Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
b90efa5b | 2 | Copyright (C) 1999-2015 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 | |
04c6a44c | 67 | #define ELF_COMMONPAGESIZE 0x10000 |
ad8e1ba5 AM |
68 | #define elf_info_to_howto ppc64_elf_info_to_howto |
69 | ||
70 | #define elf_backend_want_got_sym 0 | |
71 | #define elf_backend_want_plt_sym 0 | |
72 | #define elf_backend_plt_alignment 3 | |
73 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 74 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
75 | #define elf_backend_can_gc_sections 1 |
76 | #define elf_backend_can_refcount 1 | |
77 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 78 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 79 | |
e717da7e | 80 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 81 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 82 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
83 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
84 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
85 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
86 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 87 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 88 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
89 | |
90 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
91 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
92 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 93 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
94 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
95 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 96 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 97 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 98 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 99 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 100 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 101 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 102 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
103 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
104 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
105 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
106 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 107 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
108 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
109 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 110 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 111 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 112 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
113 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
114 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
115 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
116 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 117 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 118 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 119 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
ad8e1ba5 | 120 | |
5bd4f169 AM |
121 | /* The name of the dynamic interpreter. This is put in the .interp |
122 | section. */ | |
123 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
124 | ||
125 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 126 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
5bd4f169 AM |
127 | |
128 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 129 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 130 | |
a078d95a AM |
131 | /* Offsets to some stack save slots. */ |
132 | #define STK_LR 16 | |
133 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 134 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
135 | CR save slot. Used only by optimised __tls_get_addr call stub, |
136 | relying on __tls_get_addr_opt not saving CR.. */ | |
137 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
138 | ||
5bd4f169 | 139 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 140 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
141 | /* TOC base alignment. */ |
142 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
143 | |
144 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
145 | #define TP_OFFSET 0x7000 | |
146 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 147 | |
ad8e1ba5 AM |
148 | /* .plt call stub instructions. The normal stub is like this, but |
149 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 150 | insert an addi to adjust r11. */ |
a078d95a | 151 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
152 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
153 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
154 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
155 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
156 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
157 | #define BCTR 0x4e800420 /* bctr */ |
158 | ||
71a39c98 | 159 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
ad8e1ba5 AM |
160 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
161 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
162 | ||
71a39c98 AM |
163 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
164 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
165 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
794e51c0 AM |
166 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
167 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
168 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
169 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
170 | ||
71a39c98 | 171 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 AM |
172 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
173 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
174 | ||
a078d95a | 175 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
ad8e1ba5 | 176 | |
397998fc | 177 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
a345bc8d AM |
178 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
179 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
180 | ||
ee4bf8d2 | 181 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 182 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
183 | /* 0: */ |
184 | /* .quad plt0-1f */ | |
185 | /* __glink: */ | |
186 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
187 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
188 | /* 1: */ | |
189 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 190 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 191 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
192 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
193 | /* ld %12,0(%11) */ | |
194 | /* ld %2,8(%11) */ | |
195 | /* mtctr %12 */ | |
196 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 197 | /* bctr */ |
b9e5796b AM |
198 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
199 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
200 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
201 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
202 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
203 | |
204 | /* Pad with this. */ | |
205 | #define NOP 0x60000000 | |
206 | ||
721956f4 AM |
207 | /* Some other nops. */ |
208 | #define CROR_151515 0x4def7b82 | |
209 | #define CROR_313131 0x4ffffb82 | |
210 | ||
cedb70c5 | 211 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
212 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
213 | #define B_DOT 0x48000000 /* b . */ | |
214 | ||
215 | /* After that, we need two instructions to load the index, followed by | |
216 | a branch. */ | |
217 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 218 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 219 | |
deb0e272 AM |
220 | /* Instructions used by the save and restore reg functions. */ |
221 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
222 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
223 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
224 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
225 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
226 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
227 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
228 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
229 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
230 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
231 | #define BLR 0x4e800020 /* blr */ |
232 | ||
41bd81ab AM |
233 | /* Since .opd is an array of descriptors and each entry will end up |
234 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
235 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 236 | relocate .opd without reloc entries. */ |
41bd81ab AM |
237 | #ifndef NO_OPD_RELOCS |
238 | #define NO_OPD_RELOCS 0 | |
239 | #endif | |
810d4e75 | 240 | |
a4b6fadd AM |
241 | #ifndef ARRAY_SIZE |
242 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
243 | #endif | |
244 | ||
810d4e75 AM |
245 | static inline int |
246 | abiversion (bfd *abfd) | |
247 | { | |
248 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
249 | } | |
250 | ||
251 | static inline void | |
252 | set_abiversion (bfd *abfd, int ver) | |
253 | { | |
254 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
255 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
256 | } | |
5bd4f169 | 257 | \f |
f5e87a1d | 258 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 259 | |
5bd4f169 | 260 | /* Relocation HOWTO's. */ |
04c9666a | 261 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
262 | |
263 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
264 | /* This reloc does nothing. */ | |
265 | HOWTO (R_PPC64_NONE, /* type */ | |
266 | 0, /* rightshift */ | |
6346d5ca AM |
267 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
268 | 0, /* bitsize */ | |
b34976b6 | 269 | FALSE, /* pc_relative */ |
5bd4f169 | 270 | 0, /* bitpos */ |
f5e87a1d | 271 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
272 | bfd_elf_generic_reloc, /* special_function */ |
273 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 274 | FALSE, /* partial_inplace */ |
d006db6c | 275 | 0, /* src_mask */ |
5bd4f169 | 276 | 0, /* dst_mask */ |
b34976b6 | 277 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
278 | |
279 | /* A standard 32 bit relocation. */ | |
280 | HOWTO (R_PPC64_ADDR32, /* type */ | |
281 | 0, /* rightshift */ | |
282 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
283 | 32, /* bitsize */ | |
b34976b6 | 284 | FALSE, /* pc_relative */ |
5bd4f169 AM |
285 | 0, /* bitpos */ |
286 | complain_overflow_bitfield, /* complain_on_overflow */ | |
287 | bfd_elf_generic_reloc, /* special_function */ | |
288 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 289 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
290 | 0, /* src_mask */ |
291 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 292 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
293 | |
294 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
295 | FIXME: we don't check that, we just clear them. */ | |
296 | HOWTO (R_PPC64_ADDR24, /* type */ | |
297 | 0, /* rightshift */ | |
298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
299 | 26, /* bitsize */ | |
b34976b6 | 300 | FALSE, /* pc_relative */ |
5bd4f169 AM |
301 | 0, /* bitpos */ |
302 | complain_overflow_bitfield, /* complain_on_overflow */ | |
303 | bfd_elf_generic_reloc, /* special_function */ | |
304 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 305 | FALSE, /* partial_inplace */ |
d006db6c | 306 | 0, /* src_mask */ |
f5e87a1d | 307 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 308 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
309 | |
310 | /* A standard 16 bit relocation. */ | |
311 | HOWTO (R_PPC64_ADDR16, /* type */ | |
312 | 0, /* rightshift */ | |
313 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
314 | 16, /* bitsize */ | |
b34976b6 | 315 | FALSE, /* pc_relative */ |
5bd4f169 AM |
316 | 0, /* bitpos */ |
317 | complain_overflow_bitfield, /* complain_on_overflow */ | |
318 | bfd_elf_generic_reloc, /* special_function */ | |
319 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 320 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
321 | 0, /* src_mask */ |
322 | 0xffff, /* dst_mask */ | |
b34976b6 | 323 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
324 | |
325 | /* A 16 bit relocation without overflow. */ | |
326 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
327 | 0, /* rightshift */ | |
328 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
329 | 16, /* bitsize */ | |
b34976b6 | 330 | FALSE, /* pc_relative */ |
5bd4f169 AM |
331 | 0, /* bitpos */ |
332 | complain_overflow_dont,/* complain_on_overflow */ | |
333 | bfd_elf_generic_reloc, /* special_function */ | |
334 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 335 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
336 | 0, /* src_mask */ |
337 | 0xffff, /* dst_mask */ | |
b34976b6 | 338 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
339 | |
340 | /* Bits 16-31 of an address. */ | |
341 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
342 | 16, /* rightshift */ | |
343 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
344 | 16, /* bitsize */ | |
b34976b6 | 345 | FALSE, /* pc_relative */ |
5bd4f169 | 346 | 0, /* bitpos */ |
f9c6b907 | 347 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
348 | bfd_elf_generic_reloc, /* special_function */ |
349 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 350 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
351 | 0, /* src_mask */ |
352 | 0xffff, /* dst_mask */ | |
b34976b6 | 353 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
354 | |
355 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
356 | bits, treated as a signed number, is negative. */ | |
357 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
358 | 16, /* rightshift */ | |
359 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
360 | 16, /* bitsize */ | |
b34976b6 | 361 | FALSE, /* pc_relative */ |
5bd4f169 | 362 | 0, /* bitpos */ |
f9c6b907 | 363 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 364 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 365 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 366 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
367 | 0, /* src_mask */ |
368 | 0xffff, /* dst_mask */ | |
b34976b6 | 369 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
370 | |
371 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
372 | FIXME: we don't check that, we just clear them. */ | |
373 | HOWTO (R_PPC64_ADDR14, /* type */ | |
374 | 0, /* rightshift */ | |
375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
376 | 16, /* bitsize */ | |
b34976b6 | 377 | FALSE, /* pc_relative */ |
5bd4f169 | 378 | 0, /* bitpos */ |
b80eed39 | 379 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 380 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 381 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 382 | FALSE, /* partial_inplace */ |
d006db6c | 383 | 0, /* src_mask */ |
f5e87a1d | 384 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 385 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
386 | |
387 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
388 | indicate that the branch is expected to be taken. The lower two | |
389 | bits must be zero. */ | |
390 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
391 | 0, /* rightshift */ | |
392 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
393 | 16, /* bitsize */ | |
b34976b6 | 394 | FALSE, /* pc_relative */ |
5bd4f169 | 395 | 0, /* bitpos */ |
b80eed39 | 396 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 397 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 398 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 399 | FALSE, /* partial_inplace */ |
d006db6c | 400 | 0, /* src_mask */ |
f5e87a1d | 401 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 402 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
403 | |
404 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
405 | indicate that the branch is not expected to be taken. The lower | |
406 | two bits must be zero. */ | |
407 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
408 | 0, /* rightshift */ | |
409 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
410 | 16, /* bitsize */ | |
b34976b6 | 411 | FALSE, /* pc_relative */ |
5bd4f169 | 412 | 0, /* bitpos */ |
b80eed39 | 413 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 414 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 415 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 416 | FALSE, /* partial_inplace */ |
d006db6c | 417 | 0, /* src_mask */ |
f5e87a1d | 418 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 419 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
420 | |
421 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
422 | HOWTO (R_PPC64_REL24, /* type */ | |
423 | 0, /* rightshift */ | |
424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
425 | 26, /* bitsize */ | |
b34976b6 | 426 | TRUE, /* pc_relative */ |
5bd4f169 AM |
427 | 0, /* bitpos */ |
428 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 429 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 430 | "R_PPC64_REL24", /* name */ |
b34976b6 | 431 | FALSE, /* partial_inplace */ |
d006db6c | 432 | 0, /* src_mask */ |
f5e87a1d | 433 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 434 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
435 | |
436 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
