = p; | |
6401 | } | |
6402 | return *slot; | |
6403 | } | |
6404 | ||
754021d0 | 6405 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6406 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6407 | |
6408 | static bfd_boolean | |
6409 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6410 | { | |
6411 | struct ppc_link_hash_entry *eh; | |
6412 | asection *sym_sec; | |
74f0fb50 | 6413 | struct _opd_sec_data *opd; |
754021d0 AM |
6414 | |
6415 | if (h->root.type == bfd_link_hash_indirect) | |
6416 | return TRUE; | |
6417 | ||
754021d0 AM |
6418 | if (h->root.type != bfd_link_hash_defined |
6419 | && h->root.type != bfd_link_hash_defweak) | |
6420 | return TRUE; | |
6421 | ||
6422 | eh = (struct ppc_link_hash_entry *) h; | |
6423 | if (eh->adjust_done) | |
6424 | return TRUE; | |
6425 | ||
6426 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6427 | opd = get_opd_info (sym_sec); |
6428 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6429 | { |
51aecdc5 | 6430 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6431 | if (adjust == -1) |
6432 | { | |
6433 | /* This entry has been deleted. */ | |
b3fac117 | 6434 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6435 | if (dsec == NULL) |
6436 | { | |
6437 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6438 | if (discarded_section (dsec)) |
81688140 | 6439 | { |
b3fac117 | 6440 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6441 | break; |
6442 | } | |
6443 | } | |
4025353c | 6444 | eh->elf.root.u.def.value = 0; |
81688140 | 6445 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6446 | } |
6447 | else | |
6448 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6449 | eh->adjust_done = 1; |
6450 | } | |
6451 | return TRUE; | |
6452 | } | |
6453 | ||
8c1d1bb8 | 6454 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6455 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6456 | have already been determined. */ |
6457 | ||
6458 | static bfd_boolean | |
6459 | dec_dynrel_count (bfd_vma r_info, | |
6460 | asection *sec, | |
6461 | struct bfd_link_info *info, | |
6462 | Elf_Internal_Sym **local_syms, | |
6463 | struct elf_link_hash_entry *h, | |
19e08130 | 6464 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6465 | { |
6466 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6467 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6468 | |
6469 | /* Can this reloc be dynamic? This switch, and later tests here | |
6470 | should be kept in sync with the code in check_relocs. */ | |
6471 | r_type = ELF64_R_TYPE (r_info); | |
6472 | switch (r_type) | |
6473 | { | |
6474 | default: | |
6475 | return TRUE; | |
6476 | ||
6477 | case R_PPC64_TPREL16: | |
6478 | case R_PPC64_TPREL16_LO: | |
6479 | case R_PPC64_TPREL16_HI: | |
6480 | case R_PPC64_TPREL16_HA: | |
6481 | case R_PPC64_TPREL16_DS: | |
6482 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6483 | case R_PPC64_TPREL16_HIGH: |
6484 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
6485 | case R_PPC64_TPREL16_HIGHER: |
6486 | case R_PPC64_TPREL16_HIGHERA: | |
6487 | case R_PPC64_TPREL16_HIGHEST: | |
6488 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
6489 | case R_PPC64_TPREL64: |
6490 | case R_PPC64_DTPMOD64: | |
6491 | case R_PPC64_DTPREL64: | |
6492 | case R_PPC64_ADDR64: | |
6493 | case R_PPC64_REL30: | |
6494 | case R_PPC64_REL32: | |
6495 | case R_PPC64_REL64: | |
6496 | case R_PPC64_ADDR14: | |
6497 | case R_PPC64_ADDR14_BRNTAKEN: | |
6498 | case R_PPC64_ADDR14_BRTAKEN: | |
6499 | case R_PPC64_ADDR16: | |
6500 | case R_PPC64_ADDR16_DS: | |
6501 | case R_PPC64_ADDR16_HA: | |
6502 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
6503 | case R_PPC64_ADDR16_HIGH: |
6504 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
6505 | case R_PPC64_ADDR16_HIGHER: |
6506 | case R_PPC64_ADDR16_HIGHERA: | |
6507 | case R_PPC64_ADDR16_HIGHEST: | |
6508 | case R_PPC64_ADDR16_HIGHESTA: | |
6509 | case R_PPC64_ADDR16_LO: | |
6510 | case R_PPC64_ADDR16_LO_DS: | |
6511 | case R_PPC64_ADDR24: | |
6512 | case R_PPC64_ADDR32: | |
6513 | case R_PPC64_UADDR16: | |
6514 | case R_PPC64_UADDR32: | |
6515 | case R_PPC64_UADDR64: | |
6516 | case R_PPC64_TOC: | |
6517 | break; | |
6518 | } | |
6519 | ||
6520 | if (local_syms != NULL) | |
6521 | { | |
6522 | unsigned long r_symndx; | |
8c1d1bb8 AM |
6523 | bfd *ibfd = sec->owner; |
6524 | ||
6525 | r_symndx = ELF64_R_SYM (r_info); | |
6526 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6527 | return FALSE; | |
6528 | } | |
6529 | ||
0e1862bb | 6530 | if ((bfd_link_pic (info) |
1d483afe | 6531 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 6532 | || (h != NULL |
198f1157 | 6533 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
6534 | || h->root.type == bfd_link_hash_defweak |
6535 | || !h->def_regular)))) | |
6536 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 6537 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
6538 | && h != NULL |
6539 | && (h->root.type == bfd_link_hash_defweak | |
6540 | || !h->def_regular))) | |
6541 | ; | |
6542 | else | |
6543 | return TRUE; | |
6544 | ||
6545 | if (h != NULL) | |
6edfbbad | 6546 | { |
19e08130 AM |
6547 | struct elf_dyn_relocs *p; |
6548 | struct elf_dyn_relocs **pp; | |
6549 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6550 | ||
6551 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6552 | with local syms for a given section. Also, symbol flags are | |
6553 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
6554 | report a dynreloc miscount. */ | |
6555 | if (*pp == NULL && info->gc_sections) | |
6556 | return TRUE; | |
6557 | ||
6558 | while ((p = *pp) != NULL) | |
60124e18 | 6559 | { |
19e08130 AM |
6560 | if (p->sec == sec) |
6561 | { | |
6562 | if (!must_be_dyn_reloc (info, r_type)) | |
6563 | p->pc_count -= 1; | |
6564 | p->count -= 1; | |
6565 | if (p->count == 0) | |
6566 | *pp = p->next; | |
6567 | return TRUE; | |
6568 | } | |
6569 | pp = &p->next; | |
60124e18 | 6570 | } |
6edfbbad | 6571 | } |
19e08130 AM |
6572 | else |
6573 | { | |
6574 | struct ppc_dyn_relocs *p; | |
6575 | struct ppc_dyn_relocs **pp; | |
6576 | void *vpp; | |
6577 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 6578 | |
19e08130 AM |
6579 | if (local_syms == NULL) |
6580 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
6581 | if (sym_sec == NULL) | |
6582 | sym_sec = sec; | |
c57da1a7 | 6583 | |
19e08130 AM |
6584 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
6585 | pp = (struct ppc_dyn_relocs **) vpp; | |
6586 | ||
6587 | if (*pp == NULL && info->gc_sections) | |
6588 | return TRUE; | |
6589 | ||
6590 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
6591 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 6592 | { |
19e08130 AM |
6593 | if (p->sec == sec && p->ifunc == is_ifunc) |
6594 | { | |
6595 | p->count -= 1; | |
6596 | if (p->count == 0) | |
6597 | *pp = p->next; | |
6598 | return TRUE; | |
6599 | } | |
6600 | pp = &p->next; | |
8c1d1bb8 | 6601 | } |
8c1d1bb8 AM |
6602 | } |
6603 | ||
695344c0 | 6604 | /* xgettext:c-format */ |
cf97bcb0 AM |
6605 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
6606 | sec->owner, sec); | |
8c1d1bb8 AM |
6607 | bfd_set_error (bfd_error_bad_value); |
6608 | return FALSE; | |
6609 | } | |
6610 | ||
754021d0 AM |
6611 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6612 | only remove those associated with functions in discarded link-once | |
6613 | sections, or weakly defined functions that have been overridden. It | |
6614 | would be possible to remove many more entries for statically linked | |
6615 | applications. */ | |
6616 | ||
b34976b6 | 6617 | bfd_boolean |
e7d1c40c | 6618 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
6619 | { |
6620 | bfd *ibfd; | |
754021d0 | 6621 | bfd_boolean some_edited = FALSE; |
3f764659 | 6622 | asection *need_pad = NULL; |
e7d1c40c AM |
6623 | struct ppc_link_hash_table *htab; |
6624 | ||
6625 | htab = ppc_hash_table (info); | |
6626 | if (htab == NULL) | |
6627 | return FALSE; | |
1e2f5b6e | 6628 | |
c72f2fb2 | 6629 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
6630 | { |
6631 | asection *sec; | |
6632 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6633 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6634 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 6635 | struct _opd_sec_data *opd; |
51aecdc5 | 6636 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 6637 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 6638 | |
854b41e7 AM |
6639 | if (!is_ppc64_elf (ibfd)) |
6640 | continue; | |
6641 | ||
1e2f5b6e | 6642 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 6643 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6644 | continue; |
6645 | ||
dbaa2011 | 6646 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
6647 | continue; |
6648 | ||
1e2f5b6e AM |
6649 | if (sec->output_section == bfd_abs_section_ptr) |
6650 | continue; | |
6651 | ||
6652 | /* Look through the section relocs. */ | |
6653 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6654 | continue; | |
6655 | ||
6cdc0ccc | 6656 | local_syms = NULL; |
0ffa91dd | 6657 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6658 | |
6659 | /* Read the relocations. */ | |
4ce794b7 | 6660 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6661 | info->keep_memory); |
1e2f5b6e | 6662 | if (relstart == NULL) |
b34976b6 | 6663 | return FALSE; |
1e2f5b6e AM |
6664 | |
6665 | /* First run through the relocs to check they are sane, and to | |
6666 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6667 | need_edit = FALSE; |
51aecdc5 | 6668 | broken = FALSE; |
3f764659 | 6669 | need_pad = sec; |
1e2f5b6e | 6670 | relend = relstart + sec->reloc_count; |
50bc7936 | 6671 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6672 | { |
04c9666a | 6673 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6674 | unsigned long r_symndx; |
6675 | asection *sym_sec; | |
6676 | struct elf_link_hash_entry *h; | |
6677 | Elf_Internal_Sym *sym; | |
51aecdc5 | 6678 | bfd_vma offset; |
1e2f5b6e | 6679 | |
51aecdc5 | 6680 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6681 | only interested in the reloc pointing to a function entry |
6682 | point. */ | |
51aecdc5 AM |
6683 | offset = rel->r_offset; |
6684 | if (rel + 1 == relend | |
6685 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
6686 | { |
6687 | /* If someone messes with .opd alignment then after a | |
6688 | "ld -r" we might have padding in the middle of .opd. | |
6689 | Also, there's nothing to prevent someone putting | |
6690 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6691 | optimization for them! */ |
3f764659 | 6692 | broken_opd: |
4eca0228 | 6693 | _bfd_error_handler |
871b3ab2 | 6694 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 6695 | broken = TRUE; |
1e2f5b6e AM |
6696 | break; |
6697 | } | |
6698 | ||
50bc7936 AM |
6699 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6700 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6701 | { | |
4eca0228 | 6702 | _bfd_error_handler |
695344c0 | 6703 | /* xgettext:c-format */ |
871b3ab2 | 6704 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 6705 | ibfd, r_type); |
51aecdc5 | 6706 | broken = TRUE; |
50bc7936 AM |
6707 | break; |
6708 | } | |
6709 | ||
1e2f5b6e | 6710 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6711 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6712 | r_symndx, ibfd)) | |
50bc7936 | 6713 | goto error_ret; |
1e2f5b6e AM |
6714 | |
6715 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6716 | { | |
411e1bfb AM |
6717 | const char *sym_name; |
6718 | if (h != NULL) | |
6719 | sym_name = h->root.root.string; | |
6720 | else | |
26c61ae5 L |
6721 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6722 | sym_sec); | |
411e1bfb | 6723 | |
4eca0228 | 6724 | _bfd_error_handler |
695344c0 | 6725 | /* xgettext:c-format */ |
871b3ab2 | 6726 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 6727 | ibfd, sym_name); |
51aecdc5 | 6728 | broken = TRUE; |
1e2f5b6e AM |
6729 | break; |
6730 | } | |
6731 | ||
51020317 AM |
6732 | /* opd entries are always for functions defined in the |
6733 | current input bfd. If the symbol isn't defined in the | |
6734 | input bfd, then we won't be using the function in this | |
6735 | bfd; It must be defined in a linkonce section in another | |
6736 | bfd, or is weak. It's also possible that we are | |
6737 | discarding the function due to a linker script /DISCARD/, | |
6738 | which we test for via the output_section. */ | |
6739 | if (sym_sec->owner != ibfd | |
6740 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6741 | need_edit = TRUE; |
1e2f5b6e | 6742 | |
50bc7936 | 6743 | rel += 2; |
51aecdc5 AM |
6744 | if (rel + 1 == relend |
6745 | || (rel + 2 < relend | |
6746 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
6747 | ++rel; | |
6748 | ||
6749 | if (rel == relend) | |
3f764659 JJ |
6750 | { |
6751 | if (sec->size == offset + 24) | |
6752 | { | |
6753 | need_pad = NULL; | |
6754 | break; | |
6755 | } | |
51aecdc5 | 6756 | if (sec->size == offset + 16) |
3f764659 JJ |
6757 | { |
6758 | cnt_16b++; | |
6759 | break; | |
6760 | } | |
6761 | goto broken_opd; | |
6762 | } | |
3f764659 JJ |
6763 | else if (rel + 1 < relend |
6764 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6765 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6766 | { | |
51aecdc5 AM |
6767 | if (rel[0].r_offset == offset + 16) |
6768 | cnt_16b++; | |
6769 | else if (rel[0].r_offset != offset + 24) | |
6770 | goto broken_opd; | |
3f764659 JJ |
6771 | } |
6772 | else | |
6773 | goto broken_opd; | |
1e2f5b6e AM |
6774 | } |
6775 | ||
e7d1c40c | 6776 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 6777 | |
51aecdc5 | 6778 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
6779 | { |
6780 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 6781 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 6782 | bfd_byte *rptr, *wptr; |
983bddc8 | 6783 | bfd_byte *new_contents; |
74f0fb50 AM |
6784 | bfd_size_type amt; |
6785 | ||
983bddc8 | 6786 | new_contents = NULL; |
51aecdc5 | 6787 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 6788 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 6789 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
6790 | if (opd->adjust == NULL) |
6791 | return FALSE; | |
1e2f5b6e AM |
6792 | |
6793 | /* This seems a waste of time as input .opd sections are all | |
6794 | zeros as generated by gcc, but I suppose there's no reason | |
6795 | this will always be so. We might start putting something in | |
6796 | the third word of .opd entries. */ | |
6797 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6798 | { | |
eea6121a AM |
6799 | bfd_byte *loc; |
6800 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6801 | { |
eea6121a AM |
6802 | if (loc != NULL) |
6803 | free (loc); | |
50bc7936 | 6804 | error_ret: |
6cdc0ccc AM |
6805 | if (local_syms != NULL |
6806 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6807 | free (local_syms); | |
6cdc0ccc AM |
6808 | if (elf_section_data (sec)->relocs != relstart) |
6809 | free (relstart); | |
b34976b6 | 6810 | return FALSE; |
6cdc0ccc | 6811 | } |
1e2f5b6e AM |
6812 | sec->contents = loc; |
6813 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6814 | } | |
6815 | ||
6816 | elf_section_data (sec)->relocs = relstart; | |
6817 | ||
3f764659 | 6818 | new_contents = sec->contents; |
3f764659 JJ |
6819 | if (add_aux_fields) |
6820 | { | |
6821 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6822 | if (new_contents == NULL) | |
6823 | return FALSE; | |
51aecdc5 | 6824 | need_pad = NULL; |
3f764659 | 6825 | } |
b4f4e59f AM |
6826 | wptr = new_contents; |
6827 | rptr = sec->contents; | |
1e2f5b6e | 6828 | write_rel = relstart; |
51aecdc5 | 6829 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6830 | { |
50bc7936 AM |
6831 | unsigned long r_symndx; |
6832 | asection *sym_sec; | |
6833 | struct elf_link_hash_entry *h; | |
51aecdc5 | 6834 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 6835 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
6836 | long opd_ent_size; |
6837 | Elf_Internal_Rela *next_rel; | |
6838 | bfd_boolean skip; | |
50bc7936 AM |
6839 | |
6840 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6841 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6842 | r_symndx, ibfd)) |
50bc7936 AM |
6843 | goto error_ret; |
6844 | ||
51aecdc5 AM |
6845 | next_rel = rel + 2; |
6846 | if (next_rel + 1 == relend | |
6847 | || (next_rel + 2 < relend | |
6848 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
6849 | ++next_rel; | |
6850 | ||
6851 | /* See if the .opd entry is full 24 byte or | |
6852 | 16 byte (with fd_aux entry overlapped with next | |
6853 | fd_func). */ | |
6854 | opd_ent_size = 24; | |
6855 | if (next_rel == relend) | |
1e2f5b6e | 6856 | { |
51aecdc5 | 6857 | if (sec->size == rel->r_offset + 16) |
3f764659 | 6858 | opd_ent_size = 16; |
51aecdc5 AM |
6859 | } |
6860 | else if (next_rel->r_offset == rel->r_offset + 16) | |
6861 | opd_ent_size = 16; | |
3f764659 | 6862 | |
51aecdc5 AM |
6863 | if (h != NULL |
6864 | && h->root.root.string[0] == '.') | |
6865 | { | |
8c5b4e52 AM |
6866 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
6867 | if (fdh != NULL) | |
6868 | { | |
6869 | fdh = ppc_follow_link (fdh); | |
6870 | if (fdh->elf.root.type != bfd_link_hash_defined | |
6871 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6872 | fdh = NULL; | |
6873 | } | |
51aecdc5 | 6874 | } |
1e2f5b6e | 6875 | |
51aecdc5 AM |
6876 | skip = (sym_sec->owner != ibfd |
6877 | || sym_sec->output_section == bfd_abs_section_ptr); | |
6878 | if (skip) | |
6879 | { | |
6880 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 6881 | { |
51aecdc5 AM |
6882 | /* Arrange for the function descriptor sym |
6883 | to be dropped. */ | |
6884 | fdh->elf.root.u.def.value = 0; | |
6885 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6886 | } |
51aecdc5 | 6887 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 6888 | |
0e1862bb | 6889 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
6890 | rel = next_rel; |
6891 | else | |
6892 | while (1) | |
6893 | { | |
6894 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
6895 | NULL, h, sym)) | |
6896 | goto error_ret; | |
754021d0 | 6897 | |
51aecdc5 AM |
6898 | if (++rel == next_rel) |
6899 | break; | |
1e2f5b6e | 6900 | |
51aecdc5 AM |
6901 | r_symndx = ELF64_R_SYM (rel->r_info); |
6902 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
6903 | r_symndx, ibfd)) | |
6904 | goto error_ret; | |
6905 | } | |
50bc7936 AM |
6906 | } |
6907 | else | |
1e2f5b6e | 6908 | { |
51aecdc5 AM |
6909 | /* We'll be keeping this opd entry. */ |
6910 | long adjust; | |
6911 | ||
6912 | if (fdh != NULL) | |
6913 | { | |
6914 | /* Redefine the function descriptor symbol to | |
6915 | this location in the opd section. It is | |
6916 | necessary to update the value here rather | |
6917 | than using an array of adjustments as we do | |
6918 | for local symbols, because various places | |
6919 | in the generic ELF code use the value | |
6920 | stored in u.def.value. */ | |
6921 | fdh->elf.root.u.def.value = wptr - new_contents; | |
6922 | fdh->adjust_done = 1; | |
6923 | } | |
6924 | ||
6925 | /* Local syms are a bit tricky. We could | |
6926 | tweak them as they can be cached, but | |
6927 | we'd need to look through the local syms | |
6928 | for the function descriptor sym which we | |
6929 | don't have at the moment. So keep an | |
6930 | array of adjustments. */ | |
6931 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
6932 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
6933 | ||
6934 | if (wptr != rptr) | |
6935 | memcpy (wptr, rptr, opd_ent_size); | |
6936 | wptr += opd_ent_size; | |
6937 | if (add_aux_fields && opd_ent_size == 16) | |
6938 | { | |
6939 | memset (wptr, '\0', 8); | |
6940 | wptr += 8; | |
6941 | } | |
6942 | ||
50bc7936 | 6943 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
6944 | new opd entries. */ |
6945 | for ( ; rel != next_rel; ++rel) | |
6946 | { | |
6947 | rel->r_offset += adjust; | |
6948 | if (write_rel != rel) | |
6949 | memcpy (write_rel, rel, sizeof (*rel)); | |
6950 | ++write_rel; | |
6951 | } | |
1e2f5b6e | 6952 | } |
51aecdc5 AM |
6953 | |
6954 | rptr += opd_ent_size; | |
1e2f5b6e AM |
6955 | } |
6956 | ||
3f764659 | 6957 | sec->size = wptr - new_contents; |
1e2f5b6e | 6958 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6959 | if (add_aux_fields) |
6960 | { | |
6961 | free (sec->contents); | |
6962 | sec->contents = new_contents; | |
6963 | } | |
6964 | ||
05bf9422 | 6965 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 6966 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
6967 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
6968 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 6969 | some_edited = TRUE; |
1e2f5b6e | 6970 | } |
6cdc0ccc | 6971 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6972 | free (relstart); |
6cdc0ccc | 6973 | |
411e1bfb AM |
6974 | if (local_syms != NULL |
6975 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6976 | { | |
6977 | if (!info->keep_memory) | |
6978 | free (local_syms); | |
6979 | else | |
6980 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6981 | } | |
6982 | } | |
6983 | ||
754021d0 AM |
6984 | if (some_edited) |
6985 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6986 | ||
3f764659 JJ |
6987 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6988 | long, add a 8 byte padding after it. */ | |
0e1862bb | 6989 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
6990 | { |
6991 | bfd_byte *p; | |
6992 | ||
6993 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6994 | { | |
6995 | BFD_ASSERT (need_pad->size > 0); | |
6996 | ||
6997 | p = bfd_malloc (need_pad->size + 8); | |
6998 | if (p == NULL) | |
6999 | return FALSE; | |
699733f6 | 7000 | |
2cdcc330 AM |
7001 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7002 | p, 0, need_pad->size)) | |
3f764659 JJ |
7003 | return FALSE; |
7004 | ||
7005 | need_pad->contents = p; | |
7006 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7007 | } | |
7008 | else | |
7009 | { | |
7010 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7011 | if (p == NULL) | |
7012 | return FALSE; | |
7013 | ||
7014 | need_pad->contents = p; | |
7015 | } | |
7016 | ||
7017 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7018 | need_pad->size += 8; | |
7019 | } | |
7020 | ||
411e1bfb AM |
7021 | return TRUE; |
7022 | } | |
7023 | ||
3e04d765 AM |
7024 | /* Analyze inline PLT call relocations to see whether calls to locally |
7025 | defined functions can be converted to direct calls. */ | |
7026 | ||
7027 | bfd_boolean | |
7028 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7029 | { | |
7030 | struct ppc_link_hash_table *htab; | |
7031 | bfd *ibfd; | |
7032 | asection *sec; | |
7033 | bfd_vma low_vma, high_vma, limit; | |
7034 | ||
7035 | htab = ppc_hash_table (info); | |
7036 | if (htab == NULL) | |
7037 | return FALSE; | |
7038 | ||
7039 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7040 | reduced somewhat to cater for possible stubs that might be added | |
7041 | between the call and its destination. */ | |
7042 | if (htab->params->group_size < 0) | |
7043 | { | |
7044 | limit = -htab->params->group_size; | |
7045 | if (limit == 1) | |
7046 | limit = 0x1e00000; | |
7047 | } | |
7048 | else | |
7049 | { | |
7050 | limit = htab->params->group_size; | |
7051 | if (limit == 1) | |
7052 | limit = 0x1c00000; | |
7053 | } | |
7054 | ||
7055 | low_vma = -1; | |
7056 | high_vma = 0; | |
7057 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7058 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7059 | { | |
7060 | if (low_vma > sec->vma) | |
7061 | low_vma = sec->vma; | |
7062 | if (high_vma < sec->vma + sec->size) | |
7063 | high_vma = sec->vma + sec->size; | |
7064 | } | |
7065 | ||
7066 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7067 | convert all inline PLT sequences to direct calls when the symbol | |
7068 | is local. */ | |
7069 | if (high_vma - low_vma < limit) | |
7070 | { | |
7071 | htab->can_convert_all_inline_plt = 1; | |
7072 | return TRUE; | |
7073 | } | |
7074 | ||
7075 | /* Otherwise, go looking through relocs for cases where a direct | |
7076 | call won't reach. Mark the symbol on any such reloc to disable | |
7077 | the optimization and keep the PLT entry as it seems likely that | |
7078 | this will be better than creating trampolines. Note that this | |
7079 | will disable the optimization for all inline PLT calls to a | |
7080 | particular symbol, not just those that won't reach. The | |
7081 | difficulty in doing a more precise optimization is that the | |
7082 | linker needs to make a decision depending on whether a | |
7083 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7084 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7085 | the sequence, and there is nothing that ties those relocs | |
7086 | together except their symbol. */ | |
7087 | ||
7088 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7089 | { | |
7090 | Elf_Internal_Shdr *symtab_hdr; | |
7091 | Elf_Internal_Sym *local_syms; | |
7092 | ||
7093 | if (!is_ppc64_elf (ibfd)) | |
7094 | continue; | |
7095 | ||
7096 | local_syms = NULL; | |
7097 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7098 | ||
7099 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7100 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7101 | && !bfd_is_abs_section (sec->output_section)) | |
7102 | { | |
7103 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7104 | ||
7105 | /* Read the relocations. */ | |
7106 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7107 | info->keep_memory); | |
7108 | if (relstart == NULL) | |
7109 | return FALSE; | |
7110 | ||
7111 | relend = relstart + sec->reloc_count; | |
7112 | for (rel = relstart; rel < relend; ) | |
7113 | { | |
7114 | enum elf_ppc64_reloc_type r_type; | |
7115 | unsigned long r_symndx; | |
7116 | asection *sym_sec; | |
7117 | struct elf_link_hash_entry *h; | |
7118 | Elf_Internal_Sym *sym; | |
7119 | unsigned char *tls_maskp; | |
7120 | ||
7121 | r_type = ELF64_R_TYPE (rel->r_info); | |
7122 | if (r_type != R_PPC64_PLTCALL) | |
7123 | continue; | |
7124 | ||
7125 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7126 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7127 | r_symndx, ibfd)) | |
7128 | { | |
7129 | if (elf_section_data (sec)->relocs != relstart) | |
7130 | free (relstart); | |
7131 | if (local_syms != NULL | |
2cdcc330 | 7132 | && symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7133 | free (local_syms); |
7134 | return FALSE; | |
7135 | } | |
7136 | ||
7137 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7138 | { | |
7139 | bfd_vma from, to; | |
7140 | if (h != NULL) | |
7141 | to = h->root.u.def.value; | |
7142 | else | |
7143 | to = sym->st_value; | |
7144 | to += (rel->r_addend | |
7145 | + sym_sec->output_offset | |
7146 | + sym_sec->output_section->vma); | |
7147 | from = (rel->r_offset | |
7148 | + sec->output_offset | |
7149 | + sec->output_section->vma); | |
7150 | if (to - from + limit < 2 * limit) | |
7151 | *tls_maskp &= ~PLT_KEEP; | |
7152 | } | |
7153 | } | |
7154 | if (elf_section_data (sec)->relocs != relstart) | |
7155 | free (relstart); | |
7156 | } | |
7157 | ||
7158 | if (local_syms != NULL | |
7159 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7160 | { | |
7161 | if (!info->keep_memory) | |
7162 | free (local_syms); | |
7163 | else | |
7164 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7165 | } | |
7166 | } | |
7167 | ||
7168 | return TRUE; | |
7169 | } | |
7170 | ||
e1918d23 | 7171 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7172 | |
e1918d23 | 7173 | asection * |
e7d1c40c | 7174 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7175 | { |
411e1bfb AM |
7176 | struct ppc_link_hash_table *htab; |
7177 | ||
411e1bfb | 7178 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7179 | if (htab == NULL) |
7180 | return NULL; | |
7181 | ||
ee67d69a AM |
7182 | if (abiversion (info->output_bfd) == 1) |
7183 | htab->opd_abi = 1; | |
7184 | ||
e7d1c40c | 7185 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7186 | htab->do_multi_toc = 0; |
7187 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7188 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7189 | |
8b5f1ed8 AM |
7190 | /* Default to --no-plt-localentry, as this option can cause problems |
7191 | with symbol interposition. For example, glibc libpthread.so and | |
7192 | libc.so duplicate many pthread symbols, with a fallback | |
7193 | implementation in libc.so. In some cases the fallback does more | |
7194 | work than the pthread implementation. __pthread_condattr_destroy | |
7195 | is one such symbol: the libpthread.so implementation is | |
7196 | localentry:0 while the libc.so implementation is localentry:8. | |
7197 | An app that "cleverly" uses dlopen to only load necessary | |
7198 | libraries at runtime may omit loading libpthread.so when not | |
7199 | running multi-threaded, which then results in the libc.so | |
7200 | fallback symbols being used and ld.so complaining. Now there | |
7201 | are workarounds in ld (see non_zero_localentry) to detect the | |
7202 | pthread situation, but that may not be the only case where | |
7203 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7204 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7205 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
7206 | if (htab->params->plt_localentry0 |
7207 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7208 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7209 | _bfd_error_handler |
7210 | (_("warning: --plt-localentry is especially dangerous without " | |
7211 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7212 | |
3a71aa26 AM |
7213 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7214 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7215 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7216 | /* Move dynamic linking info to the function descriptor sym. */ |
7217 | if (htab->tls_get_addr != NULL) | |
7218 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7219 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7220 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7221 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 7222 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
7223 | { |
7224 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7225 | ||
7226 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7227 | FALSE, FALSE, TRUE); | |
7228 | if (opt != NULL) | |
7229 | func_desc_adjust (opt, info); | |
7230 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7231 | FALSE, FALSE, TRUE); | |
7232 | if (opt_fd != NULL | |
7233 | && (opt_fd->root.type == bfd_link_hash_defined | |
7234 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7235 | { | |
7236 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7237 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7238 | be calling __tls_get_addr via a plt call stub, then | |
7239 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7240 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7241 | if (htab->elf.dynamic_sections_created | |
7242 | && tga_fd != NULL | |
7243 | && (tga_fd->type == STT_FUNC | |
7244 | || tga_fd->needs_plt) | |
7245 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 7246 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
7247 | { |
7248 | struct plt_entry *ent; | |
7249 | ||
7250 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7251 | if (ent->plt.refcount > 0) | |
7252 | break; | |
7253 | if (ent != NULL) | |
7254 | { | |
7255 | tga_fd->root.type = bfd_link_hash_indirect; | |
7256 | tga_fd->root.u.i.link = &opt_fd->root; | |
7257 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 7258 | opt_fd->mark = 1; |
a7f2871e AM |
7259 | if (opt_fd->dynindx != -1) |
7260 | { | |
7261 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7262 | opt_fd->dynindx = -1; | |
7263 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7264 | opt_fd->dynstr_index); | |
7265 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7266 | return NULL; |
a7f2871e | 7267 | } |
2cdcc330 AM |
7268 | htab->tls_get_addr_fd |
7269 | = (struct ppc_link_hash_entry *) opt_fd; | |
a7f2871e AM |
7270 | tga = &htab->tls_get_addr->elf; |
7271 | if (opt != NULL && tga != NULL) | |
7272 | { | |
7273 | tga->root.type = bfd_link_hash_indirect; | |
7274 | tga->root.u.i.link = &opt->root; | |
7275 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 7276 | opt->mark = 1; |
a7f2871e AM |
7277 | _bfd_elf_link_hash_hide_symbol (info, opt, |
7278 | tga->forced_local); | |
7279 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7280 | } | |
7281 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7282 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7283 | if (htab->tls_get_addr != NULL) | |
7284 | { | |
7285 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7286 | htab->tls_get_addr->is_func = 1; | |
7287 | } | |
7288 | } | |
7289 | } | |
7290 | } | |
7c9cf415 AM |
7291 | else if (htab->params->tls_get_addr_opt < 0) |
7292 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7293 | } |
33c0ec9d | 7294 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7295 | } |
8387904d | 7296 | |
3a71aa26 AM |
7297 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7298 | HASH1 or HASH2. */ | |
8387904d | 7299 | |
3a71aa26 AM |
7300 | static bfd_boolean |
7301 | branch_reloc_hash_match (const bfd *ibfd, | |
7302 | const Elf_Internal_Rela *rel, | |
7303 | const struct ppc_link_hash_entry *hash1, | |
7304 | const struct ppc_link_hash_entry *hash2) | |
7305 | { | |
7306 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7307 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7308 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7309 | ||
e054468f | 7310 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7311 | { |
3a71aa26 AM |
7312 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7313 | struct elf_link_hash_entry *h; | |
8387904d | 7314 | |
3a71aa26 | 7315 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7316 | h = elf_follow_link (h); |
3a71aa26 AM |
7317 | if (h == &hash1->elf || h == &hash2->elf) |
7318 | return TRUE; | |
a48ebf4d | 7319 | } |
3a71aa26 | 7320 | return FALSE; |
951fd09b | 7321 | } |
411e1bfb | 7322 | |
951fd09b AM |
7323 | /* Run through all the TLS relocs looking for optimization |
7324 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7325 | a preliminary section layout so that we know the TLS segment | |
7326 | offsets. We can't optimize earlier because some optimizations need | |
7327 | to know the tp offset, and we need to optimize before allocating | |
7328 | dynamic relocations. */ | |
7329 | ||
7330 | bfd_boolean | |
33c0ec9d | 7331 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7332 | { |
7333 | bfd *ibfd; | |
7334 | asection *sec; | |
7335 | struct ppc_link_hash_table *htab; | |
663a1470 | 7336 | unsigned char *toc_ref; |
102890f0 | 7337 | int pass; |
951fd09b | 7338 | |
3cbc1e5e | 7339 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7340 | return TRUE; |
7341 | ||
951fd09b | 7342 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7343 | if (htab == NULL) |
7344 | return FALSE; | |
7345 | ||
663a1470 AM |
7346 | /* Make two passes over the relocs. On the first pass, mark toc |
7347 | entries involved with tls relocs, and check that tls relocs | |
7348 | involved in setting up a tls_get_addr call are indeed followed by | |
7349 | such a call. If they are not, we can't do any tls optimization. | |
7350 | On the second pass twiddle tls_mask flags to notify | |
7351 | relocate_section that optimization can be done, and adjust got | |
7352 | and plt refcounts. */ | |
7353 | toc_ref = NULL; | |
7354 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7355 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7356 | { |
7357 | Elf_Internal_Sym *locsyms = NULL; | |
7358 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7359 | ||
102890f0 AM |
7360 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7361 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7362 | { | |
7363 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7364 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7365 | |
102890f0 AM |
7366 | /* Read the relocations. */ |
7367 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7368 | info->keep_memory); | |
7369 | if (relstart == NULL) | |
2915c55b JK |
7370 | { |
7371 | free (toc_ref); | |
7372 | return FALSE; | |
7373 | } | |
411e1bfb | 7374 | |
102890f0 AM |
7375 | relend = relstart + sec->reloc_count; |
7376 | for (rel = relstart; rel < relend; rel++) | |
7377 | { | |
7378 | enum elf_ppc64_reloc_type r_type; | |
7379 | unsigned long r_symndx; | |
7380 | struct elf_link_hash_entry *h; | |
7381 | Elf_Internal_Sym *sym; | |
7382 | asection *sym_sec; | |
f961d9dd AM |
7383 | unsigned char *tls_mask; |
7384 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
7385 | bfd_vma value; |
7386 | bfd_boolean ok_tprel, is_local; | |
7387 | long toc_ref_index = 0; | |
7388 | int expecting_tls_get_addr = 0; | |
663a1470 | 7389 | bfd_boolean ret = FALSE; |
411e1bfb | 7390 | |
102890f0 AM |
7391 | r_symndx = ELF64_R_SYM (rel->r_info); |
7392 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7393 | r_symndx, ibfd)) | |
7394 | { | |
7395 | err_free_rel: | |
7396 | if (elf_section_data (sec)->relocs != relstart) | |
7397 | free (relstart); | |
7398 | if (toc_ref != NULL) | |
7399 | free (toc_ref); | |
7400 | if (locsyms != NULL | |
0ffa91dd | 7401 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7402 | != (unsigned char *) locsyms)) |
7403 | free (locsyms); | |
663a1470 | 7404 | return ret; |
102890f0 | 7405 | } |
411e1bfb | 7406 | |
102890f0 AM |
7407 | if (h != NULL) |
7408 | { | |
766bc656 AM |
7409 | if (h->root.type == bfd_link_hash_defined |
7410 | || h->root.type == bfd_link_hash_defweak) | |
7411 | value = h->root.u.def.value; | |
7412 | else if (h->root.type == bfd_link_hash_undefweak) | |
7413 | value = 0; | |
7414 | else | |
663a1470 AM |
7415 | { |
7416 | found_tls_get_addr_arg = 0; | |
7417 | continue; | |
7418 | } | |
102890f0 AM |
7419 | } |
7420 | else | |
7421 | /* Symbols referenced by TLS relocs must be of type | |
7422 | STT_TLS. So no need for .opd local sym adjust. */ | |
7423 | value = sym->st_value; | |
7424 | ||
7425 | ok_tprel = FALSE; | |
7426 | is_local = FALSE; | |
7427 | if (h == NULL | |
7428 | || !h->def_dynamic) | |
7429 | { | |
7430 | is_local = TRUE; | |
766bc656 AM |
7431 | if (h != NULL |
7432 | && h->root.type == bfd_link_hash_undefweak) | |
7433 | ok_tprel = TRUE; | |
c27b8c2a AM |
7434 | else if (sym_sec != NULL |
7435 | && sym_sec->output_section != NULL) | |
766bc656 AM |
7436 | { |
7437 | value += sym_sec->output_offset; | |
7438 | value += sym_sec->output_section->vma; | |
7439 | value -= htab->elf.tls_sec->vma; | |
7440 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7441 | < (bfd_vma) 1 << 32); | |
7442 | } | |
102890f0 | 7443 | } |
951fd09b | 7444 | |
102890f0 | 7445 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
7446 | /* If this section has old-style __tls_get_addr calls |
7447 | without marker relocs, then check that each | |
7448 | __tls_get_addr call reloc is preceded by a reloc | |
7449 | that conceivably belongs to the __tls_get_addr arg | |
7450 | setup insn. If we don't find matching arg setup | |
7451 | relocs, don't do any tls optimization. */ | |
7452 | if (pass == 0 | |
7453 | && sec->has_tls_get_addr_call | |
7454 | && h != NULL | |
7455 | && (h == &htab->tls_get_addr->elf | |
7456 | || h == &htab->tls_get_addr_fd->elf) | |
7457 | && !found_tls_get_addr_arg | |
7458 | && is_branch_reloc (r_type)) | |
7459 | { | |
25f53a85 | 7460 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
7461 | "TLS optimization disabled\n"), |
7462 | ibfd, sec, rel->r_offset); | |
7463 | ret = TRUE; | |
7464 | goto err_free_rel; | |
7465 | } | |
7466 | ||
7467 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
7468 | switch (r_type) |
7469 | { | |
7470 | case R_PPC64_GOT_TLSLD16: | |
7471 | case R_PPC64_GOT_TLSLD16_LO: | |
7472 | expecting_tls_get_addr = 1; | |
663a1470 | 7473 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7474 | /* Fall through. */ |
102890f0 AM |
7475 | |
7476 | case R_PPC64_GOT_TLSLD16_HI: | |
7477 | case R_PPC64_GOT_TLSLD16_HA: | |
7478 | /* These relocs should never be against a symbol | |
7479 | defined in a shared lib. Leave them alone if | |
7480 | that turns out to be the case. */ | |
7481 | if (!is_local) | |
7482 | continue; | |
411e1bfb | 7483 | |
102890f0 | 7484 | /* LD -> LE */ |
411e1bfb | 7485 | tls_set = 0; |
102890f0 AM |
7486 | tls_clear = TLS_LD; |
7487 | tls_type = TLS_TLS | TLS_LD; | |
7488 | break; | |
411e1bfb | 7489 | |
102890f0 AM |
7490 | case R_PPC64_GOT_TLSGD16: |
7491 | case R_PPC64_GOT_TLSGD16_LO: | |
7492 | expecting_tls_get_addr = 1; | |
663a1470 | 7493 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7494 | /* Fall through. */ |
102890f0 AM |
7495 | |
7496 | case R_PPC64_GOT_TLSGD16_HI: | |
7497 | case R_PPC64_GOT_TLSGD16_HA: | |
7498 | if (ok_tprel) | |
7499 | /* GD -> LE */ | |
411e1bfb | 7500 | tls_set = 0; |
102890f0 AM |
7501 | else |
7502 | /* GD -> IE */ | |
7503 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7504 | tls_clear = TLS_GD; | |
7505 | tls_type = TLS_TLS | TLS_GD; | |
7506 | break; | |
7507 | ||
7508 | case R_PPC64_GOT_TPREL16_DS: | |
7509 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7510 | case R_PPC64_GOT_TPREL16_HI: | |
7511 | case R_PPC64_GOT_TPREL16_HA: | |
7512 | if (ok_tprel) | |
7513 | { | |
7514 | /* IE -> LE */ | |
7515 | tls_set = 0; | |
7516 | tls_clear = TLS_TPREL; | |
7517 | tls_type = TLS_TLS | TLS_TPREL; | |
7518 | break; | |
7519 | } | |
411e1bfb AM |
7520 | continue; |
7521 | ||
727fc41e AM |
7522 | case R_PPC64_TLSGD: |
7523 | case R_PPC64_TLSLD: | |
23cedd1d AM |
7524 | if (rel + 1 < relend |
7525 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
7526 | { | |
7527 | if (pass != 0 | |
2cdcc330 AM |
7528 | && (ELF64_R_TYPE (rel[1].r_info) |
7529 | != R_PPC64_PLTSEQ)) | |
23cedd1d AM |
7530 | { |
7531 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
7532 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 7533 | r_symndx, ibfd)) |
23cedd1d AM |
7534 | goto err_free_rel; |
7535 | if (h != NULL) | |
7536 | { | |
7537 | struct plt_entry *ent = NULL; | |
7538 | ||
7539 | for (ent = h->plt.plist; | |
7540 | ent != NULL; | |
7541 | ent = ent->next) | |
7542 | if (ent->addend == rel[1].r_addend) | |
7543 | break; | |
7544 | ||
7545 | if (ent != NULL | |
7546 | && ent->plt.refcount > 0) | |
7547 | ent->plt.refcount -= 1; | |
7548 | } | |
7549 | } | |
7550 | continue; | |
7551 | } | |
663a1470 | 7552 | found_tls_get_addr_arg = 1; |
1a0670f3 | 7553 | /* Fall through. */ |
663a1470 AM |
7554 | |
7555 | case R_PPC64_TLS: | |
7556 | case R_PPC64_TOC16: | |
7557 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
7558 | if (sym_sec == NULL || sym_sec != toc) |
7559 | continue; | |
7560 | ||
7561 | /* Mark this toc entry as referenced by a TLS | |
7562 | code sequence. We can do that now in the | |
7563 | case of R_PPC64_TLS, and after checking for | |
7564 | tls_get_addr for the TOC16 relocs. */ | |
7565 | if (toc_ref == NULL) | |
2cdcc330 AM |
7566 | toc_ref |
7567 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
7568 | if (toc_ref == NULL) |
7569 | goto err_free_rel; | |
7570 | ||
102890f0 AM |
7571 | if (h != NULL) |
7572 | value = h->root.u.def.value; | |
7573 | else | |
7574 | value = sym->st_value; | |
7575 | value += rel->r_addend; | |
73242275 AM |
7576 | if (value % 8 != 0) |
7577 | continue; | |
7578 | BFD_ASSERT (value < toc->size | |
7579 | && toc->output_offset % 8 == 0); | |
663a1470 | 7580 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
7581 | if (r_type == R_PPC64_TLS |
7582 | || r_type == R_PPC64_TLSGD | |
7583 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7584 | { |