437 | HOWTO (R_PPC64_REL14, /* type */ | |
438 | 0, /* rightshift */ | |
439 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
440 | 16, /* bitsize */ | |
b34976b6 | 441 | TRUE, /* pc_relative */ |
5bd4f169 AM |
442 | 0, /* bitpos */ |
443 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 444 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 445 | "R_PPC64_REL14", /* name */ |
b34976b6 | 446 | FALSE, /* partial_inplace */ |
d006db6c | 447 | 0, /* src_mask */ |
f5e87a1d | 448 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 449 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
450 | |
451 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
452 | the branch is expected to be taken. The lower two bits must be | |
453 | zero. */ | |
454 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
455 | 0, /* rightshift */ | |
456 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
457 | 16, /* bitsize */ | |
b34976b6 | 458 | TRUE, /* pc_relative */ |
5bd4f169 AM |
459 | 0, /* bitpos */ |
460 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 461 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 462 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 463 | FALSE, /* partial_inplace */ |
d006db6c | 464 | 0, /* src_mask */ |
f5e87a1d | 465 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 466 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
467 | |
468 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
469 | the branch is not expected to be taken. The lower two bits must | |
470 | be zero. */ | |
471 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
472 | 0, /* rightshift */ | |
473 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
474 | 16, /* bitsize */ | |
b34976b6 | 475 | TRUE, /* pc_relative */ |
5bd4f169 AM |
476 | 0, /* bitpos */ |
477 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 478 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 479 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 480 | FALSE, /* partial_inplace */ |
d006db6c | 481 | 0, /* src_mask */ |
f5e87a1d | 482 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 483 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
484 | |
485 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
486 | symbol. */ | |
487 | HOWTO (R_PPC64_GOT16, /* type */ | |
488 | 0, /* rightshift */ | |
489 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
490 | 16, /* bitsize */ | |
b34976b6 | 491 | FALSE, /* pc_relative */ |
5bd4f169 AM |
492 | 0, /* bitpos */ |
493 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 494 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 495 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 496 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
497 | 0, /* src_mask */ |
498 | 0xffff, /* dst_mask */ | |
b34976b6 | 499 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
500 | |
501 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
502 | the symbol. */ | |
503 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
504 | 0, /* rightshift */ | |
505 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
506 | 16, /* bitsize */ | |
b34976b6 | 507 | FALSE, /* pc_relative */ |
5bd4f169 AM |
508 | 0, /* bitpos */ |
509 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 510 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 511 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 512 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
513 | 0, /* src_mask */ |
514 | 0xffff, /* dst_mask */ | |
b34976b6 | 515 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
516 | |
517 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
518 | the symbol. */ | |
519 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
520 | 16, /* rightshift */ | |
521 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
522 | 16, /* bitsize */ | |
b34976b6 | 523 | FALSE, /* pc_relative */ |
5bd4f169 | 524 | 0, /* bitpos */ |
f9c6b907 | 525 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 526 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 527 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 528 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
529 | 0, /* src_mask */ |
530 | 0xffff, /* dst_mask */ | |
b34976b6 | 531 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
532 | |
533 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
534 | the symbol. */ | |
535 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
536 | 16, /* rightshift */ | |
537 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
538 | 16, /* bitsize */ | |
b34976b6 | 539 | FALSE, /* pc_relative */ |
5bd4f169 | 540 | 0, /* bitpos */ |
f9c6b907 | 541 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 542 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 543 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 544 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
545 | 0, /* src_mask */ |
546 | 0xffff, /* dst_mask */ | |
b34976b6 | 547 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
548 | |
549 | /* This is used only by the dynamic linker. The symbol should exist | |
550 | both in the object being run and in some shared library. The | |
551 | dynamic linker copies the data addressed by the symbol from the | |
552 | shared library into the object, because the object being | |
553 | run has to have the data at some particular address. */ | |
554 | HOWTO (R_PPC64_COPY, /* type */ | |
555 | 0, /* rightshift */ | |
f5e87a1d AM |
556 | 0, /* this one is variable size */ |
557 | 0, /* bitsize */ | |
b34976b6 | 558 | FALSE, /* pc_relative */ |
5bd4f169 | 559 | 0, /* bitpos */ |
f5e87a1d AM |
560 | complain_overflow_dont, /* complain_on_overflow */ |
561 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 562 | "R_PPC64_COPY", /* name */ |
b34976b6 | 563 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
564 | 0, /* src_mask */ |
565 | 0, /* dst_mask */ | |
b34976b6 | 566 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
567 | |
568 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
569 | entries. */ | |
570 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
571 | 0, /* rightshift */ | |
572 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
573 | 64, /* bitsize */ | |
b34976b6 | 574 | FALSE, /* pc_relative */ |
5bd4f169 AM |
575 | 0, /* bitpos */ |
576 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 577 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 578 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 579 | FALSE, /* partial_inplace */ |
5bd4f169 | 580 | 0, /* src_mask */ |
f5e87a1d | 581 | ONES (64), /* dst_mask */ |
b34976b6 | 582 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
583 | |
584 | /* Created by the link editor. Marks a procedure linkage table | |
585 | entry for a symbol. */ | |
586 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
587 | 0, /* rightshift */ | |
588 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
589 | 0, /* bitsize */ | |
b34976b6 | 590 | FALSE, /* pc_relative */ |
5bd4f169 AM |
591 | 0, /* bitpos */ |
592 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 593 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 594 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 595 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
596 | 0, /* src_mask */ |
597 | 0, /* dst_mask */ | |
b34976b6 | 598 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
599 | |
600 | /* Used only by the dynamic linker. When the object is run, this | |
601 | doubleword64 is set to the load address of the object, plus the | |
602 | addend. */ | |
603 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
604 | 0, /* rightshift */ | |
605 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
606 | 64, /* bitsize */ | |
b34976b6 | 607 | FALSE, /* pc_relative */ |
5bd4f169 AM |
608 | 0, /* bitpos */ |
609 | complain_overflow_dont, /* complain_on_overflow */ | |
610 | bfd_elf_generic_reloc, /* special_function */ | |
611 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 612 | FALSE, /* partial_inplace */ |
5bd4f169 | 613 | 0, /* src_mask */ |
f5e87a1d | 614 | ONES (64), /* dst_mask */ |
b34976b6 | 615 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
616 | |
617 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
618 | HOWTO (R_PPC64_UADDR32, /* type */ | |
619 | 0, /* rightshift */ | |
620 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
621 | 32, /* bitsize */ | |
b34976b6 | 622 | FALSE, /* pc_relative */ |
5bd4f169 AM |
623 | 0, /* bitpos */ |
624 | complain_overflow_bitfield, /* complain_on_overflow */ | |
625 | bfd_elf_generic_reloc, /* special_function */ | |
626 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 627 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
628 | 0, /* src_mask */ |
629 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 630 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
631 | |
632 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
633 | HOWTO (R_PPC64_UADDR16, /* type */ | |
634 | 0, /* rightshift */ | |
635 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
636 | 16, /* bitsize */ | |
b34976b6 | 637 | FALSE, /* pc_relative */ |
5bd4f169 AM |
638 | 0, /* bitpos */ |
639 | complain_overflow_bitfield, /* complain_on_overflow */ | |
640 | bfd_elf_generic_reloc, /* special_function */ | |
641 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 642 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
643 | 0, /* src_mask */ |
644 | 0xffff, /* dst_mask */ | |
b34976b6 | 645 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
646 | |
647 | /* 32-bit PC relative. */ | |
648 | HOWTO (R_PPC64_REL32, /* type */ | |
649 | 0, /* rightshift */ | |
650 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
651 | 32, /* bitsize */ | |
b34976b6 | 652 | TRUE, /* pc_relative */ |
5bd4f169 | 653 | 0, /* bitpos */ |
5bd4f169 AM |
654 | complain_overflow_signed, /* complain_on_overflow */ |
655 | bfd_elf_generic_reloc, /* special_function */ | |
656 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 657 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
658 | 0, /* src_mask */ |
659 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 660 | TRUE), /* pcrel_offset */ |
5bd4f169 | 661 | |
10ed1bba | 662 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
663 | HOWTO (R_PPC64_PLT32, /* type */ |
664 | 0, /* rightshift */ | |
665 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
666 | 32, /* bitsize */ | |
b34976b6 | 667 | FALSE, /* pc_relative */ |
5bd4f169 AM |
668 | 0, /* bitpos */ |
669 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 670 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 671 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 672 | FALSE, /* partial_inplace */ |
5bd4f169 | 673 | 0, /* src_mask */ |
f5e87a1d | 674 | 0xffffffff, /* dst_mask */ |
b34976b6 | 675 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
676 | |
677 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
678 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
679 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
680 | 0, /* rightshift */ | |
681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
682 | 32, /* bitsize */ | |
b34976b6 | 683 | TRUE, /* pc_relative */ |
5bd4f169 AM |
684 | 0, /* bitpos */ |
685 | complain_overflow_signed, /* complain_on_overflow */ | |
686 | bfd_elf_generic_reloc, /* special_function */ | |
687 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 688 | FALSE, /* partial_inplace */ |
5bd4f169 | 689 | 0, /* src_mask */ |
f5e87a1d | 690 | 0xffffffff, /* dst_mask */ |
b34976b6 | 691 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
692 | |
693 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
694 | the symbol. */ | |
695 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
696 | 0, /* rightshift */ | |
697 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
698 | 16, /* bitsize */ | |
b34976b6 | 699 | FALSE, /* pc_relative */ |
5bd4f169 AM |
700 | 0, /* bitpos */ |
701 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 702 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 703 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 704 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
705 | 0, /* src_mask */ |
706 | 0xffff, /* dst_mask */ | |
b34976b6 | 707 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
708 | |
709 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
710 | the symbol. */ | |
711 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
712 | 16, /* rightshift */ | |
713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
714 | 16, /* bitsize */ | |
b34976b6 | 715 | FALSE, /* pc_relative */ |
5bd4f169 | 716 | 0, /* bitpos */ |
f9c6b907 | 717 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 718 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 719 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 720 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
721 | 0, /* src_mask */ |
722 | 0xffff, /* dst_mask */ | |
b34976b6 | 723 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
724 | |
725 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
726 | the symbol. */ | |
727 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
728 | 16, /* rightshift */ | |
729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 16, /* bitsize */ | |
b34976b6 | 731 | FALSE, /* pc_relative */ |
5bd4f169 | 732 | 0, /* bitpos */ |
f9c6b907 | 733 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 734 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 735 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 736 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
737 | 0, /* src_mask */ |
738 | 0xffff, /* dst_mask */ | |
b34976b6 | 739 | FALSE), /* pcrel_offset */ |
5bd4f169 | 740 | |
c061c2d8 | 741 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
742 | HOWTO (R_PPC64_SECTOFF, /* type */ |
743 | 0, /* rightshift */ | |
c061c2d8 AM |
744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
745 | 16, /* bitsize */ | |
b34976b6 | 746 | FALSE, /* pc_relative */ |
5bd4f169 | 747 | 0, /* bitpos */ |
b80eed39 | 748 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 749 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 750 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 751 | FALSE, /* partial_inplace */ |
5bd4f169 | 752 | 0, /* src_mask */ |
c061c2d8 | 753 | 0xffff, /* dst_mask */ |
b34976b6 | 754 | FALSE), /* pcrel_offset */ |
5bd4f169 | 755 | |
c061c2d8 | 756 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
757 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
758 | 0, /* rightshift */ | |
759 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
760 | 16, /* bitsize */ | |
b34976b6 | 761 | FALSE, /* pc_relative */ |
5bd4f169 AM |
762 | 0, /* bitpos */ |
763 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 764 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 765 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 766 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
767 | 0, /* src_mask */ |
768 | 0xffff, /* dst_mask */ | |
b34976b6 | 769 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
770 | |
771 | /* 16-bit upper half section relative relocation. */ | |
772 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
773 | 16, /* rightshift */ | |
774 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
775 | 16, /* bitsize */ | |
b34976b6 | 776 | FALSE, /* pc_relative */ |
5bd4f169 | 777 | 0, /* bitpos */ |
f9c6b907 | 778 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 779 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 780 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 781 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
782 | 0, /* src_mask */ |
783 | 0xffff, /* dst_mask */ | |
b34976b6 | 784 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
785 | |
786 | /* 16-bit upper half adjusted section relative relocation. */ | |
787 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
788 | 16, /* rightshift */ | |
789 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
790 | 16, /* bitsize */ | |
b34976b6 | 791 | FALSE, /* pc_relative */ |
5bd4f169 | 792 | 0, /* bitpos */ |
f9c6b907 | 793 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 794 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 795 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 796 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
797 | 0, /* src_mask */ |
798 | 0xffff, /* dst_mask */ | |
b34976b6 | 799 | FALSE), /* pcrel_offset */ |
5bd4f169 | 800 | |
04c9666a AM |
801 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
802 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
803 | 2, /* rightshift */ |
804 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
805 | 30, /* bitsize */ | |
b34976b6 | 806 | TRUE, /* pc_relative */ |
5bd4f169 AM |
807 | 0, /* bitpos */ |
808 | complain_overflow_dont, /* complain_on_overflow */ | |
809 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 810 | "R_PPC64_REL30", /* name */ |
b34976b6 | 811 | FALSE, /* partial_inplace */ |
d006db6c | 812 | 0, /* src_mask */ |
5bd4f169 | 813 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 814 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
815 | |
816 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
817 | ||
818 | /* A standard 64-bit relocation. */ | |
819 | HOWTO (R_PPC64_ADDR64, /* type */ | |
820 | 0, /* rightshift */ | |
821 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
822 | 64, /* bitsize */ | |
b34976b6 | 823 | FALSE, /* pc_relative */ |
5bd4f169 AM |
824 | 0, /* bitpos */ |
825 | complain_overflow_dont, /* complain_on_overflow */ | |
826 | bfd_elf_generic_reloc, /* special_function */ | |
827 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 828 | FALSE, /* partial_inplace */ |
5bd4f169 | 829 | 0, /* src_mask */ |
f5e87a1d | 830 | ONES (64), /* dst_mask */ |
b34976b6 | 831 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
832 | |
833 | /* The bits 32-47 of an address. */ | |
834 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
835 | 32, /* rightshift */ | |
836 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
837 | 16, /* bitsize */ | |
b34976b6 | 838 | FALSE, /* pc_relative */ |
5bd4f169 AM |
839 | 0, /* bitpos */ |
840 | complain_overflow_dont, /* complain_on_overflow */ | |
841 | bfd_elf_generic_reloc, /* special_function */ | |
842 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 843 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
844 | 0, /* src_mask */ |
845 | 0xffff, /* dst_mask */ | |
b34976b6 | 846 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
847 | |
848 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
849 | 16 bits, treated as a signed number, is negative. */ | |
850 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
851 | 32, /* rightshift */ | |
852 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
853 | 16, /* bitsize */ | |
b34976b6 | 854 | FALSE, /* pc_relative */ |
5bd4f169 AM |
855 | 0, /* bitpos */ |
856 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 857 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 858 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 859 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
860 | 0, /* src_mask */ |
861 | 0xffff, /* dst_mask */ | |
b34976b6 | 862 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
863 | |
864 | /* The bits 48-63 of an address. */ | |
865 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
866 | 48, /* rightshift */ | |
867 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
868 | 16, /* bitsize */ | |
b34976b6 | 869 | FALSE, /* pc_relative */ |
5bd4f169 AM |
870 | 0, /* bitpos */ |
871 | complain_overflow_dont, /* complain_on_overflow */ | |
872 | bfd_elf_generic_reloc, /* special_function */ | |
873 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 874 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
875 | 0, /* src_mask */ |
876 | 0xffff, /* dst_mask */ | |
b34976b6 | 877 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
878 | |
879 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
880 | 16 bits, treated as a signed number, is negative. */ | |
881 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
882 | 48, /* rightshift */ | |
883 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
884 | 16, /* bitsize */ | |
b34976b6 | 885 | FALSE, /* pc_relative */ |
5bd4f169 AM |
886 | 0, /* bitpos */ |
887 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 888 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 889 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 890 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
891 | 0, /* src_mask */ |
892 | 0xffff, /* dst_mask */ | |
b34976b6 | 893 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
894 | |
895 | /* Like ADDR64, but may be unaligned. */ | |
896 | HOWTO (R_PPC64_UADDR64, /* type */ | |
897 | 0, /* rightshift */ | |
898 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
899 | 64, /* bitsize */ | |
b34976b6 | 900 | FALSE, /* pc_relative */ |
5bd4f169 AM |
901 | 0, /* bitpos */ |
902 | complain_overflow_dont, /* complain_on_overflow */ | |
903 | bfd_elf_generic_reloc, /* special_function */ | |
904 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 905 | FALSE, /* partial_inplace */ |
5bd4f169 | 906 | 0, /* src_mask */ |
f5e87a1d | 907 | ONES (64), /* dst_mask */ |
b34976b6 | 908 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
909 | |
910 | /* 64-bit relative relocation. */ | |
911 | HOWTO (R_PPC64_REL64, /* type */ | |
912 | 0, /* rightshift */ | |
913 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
914 | 64, /* bitsize */ | |
b34976b6 | 915 | TRUE, /* pc_relative */ |
5bd4f169 AM |
916 | 0, /* bitpos */ |
917 | complain_overflow_dont, /* complain_on_overflow */ | |
918 | bfd_elf_generic_reloc, /* special_function */ | |
919 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 920 | FALSE, /* partial_inplace */ |
5bd4f169 | 921 | 0, /* src_mask */ |
f5e87a1d | 922 | ONES (64), /* dst_mask */ |
b34976b6 | 923 | TRUE), /* pcrel_offset */ |
5bd4f169 | 924 | |
cedb70c5 | 925 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
926 | HOWTO (R_PPC64_PLT64, /* type */ |
927 | 0, /* rightshift */ | |
928 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
929 | 64, /* bitsize */ | |
b34976b6 | 930 | FALSE, /* pc_relative */ |
5bd4f169 AM |
931 | 0, /* bitpos */ |
932 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 933 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 934 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 935 | FALSE, /* partial_inplace */ |
5bd4f169 | 936 | 0, /* src_mask */ |
f5e87a1d | 937 | ONES (64), /* dst_mask */ |
b34976b6 | 938 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
939 | |
940 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
941 | table. */ | |
942 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
943 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
944 | 0, /* rightshift */ | |
945 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
946 | 64, /* bitsize */ | |
b34976b6 | 947 | TRUE, /* pc_relative */ |
5bd4f169 AM |
948 | 0, /* bitpos */ |
949 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 950 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 951 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 952 | FALSE, /* partial_inplace */ |
5bd4f169 | 953 | 0, /* src_mask */ |
f5e87a1d | 954 | ONES (64), /* dst_mask */ |
b34976b6 | 955 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
956 | |
957 | /* 16 bit TOC-relative relocation. */ | |
958 | ||
959 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
960 | HOWTO (R_PPC64_TOC16, /* type */ | |
961 | 0, /* rightshift */ | |
962 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
963 | 16, /* bitsize */ | |
b34976b6 | 964 | FALSE, /* pc_relative */ |
5bd4f169 AM |
965 | 0, /* bitpos */ |
966 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 967 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 968 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 969 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
970 | 0, /* src_mask */ |
971 | 0xffff, /* dst_mask */ | |
b34976b6 | 972 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
973 | |
974 | /* 16 bit TOC-relative relocation without overflow. */ | |
975 | ||
976 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
977 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
978 | 0, /* rightshift */ | |
979 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
980 | 16, /* bitsize */ | |
b34976b6 | 981 | FALSE, /* pc_relative */ |
5bd4f169 AM |
982 | 0, /* bitpos */ |
983 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 984 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 985 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 986 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
987 | 0, /* src_mask */ |
988 | 0xffff, /* dst_mask */ | |
b34976b6 | 989 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
990 | |
991 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
992 | ||
993 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
994 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
995 | 16, /* rightshift */ | |
996 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
997 | 16, /* bitsize */ | |
b34976b6 | 998 | FALSE, /* pc_relative */ |
5bd4f169 | 999 | 0, /* bitpos */ |
f9c6b907 | 1000 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1001 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1002 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 1003 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1004 | 0, /* src_mask */ |
1005 | 0xffff, /* dst_mask */ | |
b34976b6 | 1006 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1007 | |
1008 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1009 | contents of the low 16 bits, treated as a signed number, is | |
1010 | negative. */ | |
1011 | ||
1012 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1013 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1014 | 16, /* rightshift */ | |
1015 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1016 | 16, /* bitsize */ | |
b34976b6 | 1017 | FALSE, /* pc_relative */ |
5bd4f169 | 1018 | 0, /* bitpos */ |
f9c6b907 | 1019 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1020 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1021 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1022 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1023 | 0, /* src_mask */ |
1024 | 0xffff, /* dst_mask */ | |
b34976b6 | 1025 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1026 | |
1027 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1028 | ||
1029 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1030 | HOWTO (R_PPC64_TOC, /* type */ | |
1031 | 0, /* rightshift */ | |
1032 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1033 | 64, /* bitsize */ | |
b34976b6 | 1034 | FALSE, /* pc_relative */ |
5bd4f169 | 1035 | 0, /* bitpos */ |
b80eed39 | 1036 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1037 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1038 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1039 | FALSE, /* partial_inplace */ |
5bd4f169 | 1040 | 0, /* src_mask */ |
f5e87a1d | 1041 | ONES (64), /* dst_mask */ |
b34976b6 | 1042 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1043 | |
1044 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1045 | value to relocate may (!) refer to a PLT entry which the link | |
1046 | editor (a) may replace with the symbol value. If the link editor | |
1047 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1048 | entry and store the address to the new PLT entry in the GOT. | |
1049 | This permits lazy resolution of function symbols at run time. | |
1050 | The link editor may also skip all of this and just (c) emit a | |
1051 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1052 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1053 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1054 | 0, /* rightshift */ | |
1055 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1056 | 16, /* bitsize */ | |
b34976b6 | 1057 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1058 | 0, /* bitpos */ |
1059 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1060 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1061 | "R_PPC64_PLTGOT16", /* name */ |
1062 | FALSE, /* partial_inplace */ | |
1063 | 0, /* src_mask */ | |
1064 | 0xffff, /* dst_mask */ | |
1065 | FALSE), /* pcrel_offset */ | |
1066 | ||
1067 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1068 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1069 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1070 | 0, /* rightshift */ | |
1071 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1072 | 16, /* bitsize */ | |
1073 | FALSE, /* pc_relative */ | |
1074 | 0, /* bitpos */ | |
1075 | complain_overflow_dont, /* complain_on_overflow */ | |
1076 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1077 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1078 | FALSE, /* partial_inplace */ | |
1079 | 0, /* src_mask */ | |
1080 | 0xffff, /* dst_mask */ | |
1081 | FALSE), /* pcrel_offset */ | |
1082 | ||
1083 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1084 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1085 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1086 | 16, /* rightshift */ | |
1087 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1088 | 16, /* bitsize */ | |
1089 | FALSE, /* pc_relative */ | |
1090 | 0, /* bitpos */ | |
f9c6b907 | 1091 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1092 | ppc64_elf_unhandled_reloc, /* special_function */ |
1093 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1094 | FALSE, /* partial_inplace */ | |
1095 | 0, /* src_mask */ | |
1096 | 0xffff, /* dst_mask */ | |
1097 | FALSE), /* pcrel_offset */ | |
1098 | ||
1099 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1100 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1101 | is negative. */ | |
1102 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1103 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1104 | 16, /* rightshift */ | |
1105 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 16, /* bitsize */ | |
1107 | FALSE, /* pc_relative */ | |
1108 | 0, /* bitpos */ | |
f9c6b907 | 1109 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1110 | ppc64_elf_unhandled_reloc, /* special_function */ |
1111 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0, /* src_mask */ | |
1114 | 0xffff, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
1116 | ||
1117 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1118 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1119 | 0, /* rightshift */ | |
1120 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 16, /* bitsize */ | |
1122 | FALSE, /* pc_relative */ | |
1123 | 0, /* bitpos */ | |
b80eed39 | 1124 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1125 | bfd_elf_generic_reloc, /* special_function */ |
1126 | "R_PPC64_ADDR16_DS", /* name */ | |
1127 | FALSE, /* partial_inplace */ | |
1128 | 0, /* src_mask */ | |
1129 | 0xfffc, /* dst_mask */ | |
1130 | FALSE), /* pcrel_offset */ | |
1131 | ||
1132 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1133 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1134 | 0, /* rightshift */ | |
1135 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 16, /* bitsize */ | |
1137 | FALSE, /* pc_relative */ | |
1138 | 0, /* bitpos */ | |
1139 | complain_overflow_dont,/* complain_on_overflow */ | |
1140 | bfd_elf_generic_reloc, /* special_function */ | |
1141 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0, /* src_mask */ | |
1144 | 0xfffc, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
1146 | ||
1147 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1148 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1149 | 0, /* rightshift */ | |
1150 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1151 | 16, /* bitsize */ | |
1152 | FALSE, /* pc_relative */ | |
1153 | 0, /* bitpos */ | |
1154 | complain_overflow_signed, /* complain_on_overflow */ | |
1155 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1156 | "R_PPC64_GOT16_DS", /* name */ | |
1157 | FALSE, /* partial_inplace */ | |
1158 | 0, /* src_mask */ | |
1159 | 0xfffc, /* dst_mask */ | |
1160 | FALSE), /* pcrel_offset */ | |
1161 | ||
1162 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1163 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1164 | 0, /* rightshift */ | |
1165 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1166 | 16, /* bitsize */ | |
1167 | FALSE, /* pc_relative */ | |
1168 | 0, /* bitpos */ | |
1169 | complain_overflow_dont, /* complain_on_overflow */ | |
1170 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1171 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1172 | FALSE, /* partial_inplace */ | |
1173 | 0, /* src_mask */ | |
1174 | 0xfffc, /* dst_mask */ | |
1175 | FALSE), /* pcrel_offset */ | |
1176 | ||
1177 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1178 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1179 | 0, /* rightshift */ | |
1180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1181 | 16, /* bitsize */ | |
1182 | FALSE, /* pc_relative */ | |
1183 | 0, /* bitpos */ | |
1184 | complain_overflow_dont, /* complain_on_overflow */ | |
1185 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1186 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1187 | FALSE, /* partial_inplace */ | |
1188 | 0, /* src_mask */ | |
1189 | 0xfffc, /* dst_mask */ | |
1190 | FALSE), /* pcrel_offset */ | |
1191 | ||
1192 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1193 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1194 | 0, /* rightshift */ | |
1195 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1196 | 16, /* bitsize */ | |
1197 | FALSE, /* pc_relative */ | |
1198 | 0, /* bitpos */ | |
b80eed39 | 1199 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1200 | ppc64_elf_sectoff_reloc, /* special_function */ |
1201 | "R_PPC64_SECTOFF_DS", /* name */ | |
1202 | FALSE, /* partial_inplace */ | |
1203 | 0, /* src_mask */ | |
1204 | 0xfffc, /* dst_mask */ | |
1205 | FALSE), /* pcrel_offset */ | |
1206 | ||
1207 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1208 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1209 | 0, /* rightshift */ | |
1210 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1211 | 16, /* bitsize */ | |
1212 | FALSE, /* pc_relative */ | |
1213 | 0, /* bitpos */ | |
1214 | complain_overflow_dont, /* complain_on_overflow */ | |
1215 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1216 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1217 | FALSE, /* partial_inplace */ | |
1218 | 0, /* src_mask */ | |