7585 | toc_ref[toc_ref_index] = 1; | |
7586 | continue; | |
7587 | } | |
7588 | ||
7589 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7590 | continue; | |
7591 | ||
7592 | tls_set = 0; | |
7593 | tls_clear = 0; | |
7594 | expecting_tls_get_addr = 2; | |
7595 | break; | |
7596 | ||
7597 | case R_PPC64_TPREL64: | |
7598 | if (pass == 0 | |
7599 | || sec != toc | |
7600 | || toc_ref == NULL | |
663a1470 | 7601 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7602 | continue; |
7603 | if (ok_tprel) | |
7604 | { | |
7605 | /* IE -> LE */ | |
7606 | tls_set = TLS_EXPLICIT; | |
7607 | tls_clear = TLS_TPREL; | |
7608 | break; | |
7609 | } | |
7610 | continue; | |
7611 | ||
7612 | case R_PPC64_DTPMOD64: | |
7613 | if (pass == 0 | |
7614 | || sec != toc | |
7615 | || toc_ref == NULL | |
663a1470 | 7616 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7617 | continue; |
7618 | if (rel + 1 < relend | |
7619 | && (rel[1].r_info | |
7620 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7621 | && rel[1].r_offset == rel->r_offset + 8) | |
7622 | { | |
7623 | if (ok_tprel) | |
7624 | /* GD -> LE */ | |
7625 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7626 | else | |
7627 | /* GD -> IE */ | |
7628 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7629 | tls_clear = TLS_GD; | |
7630 | } | |
7631 | else | |
7632 | { | |
7633 | if (!is_local) | |
7634 | continue; | |
7635 | ||
7636 | /* LD -> LE */ | |
7637 | tls_set = TLS_EXPLICIT; | |
7638 | tls_clear = TLS_LD; | |
7639 | } | |
7640 | break; | |
7641 | ||
7642 | default: | |
7643 | continue; | |
7644 | } | |
7645 | ||
7646 | if (pass == 0) | |
7647 | { | |
727fc41e AM |
7648 | if (!expecting_tls_get_addr |
7649 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7650 | continue; |
7651 | ||
3a71aa26 AM |
7652 | if (rel + 1 < relend |
7653 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7654 | htab->tls_get_addr, | |
7655 | htab->tls_get_addr_fd)) | |
102890f0 | 7656 | { |
3a71aa26 | 7657 | if (expecting_tls_get_addr == 2) |
102890f0 | 7658 | { |
3a71aa26 | 7659 | /* Check for toc tls entries. */ |
f961d9dd | 7660 | unsigned char *toc_tls; |
3a71aa26 AM |
7661 | int retval; |
7662 | ||
7663 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7664 | &locsyms, | |
7665 | rel, ibfd); | |
7666 | if (retval == 0) | |
7667 | goto err_free_rel; | |
663a1470 AM |
7668 | if (toc_tls != NULL) |
7669 | { | |
37da22e5 AM |
7670 | if ((*toc_tls & TLS_TLS) != 0 |
7671 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
7672 | found_tls_get_addr_arg = 1; |
7673 | if (retval > 1) | |
7674 | toc_ref[toc_ref_index] = 1; | |
7675 | } | |
102890f0 | 7676 | } |
3a71aa26 | 7677 | continue; |
102890f0 AM |
7678 | } |
7679 | ||
102890f0 AM |
7680 | /* Uh oh, we didn't find the expected call. We |
7681 | could just mark this symbol to exclude it | |
7682 | from tls optimization but it's safer to skip | |
663a1470 | 7683 | the entire optimization. */ |
695344c0 | 7684 | /* xgettext:c-format */ |
25f53a85 | 7685 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
7686 | "TLS optimization disabled\n"), |
7687 | ibfd, sec, rel->r_offset); | |
7688 | ret = TRUE; | |
7689 | goto err_free_rel; | |
102890f0 AM |
7690 | } |
7691 | ||
37da22e5 AM |
7692 | /* If we don't have old-style __tls_get_addr calls |
7693 | without TLSGD/TLSLD marker relocs, and we haven't | |
7694 | found a new-style __tls_get_addr call with a | |
7695 | marker for this symbol, then we either have a | |
7696 | broken object file or an -mlongcall style | |
7697 | indirect call to __tls_get_addr without a marker. | |
7698 | Disable optimization in this case. */ | |
7699 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
7700 | && (tls_set & TLS_EXPLICIT) == 0 | |
7701 | && !sec->has_tls_get_addr_call | |
7702 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
7703 | != (TLS_TLS | TLS_MARK))) | |
7704 | continue; | |
7705 | ||
23cedd1d | 7706 | if (expecting_tls_get_addr) |
102890f0 | 7707 | { |
23cedd1d AM |
7708 | struct plt_entry *ent = NULL; |
7709 | ||
7710 | if (htab->tls_get_addr != NULL) | |
7711 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7712 | ent != NULL; | |
7713 | ent = ent->next) | |
7714 | if (ent->addend == 0) | |
102890f0 | 7715 | break; |
411e1bfb | 7716 | |
23cedd1d AM |
7717 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
7718 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7719 | ent != NULL; | |
7720 | ent = ent->next) | |
7721 | if (ent->addend == 0) | |
102890f0 | 7722 | break; |
23cedd1d AM |
7723 | |
7724 | if (ent != NULL | |
7725 | && ent->plt.refcount > 0) | |
7726 | ent->plt.refcount -= 1; | |
102890f0 | 7727 | } |
411e1bfb | 7728 | |
102890f0 | 7729 | if (tls_clear == 0) |
30038c59 AM |
7730 | continue; |
7731 | ||
102890f0 AM |
7732 | if ((tls_set & TLS_EXPLICIT) == 0) |
7733 | { | |
7734 | struct got_entry *ent; | |
411e1bfb | 7735 | |
102890f0 AM |
7736 | /* Adjust got entry for this reloc. */ |
7737 | if (h != NULL) | |
7738 | ent = h->got.glist; | |
7739 | else | |
7740 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7741 | |
102890f0 AM |
7742 | for (; ent != NULL; ent = ent->next) |
7743 | if (ent->addend == rel->r_addend | |
7744 | && ent->owner == ibfd | |
7745 | && ent->tls_type == tls_type) | |
7746 | break; | |
7747 | if (ent == NULL) | |
7748 | abort (); | |
411e1bfb | 7749 | |
102890f0 AM |
7750 | if (tls_set == 0) |
7751 | { | |
7752 | /* We managed to get rid of a got entry. */ | |
7753 | if (ent->got.refcount > 0) | |
7754 | ent->got.refcount -= 1; | |
7755 | } | |
7756 | } | |
7757 | else | |
7758 | { | |
7759 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7760 | we'll lose one or two dyn relocs. */ | |
7761 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 7762 | NULL, h, sym)) |
102890f0 | 7763 | return FALSE; |
411e1bfb | 7764 | |
102890f0 AM |
7765 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7766 | { | |
7767 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 7768 | NULL, h, sym)) |
102890f0 AM |
7769 | return FALSE; |
7770 | } | |
7771 | } | |
411e1bfb | 7772 | |
102890f0 AM |
7773 | *tls_mask |= tls_set; |
7774 | *tls_mask &= ~tls_clear; | |
7775 | } | |
8c1d1bb8 | 7776 | |
102890f0 AM |
7777 | if (elf_section_data (sec)->relocs != relstart) |
7778 | free (relstart); | |
7779 | } | |
411e1bfb | 7780 | |
663a1470 AM |
7781 | if (locsyms != NULL |
7782 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
7783 | { | |
7784 | if (!info->keep_memory) | |
7785 | free (locsyms); | |
7786 | else | |
7787 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
7788 | } | |
7789 | } | |
411e1bfb | 7790 | |
663a1470 AM |
7791 | if (toc_ref != NULL) |
7792 | free (toc_ref); | |
9a23f96e | 7793 | htab->do_tls_opt = 1; |
b34976b6 | 7794 | return TRUE; |
1e2f5b6e | 7795 | } |
b34976b6 | 7796 | |
c5614fa4 AM |
7797 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7798 | the values of any global symbols in a toc section that has been | |
7799 | edited. Globals in toc sections should be a rarity, so this function | |
7800 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 7801 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
7802 | |
7803 | struct adjust_toc_info | |
7804 | { | |
7805 | asection *toc; | |
7806 | unsigned long *skip; | |
7807 | bfd_boolean global_toc_syms; | |
7808 | }; | |
7809 | ||
ba761f19 AM |
7810 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
7811 | ||
c5614fa4 AM |
7812 | static bfd_boolean |
7813 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7814 | { | |
7815 | struct ppc_link_hash_entry *eh; | |
7816 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 7817 | unsigned long i; |
c5614fa4 | 7818 | |
c5614fa4 AM |
7819 | if (h->root.type != bfd_link_hash_defined |
7820 | && h->root.type != bfd_link_hash_defweak) | |
7821 | return TRUE; | |
7822 | ||
7823 | eh = (struct ppc_link_hash_entry *) h; | |
7824 | if (eh->adjust_done) | |
7825 | return TRUE; | |
7826 | ||
7827 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7828 | { | |
854b41e7 AM |
7829 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
7830 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 7831 | else |
854b41e7 AM |
7832 | i = eh->elf.root.u.def.value >> 3; |
7833 | ||
ba761f19 | 7834 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 7835 | { |
4eca0228 | 7836 | _bfd_error_handler |
854b41e7 AM |
7837 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
7838 | do | |
7839 | ++i; | |
ba761f19 | 7840 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 7841 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 7842 | } |
854b41e7 AM |
7843 | |
7844 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
7845 | eh->adjust_done = 1; |
7846 | } | |
7847 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7848 | toc_inf->global_toc_syms = TRUE; | |
7849 | ||
7850 | return TRUE; | |
7851 | } | |
7852 | ||
39eeab25 AM |
7853 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
7854 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
7855 | |
7856 | static bfd_boolean | |
39eeab25 | 7857 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 7858 | { |
39eeab25 AM |
7859 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
7860 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
7861 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
7862 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7863 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7864 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7865 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7866 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7867 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7868 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7869 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7870 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7871 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7872 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7873 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
7874 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
7875 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
7876 | /* Exclude lfqu by testing reloc. If relocs are ever | |
7877 | defined for the reduced D field in psq_lu then those | |
7878 | will need testing too. */ | |
7879 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
7880 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
7881 | && (insn & 1) == 0) | |
7882 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
7883 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
7884 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
7885 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
7886 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
7887 | && (insn & 1) == 0)); | |
560c8763 AM |
7888 | } |
7889 | ||
c5614fa4 AM |
7890 | /* Examine all relocs referencing .toc sections in order to remove |
7891 | unused .toc entries. */ | |
7892 | ||
7893 | bfd_boolean | |
33c0ec9d | 7894 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
7895 | { |
7896 | bfd *ibfd; | |
7897 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 7898 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 7899 | |
67f0cbdb | 7900 | htab->do_toc_opt = 1; |
c5614fa4 | 7901 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 7902 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
7903 | { |
7904 | asection *toc, *sec; | |
7905 | Elf_Internal_Shdr *symtab_hdr; | |
7906 | Elf_Internal_Sym *local_syms; | |
425b145b | 7907 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
7908 | unsigned long *skip, *drop; |
7909 | unsigned char *used; | |
7910 | unsigned char *keep, last, some_unused; | |
7911 | ||
854b41e7 AM |
7912 | if (!is_ppc64_elf (ibfd)) |
7913 | continue; | |
7914 | ||
c5614fa4 AM |
7915 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
7916 | if (toc == NULL | |
92b7a70f | 7917 | || toc->size == 0 |
dbaa2011 AM |
7918 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
7919 | || discarded_section (toc)) | |
c5614fa4 AM |
7920 | continue; |
7921 | ||
425b145b | 7922 | toc_relocs = NULL; |
c5614fa4 | 7923 | local_syms = NULL; |
0ffa91dd | 7924 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7925 | |
7926 | /* Look at sections dropped from the final link. */ | |
7927 | skip = NULL; | |
7928 | relstart = NULL; | |
7929 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7930 | { | |
7931 | if (sec->reloc_count == 0 | |
dbaa2011 | 7932 | || !discarded_section (sec) |
c5614fa4 AM |
7933 | || get_opd_info (sec) |
7934 | || (sec->flags & SEC_ALLOC) == 0 | |
7935 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7936 | continue; | |
7937 | ||
7938 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7939 | if (relstart == NULL) | |
7940 | goto error_ret; | |
7941 | ||
7942 | /* Run through the relocs to see which toc entries might be | |
7943 | unused. */ | |
7944 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7945 | { | |
7946 | enum elf_ppc64_reloc_type r_type; | |
7947 | unsigned long r_symndx; | |
7948 | asection *sym_sec; | |
7949 | struct elf_link_hash_entry *h; | |
7950 | Elf_Internal_Sym *sym; | |
7951 | bfd_vma val; | |
7952 | ||
7953 | r_type = ELF64_R_TYPE (rel->r_info); | |
7954 | switch (r_type) | |
7955 | { | |
7956 | default: | |
7957 | continue; | |
7958 | ||
7959 | case R_PPC64_TOC16: | |
7960 | case R_PPC64_TOC16_LO: | |
7961 | case R_PPC64_TOC16_HI: | |
7962 | case R_PPC64_TOC16_HA: | |
7963 | case R_PPC64_TOC16_DS: | |
7964 | case R_PPC64_TOC16_LO_DS: | |
7965 | break; | |
7966 | } | |
7967 | ||
7968 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7969 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7970 | r_symndx, ibfd)) | |
7971 | goto error_ret; | |
7972 | ||
7973 | if (sym_sec != toc) | |
7974 | continue; | |
7975 | ||
7976 | if (h != NULL) | |
7977 | val = h->root.u.def.value; | |
7978 | else | |
7979 | val = sym->st_value; | |
7980 | val += rel->r_addend; | |
7981 | ||
7982 | if (val >= toc->size) | |
7983 | continue; | |
7984 | ||
7985 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7986 | If not, don't mark as unused. */ | |
7987 | if (val & 7) | |
7988 | continue; | |
7989 | ||
7990 | if (skip == NULL) | |
7991 | { | |
854b41e7 | 7992 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
7993 | if (skip == NULL) |
7994 | goto error_ret; | |
7995 | } | |
7996 | ||
ba761f19 | 7997 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
7998 | } |
7999 | ||
8000 | if (elf_section_data (sec)->relocs != relstart) | |
8001 | free (relstart); | |
8002 | } | |
8003 | ||
ba761f19 AM |
8004 | /* For largetoc loads of address constants, we can convert |
8005 | . addis rx,2,addr@got@ha | |
8006 | . ld ry,addr@got@l(rx) | |
8007 | to | |
8008 | . addis rx,2,addr@toc@ha | |
8009 | . addi ry,rx,addr@toc@l | |
8010 | when addr is within 2G of the toc pointer. This then means | |
8011 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8012 | |
ba761f19 AM |
8013 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8014 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8015 | && toc->reloc_count != 0) | |
8016 | { | |
8017 | /* Read toc relocs. */ | |
425b145b AM |
8018 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8019 | info->keep_memory); | |
8020 | if (toc_relocs == NULL) | |
ba761f19 AM |
8021 | goto error_ret; |
8022 | ||
425b145b | 8023 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8024 | { |
8025 | enum elf_ppc64_reloc_type r_type; | |
8026 | unsigned long r_symndx; | |
8027 | asection *sym_sec; | |
8028 | struct elf_link_hash_entry *h; | |
8029 | Elf_Internal_Sym *sym; | |
8030 | bfd_vma val, addr; | |
8031 | ||
8032 | r_type = ELF64_R_TYPE (rel->r_info); | |
8033 | if (r_type != R_PPC64_ADDR64) | |
8034 | continue; | |
8035 | ||
8036 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8037 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8038 | r_symndx, ibfd)) | |
8039 | goto error_ret; | |
8040 | ||
425b145b | 8041 | if (sym_sec == NULL |
c27b8c2a | 8042 | || sym_sec->output_section == NULL |
dbaa2011 | 8043 | || discarded_section (sym_sec)) |
425b145b AM |
8044 | continue; |
8045 | ||
afe397ea | 8046 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8047 | continue; |
8048 | ||
8049 | if (h != NULL) | |
bddc25c9 AM |
8050 | { |
8051 | if (h->type == STT_GNU_IFUNC) | |
8052 | continue; | |
8053 | val = h->root.u.def.value; | |
8054 | } | |
ba761f19 | 8055 | else |
bddc25c9 AM |
8056 | { |
8057 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8058 | continue; | |
8059 | val = sym->st_value; | |
8060 | } | |
ba761f19 AM |
8061 | val += rel->r_addend; |
8062 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8063 | ||
8064 | /* We don't yet know the exact toc pointer value, but we | |
8065 | know it will be somewhere in the toc section. Don't | |
8066 | optimize if the difference from any possible toc | |
8067 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8068 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8069 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8070 | continue; | |
8071 | ||
8072 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8073 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8074 | continue; | |
8075 | ||
8076 | if (skip == NULL) | |
8077 | { | |
8078 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8079 | if (skip == NULL) | |
8080 | goto error_ret; | |
8081 | } | |
8082 | ||
8083 | skip[rel->r_offset >> 3] | |
425b145b | 8084 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8085 | } |
ba761f19 AM |
8086 | } |
8087 | ||
c5614fa4 AM |
8088 | if (skip == NULL) |
8089 | continue; | |
8090 | ||
8091 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8092 | if (used == NULL) | |
8093 | { | |
8094 | error_ret: | |
8095 | if (local_syms != NULL | |
8096 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8097 | free (local_syms); | |
8098 | if (sec != NULL | |
8099 | && relstart != NULL | |
8100 | && elf_section_data (sec)->relocs != relstart) | |
8101 | free (relstart); | |
425b145b AM |
8102 | if (toc_relocs != NULL |
8103 | && elf_section_data (toc)->relocs != toc_relocs) | |
8104 | free (toc_relocs); | |
c5614fa4 AM |
8105 | if (skip != NULL) |
8106 | free (skip); | |
8107 | return FALSE; | |
8108 | } | |
8109 | ||
30038c59 AM |
8110 | /* Now check all kept sections that might reference the toc. |
8111 | Check the toc itself last. */ | |
8112 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8113 | : ibfd->sections); | |
c5614fa4 | 8114 | sec != NULL; |
c5614fa4 | 8115 | sec = (sec == toc ? NULL |
c5614fa4 | 8116 | : sec->next == NULL ? toc |
30038c59 | 8117 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8118 | : sec->next)) |
8119 | { | |
8120 | int repeat; | |
8121 | ||
8122 | if (sec->reloc_count == 0 | |
dbaa2011 | 8123 | || discarded_section (sec) |
c5614fa4 AM |
8124 | || get_opd_info (sec) |
8125 | || (sec->flags & SEC_ALLOC) == 0 | |
8126 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8127 | continue; | |
8128 | ||
854b41e7 AM |
8129 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8130 | info->keep_memory); | |
c5614fa4 | 8131 | if (relstart == NULL) |
2915c55b JK |
8132 | { |
8133 | free (used); | |
8134 | goto error_ret; | |
8135 | } | |
c5614fa4 AM |
8136 | |
8137 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8138 | do |
d4f1ee75 AM |
8139 | { |
8140 | repeat = 0; | |
8141 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8142 | { | |
8143 | enum elf_ppc64_reloc_type r_type; | |
8144 | unsigned long r_symndx; | |
8145 | asection *sym_sec; | |
8146 | struct elf_link_hash_entry *h; | |
8147 | Elf_Internal_Sym *sym; | |
8148 | bfd_vma val; | |
8149 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8150 | |
d4f1ee75 AM |
8151 | r_type = ELF64_R_TYPE (rel->r_info); |
8152 | switch (r_type) | |
8153 | { | |
8154 | default: | |
8155 | insn_check = no_check; | |
8156 | break; | |
98528052 | 8157 | |
d4f1ee75 AM |
8158 | case R_PPC64_GOT_TLSLD16_HA: |
8159 | case R_PPC64_GOT_TLSGD16_HA: | |
8160 | case R_PPC64_GOT_TPREL16_HA: | |
8161 | case R_PPC64_GOT_DTPREL16_HA: | |
8162 | case R_PPC64_GOT16_HA: | |
8163 | case R_PPC64_TOC16_HA: | |
8164 | insn_check = check_ha; | |
8165 | break; | |
98528052 | 8166 | |
d4f1ee75 AM |
8167 | case R_PPC64_GOT_TLSLD16_LO: |
8168 | case R_PPC64_GOT_TLSGD16_LO: | |
8169 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8170 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8171 | case R_PPC64_GOT16_LO: | |
8172 | case R_PPC64_GOT16_LO_DS: | |
8173 | case R_PPC64_TOC16_LO: | |
8174 | case R_PPC64_TOC16_LO_DS: | |
8175 | insn_check = check_lo; | |
8176 | break; | |
8177 | } | |
560c8763 | 8178 | |
d4f1ee75 AM |
8179 | if (insn_check != no_check) |
8180 | { | |
8181 | bfd_vma off = rel->r_offset & ~3; | |
8182 | unsigned char buf[4]; | |
8183 | unsigned int insn; | |
c5614fa4 | 8184 | |
d4f1ee75 AM |
8185 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8186 | { | |
8187 | free (used); | |
8188 | goto error_ret; | |
8189 | } | |
8190 | insn = bfd_get_32 (ibfd, buf); | |
8191 | if (insn_check == check_lo | |
39eeab25 | 8192 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
8193 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
8194 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8195 | { | |
8196 | char str[12]; | |
8197 | ||
8198 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8199 | sprintf (str, "%#08x", insn); | |
8200 | info->callbacks->einfo | |
695344c0 | 8201 | /* xgettext:c-format */ |
174d0a74 | 8202 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 8203 | " %s instruction\n"), |
d4f1ee75 AM |
8204 | ibfd, sec, rel->r_offset & ~3, str); |
8205 | } | |
8206 | } | |
c5614fa4 | 8207 | |
d4f1ee75 AM |
8208 | switch (r_type) |
8209 | { | |
8210 | case R_PPC64_TOC16: | |
8211 | case R_PPC64_TOC16_LO: | |
8212 | case R_PPC64_TOC16_HI: | |
8213 | case R_PPC64_TOC16_HA: | |
8214 | case R_PPC64_TOC16_DS: | |
8215 | case R_PPC64_TOC16_LO_DS: | |
8216 | /* In case we're taking addresses of toc entries. */ | |
8217 | case R_PPC64_ADDR64: | |
8218 | break; | |
c5614fa4 | 8219 | |
d4f1ee75 AM |
8220 | default: |
8221 | continue; | |
8222 | } | |
c5614fa4 | 8223 | |
d4f1ee75 AM |
8224 | r_symndx = ELF64_R_SYM (rel->r_info); |
8225 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8226 | r_symndx, ibfd)) | |
8227 | { | |
8228 | free (used); | |
8229 | goto error_ret; | |
8230 | } | |
c5614fa4 | 8231 | |
d4f1ee75 AM |
8232 | if (sym_sec != toc) |
8233 | continue; | |
c5614fa4 | 8234 | |
d4f1ee75 AM |
8235 | if (h != NULL) |
8236 | val = h->root.u.def.value; | |
8237 | else | |
8238 | val = sym->st_value; | |
8239 | val += rel->r_addend; | |
ba761f19 | 8240 | |
d4f1ee75 AM |
8241 | if (val >= toc->size) |
8242 | continue; | |
ba761f19 | 8243 | |
d4f1ee75 AM |
8244 | if ((skip[val >> 3] & can_optimize) != 0) |
8245 | { | |
8246 | bfd_vma off; | |
8247 | unsigned char opc; | |
8248 | ||
8249 | switch (r_type) | |
8250 | { | |
8251 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8252 | break; |
ba761f19 | 8253 | |
d4f1ee75 AM |
8254 | case R_PPC64_TOC16_LO_DS: |
8255 | off = rel->r_offset; | |
8256 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8257 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8258 | off, 1)) | |
8259 | { | |
8260 | free (used); | |
8261 | goto error_ret; | |
8262 | } | |
8263 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8264 | break; | |
1a0670f3 | 8265 | /* Fall through. */ |
ba761f19 | 8266 | |
d4f1ee75 AM |
8267 | default: |
8268 | /* Wrong sort of reloc, or not a ld. We may | |
8269 | as well clear ref_from_discarded too. */ | |
8270 | skip[val >> 3] = 0; | |
8271 | } | |
8272 | } | |
8273 | ||
8274 | if (sec != toc) | |
8275 | used[val >> 3] = 1; | |
8276 | /* For the toc section, we only mark as used if this | |
8277 | entry itself isn't unused. */ | |
8278 | else if ((used[rel->r_offset >> 3] | |
8279 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8280 | && !used[val >> 3]) | |
8281 | { | |
8282 | /* Do all the relocs again, to catch reference | |
8283 | chains. */ | |
8284 | repeat = 1; | |
8285 | used[val >> 3] = 1; | |
8286 | } | |
8287 | } | |
8288 | } | |
c5614fa4 | 8289 | while (repeat); |
854b41e7 AM |
8290 | |
8291 | if (elf_section_data (sec)->relocs != relstart) | |
8292 | free (relstart); | |
c5614fa4 AM |
8293 | } |
8294 | ||
8295 | /* Merge the used and skip arrays. Assume that TOC | |
8296 | doublewords not appearing as either used or unused belong | |
de194d85 | 8297 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
8298 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
8299 | drop < skip + (toc->size + 7) / 8; | |
8300 | ++drop, ++keep) | |
8301 | { | |
8302 | if (*keep) | |
8303 | { | |
ba761f19 AM |
8304 | *drop &= ~ref_from_discarded; |
8305 | if ((*drop & can_optimize) != 0) | |
8306 | some_unused = 1; | |
c5614fa4 AM |
8307 | last = 0; |
8308 | } | |
b140b010 | 8309 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8310 | { |
8311 | some_unused = 1; | |
ba761f19 | 8312 | last = ref_from_discarded; |
c5614fa4 AM |
8313 | } |
8314 | else | |
8315 | *drop = last; | |
8316 | } | |
8317 | ||
8318 | free (used); | |
8319 | ||
8320 | if (some_unused) | |
8321 | { | |
8322 | bfd_byte *contents, *src; | |
8323 | unsigned long off; | |
d62b3684 | 8324 | Elf_Internal_Sym *sym; |
ba761f19 | 8325 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8326 | |
8327 | /* Shuffle the toc contents, and at the same time convert the | |
8328 | skip array from booleans into offsets. */ | |
8329 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8330 | goto error_ret; | |
8331 | ||
8332 | elf_section_data (toc)->this_hdr.contents = contents; | |
8333 | ||
8334 | for (src = contents, off = 0, drop = skip; | |
8335 | src < contents + toc->size; | |
8336 | src += 8, ++drop) | |
8337 | { | |
ba761f19 AM |
8338 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8339 | off += 8; | |
c5614fa4 AM |
8340 | else if (off != 0) |
8341 | { | |
8342 | *drop = off; | |
8343 | memcpy (src - off, src, 8); | |
8344 | } | |
8345 | } | |
854b41e7 | 8346 | *drop = off; |
c5614fa4 AM |
8347 | toc->rawsize = toc->size; |
8348 | toc->size = src - contents - off; | |
8349 | ||
ba761f19 AM |
8350 | /* Adjust addends for relocs against the toc section sym, |
8351 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8352 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8353 | { | |
8354 | if (sec->reloc_count == 0 | |
dbaa2011 | 8355 | || discarded_section (sec)) |
c5614fa4 AM |
8356 | continue; |
8357 | ||
8358 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8359 | info->keep_memory); |
c5614fa4 AM |
8360 | if (relstart == NULL) |
8361 | goto error_ret; | |
8362 | ||
8363 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8364 | { | |
8365 | enum elf_ppc64_reloc_type r_type; | |
8366 | unsigned long r_symndx; | |
8367 | asection *sym_sec; | |
8368 | struct elf_link_hash_entry *h; | |
854b41e7 | 8369 | bfd_vma val; |
c5614fa4 AM |
8370 | |
8371 | r_type = ELF64_R_TYPE (rel->r_info); | |
8372 | switch (r_type) | |
8373 | { | |
8374 | default: | |
8375 | continue; | |
8376 | ||
8377 | case R_PPC64_TOC16: | |
8378 | case R_PPC64_TOC16_LO: | |
8379 | case R_PPC64_TOC16_HI: | |
8380 | case R_PPC64_TOC16_HA: | |
8381 | case R_PPC64_TOC16_DS: | |
8382 | case R_PPC64_TOC16_LO_DS: | |
8383 | case R_PPC64_ADDR64: | |
8384 | break; | |
8385 | } | |
8386 | ||
8387 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8388 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8389 | r_symndx, ibfd)) | |
8390 | goto error_ret; | |
8391 | ||
ba761f19 | 8392 | if (sym_sec != toc) |
c5614fa4 AM |
8393 | continue; |
8394 | ||
ba761f19 AM |
8395 | if (h != NULL) |
8396 | val = h->root.u.def.value; | |
8397 | else | |
8398 | { | |
8399 | val = sym->st_value; | |
8400 | if (val != 0) | |
8401 | local_toc_syms = TRUE; | |
8402 | } | |
8403 | ||
8404 | val += rel->r_addend; | |
854b41e7 AM |
8405 | |
8406 | if (val > toc->rawsize) | |
8407 | val = toc->rawsize; | |
ba761f19 AM |
8408 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8409 | continue; | |
8410 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8411 | { | |
8412 | Elf_Internal_Rela *tocrel | |
425b145b | 8413 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
8414 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
8415 | ||
8416 | switch (r_type) | |
8417 | { | |
8418 | case R_PPC64_TOC16_HA: | |
8419 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8420 | break; | |
8421 | ||
8422 | case R_PPC64_TOC16_LO_DS: | |
8423 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8424 | break; | |
8425 | ||
8426 | default: | |
28942f62 AM |
8427 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
8428 | ppc_howto_init (); | |
b140b010 | 8429 | info->callbacks->einfo |
695344c0 | 8430 | /* xgettext:c-format */ |
174d0a74 | 8431 | (_("%H: %s references " |
b140b010 AM |
8432 | "optimized away TOC entry\n"), |
8433 | ibfd, sec, rel->r_offset, | |
8434 | ppc64_elf_howto_table[r_type]->name); | |
8435 | bfd_set_error (bfd_error_bad_value); | |
8436 | goto error_ret; | |
ba761f19 AM |
8437 | } |
8438 | rel->r_addend = tocrel->r_addend; | |
8439 | elf_section_data (sec)->relocs = relstart; | |
8440 | continue; | |
8441 | } | |
8442 | ||
8443 | if (h != NULL || sym->st_value != 0) | |
8444 | continue; | |
854b41e7 AM |
8445 | |
8446 | rel->r_addend -= skip[val >> 3]; | |
8447 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8448 | } |
854b41e7 AM |
8449 | |
8450 | if (elf_section_data (sec)->relocs != relstart) | |
8451 | free (relstart); | |
c5614fa4 AM |
8452 | } |
8453 | ||
8454 | /* We shouldn't have local or global symbols defined in the TOC, | |
8455 | but handle them anyway. */ | |
df22d223 AM |
8456 | if (local_syms != NULL) |
8457 | for (sym = local_syms; | |
8458 | sym < local_syms + symtab_hdr->sh_info; | |
8459 | ++sym) | |
8460 | if (sym->st_value != 0 | |
8461 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8462 | { | |
8463 | unsigned long i; | |
854b41e7 | 8464 | |
df22d223 AM |
8465 | if (sym->st_value > toc->rawsize) |
8466 | i = toc->rawsize >> 3; | |
8467 | else | |
8468 | i = sym->st_value >> 3; | |
854b41e7 | 8469 | |
df22d223 AM |
8470 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8471 | { | |
8472 | if (local_toc_syms) | |
4eca0228 | 8473 | _bfd_error_handler |
df22d223 AM |
8474 | (_("%s defined on removed toc entry"), |
8475 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8476 | do | |
8477 | ++i; | |
8478 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8479 | sym->st_value = (bfd_vma) i << 3; | |
8480 | } | |
d62b3684 | 8481 | |
df22d223 AM |
8482 | sym->st_value -= skip[i]; |
8483 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8484 | } | |
c5614fa4 | 8485 | |
854b41e7 | 8486 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8487 | if (toc_inf.global_toc_syms) |
8488 | { | |
8489 | toc_inf.toc = toc; | |
8490 | toc_inf.skip = skip; | |
8491 | toc_inf.global_toc_syms = FALSE; | |
8492 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8493 | &toc_inf); | |
8494 | } | |
854b41e7 AM |
8495 | |
8496 | if (toc->reloc_count != 0) | |
8497 | { | |
d4730f92 | 8498 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8499 | Elf_Internal_Rela *wrel; |
8500 | bfd_size_type sz; | |
8501 | ||
854b41e7 | 8502 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
8503 | if (toc_relocs == NULL) |
8504 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8505 | info->keep_memory); | |
8506 | if (toc_relocs == NULL) | |
8507 | goto error_ret; | |
8508 | ||
425b145b AM |
8509 | wrel = toc_relocs; |
8510 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
8511 | if ((skip[rel->r_offset >> 3] |
8512 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8513 | { |
8514 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8515 | wrel->r_info = rel->r_info; | |
8516 | wrel->r_addend = rel->r_addend; | |
8517 | ++wrel; | |
8518 | } | |
8519 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
8520 | &local_syms, NULL, NULL)) | |
8521 | goto error_ret; | |
8522 | ||
425b145b AM |
8523 | elf_section_data (toc)->relocs = toc_relocs; |
8524 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
8525 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
8526 | sz = rel_hdr->sh_entsize; | |
8527 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 8528 | } |
c5614fa4 | 8529 | } |
28be611c AM |
8530 | else if (toc_relocs != NULL |
8531 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 8532 | free (toc_relocs); |
c5614fa4 AM |
8533 | |
8534 | if (local_syms != NULL | |
8535 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8536 | { | |
8537 | if (!info->keep_memory) | |
8538 | free (local_syms); | |
8539 | else | |
8540 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8541 | } | |
8542 | free (skip); | |
8543 | } | |
8544 | ||
8545 | return TRUE; | |
8546 | } | |
8547 | ||
1bbe0902 AM |
8548 | /* Return true iff input section I references the TOC using |
8549 | instructions limited to +/-32k offsets. */ | |
8550 | ||
8551 | bfd_boolean | |
8552 | ppc64_elf_has_small_toc_reloc (asection *i) | |
8553 | { | |
8554 | return (is_ppc64_elf (i->owner) | |
8555 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
8556 | } | |
8557 | ||
927be08e AM |
8558 | /* Allocate space for one GOT entry. */ |
8559 | ||
8560 | static void | |
8561 | allocate_got (struct elf_link_hash_entry *h, | |
8562 | struct bfd_link_info *info, | |
8563 | struct got_entry *gent) | |
8564 | { | |
8565 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
8566 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
8567 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
8568 | ? 16 : 8); | |
8569 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
8570 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
8571 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
8572 | ||
8573 | gent->got.offset = got->size; | |
8574 | got->size += entsize; | |
8575 | ||
19e08130 | 8576 | if (h->type == STT_GNU_IFUNC) |
927be08e | 8577 | { |
33e44f2e | 8578 | htab->elf.irelplt->size += rentsize; |
19e08130 | 8579 | htab->got_reli_size += rentsize; |
927be08e | 8580 | } |
f15d0b54 AM |
8581 | else if (((bfd_link_pic (info) |
8582 | && !((gent->tls_type & TLS_TPREL) != 0 | |
8583 | && bfd_link_executable (info) | |
8584 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
8585 | || (htab->elf.dynamic_sections_created |
8586 | && h->dynindx != -1 | |
8587 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 8588 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 8589 | { |
19e08130 | 8590 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 8591 | relgot->size += rentsize; |
927be08e AM |
8592 | } |
8593 | } | |
8594 | ||
7865406b AM |
8595 | /* This function merges got entries in the same toc group. */ |
8596 | ||
8597 | static void | |
8598 | merge_got_entries (struct got_entry **pent) | |
8599 | { | |
8600 | struct got_entry *ent, *ent2; | |
8601 | ||
8602 | for (ent = *pent; ent != NULL; ent = ent->next) | |
8603 | if (!ent->is_indirect) | |
8604 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
8605 | if (!ent2->is_indirect | |
8606 | && ent2->addend == ent->addend | |
8607 | && ent2->tls_type == ent->tls_type | |
8608 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
8609 | { | |
8610 | ent2->is_indirect = TRUE; | |
8611 | ent2->got.ent = ent; | |
8612 | } | |
8613 | } | |
8614 | ||
46434633 | 8615 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
8616 | |
8617 | static bfd_boolean | |
46434633 AM |
8618 | ensure_undef_dynamic (struct bfd_link_info *info, |
8619 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
8620 | { |
8621 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
8622 | ||
8623 | if (htab->dynamic_sections_created | |
46434633 AM |
8624 | && ((info->dynamic_undefined_weak != 0 |
8625 | && h->root.type == bfd_link_hash_undefweak) | |
8626 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
8627 | && h->dynindx == -1 |
8628 | && !h->forced_local | |
8629 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
8630 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
8631 | return TRUE; | |
8632 | } | |
8633 | ||
65f38f15 AM |
8634 | /* Allocate space in .plt, .got and associated reloc sections for |
8635 | dynamic relocs. */ | |
5bd4f169 | 8636 | |
b34976b6 | 8637 | static bfd_boolean |
4ce794b7 | 8638 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 8639 | { |
65f38f15 AM |
8640 | struct bfd_link_info *info; |
8641 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 8642 | asection *s; |
65f38f15 | 8643 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 8644 | struct got_entry **pgent, *gent; |
5bd4f169 | 8645 | |
e92d460e | 8646 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 8647 | return TRUE; |
5bd4f169 | 8648 | |
65f38f15 AM |
8649 | info = (struct bfd_link_info *) inf; |
8650 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8651 | if (htab == NULL) |
8652 | return FALSE; | |
5bd4f169 | 8653 | |
951fd09b AM |
8654 | eh = (struct ppc_link_hash_entry *) h; |
8655 | /* Run through the TLS GD got entries first if we're changing them | |
8656 | to TPREL. */ | |
37da22e5 | 8657 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
8658 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8659 | if (gent->got.refcount > 0 | |
8660 | && (gent->tls_type & TLS_GD) != 0) | |
8661 | { | |
8662 | /* This was a GD entry that has been converted to TPREL. If | |
8663 | there happens to be a TPREL entry we can use that one. */ | |
8664 | struct got_entry *ent; | |
8665 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
8666 | if (ent->got.refcount > 0 | |
8667 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
8668 | && ent->addend == gent->addend |
8669 | && ent->owner == gent->owner) | |
951fd09b AM |
8670 | { |
8671 | gent->got.refcount = 0; | |
8672 | break; | |
8673 | } | |
8674 | ||
8675 | /* If not, then we'll be using our own TPREL entry. */ | |
8676 | if (gent->got.refcount != 0) | |
8677 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
8678 | } | |
8679 | ||
7865406b AM |
8680 | /* Remove any list entry that won't generate a word in the GOT before |
8681 | we call merge_got_entries. Otherwise we risk merging to empty | |
8682 | entries. */ | |
0b8bcf0d AM |
8683 | pgent = &h->got.glist; |
8684 | while ((gent = *pgent) != NULL) | |
411e1bfb | 8685 | if (gent->got.refcount > 0) |
7865406b AM |
8686 | { |
8687 | if ((gent->tls_type & TLS_LD) != 0 | |
8688 | && !h->def_dynamic) | |
8689 | { | |
8690 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
8691 | *pgent = gent->next; | |
8692 | } | |
8693 | else | |
8694 | pgent = &gent->next; | |
8695 | } | |
8696 | else | |
8697 | *pgent = gent->next; | |
8698 | ||
8699 | if (!htab->do_multi_toc) | |
8700 | merge_got_entries (&h->got.glist); | |
8701 | ||
8702 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
8703 | if (!gent->is_indirect) | |
411e1bfb | 8704 | { |
46434633 AM |
8705 | /* Make sure this symbol is output as a dynamic symbol. */ |
8706 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 8707 | return FALSE; |
65f38f15 | 8708 | |
0c8d6e5c | 8709 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 8710 | abort (); |
0ffa91dd | 8711 | |
927be08e | 8712 | allocate_got (h, info, gent); |
411e1bfb | 8713 | } |
65f38f15 | 8714 | |
954b63d4 AM |
8715 | /* If no dynamic sections we can't have dynamic relocs, except for |
8716 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
8717 | if (!htab->elf.dynamic_sections_created |
8718 | && h->type != STT_GNU_IFUNC) | |
8719 | eh->dyn_relocs = NULL; | |
8720 | ||
529fe20e AM |
8721 | /* Discard relocs on undefined symbols that must be local. */ |
8722 | else if (h->root.type == bfd_link_hash_undefined | |
8723 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8724 | eh->dyn_relocs = NULL; | |
8725 | ||
954b63d4 AM |
8726 | /* Also discard relocs on undefined weak syms with non-default |
8727 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 8728 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
8729 | eh->dyn_relocs = NULL; |
8730 | ||
8a2058b5 | 8731 | if (eh->dyn_relocs != NULL) |
65f38f15 | 8732 | { |
8a2058b5 AM |
8733 | struct elf_dyn_relocs *p, **pp; |
8734 | ||
57e7d118 AM |
8735 | /* In the shared -Bsymbolic case, discard space allocated for |
8736 | dynamic pc-relative relocs against symbols which turn out to | |
8737 | be defined in regular objects. For the normal shared case, | |
8738 | discard space for relocs that have become local due to symbol | |
8739 | visibility changes. */ | |
8740 | ||
8741 | if (bfd_link_pic (info)) | |
65f38f15 | 8742 | { |
57e7d118 AM |
8743 | /* Relocs that use pc_count are those that appear on a call |
8744 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
8745 | can be generated via assembly. We want calls to | |
8746 | protected symbols to resolve directly to the function | |
8747 | rather than going via the plt. If people want function | |
8748 | pointer comparisons to work as expected then they should | |
8749 | avoid writing weird assembly. */ | |
8750 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
8751 | { | |
57e7d118 AM |
8752 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
8753 | { | |
8754 | p->count -= p->pc_count; | |
8755 | p->pc_count = 0; | |
8756 | if (p->count == 0) | |
8757 | *pp = p->next; | |
8758 | else | |
8759 | pp = &p->next; | |
8760 | } | |
8761 | } | |
65f38f15 | 8762 | |
954b63d4 | 8763 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 8764 | { |
46434633 AM |
8765 | /* Make sure this symbol is output as a dynamic symbol. */ |
8766 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 8767 | return FALSE; |
5bd4f169 | 8768 | } |
65f38f15 | 8769 | } |
529fe20e | 8770 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 8771 | { |
8a2058b5 | 8772 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
8773 | symbols which turn out to need copy relocs or are not |
8774 | dynamic. */ | |
529fe20e AM |
8775 | if (h->dynamic_adjusted |
8776 | && !h->def_regular | |
8777 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 8778 | { |
46434633 AM |
8779 | /* Make sure this symbol is output as a dynamic symbol. */ |
8780 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 8781 | return FALSE; |
dfbb6ac9 | 8782 | |
f0158f44 AM |
8783 | if (h->dynindx == -1) |
8784 | eh->dyn_relocs = NULL; | |
8785 | } | |
8786 | else | |
8a2058b5 | 8787 | eh->dyn_relocs = NULL; |
57e7d118 AM |
8788 | } |
8789 | ||
8790 | /* Finally, allocate space. */ | |
8791 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8792 | { | |
8793 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
8794 | if (eh->elf.type == STT_GNU_IFUNC) | |
8795 | sreloc = htab->elf.irelplt; | |
8796 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 8797 | } |
65f38f15 | 8798 | } |
57e7d118 | 8799 | |
2d7ad24e AM |
8800 | /* We might need a PLT entry when the symbol |
8801 | a) is dynamic, or | |
8802 | b) is an ifunc, or | |
8803 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
8804 | d) has plt16 relocs and we are linking statically. */ | |
8805 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
8806 | || h->type == STT_GNU_IFUNC | |
8807 | || (h->needs_plt && h->dynamic_adjusted) | |
8808 | || (h->needs_plt | |
8809 | && h->def_regular | |
8810 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 8811 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
8812 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
8813 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 8814 | { |
57e7d118 AM |
8815 | struct plt_entry *pent; |
8816 | bfd_boolean doneone = FALSE; | |
8817 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
8818 | if (pent->plt.refcount > 0) | |
8819 | { | |
8820 | if (!htab->elf.dynamic_sections_created | |
8821 | || h->dynindx == -1) | |
8822 | { | |
2d7ad24e AM |
8823 | if (h->type == STT_GNU_IFUNC) |
8824 | { | |
8825 | s = htab->elf.iplt; | |
8826 | pent->plt.offset = s->size; | |
8827 | s->size += PLT_ENTRY_SIZE (htab); | |
8828 | s = htab->elf.irelplt; | |
8829 | } | |
8830 | else | |
8831 | { | |
8832 | s = htab->pltlocal; | |
8833 | pent->plt.offset = s->size; | |
8834 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
8835 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
8836 | } | |
57e7d118 AM |
8837 | } |
8838 | else | |
8839 | { | |
8840 | /* If this is the first .plt entry, make room for the special | |
8841 | first entry. */ | |
8842 | s = htab->elf.splt; | |
8843 | if (s->size == 0) | |
8844 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 8845 | |
57e7d118 | 8846 | pent->plt.offset = s->size; |
65f38f15 | 8847 | |
57e7d118 AM |
8848 | /* Make room for this entry. */ |
8849 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 8850 | |
57e7d118 AM |
8851 | /* Make room for the .glink code. */ |
8852 | s = htab->glink; | |
8853 | if (s->size == 0) | |
9e390558 | 8854 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
8855 | if (htab->opd_abi) |
8856 | { | |
8857 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 8858 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
8859 | s->size += 4; |
8860 | s->size += 2*4; | |
8861 | } | |
8862 | else | |
8863 | s->size += 4; | |
65f38f15 | 8864 | |
57e7d118 AM |
8865 | /* We also need to make an entry in the .rela.plt section. */ |
8866 | s = htab->elf.srelplt; | |
8867 | } | |
2d7ad24e AM |
8868 | if (s != NULL) |
8869 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
8870 | doneone = TRUE; |
8871 | } | |
8872 | else | |
8873 | pent->plt.offset = (bfd_vma) -1; | |
8874 | if (!doneone) | |
8875 | { | |
8876 | h->plt.plist = NULL; | |
8877 | h->needs_plt = 0; | |
8878 | } | |
65f38f15 | 8879 | } |
57e7d118 | 8880 | else |
65f38f15 | 8881 | { |
57e7d118 AM |
8882 | h->plt.plist = NULL; |
8883 | h->needs_plt = 0; | |
65f38f15 AM |
8884 | } |
8885 | ||
b34976b6 | 8886 | return TRUE; |
65f38f15 AM |
8887 | } |
8888 | ||
9e390558 AM |
8889 | #define PPC_LO(v) ((v) & 0xffff) |
8890 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8891 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8892 | ||
a345bc8d AM |
8893 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
8894 | to set up space for global entry stubs. These are put in glink, | |
8895 | after the branch table. */ | |
65f38f15 | 8896 | |
b34976b6 | 8897 | static bfd_boolean |
a345bc8d | 8898 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 8899 | { |
a345bc8d AM |
8900 | struct bfd_link_info *info; |
8901 | struct ppc_link_hash_table *htab; | |
8902 | struct plt_entry *pent; | |
9e390558 | 8903 | asection *s, *plt; |
65f38f15 | 8904 | |
a345bc8d AM |
8905 | if (h->root.type == bfd_link_hash_indirect) |
8906 | return TRUE; | |
65f38f15 | 8907 | |
a345bc8d AM |
8908 | if (!h->pointer_equality_needed) |
8909 | return TRUE; | |
65f38f15 | 8910 | |
a345bc8d AM |
8911 | if (h->def_regular) |
8912 | return TRUE; | |
65f38f15 | 8913 | |
a345bc8d AM |
8914 | info = inf; |
8915 | htab = ppc_hash_table (info); | |
8916 | if (htab == NULL) | |
8917 | return FALSE; | |
8918 | ||
9e390558 AM |
8919 | s = htab->global_entry; |
8920 | plt = htab->elf.splt; | |
a345bc8d AM |
8921 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
8922 | if (pent->plt.offset != (bfd_vma) -1 | |
8923 | && pent->addend == 0) | |
8924 | { | |
afe397ea AM |
8925 | /* For ELFv2, if this symbol is not defined in a regular file |
8926 | and we are not generating a shared library or pie, then we | |
8927 | need to define the symbol in the executable on a call stub. | |
8928 | This is to avoid text relocations. */ | |
9e390558 AM |
8929 | bfd_vma off, stub_align, stub_off, stub_size; |
8930 | unsigned int align_power; | |
8931 | ||
8932 | stub_size = 16; | |
8933 | stub_off = s->size; | |
8934 | if (htab->params->plt_stub_align >= 0) | |
8935 | align_power = htab->params->plt_stub_align; | |
8936 | else | |
8937 | align_power = -htab->params->plt_stub_align; | |
8938 | /* Setting section alignment is delayed until we know it is | |
8939 | non-empty. Otherwise the .text output section will be | |
8940 | aligned at least to plt_stub_align even when no global | |
8941 | entry stubs are needed. */ | |
8942 | if (s->alignment_power < align_power) | |
8943 | s->alignment_power = align_power; | |
8944 | stub_align = (bfd_vma) 1 << align_power; | |
8945 | if (htab->params->plt_stub_align >= 0 | |
8946 | || ((((stub_off + stub_size - 1) & -stub_align) | |
8947 | - (stub_off & -stub_align)) | |
8948 | > ((stub_size - 1) & -stub_align))) | |
8949 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
8950 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
8951 | off -= stub_off + s->output_offset + s->output_section->vma; | |
8952 | /* Note that for --plt-stub-align negative we have a possible | |
8953 | dependency between stub offset and size. Break that | |
8954 | dependency by assuming the max stub size when calculating | |
8955 | the stub offset. */ | |
8956 | if (PPC_HA (off) == 0) | |
8957 | stub_size -= 4; | |
8a2058b5 | 8958 | h->root.type = bfd_link_hash_defined; |
afe397ea | 8959 | h->root.u.def.section = s; |
9e390558 AM |
8960 | h->root.u.def.value = stub_off; |
8961 | s->size = stub_off + stub_size; | |
a345bc8d AM |
8962 | break; |
8963 | } | |
8964 | return TRUE; | |
8965 | } | |
8966 | ||
8967 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
8968 | read-only sections. */ | |
8969 | ||
8970 | static bfd_boolean | |
98bbb1b8 | 8971 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 8972 | { |
98bbb1b8 AM |
8973 | asection *sec; |
8974 | ||
a345bc8d AM |
8975 | if (h->root.type == bfd_link_hash_indirect) |
8976 | return TRUE; | |
8977 | ||
98bbb1b8 AM |
8978 | sec = readonly_dynrelocs (h); |
8979 | if (sec != NULL) | |
a345bc8d | 8980 | { |
98bbb1b8 AM |
8981 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
8982 | ||
8983 | info->flags |= DF_TEXTREL; | |
2cdcc330 AM |
8984 | info->callbacks->minfo (_("%pB: dynamic relocation against `%pT'" |
8985 | " in read-only section `%pA'\n"), | |
8986 | sec->owner, h->root.root.string, sec); | |
a345bc8d AM |
8987 | |
8988 | /* Not an error, just cut short the traversal. */ | |
8989 | return FALSE; | |
65f38f15 | 8990 | } |
b34976b6 | 8991 | return TRUE; |
65f38f15 AM |
8992 | } |
8993 | ||
8994 | /* Set the sizes of the dynamic sections. */ | |
8995 | ||
b34976b6 | 8996 | static bfd_boolean |
ee67d69a | 8997 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 8998 | struct bfd_link_info *info) |
65f38f15 AM |
8999 | { |
9000 | struct ppc_link_hash_table *htab; | |
9001 | bfd *dynobj; | |
9002 | asection *s; | |
b34976b6 | 9003 | bfd_boolean relocs; |
65f38f15 | 9004 | bfd *ibfd; |
7865406b | 9005 | struct got_entry *first_tlsld; |
65f38f15 AM |
9006 | |
9007 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9008 | if (htab == NULL) |
9009 | return FALSE; | |
9010 | ||
65f38f15 AM |
9011 | dynobj = htab->elf.dynobj; |
9012 | if (dynobj == NULL) | |
9013 | abort (); | |
9014 | ||
9015 | if (htab->elf.dynamic_sections_created) | |
9016 | { | |
9017 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9018 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9019 | { |
3d4d4302 | 9020 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9021 | if (s == NULL) |
9022 | abort (); | |
eea6121a | 9023 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9024 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9025 | } | |
9026 | } | |
9027 | ||
9028 | /* Set up .got offsets for local syms, and space for local dynamic | |
9029 | relocs. */ | |
c72f2fb2 | 9030 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9031 | { |
411e1bfb AM |
9032 | struct got_entry **lgot_ents; |
9033 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9034 | struct plt_entry **local_plt; |
9035 | struct plt_entry **end_local_plt; | |
f961d9dd | 9036 | unsigned char *lgot_masks; |
65f38f15 AM |
9037 | bfd_size_type locsymcount; |
9038 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9039 | |
0c8d6e5c | 9040 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9041 | continue; |
9042 | ||
9043 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9044 | { | |
19e08130 | 9045 | struct ppc_dyn_relocs *p; |
65f38f15 | 9046 | |
6edfbbad | 9047 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9048 | { |
ec338859 AM |
9049 | if (!bfd_is_abs_section (p->sec) |
9050 | && bfd_is_abs_section (p->sec->output_section)) | |
9051 | { | |
9052 | /* Input section has been discarded, either because | |
9053 | it is a copy of a linkonce section or due to | |
9054 | linker script /DISCARD/, so we'll be discarding | |
9055 | the relocs too. */ | |
9056 | } | |
248866a8 | 9057 | else if (p->count != 0) |
ec338859 | 9058 | { |
19e08130 AM |
9059 | asection *srel = elf_section_data (p->sec)->sreloc; |
9060 | if (p->ifunc) | |
33e44f2e | 9061 | srel = htab->elf.irelplt; |
eea6121a | 9062 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9063 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9064 | info->flags |= DF_TEXTREL; | |
ec338859 | 9065 | } |
65f38f15 AM |
9066 | } |
9067 | } | |
9068 | ||
411e1bfb AM |
9069 | lgot_ents = elf_local_got_ents (ibfd); |
9070 | if (!lgot_ents) | |
65f38f15 AM |
9071 | continue; |
9072 | ||
0ffa91dd | 9073 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9074 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9075 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9076 | local_plt = (struct plt_entry **) end_lgot_ents; |
9077 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9078 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9079 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9080 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9081 | { |
0b8bcf0d | 9082 | struct got_entry **pent, *ent; |
411e1bfb | 9083 | |
0b8bcf0d AM |
9084 | pent = lgot_ents; |
9085 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9086 | if (ent->got.refcount > 0) |
9087 | { | |
e7b938ca | 9088 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9089 | { |
927be08e | 9090 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9091 | *pent = ent->next; |
411e1bfb AM |
9092 | } |
9093 | else | |
9094 | { | |
19e08130 AM |
9095 | unsigned int ent_size = 8; |
9096 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9097 | ||
eea6121a | 9098 | ent->got.offset = s->size; |
e7b938ca | 9099 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9100 | { |
19e08130 AM |
9101 | ent_size *= 2; |
9102 | rel_size *= 2; | |
9103 | } | |
9104 | s->size += ent_size; | |
37da22e5 | 9105 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 9106 | { |
33e44f2e | 9107 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9108 | htab->got_reli_size += rel_size; |
9109 | } | |
f15d0b54 AM |
9110 | else if (bfd_link_pic (info) |
9111 | && !((ent->tls_type & TLS_TPREL) != 0 | |
9112 | && bfd_link_executable (info))) | |
19e08130 AM |
9113 | { |
9114 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9115 | srel->size += rel_size; | |
927be08e | 9116 | } |
0b8bcf0d | 9117 | pent = &ent->next; |
411e1bfb AM |
9118 | } |
9119 | } | |
9120 | else | |
0b8bcf0d | 9121 | *pent = ent->next; |
65f38f15 | 9122 | } |
e054468f | 9123 | |
2d7ad24e AM |
9124 | /* Allocate space for plt calls to local syms. */ |
9125 | lgot_masks = (unsigned char *) end_local_plt; | |
9126 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
9127 | { |
9128 | struct plt_entry *ent; | |
9129 | ||
9130 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9131 | if (ent->plt.refcount > 0) | |
9132 | { | |
2d7ad24e AM |
9133 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
9134 | { | |
9135 | s = htab->elf.iplt; | |
9136 | ent->plt.offset = s->size; | |
9137 | s->size += PLT_ENTRY_SIZE (htab); | |
9138 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
9139 | } | |
3e04d765 AM |
9140 | else if (htab->can_convert_all_inline_plt |
9141 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
9142 | ent->plt.offset = (bfd_vma) -1; |
9143 | else | |
9144 | { | |
9145 | s = htab->pltlocal; | |
9146 | ent->plt.offset = s->size; | |
9147 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9148 | if (bfd_link_pic (info)) | |
9149 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
9150 | } | |
e054468f AM |
9151 | } |
9152 | else | |
9153 | ent->plt.offset = (bfd_vma) -1; | |
9154 | } | |
65f38f15 AM |
9155 | } |
9156 | ||
9157 | /* Allocate global sym .plt and .got entries, and space for global | |
9158 | sym dynamic relocs. */ | |
4ce794b7 | 9159 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 9160 | |
0e1862bb | 9161 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 9162 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 9163 | |
7865406b | 9164 | first_tlsld = NULL; |
c72f2fb2 | 9165 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 9166 | { |
7865406b AM |
9167 | struct got_entry *ent; |
9168 | ||
0c8d6e5c | 9169 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9170 | continue; |
9171 | ||
7865406b AM |
9172 | ent = ppc64_tlsld_got (ibfd); |
9173 | if (ent->got.refcount > 0) | |
102890f0 | 9174 | { |
7865406b | 9175 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9176 | { |
7865406b AM |
9177 | ent->is_indirect = TRUE; |
9178 | ent->got.ent = first_tlsld; | |
9179 | } | |
9180 | else | |
9181 | { | |
9182 | if (first_tlsld == NULL) | |
9183 | first_tlsld = ent; | |
9184 | s = ppc64_elf_tdata (ibfd)->got; | |
9185 | ent->got.offset = s->size; | |
9186 | ent->owner = ibfd; | |
9187 | s->size += 16; | |
0e1862bb | 9188 | if (bfd_link_pic (info)) |
7865406b AM |
9189 | { |
9190 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9191 | srel->size += sizeof (Elf64_External_Rela); | |
9192 | } | |
102890f0 AM |
9193 | } |
9194 | } | |
9195 | else | |
7865406b | 9196 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9197 | } |
9198 | ||
65f38f15 AM |
9199 | /* We now have determined the sizes of the various dynamic sections. |
9200 | Allocate memory for them. */ | |
b34976b6 | 9201 | relocs = FALSE; |
65f38f15 AM |
9202 | for (s = dynobj->sections; s != NULL; s = s->next) |
9203 | { | |
9204 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9205 | continue; | |
9206 | ||
4ce794b7 | 9207 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9208 | /* These haven't been allocated yet; don't strip. */ |
9209 | continue; | |
33e44f2e AM |
9210 | else if (s == htab->elf.sgot |
9211 | || s == htab->elf.splt | |
9212 | || s == htab->elf.iplt | |
2d7ad24e | 9213 | || s == htab->pltlocal |
c456f082 | 9214 | || s == htab->glink |
9e390558 | 9215 | || s == htab->global_entry |
5474d94f AM |
9216 | || s == htab->elf.sdynbss |
9217 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
9218 | { |
9219 | /* Strip this section if we don't need it; see the | |
9220 | comment below. */ | |
5bd4f169 | 9221 | } |
58d180e8 AM |
9222 | else if (s == htab->glink_eh_frame) |
9223 | { | |
9224 | if (!bfd_is_abs_section (s->output_section)) | |
9225 | /* Not sized yet. */ | |
9226 | continue; | |
9227 | } | |
70cc837d | 9228 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9229 | { |
c456f082 | 9230 | if (s->size != 0) |
5bd4f169 | 9231 | { |
33e44f2e | 9232 | if (s != htab->elf.srelplt) |
b34976b6 | 9233 | relocs = TRUE; |
5bd4f169 AM |
9234 | |
9235 | /* We use the reloc_count field as a counter if we need | |
9236 | to copy relocs into the output file. */ | |
9237 | s->reloc_count = 0; | |
9238 | } | |
9239 | } | |
65f38f15 | 9240 | else |
5bd4f169 AM |
9241 | { |
9242 | /* It's not one of our sections, so don't allocate space. */ | |
9243 | continue; | |
9244 | } | |
9245 | ||
eea6121a | 9246 | if (s->size == 0) |
5bd4f169 | 9247 | { |
c456f082 AM |
9248 | /* If we don't need this section, strip it from the |
9249 | output file. This is mostly to handle .rela.bss and | |
9250 | .rela.plt. We must create both sections in | |
9251 | create_dynamic_sections, because they must be created | |
9252 | before the linker maps input sections to output | |
9253 | sections. The linker does that before | |
9254 | adjust_dynamic_symbol is called, and it is that | |
9255 | function which decides whether anything needs to go | |
9256 | into these sections. */ | |
8423293d | 9257 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9258 | continue; |
9259 | } | |
9260 | ||
06bcf541 AM |
9261 | if (bfd_is_abs_section (s->output_section)) |
9262 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
9263 | s->name); | |
9264 | ||
c456f082 | 9265 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9266 | continue; |
9267 | ||
65f38f15 AM |
9268 | /* Allocate memory for the section contents. We use bfd_zalloc |
9269 | here in case unused entries are not reclaimed before the | |
9270 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9271 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9272 | sections instead of garbage. | |
9273 | We also rely on the section contents being zero when writing | |
5474d94f | 9274 | the GOT and .dynrelro. */ |
eea6121a | 9275 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9276 | if (s->contents == NULL) |
b34976b6 | 9277 | return FALSE; |
5bd4f169 AM |
9278 | } |
9279 | ||
c72f2fb2 | 9280 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 9281 | { |
0c8d6e5c | 9282 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9283 | continue; |
9284 | ||
e717da7e | 9285 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9286 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9287 | { |
eea6121a | 9288 | if (s->size == 0) |
8423293d | 9289 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9290 | else |
9291 | { | |
eea6121a | 9292 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9293 | if (s->contents == NULL) |
9294 | return FALSE; | |
9295 | } | |
9296 | } | |
9297 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9298 | if (s != NULL) | |
9299 | { | |
eea6121a | 9300 | if (s->size == 0) |
8423293d | 9301 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9302 | else |
9303 | { | |
eea6121a | 9304 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9305 | if (s->contents == NULL) |
9306 | return FALSE; | |
9307 | relocs = TRUE; | |
9308 | s->reloc_count = 0; | |
9309 | } | |
9310 | } | |
9311 | } | |
9312 | ||
e86ce104 | 9313 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9314 | { |
e8910a83 AM |
9315 | bfd_boolean tls_opt; |
9316 | ||
5bd4f169 AM |
9317 | /* Add some entries to the .dynamic section. We fill in the |
9318 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9319 | must add the entries now so that we get the correct size for | |
9320 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9321 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9322 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9323 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9324 | |
0e1862bb | 9325 | if (bfd_link_executable (info)) |
5bd4f169 | 9326 | { |
dc810e39 | 9327 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9328 | return FALSE; |
5bd4f169 AM |
9329 | } |
9330 | ||
33e44f2e | 9331 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 9332 | { |
dc810e39 AM |
9333 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9334 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9335 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9336 | || !add_dynamic_entry (DT_JMPREL, 0) |
9337 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9338 | return FALSE; |
5bd4f169 AM |
9339 | } |
9340 | ||
ee67d69a | 9341 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
9342 | { |
9343 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9344 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9345 | return FALSE; |
19397422 AM |
9346 | } |
9347 | ||
7c9cf415 | 9348 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
9349 | && htab->tls_get_addr_fd != NULL |
9350 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
9351 | if (tls_opt || !htab->opd_abi) | |
9352 | { | |
9353 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
9354 | return FALSE; | |
9355 | } | |
a7f2871e | 9356 | |
5bd4f169 AM |
9357 | if (relocs) |
9358 | { | |
dc810e39 AM |
9359 | if (!add_dynamic_entry (DT_RELA, 0) |
9360 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9361 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9362 | return FALSE; |
5bd4f169 | 9363 | |
65f38f15 AM |
9364 | /* If any dynamic relocs apply to a read-only section, |
9365 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9366 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 9367 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 9368 | |
65f38f15 | 9369 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9370 | { |
65f38f15 | 9371 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9372 | return FALSE; |
5bd4f169 | 9373 | } |
5bd4f169 | 9374 | } |
5bd4f169 | 9375 | } |
65f38f15 | 9376 | #undef add_dynamic_entry |
5bd4f169 | 9377 | |
b34976b6 | 9378 | return TRUE; |
5bd4f169 AM |
9379 | } |
9380 | ||
a345bc8d AM |
9381 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
9382 | ||
9383 | static bfd_boolean | |
9384 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
9385 | { | |
9386 | if (h->plt.plist != NULL | |
9387 | && !h->def_regular | |
9388 | && !h->pointer_equality_needed) | |
9389 | return FALSE; | |
9390 | ||
9391 | return _bfd_elf_hash_symbol (h); | |
9392 | } | |
9393 | ||
721956f4 | 9394 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9395 | |
4ce794b7 AM |
9396 | static inline enum ppc_stub_type |
9397 | ppc_type_of_stub (asection *input_sec, | |
9398 | const Elf_Internal_Rela *rel, | |
9399 | struct ppc_link_hash_entry **hash, | |
e054468f | 9400 | struct plt_entry **plt_ent, |
6911b7dc AM |
9401 | bfd_vma destination, |
9402 | unsigned long local_off) | |
5bd4f169 | 9403 | { |
721956f4 AM |
9404 | struct ppc_link_hash_entry *h = *hash; |
9405 | bfd_vma location; | |
9406 | bfd_vma branch_offset; | |
9407 | bfd_vma max_branch_offset; | |
4ce794b7 | 9408 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9409 | |
721956f4 AM |
9410 | if (h != NULL) |
9411 | { | |
e054468f | 9412 | struct plt_entry *ent; |
7fe2b9a6 | 9413 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9414 | if (h->oh != NULL |
9415 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9416 | { |
9417 | fdh = ppc_follow_link (h->oh); | |
9418 | *hash = fdh; | |
9419 | } | |
8387904d | 9420 | |
e054468f AM |
9421 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9422 | if (ent->addend == rel->r_addend | |
9423 | && ent->plt.offset != (bfd_vma) -1) | |
9424 | { | |
e054468f AM |
9425 | *plt_ent = ent; |
9426 | return ppc_stub_plt_call; | |
9427 | } | |
5bd4f169 | 9428 | |
7fe2b9a6 AM |
9429 | /* Here, we know we don't have a plt entry. If we don't have a |
9430 | either a defined function descriptor or a defined entry symbol | |
9431 | in a regular object file, then it is pointless trying to make | |
9432 | any other type of stub. */ | |
854b41e7 AM |
9433 | if (!is_static_defined (&fdh->elf) |
9434 | && !is_static_defined (&h->elf)) | |
721956f4 | 9435 | return ppc_stub_none; |
5d1634d7 | 9436 | } |
e054468f AM |
9437 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
9438 | { | |
9439 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
9440 | struct plt_entry **local_plt = (struct plt_entry **) | |
9441 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
9442 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
9443 | ||
9444 | if (local_plt[r_symndx] != NULL) | |
9445 | { | |
9446 | struct plt_entry *ent; | |
9447 | ||
9448 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
9449 | if (ent->addend == rel->r_addend | |
9450 | && ent->plt.offset != (bfd_vma) -1) | |
9451 | { | |
9452 | *plt_ent = ent; | |
9453 | return ppc_stub_plt_call; | |
9454 | } | |
9455 | } | |
9456 | } | |
5d1634d7 | 9457 | |
721956f4 AM |
9458 | /* Determine where the call point is. */ |
9459 | location = (input_sec->output_offset | |
9460 | + input_sec->output_section->vma | |
9461 | + rel->r_offset); | |
5d1634d7 | 9462 | |
721956f4 AM |
9463 | branch_offset = destination - location; |
9464 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 9465 | |
721956f4 AM |
9466 | /* Determine if a long branch stub is needed. */ |
9467 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
9468 | if (r_type == R_PPC64_REL14 |
9469 | || r_type == R_PPC64_REL14_BRTAKEN | |
9470 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 9471 | max_branch_offset = 1 << 15; |
5d1634d7 | 9472 | |
6911b7dc | 9473 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
9474 | /* We need a stub. Figure out whether a long_branch or plt_branch |
9475 | is needed later. */ | |
9476 | return ppc_stub_long_branch; | |
5d1634d7 | 9477 | |
721956f4 | 9478 | return ppc_stub_none; |
5d1634d7 AM |
9479 | } |
9480 | ||
05d0e962 AM |
9481 | /* Builds a 64-bit offset in r12 then adds it to r11 (LOAD false) or |
9482 | loads r12 from r11+r12 (LOAD true). | |
9483 | . lis %r12,xxx-1b@highest | |
9484 | . ori %r12,xxx-1b@higher | |
9485 | . sldi %r12,%r12,32 | |
9486 | . oris %r12,%r12,xxx-1b@hi | |
9487 | . ori %r12,%r12,xxx-1b@l | |
9488 | . add %r12,%r11,%r12 */ | |
9489 | ||
9490 | static bfd_byte * | |
9491 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
9492 | { | |
9493 | if (off + 0x8000 < 0x10000) | |
9494 | { | |
9495 | if (load) | |
9496 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
9497 | else | |
9498 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
9499 | p += 4; | |
9500 | } | |
9501 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
9502 | { | |
9503 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
9504 | p += 4; | |
9505 | if (load) | |
9506 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
9507 | else | |
9508 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
9509 | p += 4; | |
9510 | } | |
9511 | else | |
9512 | { | |
9513 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
9514 | { | |
9515 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
9516 | p += 4; | |
9517 | } | |
9518 | else | |
9519 | { | |
9520 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
9521 | p += 4; | |
9522 | if (((off >> 32) & 0xffff) != 0) | |
9523 | { | |
9524 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
9525 | p += 4; | |
9526 | } | |
9527 | } | |
9528 | if (((off >> 32) & 0xffffffffULL) != 0) | |
9529 | { | |
9530 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
9531 | p += 4; | |
9532 | } | |
9533 | if (PPC_HI (off) != 0) | |
9534 | { | |
9535 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
9536 | p += 4; | |
9537 | } | |
9538 | if (PPC_LO (off) != 0) | |
9539 | { | |
9540 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
9541 | p += 4; | |
9542 | } | |
9543 | if (load) | |
9544 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
9545 | else | |
9546 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
9547 | p += 4; | |
9548 | } | |
9549 | return p; | |
9550 | } | |
9551 | ||
9552 | static unsigned int | |
9553 | size_offset (bfd_vma off) | |
9554 | { | |
9555 | unsigned int size; | |
9556 | if (off + 0x8000 < 0x10000) | |
9557 | size = 4; | |
9558 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
9559 | size = 8; | |
9560 | else | |
9561 | { | |
9562 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
9563 | size = 4; | |
9564 | else | |
9565 | { | |
9566 | size = 4; | |
9567 | if (((off >> 32) & 0xffff) != 0) | |
9568 | size += 4; | |
9569 | } | |
9570 | if (((off >> 32) & 0xffffffffULL) != 0) | |
9571 | size += 4; | |
9572 | if (PPC_HI (off) != 0) | |
9573 | size += 4; | |
9574 | if (PPC_LO (off) != 0) | |
9575 | size += 4; | |
9576 | size += 4; | |
9577 | } | |
9578 | return size; | |
9579 | } | |
9580 | ||
df136d64 AM |
9581 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
9582 | ||
9583 | static bfd_byte * | |
9584 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
9585 | { | |
9586 | delta /= 4; | |
9587 | if (delta < 64) | |
9588 | *eh++ = DW_CFA_advance_loc + delta; | |
9589 | else if (delta < 256) | |
9590 | { | |
9591 | *eh++ = DW_CFA_advance_loc1; | |
9592 | *eh++ = delta; | |
9593 | } | |
9594 | else if (delta < 65536) | |
9595 | { | |
9596 | *eh++ = DW_CFA_advance_loc2; | |
9597 | bfd_put_16 (abfd, delta, eh); | |
9598 | eh += 2; | |
9599 | } | |
9600 | else | |
9601 | { | |
9602 | *eh++ = DW_CFA_advance_loc4; | |
9603 | bfd_put_32 (abfd, delta, eh); | |
9604 | eh += 4; | |
9605 | } | |
9606 | return eh; | |
9607 | } | |
9608 | ||
9609 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
9610 | ||
9611 | static unsigned int | |
9612 | eh_advance_size (unsigned int delta) | |
9613 | { | |
9614 | if (delta < 64 * 4) | |
9615 | /* DW_CFA_advance_loc+[1..63]. */ | |
9616 | return 1; | |
9617 | if (delta < 256 * 4) | |
9618 | /* DW_CFA_advance_loc1, byte. */ | |
9619 | return 2; | |
9620 | if (delta < 65536 * 4) | |
9621 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
9622 | return 3; | |
9623 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
9624 | return 5; | |
9625 | } | |
9626 | ||
794e51c0 AM |
9627 | /* With power7 weakly ordered memory model, it is possible for ld.so |
9628 | to update a plt entry in one thread and have another thread see a | |
9629 | stale zero toc entry. To avoid this we need some sort of acquire | |
9630 | barrier in the call stub. One solution is to make the load of the | |
9631 | toc word seem to appear to depend on the load of the function entry | |
9632 | word. Another solution is to test for r2 being zero, and branch to | |
9633 | the appropriate glink entry if so. | |
9634 | ||
9635 | . fake dep barrier compare | |
71a39c98 AM |
9636 | . ld 12,xxx(2) ld 12,xxx(2) |
9637 | . mtctr 12 mtctr 12 | |
9638 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
9639 | . add 2,2,11 cmpldi 2,0 |
9640 | . ld 2,xxx+8(2) bnectr+ | |
9641 | . bctr b <glink_entry> | |
9642 | ||
9643 | The solution involving the compare turns out to be faster, so | |
9644 | that's what we use unless the branch won't reach. */ | |
9645 | ||
9646 | #define ALWAYS_USE_FAKE_DEP 0 | |
9647 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 9648 | |
794e51c0 AM |
9649 | static inline unsigned int |
9650 | plt_stub_size (struct ppc_link_hash_table *htab, | |
9651 | struct ppc_stub_hash_entry *stub_entry, | |
9652 | bfd_vma off) | |
9653 | { | |
05d0e962 | 9654 | unsigned size; |
b9e5796b | 9655 | |
05d0e962 AM |
9656 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
9657 | { | |
9658 | size = 24 + size_offset (off); | |
9659 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
9660 | size += 4; | |
9661 | return size; | |
9662 | } | |
9663 | ||
9664 | size = 12; | |
b9e5796b AM |
9665 | if (ALWAYS_EMIT_R2SAVE |
9666 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9667 | size += 4; | |
9668 | if (PPC_HA (off) != 0) | |
794e51c0 | 9669 | size += 4; |
b9e5796b AM |
9670 | if (htab->opd_abi) |
9671 | { | |
9672 | size += 4; | |
e7d1c40c | 9673 | if (htab->params->plt_static_chain) |
b9e5796b | 9674 | size += 4; |
bd4d2eaa AM |
9675 | if (htab->params->plt_thread_safe |
9676 | && htab->elf.dynamic_sections_created | |
9677 | && stub_entry->h != NULL | |
9678 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 9679 | size += 8; |
e7d1c40c | 9680 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
9681 | size += 4; |
9682 | } | |
794e51c0 AM |
9683 | if (stub_entry->h != NULL |
9684 | && (stub_entry->h == htab->tls_get_addr_fd | |
9685 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 9686 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
9687 | { |
9688 | size += 7 * 4; | |
e81b4c93 | 9689 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) |
407aa07c | 9690 | size += 6 * 4; |
f378ab09 | 9691 | } |
794e51c0 AM |
9692 | return size; |
9693 | } | |
9694 | ||
2420fff6 AM |
9695 | /* Depending on the sign of plt_stub_align: |
9696 | If positive, return the padding to align to a 2**plt_stub_align | |
9697 | boundary. | |
9698 | If negative, if this stub would cross fewer 2**plt_stub_align | |
9699 | boundaries if we align, then return the padding needed to do so. */ | |
9700 | ||
794e51c0 AM |
9701 | static inline unsigned int |
9702 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
9703 | struct ppc_stub_hash_entry *stub_entry, | |
9704 | bfd_vma plt_off) | |
9705 | { | |
2420fff6 | 9706 | int stub_align; |
1aa42141 | 9707 | unsigned stub_size; |
6f20ed8a | 9708 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 9709 | |
2420fff6 AM |
9710 | if (htab->params->plt_stub_align >= 0) |
9711 | { | |
9712 | stub_align = 1 << htab->params->plt_stub_align; | |
9713 | if ((stub_off & (stub_align - 1)) != 0) | |
9714 | return stub_align - (stub_off & (stub_align - 1)); | |
9715 | return 0; | |
9716 | } | |
9717 | ||
9718 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 9719 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 9720 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 9721 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
9722 | return stub_align - (stub_off & (stub_align - 1)); |
9723 | return 0; | |
9724 | } | |
9725 | ||
9726 | /* Build a .plt call stub. */ | |
9727 | ||
9728 | static inline bfd_byte * | |
9729 | build_plt_stub (struct ppc_link_hash_table *htab, | |
9730 | struct ppc_stub_hash_entry *stub_entry, | |
9731 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
9732 | { | |
e7d1c40c | 9733 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 9734 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 9735 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
9736 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
9737 | && htab->elf.dynamic_sections_created | |
9738 | && stub_entry->h != NULL | |
9739 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
9740 | bfd_boolean use_fake_dep = plt_thread_safe; |
9741 | bfd_vma cmp_branch_off = 0; | |
9742 | ||
9743 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 9744 | && plt_load_toc |
794e51c0 | 9745 | && plt_thread_safe |
bd4d2eaa AM |
9746 | && !((stub_entry->h == htab->tls_get_addr_fd |
9747 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 9748 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
9749 | { |
9750 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
9751 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
9752 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 9753 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
9754 | bfd_vma to, from; |
9755 | ||
68d62958 AM |
9756 | if (pltindex > 32768) |
9757 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
9758 | to = (glinkoff |
9759 | + htab->glink->output_offset | |
9760 | + htab->glink->output_section->vma); | |
6f20ed8a | 9761 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
9762 | + 4 * (ALWAYS_EMIT_R2SAVE |
9763 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9764 | + 4 * (PPC_HA (offset) != 0) | |
9765 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
9766 | != PPC_HA (offset)) | |
9767 | + 4 * (plt_static_chain != 0) | |
9768 | + 20 | |
6f20ed8a AM |
9769 | + stub_entry->group->stub_sec->output_offset |
9770 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
9771 | cmp_branch_off = to - from; |
9772 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
9773 | } | |
9774 | ||
ac2df442 AM |
9775 | if (PPC_HA (offset) != 0) |
9776 | { | |
176a0d42 AM |
9777 | if (r != NULL) |
9778 | { | |
794e51c0 AM |
9779 | if (ALWAYS_EMIT_R2SAVE |
9780 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9781 | r[0].r_offset += 4; | |
176a0d42 | 9782 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 9783 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
9784 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
9785 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 9786 | if (plt_load_toc) |
176a0d42 | 9787 | { |
b9e5796b | 9788 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 9789 | { |
b9e5796b AM |
9790 | r[2].r_offset = r[1].r_offset + 4; |
9791 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
9792 | r[2].r_addend = r[0].r_addend; | |
9793 | } | |
9794 | else | |
9795 | { | |
9796 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
9797 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9798 | r[2].r_addend = r[0].r_addend + 8; | |
9799 | if (plt_static_chain) | |
9800 | { | |
9801 | r[3].r_offset = r[2].r_offset + 4; | |
9802 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9803 | r[3].r_addend = r[0].r_addend + 16; | |
9804 | } | |
c7131b65 | 9805 | } |
176a0d42 AM |
9806 | } |
9807 | } | |
794e51c0 AM |
9808 | if (ALWAYS_EMIT_R2SAVE |
9809 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 9810 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
9811 | if (plt_load_toc) |
9812 | { | |
9813 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
9814 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
9815 | } | |
9816 | else | |
9817 | { | |
9818 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
9819 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
9820 | } | |
b9e5796b AM |
9821 | if (plt_load_toc |
9822 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 9823 | { |
71a39c98 | 9824 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
9825 | offset = 0; |
9826 | } | |
71a39c98 | 9827 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 9828 | if (plt_load_toc) |
794e51c0 | 9829 | { |
b9e5796b AM |
9830 | if (use_fake_dep) |
9831 | { | |
9832 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
9833 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
9834 | } | |
9835 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
9836 | if (plt_static_chain) | |
9837 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 9838 | } |
ac2df442 AM |
9839 | } |
9840 | else | |
9841 | { | |
176a0d42 AM |
9842 | if (r != NULL) |
9843 | { | |
794e51c0 AM |
9844 | if (ALWAYS_EMIT_R2SAVE |
9845 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
9846 | r[0].r_offset += 4; | |
176a0d42 | 9847 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 9848 | if (plt_load_toc) |
176a0d42 | 9849 | { |
b9e5796b | 9850 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 9851 | { |
b9e5796b AM |
9852 | r[1].r_offset = r[0].r_offset + 4; |
9853 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
9854 | r[1].r_addend = r[0].r_addend; | |
9855 | } | |
9856 | else | |
9857 | { | |
9858 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
9859 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9860 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
9861 | if (plt_static_chain) | |
9862 | { | |
9863 | r[2].r_offset = r[1].r_offset + 4; | |
9864 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9865 | r[2].r_addend = r[0].r_addend + 8; | |
9866 | } | |
c7131b65 | 9867 | } |
176a0d42 AM |
9868 | } |
9869 | } | |
794e51c0 AM |
9870 | if (ALWAYS_EMIT_R2SAVE |
9871 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 9872 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 9873 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
9874 | if (plt_load_toc |
9875 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
9876 | { |
9877 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
9878 | offset = 0; | |
9879 | } | |
71a39c98 | 9880 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 9881 | if (plt_load_toc) |
794e51c0 | 9882 | { |
b9e5796b AM |
9883 | if (use_fake_dep) |
9884 | { | |
9885 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
9886 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
9887 | } | |
9888 | if (plt_static_chain) | |
9889 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
9890 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 9891 | } |
ac2df442 | 9892 | } |
b9e5796b | 9893 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
9894 | { |
9895 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
9896 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 9897 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
9898 | } |
9899 | else | |
407aa07c | 9900 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
9901 | return p; |
9902 | } | |
9903 | ||
a7f2871e AM |
9904 | /* Build a special .plt call stub for __tls_get_addr. */ |
9905 | ||
9906 | #define LD_R11_0R3 0xe9630000 | |
9907 | #define LD_R12_0R3 0xe9830000 | |
9908 | #define MR_R0_R3 0x7c601b78 | |
9909 | #define CMPDI_R11_0 0x2c2b0000 | |
9910 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
9911 | #define BEQLR 0x4d820020 | |
9912 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
9913 | #define STD_R11_0R1 0xf9610000 |
9914 | #define BCTRL 0x4e800421 | |
9915 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
9916 | #define MTLR_R11 0x7d6803a6 |
9917 | ||
9918 | static inline bfd_byte * | |
794e51c0 AM |
9919 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
9920 | struct ppc_stub_hash_entry *stub_entry, | |
9921 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 9922 | { |
e7d1c40c | 9923 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 9924 | bfd_byte *loc = p; |
794e51c0 | 9925 | |
a7f2871e AM |
9926 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
9927 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
9928 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
9929 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
9930 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
9931 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
9932 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
9933 | if (r != NULL) |
9934 | r[0].r_offset += 7 * 4; | |
e81b4c93 | 9935 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) |
f378ab09 AM |
9936 | return build_plt_stub (htab, stub_entry, p, offset, r); |
9937 | ||
a7f2871e | 9938 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 9939 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
9940 | |
9941 | if (r != NULL) | |
f378ab09 | 9942 | r[0].r_offset += 2 * 4; |
794e51c0 | 9943 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 9944 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 9945 | |
a078d95a | 9946 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 9947 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
9948 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
9949 | bfd_put_32 (obfd, BLR, p), p += 4; | |
9950 | ||
df136d64 AM |
9951 | if (htab->glink_eh_frame != NULL |
9952 | && htab->glink_eh_frame->size != 0) | |
9953 | { | |
9954 | bfd_byte *base, *eh; | |
9955 | unsigned int lr_used, delta; | |
9956 | ||
9957 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
9958 | eh = base + stub_entry->group->eh_size; | |
9959 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
9960 | delta = lr_used - stub_entry->group->lr_restore; | |
9961 | stub_entry->group->lr_restore = lr_used + 16; | |
9962 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
9963 | *eh++ = DW_CFA_offset_extended_sf; | |
9964 | *eh++ = 65; | |
9965 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
9966 | *eh++ = DW_CFA_advance_loc + 4; | |
9967 | *eh++ = DW_CFA_restore_extended; | |
9968 | *eh++ = 65; | |
9969 | stub_entry->group->eh_size = eh - base; | |
9970 | } | |
a7f2871e AM |
9971 | return p; |
9972 | } | |
9973 | ||
176a0d42 AM |
9974 | static Elf_Internal_Rela * |
9975 | get_relocs (asection *sec, int count) | |
9976 | { | |
9977 | Elf_Internal_Rela *relocs; | |
9978 | struct bfd_elf_section_data *elfsec_data; | |
9979 | ||
9980 | elfsec_data = elf_section_data (sec); | |
9981 | relocs = elfsec_data->relocs; | |
9982 | if (relocs == NULL) | |
9983 | { | |
9984 | bfd_size_type relsize; | |
9985 | relsize = sec->reloc_count * sizeof (*relocs); | |
9986 | relocs = bfd_alloc (sec->owner, relsize); | |
9987 | if (relocs == NULL) | |
9988 | return NULL; | |
9989 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
9990 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
9991 | sizeof (Elf_Internal_Shdr)); | |
9992 | if (elfsec_data->rela.hdr == NULL) | |
9993 | return NULL; | |
9994 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
9995 | * sizeof (Elf64_External_Rela)); | |
9996 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
9997 | sec->reloc_count = 0; |