1219 | 0xfffc, /* dst_mask */ | |
1220 | FALSE), /* pcrel_offset */ | |
1221 | ||
1222 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1223 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1224 | 0, /* rightshift */ | |
1225 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1226 | 16, /* bitsize */ | |
1227 | FALSE, /* pc_relative */ | |
1228 | 0, /* bitpos */ | |
1229 | complain_overflow_signed, /* complain_on_overflow */ | |
1230 | ppc64_elf_toc_reloc, /* special_function */ | |
1231 | "R_PPC64_TOC16_DS", /* name */ | |
1232 | FALSE, /* partial_inplace */ | |
1233 | 0, /* src_mask */ | |
1234 | 0xfffc, /* dst_mask */ | |
1235 | FALSE), /* pcrel_offset */ | |
1236 | ||
1237 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1238 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1239 | 0, /* rightshift */ | |
1240 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1241 | 16, /* bitsize */ | |
1242 | FALSE, /* pc_relative */ | |
1243 | 0, /* bitpos */ | |
1244 | complain_overflow_dont, /* complain_on_overflow */ | |
1245 | ppc64_elf_toc_reloc, /* special_function */ | |
1246 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1247 | FALSE, /* partial_inplace */ | |
1248 | 0, /* src_mask */ | |
1249 | 0xfffc, /* dst_mask */ | |
1250 | FALSE), /* pcrel_offset */ | |
1251 | ||
1252 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1253 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1254 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1255 | 0, /* rightshift */ |
1256 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1257 | 16, /* bitsize */ | |
1258 | FALSE, /* pc_relative */ | |
1259 | 0, /* bitpos */ | |
1260 | complain_overflow_signed, /* complain_on_overflow */ | |
1261 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1262 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1263 | FALSE, /* partial_inplace */ | |
1264 | 0, /* src_mask */ | |
1265 | 0xfffc, /* dst_mask */ | |
1266 | FALSE), /* pcrel_offset */ | |
1267 | ||
1268 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1269 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1270 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1271 | 0, /* rightshift */ | |
1272 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1273 | 16, /* bitsize */ | |
1274 | FALSE, /* pc_relative */ | |
1275 | 0, /* bitpos */ | |
1276 | complain_overflow_dont, /* complain_on_overflow */ | |
1277 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1278 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1279 | FALSE, /* partial_inplace */ | |
1280 | 0, /* src_mask */ | |
1281 | 0xfffc, /* dst_mask */ | |
1282 | FALSE), /* pcrel_offset */ | |
1283 | ||
727fc41e | 1284 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1285 | HOWTO (R_PPC64_TLS, |
1286 | 0, /* rightshift */ | |
1287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1288 | 32, /* bitsize */ | |
1289 | FALSE, /* pc_relative */ | |
1290 | 0, /* bitpos */ | |
1291 | complain_overflow_dont, /* complain_on_overflow */ | |
1292 | bfd_elf_generic_reloc, /* special_function */ | |
1293 | "R_PPC64_TLS", /* name */ | |
1294 | FALSE, /* partial_inplace */ | |
1295 | 0, /* src_mask */ | |
1296 | 0, /* dst_mask */ | |
1297 | FALSE), /* pcrel_offset */ | |
1298 | ||
727fc41e AM |
1299 | HOWTO (R_PPC64_TLSGD, |
1300 | 0, /* rightshift */ | |
1301 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1302 | 32, /* bitsize */ | |
1303 | FALSE, /* pc_relative */ | |
1304 | 0, /* bitpos */ | |
1305 | complain_overflow_dont, /* complain_on_overflow */ | |
1306 | bfd_elf_generic_reloc, /* special_function */ | |
1307 | "R_PPC64_TLSGD", /* name */ | |
1308 | FALSE, /* partial_inplace */ | |
1309 | 0, /* src_mask */ | |
1310 | 0, /* dst_mask */ | |
1311 | FALSE), /* pcrel_offset */ | |
1312 | ||
1313 | HOWTO (R_PPC64_TLSLD, | |
1314 | 0, /* rightshift */ | |
1315 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1316 | 32, /* bitsize */ | |
1317 | FALSE, /* pc_relative */ | |
1318 | 0, /* bitpos */ | |
1319 | complain_overflow_dont, /* complain_on_overflow */ | |
1320 | bfd_elf_generic_reloc, /* special_function */ | |
1321 | "R_PPC64_TLSLD", /* name */ | |
1322 | FALSE, /* partial_inplace */ | |
1323 | 0, /* src_mask */ | |
1324 | 0, /* dst_mask */ | |
1325 | FALSE), /* pcrel_offset */ | |
1326 | ||
3b421ab3 AM |
1327 | HOWTO (R_PPC64_TOCSAVE, |
1328 | 0, /* rightshift */ | |
1329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1330 | 32, /* bitsize */ | |
1331 | FALSE, /* pc_relative */ | |
1332 | 0, /* bitpos */ | |
1333 | complain_overflow_dont, /* complain_on_overflow */ | |
1334 | bfd_elf_generic_reloc, /* special_function */ | |
1335 | "R_PPC64_TOCSAVE", /* name */ | |
1336 | FALSE, /* partial_inplace */ | |
1337 | 0, /* src_mask */ | |
1338 | 0, /* dst_mask */ | |
1339 | FALSE), /* pcrel_offset */ | |
1340 | ||
411e1bfb AM |
1341 | /* Computes the load module index of the load module that contains the |
1342 | definition of its TLS sym. */ | |
1343 | HOWTO (R_PPC64_DTPMOD64, | |
1344 | 0, /* rightshift */ | |
1345 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1346 | 64, /* bitsize */ | |
1347 | FALSE, /* pc_relative */ | |
1348 | 0, /* bitpos */ | |
1349 | complain_overflow_dont, /* complain_on_overflow */ | |
1350 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1351 | "R_PPC64_DTPMOD64", /* name */ | |
1352 | FALSE, /* partial_inplace */ | |
1353 | 0, /* src_mask */ | |
1354 | ONES (64), /* dst_mask */ | |
1355 | FALSE), /* pcrel_offset */ | |
1356 | ||
1357 | /* Computes a dtv-relative displacement, the difference between the value | |
1358 | of sym+add and the base address of the thread-local storage block that | |
1359 | contains the definition of sym, minus 0x8000. */ | |
1360 | HOWTO (R_PPC64_DTPREL64, | |
1361 | 0, /* rightshift */ | |
1362 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1363 | 64, /* bitsize */ | |
1364 | FALSE, /* pc_relative */ | |
1365 | 0, /* bitpos */ | |
1366 | complain_overflow_dont, /* complain_on_overflow */ | |
1367 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1368 | "R_PPC64_DTPREL64", /* name */ | |
1369 | FALSE, /* partial_inplace */ | |
1370 | 0, /* src_mask */ | |
1371 | ONES (64), /* dst_mask */ | |
1372 | FALSE), /* pcrel_offset */ | |
1373 | ||
1374 | /* A 16 bit dtprel reloc. */ | |
1375 | HOWTO (R_PPC64_DTPREL16, | |
1376 | 0, /* rightshift */ | |
1377 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1378 | 16, /* bitsize */ | |
1379 | FALSE, /* pc_relative */ | |
1380 | 0, /* bitpos */ | |
1381 | complain_overflow_signed, /* complain_on_overflow */ | |
1382 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1383 | "R_PPC64_DTPREL16", /* name */ | |
1384 | FALSE, /* partial_inplace */ | |
1385 | 0, /* src_mask */ | |
1386 | 0xffff, /* dst_mask */ | |
1387 | FALSE), /* pcrel_offset */ | |
1388 | ||
1389 | /* Like DTPREL16, but no overflow. */ | |
1390 | HOWTO (R_PPC64_DTPREL16_LO, | |
1391 | 0, /* rightshift */ | |
1392 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1393 | 16, /* bitsize */ | |
1394 | FALSE, /* pc_relative */ | |
1395 | 0, /* bitpos */ | |
1396 | complain_overflow_dont, /* complain_on_overflow */ | |
1397 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1398 | "R_PPC64_DTPREL16_LO", /* name */ | |
1399 | FALSE, /* partial_inplace */ | |
1400 | 0, /* src_mask */ | |
1401 | 0xffff, /* dst_mask */ | |
1402 | FALSE), /* pcrel_offset */ | |
1403 | ||
1404 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1405 | HOWTO (R_PPC64_DTPREL16_HI, | |
1406 | 16, /* rightshift */ | |
1407 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1408 | 16, /* bitsize */ | |
1409 | FALSE, /* pc_relative */ | |
1410 | 0, /* bitpos */ | |
f9c6b907 | 1411 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1412 | ppc64_elf_unhandled_reloc, /* special_function */ |
1413 | "R_PPC64_DTPREL16_HI", /* name */ | |
1414 | FALSE, /* partial_inplace */ | |
1415 | 0, /* src_mask */ | |
1416 | 0xffff, /* dst_mask */ | |
1417 | FALSE), /* pcrel_offset */ | |
1418 | ||
1419 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1420 | HOWTO (R_PPC64_DTPREL16_HA, | |
1421 | 16, /* rightshift */ | |
1422 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1423 | 16, /* bitsize */ | |
1424 | FALSE, /* pc_relative */ | |
1425 | 0, /* bitpos */ | |
f9c6b907 | 1426 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1427 | ppc64_elf_unhandled_reloc, /* special_function */ |
1428 | "R_PPC64_DTPREL16_HA", /* name */ | |
1429 | FALSE, /* partial_inplace */ | |
1430 | 0, /* src_mask */ | |
1431 | 0xffff, /* dst_mask */ | |
1432 | FALSE), /* pcrel_offset */ | |
1433 | ||
1434 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1435 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1436 | 32, /* rightshift */ | |
1437 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1438 | 16, /* bitsize */ | |
1439 | FALSE, /* pc_relative */ | |
1440 | 0, /* bitpos */ | |
1441 | complain_overflow_dont, /* complain_on_overflow */ | |
1442 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1443 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1444 | FALSE, /* partial_inplace */ | |
1445 | 0, /* src_mask */ | |
1446 | 0xffff, /* dst_mask */ | |
1447 | FALSE), /* pcrel_offset */ | |
1448 | ||
1449 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1450 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1451 | 32, /* rightshift */ | |
1452 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1453 | 16, /* bitsize */ | |
1454 | FALSE, /* pc_relative */ | |
1455 | 0, /* bitpos */ | |
1456 | complain_overflow_dont, /* complain_on_overflow */ | |
1457 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1458 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1459 | FALSE, /* partial_inplace */ | |
1460 | 0, /* src_mask */ | |
1461 | 0xffff, /* dst_mask */ | |
1462 | FALSE), /* pcrel_offset */ | |
1463 | ||
1464 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1465 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1466 | 48, /* rightshift */ | |
1467 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1468 | 16, /* bitsize */ | |
1469 | FALSE, /* pc_relative */ | |
1470 | 0, /* bitpos */ | |
1471 | complain_overflow_dont, /* complain_on_overflow */ | |
1472 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1473 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1474 | FALSE, /* partial_inplace */ | |
1475 | 0, /* src_mask */ | |
1476 | 0xffff, /* dst_mask */ | |
1477 | FALSE), /* pcrel_offset */ | |
1478 | ||
1479 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1480 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1481 | 48, /* rightshift */ | |
1482 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1483 | 16, /* bitsize */ | |
1484 | FALSE, /* pc_relative */ | |
1485 | 0, /* bitpos */ | |
1486 | complain_overflow_dont, /* complain_on_overflow */ | |
1487 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1488 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1489 | FALSE, /* partial_inplace */ | |
1490 | 0, /* src_mask */ | |
1491 | 0xffff, /* dst_mask */ | |
1492 | FALSE), /* pcrel_offset */ | |
1493 | ||
1494 | /* Like DTPREL16, but for insns with a DS field. */ | |
1495 | HOWTO (R_PPC64_DTPREL16_DS, | |
1496 | 0, /* rightshift */ | |
1497 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1498 | 16, /* bitsize */ | |
1499 | FALSE, /* pc_relative */ | |
1500 | 0, /* bitpos */ | |
1501 | complain_overflow_signed, /* complain_on_overflow */ | |
1502 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1503 | "R_PPC64_DTPREL16_DS", /* name */ | |
1504 | FALSE, /* partial_inplace */ | |
1505 | 0, /* src_mask */ | |
1506 | 0xfffc, /* dst_mask */ | |
1507 | FALSE), /* pcrel_offset */ | |
1508 | ||
1509 | /* Like DTPREL16_DS, but no overflow. */ | |
1510 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1511 | 0, /* rightshift */ | |
1512 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1513 | 16, /* bitsize */ | |
1514 | FALSE, /* pc_relative */ | |
1515 | 0, /* bitpos */ | |
1516 | complain_overflow_dont, /* complain_on_overflow */ | |
1517 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1518 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1519 | FALSE, /* partial_inplace */ | |
1520 | 0, /* src_mask */ | |
1521 | 0xfffc, /* dst_mask */ | |
1522 | FALSE), /* pcrel_offset */ | |
1523 | ||
1524 | /* Computes a tp-relative displacement, the difference between the value of | |
1525 | sym+add and the value of the thread pointer (r13). */ | |
1526 | HOWTO (R_PPC64_TPREL64, | |
1527 | 0, /* rightshift */ | |
1528 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1529 | 64, /* bitsize */ | |
1530 | FALSE, /* pc_relative */ | |
1531 | 0, /* bitpos */ | |
1532 | complain_overflow_dont, /* complain_on_overflow */ | |
1533 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1534 | "R_PPC64_TPREL64", /* name */ | |
1535 | FALSE, /* partial_inplace */ | |
1536 | 0, /* src_mask */ | |
1537 | ONES (64), /* dst_mask */ | |
1538 | FALSE), /* pcrel_offset */ | |
1539 | ||
1540 | /* A 16 bit tprel reloc. */ | |
1541 | HOWTO (R_PPC64_TPREL16, | |
1542 | 0, /* rightshift */ | |
1543 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1544 | 16, /* bitsize */ | |
1545 | FALSE, /* pc_relative */ | |
1546 | 0, /* bitpos */ | |
1547 | complain_overflow_signed, /* complain_on_overflow */ | |
1548 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1549 | "R_PPC64_TPREL16", /* name */ | |
1550 | FALSE, /* partial_inplace */ | |
1551 | 0, /* src_mask */ | |
1552 | 0xffff, /* dst_mask */ | |
1553 | FALSE), /* pcrel_offset */ | |
1554 | ||
1555 | /* Like TPREL16, but no overflow. */ | |
1556 | HOWTO (R_PPC64_TPREL16_LO, | |
1557 | 0, /* rightshift */ | |
1558 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1559 | 16, /* bitsize */ | |
1560 | FALSE, /* pc_relative */ | |
1561 | 0, /* bitpos */ | |
1562 | complain_overflow_dont, /* complain_on_overflow */ | |
1563 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1564 | "R_PPC64_TPREL16_LO", /* name */ | |
1565 | FALSE, /* partial_inplace */ | |
1566 | 0, /* src_mask */ | |
1567 | 0xffff, /* dst_mask */ | |
1568 | FALSE), /* pcrel_offset */ | |
1569 | ||
1570 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1571 | HOWTO (R_PPC64_TPREL16_HI, | |
1572 | 16, /* rightshift */ | |
1573 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1574 | 16, /* bitsize */ | |
1575 | FALSE, /* pc_relative */ | |
1576 | 0, /* bitpos */ | |
f9c6b907 | 1577 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1578 | ppc64_elf_unhandled_reloc, /* special_function */ |
1579 | "R_PPC64_TPREL16_HI", /* name */ | |
1580 | FALSE, /* partial_inplace */ | |
1581 | 0, /* src_mask */ | |
1582 | 0xffff, /* dst_mask */ | |
1583 | FALSE), /* pcrel_offset */ | |
1584 | ||
1585 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1586 | HOWTO (R_PPC64_TPREL16_HA, | |
1587 | 16, /* rightshift */ | |
1588 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1589 | 16, /* bitsize */ | |
1590 | FALSE, /* pc_relative */ | |
1591 | 0, /* bitpos */ | |
f9c6b907 | 1592 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1593 | ppc64_elf_unhandled_reloc, /* special_function */ |
1594 | "R_PPC64_TPREL16_HA", /* name */ | |
1595 | FALSE, /* partial_inplace */ | |
1596 | 0, /* src_mask */ | |
1597 | 0xffff, /* dst_mask */ | |
1598 | FALSE), /* pcrel_offset */ | |
1599 | ||
1600 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1601 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1602 | 32, /* rightshift */ | |
1603 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1604 | 16, /* bitsize */ | |
1605 | FALSE, /* pc_relative */ | |
1606 | 0, /* bitpos */ | |
1607 | complain_overflow_dont, /* complain_on_overflow */ | |
1608 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1609 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1610 | FALSE, /* partial_inplace */ | |
1611 | 0, /* src_mask */ | |
1612 | 0xffff, /* dst_mask */ | |
1613 | FALSE), /* pcrel_offset */ | |
1614 | ||
1615 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1616 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1617 | 32, /* rightshift */ | |
1618 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1619 | 16, /* bitsize */ | |
1620 | FALSE, /* pc_relative */ | |
1621 | 0, /* bitpos */ | |
1622 | complain_overflow_dont, /* complain_on_overflow */ | |
1623 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1624 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1625 | FALSE, /* partial_inplace */ | |
1626 | 0, /* src_mask */ | |
1627 | 0xffff, /* dst_mask */ | |
1628 | FALSE), /* pcrel_offset */ | |
1629 | ||
1630 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1631 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1632 | 48, /* rightshift */ | |
1633 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1634 | 16, /* bitsize */ | |
1635 | FALSE, /* pc_relative */ | |
1636 | 0, /* bitpos */ | |
1637 | complain_overflow_dont, /* complain_on_overflow */ | |
1638 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1639 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1640 | FALSE, /* partial_inplace */ | |
1641 | 0, /* src_mask */ | |
1642 | 0xffff, /* dst_mask */ | |
1643 | FALSE), /* pcrel_offset */ | |
1644 | ||
1645 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1646 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1647 | 48, /* rightshift */ | |