9998 | } | |
9999 | relocs += sec->reloc_count; | |
10000 | sec->reloc_count += count; | |
10001 | return relocs; | |
10002 | } | |
10003 | ||
aa374f67 | 10004 | static bfd_vma |
25f53a85 | 10005 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10006 | struct ppc_stub_hash_entry *stub_entry) |
10007 | { | |
25f53a85 | 10008 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 10009 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
10010 | |
10011 | if (r2off == 0) | |
10012 | { | |
10013 | /* Support linking -R objects. Get the toc pointer from the | |
10014 | opd entry. */ | |
10015 | char buf[8]; | |
b9e5796b AM |
10016 | if (!htab->opd_abi) |
10017 | return r2off; | |
aa374f67 AM |
10018 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10019 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10020 | ||
10021 | if (strcmp (opd->name, ".opd") != 0 | |
10022 | || opd->reloc_count != 0) | |
10023 | { | |
2cdcc330 AM |
10024 | info->callbacks->einfo |
10025 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
10026 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 10027 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 10028 | return (bfd_vma) -1; |
aa374f67 AM |
10029 | } |
10030 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 10031 | return (bfd_vma) -1; |
aa374f67 | 10032 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 10033 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 10034 | } |
6f20ed8a | 10035 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
10036 | return r2off; |
10037 | } | |
10038 | ||
b34976b6 | 10039 | static bfd_boolean |
4ce794b7 | 10040 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10041 | { |
721956f4 AM |
10042 | struct ppc_stub_hash_entry *stub_entry; |
10043 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10044 | struct bfd_link_info *info; |
10045 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10046 | bfd_byte *loc; |
10047 | bfd_byte *p; | |
1aa42141 | 10048 | bfd_vma targ, off; |
176a0d42 | 10049 | Elf_Internal_Rela *r; |
e054468f | 10050 | asection *plt; |
5d1634d7 | 10051 | |
721956f4 AM |
10052 | /* Massage our args to the form they really have. */ |
10053 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10054 | info = in_arg; |
5d1634d7 | 10055 | |
5d1634d7 | 10056 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10057 | if (htab == NULL) |
10058 | return FALSE; | |
5d1634d7 | 10059 | |
1aa42141 | 10060 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 10061 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10062 | |
4ce794b7 | 10063 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10064 | switch (stub_entry->stub_type) |
5d1634d7 | 10065 | { |
721956f4 | 10066 | case ppc_stub_long_branch: |
ad8e1ba5 | 10067 | case ppc_stub_long_branch_r2off: |
721956f4 | 10068 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 10069 | targ = (stub_entry->target_value |
6911b7dc AM |
10070 | + stub_entry->target_section->output_offset |
10071 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 10072 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 10073 | |
721956f4 | 10074 | /* And this is where we are coming from. */ |
1aa42141 AM |
10075 | off = (stub_entry->stub_offset |
10076 | + stub_entry->group->stub_sec->output_offset | |
10077 | + stub_entry->group->stub_sec->output_section->vma); | |
10078 | off = targ - off; | |
e86ce104 | 10079 | |
9e390558 | 10080 | p = loc; |
ac2df442 | 10081 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 10082 | { |
25f53a85 | 10083 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10084 | |
a7c49797 | 10085 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10086 | { |
10087 | htab->stub_error = TRUE; | |
10088 | return FALSE; | |
10089 | } | |
9e390558 AM |
10090 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
10091 | p += 4; | |
ac2df442 AM |
10092 | if (PPC_HA (r2off) != 0) |
10093 | { | |
e7d1c40c | 10094 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10095 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
10096 | p += 4; | |
a7c49797 AM |
10097 | } |
10098 | if (PPC_LO (r2off) != 0) | |
10099 | { | |
10100 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
10101 | ADDI_R2_R2 | PPC_LO (r2off), p); |
10102 | p += 4; | |
ac2df442 | 10103 | } |
9e390558 | 10104 | off -= p - loc; |
ad8e1ba5 | 10105 | } |
9e390558 AM |
10106 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
10107 | p += 4; | |
ad8e1ba5 | 10108 | |
5c3dead3 AM |
10109 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10110 | { | |
cf97bcb0 AM |
10111 | _bfd_error_handler |
10112 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 10113 | stub_entry->root.string); |
5c3dead3 AM |
10114 | htab->stub_error = TRUE; |
10115 | return FALSE; | |
10116 | } | |
ee75fd95 AM |
10117 | |
10118 | if (info->emitrelocations) | |
10119 | { | |
6f20ed8a | 10120 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
10121 | if (r == NULL) |
10122 | return FALSE; | |
9e390558 | 10123 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 10124 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 10125 | r->r_addend = targ; |
ee75fd95 AM |
10126 | if (stub_entry->h != NULL) |
10127 | { | |
10128 | struct elf_link_hash_entry **hashes; | |
10129 | unsigned long symndx; | |
10130 | struct ppc_link_hash_entry *h; | |
10131 | ||
e7d1c40c | 10132 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10133 | if (hashes == NULL) |
10134 | { | |
10135 | bfd_size_type hsize; | |
10136 | ||
10137 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10138 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10139 | if (hashes == NULL) |
10140 | return FALSE; | |
e7d1c40c | 10141 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10142 | htab->stub_globals = 1; |
10143 | } | |
10144 | symndx = htab->stub_globals++; | |
10145 | h = stub_entry->h; | |
10146 | hashes[symndx] = &h->elf; | |
10147 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10148 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10149 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10150 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10151 | /* H is an opd symbol. The addend must be zero. */ | |
10152 | r->r_addend = 0; | |
10153 | else | |
10154 | { | |
10155 | off = (h->elf.root.u.def.value | |
10156 | + h->elf.root.u.def.section->output_offset | |
10157 | + h->elf.root.u.def.section->output_section->vma); | |
10158 | r->r_addend -= off; | |
10159 | } | |
10160 | } | |
10161 | } | |
721956f4 | 10162 | break; |
e86ce104 | 10163 | |
721956f4 | 10164 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10165 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10166 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10167 | stub_entry->root.string + 9, | |
b34976b6 | 10168 | FALSE, FALSE); |
721956f4 AM |
10169 | if (br_entry == NULL) |
10170 | { | |
cf97bcb0 AM |
10171 | _bfd_error_handler (_("can't find branch stub `%s'"), |
10172 | stub_entry->root.string); | |
b34976b6 AM |
10173 | htab->stub_error = TRUE; |
10174 | return FALSE; | |
721956f4 AM |
10175 | } |
10176 | ||
1aa42141 | 10177 | targ = (stub_entry->target_value |
176a0d42 AM |
10178 | + stub_entry->target_section->output_offset |
10179 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 10180 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 10181 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 10182 | |
1aa42141 | 10183 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 10184 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10185 | |
f94498ff | 10186 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10187 | { |
f94498ff | 10188 | br_entry->iter = 0; |
84f5d08e | 10189 | |
f94498ff | 10190 | if (htab->relbrlt != NULL) |
84f5d08e | 10191 | { |
f94498ff AM |
10192 | /* Create a reloc for the branch lookup table entry. */ |
10193 | Elf_Internal_Rela rela; | |
10194 | bfd_byte *rl; | |
10195 | ||
10196 | rela.r_offset = (br_entry->offset | |
10197 | + htab->brlt->output_offset | |
10198 | + htab->brlt->output_section->vma); | |
10199 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 10200 | rela.r_addend = targ; |
f94498ff AM |
10201 | |
10202 | rl = htab->relbrlt->contents; | |
10203 | rl += (htab->relbrlt->reloc_count++ | |
10204 | * sizeof (Elf64_External_Rela)); | |
10205 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10206 | } | |
10207 | else if (info->emitrelocations) | |
10208 | { | |
176a0d42 AM |
10209 | r = get_relocs (htab->brlt, 1); |
10210 | if (r == NULL) | |
10211 | return FALSE; | |
10212 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10213 | normal reloc processing. Symbols and offsets are not | |
10214 | translated from input file to output file form, so | |
10215 | set up the offset per the output file. */ | |
f94498ff AM |
10216 | r->r_offset = (br_entry->offset |
10217 | + htab->brlt->output_offset | |
10218 | + htab->brlt->output_section->vma); | |
10219 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 10220 | r->r_addend = targ; |
84f5d08e | 10221 | } |
84f5d08e | 10222 | } |
721956f4 | 10223 | |
1aa42141 | 10224 | targ = (br_entry->offset |
176a0d42 AM |
10225 | + htab->brlt->output_offset |
10226 | + htab->brlt->output_section->vma); | |
10227 | ||
1aa42141 AM |
10228 | off = (elf_gp (info->output_bfd) |
10229 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
10230 | off = targ - off; | |
721956f4 | 10231 | |
ad8e1ba5 | 10232 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10233 | { |
25f53a85 | 10234 | info->callbacks->einfo |
c1c8c1ef | 10235 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 10236 | stub_entry->root.string); |
5d1634d7 | 10237 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10238 | htab->stub_error = TRUE; |
10239 | return FALSE; | |
5d1634d7 | 10240 | } |
41bd81ab | 10241 | |
176a0d42 AM |
10242 | if (info->emitrelocations) |
10243 | { | |
6f20ed8a | 10244 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
10245 | if (r == NULL) |
10246 | return FALSE; | |
6f20ed8a | 10247 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
10248 | if (bfd_big_endian (info->output_bfd)) |
10249 | r[0].r_offset += 2; | |
00f412ee | 10250 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10251 | r[0].r_offset += 4; |
10252 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 10253 | r[0].r_addend = targ; |
176a0d42 AM |
10254 | if (PPC_HA (off) != 0) |
10255 | { | |
10256 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10257 | r[1].r_offset = r[0].r_offset + 4; | |
10258 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10259 | r[1].r_addend = r[0].r_addend; | |
10260 | } | |
10261 | } | |
10262 | ||
9e390558 | 10263 | p = loc; |
00f412ee | 10264 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10265 | { |
176a0d42 | 10266 | if (PPC_HA (off) != 0) |
ac2df442 | 10267 | { |
e7d1c40c | 10268 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10269 | ADDIS_R12_R2 | PPC_HA (off), p); |
10270 | p += 4; | |
e7d1c40c | 10271 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10272 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
10273 | } |
10274 | else | |
9e390558 AM |
10275 | bfd_put_32 (htab->params->stub_bfd, |
10276 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
10277 | } |
10278 | else | |
10279 | { | |
25f53a85 | 10280 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10281 | |
a7c49797 | 10282 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10283 | { |
10284 | htab->stub_error = TRUE; | |
10285 | return FALSE; | |
10286 | } | |
ad8e1ba5 | 10287 | |
9e390558 AM |
10288 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
10289 | p += 4; | |
176a0d42 | 10290 | if (PPC_HA (off) != 0) |
ac2df442 | 10291 | { |
e7d1c40c | 10292 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
10293 | ADDIS_R12_R2 | PPC_HA (off), p); |
10294 | p += 4; | |
e7d1c40c | 10295 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10296 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
10297 | } |
10298 | else | |
9e390558 | 10299 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
10300 | |
10301 | if (PPC_HA (r2off) != 0) | |
10302 | { | |
9e390558 | 10303 | p += 4; |
e7d1c40c | 10304 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10305 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
10306 | } |
10307 | if (PPC_LO (r2off) != 0) | |
10308 | { | |
9e390558 | 10309 | p += 4; |
e7d1c40c | 10310 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 10311 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 10312 | } |
ad8e1ba5 | 10313 | } |
9e390558 AM |
10314 | p += 4; |
10315 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
10316 | p += 4; | |
407aa07c AM |
10317 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
10318 | p += 4; | |
721956f4 | 10319 | break; |
5d1634d7 | 10320 | |
05d0e962 AM |
10321 | case ppc_stub_long_branch_notoc: |
10322 | case ppc_stub_long_branch_both: | |
10323 | case ppc_stub_plt_branch_notoc: | |
10324 | case ppc_stub_plt_branch_both: | |
10325 | case ppc_stub_plt_call_notoc: | |
10326 | case ppc_stub_plt_call_both: | |
10327 | p = loc; | |
10328 | off = (8 + stub_entry->stub_offset | |
10329 | + stub_entry->group->stub_sec->output_offset | |
10330 | + stub_entry->group->stub_sec->output_section->vma); | |
10331 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
10332 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
10333 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10334 | { | |
10335 | off += 4; | |
10336 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
10337 | p += 4; | |
10338 | } | |
10339 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
10340 | { | |
10341 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
10342 | if (targ >= (bfd_vma) -2) | |
10343 | abort (); | |
10344 | ||
10345 | plt = htab->elf.splt; | |
10346 | if (!htab->elf.dynamic_sections_created | |
10347 | || stub_entry->h == NULL | |
10348 | || stub_entry->h->elf.dynindx == -1) | |
10349 | { | |
10350 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
10351 | plt = htab->elf.iplt; | |
10352 | else | |
10353 | plt = htab->pltlocal; | |
10354 | } | |
10355 | targ += plt->output_offset + plt->output_section->vma; | |
10356 | } | |
10357 | else | |
10358 | targ = (stub_entry->target_value | |
10359 | + stub_entry->target_section->output_offset | |
10360 | + stub_entry->target_section->output_section->vma); | |
10361 | off = targ - off; | |
10362 | bfd_put_32 (htab->params->stub_bfd, MFLR_R12, p); | |
10363 | p += 4; | |
10364 | bfd_put_32 (htab->params->stub_bfd, BCL_20_31, p); | |
10365 | p += 4; | |
10366 | bfd_put_32 (htab->params->stub_bfd, MFLR_R11, p); | |
10367 | p += 4; | |
10368 | bfd_put_32 (htab->params->stub_bfd, MTLR_R12, p); | |
10369 | p += 4; | |
10370 | p = build_offset (htab->params->stub_bfd, p, off, | |
10371 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
10372 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc) | |
10373 | { | |
10374 | off += 8; | |
10375 | bfd_put_32 (htab->params->stub_bfd, | |
10376 | B_DOT | ((off - (p - loc)) & 0x3fffffc), p); | |
10377 | } | |
10378 | else if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
10379 | { | |
10380 | off += 12; | |
10381 | bfd_put_32 (htab->params->stub_bfd, | |
10382 | B_DOT | ((off - (p - loc)) & 0x3fffffc), p); | |
10383 | } | |
10384 | else | |
10385 | { | |
10386 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
10387 | p += 4; | |
10388 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
10389 | } | |
10390 | p += 4; | |
df136d64 AM |
10391 | |
10392 | if (htab->glink_eh_frame != NULL | |
10393 | && htab->glink_eh_frame->size != 0) | |
10394 | { | |
10395 | bfd_byte *base, *eh; | |
10396 | unsigned int lr_used, delta; | |
10397 | ||
10398 | base = (htab->glink_eh_frame->contents | |
10399 | + stub_entry->group->eh_base + 17); | |
10400 | eh = base + stub_entry->group->eh_size; | |
10401 | lr_used = stub_entry->stub_offset + 8; | |
10402 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
10403 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
10404 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
10405 | lr_used += 4; | |
10406 | delta = lr_used - stub_entry->group->lr_restore; | |
10407 | stub_entry->group->lr_restore = lr_used + 8; | |
10408 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
10409 | *eh++ = DW_CFA_register; | |
10410 | *eh++ = 65; | |
10411 | *eh++ = 12; | |
10412 | *eh++ = DW_CFA_advance_loc + 2; | |
10413 | *eh++ = DW_CFA_restore_extended; | |
10414 | *eh++ = 65; | |
10415 | stub_entry->group->eh_size = eh - base; | |
10416 | } | |
05d0e962 AM |
10417 | break; |
10418 | ||
721956f4 | 10419 | case ppc_stub_plt_call: |
794e51c0 | 10420 | case ppc_stub_plt_call_r2save: |
e054468f | 10421 | if (stub_entry->h != NULL |
b31867b6 AM |
10422 | && stub_entry->h->is_func_descriptor |
10423 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10424 | { |
b31867b6 AM |
10425 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10426 | ||
10427 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 10428 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
10429 | if (fh->elf.root.type == bfd_link_hash_undefined |
10430 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
10431 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 10432 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
10433 | } |
10434 | ||
721956f4 | 10435 | /* Now build the stub. */ |
1aa42141 AM |
10436 | targ = stub_entry->plt_ent->plt.offset & ~1; |
10437 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
10438 | abort (); |
10439 | ||
33e44f2e | 10440 | plt = htab->elf.splt; |
25f23106 AM |
10441 | if (!htab->elf.dynamic_sections_created |
10442 | || stub_entry->h == NULL | |
10443 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
10444 | { |
10445 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
10446 | plt = htab->elf.iplt; | |
10447 | else | |
10448 | plt = htab->pltlocal; | |
10449 | } | |
1aa42141 | 10450 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 10451 | |
1aa42141 AM |
10452 | off = (elf_gp (info->output_bfd) |
10453 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
10454 | off = targ - off; | |
721956f4 | 10455 | |
ad8e1ba5 | 10456 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10457 | { |
25f53a85 | 10458 | info->callbacks->einfo |
695344c0 | 10459 | /* xgettext:c-format */ |
c1c8c1ef | 10460 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
10461 | stub_entry->h != NULL |
10462 | ? stub_entry->h->elf.root.root.string | |
10463 | : "<local sym>"); | |
721956f4 | 10464 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10465 | htab->stub_error = TRUE; |
10466 | return FALSE; | |
721956f4 AM |
10467 | } |
10468 | ||
176a0d42 AM |
10469 | r = NULL; |
10470 | if (info->emitrelocations) | |
10471 | { | |
6f20ed8a | 10472 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
10473 | ((PPC_HA (off) != 0) |
10474 | + (htab->opd_abi | |
e7d1c40c | 10475 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
10476 | && PPC_HA (off + 16) == PPC_HA (off)) |
10477 | : 1))); | |
176a0d42 AM |
10478 | if (r == NULL) |
10479 | return FALSE; | |
6f20ed8a | 10480 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
10481 | if (bfd_big_endian (info->output_bfd)) |
10482 | r[0].r_offset += 2; | |
1aa42141 | 10483 | r[0].r_addend = targ; |
176a0d42 | 10484 | } |
a7f2871e AM |
10485 | if (stub_entry->h != NULL |
10486 | && (stub_entry->h == htab->tls_get_addr_fd | |
10487 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10488 | && htab->params->tls_get_addr_opt) |
794e51c0 | 10489 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10490 | else |
794e51c0 | 10491 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10492 | break; |
10493 | ||
a4b6fadd AM |
10494 | case ppc_stub_save_res: |
10495 | return TRUE; | |
10496 | ||
721956f4 AM |
10497 | default: |
10498 | BFD_FAIL (); | |
b34976b6 | 10499 | return FALSE; |
721956f4 AM |
10500 | } |
10501 | ||
1aa42141 | 10502 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 10503 | |
e7d1c40c | 10504 | if (htab->params->emit_stub_syms) |
97b639ba AM |
10505 | { |
10506 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10507 | size_t len1, len2; |
10508 | char *name; | |
10509 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
10510 | "long_branch", |
10511 | "long_branch", | |
3f6ff479 AM |
10512 | "long_branch", |
10513 | "plt_branch", | |
ee75fd95 | 10514 | "plt_branch", |
05d0e962 AM |
10515 | "plt_branch", |
10516 | "plt_branch", | |
10517 | "plt_call", | |
10518 | "plt_call", | |
794e51c0 | 10519 | "plt_call", |
ee75fd95 AM |
10520 | "plt_call" }; |
10521 | ||
10522 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10523 | len2 = strlen (stub_entry->root.string); | |
10524 | name = bfd_malloc (len1 + len2 + 2); | |
10525 | if (name == NULL) | |
10526 | return FALSE; | |
10527 | memcpy (name, stub_entry->root.string, 9); | |
10528 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10529 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10530 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10531 | if (h == NULL) |
10532 | return FALSE; | |
10533 | if (h->root.type == bfd_link_hash_new) | |
10534 | { | |
10535 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 10536 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 10537 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
10538 | h->ref_regular = 1; |
10539 | h->def_regular = 1; | |
10540 | h->ref_regular_nonweak = 1; | |
10541 | h->forced_local = 1; | |
10542 | h->non_elf = 0; | |
2ec55de3 | 10543 | h->root.linker_def = 1; |
97b639ba AM |
10544 | } |
10545 | } | |
10546 | ||
b34976b6 | 10547 | return TRUE; |
721956f4 AM |
10548 | } |
10549 | ||
10550 | /* As above, but don't actually build the stub. Just bump offset so | |
10551 | we know stub section sizes, and select plt_branch stubs where | |
10552 | long_branch stubs won't do. */ | |
10553 | ||
b34976b6 | 10554 | static bfd_boolean |
4ce794b7 | 10555 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10556 | { |
10557 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10558 | struct bfd_link_info *info; |
721956f4 | 10559 | struct ppc_link_hash_table *htab; |
1aa42141 | 10560 | bfd_vma targ, off; |
721956f4 AM |
10561 | int size; |
10562 | ||
10563 | /* Massage our args to the form they really have. */ | |
10564 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10565 | info = in_arg; |
10566 | ||
10567 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10568 | if (htab == NULL) |
10569 | return FALSE; | |
721956f4 | 10570 | |
1aa42141 AM |
10571 | /* Make a note of the offset within the stubs for this entry. */ |
10572 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
10573 | ||
a4b6fadd AM |
10574 | if (stub_entry->h != NULL |
10575 | && stub_entry->h->save_res | |
10576 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
10577 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
10578 | { | |
10579 | /* Don't make stubs to out-of-line register save/restore | |
10580 | functions. Instead, emit copies of the functions. */ | |
10581 | stub_entry->group->needs_save_res = 1; | |
10582 | stub_entry->stub_type = ppc_stub_save_res; | |
10583 | return TRUE; | |
10584 | } | |
10585 | ||
05d0e962 AM |
10586 | if (stub_entry->stub_type >= ppc_stub_plt_call |
10587 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
721956f4 | 10588 | { |
e054468f | 10589 | asection *plt; |
1aa42141 AM |
10590 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; |
10591 | if (targ >= (bfd_vma) -2) | |
411e1bfb | 10592 | abort (); |
33e44f2e | 10593 | plt = htab->elf.splt; |
25f23106 AM |
10594 | if (!htab->elf.dynamic_sections_created |
10595 | || stub_entry->h == NULL | |
10596 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
10597 | { |
10598 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
10599 | plt = htab->elf.iplt; | |
10600 | else | |
10601 | plt = htab->pltlocal; | |
10602 | } | |
1aa42141 AM |
10603 | targ += plt->output_offset + plt->output_section->vma; |
10604 | ||
05d0e962 AM |
10605 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10606 | { | |
10607 | off = (8 + stub_entry->stub_offset | |
10608 | + stub_entry->group->stub_sec->output_offset | |
10609 | + stub_entry->group->stub_sec->output_section->vma); | |
10610 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
10611 | off += 4; | |
10612 | } | |
10613 | else | |
10614 | off = (elf_gp (info->output_bfd) | |
10615 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
1aa42141 AM |
10616 | |
10617 | if (htab->params->plt_stub_align != 0) | |
10618 | { | |
05d0e962 | 10619 | unsigned pad = plt_stub_pad (htab, stub_entry, targ - off); |
1aa42141 AM |
10620 | |
10621 | stub_entry->group->stub_sec->size += pad; | |
10622 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
05d0e962 AM |
10623 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10624 | off += pad; | |
1aa42141 | 10625 | } |
721956f4 | 10626 | |
05d0e962 | 10627 | off = targ - off; |
794e51c0 | 10628 | size = plt_stub_size (htab, stub_entry, off); |
1aa42141 | 10629 | |
df136d64 AM |
10630 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10631 | { | |
10632 | /* After the bcl, lr has been modified so we need to emit | |
10633 | .eh_frame info saying the return address is in r12. */ | |
10634 | unsigned int lr_used = stub_entry->stub_offset + 8; | |
10635 | unsigned int delta; | |
10636 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
10637 | lr_used += 4; | |
10638 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
10639 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
10640 | DW_CFA_restore_extended 65. */ | |
10641 | delta = lr_used - stub_entry->group->lr_restore; | |
10642 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
10643 | stub_entry->group->lr_restore = lr_used + 8; | |
10644 | } | |
10645 | else | |
176a0d42 | 10646 | { |
05d0e962 AM |
10647 | if (stub_entry->h != NULL |
10648 | && (stub_entry->h == htab->tls_get_addr_fd | |
10649 | || stub_entry->h == htab->tls_get_addr) | |
10650 | && htab->params->tls_get_addr_opt | |
e81b4c93 | 10651 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) |
df136d64 AM |
10652 | { |
10653 | /* After the bctrl, lr has been modified so we need to | |
10654 | emit .eh_frame info saying the return address is | |
10655 | on the stack. In fact we put the EH info specifying | |
10656 | that the return address is on the stack *at* the | |
10657 | call rather than after it, because the EH info for a | |
10658 | call needs to be specified by that point. | |
10659 | See libgcc/unwind-dw2.c execute_cfa_program. */ | |
10660 | unsigned int lr_used = stub_entry->stub_offset + size - 20; | |
10661 | unsigned int delta; | |
10662 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
10663 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
10664 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
10665 | delta = lr_used - stub_entry->group->lr_restore; | |
10666 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
10667 | stub_entry->group->lr_restore = size - 4; | |
10668 | } | |
05d0e962 AM |
10669 | |
10670 | if (info->emitrelocations) | |
10671 | { | |
10672 | stub_entry->group->stub_sec->reloc_count | |
10673 | += ((PPC_HA (off) != 0) | |
10674 | + (htab->opd_abi | |
10675 | ? 2 + (htab->params->plt_static_chain | |
10676 | && PPC_HA (off + 16) == PPC_HA (off)) | |
10677 | : 1)); | |
10678 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
10679 | } | |
176a0d42 | 10680 | } |
721956f4 AM |
10681 | } |
10682 | else | |
10683 | { | |
ad8e1ba5 AM |
10684 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
10685 | variants. */ | |
ac2df442 | 10686 | bfd_vma r2off = 0; |
6911b7dc | 10687 | bfd_vma local_off = 0; |
ac2df442 | 10688 | |
1aa42141 AM |
10689 | targ = (stub_entry->target_value |
10690 | + stub_entry->target_section->output_offset | |
10691 | + stub_entry->target_section->output_section->vma); | |
10692 | off = (stub_entry->stub_offset | |
10693 | + stub_entry->group->stub_sec->output_offset | |
10694 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 10695 | |
ad8e1ba5 AM |
10696 | /* Reset the stub type from the plt variant in case we now |
10697 | can reach with a shorter stub. */ | |
10698 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
10699 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10700 | ||
10701 | size = 4; | |
10702 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
10703 | { | |
25f53a85 | 10704 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 10705 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10706 | { |
10707 | htab->stub_error = TRUE; | |
10708 | return FALSE; | |
10709 | } | |
a7c49797 | 10710 | size = 8; |
ac2df442 | 10711 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
10712 | size += 4; |
10713 | if (PPC_LO (r2off) != 0) | |
10714 | size += 4; | |
1aa42141 | 10715 | off += size - 4; |
ad8e1ba5 | 10716 | } |
05d0e962 AM |
10717 | else if (stub_entry->stub_type >= ppc_stub_long_branch_notoc) |
10718 | { | |
10719 | size = 20 + size_offset (targ - (off + 8)); | |
10720 | if (stub_entry->stub_type > ppc_stub_long_branch_notoc) | |
10721 | size += 4; | |
10722 | off += size - 4; | |
10723 | } | |
1aa42141 | 10724 | off = targ - off; |
ad8e1ba5 | 10725 | |
05d0e962 | 10726 | if (stub_entry->stub_type >= ppc_stub_long_branch_notoc) |
721956f4 | 10727 | { |
df136d64 AM |
10728 | /* After the bcl, lr has been modified so we need to emit |
10729 | .eh_frame info saying the return address is in r12. */ | |
10730 | unsigned int lr_used = stub_entry->stub_offset + 8; | |
10731 | unsigned int delta; | |
10732 | if (stub_entry->stub_type > ppc_stub_long_branch_notoc) | |
10733 | lr_used += 4; | |
10734 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
10735 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
10736 | DW_CFA_restore_extended 65. */ | |
10737 | delta = lr_used - stub_entry->group->lr_restore; | |
10738 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
10739 | stub_entry->group->lr_restore = lr_used + 8; | |
10740 | ||
05d0e962 | 10741 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
721956f4 | 10742 | { |
05d0e962 AM |
10743 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc |
10744 | - ppc_stub_long_branch_notoc); | |
10745 | size += 4; | |
721956f4 | 10746 | } |
05d0e962 AM |
10747 | } |
10748 | else | |
10749 | { | |
10750 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10751 | |
05d0e962 AM |
10752 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
10753 | Do the same for -R objects without function descriptors. */ | |
10754 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
10755 | && r2off == 0 | |
10756 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
10757 | || off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off) | |
721956f4 | 10758 | { |
05d0e962 | 10759 | struct ppc_branch_hash_entry *br_entry; |
63bc6f6c | 10760 | |
05d0e962 AM |
10761 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10762 | stub_entry->root.string + 9, | |
10763 | TRUE, FALSE); | |
10764 | if (br_entry == NULL) | |
84f5d08e | 10765 | { |
05d0e962 AM |
10766 | _bfd_error_handler (_("can't build branch stub `%s'"), |
10767 | stub_entry->root.string); | |
10768 | htab->stub_error = TRUE; | |
10769 | return FALSE; | |
84f5d08e | 10770 | } |
ad8e1ba5 | 10771 | |
05d0e962 AM |
10772 | if (br_entry->iter != htab->stub_iteration) |
10773 | { | |
10774 | br_entry->iter = htab->stub_iteration; | |
10775 | br_entry->offset = htab->brlt->size; | |
10776 | htab->brlt->size += 8; | |
10777 | ||
10778 | if (htab->relbrlt != NULL) | |
10779 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
10780 | else if (info->emitrelocations) | |
10781 | { | |
10782 | htab->brlt->reloc_count += 1; | |
10783 | htab->brlt->flags |= SEC_RELOC; | |
10784 | } | |
10785 | } | |
ac2df442 | 10786 | |
05d0e962 AM |
10787 | targ = (br_entry->offset |
10788 | + htab->brlt->output_offset | |
10789 | + htab->brlt->output_section->vma); | |
10790 | off = (elf_gp (info->output_bfd) | |
10791 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
10792 | off = targ - off; | |
176a0d42 | 10793 | |
05d0e962 AM |
10794 | if (info->emitrelocations) |
10795 | { | |
10796 | stub_entry->group->stub_sec->reloc_count | |
10797 | += 1 + (PPC_HA (off) != 0); | |
10798 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
10799 | } | |
10800 | ||
10801 | stub_entry->stub_type | |
10802 | += ppc_stub_plt_branch - ppc_stub_long_branch; | |
10803 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
10804 | { | |
10805 | size = 12; | |
10806 | if (PPC_HA (off) != 0) | |
10807 | size = 16; | |
10808 | } | |
10809 | else | |
10810 | { | |
10811 | size = 16; | |
10812 | if (PPC_HA (off) != 0) | |
10813 | size += 4; | |
10814 | ||
10815 | if (PPC_HA (r2off) != 0) | |
10816 | size += 4; | |
10817 | if (PPC_LO (r2off) != 0) | |
10818 | size += 4; | |
10819 | } | |
ac2df442 | 10820 | } |
05d0e962 | 10821 | else if (info->emitrelocations) |
ac2df442 | 10822 | { |
05d0e962 AM |
10823 | stub_entry->group->stub_sec->reloc_count += 1; |
10824 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
ac2df442 | 10825 | } |
721956f4 AM |
10826 | } |
10827 | } | |
10828 | ||
6f20ed8a | 10829 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 10830 | return TRUE; |
721956f4 AM |
10831 | } |
10832 | ||
10833 | /* Set up various things so that we can make a list of input sections | |
10834 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 10835 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
10836 | |
10837 | int | |
e7d1c40c | 10838 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 10839 | { |
6f20ed8a | 10840 | unsigned int id; |
721956f4 AM |
10841 | bfd_size_type amt; |
10842 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10843 | ||
4dfe6ac6 NC |
10844 | if (htab == NULL) |
10845 | return -1; | |
4c52953f | 10846 | |
7cf7fcc8 | 10847 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
10848 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
10849 | htab->sec_info = bfd_zmalloc (amt); | |
10850 | if (htab->sec_info == NULL) | |
721956f4 AM |
10851 | return -1; |
10852 | ||
3d6f9012 AM |
10853 | /* Set toc_off for com, und, abs and ind sections. */ |
10854 | for (id = 0; id < 3; id++) | |
6f20ed8a | 10855 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 10856 | |
721956f4 AM |
10857 | return 1; |
10858 | } | |
10859 | ||
927be08e AM |
10860 | /* Set up for first pass at multitoc partitioning. */ |
10861 | ||
10862 | void | |
10863 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
10864 | { | |
10865 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10866 | ||
1c865ab2 | 10867 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
10868 | htab->toc_bfd = NULL; |
10869 | htab->toc_first_sec = NULL; | |
10870 | } | |
10871 | ||
e717da7e AM |
10872 | /* The linker repeatedly calls this function for each TOC input section |
10873 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 10874 | within a group is less than 64k in size. */ |
ad8e1ba5 | 10875 | |
927be08e | 10876 | bfd_boolean |
4ce794b7 | 10877 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
10878 | { |
10879 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 10880 | bfd_vma addr, off, limit; |
ad8e1ba5 | 10881 | |
4dfe6ac6 NC |
10882 | if (htab == NULL) |
10883 | return FALSE; | |
10884 | ||
927be08e | 10885 | if (!htab->second_toc_pass) |
4c52953f | 10886 | { |
927be08e | 10887 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
10888 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
10889 | ||
10890 | if (new_bfd) | |
bf102f86 AM |
10891 | { |
10892 | htab->toc_bfd = isec->owner; | |
10893 | htab->toc_first_sec = isec; | |
10894 | } | |
927be08e | 10895 | |
bf102f86 AM |
10896 | addr = isec->output_offset + isec->output_section->vma; |
10897 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
10898 | limit = 0x80008000; |
10899 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
10900 | limit = 0x10000; | |
10901 | if (off + isec->size > limit) | |
bf102f86 AM |
10902 | { |
10903 | addr = (htab->toc_first_sec->output_offset | |
10904 | + htab->toc_first_sec->output_section->vma); | |
10905 | htab->toc_curr = addr; | |
a27e685f | 10906 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 10907 | } |
99877b66 | 10908 | |
927be08e AM |
10909 | /* toc_curr is the base address of this toc group. Set elf_gp |
10910 | for the input section to be the offset relative to the | |
10911 | output toc base plus 0x8000. Making the input elf_gp an | |
10912 | offset allows us to move the toc as a whole without | |
10913 | recalculating input elf_gp. */ | |
06bcf541 | 10914 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
10915 | off += TOC_BASE_OFF; |
10916 | ||
10917 | /* Die if someone uses a linker script that doesn't keep input | |
10918 | file .toc and .got together. */ | |
a4fd3de5 AM |
10919 | if (new_bfd |
10920 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
10921 | && elf_gp (isec->owner) != off) |
10922 | return FALSE; | |
10923 | ||
10924 | elf_gp (isec->owner) = off; | |
10925 | return TRUE; | |
4c52953f | 10926 | } |
927be08e AM |
10927 | |
10928 | /* During the second pass toc_first_sec points to the start of | |
10929 | a toc group, and toc_curr is used to track the old elf_gp. | |
10930 | We use toc_bfd to ensure we only look at each bfd once. */ | |
10931 | if (htab->toc_bfd == isec->owner) | |
10932 | return TRUE; | |
10933 | htab->toc_bfd = isec->owner; | |
10934 | ||
10935 | if (htab->toc_first_sec == NULL | |
10936 | || htab->toc_curr != elf_gp (isec->owner)) | |
10937 | { | |
10938 | htab->toc_curr = elf_gp (isec->owner); | |
10939 | htab->toc_first_sec = isec; | |
10940 | } | |
10941 | addr = (htab->toc_first_sec->output_offset | |
10942 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 10943 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
10944 | elf_gp (isec->owner) = off; |
10945 | ||
10946 | return TRUE; | |
ad8e1ba5 AM |
10947 | } |
10948 | ||
927be08e AM |
10949 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
10950 | symbol H. */ | |
10951 | ||
10952 | static bfd_boolean | |
10953 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10954 | { | |
10955 | if (h->root.type == bfd_link_hash_indirect) | |
10956 | return TRUE; | |
10957 | ||
927be08e AM |
10958 | merge_got_entries (&h->got.glist); |
10959 | ||
10960 | return TRUE; | |
10961 | } | |
10962 | ||
10963 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
10964 | symbol H. */ | |
10965 | ||
10966 | static bfd_boolean | |
10967 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
10968 | { | |
10969 | struct got_entry *gent; | |
10970 | ||
10971 | if (h->root.type == bfd_link_hash_indirect) | |
10972 | return TRUE; | |
10973 | ||
927be08e AM |
10974 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
10975 | if (!gent->is_indirect) | |
10976 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
10977 | return TRUE; | |
10978 | } | |
10979 | ||
10980 | /* Called on the first multitoc pass after the last call to | |
10981 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
10982 | entries. */ | |
10983 | ||
10984 | bfd_boolean | |
10985 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
10986 | { |
10987 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
10988 | struct bfd *ibfd, *ibfd2; |
10989 | bfd_boolean done_something; | |
10990 | ||
10991 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 10992 | |
7865406b AM |
10993 | if (!htab->do_multi_toc) |
10994 | return FALSE; | |
10995 | ||
d0fae19d | 10996 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
10997 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
10998 | ||
10999 | /* And tlsld_got. */ | |
c72f2fb2 | 11000 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11001 | { |
11002 | struct got_entry *ent, *ent2; | |
11003 | ||
11004 | if (!is_ppc64_elf (ibfd)) | |
11005 | continue; | |
11006 | ||
11007 | ent = ppc64_tlsld_got (ibfd); | |
11008 | if (!ent->is_indirect | |
11009 | && ent->got.offset != (bfd_vma) -1) | |
11010 | { | |
c72f2fb2 | 11011 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11012 | { |
11013 | if (!is_ppc64_elf (ibfd2)) | |
11014 | continue; | |
11015 | ||
11016 | ent2 = ppc64_tlsld_got (ibfd2); | |
11017 | if (!ent2->is_indirect | |
11018 | && ent2->got.offset != (bfd_vma) -1 | |
11019 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11020 | { | |
11021 | ent2->is_indirect = TRUE; | |
11022 | ent2->got.ent = ent; | |
11023 | } | |
11024 | } | |
11025 | } | |
11026 | } | |
11027 | ||
11028 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11029 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11030 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11031 | htab->got_reli_size = 0; |
11032 | ||
c72f2fb2 | 11033 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11034 | { |
11035 | asection *got, *relgot; | |
11036 | ||
11037 | if (!is_ppc64_elf (ibfd)) | |
11038 | continue; | |
11039 | ||
11040 | got = ppc64_elf_tdata (ibfd)->got; | |
11041 | if (got != NULL) | |
11042 | { | |
11043 | got->rawsize = got->size; | |
11044 | got->size = 0; | |
11045 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11046 | relgot->rawsize = relgot->size; | |
11047 | relgot->size = 0; | |
11048 | } | |
11049 | } | |
11050 | ||
11051 | /* Now reallocate the got, local syms first. We don't need to | |
11052 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11053 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11054 | { |
11055 | struct got_entry **lgot_ents; | |
11056 | struct got_entry **end_lgot_ents; | |
11057 | struct plt_entry **local_plt; | |
11058 | struct plt_entry **end_local_plt; | |
f961d9dd | 11059 | unsigned char *lgot_masks; |
927be08e AM |
11060 | bfd_size_type locsymcount; |
11061 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11062 | asection *s; |
927be08e AM |
11063 | |
11064 | if (!is_ppc64_elf (ibfd)) | |
11065 | continue; | |
11066 | ||
11067 | lgot_ents = elf_local_got_ents (ibfd); | |
11068 | if (!lgot_ents) | |
11069 | continue; | |
11070 | ||
11071 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11072 | locsymcount = symtab_hdr->sh_info; | |
11073 | end_lgot_ents = lgot_ents + locsymcount; | |
11074 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11075 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11076 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11077 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11078 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11079 | { | |
11080 | struct got_entry *ent; | |
11081 | ||
11082 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11083 | { |
19e08130 AM |
11084 | unsigned int ent_size = 8; |
11085 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11086 | ||
d0fae19d AM |
11087 | ent->got.offset = s->size; |
11088 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11089 | { |
19e08130 AM |
11090 | ent_size *= 2; |
11091 | rel_size *= 2; | |
11092 | } | |
11093 | s->size += ent_size; | |
37da22e5 | 11094 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 11095 | { |
33e44f2e | 11096 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11097 | htab->got_reli_size += rel_size; |
11098 | } | |
6a3858a6 AM |
11099 | else if (bfd_link_pic (info) |
11100 | && !((ent->tls_type & TLS_TPREL) != 0 | |
11101 | && bfd_link_executable (info))) | |
19e08130 AM |
11102 | { |
11103 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11104 | srel->size += rel_size; | |
d0fae19d AM |
11105 | } |
11106 | } | |
927be08e AM |
11107 | } |
11108 | } | |
11109 | ||
11110 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11111 | ||
c72f2fb2 | 11112 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11113 | { |
11114 | struct got_entry *ent; | |
11115 | ||
11116 | if (!is_ppc64_elf (ibfd)) | |
11117 | continue; | |
11118 | ||
11119 | ent = ppc64_tlsld_got (ibfd); | |
11120 | if (!ent->is_indirect | |
11121 | && ent->got.offset != (bfd_vma) -1) | |
11122 | { | |