1648 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1649 | 16, /* bitsize */ | |
1650 | FALSE, /* pc_relative */ | |
1651 | 0, /* bitpos */ | |
1652 | complain_overflow_dont, /* complain_on_overflow */ | |
1653 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1654 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1655 | FALSE, /* partial_inplace */ | |
1656 | 0, /* src_mask */ | |
1657 | 0xffff, /* dst_mask */ | |
1658 | FALSE), /* pcrel_offset */ | |
1659 | ||
1660 | /* Like TPREL16, but for insns with a DS field. */ | |
1661 | HOWTO (R_PPC64_TPREL16_DS, | |
1662 | 0, /* rightshift */ | |
1663 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1664 | 16, /* bitsize */ | |
1665 | FALSE, /* pc_relative */ | |
1666 | 0, /* bitpos */ | |
1667 | complain_overflow_signed, /* complain_on_overflow */ | |
1668 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1669 | "R_PPC64_TPREL16_DS", /* name */ | |
1670 | FALSE, /* partial_inplace */ | |
1671 | 0, /* src_mask */ | |
1672 | 0xfffc, /* dst_mask */ | |
1673 | FALSE), /* pcrel_offset */ | |
1674 | ||
1675 | /* Like TPREL16_DS, but no overflow. */ | |
1676 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1677 | 0, /* rightshift */ | |
1678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1679 | 16, /* bitsize */ | |
1680 | FALSE, /* pc_relative */ | |
1681 | 0, /* bitpos */ | |
1682 | complain_overflow_dont, /* complain_on_overflow */ | |
1683 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1684 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1685 | FALSE, /* partial_inplace */ | |
1686 | 0, /* src_mask */ | |
1687 | 0xfffc, /* dst_mask */ | |
1688 | FALSE), /* pcrel_offset */ | |
1689 | ||
1690 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1691 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1692 | to the first entry relative to the TOC base (r2). */ | |
1693 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1694 | 0, /* rightshift */ | |
1695 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1696 | 16, /* bitsize */ | |
1697 | FALSE, /* pc_relative */ | |
1698 | 0, /* bitpos */ | |
1699 | complain_overflow_signed, /* complain_on_overflow */ | |
1700 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1701 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1702 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1703 | 0, /* src_mask */ |
1704 | 0xffff, /* dst_mask */ | |
b34976b6 | 1705 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1706 | |
411e1bfb AM |
1707 | /* Like GOT_TLSGD16, but no overflow. */ |
1708 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1709 | 0, /* rightshift */ |
1710 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1711 | 16, /* bitsize */ | |
b34976b6 | 1712 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1713 | 0, /* bitpos */ |
1714 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1715 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1716 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1717 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1718 | 0, /* src_mask */ |
1719 | 0xffff, /* dst_mask */ | |
b34976b6 | 1720 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1721 | |
411e1bfb AM |
1722 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1723 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1724 | 16, /* rightshift */ |
1725 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1726 | 16, /* bitsize */ | |
b34976b6 | 1727 | FALSE, /* pc_relative */ |
5bd4f169 | 1728 | 0, /* bitpos */ |
f9c6b907 | 1729 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1730 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1731 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1732 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1733 | 0, /* src_mask */ |
1734 | 0xffff, /* dst_mask */ | |
b34976b6 | 1735 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1736 | |
411e1bfb AM |
1737 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1738 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1739 | 16, /* rightshift */ |
1740 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1741 | 16, /* bitsize */ | |
b34976b6 | 1742 | FALSE, /* pc_relative */ |
5bd4f169 | 1743 | 0, /* bitpos */ |
f9c6b907 | 1744 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1745 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1746 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1747 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1748 | 0, /* src_mask */ |
1749 | 0xffff, /* dst_mask */ | |
b34976b6 | 1750 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1751 | |
411e1bfb AM |
1752 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1753 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1754 | first entry relative to the TOC base (r2). */ | |
1755 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1756 | 0, /* rightshift */ |
1757 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1758 | 16, /* bitsize */ | |
b34976b6 | 1759 | FALSE, /* pc_relative */ |
5bd4f169 | 1760 | 0, /* bitpos */ |
411e1bfb AM |
1761 | complain_overflow_signed, /* complain_on_overflow */ |
1762 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1763 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1764 | FALSE, /* partial_inplace */ |
d006db6c | 1765 | 0, /* src_mask */ |
411e1bfb | 1766 | 0xffff, /* dst_mask */ |
b34976b6 | 1767 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1768 | |
411e1bfb AM |
1769 | /* Like GOT_TLSLD16, but no overflow. */ |
1770 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1771 | 0, /* rightshift */ |
1772 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1773 | 16, /* bitsize */ | |
b34976b6 | 1774 | FALSE, /* pc_relative */ |
5bd4f169 | 1775 | 0, /* bitpos */ |
411e1bfb AM |
1776 | complain_overflow_dont, /* complain_on_overflow */ |
1777 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1778 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1779 | FALSE, /* partial_inplace */ |
d006db6c | 1780 | 0, /* src_mask */ |
411e1bfb | 1781 | 0xffff, /* dst_mask */ |
b34976b6 | 1782 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1783 | |
411e1bfb AM |
1784 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1785 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1786 | 16, /* rightshift */ | |
5bd4f169 AM |
1787 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1788 | 16, /* bitsize */ | |
b34976b6 | 1789 | FALSE, /* pc_relative */ |
5bd4f169 | 1790 | 0, /* bitpos */ |
f9c6b907 | 1791 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1792 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1793 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1794 | FALSE, /* partial_inplace */ |
d006db6c | 1795 | 0, /* src_mask */ |
411e1bfb | 1796 | 0xffff, /* dst_mask */ |
b34976b6 | 1797 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1798 | |
411e1bfb AM |
1799 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1800 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1801 | 16, /* rightshift */ | |
5bd4f169 AM |
1802 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1803 | 16, /* bitsize */ | |
b34976b6 | 1804 | FALSE, /* pc_relative */ |
5bd4f169 | 1805 | 0, /* bitpos */ |
f9c6b907 | 1806 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1807 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1808 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1809 | FALSE, /* partial_inplace */ |
d006db6c | 1810 | 0, /* src_mask */ |
411e1bfb | 1811 | 0xffff, /* dst_mask */ |
b34976b6 | 1812 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1813 | |
411e1bfb AM |
1814 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1815 | the offset to the entry relative to the TOC base (r2). */ | |
1816 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1817 | 0, /* rightshift */ |
1818 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1819 | 16, /* bitsize */ | |
b34976b6 | 1820 | FALSE, /* pc_relative */ |
5bd4f169 | 1821 | 0, /* bitpos */ |
411e1bfb | 1822 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1823 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1824 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1825 | FALSE, /* partial_inplace */ |
d006db6c | 1826 | 0, /* src_mask */ |
5bd4f169 | 1827 | 0xfffc, /* dst_mask */ |
b34976b6 | 1828 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1829 | |
411e1bfb AM |
1830 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1831 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1832 | 0, /* rightshift */ |
c061c2d8 AM |
1833 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1834 | 16, /* bitsize */ | |
b34976b6 | 1835 | FALSE, /* pc_relative */ |
5bd4f169 | 1836 | 0, /* bitpos */ |
411e1bfb AM |
1837 | complain_overflow_dont, /* complain_on_overflow */ |
1838 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1839 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1840 | FALSE, /* partial_inplace */ |
d006db6c | 1841 | 0, /* src_mask */ |
c061c2d8 | 1842 | 0xfffc, /* dst_mask */ |
b34976b6 | 1843 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1844 | |
411e1bfb AM |
1845 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1846 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1847 | 16, /* rightshift */ | |
5bd4f169 AM |
1848 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1849 | 16, /* bitsize */ | |
b34976b6 | 1850 | FALSE, /* pc_relative */ |
5bd4f169 | 1851 | 0, /* bitpos */ |
f9c6b907 | 1852 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1853 | ppc64_elf_unhandled_reloc, /* special_function */ |
1854 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1855 | FALSE, /* partial_inplace */ |
d006db6c | 1856 | 0, /* src_mask */ |
411e1bfb | 1857 | 0xffff, /* dst_mask */ |
b34976b6 | 1858 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1859 | |
411e1bfb AM |
1860 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1861 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1862 | 16, /* rightshift */ | |
1863 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1864 | 16, /* bitsize */ | |
1865 | FALSE, /* pc_relative */ | |
1866 | 0, /* bitpos */ | |
f9c6b907 | 1867 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1868 | ppc64_elf_unhandled_reloc, /* special_function */ |
1869 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1870 | FALSE, /* partial_inplace */ | |
1871 | 0, /* src_mask */ | |
1872 | 0xffff, /* dst_mask */ | |
1873 | FALSE), /* pcrel_offset */ | |
1874 | ||
1875 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1876 | offset to the entry relative to the TOC base (r2). */ | |
1877 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1878 | 0, /* rightshift */ |
1879 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1880 | 16, /* bitsize */ | |
b34976b6 | 1881 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1882 | 0, /* bitpos */ |
1883 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1884 | ppc64_elf_unhandled_reloc, /* special_function */ |
1885 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1886 | FALSE, /* partial_inplace */ |
d006db6c | 1887 | 0, /* src_mask */ |
ad8e1ba5 | 1888 | 0xfffc, /* dst_mask */ |
b34976b6 | 1889 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1890 | |
411e1bfb AM |
1891 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1892 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1893 | 0, /* rightshift */ |
1894 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1895 | 16, /* bitsize */ | |
b34976b6 | 1896 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1897 | 0, /* bitpos */ |
1898 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1899 | ppc64_elf_unhandled_reloc, /* special_function */ |
1900 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1901 | FALSE, /* partial_inplace */ |
d006db6c | 1902 | 0, /* src_mask */ |
ad8e1ba5 | 1903 | 0xfffc, /* dst_mask */ |
b34976b6 | 1904 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1905 | |
411e1bfb AM |
1906 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1907 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1908 | 16, /* rightshift */ | |
5bd4f169 AM |
1909 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1910 | 16, /* bitsize */ | |
b34976b6 | 1911 | FALSE, /* pc_relative */ |
5bd4f169 | 1912 | 0, /* bitpos */ |
f9c6b907 | 1913 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1914 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1915 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1916 | FALSE, /* partial_inplace */ |
d006db6c | 1917 | 0, /* src_mask */ |
411e1bfb | 1918 | 0xffff, /* dst_mask */ |
b34976b6 | 1919 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1920 | |
411e1bfb AM |
1921 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1922 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1923 | 16, /* rightshift */ | |
5bd4f169 AM |
1924 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1925 | 16, /* bitsize */ | |
b34976b6 | 1926 | FALSE, /* pc_relative */ |
5bd4f169 | 1927 | 0, /* bitpos */ |
f9c6b907 | 1928 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1929 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1930 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1931 | FALSE, /* partial_inplace */ |
d006db6c | 1932 | 0, /* src_mask */ |
411e1bfb | 1933 | 0xffff, /* dst_mask */ |
b34976b6 | 1934 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1935 | |
25f23106 AM |
1936 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1937 | 0, /* rightshift */ | |
1938 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1939 | 0, /* bitsize */ | |
1940 | FALSE, /* pc_relative */ | |
1941 | 0, /* bitpos */ | |
1942 | complain_overflow_dont, /* complain_on_overflow */ | |
1943 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1944 | "R_PPC64_JMP_IREL", /* name */ | |
1945 | FALSE, /* partial_inplace */ | |
1946 | 0, /* src_mask */ | |
1947 | 0, /* dst_mask */ | |
1948 | FALSE), /* pcrel_offset */ | |
1949 | ||
e054468f AM |
1950 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1951 | 0, /* rightshift */ | |
1952 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1953 | 64, /* bitsize */ | |
1954 | FALSE, /* pc_relative */ | |
1955 | 0, /* bitpos */ | |
1956 | complain_overflow_dont, /* complain_on_overflow */ | |
1957 | bfd_elf_generic_reloc, /* special_function */ | |
1958 | "R_PPC64_IRELATIVE", /* name */ | |
1959 | FALSE, /* partial_inplace */ | |
1960 | 0, /* src_mask */ | |
1961 | ONES (64), /* dst_mask */ | |
1962 | FALSE), /* pcrel_offset */ | |
1963 | ||
25f23106 AM |
1964 | /* A 16 bit relative relocation. */ |
1965 | HOWTO (R_PPC64_REL16, /* type */ | |
1966 | 0, /* rightshift */ | |
1967 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1968 | 16, /* bitsize */ | |
1969 | TRUE, /* pc_relative */ | |
1970 | 0, /* bitpos */ | |
b80eed39 | 1971 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1972 | bfd_elf_generic_reloc, /* special_function */ |
1973 | "R_PPC64_REL16", /* name */ | |
1974 | FALSE, /* partial_inplace */ | |
1975 | 0, /* src_mask */ | |
1976 | 0xffff, /* dst_mask */ | |
1977 | TRUE), /* pcrel_offset */ | |
1978 | ||
1979 | /* A 16 bit relative relocation without overflow. */ | |
1980 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1981 | 0, /* rightshift */ | |
1982 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1983 | 16, /* bitsize */ | |
1984 | TRUE, /* pc_relative */ | |
1985 | 0, /* bitpos */ | |
1986 | complain_overflow_dont,/* complain_on_overflow */ | |
1987 | bfd_elf_generic_reloc, /* special_function */ | |
1988 | "R_PPC64_REL16_LO", /* name */ | |
1989 | FALSE, /* partial_inplace */ | |
1990 | 0, /* src_mask */ | |
1991 | 0xffff, /* dst_mask */ | |
1992 | TRUE), /* pcrel_offset */ | |
1993 | ||
1994 | /* The high order 16 bits of a relative address. */ | |
1995 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1996 | 16, /* rightshift */ | |
1997 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1998 | 16, /* bitsize */ | |
1999 | TRUE, /* pc_relative */ | |
2000 | 0, /* bitpos */ | |
f9c6b907 | 2001 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2002 | bfd_elf_generic_reloc, /* special_function */ |
2003 | "R_PPC64_REL16_HI", /* name */ | |
2004 | FALSE, /* partial_inplace */ | |
2005 | 0, /* src_mask */ | |
2006 | 0xffff, /* dst_mask */ | |
2007 | TRUE), /* pcrel_offset */ | |
2008 | ||
2009 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2010 | the low 16 bits, treated as a signed number, is negative. */ | |
2011 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2012 | 16, /* rightshift */ | |
2013 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2014 | 16, /* bitsize */ | |
2015 | TRUE, /* pc_relative */ | |
2016 | 0, /* bitpos */ | |
f9c6b907 | 2017 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2018 | ppc64_elf_ha_reloc, /* special_function */ |
2019 | "R_PPC64_REL16_HA", /* name */ | |
2020 | FALSE, /* partial_inplace */ | |
2021 | 0, /* src_mask */ | |
2022 | 0xffff, /* dst_mask */ | |
2023 | TRUE), /* pcrel_offset */ | |
2024 | ||
f9c6b907 AM |
2025 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2026 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2027 | 16, /* rightshift */ | |
2028 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2029 | 16, /* bitsize */ | |
2030 | FALSE, /* pc_relative */ | |
2031 | 0, /* bitpos */ | |
2032 | complain_overflow_dont, /* complain_on_overflow */ | |
2033 | bfd_elf_generic_reloc, /* special_function */ | |
2034 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2035 | FALSE, /* partial_inplace */ | |
2036 | 0, /* src_mask */ | |
2037 | 0xffff, /* dst_mask */ | |
2038 | FALSE), /* pcrel_offset */ | |
2039 | ||
2040 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2041 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2042 | 16, /* rightshift */ | |
2043 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2044 | 16, /* bitsize */ | |
2045 | FALSE, /* pc_relative */ | |
2046 | 0, /* bitpos */ | |
2047 | complain_overflow_dont, /* complain_on_overflow */ | |
2048 | ppc64_elf_ha_reloc, /* special_function */ | |
2049 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2050 | FALSE, /* partial_inplace */ | |
2051 | 0, /* src_mask */ | |
2052 | 0xffff, /* dst_mask */ | |
2053 | FALSE), /* pcrel_offset */ | |
2054 | ||
2055 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2056 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2057 | 16, /* rightshift */ | |
2058 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2059 | 16, /* bitsize */ | |
2060 | FALSE, /* pc_relative */ | |
2061 | 0, /* bitpos */ | |
2062 | complain_overflow_dont, /* complain_on_overflow */ | |
2063 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2064 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2065 | FALSE, /* partial_inplace */ | |
2066 | 0, /* src_mask */ | |
2067 | 0xffff, /* dst_mask */ | |
2068 | FALSE), /* pcrel_offset */ | |
2069 | ||
2070 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2071 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2072 | 16, /* rightshift */ | |
2073 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2074 | 16, /* bitsize */ | |
2075 | FALSE, /* pc_relative */ | |
2076 | 0, /* bitpos */ | |
2077 | complain_overflow_dont, /* complain_on_overflow */ | |
2078 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2079 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2080 | FALSE, /* partial_inplace */ | |
2081 | 0, /* src_mask */ | |
2082 | 0xffff, /* dst_mask */ | |
2083 | FALSE), /* pcrel_offset */ | |
2084 | ||
2085 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2086 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2087 | 16, /* rightshift */ | |
2088 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2089 | 16, /* bitsize */ | |
2090 | FALSE, /* pc_relative */ | |
2091 | 0, /* bitpos */ | |
2092 | complain_overflow_dont, /* complain_on_overflow */ | |
2093 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2094 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2095 | FALSE, /* partial_inplace */ | |
2096 | 0, /* src_mask */ | |
2097 | 0xffff, /* dst_mask */ | |
2098 | FALSE), /* pcrel_offset */ | |
2099 | ||
2100 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2101 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2102 | 16, /* rightshift */ | |
2103 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2104 | 16, /* bitsize */ | |
2105 | FALSE, /* pc_relative */ | |
2106 | 0, /* bitpos */ | |
2107 | complain_overflow_dont, /* complain_on_overflow */ | |
2108 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2109 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2110 | FALSE, /* partial_inplace */ | |
2111 | 0, /* src_mask */ | |
2112 | 0xffff, /* dst_mask */ | |
2113 | FALSE), /* pcrel_offset */ | |
2114 | ||
45965137 AM |
2115 | /* Like ADDR64, but use local entry point of function. */ |
2116 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2117 | 0, /* rightshift */ | |
2118 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2119 | 64, /* bitsize */ | |
2120 | FALSE, /* pc_relative */ | |
2121 | 0, /* bitpos */ | |
2122 | complain_overflow_dont, /* complain_on_overflow */ | |
2123 | bfd_elf_generic_reloc, /* special_function */ | |
2124 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2125 | FALSE, /* partial_inplace */ | |
2126 | 0, /* src_mask */ | |
2127 | ONES (64), /* dst_mask */ | |
2128 | FALSE), /* pcrel_offset */ | |
2129 | ||
5bd4f169 AM |
2130 | /* GNU extension to record C++ vtable hierarchy. */ |
2131 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2132 | 0, /* rightshift */ | |
2133 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2134 | 0, /* bitsize */ | |
b34976b6 | 2135 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2136 | 0, /* bitpos */ |
2137 | complain_overflow_dont, /* complain_on_overflow */ | |
2138 | NULL, /* special_function */ | |
2139 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2140 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2141 | 0, /* src_mask */ |
2142 | 0, /* dst_mask */ | |
b34976b6 | 2143 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2144 | |
2145 | /* GNU extension to record C++ vtable member usage. */ | |
2146 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2147 | 0, /* rightshift */ | |
2148 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2149 | 0, /* bitsize */ | |
b34976b6 | 2150 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2151 | 0, /* bitpos */ |
2152 | complain_overflow_dont, /* complain_on_overflow */ | |
2153 | NULL, /* special_function */ | |
2154 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2155 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2156 | 0, /* src_mask */ |
2157 | 0, /* dst_mask */ | |
b34976b6 | 2158 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2159 | }; |
2160 | ||
2161 | \f | |
2162 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2163 | be done. */ | |
2164 | ||
2165 | static void | |
4ce794b7 | 2166 | ppc_howto_init (void) |
5bd4f169 AM |
2167 | { |
2168 | unsigned int i, type; | |
2169 | ||
a4b6fadd | 2170 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
2171 | { |
2172 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 2173 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
2174 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
2175 | } | |
2176 | } | |
2177 | ||
2178 | static reloc_howto_type * | |
4ce794b7 AM |
2179 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2180 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2181 | { |
411e1bfb | 2182 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2183 | |
2184 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2185 | /* Initialize howto table if needed. */ | |
2186 | ppc_howto_init (); | |
2187 | ||
4ce794b7 | 2188 | switch (code) |
5bd4f169 AM |
2189 | { |
2190 | default: | |
4ce794b7 | 2191 | return NULL; |
5bd4f169 | 2192 | |
411e1bfb AM |
2193 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2194 | break; | |
2195 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2196 | break; | |
2197 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2198 | break; | |
2199 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2200 | break; | |
2201 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2202 | break; | |
2203 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2204 | break; | |
f9c6b907 AM |
2205 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2206 | break; | |
411e1bfb | 2207 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2208 | break; |
f9c6b907 AM |
2209 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2210 | break; | |
411e1bfb | 2211 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2212 | break; |
411e1bfb | 2213 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2214 | break; |
411e1bfb | 2215 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2216 | break; |
411e1bfb | 2217 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2218 | break; |
411e1bfb | 2219 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2220 | break; |
411e1bfb | 2221 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2222 | break; |
411e1bfb | 2223 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2224 | break; |
411e1bfb | 2225 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2226 | break; |
411e1bfb | 2227 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2228 | break; |
411e1bfb | 2229 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2230 | break; |
411e1bfb | 2231 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2232 | break; |
411e1bfb | 2233 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2234 | break; |
411e1bfb | 2235 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2236 | break; |
411e1bfb | 2237 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2238 | break; |
411e1bfb | 2239 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2240 | break; |
411e1bfb | 2241 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2242 | break; |
411e1bfb | 2243 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2244 | break; |
411e1bfb | 2245 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2246 | break; |
411e1bfb | 2247 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2248 | break; |
411e1bfb | 2249 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2250 | break; |
411e1bfb | 2251 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2252 | break; |
411e1bfb | 2253 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2254 | break; |
411e1bfb | 2255 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2256 | break; |
411e1bfb | 2257 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2258 | break; |
411e1bfb | 2259 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2260 | break; |
411e1bfb | 2261 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2262 | break; |
411e1bfb | 2263 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2264 | break; |
411e1bfb | 2265 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2266 | break; |
411e1bfb | 2267 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2268 | break; |
411e1bfb | 2269 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2270 | break; |
411e1bfb | 2271 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2272 | break; |
411e1bfb | 2273 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2274 | break; |
411e1bfb | 2275 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2276 | break; |
411e1bfb | 2277 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2278 | break; |
411e1bfb | 2279 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2280 | break; |
411e1bfb | 2281 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2282 | break; |
411e1bfb | 2283 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2284 | break; |
411e1bfb | 2285 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2286 | break; |
411e1bfb | 2287 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2288 | break; |
411e1bfb | 2289 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2290 | break; |
411e1bfb | 2291 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2292 | break; |
411e1bfb | 2293 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2294 | break; |
411e1bfb | 2295 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2296 | break; |
411e1bfb | 2297 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2298 | break; |
411e1bfb | 2299 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2300 | break; |
411e1bfb | 2301 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2302 | break; |
411e1bfb | 2303 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2304 | break; |
411e1bfb | 2305 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2306 | break; |
411e1bfb | 2307 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2308 | break; |
411e1bfb | 2309 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2310 | break; |
411e1bfb | 2311 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2312 | break; |
411e1bfb | 2313 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2314 | break; |
411e1bfb | 2315 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2316 | break; |
727fc41e AM |
2317 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2318 | break; | |
2319 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2320 | break; | |
411e1bfb | 2321 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2322 | break; |
411e1bfb | 2323 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2324 | break; |
411e1bfb | 2325 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2326 | break; |
411e1bfb | 2327 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2328 | break; |
f9c6b907 AM |
2329 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2330 | break; | |
411e1bfb | 2331 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2332 | break; |
f9c6b907 AM |
2333 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2334 | break; | |
411e1bfb | 2335 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2336 | break; |
411e1bfb AM |
2337 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2338 | break; | |
2339 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2340 | break; | |
2341 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2342 | break; | |
f9c6b907 AM |
2343 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2344 | break; | |
411e1bfb AM |
2345 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2346 | break; | |
f9c6b907 AM |
2347 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2348 | break; | |
411e1bfb AM |
2349 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2350 | break; | |
2351 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2352 | break; | |
2353 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2354 | break; | |
2355 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2356 | break; | |
2357 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2358 | break; | |
2359 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2360 | break; | |
2361 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2362 | break; | |
2363 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2364 | break; | |
2365 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2366 | break; | |
2367 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2368 | break; | |
2369 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2370 | break; | |
2371 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2372 | break; | |
2373 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2374 | break; | |
2375 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2376 | break; | |
2377 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2378 | break; | |
2379 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2380 | break; | |
2381 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2382 | break; | |
2383 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2384 | break; | |
2385 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2386 | break; | |
2387 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2388 | break; | |
2389 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2390 | break; | |
2391 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2392 | break; | |
2393 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2394 | break; | |
2395 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2396 | break; | |
2397 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2398 | break; | |
2399 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2400 | break; | |
2401 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2402 | break; | |
2403 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2404 | break; | |
2405 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2406 | break; | |
25f23106 AM |
2407 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2408 | break; | |
2409 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2410 | break; | |
2411 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2412 | break; | |
2413 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2414 | break; | |
45965137 AM |
2415 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2416 | break; | |
411e1bfb AM |
2417 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2418 | break; | |
2419 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2420 | break; |
2421 | } | |
2422 | ||
4ce794b7 | 2423 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2424 | }; |
2425 | ||
157090f7 AM |
2426 | static reloc_howto_type * |
2427 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2428 | const char *r_name) | |
2429 | { | |
2430 | unsigned int i; | |
2431 | ||
a4b6fadd | 2432 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
2433 | if (ppc64_elf_howto_raw[i].name != NULL |
2434 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2435 | return &ppc64_elf_howto_raw[i]; | |
2436 | ||
2437 | return NULL; | |
2438 | } | |
2439 | ||
5bd4f169 AM |
2440 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2441 | ||
2442 | static void | |
4ce794b7 AM |
2443 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2444 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2445 | { |
65f38f15 AM |
2446 | unsigned int type; |
2447 | ||
ef60b7ff | 2448 | /* Initialize howto table if needed. */ |
5bd4f169 | 2449 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2450 | ppc_howto_init (); |
2451 | ||
65f38f15 | 2452 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 2453 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d JJ |
2454 | { |
2455 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2456 | abfd, (int) type); |
2457 | type = R_PPC64_NONE; | |
d0fb9a8d | 2458 | } |
65f38f15 | 2459 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2460 | } |
2461 | ||
04c9666a | 2462 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2463 | |
2464 | static bfd_reloc_status_type | |
4ce794b7 AM |
2465 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2466 | void *data, asection *input_section, | |