11123 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11124 | ent->got.offset = s->size; | |
11125 | s->size += 16; | |
0e1862bb | 11126 | if (bfd_link_pic (info)) |
927be08e AM |
11127 | { |
11128 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11129 | srel->size += sizeof (Elf64_External_Rela); | |
11130 | } | |
11131 | } | |
11132 | } | |
11133 | ||
33e44f2e | 11134 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11135 | if (!done_something) |
c72f2fb2 | 11136 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11137 | { |
11138 | asection *got; | |
11139 | ||
11140 | if (!is_ppc64_elf (ibfd)) | |
11141 | continue; | |
11142 | ||
11143 | got = ppc64_elf_tdata (ibfd)->got; | |
11144 | if (got != NULL) | |
11145 | { | |
11146 | done_something = got->rawsize != got->size; | |
11147 | if (done_something) | |
11148 | break; | |
11149 | } | |
11150 | } | |
11151 | ||
11152 | if (done_something) | |
e7d1c40c | 11153 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11154 | |
11155 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11156 | on input sections. */ | |
11157 | htab->toc_bfd = NULL; | |
11158 | htab->toc_first_sec = NULL; | |
11159 | htab->second_toc_pass = TRUE; | |
11160 | return done_something; | |
11161 | } | |
11162 | ||
11163 | /* Called after second pass of multitoc partitioning. */ | |
11164 | ||
11165 | void | |
11166 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11167 | { | |
11168 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11169 | ||
11170 | /* After the second pass, toc_curr tracks the TOC offset used | |
11171 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11172 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11173 | } |
11174 | ||
9b5ecbd0 AM |
11175 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11176 | calls, then there's no need to use toc adjusting stubs when branching | |
11177 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11178 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11179 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11180 | for a stub was detected. If called from the top level, a return of | |
11181 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11182 | |
11183 | static int | |
4ce794b7 | 11184 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11185 | { |
9b5ecbd0 | 11186 | int ret; |
70cc837d AM |
11187 | |
11188 | /* Mark this section as checked. */ | |
11189 | isec->call_check_done = 1; | |
9b5ecbd0 | 11190 | |
772119ce AM |
11191 | /* We know none of our code bearing sections will need toc stubs. */ |
11192 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11193 | return 0; | |
11194 | ||
eea6121a | 11195 | if (isec->size == 0) |
082c50f8 AM |
11196 | return 0; |
11197 | ||
4c52953f AM |
11198 | if (isec->output_section == NULL) |
11199 | return 0; | |
11200 | ||
4c52953f | 11201 | ret = 0; |
70cc837d | 11202 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11203 | { |
70cc837d AM |
11204 | Elf_Internal_Rela *relstart, *rel; |
11205 | Elf_Internal_Sym *local_syms; | |
11206 | struct ppc_link_hash_table *htab; | |
2917689a | 11207 | |
70cc837d AM |
11208 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11209 | info->keep_memory); | |
11210 | if (relstart == NULL) | |
11211 | return -1; | |
90aecf7a | 11212 | |
70cc837d AM |
11213 | /* Look for branches to outside of this section. */ |
11214 | local_syms = NULL; | |
11215 | htab = ppc_hash_table (info); | |
11216 | if (htab == NULL) | |
11217 | return -1; | |
4c52953f | 11218 | |
70cc837d | 11219 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11220 | { |
70cc837d AM |
11221 | enum elf_ppc64_reloc_type r_type; |
11222 | unsigned long r_symndx; | |
11223 | struct elf_link_hash_entry *h; | |
11224 | struct ppc_link_hash_entry *eh; | |
11225 | Elf_Internal_Sym *sym; | |
11226 | asection *sym_sec; | |
11227 | struct _opd_sec_data *opd; | |
11228 | bfd_vma sym_value; | |
11229 | bfd_vma dest; | |
11230 | ||
11231 | r_type = ELF64_R_TYPE (rel->r_info); | |
11232 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 11233 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
11234 | && r_type != R_PPC64_REL14 |
11235 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d AM |
11236 | && r_type != R_PPC64_REL14_BRNTAKEN |
11237 | && r_type != R_PPC64_PLTCALL) | |
70cc837d | 11238 | continue; |
4c52953f | 11239 | |
70cc837d AM |
11240 | r_symndx = ELF64_R_SYM (rel->r_info); |
11241 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11242 | isec->owner)) | |
4c52953f | 11243 | { |
70cc837d AM |
11244 | ret = -1; |
11245 | break; | |
11246 | } | |
4c52953f | 11247 | |
70cc837d AM |
11248 | /* Calls to dynamic lib functions go through a plt call stub |
11249 | that uses r2. */ | |
11250 | eh = (struct ppc_link_hash_entry *) h; | |
11251 | if (eh != NULL | |
11252 | && (eh->elf.plt.plist != NULL | |
11253 | || (eh->oh != NULL | |
11254 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11255 | { | |
11256 | ret = 1; | |
11257 | break; | |
4c52953f AM |
11258 | } |
11259 | ||
70cc837d AM |
11260 | if (sym_sec == NULL) |
11261 | /* Ignore other undefined symbols. */ | |
4c52953f | 11262 | continue; |
4c52953f | 11263 | |
70cc837d AM |
11264 | /* Assume branches to other sections not included in the |
11265 | link need stubs too, to cover -R and absolute syms. */ | |
11266 | if (sym_sec->output_section == NULL) | |
11267 | { | |
11268 | ret = 1; | |
11269 | break; | |
11270 | } | |
4c52953f | 11271 | |
70cc837d AM |
11272 | if (h == NULL) |
11273 | sym_value = sym->st_value; | |
11274 | else | |
11275 | { | |
11276 | if (h->root.type != bfd_link_hash_defined | |
11277 | && h->root.type != bfd_link_hash_defweak) | |
11278 | abort (); | |
11279 | sym_value = h->root.u.def.value; | |
11280 | } | |
11281 | sym_value += rel->r_addend; | |
4c52953f | 11282 | |
70cc837d AM |
11283 | /* If this branch reloc uses an opd sym, find the code section. */ |
11284 | opd = get_opd_info (sym_sec); | |
11285 | if (opd != NULL) | |
11286 | { | |
11287 | if (h == NULL && opd->adjust != NULL) | |
11288 | { | |
11289 | long adjust; | |
4c52953f | 11290 | |
92a9c616 | 11291 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
11292 | if (adjust == -1) |
11293 | /* Assume deleted functions won't ever be called. */ | |
11294 | continue; | |
11295 | sym_value += adjust; | |
11296 | } | |
4c52953f | 11297 | |
aef36ac1 AM |
11298 | dest = opd_entry_value (sym_sec, sym_value, |
11299 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11300 | if (dest == (bfd_vma) -1) |
11301 | continue; | |
11302 | } | |
11303 | else | |
11304 | dest = (sym_value | |
11305 | + sym_sec->output_offset | |
11306 | + sym_sec->output_section->vma); | |
4c52953f | 11307 | |
70cc837d AM |
11308 | /* Ignore branch to self. */ |
11309 | if (sym_sec == isec) | |
11310 | continue; | |
4c52953f | 11311 | |
70cc837d AM |
11312 | /* If the called function uses the toc, we need a stub. */ |
11313 | if (sym_sec->has_toc_reloc | |
11314 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11315 | { |
70cc837d | 11316 | ret = 1; |
4c52953f AM |
11317 | break; |
11318 | } | |
70cc837d AM |
11319 | |
11320 | /* Assume any branch that needs a long branch stub might in fact | |
11321 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11322 | else if (dest - (isec->output_offset | |
11323 | + isec->output_section->vma | |
6911b7dc AM |
11324 | + rel->r_offset) + (1 << 25) |
11325 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11326 | ? h->other | |
11327 | : sym->st_other)) | |
4c52953f | 11328 | { |
70cc837d AM |
11329 | ret = 1; |
11330 | break; | |
11331 | } | |
11332 | ||
11333 | /* If calling back to a section in the process of being | |
11334 | tested, we can't say for sure that no toc adjusting stubs | |
11335 | are needed, so don't return zero. */ | |
11336 | else if (sym_sec->call_check_in_progress) | |
11337 | ret = 2; | |
11338 | ||
11339 | /* Branches to another section that itself doesn't have any TOC | |
11340 | references are OK. Recursively call ourselves to check. */ | |
11341 | else if (!sym_sec->call_check_done) | |
11342 | { | |
11343 | int recur; | |
11344 | ||
11345 | /* Mark current section as indeterminate, so that other | |
11346 | sections that call back to current won't be marked as | |
11347 | known. */ | |
11348 | isec->call_check_in_progress = 1; | |
11349 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11350 | isec->call_check_in_progress = 0; | |
11351 | ||
4c52953f AM |
11352 | if (recur != 0) |
11353 | { | |
70cc837d AM |
11354 | ret = recur; |
11355 | if (recur != 2) | |
11356 | break; | |
4c52953f AM |
11357 | } |
11358 | } | |
4c52953f | 11359 | } |
70cc837d AM |
11360 | |
11361 | if (local_syms != NULL | |
11362 | && (elf_symtab_hdr (isec->owner).contents | |
11363 | != (unsigned char *) local_syms)) | |
11364 | free (local_syms); | |
11365 | if (elf_section_data (isec)->relocs != relstart) | |
11366 | free (relstart); | |
9b5ecbd0 AM |
11367 | } |
11368 | ||
70cc837d AM |
11369 | if ((ret & 1) == 0 |
11370 | && isec->map_head.s != NULL | |
11371 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11372 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11373 | { | |
11374 | if (isec->map_head.s->has_toc_reloc | |
11375 | || isec->map_head.s->makes_toc_func_call) | |
11376 | ret = 1; | |
11377 | else if (!isec->map_head.s->call_check_done) | |
11378 | { | |
11379 | int recur; | |
11380 | isec->call_check_in_progress = 1; | |
11381 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11382 | isec->call_check_in_progress = 0; | |
11383 | if (recur != 0) | |
11384 | ret = recur; | |
11385 | } | |
11386 | } | |
11387 | ||
11388 | if (ret == 1) | |
11389 | isec->makes_toc_func_call = 1; | |
4c52953f | 11390 | |
9b5ecbd0 AM |
11391 | return ret; |
11392 | } | |
11393 | ||
721956f4 AM |
11394 | /* The linker repeatedly calls this function for each input section, |
11395 | in the order that input sections are linked into output sections. | |
11396 | Build lists of input sections to determine groupings between which | |
11397 | we may insert linker stubs. */ | |
11398 | ||
9b5ecbd0 | 11399 | bfd_boolean |
4ce794b7 | 11400 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11401 | { |
11402 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11403 | ||
4dfe6ac6 NC |
11404 | if (htab == NULL) |
11405 | return FALSE; | |
11406 | ||
734b6cf9 | 11407 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 11408 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 11409 | { |
3d6f9012 AM |
11410 | /* This happens to make the list in reverse order, |
11411 | which is what we want. */ | |
6f20ed8a AM |
11412 | htab->sec_info[isec->id].u.list |
11413 | = htab->sec_info[isec->output_section->id].u.list; | |
11414 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 11415 | } |
ad8e1ba5 | 11416 | |
4c52953f | 11417 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11418 | { |
8b974ba3 AM |
11419 | /* Analyse sections that aren't already flagged as needing a |
11420 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11421 | .fixup contains branches, but only back to the function that | |
11422 | hit an exception. */ | |
11423 | if (!(isec->has_toc_reloc | |
11424 | || (isec->flags & SEC_CODE) == 0 | |
11425 | || strcmp (isec->name, ".fixup") == 0 | |
11426 | || isec->call_check_done)) | |
11427 | { | |
11428 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11429 | return FALSE; |
8b974ba3 AM |
11430 | } |
11431 | /* Make all sections use the TOC assigned for this object file. | |
11432 | This will be wrong for pasted sections; We fix that in | |
11433 | check_pasted_section(). */ | |
11434 | if (elf_gp (isec->owner) != 0) | |
11435 | htab->toc_curr = elf_gp (isec->owner); | |
11436 | } | |
11437 | ||
6f20ed8a | 11438 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11439 | return TRUE; |
721956f4 AM |
11440 | } |
11441 | ||
70cc837d AM |
11442 | /* Check that all .init and .fini sections use the same toc, if they |
11443 | have toc relocs. */ | |
11444 | ||
11445 | static bfd_boolean | |
11446 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11447 | { | |
11448 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11449 | ||
11450 | if (o != NULL) | |
11451 | { | |
11452 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11453 | bfd_vma toc_off = 0; | |
11454 | asection *i; | |
11455 | ||
11456 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11457 | if (i->has_toc_reloc) | |
11458 | { | |
11459 | if (toc_off == 0) | |
6f20ed8a AM |
11460 | toc_off = htab->sec_info[i->id].toc_off; |
11461 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
11462 | return FALSE; |
11463 | } | |
6683a28d AM |
11464 | |
11465 | if (toc_off == 0) | |
11466 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11467 | if (i->makes_toc_func_call) | |
11468 | { | |
6f20ed8a | 11469 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
11470 | break; |
11471 | } | |
11472 | ||
70cc837d AM |
11473 | /* Make sure the whole pasted function uses the same toc offset. */ |
11474 | if (toc_off != 0) | |
11475 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 11476 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
11477 | } |
11478 | return TRUE; | |
11479 | } | |
11480 | ||
11481 | bfd_boolean | |
11482 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11483 | { | |
11484 | return (check_pasted_section (info, ".init") | |
11485 | & check_pasted_section (info, ".fini")); | |
11486 | } | |
11487 | ||
721956f4 AM |
11488 | /* See whether we can group stub sections together. Grouping stub |
11489 | sections may result in fewer stubs. More importantly, we need to | |
11490 | put all .init* and .fini* stubs at the beginning of the .init or | |
11491 | .fini output sections respectively, because glibc splits the | |
11492 | _init and _fini functions into multiple parts. Putting a stub in | |
11493 | the middle of a function is not a good idea. */ | |
11494 | ||
6f20ed8a AM |
11495 | static bfd_boolean |
11496 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
11497 | bfd_size_type stub_group_size, |
11498 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11499 | { |
6f20ed8a AM |
11500 | struct ppc_link_hash_table *htab; |
11501 | asection *osec; | |
7c8fe5c4 AM |
11502 | bfd_boolean suppress_size_errors; |
11503 | ||
6f20ed8a AM |
11504 | htab = ppc_hash_table (info); |
11505 | if (htab == NULL) | |
11506 | return FALSE; | |
11507 | ||
7c8fe5c4 | 11508 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
11509 | if (stub_group_size == 1) |
11510 | { | |
11511 | /* Default values. */ | |
11512 | if (stubs_always_before_branch) | |
09f92717 | 11513 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 11514 | else |
09f92717 | 11515 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
11516 | suppress_size_errors = TRUE; |
11517 | } | |
11518 | ||
6f20ed8a | 11519 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 11520 | { |
6f20ed8a AM |
11521 | asection *tail; |
11522 | ||
11523 | if (osec->id >= htab->sec_info_arr_size) | |
11524 | continue; | |
11525 | ||
11526 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 11527 | while (tail != NULL) |
721956f4 | 11528 | { |
734b6cf9 AM |
11529 | asection *curr; |
11530 | asection *prev; | |
11531 | bfd_size_type total; | |
11532 | bfd_boolean big_sec; | |
11533 | bfd_vma curr_toc; | |
6f20ed8a | 11534 | struct map_stub *group; |
09f92717 | 11535 | bfd_size_type group_size; |
734b6cf9 AM |
11536 | |
11537 | curr = tail; | |
eea6121a | 11538 | total = tail->size; |
09f92717 AM |
11539 | group_size = (ppc64_elf_section_data (tail) != NULL |
11540 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
11541 | ? stub_group_size >> 10 : stub_group_size); | |
11542 | ||
11543 | big_sec = total > group_size; | |
7c8fe5c4 | 11544 | if (big_sec && !suppress_size_errors) |
695344c0 | 11545 | /* xgettext:c-format */ |
871b3ab2 | 11546 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 11547 | tail->owner, tail); |
6f20ed8a | 11548 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 11549 | |
6f20ed8a | 11550 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 11551 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
11552 | < (ppc64_elf_section_data (prev) != NULL |
11553 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 11554 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 11555 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11556 | curr = prev; |
11557 | ||
11558 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 11559 | than group_size and thus can be handled by one stub |
734b6cf9 | 11560 | section. (or the tail section is itself larger than |
09f92717 AM |
11561 | group_size, in which case we may be toast.) We should |
11562 | really be keeping track of the total size of stubs added | |
11563 | here, as stubs contribute to the final output section | |
11564 | size. That's a little tricky, and this way will only | |
11565 | break if stubs added make the total size more than 2^25, | |
11566 | ie. for the default stub_group_size, if stubs total more | |
11567 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
11568 | group = bfd_alloc (curr->owner, sizeof (*group)); |
11569 | if (group == NULL) | |
11570 | return FALSE; | |
11571 | group->link_sec = curr; | |
11572 | group->stub_sec = NULL; | |
a4b6fadd | 11573 | group->needs_save_res = 0; |
df136d64 AM |
11574 | group->lr_restore = 0; |
11575 | group->eh_size = 0; | |
11576 | group->eh_base = 0; | |
a4b6fadd AM |
11577 | group->next = htab->group; |
11578 | htab->group = group; | |
734b6cf9 | 11579 | do |
721956f4 | 11580 | { |
6f20ed8a | 11581 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 11582 | /* Set up this stub group. */ |
6f20ed8a | 11583 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 11584 | } |
734b6cf9 AM |
11585 | while (tail != curr && (tail = prev) != NULL); |
11586 | ||
09f92717 | 11587 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
11588 | bytes before the stub section can be handled by it too. |
11589 | Don't do this if we have a really large section after the | |
11590 | stubs, as adding more stubs increases the chance that | |
11591 | branches may not reach into the stub section. */ | |
11592 | if (!stubs_always_before_branch && !big_sec) | |
11593 | { | |
11594 | total = 0; | |
11595 | while (prev != NULL | |
11596 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11597 | < (ppc64_elf_section_data (prev) != NULL |
11598 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
11599 | ? (group_size = stub_group_size >> 10) |
11600 | : group_size)) | |
6f20ed8a | 11601 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11602 | { |
11603 | tail = prev; | |
6f20ed8a AM |
11604 | prev = htab->sec_info[tail->id].u.list; |
11605 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
11606 | } |
11607 | } | |
11608 | tail = prev; | |
721956f4 AM |
11609 | } |
11610 | } | |
6f20ed8a | 11611 | return TRUE; |
721956f4 AM |
11612 | } |
11613 | ||
58d180e8 AM |
11614 | static const unsigned char glink_eh_frame_cie[] = |
11615 | { | |
11616 | 0, 0, 0, 16, /* length. */ | |
11617 | 0, 0, 0, 0, /* id. */ | |
11618 | 1, /* CIE version. */ | |
11619 | 'z', 'R', 0, /* Augmentation string. */ | |
11620 | 4, /* Code alignment. */ | |
11621 | 0x78, /* Data alignment. */ | |
11622 | 65, /* RA reg. */ | |
11623 | 1, /* Augmentation size. */ | |
11624 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 11625 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
11626 | }; |
11627 | ||
d969d15f AM |
11628 | /* Stripping output sections is normally done before dynamic section |
11629 | symbols have been allocated. This function is called later, and | |
11630 | handles cases like htab->brlt which is mapped to its own output | |
11631 | section. */ | |
11632 | ||
11633 | static void | |
11634 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11635 | { | |
11636 | if (isec->size == 0 | |
11637 | && isec->output_section->size == 0 | |
53d8967a | 11638 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11639 | && !bfd_section_removed_from_list (info->output_bfd, |
11640 | isec->output_section) | |
11641 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11642 | { | |
11643 | isec->output_section->flags |= SEC_EXCLUDE; | |
11644 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11645 | info->output_bfd->section_count--; | |
11646 | } | |
11647 | } | |
11648 | ||
721956f4 AM |
11649 | /* Determine and set the size of the stub section for a final link. |
11650 | ||
11651 | The basic idea here is to examine all the relocations looking for | |
11652 | PC-relative calls to a target that is unreachable with a "bl" | |
11653 | instruction. */ | |
11654 | ||
b34976b6 | 11655 | bfd_boolean |
e7d1c40c | 11656 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
11657 | { |
11658 | bfd_size_type stub_group_size; | |
b34976b6 | 11659 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11660 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11661 | ||
4dfe6ac6 NC |
11662 | if (htab == NULL) |
11663 | return FALSE; | |
11664 | ||
0e1862bb | 11665 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 11666 | htab->params->plt_thread_safe = 1; |
b9e5796b | 11667 | if (!htab->opd_abi) |
e7d1c40c AM |
11668 | htab->params->plt_thread_safe = 0; |
11669 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 11670 | { |
e2458743 | 11671 | static const char *const thread_starter[] = |
794e51c0 AM |
11672 | { |
11673 | "pthread_create", | |
11674 | /* libstdc++ */ | |
11675 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11676 | /* librt */ | |
11677 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11678 | "mq_notify", "create_timer", | |
11679 | /* libanl */ | |
11680 | "getaddrinfo_a", | |
11681 | /* libgomp */ | |
2300b5a1 | 11682 | "GOMP_parallel", |
794e51c0 | 11683 | "GOMP_parallel_start", |
2300b5a1 | 11684 | "GOMP_parallel_loop_static", |
794e51c0 | 11685 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 11686 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 11687 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 11688 | "GOMP_parallel_loop_guided", |
794e51c0 | 11689 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 11690 | "GOMP_parallel_loop_runtime", |
794e51c0 | 11691 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 11692 | "GOMP_parallel_sections", |
68ffbac6 | 11693 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
11694 | /* libgo */ |
11695 | "__go_go", | |
794e51c0 AM |
11696 | }; |
11697 | unsigned i; | |
11698 | ||
a4b6fadd | 11699 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
11700 | { |
11701 | struct elf_link_hash_entry *h; | |
11702 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
11703 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
11704 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
11705 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
11706 | break; |
11707 | } | |
11708 | } | |
e7d1c40c AM |
11709 | stubs_always_before_branch = htab->params->group_size < 0; |
11710 | if (htab->params->group_size < 0) | |
11711 | stub_group_size = -htab->params->group_size; | |
721956f4 | 11712 | else |
e7d1c40c | 11713 | stub_group_size = htab->params->group_size; |
721956f4 | 11714 | |
6f20ed8a AM |
11715 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
11716 | return FALSE; | |
721956f4 | 11717 | |
c9301e31 AM |
11718 | #define STUB_SHRINK_ITER 20 |
11719 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
11720 | exit on a stub section shrinking. This is to break out of a | |
11721 | pathological case where adding stubs on one iteration decreases | |
11722 | section gaps (perhaps due to alignment), which then requires | |
11723 | fewer or smaller stubs on the next iteration. */ | |
11724 | ||
721956f4 AM |
11725 | while (1) |
11726 | { | |
11727 | bfd *input_bfd; | |
11728 | unsigned int bfd_indx; | |
a4b6fadd | 11729 | struct map_stub *group; |
721956f4 AM |
11730 | |
11731 | htab->stub_iteration += 1; | |
721956f4 AM |
11732 | |
11733 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
11734 | input_bfd != NULL; | |
c72f2fb2 | 11735 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
11736 | { |
11737 | Elf_Internal_Shdr *symtab_hdr; | |
11738 | asection *section; | |
6cdc0ccc | 11739 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 11740 | |
0c8d6e5c | 11741 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
11742 | continue; |
11743 | ||
721956f4 | 11744 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 11745 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
11746 | if (symtab_hdr->sh_info == 0) |
11747 | continue; | |
11748 | ||
721956f4 AM |
11749 | /* Walk over each section attached to the input bfd. */ |
11750 | for (section = input_bfd->sections; | |
11751 | section != NULL; | |
11752 | section = section->next) | |
11753 | { | |
721956f4 | 11754 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
11755 | |
11756 | /* If there aren't any relocs, then there's nothing more | |
11757 | to do. */ | |
11758 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
11759 | || (section->flags & SEC_ALLOC) == 0 |
11760 | || (section->flags & SEC_LOAD) == 0 | |
11761 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
11762 | || section->reloc_count == 0) |
11763 | continue; | |
11764 | ||
11765 | /* If this section is a link-once section that will be | |
11766 | discarded, then don't create any stubs. */ | |
11767 | if (section->output_section == NULL | |
927be08e | 11768 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
11769 | continue; |
11770 | ||
1e2f5b6e AM |
11771 | /* Get the relocs. */ |
11772 | internal_relocs | |
4ce794b7 | 11773 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 11774 | info->keep_memory); |
721956f4 | 11775 | if (internal_relocs == NULL) |
1e2f5b6e | 11776 | goto error_ret_free_local; |
721956f4 AM |
11777 | |
11778 | /* Now examine each relocation. */ | |
11779 | irela = internal_relocs; | |
11780 | irelaend = irela + section->reloc_count; | |
11781 | for (; irela < irelaend; irela++) | |
11782 | { | |
4ce794b7 AM |
11783 | enum elf_ppc64_reloc_type r_type; |
11784 | unsigned int r_indx; | |
721956f4 AM |
11785 | enum ppc_stub_type stub_type; |
11786 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 11787 | asection *sym_sec, *code_sec; |
e054468f | 11788 | bfd_vma sym_value, code_value; |
721956f4 | 11789 | bfd_vma destination; |
6911b7dc | 11790 | unsigned long local_off; |
8843416a | 11791 | bfd_boolean ok_dest; |
721956f4 | 11792 | struct ppc_link_hash_entry *hash; |
8387904d | 11793 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
11794 | struct elf_link_hash_entry *h; |
11795 | Elf_Internal_Sym *sym; | |
721956f4 AM |
11796 | char *stub_name; |
11797 | const asection *id_sec; | |
74f0fb50 | 11798 | struct _opd_sec_data *opd; |
e054468f | 11799 | struct plt_entry *plt_ent; |
721956f4 AM |
11800 | |
11801 | r_type = ELF64_R_TYPE (irela->r_info); | |
11802 | r_indx = ELF64_R_SYM (irela->r_info); | |
11803 | ||
4ce794b7 | 11804 | if (r_type >= R_PPC64_max) |
721956f4 AM |
11805 | { |
11806 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 11807 | goto error_ret_free_internal; |
721956f4 AM |
11808 | } |
11809 | ||
11810 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 11811 | if (r_type != R_PPC64_REL24 |
05d0e962 | 11812 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
11813 | && r_type != R_PPC64_REL14 |
11814 | && r_type != R_PPC64_REL14_BRTAKEN | |
11815 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
11816 | continue; |
11817 | ||
11818 | /* Now determine the call target, its name, value, | |
11819 | section. */ | |
411e1bfb AM |
11820 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
11821 | r_indx, input_bfd)) | |
11822 | goto error_ret_free_internal; | |
11823 | hash = (struct ppc_link_hash_entry *) h; | |
11824 | ||
8843416a | 11825 | ok_dest = FALSE; |
8387904d | 11826 | fdh = NULL; |
7fe2b9a6 | 11827 | sym_value = 0; |
411e1bfb | 11828 | if (hash == NULL) |
721956f4 | 11829 | { |
411e1bfb | 11830 | sym_value = sym->st_value; |
c27b8c2a AM |
11831 | if (sym_sec != NULL |
11832 | && sym_sec->output_section != NULL) | |
11833 | ok_dest = TRUE; | |
721956f4 | 11834 | } |
7fe2b9a6 AM |
11835 | else if (hash->elf.root.type == bfd_link_hash_defined |
11836 | || hash->elf.root.type == bfd_link_hash_defweak) | |
11837 | { | |
11838 | sym_value = hash->elf.root.u.def.value; | |
11839 | if (sym_sec->output_section != NULL) | |
11840 | ok_dest = TRUE; | |
11841 | } | |
11842 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
11843 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 11844 | { |
99877b66 | 11845 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
11846 | use the func descriptor sym instead if it is |
11847 | defined. */ | |
ceb1f1ef | 11848 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 11849 | && hash->oh != NULL) |
8387904d | 11850 | { |
8c5b4e52 | 11851 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
11852 | if (fdh->elf.root.type == bfd_link_hash_defined |
11853 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
11854 | { | |
11855 | sym_sec = fdh->elf.root.u.def.section; | |
11856 | sym_value = fdh->elf.root.u.def.value; | |
11857 | if (sym_sec->output_section != NULL) | |
11858 | ok_dest = TRUE; | |
11859 | } | |
99877b66 AM |
11860 | else |
11861 | fdh = NULL; | |
8387904d | 11862 | } |
7fe2b9a6 AM |
11863 | } |
11864 | else | |
11865 | { | |
11866 | bfd_set_error (bfd_error_bad_value); | |
11867 | goto error_ret_free_internal; | |
721956f4 AM |
11868 | } |
11869 | ||
8843416a | 11870 | destination = 0; |
6911b7dc | 11871 | local_off = 0; |
8843416a AM |
11872 | if (ok_dest) |
11873 | { | |
11874 | sym_value += irela->r_addend; | |
11875 | destination = (sym_value | |
11876 | + sym_sec->output_offset | |
11877 | + sym_sec->output_section->vma); | |
6911b7dc AM |
11878 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
11879 | ? hash->elf.other | |
11880 | : sym->st_other); | |
8843416a AM |
11881 | } |
11882 | ||
8387904d | 11883 | code_sec = sym_sec; |
e054468f | 11884 | code_value = sym_value; |
74f0fb50 AM |
11885 | opd = get_opd_info (sym_sec); |
11886 | if (opd != NULL) | |
8387904d AM |
11887 | { |
11888 | bfd_vma dest; | |
11889 | ||
74f0fb50 | 11890 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 11891 | { |
51aecdc5 | 11892 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
11893 | if (adjust == -1) |
11894 | continue; | |
e054468f | 11895 | code_value += adjust; |
8387904d AM |
11896 | sym_value += adjust; |
11897 | } | |
11898 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 11899 | &code_sec, &code_value, FALSE); |
8387904d AM |
11900 | if (dest != (bfd_vma) -1) |
11901 | { | |
11902 | destination = dest; | |
11903 | if (fdh != NULL) | |
11904 | { | |
11905 | /* Fixup old ABI sym to point at code | |
11906 | entry. */ | |
99877b66 | 11907 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 11908 | hash->elf.root.u.def.section = code_sec; |
e054468f | 11909 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
11910 | } |
11911 | } | |
11912 | } | |
11913 | ||
721956f4 | 11914 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 11915 | plt_ent = NULL; |
721956f4 | 11916 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
11917 | &plt_ent, destination, |
11918 | local_off); | |
ad8e1ba5 | 11919 | |
05d0e962 AM |
11920 | if (r_type == R_PPC64_REL24_NOTOC) |
11921 | { | |
11922 | if (stub_type == ppc_stub_plt_call) | |
11923 | stub_type = ppc_stub_plt_call_notoc; | |
11924 | else if (stub_type == ppc_stub_long_branch | |
11925 | || (code_sec != NULL | |
11926 | && code_sec->output_section != NULL | |
11927 | && (((hash ? hash->elf.other : sym->st_other) | |
11928 | & STO_PPC64_LOCAL_MASK) | |
11929 | != 1 << STO_PPC64_LOCAL_BIT))) | |
11930 | stub_type = ppc_stub_long_branch_notoc; | |
11931 | } | |
11932 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
11933 | { |
11934 | /* Check whether we need a TOC adjusting stub. | |
11935 | Since the linker pastes together pieces from | |
11936 | different object files when creating the | |
11937 | _init and _fini functions, it may be that a | |
11938 | call to what looks like a local sym is in | |
11939 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
11940 | if ((code_sec != NULL |
11941 | && code_sec->output_section != NULL | |
11942 | && (htab->sec_info[code_sec->id].toc_off | |
11943 | != htab->sec_info[section->id].toc_off) | |
11944 | && (code_sec->has_toc_reloc | |
11945 | || code_sec->makes_toc_func_call)) | |
11946 | || (((hash ? hash->elf.other : sym->st_other) | |
11947 | & STO_PPC64_LOCAL_MASK) | |
11948 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
11949 | stub_type = ppc_stub_long_branch_r2off; |
11950 | } | |
11951 | ||
721956f4 AM |
11952 | if (stub_type == ppc_stub_none) |
11953 | continue; | |
11954 | ||
411e1bfb AM |
11955 | /* __tls_get_addr calls might be eliminated. */ |
11956 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 11957 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 11958 | && hash != NULL |
8387904d AM |
11959 | && (hash == htab->tls_get_addr |
11960 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
11961 | && section->has_tls_reloc |
11962 | && irela != internal_relocs) | |
11963 | { | |
11964 | /* Get tls info. */ | |
f961d9dd | 11965 | unsigned char *tls_mask; |
411e1bfb | 11966 | |
3a71aa26 | 11967 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
11968 | irela - 1, input_bfd)) |
11969 | goto error_ret_free_internal; | |
37da22e5 | 11970 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
11971 | continue; |
11972 | } | |
11973 | ||
f378ab09 | 11974 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 11975 | { |
6e1816be AM |
11976 | if (!htab->opd_abi |
11977 | && htab->params->plt_localentry0 != 0 | |
11978 | && is_elfv2_localentry0 (&hash->elf)) | |
11979 | htab->has_plt_localentry0 = 1; | |
11980 | else if (irela + 1 < irelaend | |
11981 | && irela[1].r_offset == irela->r_offset + 4 | |
11982 | && (ELF64_R_TYPE (irela[1].r_info) | |
11983 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
11984 | { |
11985 | if (!tocsave_find (htab, INSERT, | |
11986 | &local_syms, irela + 1, input_bfd)) | |
11987 | goto error_ret_free_internal; | |
11988 | } | |
f378ab09 AM |
11989 | else |
11990 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 11991 | } |
3b421ab3 | 11992 | |
721956f4 | 11993 | /* Support for grouping stub sections. */ |
6f20ed8a | 11994 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
11995 | |
11996 | /* Get the name of this stub. */ | |
11997 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
11998 | if (!stub_name) | |
11999 | goto error_ret_free_internal; | |
12000 | ||
12001 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12002 | stub_name, FALSE, FALSE); |
721956f4 AM |
12003 | if (stub_entry != NULL) |
12004 | { | |
05d0e962 AM |
12005 | enum ppc_stub_type old_type; |
12006 | /* A stub has already been created, but it may | |
12007 | not be the required type. We shouldn't be | |
12008 | transitioning from plt_call to long_branch | |
12009 | stubs or vice versa, but we might be | |
12010 | upgrading from plt_call to plt_call_r2save or | |
12011 | from long_branch to long_branch_r2off. */ | |
721956f4 | 12012 | free (stub_name); |
05d0e962 AM |
12013 | old_type = stub_entry->stub_type; |
12014 | switch (old_type) | |
12015 | { | |
12016 | default: | |
12017 | abort (); | |
12018 | ||
12019 | case ppc_stub_save_res: | |
12020 | continue; | |
12021 | ||
12022 | case ppc_stub_plt_call: | |
12023 | case ppc_stub_plt_call_r2save: | |
12024 | case ppc_stub_plt_call_notoc: | |
12025 | case ppc_stub_plt_call_both: | |
12026 | if (stub_type == ppc_stub_plt_call) | |
12027 | continue; | |
12028 | else if (stub_type == ppc_stub_plt_call_r2save) | |
12029 | { | |
12030 | if (old_type == ppc_stub_plt_call_notoc) | |
12031 | stub_type = ppc_stub_plt_call_both; | |
12032 | } | |
12033 | else if (stub_type == ppc_stub_plt_call_notoc) | |
12034 | { | |
12035 | if (old_type == ppc_stub_plt_call_r2save) | |
12036 | stub_type = ppc_stub_plt_call_both; | |
12037 | } | |
12038 | else | |
12039 | abort (); | |
12040 | break; | |
12041 | ||
12042 | case ppc_stub_plt_branch: | |
12043 | case ppc_stub_plt_branch_r2off: | |
12044 | case ppc_stub_plt_branch_notoc: | |
12045 | case ppc_stub_plt_branch_both: | |
12046 | old_type += (ppc_stub_long_branch | |
12047 | - ppc_stub_plt_branch); | |
12048 | /* Fall through. */ | |
12049 | case ppc_stub_long_branch: | |
12050 | case ppc_stub_long_branch_r2off: | |
12051 | case ppc_stub_long_branch_notoc: | |
12052 | case ppc_stub_long_branch_both: | |
12053 | if (stub_type == ppc_stub_long_branch) | |
12054 | continue; | |
12055 | else if (stub_type == ppc_stub_long_branch_r2off) | |
12056 | { | |
12057 | if (old_type == ppc_stub_long_branch_notoc) | |
12058 | stub_type = ppc_stub_long_branch_both; | |
12059 | } | |
12060 | else if (stub_type == ppc_stub_long_branch_notoc) | |
12061 | { | |
12062 | if (old_type == ppc_stub_long_branch_r2off) | |
12063 | stub_type = ppc_stub_long_branch_both; | |
12064 | } | |
12065 | else | |
12066 | abort (); | |
12067 | break; | |
12068 | } | |
12069 | if (old_type < stub_type) | |
794e51c0 | 12070 | stub_entry->stub_type = stub_type; |
721956f4 AM |
12071 | continue; |
12072 | } | |
12073 | ||
25f53a85 | 12074 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12075 | if (stub_entry == NULL) |
12076 | { | |
12077 | free (stub_name); | |
6cdc0ccc AM |
12078 | error_ret_free_internal: |
12079 | if (elf_section_data (section)->relocs == NULL) | |
12080 | free (internal_relocs); | |
12081 | error_ret_free_local: | |
12082 | if (local_syms != NULL | |
12083 | && (symtab_hdr->contents | |
12084 | != (unsigned char *) local_syms)) | |
12085 | free (local_syms); | |
b34976b6 | 12086 | return FALSE; |
721956f4 AM |
12087 | } |
12088 | ||
ad8e1ba5 | 12089 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
12090 | if (stub_type >= ppc_stub_plt_call |
12091 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 12092 | { |
05d0e962 AM |
12093 | stub_entry->target_value = sym_value; |
12094 | stub_entry->target_section = sym_sec; | |
e054468f AM |
12095 | } |
12096 | else | |
12097 | { | |
05d0e962 AM |
12098 | stub_entry->target_value = code_value; |
12099 | stub_entry->target_section = code_sec; | |
e054468f | 12100 | } |
721956f4 | 12101 | stub_entry->h = hash; |
e054468f | 12102 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
12103 | stub_entry->symtype |
12104 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 12105 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12106 | |
12107 | if (stub_entry->h != NULL) | |
12108 | htab->stub_globals += 1; | |
721956f4 AM |
12109 | } |
12110 | ||
12111 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12112 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12113 | free (internal_relocs); |
721956f4 | 12114 | } |
6cdc0ccc AM |
12115 | |
12116 | if (local_syms != NULL | |
12117 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12118 | { | |
12119 | if (!info->keep_memory) | |
12120 | free (local_syms); | |
12121 | else | |
12122 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12123 | } | |
721956f4 AM |
12124 | } |
12125 | ||
5c3dead3 | 12126 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12127 | stub sections. */ |
d4aaa2a0 | 12128 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
12129 | { |
12130 | group->lr_restore = 0; | |
12131 | group->eh_size = 0; | |
12132 | if (group->stub_sec != NULL) | |
12133 | { | |
12134 | asection *stub_sec = group->stub_sec; | |
12135 | ||
12136 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
12137 | || stub_sec->rawsize < stub_sec->size) | |
12138 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12139 | stub_sec->rawsize = stub_sec->size; | |
12140 | stub_sec->size = 0; | |
12141 | stub_sec->reloc_count = 0; | |
12142 | stub_sec->flags &= ~SEC_RELOC; | |
12143 | } | |
12144 | } | |
eea6121a | 12145 | |
ba21f564 AM |
12146 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12147 | || htab->brlt->rawsize < htab->brlt->size) | |
12148 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 12149 | htab->brlt->size = 0; |
84f5d08e AM |
12150 | htab->brlt->reloc_count = 0; |
12151 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12152 | if (htab->relbrlt != NULL) |
eea6121a | 12153 | htab->relbrlt->size = 0; |
721956f4 | 12154 | |
63bc6f6c | 12155 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12156 | |
a4b6fadd AM |
12157 | for (group = htab->group; group != NULL; group = group->next) |
12158 | if (group->needs_save_res) | |
12159 | group->stub_sec->size += htab->sfpr->size; | |
12160 | ||
176a0d42 AM |
12161 | if (info->emitrelocations |
12162 | && htab->glink != NULL && htab->glink->size != 0) | |
12163 | { | |
12164 | htab->glink->reloc_count = 1; | |
12165 | htab->glink->flags |= SEC_RELOC; | |
12166 | } | |
12167 | ||
58d180e8 AM |
12168 | if (htab->glink_eh_frame != NULL |
12169 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 12170 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 12171 | { |
2e0ce1c8 | 12172 | size_t size = 0, align = 4; |
58d180e8 | 12173 | |
d4aaa2a0 | 12174 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
12175 | if (group->eh_size != 0) |
12176 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 12177 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 12178 | size += (24 + align - 1) & -align; |
58d180e8 | 12179 | if (size != 0) |
2e0ce1c8 AM |
12180 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
12181 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
12182 | size = (size + align - 1) & -align; | |
58d180e8 AM |
12183 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12184 | htab->glink_eh_frame->size = size; | |
12185 | } | |
12186 | ||
e7d1c40c | 12187 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
12188 | for (group = htab->group; group != NULL; group = group->next) |
12189 | if (group->stub_sec != NULL) | |
691d2e9a AM |
12190 | { |
12191 | int align = abs (htab->params->plt_stub_align); | |
12192 | group->stub_sec->size | |
12193 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
12194 | } | |
d4aaa2a0 AM |
12195 | |
12196 | for (group = htab->group; group != NULL; group = group->next) | |
12197 | if (group->stub_sec != NULL | |
12198 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 12199 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 12200 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
12201 | break; |
12202 | ||
d4aaa2a0 | 12203 | if (group == NULL |
ba21f564 AM |
12204 | && (htab->brlt->rawsize == htab->brlt->size |
12205 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
12206 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
12207 | && (htab->glink_eh_frame == NULL |
12208 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12209 | break; |
12210 | ||
721956f4 | 12211 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12212 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12213 | } |
12214 | ||
da44f4e5 AM |
12215 | if (htab->glink_eh_frame != NULL |
12216 | && htab->glink_eh_frame->size != 0) | |
12217 | { | |
12218 | bfd_vma val; | |
12219 | bfd_byte *p, *last_fde; | |
12220 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 12221 | struct map_stub *group; |
da44f4e5 | 12222 | |
df136d64 AM |
12223 | /* It is necessary to at least have a rough outline of the |
12224 | linker generated CIEs and FDEs written before | |
12225 | bfd_elf_discard_info is run, in order for these FDEs to be | |
12226 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
12227 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
12228 | if (p == NULL) | |
12229 | return FALSE; | |
12230 | htab->glink_eh_frame->contents = p; | |
12231 | last_fde = p; | |
2e0ce1c8 | 12232 | align = 4; |
da44f4e5 AM |
12233 | |
12234 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12235 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 12236 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 12237 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 12238 | p += last_fde_len + 4; |
da44f4e5 | 12239 | |
d4aaa2a0 | 12240 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 12241 | if (group->eh_size != 0) |
da44f4e5 | 12242 | { |
df136d64 | 12243 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 12244 | last_fde = p; |
df136d64 | 12245 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 12246 | /* FDE length. */ |
2e0ce1c8 | 12247 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
12248 | p += 4; |
12249 | /* CIE pointer. */ | |
12250 | val = p - htab->glink_eh_frame->contents; | |
12251 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12252 | p += 4; | |
12253 | /* Offset to stub section, written later. */ | |
12254 | p += 4; | |
12255 | /* stub section size. */ | |
d4aaa2a0 | 12256 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
12257 | p += 4; |
12258 | /* Augmentation. */ | |
12259 | p += 1; | |
df136d64 AM |
12260 | /* Make sure we don't have all nops. This is enough for |
12261 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
12262 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 12263 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
12264 | } |
12265 | if (htab->glink != NULL && htab->glink->size != 0) | |
12266 | { | |
12267 | last_fde = p; | |
2e0ce1c8 | 12268 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 12269 | /* FDE length. */ |
2e0ce1c8 | 12270 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
12271 | p += 4; |
12272 | /* CIE pointer. */ | |
12273 | val = p - htab->glink_eh_frame->contents; | |
12274 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12275 | p += 4; | |
12276 | /* Offset to .glink, written later. */ | |
12277 | p += 4; | |
12278 | /* .glink size. */ | |
12279 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
12280 | p += 4; | |
12281 | /* Augmentation. */ | |
12282 | p += 1; | |
12283 | ||
12284 | *p++ = DW_CFA_advance_loc + 1; | |
12285 | *p++ = DW_CFA_register; | |
12286 | *p++ = 65; | |
9f08fa5c | 12287 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 12288 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
12289 | *p++ = DW_CFA_restore_extended; |
12290 | *p++ = 65; | |
2e0ce1c8 | 12291 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
12292 | } |
12293 | /* Subsume any padding into the last FDE if user .eh_frame | |
12294 | sections are aligned more than glink_eh_frame. Otherwise any | |
12295 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 12296 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 12297 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 12298 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
12299 | htab->glink_eh_frame->size = size + pad; |
12300 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
12301 | } | |
12302 | ||
d969d15f AM |
12303 | maybe_strip_output (info, htab->brlt); |
12304 | if (htab->glink_eh_frame != NULL) | |
12305 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12306 | |
b34976b6 | 12307 | return TRUE; |
721956f4 AM |
12308 | } |
12309 | ||
12310 | /* Called after we have determined section placement. If sections | |
805fc799 | 12311 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12312 | |
805fc799 | 12313 | bfd_vma |
1c865ab2 | 12314 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12315 | { |
805fc799 | 12316 | asection *s; |
a27e685f | 12317 | bfd_vma TOCstart, adjust; |
721956f4 | 12318 | |
43417696 AM |
12319 | if (info != NULL) |
12320 | { | |
12321 | struct elf_link_hash_entry *h; | |
12322 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
12323 | ||
12324 | if (is_elf_hash_table (htab) | |
12325 | && htab->hgot != NULL) | |
12326 | h = htab->hgot; | |
12327 | else | |
12328 | { | |
12329 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
12330 | if (is_elf_hash_table (htab)) | |
12331 | htab->hgot = h; | |
12332 | } | |
12333 | if (h != NULL | |
12334 | && h->root.type == bfd_link_hash_defined | |
12335 | && !h->root.linker_def | |
12336 | && (!is_elf_hash_table (htab) | |
12337 | || h->def_regular)) | |
12338 | { | |
12339 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
12340 | + h->root.u.def.section->output_offset | |
12341 | + h->root.u.def.section->output_section->vma); | |
12342 | _bfd_set_gp_value (obfd, TOCstart); | |
12343 | return TOCstart; | |
12344 | } | |
12345 | } | |
12346 | ||
805fc799 AM |
12347 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12348 | order. The TOC starts where the first of these sections starts. */ | |
12349 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12350 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12351 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12352 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12353 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12354 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12355 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12356 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12357 | { |
12358 | /* This may happen for | |
12359 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12360 | .toc directive | |
12361 | o bad linker script | |
12362 | o --gc-sections and empty TOC sections | |
12363 | ||
12364 | FIXME: Warn user? */ | |
12365 | ||
12366 | /* Look for a likely section. We probably won't even be | |
12367 | using TOCstart. */ | |
12368 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12369 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12370 | | SEC_EXCLUDE)) | |
805fc799 AM |
12371 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12372 | break; | |
721956f4 | 12373 | if (s == NULL) |
805fc799 | 12374 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12375 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12376 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12377 | break; | |
721956f4 | 12378 | if (s == NULL) |
805fc799 | 12379 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12380 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12381 | == SEC_ALLOC) | |
805fc799 | 12382 | break; |
721956f4 | 12383 | if (s == NULL) |
805fc799 | 12384 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12385 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12386 | break; |
12387 | } | |
721956f4 | 12388 | |
805fc799 AM |
12389 | TOCstart = 0; |
12390 | if (s != NULL) | |
12391 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12392 | |
a27e685f AM |
12393 | /* Force alignment. */ |
12394 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
12395 | TOCstart -= adjust; | |
1c865ab2 AM |
12396 | _bfd_set_gp_value (obfd, TOCstart); |
12397 | ||
810d4e75 | 12398 | if (info != NULL && s != NULL) |
1c865ab2 AM |
12399 | { |
12400 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12401 | ||
810d4e75 AM |
12402 | if (htab != NULL) |
12403 | { | |
12404 | if (htab->elf.hgot != NULL) | |
12405 | { | |
a27e685f | 12406 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
12407 | htab->elf.hgot->root.u.def.section = s; |
12408 | } | |
12409 | } | |
12410 | else | |
1c865ab2 | 12411 | { |
810d4e75 AM |
12412 | struct bfd_link_hash_entry *bh = NULL; |
12413 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
12414 | s, TOC_BASE_OFF - adjust, |
12415 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
12416 | } |
12417 | } | |
805fc799 | 12418 | return TOCstart; |
721956f4 AM |
12419 | } |
12420 | ||
a345bc8d | 12421 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 12422 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
12423 | |
12424 | static bfd_boolean | |
49c09209 | 12425 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
12426 | { |
12427 | struct bfd_link_info *info; | |
12428 | struct ppc_link_hash_table *htab; | |
49c09209 | 12429 | struct plt_entry *ent; |
a345bc8d AM |
12430 | asection *s; |
12431 | ||
12432 | if (h->root.type == bfd_link_hash_indirect) | |
12433 | return TRUE; | |
12434 | ||
49c09209 AM |
12435 | info = inf; |
12436 | htab = ppc_hash_table (info); | |
12437 | if (htab == NULL) | |
12438 | return FALSE; | |
12439 | ||
12440 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
12441 | if (ent->plt.offset != (bfd_vma) -1) | |
12442 | { | |
12443 | /* This symbol has an entry in the procedure linkage | |
12444 | table. Set it up. */ | |
12445 | Elf_Internal_Rela rela; | |
2d7ad24e | 12446 | asection *plt, *relplt; |
49c09209 AM |
12447 | bfd_byte *loc; |
12448 | ||
12449 | if (!htab->elf.dynamic_sections_created | |
12450 | || h->dynindx == -1) | |
12451 | { | |
12452 | if (!(h->def_regular | |
12453 | && (h->root.type == bfd_link_hash_defined | |
12454 | || h->root.type == bfd_link_hash_defweak))) | |
12455 | continue; | |
2d7ad24e AM |
12456 | if (h->type == STT_GNU_IFUNC) |
12457 | { | |
12458 | plt = htab->elf.iplt; | |
12459 | relplt = htab->elf.irelplt; | |
12460 | htab->local_ifunc_resolver = 1; | |
12461 | if (htab->opd_abi) | |
12462 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
12463 | else | |
12464 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12465 | } | |
49c09209 | 12466 | else |
2d7ad24e AM |
12467 | { |
12468 | plt = htab->pltlocal; | |
12469 | if (bfd_link_pic (info)) | |
12470 | { | |
12471 | relplt = htab->relpltlocal; | |
12472 | if (htab->opd_abi) | |
12473 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
12474 | else | |
12475 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
12476 | } | |
12477 | else | |
12478 | relplt = NULL; | |
12479 | } | |
49c09209 AM |
12480 | rela.r_addend = (h->root.u.def.value |
12481 | + h->root.u.def.section->output_offset | |
12482 | + h->root.u.def.section->output_section->vma | |
12483 | + ent->addend); | |
2d7ad24e AM |
12484 | |
12485 | if (relplt == NULL) | |
12486 | { | |
12487 | loc = plt->contents + ent->plt.offset; | |
12488 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
12489 | if (htab->opd_abi) | |
12490 | { | |
12491 | bfd_vma toc = elf_gp (info->output_bfd); | |
12492 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
12493 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
12494 | } | |
12495 | } | |
12496 | else | |
12497 | { | |
12498 | rela.r_offset = (plt->output_section->vma | |
12499 | + plt->output_offset | |
12500 | + ent->plt.offset); | |
12501 | loc = relplt->contents + (relplt->reloc_count++ | |
12502 | * sizeof (Elf64_External_Rela)); | |
12503 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
12504 | } | |
49c09209 AM |
12505 | } |
12506 | else | |
12507 | { | |
12508 | rela.r_offset = (htab->elf.splt->output_section->vma | |
12509 | + htab->elf.splt->output_offset | |
12510 | + ent->plt.offset); | |
12511 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
12512 | rela.r_addend = ent->addend; | |
12513 | loc = (htab->elf.srelplt->contents | |
12514 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
12515 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
12516 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
12517 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 12518 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 12519 | } |
49c09209 AM |
12520 | } |
12521 | ||
a345bc8d AM |
12522 | if (!h->pointer_equality_needed) |
12523 | return TRUE; | |
12524 | ||
12525 | if (h->def_regular) | |
12526 | return TRUE; | |
12527 | ||
9e390558 | 12528 | s = htab->global_entry; |
49c09209 AM |
12529 | if (s == NULL || s->size == 0) |
12530 | return TRUE; | |
12531 | ||
12532 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
12533 | if (ent->plt.offset != (bfd_vma) -1 | |
12534 | && ent->addend == 0) | |
a345bc8d AM |
12535 | { |
12536 | bfd_byte *p; | |
12537 | asection *plt; | |
12538 | bfd_vma off; | |
12539 | ||
a345bc8d | 12540 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12541 | plt = htab->elf.splt; |
a345bc8d AM |
12542 | if (!htab->elf.dynamic_sections_created |
12543 | || h->dynindx == -1) | |
2d7ad24e AM |
12544 | { |
12545 | if (h->type == STT_GNU_IFUNC) | |
12546 | plt = htab->elf.iplt; | |
12547 | else | |
12548 | plt = htab->pltlocal; | |
12549 | } | |
49c09209 | 12550 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
12551 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
12552 | ||
12553 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12554 | { | |
12555 | info->callbacks->einfo | |
c1c8c1ef | 12556 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
12557 | h->root.root.string); |
12558 | bfd_set_error (bfd_error_bad_value); | |
12559 | htab->stub_error = TRUE; | |
12560 | } | |
12561 | ||
7341d5e2 AM |
12562 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
12563 | if (htab->params->emit_stub_syms) | |
12564 | { | |
12565 | size_t len = strlen (h->root.root.string); | |
12566 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
12567 | ||
12568 | if (name == NULL) | |
12569 | return FALSE; | |
12570 | ||
12571 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
12572 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
12573 | if (h == NULL) | |
12574 | return FALSE; | |
12575 | if (h->root.type == bfd_link_hash_new) | |
12576 | { | |
12577 | h->root.type = bfd_link_hash_defined; | |
12578 | h->root.u.def.section = s; | |
12579 | h->root.u.def.value = p - s->contents; | |
12580 | h->ref_regular = 1; | |
12581 | h->def_regular = 1; | |
12582 | h->ref_regular_nonweak = 1; | |
12583 | h->forced_local = 1; | |
12584 | h->non_elf = 0; | |
2ec55de3 | 12585 | h->root.linker_def = 1; |
7341d5e2 AM |
12586 | } |
12587 | } | |
12588 | ||
a345bc8d AM |
12589 | if (PPC_HA (off) != 0) |
12590 | { | |
12591 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12592 | p += 4; | |
12593 | } | |
12594 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12595 | p += 4; | |
12596 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12597 | p += 4; | |
407aa07c | 12598 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
12599 | break; |
12600 | } | |
12601 | return TRUE; | |
12602 | } | |
12603 | ||
49c09209 AM |
12604 | /* Write PLT relocs for locals. */ |
12605 | ||
12606 | static bfd_boolean | |
12607 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
12608 | { | |
12609 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12610 | bfd *ibfd; | |
12611 | ||
12612 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
12613 | { | |
12614 | struct got_entry **lgot_ents, **end_lgot_ents; | |
12615 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
12616 | Elf_Internal_Shdr *symtab_hdr; | |
12617 | bfd_size_type locsymcount; | |
12618 | Elf_Internal_Sym *local_syms = NULL; | |
12619 | struct plt_entry *ent; | |
12620 | ||
12621 | if (!is_ppc64_elf (ibfd)) | |
12622 | continue; | |
12623 | ||
12624 | lgot_ents = elf_local_got_ents (ibfd); | |
12625 | if (!lgot_ents) | |
12626 | continue; | |
12627 | ||
12628 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12629 | locsymcount = symtab_hdr->sh_info; | |
12630 | end_lgot_ents = lgot_ents + locsymcount; | |
12631 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12632 | end_local_plt = local_plt + locsymcount; | |
12633 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
12634 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
12635 | if (ent->plt.offset != (bfd_vma) -1) | |
12636 | { | |
12637 | Elf_Internal_Sym *sym; | |
12638 | asection *sym_sec; | |
12639 | asection *plt, *relplt; | |
12640 | bfd_byte *loc; | |
12641 | bfd_vma val; | |
49c09209 AM |
12642 | |
12643 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
12644 | lplt - local_plt, ibfd)) | |
12645 | { | |
12646 | if (local_syms != NULL | |
12647 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12648 | free (local_syms); | |
12649 | return FALSE; | |
12650 | } | |
12651 | ||
12652 | val = sym->st_value + ent->addend; | |
12653 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
12654 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
12655 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
12656 | ||
2d7ad24e AM |
12657 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
12658 | { | |
12659 | htab->local_ifunc_resolver = 1; | |
12660 | plt = htab->elf.iplt; | |
12661 | relplt = htab->elf.irelplt; | |
12662 | } | |
12663 | else | |
12664 | { | |
12665 | plt = htab->pltlocal; | |
12666 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
12667 | } | |
49c09209 | 12668 | |
2d7ad24e AM |
12669 | if (relplt == NULL) |
12670 | { | |
12671 | loc = plt->contents + ent->plt.offset; | |
12672 | bfd_put_64 (info->output_bfd, val, loc); | |
12673 | if (htab->opd_abi) | |
12674 | { | |
12675 | bfd_vma toc = elf_gp (ibfd); | |
12676 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
12677 | } | |
12678 | } | |
49c09209 | 12679 | else |
2d7ad24e AM |
12680 | { |
12681 | Elf_Internal_Rela rela; | |
12682 | rela.r_offset = (ent->plt.offset | |
12683 | + plt->output_offset | |
12684 | + plt->output_section->vma); | |
12685 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
12686 | { | |
12687 | if (htab->opd_abi) | |
12688 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
12689 | else | |
12690 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12691 | } | |
12692 | else | |
12693 | { | |
12694 | if (htab->opd_abi) | |
12695 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
12696 | else | |
12697 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
12698 | } | |
12699 | rela.r_addend = val; | |
12700 | loc = relplt->contents + (relplt->reloc_count++ | |
12701 | * sizeof (Elf64_External_Rela)); | |
12702 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
12703 | } | |
49c09209 AM |
12704 | } |
12705 | ||
12706 | if (local_syms != NULL | |
12707 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12708 | { | |
12709 | if (!info->keep_memory) | |
12710 | free (local_syms); | |
12711 | else | |
12712 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12713 | } | |
12714 | } | |
12715 | return TRUE; | |
12716 | } | |
12717 | ||
721956f4 AM |
12718 | /* Build all the stubs associated with the current output file. |
12719 | The stubs are kept in a hash table attached to the main linker | |
12720 | hash table. This function is called via gldelf64ppc_finish. */ | |
12721 | ||
b34976b6 | 12722 | bfd_boolean |
e7d1c40c | 12723 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12724 | char **stats) |
5d1634d7 AM |
12725 | { |
12726 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 12727 | struct map_stub *group; |
721956f4 | 12728 | asection *stub_sec; |
5d1634d7 | 12729 | bfd_byte *p; |
e717da7e | 12730 | int stub_sec_count = 0; |
5d1634d7 | 12731 | |
4dfe6ac6 NC |
12732 | if (htab == NULL) |
12733 | return FALSE; | |
12734 | ||
eea6121a | 12735 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 12736 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
12737 | { |
12738 | group->eh_size = 0; | |
12739 | group->lr_restore = 0; | |
12740 | if ((stub_sec = group->stub_sec) != NULL | |
12741 | && stub_sec->size != 0) | |
12742 | { | |
12743 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
12744 | stub_sec->size); | |
12745 | if (stub_sec->contents == NULL) | |
12746 | return FALSE; | |
12747 | stub_sec->size = 0; | |
12748 | } | |
12749 | } | |
5d1634d7 | 12750 | |
23eb7e01 | 12751 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12752 | { |
9f951329 | 12753 | unsigned int indx; |
ad8e1ba5 | 12754 | bfd_vma plt0; |
9f951329 | 12755 | |
721956f4 | 12756 | /* Build the .glink plt call stub. */ |
e7d1c40c | 12757 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12758 | { |
12759 | struct elf_link_hash_entry *h; | |
468392fb AM |
12760 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12761 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12762 | if (h == NULL) |
12763 | return FALSE; | |
12764 | if (h->root.type == bfd_link_hash_new) | |
12765 | { | |
12766 | h->root.type = bfd_link_hash_defined; | |
12767 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 12768 | h->root.u.def.value = 8; |
f5385ebf AM |
12769 | h->ref_regular = 1; |
12770 | h->def_regular = 1; | |
12771 | h->ref_regular_nonweak = 1; | |
12772 | h->forced_local = 1; | |
12773 | h->non_elf = 0; | |
2ec55de3 | 12774 | h->root.linker_def = 1; |
97b639ba AM |
12775 | } |
12776 | } | |
33e44f2e AM |
12777 | plt0 = (htab->elf.splt->output_section->vma |
12778 | + htab->elf.splt->output_offset | |
12779 | - 16); | |
176a0d42 AM |
12780 | if (info->emitrelocations) |
12781 | { | |
12782 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12783 | if (r == NULL) | |
12784 | return FALSE; | |
12785 | r->r_offset = (htab->glink->output_offset | |
12786 | + htab->glink->output_section->vma); | |
12787 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12788 | r->r_addend = plt0; | |
12789 | } | |
4ce794b7 | 12790 | p = htab->glink->contents; |
176a0d42 | 12791 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12792 | bfd_put_64 (htab->glink->owner, plt0, p); |
12793 | p += 8; | |
b9e5796b AM |
12794 | if (htab->opd_abi) |
12795 | { | |
12796 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
12797 | p += 4; | |
12798 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12799 | p += 4; | |
12800 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12801 | p += 4; | |
12802 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12803 | p += 4; | |
12804 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
12805 | p += 4; | |
12806 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12807 | p += 4; | |
12808 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12809 | p += 4; | |
12810 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
12811 | p += 4; | |
12812 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12813 | p += 4; | |
12814 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
12815 | p += 4; | |
12816 | } | |
12817 | else | |
12818 | { | |
12819 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
12820 | p += 4; | |
12821 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12822 | p += 4; | |
12823 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12824 | p += 4; | |
f378ab09 AM |
12825 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
12826 | p += 4; | |
b9e5796b AM |
12827 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
12828 | p += 4; | |
12829 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
12830 | p += 4; | |
12831 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
12832 | p += 4; | |
12833 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12834 | p += 4; | |
12835 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
12836 | p += 4; | |
12837 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12838 | p += 4; | |
12839 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
12840 | p += 4; | |
12841 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12842 | p += 4; | |
12843 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
12844 | p += 4; | |
12845 | } | |
407aa07c AM |
12846 | bfd_put_32 (htab->glink->owner, BCTR, p); |
12847 | p += 4; | |
c75bc4f7 | 12848 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 12849 | |
9f951329 AM |
12850 | /* Build the .glink lazy link call stubs. */ |
12851 | indx = 0; | |
9e390558 | 12852 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 12853 | { |
b9e5796b | 12854 | if (htab->opd_abi) |
9f951329 | 12855 | { |
b9e5796b AM |
12856 | if (indx < 0x8000) |
12857 | { | |
12858 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
12859 | p += 4; | |
12860 | } | |
12861 | else | |
12862 | { | |
12863 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
12864 | p += 4; | |
12865 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
12866 | p); | |
12867 | p += 4; | |
12868 | } | |
9f951329 | 12869 | } |
4ce794b7 | 12870 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12871 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12872 | indx++; |
9f951329 AM |
12873 | p += 4; |
12874 | } | |
5d1634d7 | 12875 | } |
5d1634d7 | 12876 | |
49c09209 AM |
12877 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
12878 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
12879 | ||
12880 | if (!write_plt_relocs_for_local_syms (info)) | |
12881 | return FALSE; | |
9e390558 | 12882 | |
7341d5e2 | 12883 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 12884 | { |
4ce794b7 | 12885 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12886 | htab->brlt->size); |
4ce794b7 | 12887 | if (htab->brlt->contents == NULL) |
b34976b6 | 12888 | return FALSE; |
721956f4 | 12889 | } |
ee75fd95 | 12890 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12891 | { |
12892 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12893 | htab->relbrlt->size); |
63bc6f6c AM |
12894 | if (htab->relbrlt->contents == NULL) |
12895 | return FALSE; | |
12896 | } | |
5d1634d7 | 12897 | |
721956f4 AM |
12898 | /* Build the stubs as directed by the stub hash table. */ |
12899 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12900 | |
a4b6fadd AM |
12901 | for (group = htab->group; group != NULL; group = group->next) |
12902 | if (group->needs_save_res) | |
7dda8d3c | 12903 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 12904 | |
aa8a7074 AM |
12905 | if (htab->relbrlt != NULL) |
12906 | htab->relbrlt->reloc_count = 0; | |
12907 | ||
e7d1c40c | 12908 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
12909 | for (group = htab->group; group != NULL; group = group->next) |
12910 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
12911 | { |
12912 | int align = abs (htab->params->plt_stub_align); | |
12913 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
12914 | } | |
794e51c0 | 12915 | |
7dda8d3c AM |
12916 | for (group = htab->group; group != NULL; group = group->next) |
12917 | if (group->needs_save_res) | |
12918 | { | |
12919 | stub_sec = group->stub_sec; | |
12920 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
12921 | htab->sfpr->contents, htab->sfpr->size); | |
12922 | if (htab->params->emit_stub_syms) | |
12923 | { | |
12924 | unsigned int i; | |
12925 | ||
12926 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
12927 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
12928 | return FALSE; | |
12929 | } | |
12930 | } | |
12931 | ||
df136d64 AM |
12932 | if (htab->glink_eh_frame != NULL |
12933 | && htab->glink_eh_frame->size != 0) | |
12934 | { | |
12935 | bfd_vma val; | |
12936 | size_t align = 4; | |
12937 | ||
12938 | p = htab->glink_eh_frame->contents; | |
12939 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
12940 | ||
12941 | for (group = htab->group; group != NULL; group = group->next) | |
12942 | if (group->eh_size != 0) | |
12943 | { | |
12944 | /* Offset to stub section. */ | |
12945 | val = (group->stub_sec->output_section->vma | |
12946 | + group->stub_sec->output_offset); | |
12947 | val -= (htab->glink_eh_frame->output_section->vma | |
12948 | + htab->glink_eh_frame->output_offset | |
12949 | + (p + 8 - htab->glink_eh_frame->contents)); | |
12950 | if (val + 0x80000000 > 0xffffffff) | |
12951 | { | |
12952 | _bfd_error_handler | |
12953 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
12954 | group->stub_sec->name); | |
12955 | return FALSE; | |
12956 | } | |
12957 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
12958 | p += (group->eh_size + 17 + 3) & -4; | |
12959 | } | |
12960 | if (htab->glink != NULL && htab->glink->size != 0) | |
12961 | { | |
12962 | /* Offset to .glink. */ | |
12963 | val = (htab->glink->output_section->vma | |
12964 | + htab->glink->output_offset | |
12965 | + 8); | |
12966 | val -= (htab->glink_eh_frame->output_section->vma | |
12967 | + htab->glink_eh_frame->output_offset | |
12968 | + (p + 8 - htab->glink_eh_frame->contents)); | |
12969 | if (val + 0x80000000 > 0xffffffff) | |
12970 | { | |
12971 | _bfd_error_handler | |
12972 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
12973 | htab->glink->name); | |
12974 | return FALSE; | |
12975 | } | |
12976 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
12977 | p += (24 + align - 1) & -align; | |
12978 | } | |
12979 | } | |
12980 | ||
d4aaa2a0 AM |
12981 | for (group = htab->group; group != NULL; group = group->next) |
12982 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
12983 | { |
12984 | stub_sec_count += 1; | |
c9301e31 AM |
12985 | if (stub_sec->rawsize != stub_sec->size |
12986 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
12987 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
12988 | break; |
12989 | } | |
5d1634d7 | 12990 | |
25516cc5 | 12991 | if (group != NULL) |
5d1634d7 | 12992 | { |
b34976b6 | 12993 | htab->stub_error = TRUE; |
cf97bcb0 | 12994 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 12995 | } |
721956f4 | 12996 | |
d2a300cf AM |
12997 | if (htab->stub_error) |
12998 | return FALSE; | |
12999 | ||
13000 | if (stats != NULL) | |
13001 | { | |
db84fff3 | 13002 | size_t len; |
d2a300cf AM |
13003 | *stats = bfd_malloc (500); |
13004 | if (*stats == NULL) | |
13005 | return FALSE; | |
13006 | ||
db84fff3 AM |
13007 | len = sprintf (*stats, |
13008 | ngettext ("linker stubs in %u group\n", | |
13009 | "linker stubs in %u groups\n", | |
13010 | stub_sec_count), | |
13011 | stub_sec_count); | |
05d0e962 AM |
13012 | sprintf (*stats + len, _(" branch %lu\n" |
13013 | " branch toc adj %lu\n" | |
13014 | " branch notoc %lu\n" | |
13015 | " branch both %lu\n" | |
13016 | " long branch %lu\n" | |
13017 | " long toc adj %lu\n" | |
13018 | " long notoc %lu\n" | |
13019 | " long both %lu\n" | |
13020 | " plt call %lu\n" | |
13021 | " plt call save %lu\n" | |
13022 | " plt call notoc %lu\n" | |
13023 | " plt call both %lu\n" | |
13024 | " global entry %lu"), | |
4ce794b7 AM |
13025 | htab->stub_count[ppc_stub_long_branch - 1], |
13026 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
05d0e962 AM |
13027 | htab->stub_count[ppc_stub_long_branch_notoc - 1], |
13028 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
4ce794b7 AM |
13029 | htab->stub_count[ppc_stub_plt_branch - 1], |
13030 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
05d0e962 AM |
13031 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], |
13032 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
794e51c0 | 13033 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 | 13034 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
05d0e962 AM |
13035 | htab->stub_count[ppc_stub_plt_call_notoc - 1], |
13036 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
7341d5e2 | 13037 | htab->stub_count[ppc_stub_global_entry - 1]); |
d2a300cf AM |
13038 | } |
13039 | return TRUE; | |
5bd4f169 AM |
13040 | } |
13041 | ||
60124e18 AM |
13042 | /* What to do when ld finds relocations against symbols defined in |
13043 | discarded sections. */ | |
13044 | ||
13045 | static unsigned int | |
13046 | ppc64_elf_action_discarded (asection *sec) | |
13047 | { | |
13048 | if (strcmp (".opd", sec->name) == 0) | |
13049 | return 0; | |
13050 | ||
13051 | if (strcmp (".toc", sec->name) == 0) | |
13052 | return 0; | |
13053 | ||
bce50a28 JJ |
13054 | if (strcmp (".toc1", sec->name) == 0) |
13055 | return 0; | |
13056 | ||
60124e18 AM |
13057 | return _bfd_elf_default_action_discarded (sec); |
13058 | } | |
13059 | ||
5bd4f169 AM |
13060 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13061 | to handle the relocations for a section. | |
13062 | ||
13063 | The relocs are always passed as Rela structures; if the section | |
13064 | actually uses Rel structures, the r_addend field will always be | |
13065 | zero. | |
13066 | ||
13067 | This function is responsible for adjust the section contents as | |
13068 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13069 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13070 | necessary. |
13071 | ||
13072 | This function does not have to worry about setting the reloc | |
13073 | address or the reloc symbol index. | |
13074 | ||
13075 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13076 | ||
13077 | LOCAL_SECTIONS is an array giving the section in the input file | |
13078 | corresponding to the st_shndx field of each local symbol. | |
13079 | ||
13080 | The global hash table entry for the global symbols can be found | |
13081 | via elf_sym_hashes (input_bfd). | |
13082 | ||
1049f94e | 13083 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13084 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13085 | going to be the section symbol corresponding to the output | |
13086 | section, which means that the addend must be adjusted | |
13087 | accordingly. */ | |
13088 | ||
b34976b6 | 13089 | static bfd_boolean |
4ce794b7 AM |
13090 | ppc64_elf_relocate_section (bfd *output_bfd, |
13091 | struct bfd_link_info *info, | |
13092 | bfd *input_bfd, | |
13093 | asection *input_section, | |
13094 | bfd_byte *contents, | |
13095 | Elf_Internal_Rela *relocs, | |
13096 | Elf_Internal_Sym *local_syms, | |
13097 | asection **local_sections) | |
5bd4f169 | 13098 | { |
65f38f15 | 13099 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13100 | Elf_Internal_Shdr *symtab_hdr; |
13101 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13102 | Elf_Internal_Rela *rel; |
c316a17c | 13103 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13104 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13105 | Elf_Internal_Rela outrel; |
13106 | bfd_byte *loc; | |
411e1bfb | 13107 | struct got_entry **local_got_ents; |
5bd4f169 | 13108 | bfd_vma TOCstart; |
b34976b6 AM |
13109 | bfd_boolean ret = TRUE; |
13110 | bfd_boolean is_opd; | |
794e51c0 AM |
13111 | /* Assume 'at' branch hints. */ |
13112 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13113 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13114 | |
65f38f15 | 13115 | /* Initialize howto table if needed. */ |
5bd4f169 | 13116 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13117 | ppc_howto_init (); |
13118 | ||
65f38f15 | 13119 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13120 | if (htab == NULL) |
13121 | return FALSE; | |
ee75fd95 AM |
13122 | |
13123 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13124 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13125 | return TRUE; |
13126 | ||
0c8d6e5c | 13127 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13128 | |
411e1bfb | 13129 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13130 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13131 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13132 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13133 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13134 | |
c316a17c | 13135 | rel = wrel = relocs; |
5bd4f169 | 13136 | relend = relocs + input_section->reloc_count; |
c316a17c | 13137 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13138 | { |
04c9666a | 13139 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13140 | bfd_vma addend; |
5bd4f169 AM |
13141 | bfd_reloc_status_type r; |
13142 | Elf_Internal_Sym *sym; | |
13143 | asection *sec; | |
039b3fef AM |
13144 | struct elf_link_hash_entry *h_elf; |
13145 | struct ppc_link_hash_entry *h; | |
13146 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13147 | const char *sym_name; |
0d4792f7 | 13148 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13149 | bfd_vma toc_addend; |
f961d9dd AM |
13150 | unsigned char tls_mask, tls_gd, tls_type; |
13151 | unsigned char sym_type; | |
5bd4f169 | 13152 | bfd_vma relocation; |
23cedd1d | 13153 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 13154 | bfd_boolean warned; |
bc30df16 | 13155 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13156 | unsigned int insn; |
e11840f9 | 13157 | unsigned int mask; |
721956f4 AM |
13158 | struct ppc_stub_hash_entry *stub_entry; |
13159 | bfd_vma max_br_offset; | |
13160 | bfd_vma from; | |
c316a17c | 13161 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13162 | reloc_howto_type *howto; |
13163 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13164 | |
c316a17c AM |
13165 | again: |
13166 | orig_rel = *rel; | |
13167 | ||
4ce794b7 | 13168 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13169 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13170 | |
13171 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13172 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13173 | proper TOC base to use. */ | |
13174 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13175 | && wrel != relocs |
13176 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13177 | && is_opd) |
c316a17c | 13178 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13179 | |
4ce794b7 AM |
13180 | sym = NULL; |
13181 | sec = NULL; | |
039b3fef | 13182 | h_elf = NULL; |
4ce794b7 | 13183 | sym_name = NULL; |
b34976b6 AM |
13184 | unresolved_reloc = FALSE; |
13185 | warned = FALSE; | |
65f38f15 | 13186 | |
0b13192e | 13187 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13188 | { |
13189 | /* It's a local symbol. */ | |
74f0fb50 | 13190 | struct _opd_sec_data *opd; |
4025353c | 13191 | |
5bd4f169 AM |
13192 | sym = local_syms + r_symndx; |
13193 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13194 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13195 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13196 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13197 | opd = get_opd_info (sec); |
13198 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13199 | { |
51aecdc5 AM |
13200 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
13201 | + rel->r_addend)]; | |
4025353c AM |
13202 | if (adjust == -1) |
13203 | relocation = 0; | |
13204 | else | |
4cc603a5 AM |
13205 | { |
13206 | /* If this is a relocation against the opd section sym | |
13207 | and we have edited .opd, adjust the reloc addend so | |
13208 | that ld -r and ld --emit-relocs output is correct. | |
13209 | If it is a reloc against some other .opd symbol, | |
13210 | then the symbol value will be adjusted later. */ | |
13211 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13212 | rel->r_addend += adjust; | |
13213 | else | |
13214 | relocation += adjust; | |
13215 | } | |
1e2f5b6e | 13216 | } |
5bd4f169 AM |
13217 | } |
13218 | else | |
13219 | { | |
62d887d4 L |
13220 | bfd_boolean ignored; |
13221 | ||
b2a8e766 AM |
13222 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13223 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13224 | h_elf, sec, relocation, |
62d887d4 | 13225 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13226 | sym_name = h_elf->root.root.string; |
13227 | sym_type = h_elf->type; | |
b69fdb4e AM |
13228 | if (sec != NULL |
13229 | && sec->owner == output_bfd | |
13230 | && strcmp (sec->name, ".opd") == 0) | |
13231 | { | |
13232 | /* This is a symbol defined in a linker script. All | |
13233 | such are defined in output sections, even those | |
13234 | defined by simple assignment from a symbol defined in | |
13235 | an input section. Transfer the symbol to an | |
13236 | appropriate input .opd section, so that a branch to | |
13237 | this symbol will be mapped to the location specified | |
13238 | by the opd entry. */ | |
13239 | struct bfd_link_order *lo; | |
13240 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13241 | if (lo->type == bfd_indirect_link_order) | |
13242 | { | |
13243 | asection *isec = lo->u.indirect.section; | |
13244 | if (h_elf->root.u.def.value >= isec->output_offset | |
13245 | && h_elf->root.u.def.value < (isec->output_offset | |
13246 | + isec->size)) | |
13247 | { | |
13248 | h_elf->root.u.def.value -= isec->output_offset; | |
13249 | h_elf->root.u.def.section = isec; | |
13250 | sec = isec; | |
13251 | break; | |
13252 | } | |
13253 | } | |
13254 | } | |
5bd4f169 | 13255 | } |
039b3fef | 13256 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13257 | |
dbaa2011 | 13258 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
13259 | { |
13260 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
13261 | input_bfd, input_section, | |
13262 | contents + rel->r_offset); | |
13263 | wrel->r_offset = rel->r_offset; | |
13264 | wrel->r_info = 0; | |
13265 | wrel->r_addend = 0; | |
13266 | ||
13267 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 13268 | symbols defined in discarded sections. Not done for |
c316a17c AM |
13269 | non-debug to preserve relocs in .eh_frame which the |
13270 | eh_frame editing code expects to be present. */ | |
13271 | if (bfd_link_relocatable (info) | |
13272 | && (input_section->flags & SEC_DEBUGGING)) | |
13273 | wrel--; | |
13274 | ||
13275 | continue; | |
13276 | } | |
ab96bf03 | 13277 | |
0e1862bb | 13278 | if (bfd_link_relocatable (info)) |
c316a17c | 13279 | goto copy_reloc; |
ab96bf03 | 13280 | |
f40da81b AM |
13281 | if (h != NULL && &h->elf == htab->elf.hgot) |
13282 | { | |
6f20ed8a | 13283 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
13284 | sec = bfd_abs_section_ptr; |
13285 | unresolved_reloc = FALSE; | |
13286 | } | |
13287 | ||
951fd09b AM |
13288 | /* TLS optimizations. Replace instruction sequences and relocs |
13289 | based on information we collected in tls_optimize. We edit | |
13290 | RELOCS so that --emit-relocs will output something sensible | |
13291 | for the final instruction stream. */ | |
13292 | tls_mask = 0; | |
13293 | tls_gd = 0; | |
0d4792f7 | 13294 | toc_symndx = 0; |
727fc41e AM |
13295 | if (h != NULL) |
13296 | tls_mask = h->tls_mask; | |
13297 | else if (local_got_ents != NULL) | |
411e1bfb | 13298 | { |
e054468f AM |
13299 | struct plt_entry **local_plt = (struct plt_entry **) |
13300 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13301 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13302 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13303 | tls_mask = lgot_masks[r_symndx]; |
13304 | } | |
37da22e5 | 13305 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
13306 | && (r_type == R_PPC64_TLS |
13307 | || r_type == R_PPC64_TLSGD | |
13308 | || r_type == R_PPC64_TLSLD)) | |
13309 | { | |
13310 | /* Check for toc tls entries. */ | |
f961d9dd | 13311 | unsigned char *toc_tls; |
0d4792f7 | 13312 | |
727fc41e AM |
13313 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13314 | &local_syms, rel, input_bfd)) | |
13315 | return FALSE; | |
0d4792f7 | 13316 | |
727fc41e AM |
13317 | if (toc_tls) |
13318 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13319 | } |
13320 | ||
13321 | /* Check that tls relocs are used with tls syms, and non-tls | |
13322 | relocs are used with non-tls syms. */ | |
cf35638d | 13323 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13324 | && r_type != R_PPC64_NONE |
13325 | && (h == NULL | |
039b3fef AM |
13326 | || h->elf.root.type == bfd_link_hash_defined |
13327 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13328 | && (IS_PPC64_TLS_RELOC (r_type) |
13329 | != (sym_type == STT_TLS | |
13330 | || (sym_type == STT_SECTION | |
13331 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13332 | { |
37da22e5 | 13333 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
13334 | && (r_type == R_PPC64_TLS |
13335 | || r_type == R_PPC64_TLSGD | |
13336 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13337 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13338 | ; | |
13339 | else | |
25f53a85 | 13340 | info->callbacks->einfo |
1d483afe | 13341 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 13342 | /* xgettext:c-format */ |
c1c8c1ef | 13343 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 13344 | /* xgettext:c-format */ |
c1c8c1ef | 13345 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 13346 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13347 | ppc64_elf_howto_table[r_type]->name, |
13348 | sym_name); | |
411e1bfb AM |
13349 | } |
13350 | ||
13351 | /* Ensure reloc mapping code below stays sane. */ | |
13352 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13353 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13354 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13355 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13356 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13357 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13358 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13359 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13360 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13361 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13362 | abort (); | |