2467 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2468 | { |
805fc799 AM |
2469 | /* If this is a relocatable link (output_bfd test tells us), just |
2470 | call the generic function. Any adjustment will be done at final | |
2471 | link time. */ | |
2472 | if (output_bfd != NULL) | |
cedb70c5 | 2473 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2474 | input_section, output_bfd, error_message); |
2475 | ||
2476 | /* Adjust the addend for sign extension of the low 16 bits. | |
2477 | We won't actually be using the low 16 bits, so trashing them | |
2478 | doesn't matter. */ | |
2479 | reloc_entry->addend += 0x8000; | |
2480 | return bfd_reloc_continue; | |
2481 | } | |
5bd4f169 | 2482 | |
2441e016 AM |
2483 | static bfd_reloc_status_type |
2484 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2485 | void *data, asection *input_section, | |
2486 | bfd *output_bfd, char **error_message) | |
2487 | { | |
2488 | if (output_bfd != NULL) | |
2489 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2490 | input_section, output_bfd, error_message); | |
2491 | ||
699733f6 AM |
2492 | if (strcmp (symbol->section->name, ".opd") == 0 |
2493 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2494 | { |
2495 | bfd_vma dest = opd_entry_value (symbol->section, | |
2496 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2497 | NULL, NULL, FALSE); |
2441e016 AM |
2498 | if (dest != (bfd_vma) -1) |
2499 | reloc_entry->addend = dest - (symbol->value | |
2500 | + symbol->section->output_section->vma | |
2501 | + symbol->section->output_offset); | |
2502 | } | |
810d4e75 AM |
2503 | else |
2504 | { | |
2505 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2506 | ||
2507 | if (symbol->section->owner != abfd | |
2508 | && abiversion (symbol->section->owner) >= 2) | |
2509 | { | |
2510 | unsigned int i; | |
2511 | ||
2512 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2513 | { | |
2514 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2515 | ||
2516 | if (strcmp (symdef->name, symbol->name) == 0) | |
2517 | { | |
2518 | elfsym = (elf_symbol_type *) symdef; | |
2519 | break; | |
2520 | } | |
2521 | } | |
2522 | } | |
2523 | reloc_entry->addend | |
2524 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2525 | } | |
2441e016 AM |
2526 | return bfd_reloc_continue; |
2527 | } | |
2528 | ||
805fc799 | 2529 | static bfd_reloc_status_type |
4ce794b7 AM |
2530 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2531 | void *data, asection *input_section, | |
2532 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2533 | { |
2534 | long insn; | |
04c9666a | 2535 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2536 | bfd_size_type octets; |
794e51c0 AM |
2537 | /* Assume 'at' branch hints. */ |
2538 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2539 | |
2540 | /* If this is a relocatable link (output_bfd test tells us), just | |
2541 | call the generic function. Any adjustment will be done at final | |
2542 | link time. */ | |
5bd4f169 | 2543 | if (output_bfd != NULL) |
cedb70c5 | 2544 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2545 | input_section, output_bfd, error_message); |
2546 | ||
2547 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2548 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2549 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2550 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2551 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2552 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2553 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2554 | |
794e51c0 | 2555 | if (is_isa_v2) |
5bd4f169 | 2556 | { |
805fc799 AM |
2557 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2558 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2559 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2560 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2561 | insn |= 0x02 << 21; | |
2562 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2563 | insn |= 0x08 << 21; | |
2564 | else | |
2441e016 | 2565 | goto out; |
5bd4f169 | 2566 | } |
805fc799 AM |
2567 | else |
2568 | { | |
2569 | bfd_vma target = 0; | |
2570 | bfd_vma from; | |
5bd4f169 | 2571 | |
805fc799 AM |
2572 | if (!bfd_is_com_section (symbol->section)) |
2573 | target = symbol->value; | |
2574 | target += symbol->section->output_section->vma; | |
2575 | target += symbol->section->output_offset; | |
2576 | target += reloc_entry->addend; | |
5bd4f169 | 2577 | |
805fc799 AM |
2578 | from = (reloc_entry->address |
2579 | + input_section->output_offset | |
2580 | + input_section->output_section->vma); | |
5bd4f169 | 2581 | |
805fc799 AM |
2582 | /* Invert 'y' bit if not the default. */ |
2583 | if ((bfd_signed_vma) (target - from) < 0) | |
2584 | insn ^= 0x01 << 21; | |
2585 | } | |
4ce794b7 | 2586 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2587 | out: |
2588 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2589 | input_section, output_bfd, error_message); | |
805fc799 | 2590 | } |
5bd4f169 | 2591 | |
805fc799 | 2592 | static bfd_reloc_status_type |
4ce794b7 AM |
2593 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2594 | void *data, asection *input_section, | |
2595 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2596 | { |
2597 | /* If this is a relocatable link (output_bfd test tells us), just | |
2598 | call the generic function. Any adjustment will be done at final | |
2599 | link time. */ | |
2600 | if (output_bfd != NULL) | |
cedb70c5 | 2601 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2602 | input_section, output_bfd, error_message); |
5bd4f169 | 2603 | |
805fc799 AM |
2604 | /* Subtract the symbol section base address. */ |
2605 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2606 | return bfd_reloc_continue; |
2607 | } | |
2608 | ||
805fc799 | 2609 | static bfd_reloc_status_type |
4ce794b7 AM |
2610 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2611 | void *data, asection *input_section, | |
2612 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2613 | { |
2614 | /* If this is a relocatable link (output_bfd test tells us), just | |
2615 | call the generic function. Any adjustment will be done at final | |
2616 | link time. */ | |
2617 | if (output_bfd != NULL) | |
cedb70c5 | 2618 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2619 | input_section, output_bfd, error_message); |
2620 | ||
2621 | /* Subtract the symbol section base address. */ | |
2622 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2623 | ||
2624 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2625 | reloc_entry->addend += 0x8000; | |
2626 | return bfd_reloc_continue; | |
2627 | } | |
2628 | ||
2629 | static bfd_reloc_status_type | |
4ce794b7 AM |
2630 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2631 | void *data, asection *input_section, | |
2632 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2633 | { |
2634 | bfd_vma TOCstart; | |
2635 | ||
2636 | /* If this is a relocatable link (output_bfd test tells us), just | |
2637 | call the generic function. Any adjustment will be done at final | |
2638 | link time. */ | |
2639 | if (output_bfd != NULL) | |
cedb70c5 | 2640 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2641 | input_section, output_bfd, error_message); |
2642 | ||
2643 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2644 | if (TOCstart == 0) | |
1c865ab2 | 2645 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2646 | |
2647 | /* Subtract the TOC base address. */ | |
2648 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2649 | return bfd_reloc_continue; | |
2650 | } | |
2651 | ||
2652 | static bfd_reloc_status_type | |
4ce794b7 AM |
2653 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2654 | void *data, asection *input_section, | |
2655 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2656 | { |
2657 | bfd_vma TOCstart; | |
2658 | ||
2659 | /* If this is a relocatable link (output_bfd test tells us), just | |
2660 | call the generic function. Any adjustment will be done at final | |
2661 | link time. */ | |
2662 | if (output_bfd != NULL) | |
cedb70c5 | 2663 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2664 | input_section, output_bfd, error_message); |
2665 | ||
2666 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2667 | if (TOCstart == 0) | |
1c865ab2 | 2668 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2669 | |
2670 | /* Subtract the TOC base address. */ | |
2671 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2672 | ||
2673 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2674 | reloc_entry->addend += 0x8000; | |
2675 | return bfd_reloc_continue; | |
2676 | } | |
2677 | ||
2678 | static bfd_reloc_status_type | |
4ce794b7 AM |
2679 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2680 | void *data, asection *input_section, | |
2681 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2682 | { |
2683 | bfd_vma TOCstart; | |
2684 | bfd_size_type octets; | |
2685 | ||
2686 | /* If this is a relocatable link (output_bfd test tells us), just | |
2687 | call the generic function. Any adjustment will be done at final | |
2688 | link time. */ | |
2689 | if (output_bfd != NULL) | |
cedb70c5 | 2690 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2691 | input_section, output_bfd, error_message); |
2692 | ||
2693 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2694 | if (TOCstart == 0) | |
1c865ab2 | 2695 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2696 | |
2697 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2698 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2699 | return bfd_reloc_ok; | |
2700 | } | |
2701 | ||
2702 | static bfd_reloc_status_type | |
4ce794b7 AM |
2703 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2704 | void *data, asection *input_section, | |
2705 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2706 | { |
2707 | /* If this is a relocatable link (output_bfd test tells us), just | |
2708 | call the generic function. Any adjustment will be done at final | |
2709 | link time. */ | |
2710 | if (output_bfd != NULL) | |
cedb70c5 | 2711 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2712 | input_section, output_bfd, error_message); |
2713 | ||
2714 | if (error_message != NULL) | |
2715 | { | |
2716 | static char buf[60]; | |
2717 | sprintf (buf, "generic linker can't handle %s", | |
2718 | reloc_entry->howto->name); | |
2719 | *error_message = buf; | |
2720 | } | |
2721 | return bfd_reloc_dangerous; | |
2722 | } | |
2723 | ||
927be08e AM |
2724 | /* Track GOT entries needed for a given symbol. We might need more |
2725 | than one got entry per symbol. */ | |
2726 | struct got_entry | |
2727 | { | |
2728 | struct got_entry *next; | |
2729 | ||
2730 | /* The symbol addend that we'll be placing in the GOT. */ | |
2731 | bfd_vma addend; | |
2732 | ||
2733 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2734 | symbol referenced from different input files. This is to support | |
2735 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2736 | from one input file to another. After partitioning into TOC groups | |
2737 | we merge entries within the group. | |
2738 | ||
2739 | Point to the BFD owning this GOT entry. */ | |
2740 | bfd *owner; | |
2741 | ||
2742 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2743 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2744 | unsigned char tls_type; |
927be08e AM |
2745 | |
2746 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2747 | unsigned char is_indirect; |
927be08e AM |
2748 | |
2749 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2750 | union | |
2751 | { | |
2752 | bfd_signed_vma refcount; | |
2753 | bfd_vma offset; | |
2754 | struct got_entry *ent; | |
2755 | } got; | |
2756 | }; | |
2757 | ||
2758 | /* The same for PLT. */ | |
2759 | struct plt_entry | |
2760 | { | |
2761 | struct plt_entry *next; | |
2762 | ||
2763 | bfd_vma addend; | |
2764 | ||
2765 | union | |
2766 | { | |
2767 | bfd_signed_vma refcount; | |
2768 | bfd_vma offset; | |
2769 | } plt; | |
2770 | }; | |
2771 | ||
e717da7e AM |
2772 | struct ppc64_elf_obj_tdata |
2773 | { | |
2774 | struct elf_obj_tdata elf; | |
2775 | ||
2776 | /* Shortcuts to dynamic linker sections. */ | |
2777 | asection *got; | |
2778 | asection *relgot; | |
2779 | ||
b3fac117 AM |
2780 | /* Used during garbage collection. We attach global symbols defined |
2781 | on removed .opd entries to this section so that the sym is removed. */ | |
2782 | asection *deleted_section; | |
81688140 | 2783 | |
927be08e | 2784 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2785 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2786 | struct got_entry tlsld_got; |
8860955f | 2787 | |
729eabd5 AM |
2788 | union { |
2789 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2790 | Elf_Internal_Rela *relocs; | |
2791 | ||
2792 | /* Section contents. */ | |
2793 | bfd_byte *contents; | |
2794 | } opd; | |
d77c8a4b AM |
2795 | |
2796 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2797 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2798 | unsigned int has_small_toc_reloc : 1; |
2799 | ||
560c8763 AM |
2800 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2801 | instruction not one we handle. */ | |
2802 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2803 | }; |
2804 | ||
2805 | #define ppc64_elf_tdata(bfd) \ | |
2806 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2807 | ||
2808 | #define ppc64_tlsld_got(bfd) \ | |
2809 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2810 | ||
0c8d6e5c AM |
2811 | #define is_ppc64_elf(bfd) \ |
2812 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2813 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2814 | |
e717da7e AM |
2815 | /* Override the generic function because we store some extras. */ |
2816 | ||
2817 | static bfd_boolean | |
2818 | ppc64_elf_mkobject (bfd *abfd) | |
2819 | { | |
0ffa91dd | 2820 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2821 | PPC64_ELF_DATA); |
e717da7e AM |
2822 | } |
2823 | ||
feee612b AM |
2824 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2825 | default is 32 bit. */ | |
2826 | ||
b34976b6 | 2827 | static bfd_boolean |
4ce794b7 | 2828 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2829 | { |
2830 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2831 | { | |
2832 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2833 | ||
2834 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2835 | { | |
2836 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2837 | abfd->arch_info = abfd->arch_info->next; | |
2838 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2839 | } | |
2840 | } | |
b34976b6 | 2841 | return TRUE; |
feee612b AM |
2842 | } |
2843 | ||
d37c89e5 AM |
2844 | /* Support for core dump NOTE sections. */ |
2845 | ||
2846 | static bfd_boolean | |
2847 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2848 | { | |
eea6121a | 2849 | size_t offset, size; |
d37c89e5 AM |
2850 | |
2851 | if (note->descsz != 504) | |
2852 | return FALSE; | |
2853 | ||
2854 | /* pr_cursig */ | |
228e534f | 2855 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2856 | |
2857 | /* pr_pid */ | |
228e534f | 2858 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2859 | |
2860 | /* pr_reg */ | |
2861 | offset = 112; | |
eea6121a | 2862 | size = 384; |
d37c89e5 AM |
2863 | |
2864 | /* Make a ".reg/999" section. */ | |
2865 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2866 | size, note->descpos + offset); |
d37c89e5 AM |
2867 | } |
2868 | ||
2869 | static bfd_boolean | |
2870 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2871 | { | |
2872 | if (note->descsz != 136) | |
2873 | return FALSE; | |
2874 | ||
228e534f | 2875 | elf_tdata (abfd)->core->pid |
bc989cdc | 2876 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 2877 | elf_tdata (abfd)->core->program |
d37c89e5 | 2878 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 2879 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
2880 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
2881 | ||
2882 | return TRUE; | |
2883 | } | |
2884 | ||
183e98be AM |
2885 | static char * |
2886 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2887 | ...) | |
2888 | { | |
2889 | switch (note_type) | |
2890 | { | |
2891 | default: | |
2892 | return NULL; | |
2893 | ||
2894 | case NT_PRPSINFO: | |
2895 | { | |
2896 | char data[136]; | |
2897 | va_list ap; | |
2898 | ||
2899 | va_start (ap, note_type); | |
75cd47ed | 2900 | memset (data, 0, sizeof (data)); |
183e98be AM |
2901 | strncpy (data + 40, va_arg (ap, const char *), 16); |
2902 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2903 | va_end (ap); | |
2904 | return elfcore_write_note (abfd, buf, bufsiz, | |
2905 | "CORE", note_type, data, sizeof (data)); | |
2906 | } | |
2907 | ||
2908 | case NT_PRSTATUS: | |
2909 | { | |
2910 | char data[504]; | |
2911 | va_list ap; | |
2912 | long pid; | |
2913 | int cursig; | |
2914 | const void *greg; | |
2915 | ||
2916 | va_start (ap, note_type); | |
2917 | memset (data, 0, 112); | |
2918 | pid = va_arg (ap, long); | |
2919 | bfd_put_32 (abfd, pid, data + 32); | |
2920 | cursig = va_arg (ap, int); | |
2921 | bfd_put_16 (abfd, cursig, data + 12); | |
2922 | greg = va_arg (ap, const void *); | |
2923 | memcpy (data + 112, greg, 384); | |
2924 | memset (data + 496, 0, 8); | |
2925 | va_end (ap); | |