0d4792f7 | 13363 | |
411e1bfb AM |
13364 | switch (r_type) |
13365 | { | |
13366 | default: | |
411e1bfb AM |
13367 | break; |
13368 | ||
ba761f19 | 13369 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 13370 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
13371 | if ((insn & (0x3f << 26)) != 58u << 26) |
13372 | abort (); | |
13373 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 13374 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
13375 | r_type = R_PPC64_TOC16_LO; |
13376 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13377 | break; | |
13378 | ||
411e1bfb AM |
13379 | case R_PPC64_TOC16: |
13380 | case R_PPC64_TOC16_LO: | |
13381 | case R_PPC64_TOC16_DS: | |
13382 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13383 | { |
13384 | /* Check for toc tls entries. */ | |
f961d9dd | 13385 | unsigned char *toc_tls; |
951fd09b | 13386 | int retval; |
411e1bfb | 13387 | |
3a71aa26 AM |
13388 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13389 | &local_syms, rel, input_bfd); | |
951fd09b | 13390 | if (retval == 0) |
411e1bfb AM |
13391 | return FALSE; |
13392 | ||
13393 | if (toc_tls) | |
13394 | { | |
951fd09b | 13395 | tls_mask = *toc_tls; |
411e1bfb AM |
13396 | if (r_type == R_PPC64_TOC16_DS |
13397 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 13398 | { |
37da22e5 | 13399 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
13400 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
13401 | goto toctprel; | |
13402 | } | |
411e1bfb | 13403 | else |
951fd09b AM |
13404 | { |
13405 | /* If we found a GD reloc pair, then we might be | |
13406 | doing a GD->IE transition. */ | |
13407 | if (retval == 2) | |
13408 | { | |
13409 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
13410 | if ((tls_mask & TLS_TLS) != 0 |
13411 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13412 | goto tls_ldgd_opt; |
951fd09b AM |
13413 | } |
13414 | else if (retval == 3) | |
13415 | { | |
37da22e5 AM |
13416 | if ((tls_mask & TLS_TLS) != 0 |
13417 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13418 | goto tls_ldgd_opt; |
951fd09b AM |
13419 | } |
13420 | } | |
411e1bfb AM |
13421 | } |
13422 | } | |
13423 | break; | |
13424 | ||
9d6ded02 AM |
13425 | case R_PPC64_GOT_TPREL16_HI: |
13426 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 13427 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
13428 | && (tls_mask & TLS_TPREL) == 0) |
13429 | { | |
13430 | rel->r_offset -= d_offset; | |
95f0d0d2 | 13431 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
13432 | r_type = R_PPC64_NONE; |
13433 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13434 | } | |
13435 | break; | |
13436 | ||
411e1bfb AM |
13437 | case R_PPC64_GOT_TPREL16_DS: |
13438 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 13439 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 13440 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 13441 | { |
81407a69 | 13442 | toctprel: |
95f0d0d2 | 13443 | insn = bfd_get_32 (input_bfd, |
c316a17c | 13444 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
13445 | insn &= 31 << 21; |
13446 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 13447 | bfd_put_32 (input_bfd, insn, |
c316a17c | 13448 | contents + rel->r_offset - d_offset); |
411e1bfb | 13449 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13450 | if (toc_symndx != 0) |
13451 | { | |
13452 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13453 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13454 | /* We changed the symbol. Start over in order to |
13455 | get h, sym, sec etc. right. */ | |
c316a17c | 13456 | goto again; |
0d4792f7 AM |
13457 | } |
13458 | else | |
13459 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13460 | } |
13461 | break; | |
13462 | ||
13463 | case R_PPC64_TLS: | |
37da22e5 | 13464 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 13465 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 13466 | { |
95f0d0d2 | 13467 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13468 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13469 | if (insn == 0) | |
411e1bfb | 13470 | abort (); |
95f0d0d2 | 13471 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13472 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13473 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13474 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13475 | r_type = R_PPC64_TPREL16_LO; |
13476 | if (toc_symndx != 0) | |
13477 | { | |
13478 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13479 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13480 | /* We changed the symbol. Start over in order to |
13481 | get h, sym, sec etc. right. */ | |
c316a17c | 13482 | goto again; |
0d4792f7 AM |
13483 | } |
13484 | else | |
13485 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13486 | } |
13487 | break; | |
13488 | ||
411e1bfb AM |
13489 | case R_PPC64_GOT_TLSGD16_HI: |
13490 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13491 | tls_gd = TLS_TPRELGD; |
37da22e5 | 13492 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
13493 | goto tls_gdld_hi; |
13494 | break; | |
13495 | ||
411e1bfb AM |
13496 | case R_PPC64_GOT_TLSLD16_HI: |
13497 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 13498 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13499 | { |
951fd09b AM |
13500 | tls_gdld_hi: |
13501 | if ((tls_mask & tls_gd) != 0) | |
13502 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13503 | + R_PPC64_GOT_TPREL16_DS); | |
13504 | else | |
411e1bfb | 13505 | { |
4fe5ca5b | 13506 | rel->r_offset -= d_offset; |
95f0d0d2 | 13507 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13508 | r_type = R_PPC64_NONE; |
411e1bfb | 13509 | } |
951fd09b | 13510 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13511 | } |
13512 | break; | |
13513 | ||
951fd09b AM |
13514 | case R_PPC64_GOT_TLSGD16: |
13515 | case R_PPC64_GOT_TLSGD16_LO: | |
13516 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 13517 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 13518 | goto tls_ldgd_opt; |
951fd09b | 13519 | break; |
411e1bfb | 13520 | |
951fd09b AM |
13521 | case R_PPC64_GOT_TLSLD16: |
13522 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 13523 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 13524 | { |
b9f04fe0 | 13525 | unsigned int insn1, insn2; |
102890f0 AM |
13526 | bfd_vma offset; |
13527 | ||
13528 | tls_ldgd_opt: | |
727fc41e AM |
13529 | offset = (bfd_vma) -1; |
13530 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13531 | __tls_get_addr calls, we must trust that the call | |
13532 | stays with its arg setup insns, ie. that the next | |
13533 | reloc is the __tls_get_addr call associated with | |
13534 | the current reloc. Edit both insns. */ | |
13535 | if (input_section->has_tls_get_addr_call | |
13536 | && rel + 1 < relend | |
13537 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13538 | htab->tls_get_addr, | |
13539 | htab->tls_get_addr_fd)) | |
13540 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
13541 | /* We read the low GOT_TLS (or TOC16) insn because we |
13542 | need to keep the destination reg. It may be | |
13543 | something other than the usual r3, and moved to r3 | |
13544 | before the call by intervening code. */ | |
95f0d0d2 | 13545 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 13546 | contents + rel->r_offset - d_offset); |
102890f0 | 13547 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13548 | { |
102890f0 | 13549 | /* IE */ |
b86ac8e3 | 13550 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
13551 | insn1 |= 58 << 26; /* ld */ |
13552 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13553 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13554 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13555 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13556 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13557 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13558 | else |
102890f0 AM |
13559 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13560 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13561 | } | |
13562 | else | |
13563 | { | |
13564 | /* LE */ | |
b86ac8e3 AM |
13565 | insn1 &= 0x1f << 21; |
13566 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
13567 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13568 | if (tls_gd == 0) | |
951fd09b | 13569 | { |
102890f0 | 13570 | /* Was an LD reloc. */ |
1d483afe AM |
13571 | if (toc_symndx) |
13572 | sec = local_sections[toc_symndx]; | |
13573 | for (r_symndx = 0; | |
13574 | r_symndx < symtab_hdr->sh_info; | |
13575 | r_symndx++) | |
13576 | if (local_sections[r_symndx] == sec) | |
13577 | break; | |
13578 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13579 | r_symndx = STN_UNDEF; |
102890f0 | 13580 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13581 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13582 | rel->r_addend -= (local_syms[r_symndx].st_value |
13583 | + sec->output_offset | |
13584 | + sec->output_section->vma); | |
951fd09b | 13585 | } |
102890f0 | 13586 | else if (toc_symndx != 0) |
3a71aa26 AM |
13587 | { |
13588 | r_symndx = toc_symndx; | |
13589 | rel->r_addend = toc_addend; | |
13590 | } | |
102890f0 AM |
13591 | r_type = R_PPC64_TPREL16_HA; |
13592 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13593 | if (offset != (bfd_vma) -1) |
13594 | { | |
13595 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13596 | R_PPC64_TPREL16_LO); | |
13597 | rel[1].r_offset = offset + d_offset; | |
13598 | rel[1].r_addend = rel->r_addend; | |
13599 | } | |
102890f0 | 13600 | } |
95f0d0d2 | 13601 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 13602 | contents + rel->r_offset - d_offset); |
727fc41e | 13603 | if (offset != (bfd_vma) -1) |
b9f04fe0 | 13604 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
13605 | if ((tls_mask & tls_gd) == 0 |
13606 | && (tls_gd == 0 || toc_symndx != 0)) | |
13607 | { | |
13608 | /* We changed the symbol. Start over in order | |
13609 | to get h, sym, sec etc. right. */ | |
c316a17c | 13610 | goto again; |
727fc41e AM |
13611 | } |
13612 | } | |
13613 | break; | |
13614 | ||
13615 | case R_PPC64_TLSGD: | |
37da22e5 | 13616 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 13617 | && rel + 1 < relend) |
727fc41e | 13618 | { |
b9f04fe0 | 13619 | unsigned int insn2; |
727fc41e AM |
13620 | bfd_vma offset = rel->r_offset; |
13621 | ||
23cedd1d AM |
13622 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
13623 | { | |
13624 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
13625 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
13626 | break; | |
13627 | } | |
13628 | ||
13629 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
13630 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
13631 | ||
727fc41e AM |
13632 | if ((tls_mask & TLS_TPRELGD) != 0) |
13633 | { | |
13634 | /* IE */ | |
13635 | r_type = R_PPC64_NONE; | |
13636 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13637 | } | |
13638 | else | |
13639 | { | |
13640 | /* LE */ | |
13641 | if (toc_symndx != 0) | |
13642 | { | |
13643 | r_symndx = toc_symndx; | |
13644 | rel->r_addend = toc_addend; | |
13645 | } | |
13646 | r_type = R_PPC64_TPREL16_LO; | |
13647 | rel->r_offset = offset + d_offset; | |
13648 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13649 | } | |
13650 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13651 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13652 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13653 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 13654 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 13655 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 13656 | goto again; |
411e1bfb | 13657 | } |
411e1bfb AM |
13658 | break; |
13659 | ||
727fc41e | 13660 | case R_PPC64_TLSLD: |
37da22e5 | 13661 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 13662 | && rel + 1 < relend) |
727fc41e | 13663 | { |
b9f04fe0 | 13664 | unsigned int insn2; |
727fc41e AM |
13665 | bfd_vma offset = rel->r_offset; |
13666 | ||
23cedd1d AM |
13667 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
13668 | { | |
13669 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
13670 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
13671 | break; | |
13672 | } | |
13673 | ||
13674 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
13675 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
13676 | ||
727fc41e AM |
13677 | if (toc_symndx) |
13678 | sec = local_sections[toc_symndx]; | |
13679 | for (r_symndx = 0; | |
13680 | r_symndx < symtab_hdr->sh_info; | |
13681 | r_symndx++) | |
13682 | if (local_sections[r_symndx] == sec) | |
13683 | break; | |
13684 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13685 | r_symndx = STN_UNDEF; |
727fc41e | 13686 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13687 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13688 | rel->r_addend -= (local_syms[r_symndx].st_value |
13689 | + sec->output_offset | |
13690 | + sec->output_section->vma); | |
13691 | ||
13692 | r_type = R_PPC64_TPREL16_LO; | |
13693 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13694 | rel->r_offset = offset + d_offset; | |
13695 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13696 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13697 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 13698 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 13699 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 13700 | goto again; |
727fc41e AM |
13701 | } |
13702 | break; | |
13703 | ||
411e1bfb | 13704 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13705 | if (rel + 1 < relend |
13706 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13707 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13708 | { |
951fd09b AM |
13709 | if ((tls_mask & TLS_GD) == 0) |
13710 | { | |
13711 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13712 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13713 | r_type = R_PPC64_TPREL64; | |
13714 | else | |
13715 | { | |
4ce794b7 | 13716 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13717 | r_type = R_PPC64_NONE; |
13718 | } | |
13719 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13720 | } | |
13721 | } | |
13722 | else | |
13723 | { | |
13724 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13725 | { |
4ce794b7 | 13726 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13727 | r_type = R_PPC64_NONE; |
951fd09b | 13728 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13729 | } |
411e1bfb AM |
13730 | } |
13731 | break; | |
13732 | ||
13733 | case R_PPC64_TPREL64: | |
951fd09b | 13734 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13735 | { |
13736 | r_type = R_PPC64_NONE; | |
13737 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13738 | } | |
13739 | break; | |
52a82034 | 13740 | |
006589cf AM |
13741 | case R_PPC64_ENTRY: |
13742 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
13743 | if (!bfd_link_pic (info) | |
13744 | && !info->traditional_format | |
13745 | && relocation + 0x80008000 <= 0xffffffff) | |
13746 | { | |
13747 | unsigned int insn1, insn2; | |
13748 | ||
13749 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13750 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
13751 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
13752 | && insn2 == ADD_R2_R2_R12) | |
13753 | { | |
95f0d0d2 | 13754 | bfd_put_32 (input_bfd, |
006589cf AM |
13755 | LIS_R2 + PPC_HA (relocation), |
13756 | contents + rel->r_offset); | |
95f0d0d2 | 13757 | bfd_put_32 (input_bfd, |
006589cf AM |
13758 | ADDI_R2_R2 + PPC_LO (relocation), |
13759 | contents + rel->r_offset + 4); | |
13760 | } | |
13761 | } | |
13762 | else | |
13763 | { | |
13764 | relocation -= (rel->r_offset | |
13765 | + input_section->output_offset | |
13766 | + input_section->output_section->vma); | |
13767 | if (relocation + 0x80008000 <= 0xffffffff) | |
13768 | { | |
13769 | unsigned int insn1, insn2; | |
13770 | ||
13771 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13772 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
13773 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
13774 | && insn2 == ADD_R2_R2_R12) | |
13775 | { | |
95f0d0d2 | 13776 | bfd_put_32 (input_bfd, |
006589cf AM |
13777 | ADDIS_R2_R12 + PPC_HA (relocation), |
13778 | contents + rel->r_offset); | |
95f0d0d2 | 13779 | bfd_put_32 (input_bfd, |
006589cf AM |
13780 | ADDI_R2_R2 + PPC_LO (relocation), |
13781 | contents + rel->r_offset + 4); | |
13782 | } | |
13783 | } | |
13784 | } | |
13785 | break; | |
13786 | ||
52a82034 AM |
13787 | case R_PPC64_REL16_HA: |
13788 | /* If we are generating a non-PIC executable, edit | |
13789 | . 0: addis 2,12,.TOC.-0b@ha | |
13790 | . addi 2,2,.TOC.-0b@l | |
13791 | used by ELFv2 global entry points to set up r2, to | |
13792 | . lis 2,.TOC.@ha | |
13793 | . addi 2,2,.TOC.@l | |
13794 | if .TOC. is in range. */ | |
0e1862bb | 13795 | if (!bfd_link_pic (info) |
810d4e75 | 13796 | && !info->traditional_format |
006589cf | 13797 | && !htab->opd_abi |
4f038ee5 | 13798 | && rel->r_addend == d_offset |
52a82034 AM |
13799 | && h != NULL && &h->elf == htab->elf.hgot |
13800 | && rel + 1 < relend | |
13801 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
13802 | && rel[1].r_offset == rel->r_offset + 4 | |
13803 | && rel[1].r_addend == rel->r_addend + 4 | |
13804 | && relocation + 0x80008000 <= 0xffffffff) | |
13805 | { | |
13806 | unsigned int insn1, insn2; | |
13807 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
13808 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
13809 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
13810 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
13811 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
13812 | { |
13813 | r_type = R_PPC64_ADDR16_HA; | |
13814 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13815 | rel->r_addend -= d_offset; | |
13816 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
13817 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 13818 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
13819 | } |
13820 | } | |
13821 | break; | |
411e1bfb AM |
13822 | } |
13823 | ||
13824 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 13825 | insn = 0; |
b25116a9 AM |
13826 | max_br_offset = 1 << 25; |
13827 | addend = rel->r_addend; | |
bc30df16 | 13828 | reloc_dest = DEST_NORMAL; |
65f38f15 | 13829 | switch (r_type) |
5bd4f169 AM |
13830 | { |
13831 | default: | |
65f38f15 | 13832 | break; |
5bd4f169 | 13833 | |
3b421ab3 AM |
13834 | case R_PPC64_TOCSAVE: |
13835 | if (relocation + addend == (rel->r_offset | |
13836 | + input_section->output_offset | |
13837 | + input_section->output_section->vma) | |
13838 | && tocsave_find (htab, NO_INSERT, | |
13839 | &local_syms, rel, input_bfd)) | |
13840 | { | |
13841 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13842 | if (insn == NOP | |
13843 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
13844 | bfd_put_32 (input_bfd, |
13845 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
13846 | contents + rel->r_offset); |
13847 | } | |
13848 | break; | |
13849 | ||
65f38f15 AM |
13850 | /* Branch taken prediction relocations. */ |
13851 | case R_PPC64_ADDR14_BRTAKEN: | |
13852 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 13853 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 13854 | /* Fall through. */ |
65f38f15 | 13855 | |
86c76c7b | 13856 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
13857 | case R_PPC64_ADDR14_BRNTAKEN: |
13858 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 13859 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 13860 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 13861 | /* Fall through. */ |
86c76c7b | 13862 | |
b25116a9 AM |
13863 | case R_PPC64_REL14: |
13864 | max_br_offset = 1 << 15; | |
1a0670f3 | 13865 | /* Fall through. */ |
5bd4f169 | 13866 | |
65f38f15 | 13867 | case R_PPC64_REL24: |
05d0e962 | 13868 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 13869 | case R_PPC64_PLTCALL: |
ad8e1ba5 AM |
13870 | /* Calls to functions with a different TOC, such as calls to |
13871 | shared objects, need to alter the TOC pointer. This is | |
13872 | done using a linkage stub. A REL24 branching to these | |
13873 | linkage stubs needs to be followed by a nop, as the nop | |
13874 | will be replaced with an instruction to restore the TOC | |
13875 | base pointer. */ | |
8387904d | 13876 | fdh = h; |
b31867b6 AM |
13877 | if (h != NULL |
13878 | && h->oh != NULL | |
13879 | && h->oh->is_func_descriptor) | |
13880 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13881 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13882 | htab); | |
23cedd1d AM |
13883 | if (r_type == R_PPC64_PLTCALL |
13884 | && stub_entry != NULL | |
05d0e962 AM |
13885 | && stub_entry->stub_type >= ppc_stub_plt_call |
13886 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
13887 | stub_entry = NULL; |
13888 | ||
6abec6bc | 13889 | if (stub_entry != NULL |
d0abeec8 AM |
13890 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
13891 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 13892 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
13893 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
13894 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
13895 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 13896 | { |
b25116a9 | 13897 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13898 | |
6e1816be AM |
13899 | if (stub_entry->stub_type == ppc_stub_plt_call |
13900 | && !htab->opd_abi | |
13901 | && htab->params->plt_localentry0 != 0 | |
13902 | && is_elfv2_localentry0 (&h->elf)) | |
13903 | { | |
13904 | /* The function doesn't use or change r2. */ | |
13905 | can_plt_call = TRUE; | |
13906 | } | |
05d0e962 AM |
13907 | else if (r_type == R_PPC64_REL24_NOTOC) |
13908 | { | |
13909 | /* NOTOC calls don't need to restore r2. */ | |
13910 | can_plt_call = TRUE; | |
13911 | } | |
6e1816be | 13912 | |
f378ab09 | 13913 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
13914 | branch and link followed by a nop. The nop is |
13915 | replaced by an insn to restore r2. */ | |
6e1816be | 13916 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13917 | { |
ba8ca3e7 AM |
13918 | unsigned long br; |
13919 | ||
13920 | br = bfd_get_32 (input_bfd, | |
13921 | contents + rel->r_offset); | |
13922 | if ((br & 1) != 0) | |
41bd81ab | 13923 | { |
ba8ca3e7 AM |
13924 | unsigned long nop; |
13925 | ||
13926 | nop = bfd_get_32 (input_bfd, | |
13927 | contents + rel->r_offset + 4); | |
23cedd1d AM |
13928 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
13929 | can_plt_call = TRUE; | |
13930 | else if (nop == NOP | |
13931 | || nop == CROR_151515 | |
13932 | || nop == CROR_313131) | |
a7f2871e | 13933 | { |
ba8ca3e7 AM |
13934 | if (h != NULL |
13935 | && (h == htab->tls_get_addr_fd | |
13936 | || h == htab->tls_get_addr) | |
7c9cf415 | 13937 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
13938 | { |
13939 | /* Special stub used, leave nop alone. */ | |
13940 | } | |
13941 | else | |
a078d95a AM |
13942 | bfd_put_32 (input_bfd, |
13943 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
13944 | contents + rel->r_offset + 4); |
13945 | can_plt_call = TRUE; | |
a7f2871e | 13946 | } |
41bd81ab | 13947 | } |
5bd4f169 | 13948 | } |
721956f4 | 13949 | |
ba8ca3e7 | 13950 | if (!can_plt_call && h != NULL) |
721956f4 | 13951 | { |
ba8ca3e7 AM |
13952 | const char *name = h->elf.root.root.string; |
13953 | ||
13954 | if (*name == '.') | |
13955 | ++name; | |
13956 | ||
13957 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13958 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13959 | { |
ba8ca3e7 AM |
13960 | /* Allow crt1 branch to go via a toc adjusting |
13961 | stub. Other calls that never return could do | |
13962 | the same, if we could detect such. */ | |
b25116a9 | 13963 | can_plt_call = TRUE; |
6ab189d5 | 13964 | } |
ba8ca3e7 AM |
13965 | } |
13966 | ||
13967 | if (!can_plt_call) | |
13968 | { | |
13969 | /* g++ as of 20130507 emits self-calls without a | |
13970 | following nop. This is arguably wrong since we | |
13971 | have conflicting information. On the one hand a | |
13972 | global symbol and on the other a local call | |
13973 | sequence, but don't error for this special case. | |
13974 | It isn't possible to cheaply verify we have | |
13975 | exactly such a call. Allow all calls to the same | |
13976 | section. */ | |
13977 | asection *code_sec = sec; | |
13978 | ||
13979 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13980 | { |
ba8ca3e7 AM |
13981 | bfd_vma off = (relocation + addend |
13982 | - sec->output_section->vma | |
13983 | - sec->output_offset); | |
bc30df16 | 13984 | |
ba8ca3e7 | 13985 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13986 | } |
ba8ca3e7 AM |
13987 | if (code_sec == input_section) |
13988 | can_plt_call = TRUE; | |
13989 | } | |
13990 | ||
13991 | if (!can_plt_call) | |
13992 | { | |
05d0e962 AM |
13993 | if (stub_entry->stub_type >= ppc_stub_plt_call |
13994 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 13995 | info->callbacks->einfo |
695344c0 | 13996 | /* xgettext:c-format */ |
c1c8c1ef | 13997 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
13998 | "recompile with -fPIC\n"), |
13999 | input_bfd, input_section, rel->r_offset, sym_name); | |
14000 | else | |
14001 | info->callbacks->einfo | |
695344c0 | 14002 | /* xgettext:c-format */ |
c1c8c1ef | 14003 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14004 | "(-mcmodel=small toc adjust stub)\n"), |
14005 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
14006 | |
14007 | bfd_set_error (bfd_error_bad_value); | |
14008 | ret = FALSE; | |
721956f4 AM |
14009 | } |
14010 | ||
b25116a9 | 14011 | if (can_plt_call |
05d0e962 AM |
14012 | && stub_entry->stub_type >= ppc_stub_plt_call |
14013 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
14014 | unresolved_reloc = FALSE; |
14015 | } | |
14016 | ||
6abec6bc AM |
14017 | if ((stub_entry == NULL |
14018 | || stub_entry->stub_type == ppc_stub_long_branch | |
14019 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14020 | && get_opd_info (sec) != NULL) |
14021 | { | |
14022 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14023 | bfd_vma off = (relocation + addend |
14024 | - sec->output_section->vma | |
14025 | - sec->output_offset); | |
aef36ac1 | 14026 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14027 | if (dest != (bfd_vma) -1) |
14028 | { | |
14029 | relocation = dest; | |
14030 | addend = 0; | |
bc30df16 | 14031 | reloc_dest = DEST_OPD; |
8387904d AM |
14032 | } |
14033 | } | |
14034 | ||
b25116a9 AM |
14035 | /* If the branch is out of reach we ought to have a long |
14036 | branch stub. */ | |
14037 | from = (rel->r_offset | |
14038 | + input_section->output_offset | |
14039 | + input_section->output_section->vma); | |
14040 | ||
6911b7dc AM |
14041 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14042 | ? fdh->elf.other | |
14043 | : sym->st_other); | |
14044 | ||
6abec6bc AM |
14045 | if (stub_entry != NULL |
14046 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14047 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14048 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14049 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14050 | || (relocation + addend - from + max_br_offset | |
14051 | < 2 * max_br_offset))) | |
14052 | /* Don't use the stub if this branch is in range. */ | |
14053 | stub_entry = NULL; | |
b25116a9 | 14054 | |
05d0e962 AM |
14055 | if (stub_entry != NULL |
14056 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
14057 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
14058 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
14059 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
14060 | && (r_type != R_PPC64_REL24_NOTOC | |
14061 | || ((fdh ? fdh->elf.other : sym->st_other) | |
14062 | & STO_PPC64_LOCAL_MASK) == 1 << STO_PPC64_LOCAL_BIT) | |
14063 | && (relocation + addend - from + max_br_offset | |
14064 | < 2 * max_br_offset)) | |
14065 | stub_entry = NULL; | |
14066 | ||
14067 | if (stub_entry != NULL | |
14068 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
14069 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
14070 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
14071 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
14072 | && r_type == R_PPC64_REL24_NOTOC | |
14073 | && (relocation + addend - from + max_br_offset | |
14074 | < 2 * max_br_offset)) | |
14075 | stub_entry = NULL; | |
14076 | ||
b25116a9 AM |
14077 | if (stub_entry != NULL) |
14078 | { | |
14079 | /* Munge up the value and addend so that we call the stub | |
14080 | rather than the procedure directly. */ | |
a4b6fadd AM |
14081 | asection *stub_sec = stub_entry->group->stub_sec; |
14082 | ||
14083 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14084 | relocation += (stub_sec->output_offset | |
14085 | + stub_sec->output_section->vma | |
14086 | + stub_sec->size - htab->sfpr->size | |
14087 | - htab->sfpr->output_offset | |
14088 | - htab->sfpr->output_section->vma); | |
14089 | else | |
14090 | relocation = (stub_entry->stub_offset | |
14091 | + stub_sec->output_offset | |
14092 | + stub_sec->output_section->vma); | |
b25116a9 | 14093 | addend = 0; |
bc30df16 | 14094 | reloc_dest = DEST_STUB; |
3b421ab3 | 14095 | |
05d0e962 AM |
14096 | if (((stub_entry->stub_type == ppc_stub_plt_call |
14097 | && ALWAYS_EMIT_R2SAVE) | |
14098 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
14099 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 AM |
14100 | && !(h != NULL |
14101 | && (h == htab->tls_get_addr_fd | |
14102 | || h == htab->tls_get_addr) | |
14103 | && htab->params->tls_get_addr_opt) | |
3b421ab3 AM |
14104 | && rel + 1 < relend |
14105 | && rel[1].r_offset == rel->r_offset + 4 | |
14106 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14107 | relocation += 4; | |
05d0e962 AM |
14108 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
14109 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
14110 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
14111 | && r_type == R_PPC64_REL24_NOTOC) | |
14112 | relocation += 4; | |
b25116a9 AM |
14113 | } |
14114 | ||
14115 | if (insn != 0) | |
14116 | { | |
794e51c0 | 14117 | if (is_isa_v2) |
721956f4 | 14118 | { |
b25116a9 AM |
14119 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14120 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14121 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14122 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14123 | insn |= 0x02 << 21; | |
14124 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14125 | insn |= 0x08 << 21; | |
14126 | else | |
14127 | break; | |
14128 | } | |
14129 | else | |
14130 | { | |
14131 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14132 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14133 | insn ^= 0x01 << 21; |
721956f4 | 14134 | } |
b25116a9 | 14135 | |
95f0d0d2 | 14136 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14137 | } |
e86ce104 | 14138 | |
06da1e8e AM |
14139 | /* NOP out calls to undefined weak functions. |
14140 | We can thus call a weak function without first | |
14141 | checking whether the function is defined. */ | |
b25116a9 | 14142 | else if (h != NULL |
039b3fef | 14143 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14144 | && h->elf.dynindx == -1 |
05d0e962 AM |
14145 | && (r_type == R_PPC64_REL24 |
14146 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 14147 | && relocation == 0 |
4cc603a5 | 14148 | && addend == 0) |
e86ce104 | 14149 | { |
95f0d0d2 | 14150 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14151 | goto copy_reloc; |
e86ce104 | 14152 | } |
65f38f15 AM |
14153 | break; |
14154 | } | |
5bd4f169 | 14155 | |
65f38f15 | 14156 | /* Set `addend'. */ |
411e1bfb | 14157 | tls_type = 0; |
23cedd1d | 14158 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
14159 | switch (r_type) |
14160 | { | |
14161 | default: | |
cf97bcb0 AM |
14162 | /* xgettext:c-format */ |
14163 | _bfd_error_handler (_("%pB: %s unsupported"), | |
14164 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 14165 | |
65f38f15 | 14166 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14167 | ret = FALSE; |
c316a17c | 14168 | goto copy_reloc; |
5bd4f169 | 14169 | |
65f38f15 | 14170 | case R_PPC64_NONE: |
411e1bfb | 14171 | case R_PPC64_TLS: |
727fc41e AM |
14172 | case R_PPC64_TLSGD: |
14173 | case R_PPC64_TLSLD: | |
3b421ab3 | 14174 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14175 | case R_PPC64_GNU_VTINHERIT: |
14176 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14177 | case R_PPC64_ENTRY: |
c316a17c | 14178 | goto copy_reloc; |
5bd4f169 AM |
14179 | |
14180 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14181 | address in the GOT as relocation value instead of the | |
411e1bfb | 14182 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14183 | symbol and put the symbol value there. */ |
411e1bfb AM |
14184 | case R_PPC64_GOT_TLSGD16: |
14185 | case R_PPC64_GOT_TLSGD16_LO: | |
14186 | case R_PPC64_GOT_TLSGD16_HI: | |
14187 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14188 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14189 | goto dogot; |
14190 | ||
14191 | case R_PPC64_GOT_TLSLD16: | |
14192 | case R_PPC64_GOT_TLSLD16_LO: | |
14193 | case R_PPC64_GOT_TLSLD16_HI: | |
14194 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14195 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14196 | goto dogot; |
14197 | ||
14198 | case R_PPC64_GOT_TPREL16_DS: | |
14199 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14200 | case R_PPC64_GOT_TPREL16_HI: | |
14201 | case R_PPC64_GOT_TPREL16_HA: | |
14202 | tls_type = TLS_TLS | TLS_TPREL; | |
14203 | goto dogot; | |
14204 | ||
14205 | case R_PPC64_GOT_DTPREL16_DS: | |
14206 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14207 | case R_PPC64_GOT_DTPREL16_HI: | |
14208 | case R_PPC64_GOT_DTPREL16_HA: | |
14209 | tls_type = TLS_TLS | TLS_DTPREL; | |
14210 | goto dogot; | |
14211 | ||
65f38f15 AM |
14212 | case R_PPC64_GOT16: |
14213 | case R_PPC64_GOT16_LO: | |
14214 | case R_PPC64_GOT16_HI: | |
14215 | case R_PPC64_GOT16_HA: | |
14216 | case R_PPC64_GOT16_DS: | |
14217 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14218 | dogot: |
5bd4f169 AM |
14219 | { |
14220 | /* Relocation is to the entry for this symbol in the global | |
14221 | offset table. */ | |
e717da7e | 14222 | asection *got; |
d881513a | 14223 | bfd_vma *offp; |
5bd4f169 | 14224 | bfd_vma off; |
d881513a | 14225 | unsigned long indx = 0; |
927be08e | 14226 | struct got_entry *ent; |
65f38f15 | 14227 | |
d881513a AM |
14228 | if (tls_type == (TLS_TLS | TLS_LD) |
14229 | && (h == NULL | |
f5385ebf | 14230 | || !h->elf.def_dynamic)) |
927be08e | 14231 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14232 | else |
5bd4f169 | 14233 | { |
d881513a AM |
14234 | if (h != NULL) |
14235 | { | |
f0158f44 AM |
14236 | if (!htab->elf.dynamic_sections_created |
14237 | || h->elf.dynindx == -1 | |
14238 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 14239 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
14240 | /* This is actually a static link, or it is a |
14241 | -Bsymbolic link and the symbol is defined | |
14242 | locally, or the symbol was forced to be local | |
14243 | because of a version file. */ | |
14244 | ; | |
14245 | else | |
14246 | { | |
039b3fef | 14247 | indx = h->elf.dynindx; |
d881513a AM |
14248 | unresolved_reloc = FALSE; |
14249 | } | |
039b3fef | 14250 | ent = h->elf.got.glist; |
d881513a | 14251 | } |
411e1bfb | 14252 | else |
5bd4f169 | 14253 | { |
d881513a AM |
14254 | if (local_got_ents == NULL) |
14255 | abort (); | |
14256 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 14257 | } |
d881513a AM |
14258 | |
14259 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 14260 | if (ent->addend == orig_rel.r_addend |
e717da7e | 14261 | && ent->owner == input_bfd |
d881513a AM |
14262 | && ent->tls_type == tls_type) |
14263 | break; | |
5bd4f169 | 14264 | } |
411e1bfb | 14265 | |
927be08e AM |
14266 | if (ent == NULL) |
14267 | abort (); | |
14268 | if (ent->is_indirect) | |
14269 | ent = ent->got.ent; | |
14270 | offp = &ent->got.offset; | |
14271 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
14272 | if (got == NULL) |
14273 | abort (); | |
14274 | ||
411e1bfb AM |
14275 | /* The offset must always be a multiple of 8. We use the |
14276 | least significant bit to record whether we have already | |
14277 | processed this entry. */ | |
d881513a | 14278 | off = *offp; |
411e1bfb AM |
14279 | if ((off & 1) != 0) |
14280 | off &= ~1; | |
5bd4f169 AM |
14281 | else |
14282 | { | |
411e1bfb AM |
14283 | /* Generate relocs for the dynamic linker, except in |
14284 | the case of TLSLD where we'll use one entry per | |
14285 | module. */ | |
25f23106 AM |
14286 | asection *relgot; |
14287 | bfd_boolean ifunc; | |
e717da7e | 14288 | |
d881513a | 14289 | *offp = off | 1; |
25f23106 AM |
14290 | relgot = NULL; |
14291 | ifunc = (h != NULL | |
14292 | ? h->elf.type == STT_GNU_IFUNC | |
14293 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 14294 | if (ifunc) |
82e66161 AM |
14295 | { |
14296 | relgot = htab->elf.irelplt; | |
14297 | if (indx == 0) | |
14298 | htab->local_ifunc_resolver = 1; | |
14299 | else if (is_static_defined (&h->elf)) | |
14300 | htab->maybe_local_ifunc_resolver = 1; | |
14301 | } | |
f0158f44 AM |
14302 | else if (indx != 0 |
14303 | || (bfd_link_pic (info) | |
14304 | && (h == NULL | |
21d68fcd | 14305 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 14306 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
14307 | && !h->elf.def_dynamic)) |
14308 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
14309 | && bfd_link_executable (info) | |
14310 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 14311 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 14312 | if (relgot != NULL) |
5bd4f169 | 14313 | { |
e717da7e AM |
14314 | outrel.r_offset = (got->output_section->vma |
14315 | + got->output_offset | |
411e1bfb | 14316 | + off); |
4cc603a5 | 14317 | outrel.r_addend = addend; |
d881513a | 14318 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 14319 | { |
411e1bfb | 14320 | outrel.r_addend = 0; |
e515b051 | 14321 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
14322 | if (tls_type == (TLS_TLS | TLS_GD)) |
14323 | { | |
e717da7e AM |
14324 | loc = relgot->contents; |
14325 | loc += (relgot->reloc_count++ | |
d881513a AM |
14326 | * sizeof (Elf64_External_Rela)); |
14327 | bfd_elf64_swap_reloca_out (output_bfd, | |
14328 | &outrel, loc); | |
e515b051 | 14329 | outrel.r_offset += 8; |
4cc603a5 | 14330 | outrel.r_addend = addend; |
d881513a AM |
14331 | outrel.r_info |
14332 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 14333 | } |
411e1bfb | 14334 | } |
951fd09b | 14335 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 14336 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 14337 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14338 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
14339 | else if (indx != 0) |
14340 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
14341 | else | |
81407a69 | 14342 | { |
25f23106 AM |
14343 | if (ifunc) |
14344 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14345 | else | |
14346 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
14347 | |
14348 | /* Write the .got section contents for the sake | |
14349 | of prelink. */ | |
e717da7e | 14350 | loc = got->contents + off; |
23fbd6fa JJ |
14351 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
14352 | loc); | |
81407a69 | 14353 | } |
81407a69 AM |
14354 | |
14355 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
14356 | { |
14357 | outrel.r_addend += relocation; | |
14358 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
14359 | { |
14360 | if (htab->elf.tls_sec == NULL) | |
14361 | outrel.r_addend = 0; | |
14362 | else | |
14363 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
14364 | } | |
e515b051 | 14365 | } |
e717da7e AM |
14366 | loc = relgot->contents; |
14367 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
14368 | * sizeof (Elf64_External_Rela)); |
14369 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
14370 | } | |
14371 | ||
ad8e1ba5 | 14372 | /* Init the .got section contents here if we're not |
81407a69 | 14373 | emitting a reloc. */ |
d881513a | 14374 | else |
411e1bfb | 14375 | { |
4cc603a5 | 14376 | relocation += addend; |
f0158f44 | 14377 | if (tls_type != 0) |
411e1bfb | 14378 | { |
989f9879 AM |
14379 | if (htab->elf.tls_sec == NULL) |
14380 | relocation = 0; | |
14381 | else | |
14382 | { | |
f0158f44 AM |
14383 | if (tls_type & TLS_LD) |
14384 | relocation = 0; | |
14385 | else | |
14386 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 14387 | if (tls_type & TLS_TPREL) |
989f9879 AM |
14388 | relocation += DTP_OFFSET - TP_OFFSET; |
14389 | } | |
5bd4f169 | 14390 | |
f0158f44 | 14391 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
14392 | { |
14393 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14394 | got->contents + off + 8); |
676ee2b5 | 14395 | relocation = 1; |
7b609f53 | 14396 | } |
411e1bfb AM |
14397 | } |
14398 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14399 | got->contents + off); |
5bd4f169 AM |
14400 | } |
14401 | } | |
14402 | ||
65f38f15 AM |
14403 | if (off >= (bfd_vma) -2) |
14404 | abort (); | |
14405 | ||
bf102f86 | 14406 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 14407 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 14408 | } |
65f38f15 AM |
14409 | break; |
14410 | ||
14411 | case R_PPC64_PLT16_HA: | |
14412 | case R_PPC64_PLT16_HI: | |
14413 | case R_PPC64_PLT16_LO: | |
08be3224 | 14414 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
14415 | case R_PPC64_PLT32: |
14416 | case R_PPC64_PLT64: | |
23cedd1d AM |
14417 | case R_PPC64_PLTSEQ: |
14418 | case R_PPC64_PLTCALL: | |
65f38f15 AM |
14419 | /* Relocation is to the entry for this symbol in the |
14420 | procedure linkage table. */ | |
23cedd1d | 14421 | unresolved_reloc = TRUE; |
cbf95972 AM |
14422 | { |
14423 | struct plt_entry **plt_list = NULL; | |
14424 | if (h != NULL) | |
14425 | plt_list = &h->elf.plt.plist; | |
14426 | else if (local_got_ents != NULL) | |
14427 | { | |
14428 | struct plt_entry **local_plt = (struct plt_entry **) | |
14429 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 14430 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
14431 | } |
14432 | if (plt_list) | |
14433 | { | |
14434 | struct plt_entry *ent; | |
65f38f15 | 14435 | |
cbf95972 AM |
14436 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
14437 | if (ent->plt.offset != (bfd_vma) -1 | |
14438 | && ent->addend == orig_rel.r_addend) | |
14439 | { | |
14440 | asection *plt; | |
08be3224 | 14441 | bfd_vma got; |
cbf95972 AM |
14442 | |
14443 | plt = htab->elf.splt; | |
14444 | if (!htab->elf.dynamic_sections_created | |
14445 | || h == NULL | |
14446 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
14447 | { |
14448 | if (h != NULL | |
14449 | ? h->elf.type == STT_GNU_IFUNC | |
14450 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14451 | plt = htab->elf.iplt; | |
14452 | else | |
14453 | plt = htab->pltlocal; | |
14454 | } | |
14455 | relocation = (plt->output_section->vma | |
14456 | + plt->output_offset | |
14457 | + ent->plt.offset); | |
08be3224 | 14458 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
14459 | || r_type == R_PPC64_PLT16_HI |
14460 | || r_type == R_PPC64_PLT16_LO | |
14461 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
14462 | { |
14463 | got = (elf_gp (output_bfd) | |
14464 | + htab->sec_info[input_section->id].toc_off); | |
14465 | relocation -= got; | |
14466 | } | |
cbf95972 AM |
14467 | addend = 0; |
14468 | unresolved_reloc = FALSE; | |
14469 | break; | |
14470 | } | |
14471 | } | |
14472 | } | |
65f38f15 | 14473 | break; |
5bd4f169 | 14474 | |
0b13192e AM |
14475 | case R_PPC64_TOC: |
14476 | /* Relocation value is TOC base. */ | |
14477 | relocation = TOCstart; | |
cf35638d | 14478 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 14479 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
14480 | else if (unresolved_reloc) |
14481 | ; | |
6f20ed8a AM |
14482 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
14483 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
14484 | else |
14485 | unresolved_reloc = TRUE; | |
ab96bf03 | 14486 | goto dodyn; |
0b13192e | 14487 | |
5bd4f169 AM |
14488 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14489 | which is the address of the start of the TOC plus 0x8000. | |
14490 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14491 | in this order. */ | |
65f38f15 AM |
14492 | case R_PPC64_TOC16: |
14493 | case R_PPC64_TOC16_LO: | |
14494 | case R_PPC64_TOC16_HI: | |
14495 | case R_PPC64_TOC16_DS: | |
14496 | case R_PPC64_TOC16_LO_DS: | |
14497 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 14498 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
14499 | break; |
14500 | ||
14501 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14502 | case R_PPC64_SECTOFF: |
14503 | case R_PPC64_SECTOFF_LO: | |
14504 | case R_PPC64_SECTOFF_HI: | |
14505 | case R_PPC64_SECTOFF_DS: | |
14506 | case R_PPC64_SECTOFF_LO_DS: | |
14507 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14508 | if (sec != NULL) |
65f38f15 | 14509 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14510 | break; |
14511 | ||
25f23106 AM |
14512 | case R_PPC64_REL16: |
14513 | case R_PPC64_REL16_LO: | |
14514 | case R_PPC64_REL16_HI: | |
14515 | case R_PPC64_REL16_HA: | |
a680de9a | 14516 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
14517 | break; |
14518 | ||
721956f4 AM |
14519 | case R_PPC64_REL14: |
14520 | case R_PPC64_REL14_BRNTAKEN: | |
14521 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 14522 | case R_PPC64_REL24: |
05d0e962 | 14523 | case R_PPC64_REL24_NOTOC: |
5d1634d7 AM |
14524 | break; |
14525 | ||
411e1bfb AM |
14526 | case R_PPC64_TPREL16: |
14527 | case R_PPC64_TPREL16_LO: | |
14528 | case R_PPC64_TPREL16_HI: | |
14529 | case R_PPC64_TPREL16_HA: | |
14530 | case R_PPC64_TPREL16_DS: | |
14531 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14532 | case R_PPC64_TPREL16_HIGH: |
14533 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14534 | case R_PPC64_TPREL16_HIGHER: |
14535 | case R_PPC64_TPREL16_HIGHERA: | |
14536 | case R_PPC64_TPREL16_HIGHEST: | |
14537 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14538 | if (h != NULL |
14539 | && h->elf.root.type == bfd_link_hash_undefweak | |
14540 | && h->elf.dynindx == -1) | |
14541 | { | |
14542 | /* Make this relocation against an undefined weak symbol | |
14543 | resolve to zero. This is really just a tweak, since | |
14544 | code using weak externs ought to check that they are | |
14545 | defined before using them. */ | |
14546 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14547 | ||
95f0d0d2 | 14548 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
14549 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
14550 | if (insn != 0) | |
95f0d0d2 | 14551 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
14552 | break; |
14553 | } | |
989f9879 AM |
14554 | if (htab->elf.tls_sec != NULL) |
14555 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
14556 | /* The TPREL16 relocs shouldn't really be used in shared |
14557 | libs or with non-local symbols as that will result in | |
14558 | DT_TEXTREL being set, but support them anyway. */ | |
14559 | goto dodyn; | |
411e1bfb AM |
14560 | |
14561 | case R_PPC64_DTPREL16: | |
14562 | case R_PPC64_DTPREL16_LO: | |
14563 | case R_PPC64_DTPREL16_HI: | |
14564 | case R_PPC64_DTPREL16_HA: | |
14565 | case R_PPC64_DTPREL16_DS: | |
14566 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14567 | case R_PPC64_DTPREL16_HIGH: |
14568 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14569 | case R_PPC64_DTPREL16_HIGHER: |
14570 | case R_PPC64_DTPREL16_HIGHERA: | |
14571 | case R_PPC64_DTPREL16_HIGHEST: | |
14572 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
14573 | if (htab->elf.tls_sec != NULL) |
14574 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14575 | break; |
14576 | ||
45965137 AM |
14577 | case R_PPC64_ADDR64_LOCAL: |
14578 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14579 | ? h->elf.other | |
14580 | : sym->st_other); | |
14581 | break; | |
14582 | ||
e515b051 AM |
14583 | case R_PPC64_DTPMOD64: |
14584 | relocation = 1; | |
14585 | addend = 0; | |
14586 | goto dodyn; | |
14587 | ||
411e1bfb | 14588 | case R_PPC64_TPREL64: |
989f9879 AM |
14589 | if (htab->elf.tls_sec != NULL) |
14590 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
14591 | goto dodyn; |
14592 | ||
14593 | case R_PPC64_DTPREL64: | |
989f9879 AM |
14594 | if (htab->elf.tls_sec != NULL) |
14595 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 14596 | /* Fall through. */ |
411e1bfb | 14597 | |
65f38f15 AM |
14598 | /* Relocations that may need to be propagated if this is a |
14599 | dynamic object. */ | |
04c9666a | 14600 | case R_PPC64_REL30: |
65f38f15 AM |
14601 | case R_PPC64_REL32: |
14602 | case R_PPC64_REL64: | |
14603 | case R_PPC64_ADDR14: | |
14604 | case R_PPC64_ADDR14_BRNTAKEN: | |
14605 | case R_PPC64_ADDR14_BRTAKEN: | |
14606 | case R_PPC64_ADDR16: | |
14607 | case R_PPC64_ADDR16_DS: | |
14608 | case R_PPC64_ADDR16_HA: | |
14609 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14610 | case R_PPC64_ADDR16_HIGH: |
14611 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14612 | case R_PPC64_ADDR16_HIGHER: |
14613 | case R_PPC64_ADDR16_HIGHERA: | |
14614 | case R_PPC64_ADDR16_HIGHEST: | |
14615 | case R_PPC64_ADDR16_HIGHESTA: | |
14616 | case R_PPC64_ADDR16_LO: | |
14617 | case R_PPC64_ADDR16_LO_DS: | |
14618 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14619 | case R_PPC64_ADDR32: |
14620 | case R_PPC64_ADDR64: | |
14621 | case R_PPC64_UADDR16: | |
14622 | case R_PPC64_UADDR32: | |
14623 | case R_PPC64_UADDR64: | |
411e1bfb | 14624 | dodyn: |
5d1634d7 | 14625 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14626 | break; |
14627 | ||
41bd81ab AM |
14628 | if (NO_OPD_RELOCS && is_opd) |
14629 | break; | |
14630 | ||
8a9e8e72 | 14631 | if (bfd_link_pic (info) |
b1b07054 AM |
14632 | ? ((h == NULL |
14633 | || h->dyn_relocs != NULL) | |
14634 | && ((h != NULL && pc_dynrelocs (h)) | |
14635 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
14636 | : (h != NULL |
14637 | ? h->dyn_relocs != NULL | |
d311bc8b | 14638 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 14639 | { |
b34976b6 | 14640 | bfd_boolean skip, relocate; |
65f38f15 | 14641 | asection *sreloc; |
1cf1f670 | 14642 | bfd_vma out_off; |
82e66161 | 14643 | long indx = 0; |
65f38f15 AM |
14644 | |
14645 | /* When generating a dynamic object, these relocations | |
14646 | are copied into the output file to be resolved at run | |
14647 | time. */ | |
14648 | ||
b34976b6 AM |
14649 | skip = FALSE; |
14650 | relocate = FALSE; | |
65f38f15 | 14651 | |
1cf1f670 AM |
14652 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14653 | input_section, rel->r_offset); | |
14654 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14655 | skip = TRUE; |
1cf1f670 | 14656 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14657 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14658 | out_off += (input_section->output_section->vma |
14659 | + input_section->output_offset); | |
14660 | outrel.r_offset = out_off; | |
411e1bfb | 14661 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14662 | |
1cf1f670 AM |
14663 | /* Optimize unaligned reloc use. */ |
14664 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14665 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14666 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14667 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14668 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14669 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14670 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14671 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14672 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14673 | ||
65f38f15 | 14674 | if (skip) |
0bb2d96a | 14675 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14676 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14677 | && !is_opd |
14678 | && r_type != R_PPC64_TOC) | |
14acf4dc | 14679 | { |
82e66161 AM |
14680 | indx = h->elf.dynindx; |
14681 | BFD_ASSERT (indx != -1); | |
14682 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 14683 | } |
65f38f15 AM |
14684 | else |
14685 | { | |
41bd81ab AM |
14686 | /* This symbol is local, or marked to become local, |
14687 | or this is an opd section reloc which must point | |
14688 | at a local function. */ | |
65f38f15 | 14689 | outrel.r_addend += relocation; |
e86ce104 | 14690 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14691 | { |
3fad3c7c | 14692 | if (is_opd && h != NULL) |
afbe61cf AM |
14693 | { |
14694 | /* Lie about opd entries. This case occurs | |
14695 | when building shared libraries and we | |
14696 | reference a function in another shared | |
3fad3c7c AM |
14697 | lib. The same thing happens for a weak |
14698 | definition in an application that's | |
14699 | overridden by a strong definition in a | |
14700 | shared lib. (I believe this is a generic | |
14701 | bug in binutils handling of weak syms.) | |
14702 | In these cases we won't use the opd | |
1e2f5b6e | 14703 | entry in this lib. */ |
b34976b6 | 14704 | unresolved_reloc = FALSE; |
afbe61cf | 14705 | } |
25f23106 AM |
14706 | if (!is_opd |
14707 | && r_type == R_PPC64_ADDR64 | |
14708 | && (h != NULL | |
14709 | ? h->elf.type == STT_GNU_IFUNC | |
14710 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14711 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14712 | else | |
14713 | { | |
14714 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14715 | |
25f23106 AM |
14716 | /* We need to relocate .opd contents for ld.so. |
14717 | Prelink also wants simple and consistent rules | |
14718 | for relocs. This make all RELATIVE relocs have | |
14719 | *r_offset equal to r_addend. */ | |
14720 | relocate = TRUE; | |
14721 | } | |
65f38f15 AM |
14722 | } |
14723 | else | |
14724 | { | |
25f23106 AM |
14725 | if (h != NULL |
14726 | ? h->elf.type == STT_GNU_IFUNC | |
14727 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14728 | { | |
25f53a85 | 14729 | info->callbacks->einfo |
695344c0 | 14730 | /* xgettext:c-format */ |
174d0a74 | 14731 | (_("%H: %s for indirect " |
c1c8c1ef | 14732 | "function `%pT' unsupported\n"), |
25f53a85 | 14733 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14734 | ppc64_elf_howto_table[r_type]->name, |
14735 | sym_name); | |
14736 | ret = FALSE; | |
14737 | } | |
cf35638d | 14738 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14739 | ; |
14740 | else if (sec == NULL || sec->owner == NULL) | |
14741 | { | |
14742 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14743 | return FALSE; |
65f38f15 AM |
14744 | } |
14745 | else | |
14746 | { | |
14747 | asection *osec; | |
14748 | ||
14749 | osec = sec->output_section; | |
14750 | indx = elf_section_data (osec)->dynindx; | |
14751 | ||
74541ad4 AM |
14752 | if (indx == 0) |
14753 | { | |
14754 | if ((osec->flags & SEC_READONLY) == 0 | |
14755 | && htab->elf.data_index_section != NULL) | |
14756 | osec = htab->elf.data_index_section; | |
14757 | else | |
14758 | osec = htab->elf.text_index_section; | |
14759 | indx = elf_section_data (osec)->dynindx; | |
14760 | } | |
14761 | BFD_ASSERT (indx != 0); | |
14762 | ||
65f38f15 AM |
14763 | /* We are turning this relocation into one |
14764 | against a section symbol, so subtract out | |
14765 | the output section's address but not the | |
14766 | offset of the input section in the output | |
14767 | section. */ | |
14768 | outrel.r_addend -= osec->vma; | |
14769 | } | |
14770 | ||
14771 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14772 | } | |
14773 | } | |
14774 | ||
14775 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14776 | if (h != NULL |
14777 | ? h->elf.type == STT_GNU_IFUNC | |
14778 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
14779 | { |
14780 | sreloc = htab->elf.irelplt; | |
14781 | if (indx == 0) | |
14782 | htab->local_ifunc_resolver = 1; | |
14783 | else if (is_static_defined (&h->elf)) | |
14784 | htab->maybe_local_ifunc_resolver = 1; | |
14785 | } | |
65f38f15 AM |
14786 | if (sreloc == NULL) |
14787 | abort (); | |
14788 | ||
dfbb6ac9 AM |
14789 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14790 | >= sreloc->size) | |
14791 | abort (); | |
947216bf AM |
14792 | loc = sreloc->contents; |
14793 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14794 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14795 | ||
14796 | /* If this reloc is against an external symbol, it will | |
14797 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14798 | anything now. However, for the sake of prelink ensure |
14799 | that the section contents are a known value. */ | |
2cdcc330 | 14800 | if (!relocate) |
81407a69 AM |
14801 | { |
14802 | unresolved_reloc = FALSE; | |
14803 | /* The value chosen here is quite arbitrary as ld.so | |
14804 | ignores section contents except for the special | |
14805 | case of .opd where the contents might be accessed | |
14806 | before relocation. Choose zero, as that won't | |
14807 | cause reloc overflow. */ | |
14808 | relocation = 0; | |
14809 | addend = 0; | |
14810 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14811 | to improve backward compatibility with older | |
14812 | versions of ld. */ | |
14813 | if (r_type == R_PPC64_ADDR64) | |
14814 | addend = outrel.r_addend; | |
14815 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14816 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 14817 | addend = outrel.r_offset; |
81407a69 | 14818 | } |
65f38f15 | 14819 | } |
5bd4f169 AM |
14820 | break; |
14821 | ||
65f38f15 AM |
14822 | case R_PPC64_COPY: |
14823 | case R_PPC64_GLOB_DAT: | |
14824 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14825 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14826 | case R_PPC64_RELATIVE: |
14827 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14828 | files. */ | |
ae9a127f | 14829 | /* Fall through. */ |
65f38f15 AM |
14830 | |
14831 | case R_PPC64_PLTGOT16: | |
14832 | case R_PPC64_PLTGOT16_DS: | |
14833 | case R_PPC64_PLTGOT16_HA: | |
14834 | case R_PPC64_PLTGOT16_HI: | |
14835 | case R_PPC64_PLTGOT16_LO: | |
14836 | case R_PPC64_PLTGOT16_LO_DS: | |
14837 | case R_PPC64_PLTREL32: | |
14838 | case R_PPC64_PLTREL64: | |
14839 | /* These ones haven't been implemented yet. */ | |
14840 | ||
25f53a85 | 14841 | info->callbacks->einfo |
695344c0 | 14842 | /* xgettext:c-format */ |
c1c8c1ef | 14843 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 14844 | input_bfd, |
4ce794b7 | 14845 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14846 | |
14847 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14848 | ret = FALSE; |
c316a17c | 14849 | goto copy_reloc; |
65f38f15 | 14850 | } |
5bd4f169 | 14851 | |
67f0cbdb AM |
14852 | /* Multi-instruction sequences that access the TOC can be |
14853 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 14854 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
14855 | switch (r_type) |
14856 | { | |
14857 | default: | |
14858 | break; | |
14859 | ||
14860 | case R_PPC64_GOT_TLSLD16_HI: | |
14861 | case R_PPC64_GOT_TLSGD16_HI: | |
14862 | case R_PPC64_GOT_TPREL16_HI: | |
14863 | case R_PPC64_GOT_DTPREL16_HI: | |
14864 | case R_PPC64_GOT16_HI: | |
14865 | case R_PPC64_TOC16_HI: | |
14866 | /* These relocs would only be useful if building up an | |
14867 | offset to later add to r2, perhaps in an indexed | |
14868 | addressing mode instruction. Don't try to optimize. | |
14869 | Unfortunately, the possibility of someone building up an | |
14870 | offset like this or even with the HA relocs, means that | |
14871 | we need to check the high insn when optimizing the low | |
14872 | insn. */ | |
14873 | break; | |
14874 | ||
23cedd1d AM |
14875 | case R_PPC64_PLTCALL: |
14876 | if (unresolved_reloc) | |
14877 | { | |
14878 | /* No plt entry. Make this into a direct call. */ | |
14879 | bfd_byte *p = contents + rel->r_offset; | |
14880 | insn = bfd_get_32 (input_bfd, p); | |
14881 | insn &= 1; | |
14882 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
14883 | bfd_put_32 (input_bfd, NOP, p + 4); | |
14884 | unresolved_reloc = save_unresolved_reloc; | |
14885 | r_type = R_PPC64_REL24; | |
14886 | } | |
14887 | break; | |
14888 | ||
14889 | case R_PPC64_PLTSEQ: | |
14890 | if (unresolved_reloc) | |
14891 | { | |
14892 | unresolved_reloc = FALSE; | |
14893 | goto nop_it; | |
14894 | } | |
14895 | break; | |
14896 | ||
14897 | case R_PPC64_PLT16_HA: | |
14898 | if (unresolved_reloc) | |
14899 | { | |
14900 | unresolved_reloc = FALSE; | |
14901 | goto nop_it; | |
14902 | } | |
14903 | /* Fall through. */ | |
67f0cbdb AM |
14904 | case R_PPC64_GOT_TLSLD16_HA: |
14905 | case R_PPC64_GOT_TLSGD16_HA: | |
14906 | case R_PPC64_GOT_TPREL16_HA: | |
14907 | case R_PPC64_GOT_DTPREL16_HA: | |
14908 | case R_PPC64_GOT16_HA: | |
14909 | case R_PPC64_TOC16_HA: | |
98528052 | 14910 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14911 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 14912 | { |
23cedd1d AM |
14913 | bfd_byte *p; |
14914 | nop_it: | |
14915 | p = contents + (rel->r_offset & ~3); | |
98528052 | 14916 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 14917 | goto copy_reloc; |
98528052 | 14918 | } |
67f0cbdb AM |
14919 | break; |
14920 | ||
23cedd1d AM |
14921 | case R_PPC64_PLT16_LO: |
14922 | case R_PPC64_PLT16_LO_DS: | |
14923 | if (unresolved_reloc) | |
14924 | { | |
14925 | unresolved_reloc = FALSE; | |
14926 | goto nop_it; | |
14927 | } | |
14928 | /* Fall through. */ | |
67f0cbdb AM |
14929 | case R_PPC64_GOT_TLSLD16_LO: |
14930 | case R_PPC64_GOT_TLSGD16_LO: | |
14931 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14932 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14933 | case R_PPC64_GOT16_LO: | |
14934 | case R_PPC64_GOT16_LO_DS: | |
14935 | case R_PPC64_TOC16_LO: | |
14936 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 14937 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14938 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
14939 | { |
14940 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14941 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
14942 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
14943 | { | |
14944 | /* Transform addic to addi when we change reg. */ | |
14945 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
14946 | insn |= (14u << 26) | (2 << 16); | |
14947 | } | |
14948 | else | |
67f0cbdb | 14949 | { |
98528052 AM |
14950 | insn &= ~(0x1f << 16); |
14951 | insn |= 2 << 16; | |
67f0cbdb | 14952 | } |
560c8763 | 14953 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
14954 | } |
14955 | break; | |
9a23f96e AM |
14956 | |
14957 | case R_PPC64_TPREL16_HA: | |
14958 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
14959 | { | |
14960 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14961 | insn = bfd_get_32 (input_bfd, p); | |
14962 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
14963 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
14964 | /* xgettext:c-format */ | |
14965 | info->callbacks->minfo | |
14966 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
14967 | input_bfd, input_section, rel->r_offset, |
14968 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 14969 | else |
d830549d AM |
14970 | { |
14971 | bfd_put_32 (input_bfd, NOP, p); | |
14972 | goto copy_reloc; | |
14973 | } | |
9a23f96e AM |
14974 | } |
14975 | break; | |
14976 | ||
14977 | case R_PPC64_TPREL16_LO: | |
14978 | case R_PPC64_TPREL16_LO_DS: | |
14979 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
14980 | { | |
14981 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14982 | insn = bfd_get_32 (input_bfd, p); | |
14983 | insn &= ~(0x1f << 16); | |
14984 | insn |= 13 << 16; | |
14985 | bfd_put_32 (input_bfd, insn, p); | |
14986 | } | |
14987 | break; | |
67f0cbdb AM |
14988 | } |
14989 | ||
65f38f15 AM |
14990 | /* Do any further special processing. */ |
14991 | switch (r_type) | |
14992 | { | |
14993 | default: | |
14994 | break; | |
14995 | ||
25f23106 | 14996 | case R_PPC64_REL16_HA: |
a680de9a | 14997 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
14998 | case R_PPC64_ADDR16_HA: |
14999 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15000 | case R_PPC64_ADDR16_HIGHERA: |
15001 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15002 | case R_PPC64_TOC16_HA: |
15003 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15004 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15005 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15006 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15007 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15008 | case R_PPC64_DTPREL16_HA: |
15009 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15010 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15011 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15012 | /* It's just possible that this symbol is a weak symbol |
15013 | that's not actually defined anywhere. In that case, | |
15014 | 'sec' would be NULL, and we should leave the symbol | |
15015 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15016 | if (sec == NULL) |
15017 | break; | |
1a0670f3 | 15018 | /* Fall through. */ |
5c5f6e17 AM |
15019 | |
15020 | case R_PPC64_GOT16_HA: | |
15021 | case R_PPC64_PLTGOT16_HA: | |
15022 | case R_PPC64_PLT16_HA: | |
15023 | case R_PPC64_GOT_TLSGD16_HA: | |
15024 | case R_PPC64_GOT_TLSLD16_HA: | |
15025 | case R_PPC64_GOT_TPREL16_HA: | |
15026 | case R_PPC64_GOT_DTPREL16_HA: | |
15027 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15028 | Bits 0:15 are not used. */ | |
15029 | addend += 0x8000; | |
65f38f15 AM |
15030 | break; |
15031 | ||
15032 | case R_PPC64_ADDR16_DS: | |
15033 | case R_PPC64_ADDR16_LO_DS: | |
15034 | case R_PPC64_GOT16_DS: | |
15035 | case R_PPC64_GOT16_LO_DS: | |
15036 | case R_PPC64_PLT16_LO_DS: | |
15037 | case R_PPC64_SECTOFF_DS: | |
15038 | case R_PPC64_SECTOFF_LO_DS: | |
15039 | case R_PPC64_TOC16_DS: | |
15040 | case R_PPC64_TOC16_LO_DS: | |
15041 | case R_PPC64_PLTGOT16_DS: | |
15042 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15043 | case R_PPC64_GOT_TPREL16_DS: |
15044 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15045 | case R_PPC64_GOT_DTPREL16_DS: | |
15046 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15047 | case R_PPC64_TPREL16_DS: | |
15048 | case R_PPC64_TPREL16_LO_DS: | |
15049 | case R_PPC64_DTPREL16_DS: | |
15050 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15051 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15052 | mask = 3; | |
a680de9a PB |
15053 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15054 | the value must be a multiple of 16. This is somewhat of | |
15055 | a hack, but the "correct" way to do this by defining _DQ | |
15056 | forms of all the _DS relocs bloats all reloc switches in | |
15057 | this file. It doesn't make much sense to use these | |
15058 | relocs in data, so testing the insn should be safe. */ | |
15059 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15060 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15061 | mask = 15; |
a680de9a PB |
15062 | relocation += addend; |
15063 | addend = insn & (mask ^ 3); | |
15064 | if ((relocation & mask) != 0) | |
65f38f15 | 15065 | { |
a680de9a | 15066 | relocation ^= relocation & mask; |
25f53a85 | 15067 | info->callbacks->einfo |
695344c0 | 15068 | /* xgettext:c-format */ |
174d0a74 | 15069 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 15070 | input_bfd, input_section, rel->r_offset, |
d830549d | 15071 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 15072 | mask + 1); |
65f38f15 | 15073 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15074 | ret = FALSE; |
c316a17c | 15075 | goto copy_reloc; |
65f38f15 AM |
15076 | } |
15077 | break; | |
5bd4f169 AM |
15078 | } |
15079 | ||
239e1f3a AM |
15080 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15081 | because such sections are not SEC_ALLOC and thus ld.so will | |
15082 | not process them. */ | |
d830549d | 15083 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 15084 | if (unresolved_reloc |
239e1f3a | 15085 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15086 | && h->elf.def_dynamic) |
15087 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15088 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15089 | { |
25f53a85 | 15090 | info->callbacks->einfo |
695344c0 | 15091 | /* xgettext:c-format */ |
c1c8c1ef | 15092 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 15093 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15094 | howto->name, |
039b3fef | 15095 | h->elf.root.root.string); |
b34976b6 | 15096 | ret = FALSE; |
9c07fe7c | 15097 | } |
5bd4f169 | 15098 | |
b80eed39 AM |
15099 | /* 16-bit fields in insns mostly have signed values, but a |
15100 | few insns have 16-bit unsigned values. Really, we should | |
15101 | have different reloc types. */ | |
15102 | if (howto->complain_on_overflow != complain_overflow_dont | |
15103 | && howto->dst_mask == 0xffff | |
15104 | && (input_section->flags & SEC_CODE) != 0) | |
15105 | { | |
15106 | enum complain_overflow complain = complain_overflow_signed; | |
15107 | ||
15108 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15109 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15110 | complain = complain_overflow_bitfield; | |
15111 | else if (howto->rightshift == 0 | |
15112 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15113 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15114 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15115 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15116 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15117 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15118 | complain = complain_overflow_unsigned; |
15119 | if (howto->complain_on_overflow != complain) | |
15120 | { | |
15121 | alt_howto = *howto; | |
15122 | alt_howto.complain_on_overflow = complain; | |
15123 | howto = &alt_howto; | |
15124 | } | |
15125 | } | |
15126 | ||
a680de9a PB |
15127 | if (r_type == R_PPC64_REL16DX_HA) |
15128 | { | |
15129 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15130 | if (rel->r_offset + 4 > input_section->size) | |
15131 | r = bfd_reloc_outofrange; | |
15132 | else | |
15133 | { | |
15134 | relocation += addend; | |
15135 | relocation -= (rel->r_offset | |
15136 | + input_section->output_offset | |
15137 | + input_section->output_section->vma); | |
3de43e7b | 15138 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
15139 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
15140 | insn &= ~0x1fffc1; | |
3de43e7b | 15141 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
15142 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15143 | r = bfd_reloc_ok; | |
3de43e7b | 15144 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
15145 | r = bfd_reloc_overflow; |
15146 | } | |
15147 | } | |
15148 | else | |
15149 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15150 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15151 | |
ef60b7ff | 15152 | if (r != bfd_reloc_ok) |
5bd4f169 | 15153 | { |
bc30df16 | 15154 | char *more_info = NULL; |
b80eed39 | 15155 | const char *reloc_name = howto->name; |
bc30df16 AM |
15156 | |
15157 | if (reloc_dest != DEST_NORMAL) | |
15158 | { | |
15159 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15160 | if (more_info != NULL) | |
15161 | { | |
15162 | strcpy (more_info, reloc_name); | |
15163 | strcat (more_info, (reloc_dest == DEST_OPD | |
15164 | ? " (OPD)" : " (stub)")); | |
15165 | reloc_name = more_info; | |
15166 | } | |
15167 | } | |
15168 | ||
cd27b276 | 15169 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15170 | { |
8131c122 AM |
15171 | /* On code like "if (foo) foo();" don't report overflow |
15172 | on a branch to zero when foo is undefined. */ | |
15173 | if (!warned | |
15174 | && (reloc_dest == DEST_STUB | |
15175 | || !(h != NULL | |
15176 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15177 | || h->elf.root.type == bfd_link_hash_undefined) | |
15178 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15179 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15180 | sym_name, reloc_name, | |
15181 | orig_rel.r_addend, | |
15182 | input_bfd, input_section, | |
15183 | rel->r_offset); | |
ef60b7ff AM |
15184 | } |
15185 | else | |
15186 | { | |
25f53a85 | 15187 | info->callbacks->einfo |
695344c0 | 15188 | /* xgettext:c-format */ |
c1c8c1ef | 15189 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 15190 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15191 | reloc_name, sym_name, (int) r); |
b34976b6 | 15192 | ret = FALSE; |
ef60b7ff | 15193 | } |
bc30df16 AM |
15194 | if (more_info != NULL) |
15195 | free (more_info); | |
5bd4f169 | 15196 | } |
c316a17c AM |
15197 | copy_reloc: |
15198 | if (wrel != rel) | |
15199 | *wrel = *rel; | |
15200 | } | |
15201 | ||
15202 | if (wrel != rel) | |
15203 | { | |
15204 | Elf_Internal_Shdr *rel_hdr; | |
15205 | size_t deleted = rel - wrel; | |
15206 | ||
15207 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15208 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15209 | if (rel_hdr->sh_size == 0) | |
15210 | { | |
15211 | /* It is too late to remove an empty reloc section. Leave | |
15212 | one NONE reloc. | |
15213 | ??? What is wrong with an empty section??? */ | |
15214 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15215 | deleted -= 1; | |
15216 | } | |
15217 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15218 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15219 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15220 | } |
15221 | ||
645ea6a9 AM |
15222 | /* If we're emitting relocations, then shortly after this function |
15223 | returns, reloc offsets and addends for this section will be | |
15224 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15225 | file rather than the input. Save a copy of the relocs for |
15226 | opd_entry_value. */ | |
0e1862bb | 15227 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15228 | { |
15229 | bfd_size_type amt; | |
15230 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15231 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
15232 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
15233 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
15234 | if (rel == NULL) |
15235 | return FALSE; | |
15236 | memcpy (rel, relocs, amt); | |
15237 | } | |
5bd4f169 AM |
15238 | return ret; |
15239 | } | |
15240 | ||
754021d0 AM |
15241 | /* Adjust the value of any local symbols in opd sections. */ |
15242 | ||
6e0b88f1 | 15243 | static int |
754021d0 AM |
15244 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
15245 | const char *name ATTRIBUTE_UNUSED, | |
15246 | Elf_Internal_Sym *elfsym, | |
15247 | asection *input_sec, | |
15248 | struct elf_link_hash_entry *h) | |
15249 | { | |
74f0fb50 AM |
15250 | struct _opd_sec_data *opd; |
15251 | long adjust; | |
754021d0 AM |
15252 | bfd_vma value; |
15253 | ||
4025353c | 15254 | if (h != NULL) |
6e0b88f1 | 15255 | return 1; |
4025353c | 15256 | |
74f0fb50 AM |
15257 | opd = get_opd_info (input_sec); |
15258 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 15259 | return 1; |
754021d0 AM |
15260 | |
15261 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 15262 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
15263 | value -= input_sec->output_section->vma; |
15264 | ||
51aecdc5 | 15265 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 15266 | if (adjust == -1) |
6e0b88f1 AM |
15267 | return 2; |
15268 | ||
15269 | elfsym->st_value += adjust; | |
15270 | return 1; | |
754021d0 AM |
15271 | } |
15272 | ||
5bd4f169 AM |
15273 | /* Finish up dynamic symbol handling. We set the contents of various |
15274 | dynamic sections here. */ | |
15275 | ||
b34976b6 | 15276 | static bfd_boolean |
4ce794b7 AM |
15277 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
15278 | struct bfd_link_info *info, | |
15279 | struct elf_link_hash_entry *h, | |
4aef7643 | 15280 | Elf_Internal_Sym *sym) |
5bd4f169 | 15281 | { |
65f38f15 | 15282 | struct ppc_link_hash_table *htab; |
8387904d | 15283 | struct plt_entry *ent; |
5bd4f169 | 15284 | |
65f38f15 | 15285 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15286 | if (htab == NULL) |
15287 | return FALSE; | |
5bd4f169 | 15288 | |
49c09209 AM |
15289 | if (!htab->opd_abi && !h->def_regular) |
15290 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
15291 | if (ent->plt.offset != (bfd_vma) -1) | |
15292 | { | |
15293 | /* Mark the symbol as undefined, rather than as | |
15294 | defined in glink. Leave the value if there were | |
15295 | any relocations where pointer equality matters | |
15296 | (this is a clue for the dynamic linker, to make | |
15297 | function pointer comparisons work between an | |
15298 | application and shared library), otherwise set it | |
15299 | to zero. */ | |
15300 | sym->st_shndx = SHN_UNDEF; | |
15301 | if (!h->pointer_equality_needed) | |
15302 | sym->st_value = 0; | |
15303 | else if (!h->ref_regular_nonweak) | |
15304 | { | |
15305 | /* This breaks function pointer comparisons, but | |
15306 | that is better than breaking tests for a NULL | |
15307 | function pointer. */ | |
15308 | sym->st_value = 0; | |
15309 | } | |
15310 | break; | |
15311 | } | |
5bd4f169 | 15312 | |
f5385ebf | 15313 | if (h->needs_copy) |
5bd4f169 | 15314 | { |
65f38f15 | 15315 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 15316 | Elf_Internal_Rela rela; |
5474d94f | 15317 | asection *srel; |
49c09209 | 15318 | bfd_byte *loc; |
5bd4f169 | 15319 | |
65f38f15 AM |
15320 | if (h->dynindx == -1 |
15321 | || (h->root.type != bfd_link_hash_defined | |
15322 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
15323 | || htab->elf.srelbss == NULL |
15324 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 15325 | abort (); |
5bd4f169 AM |
15326 | |
15327 | rela.r_offset = (h->root.u.def.value | |
15328 | + h->root.u.def.section->output_section->vma | |
15329 | + h->root.u.def.section->output_offset); | |
15330 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
15331 | rela.r_addend = 0; | |
afbf7e8e | 15332 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
15333 | srel = htab->elf.sreldynrelro; |
15334 | else | |
15335 | srel = htab->elf.srelbss; | |
15336 | loc = srel->contents; | |
15337 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 15338 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
15339 | } |
15340 | ||
b34976b6 | 15341 | return TRUE; |
5bd4f169 AM |
15342 | } |
15343 | ||
65f38f15 AM |
15344 | /* Used to decide how to sort relocs in an optimal manner for the |
15345 | dynamic linker, before writing them out. */ | |
15346 | ||
15347 | static enum elf_reloc_type_class | |
7e612e98 AM |
15348 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
15349 | const asection *rel_sec, | |
15350 | const Elf_Internal_Rela *rela) | |
65f38f15 | 15351 | { |
04c9666a | 15352 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
15353 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
15354 | ||
33e44f2e | 15355 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 15356 | return reloc_class_ifunc; |
a33d1f77 | 15357 | |
4ce794b7 | 15358 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 15359 | switch (r_type) |
65f38f15 AM |
15360 | { |
15361 | case R_PPC64_RELATIVE: | |
15362 | return reloc_class_relative; | |
15363 | case R_PPC64_JMP_SLOT: | |
15364 | return reloc_class_plt; | |
15365 | case R_PPC64_COPY: | |
15366 | return reloc_class_copy; | |
15367 | default: | |
15368 | return reloc_class_normal; | |
15369 | } | |
15370 | } | |
15371 | ||
5bd4f169 AM |
15372 | /* Finish up the dynamic sections. */ |
15373 | ||
b34976b6 | 15374 | static bfd_boolean |
4ce794b7 AM |
15375 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
15376 | struct bfd_link_info *info) | |
5bd4f169 | 15377 | { |
65f38f15 AM |
15378 | struct ppc_link_hash_table *htab; |
15379 | bfd *dynobj; | |
5bd4f169 | 15380 | asection *sdyn; |
5bd4f169 | 15381 | |
65f38f15 | 15382 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15383 | if (htab == NULL) |
15384 | return FALSE; | |
15385 | ||
65f38f15 | 15386 | dynobj = htab->elf.dynobj; |
3d4d4302 | 15387 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 15388 | |
65f38f15 | 15389 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 15390 | { |
5bd4f169 AM |
15391 | Elf64_External_Dyn *dyncon, *dynconend; |
15392 | ||
33e44f2e | 15393 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 15394 | abort (); |
5bd4f169 AM |
15395 | |
15396 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 15397 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
15398 | for (; dyncon < dynconend; dyncon++) |
15399 | { | |
15400 | Elf_Internal_Dyn dyn; | |
19397422 | 15401 | asection *s; |
5bd4f169 AM |
15402 | |
15403 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
15404 | ||
15405 | switch (dyn.d_tag) | |
15406 | { | |
65f38f15 AM |
15407 | default: |
15408 | continue; | |
5bd4f169 | 15409 | |
5d1634d7 | 15410 | case DT_PPC64_GLINK: |
4ce794b7 | 15411 | s = htab->glink; |
6348e046 | 15412 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
15413 | /* We stupidly defined DT_PPC64_GLINK to be the start |
15414 | of glink rather than the first entry point, which is | |
15415 | what ld.so needs, and now have a bigger stub to | |
15416 | support automatic multiple TOCs. */ | |
9e390558 | 15417 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
15418 | break; |
15419 | ||
19397422 AM |
15420 | case DT_PPC64_OPD: |
15421 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15422 | if (s == NULL) |
15423 | continue; | |
15424 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
15425 | break; |
15426 | ||
e8910a83 AM |
15427 | case DT_PPC64_OPT: |
15428 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
15429 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
f378ab09 AM |
15430 | if (htab->has_plt_localentry0) |
15431 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
15432 | break; |
15433 | ||
19397422 AM |
15434 | case DT_PPC64_OPDSZ: |
15435 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15436 | if (s == NULL) |
15437 | continue; | |
eea6121a | 15438 | dyn.d_un.d_val = s->size; |
19397422 AM |
15439 | break; |
15440 | ||
65f38f15 | 15441 | case DT_PLTGOT: |
33e44f2e | 15442 | s = htab->elf.splt; |
6348e046 | 15443 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
15444 | break; |
15445 | ||
15446 | case DT_JMPREL: | |
33e44f2e | 15447 | s = htab->elf.srelplt; |
6348e046 | 15448 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 15449 | break; |
5bd4f169 | 15450 | |
65f38f15 | 15451 | case DT_PLTRELSZ: |
33e44f2e | 15452 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 15453 | break; |
82e66161 AM |
15454 | |
15455 | case DT_TEXTREL: | |
15456 | if (htab->local_ifunc_resolver) | |
15457 | info->callbacks->einfo | |
15458 | (_("%X%P: text relocations and GNU indirect " | |
15459 | "functions will result in a segfault at runtime\n")); | |
15460 | else if (htab->maybe_local_ifunc_resolver) | |
15461 | info->callbacks->einfo | |
15462 | (_("%P: warning: text relocations and GNU indirect " | |
15463 | "functions may result in a segfault at runtime\n")); | |
15464 | continue; | |
5bd4f169 | 15465 | } |
5bd4f169 | 15466 | |
65f38f15 | 15467 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 15468 | } |
5bd4f169 AM |
15469 | } |
15470 | ||
6528b6eb AM |
15471 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
15472 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
15473 | { |
15474 | /* Fill in the first entry in the global offset table. | |
15475 | We use it to hold the link-time TOCbase. */ | |
15476 | bfd_put_64 (output_bfd, | |
60ee0d4a | 15477 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 15478 | htab->elf.sgot->contents); |
5d1634d7 AM |
15479 | |
15480 | /* Set .got entry size. */ | |
2cdcc330 AM |
15481 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
15482 | = 8; | |
5d1634d7 AM |
15483 | } |
15484 | ||
6528b6eb AM |
15485 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
15486 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
15487 | { |
15488 | /* Set .plt entry size. */ | |
33e44f2e | 15489 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 15490 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
15491 | } |
15492 | ||
84f5d08e AM |
15493 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
15494 | brlt ourselves if emitrelocations. */ | |
15495 | if (htab->brlt != NULL | |
15496 | && htab->brlt->reloc_count != 0 | |
15497 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15498 | htab->brlt, | |
d4730f92 | 15499 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
15500 | elf_section_data (htab->brlt)->relocs, |
15501 | NULL)) | |
15502 | return FALSE; | |
15503 | ||
176a0d42 AM |
15504 | if (htab->glink != NULL |
15505 | && htab->glink->reloc_count != 0 | |
15506 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15507 | htab->glink, | |
d4730f92 | 15508 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
15509 | elf_section_data (htab->glink)->relocs, |
15510 | NULL)) | |
15511 | return FALSE; | |
15512 | ||
da44f4e5 | 15513 | |
df136d64 AM |
15514 | if (htab->glink_eh_frame != NULL |
15515 | && htab->glink_eh_frame->size != 0 | |
15516 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
15517 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
15518 | htab->glink_eh_frame, | |
15519 | htab->glink_eh_frame->contents)) | |
15520 | return FALSE; | |
58d180e8 | 15521 | |
e717da7e | 15522 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15523 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15524 | bfd. */ | |
c72f2fb2 | 15525 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
15526 | { |
15527 | asection *s; | |
7b53ace3 | 15528 | |
0c8d6e5c | 15529 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15530 | continue; |
15531 | ||
e717da7e AM |
15532 | s = ppc64_elf_tdata (dynobj)->got; |
15533 | if (s != NULL | |
eea6121a | 15534 | && s->size != 0 |
e717da7e AM |
15535 | && s->output_section != bfd_abs_section_ptr |
15536 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15537 | s->contents, s->output_offset, | |
eea6121a | 15538 | s->size)) |
e717da7e AM |
15539 | return FALSE; |
15540 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15541 | if (s != NULL | |
eea6121a | 15542 | && s->size != 0 |
e717da7e AM |
15543 | && s->output_section != bfd_abs_section_ptr |
15544 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15545 | s->contents, s->output_offset, | |
eea6121a | 15546 | s->size)) |
e717da7e AM |
15547 | return FALSE; |
15548 | } | |
f6c52c13 | 15549 | |
b34976b6 | 15550 | return TRUE; |
5bd4f169 AM |
15551 | } |
15552 | ||
5bd4f169 | 15553 | #include "elf64-target.h" |
7b8e7dad AM |
15554 | |
15555 | /* FreeBSD support */ | |
15556 | ||
15557 | #undef TARGET_LITTLE_SYM | |
15558 | #undef TARGET_LITTLE_NAME | |
15559 | ||
15560 | #undef TARGET_BIG_SYM | |
6d00b590 | 15561 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
15562 | #undef TARGET_BIG_NAME |
15563 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15564 | ||
15565 | #undef ELF_OSABI | |
15566 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15567 | ||
15568 | #undef elf64_bed | |
15569 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15570 | ||
15571 | #include "elf64-target.h" |