2926 | return elfcore_write_note (abfd, buf, bufsiz, | |
2927 | "CORE", note_type, data, sizeof (data)); | |
2928 | } | |
2929 | } | |
2930 | } | |
2931 | ||
5d35169e AM |
2932 | /* Add extra PPC sections. */ |
2933 | ||
b35d266b | 2934 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2935 | { |
0112cd26 NC |
2936 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2937 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2938 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2939 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2940 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2941 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2942 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2943 | }; |
2944 | ||
7c8fe5c4 AM |
2945 | enum _ppc64_sec_type { |
2946 | sec_normal = 0, | |
2947 | sec_opd = 1, | |
2948 | sec_toc = 2 | |
2949 | }; | |
2950 | ||
f0abc2a1 AM |
2951 | struct _ppc64_elf_section_data |
2952 | { | |
2953 | struct bfd_elf_section_data elf; | |
411e1bfb | 2954 | |
f0abc2a1 AM |
2955 | union |
2956 | { | |
51aecdc5 AM |
2957 | /* An array with one entry for each opd function descriptor, |
2958 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
2959 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
2960 | struct _opd_sec_data |
2961 | { | |
2962 | /* Points to the function code section for local opd entries. */ | |
2963 | asection **func_sec; | |
2964 | ||
2965 | /* After editing .opd, adjust references to opd local syms. */ | |
2966 | long *adjust; | |
2967 | } opd; | |
7c8fe5c4 | 2968 | |
3a71aa26 AM |
2969 | /* An array for toc sections, indexed by offset/8. */ |
2970 | struct _toc_sec_data | |
2971 | { | |
2972 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2973 | unsigned *symndx; | |
2974 | ||
2975 | /* And the relocation addend. */ | |
2976 | bfd_vma *add; | |
2977 | } toc; | |
7c8fe5c4 AM |
2978 | } u; |
2979 | ||
2980 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2981 | |
7c8fe5c4 AM |
2982 | /* Flag set when small branches are detected. Used to |
2983 | select suitable defaults for the stub group size. */ | |
2984 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2985 | }; |
2986 | ||
2987 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2988 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2989 | |
2990 | static bfd_boolean | |
4ce794b7 | 2991 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2992 | { |
f592407e AM |
2993 | if (!sec->used_by_bfd) |
2994 | { | |
2995 | struct _ppc64_elf_section_data *sdata; | |
2996 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2997 | |
f592407e AM |
2998 | sdata = bfd_zalloc (abfd, amt); |
2999 | if (sdata == NULL) | |
3000 | return FALSE; | |
3001 | sec->used_by_bfd = sdata; | |
3002 | } | |
f0abc2a1 AM |
3003 | |
3004 | return _bfd_elf_new_section_hook (abfd, sec); | |
3005 | } | |
4025353c | 3006 | |
74f0fb50 | 3007 | static struct _opd_sec_data * |
4025353c AM |
3008 | get_opd_info (asection * sec) |
3009 | { | |
3010 | if (sec != NULL | |
3011 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3012 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3013 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3014 | return NULL; |
3015 | } | |
90e3cdf2 JJ |
3016 | \f |
3017 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
3018 | static bfd_boolean synthetic_relocatable; |
3019 | ||
699733f6 | 3020 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3021 | |
3022 | static int | |
3023 | compare_symbols (const void *ap, const void *bp) | |
3024 | { | |
3025 | const asymbol *a = * (const asymbol **) ap; | |
3026 | const asymbol *b = * (const asymbol **) bp; | |
3027 | ||
699733f6 AM |
3028 | /* Section symbols first. */ |
3029 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3030 | return -1; |
699733f6 | 3031 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3032 | return 1; |
3033 | ||
699733f6 | 3034 | /* then .opd symbols. */ |
ffcfec52 AM |
3035 | if (strcmp (a->section->name, ".opd") == 0 |
3036 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 3037 | return -1; |
ffcfec52 AM |
3038 | if (strcmp (a->section->name, ".opd") != 0 |
3039 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
3040 | return 1; |
3041 | ||
699733f6 | 3042 | /* then other code symbols. */ |
90e3cdf2 JJ |
3043 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3044 | == (SEC_CODE | SEC_ALLOC) | |
3045 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3046 | != (SEC_CODE | SEC_ALLOC)) | |
3047 | return -1; | |
3048 | ||
3049 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3050 | != (SEC_CODE | SEC_ALLOC) | |
3051 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3052 | == (SEC_CODE | SEC_ALLOC)) | |
3053 | return 1; | |
3054 | ||
3055 | if (synthetic_relocatable) | |
3056 | { | |
3057 | if (a->section->id < b->section->id) | |
3058 | return -1; | |
3059 | ||
3060 | if (a->section->id > b->section->id) | |
3061 | return 1; | |
3062 | } | |
3063 | ||
3064 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3065 | return -1; | |
3066 | ||
3067 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3068 | return 1; | |
3069 | ||
4d35a0aa AM |
3070 | /* For syms with the same value, prefer strong dynamic global function |
3071 | syms over other syms. */ | |
3072 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3073 | return -1; | |
3074 | ||
3075 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3076 | return 1; | |
3077 | ||
3078 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3079 | return -1; | |
3080 | ||
3081 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3082 | return 1; | |
3083 | ||
3084 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3085 | return -1; | |
3086 | ||
3087 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3088 | return 1; | |
3089 | ||
3090 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3091 | return -1; | |
3092 | ||
3093 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3094 | return 1; | |
3095 | ||
90e3cdf2 JJ |
3096 | return 0; |
3097 | } | |
3098 | ||
699733f6 | 3099 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3100 | |
699733f6 | 3101 | static asymbol * |
7292b3ac | 3102 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3103 | { |
699733f6 | 3104 | long mid; |
90e3cdf2 | 3105 | |
7292b3ac | 3106 | if (id == (unsigned) -1) |
699733f6 AM |
3107 | { |
3108 | while (lo < hi) | |
3109 | { | |
3110 | mid = (lo + hi) >> 1; | |
3111 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3112 | lo = mid + 1; | |
3113 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3114 | hi = mid; | |
3115 | else | |
3116 | return syms[mid]; | |
3117 | } | |
3118 | } | |
3119 | else | |
3120 | { | |
3121 | while (lo < hi) | |
3122 | { | |
3123 | mid = (lo + hi) >> 1; | |
3124 | if (syms[mid]->section->id < id) | |
3125 | lo = mid + 1; | |
3126 | else if (syms[mid]->section->id > id) | |
3127 | hi = mid; | |
3128 | else if (syms[mid]->value < value) | |
3129 | lo = mid + 1; | |
3130 | else if (syms[mid]->value > value) | |
3131 | hi = mid; | |
3132 | else | |
3133 | return syms[mid]; | |
3134 | } | |
3135 | } | |
3136 | return NULL; | |
90e3cdf2 JJ |
3137 | } |
3138 | ||
468392fb AM |
3139 | static bfd_boolean |
3140 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3141 | { | |
3142 | bfd_vma vma = *(bfd_vma *) ptr; | |
3143 | return ((section->flags & SEC_ALLOC) != 0 | |
3144 | && section->vma <= vma | |
3145 | && vma < section->vma + section->size); | |
3146 | } | |
3147 | ||
699733f6 | 3148 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3149 | entry syms. Also generate @plt symbols for the glink branch table. |
3150 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3151 | |
3152 | static long | |
a7535cf3 AM |
3153 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3154 | long static_count, asymbol **static_syms, | |
3155 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3156 | asymbol **ret) |
90e3cdf2 JJ |
3157 | { |
3158 | asymbol *s; | |
699733f6 AM |
3159 | long i; |
3160 | long count; | |
90e3cdf2 | 3161 | char *names; |
a7535cf3 | 3162 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3163 | asection *opd = NULL; |
90e3cdf2 | 3164 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3165 | asymbol **syms; |
ee67d69a | 3166 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3167 | |
3168 | *ret = NULL; | |
3169 | ||
ee67d69a AM |
3170 | if (abi < 2) |
3171 | { | |
3172 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3173 | if (opd == NULL && abi == 1) | |
3174 | return 0; | |
3175 | } | |
90e3cdf2 | 3176 | |
a7535cf3 | 3177 | symcount = static_count; |
c9727e01 | 3178 | if (!relocatable) |
a7535cf3 | 3179 | symcount += dyn_count; |
90e3cdf2 | 3180 | if (symcount == 0) |
c9727e01 | 3181 | return 0; |
90e3cdf2 | 3182 | |
a7535cf3 AM |
3183 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3184 | if (syms == NULL) | |
7356fed5 | 3185 | return -1; |
a7535cf3 AM |
3186 | |
3187 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3188 | { | |
3189 | /* Use both symbol tables. */ | |
3190 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3191 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3192 | } | |
3193 | else if (!relocatable && static_count == 0) | |
3194 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3195 | else | |
3196 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3197 | ||
90e3cdf2 | 3198 | synthetic_relocatable = relocatable; |
595da8c5 | 3199 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3200 | |
c9727e01 AM |
3201 | if (!relocatable && symcount > 1) |
3202 | { | |
3203 | long j; | |
3204 | /* Trim duplicate syms, since we may have merged the normal and | |
3205 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3206 | different values, so trim any with the same value. */ |
c9727e01 AM |
3207 | for (i = 1, j = 1; i < symcount; ++i) |
3208 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3209 | != syms[i]->value + syms[i]->section->vma) | |
3210 | syms[j++] = syms[i]; | |
3211 | symcount = j; | |
3212 | } | |
3213 | ||
699733f6 | 3214 | i = 0; |
ffcfec52 | 3215 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3216 | ++i; |
3217 | codesecsym = i; | |
90e3cdf2 | 3218 | |
699733f6 AM |
3219 | for (; i < symcount; ++i) |
3220 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3221 | != (SEC_CODE | SEC_ALLOC)) | |
3222 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3223 | break; | |
3224 | codesecsymend = i; | |
90e3cdf2 | 3225 | |
699733f6 AM |
3226 | for (; i < symcount; ++i) |
3227 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3228 | break; | |
3229 | secsymend = i; | |
90e3cdf2 | 3230 | |
699733f6 | 3231 | for (; i < symcount; ++i) |
ffcfec52 | 3232 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3233 | break; |
3234 | opdsymend = i; | |
90e3cdf2 | 3235 | |
699733f6 AM |
3236 | for (; i < symcount; ++i) |
3237 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3238 | != (SEC_CODE | SEC_ALLOC)) | |
3239 | break; | |
3240 | symcount = i; | |
3241 | ||
c9727e01 | 3242 | count = 0; |
90e3cdf2 | 3243 | |
699733f6 | 3244 | if (relocatable) |
90e3cdf2 | 3245 | { |
699733f6 AM |
3246 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3247 | arelent *r; | |
3248 | size_t size; | |
3249 | long relcount; | |
90e3cdf2 | 3250 | |
468392fb AM |
3251 | if (opdsymend == secsymend) |
3252 | goto done; | |
3253 | ||
699733f6 | 3254 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3255 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3256 | if (relcount == 0) |
c9727e01 | 3257 | goto done; |
90e3cdf2 | 3258 | |
7356fed5 AM |
3259 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3260 | { | |
3261 | count = -1; | |
3262 | goto done; | |
3263 | } | |
3264 | ||
699733f6 | 3265 | size = 0; |
595da8c5 | 3266 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3267 | { |
3268 | asymbol *sym; | |
90e3cdf2 | 3269 | |
595da8c5 | 3270 | while (r < opd->relocation + relcount |
699733f6 AM |
3271 | && r->address < syms[i]->value + opd->vma) |
3272 | ++r; | |
90e3cdf2 | 3273 | |
595da8c5 | 3274 | if (r == opd->relocation + relcount) |
699733f6 | 3275 | break; |
90e3cdf2 | 3276 | |
699733f6 AM |
3277 | if (r->address != syms[i]->value + opd->vma) |
3278 | continue; | |
90e3cdf2 | 3279 | |
699733f6 AM |
3280 | if (r->howto->type != R_PPC64_ADDR64) |
3281 | continue; | |
90e3cdf2 | 3282 | |
699733f6 AM |
3283 | sym = *r->sym_ptr_ptr; |
3284 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3285 | sym->section->id, sym->value + r->addend)) | |
3286 | { | |
3287 | ++count; | |
3288 | size += sizeof (asymbol); | |
3289 | size += strlen (syms[i]->name) + 2; | |
3290 | } | |
3291 | } | |
90e3cdf2 | 3292 | |
c4b0b099 AM |
3293 | if (size == 0) |
3294 | goto done; | |
699733f6 AM |
3295 | s = *ret = bfd_malloc (size); |
3296 | if (s == NULL) | |
3297 | { | |
7356fed5 | 3298 | count = -1; |
c9727e01 | 3299 | goto done; |
699733f6 | 3300 | } |
90e3cdf2 | 3301 | |
699733f6 | 3302 | names = (char *) (s + count); |
90e3cdf2 | 3303 | |
595da8c5 | 3304 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3305 | { |
699733f6 | 3306 | asymbol *sym; |
90e3cdf2 | 3307 | |
595da8c5 | 3308 | while (r < opd->relocation + relcount |
699733f6 AM |
3309 | && r->address < syms[i]->value + opd->vma) |
3310 | ++r; | |
90e3cdf2 | 3311 | |
595da8c5 | 3312 | if (r == opd->relocation + relcount) |
699733f6 AM |
3313 | break; |
3314 | ||
3315 | if (r->address != syms[i]->value + opd->vma) | |
3316 | continue; | |
3317 | ||
3318 | if (r->howto->type != R_PPC64_ADDR64) | |
3319 | continue; | |
90e3cdf2 | 3320 | |
699733f6 AM |
3321 | sym = *r->sym_ptr_ptr; |
3322 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3323 | sym->section->id, sym->value + r->addend)) | |
3324 | { | |
3325 | size_t len; | |
3326 | ||
3327 | *s = *syms[i]; | |
6ba2a415 | 3328 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3329 | s->section = sym->section; |
3330 | s->value = sym->value + r->addend; | |
3331 | s->name = names; | |
3332 | *names++ = '.'; | |
3333 | len = strlen (syms[i]->name); | |
3334 | memcpy (names, syms[i]->name, len + 1); | |
3335 | names += len + 1; | |
6f610d07 UW |
3336 | /* Have udata.p point back to the original symbol this |
3337 | synthetic symbol was derived from. */ | |
3338 | s->udata.p = syms[i]; | |
699733f6 AM |
3339 | s++; |
3340 | } | |
3341 | } | |
3342 | } | |
3343 | else | |
90e3cdf2 | 3344 | { |
468392fb | 3345 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3346 | bfd_byte *contents = NULL; |
699733f6 | 3347 | size_t size; |
468392fb AM |
3348 | long plt_count = 0; |
3349 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3350 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3351 | arelent *p; | |
90e3cdf2 | 3352 | |
ee67d69a | 3353 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3354 | { |
c4b0b099 AM |
3355 | free_contents_and_exit_err: |
3356 | count = -1; | |
ee67d69a | 3357 | free_contents_and_exit: |
699733f6 | 3358 | if (contents) |
ee67d69a | 3359 | free (contents); |
c9727e01 | 3360 | goto done; |
699733f6 | 3361 | } |
90e3cdf2 | 3362 | |
699733f6 AM |
3363 | size = 0; |
3364 | for (i = secsymend; i < opdsymend; ++i) | |
3365 | { | |
3366 | bfd_vma ent; | |
90e3cdf2 | 3367 | |
5ef11c02 AM |
3368 | /* Ignore bogus symbols. */ |
3369 | if (syms[i]->value > opd->size - 8) | |
3370 | continue; | |
3371 | ||
699733f6 AM |
3372 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3373 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3374 | { | |
3375 | ++count; | |
3376 | size += sizeof (asymbol); | |
3377 | size += strlen (syms[i]->name) + 2; | |
3378 | } | |
3379 | } | |
90e3cdf2 | 3380 | |
468392fb | 3381 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3382 | if (dyn_count != 0 |
3383 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3384 | { |
3385 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3386 | size_t extdynsize; | |
3387 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3388 | ||
3389 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3390 | goto free_contents_and_exit_err; |
468392fb AM |
3391 | |
3392 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3393 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3394 | ||
3395 | extdyn = dynbuf; | |
3396 | extdynend = extdyn + dynamic->size; | |
3397 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3398 | { | |
3399 | Elf_Internal_Dyn dyn; | |
3400 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3401 | ||
3402 | if (dyn.d_tag == DT_NULL) | |
3403 | break; | |
3404 | ||
3405 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3406 | { | |
b9e5796b AM |
3407 | /* The first glink stub starts at offset 32; see |
3408 | comment in ppc64_elf_finish_dynamic_sections. */ | |
3409 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
468392fb AM |
3410 | /* The .glink section usually does not survive the final |
3411 | link; search for the section (usually .text) where the | |
3412 | glink stubs now reside. */ | |
3413 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3414 | &glink_vma); | |
3415 | break; | |
3416 | } | |
3417 | } | |
3418 | ||
3419 | free (dynbuf); | |
3420 | } | |
3421 | ||
3422 | if (glink != NULL) | |
3423 | { | |
3424 | /* Determine __glink trampoline by reading the relative branch | |
3425 | from the first glink stub. */ | |
3426 | bfd_byte buf[4]; | |
b9e5796b AM |
3427 | unsigned int off = 0; |
3428 | ||
3429 | while (bfd_get_section_contents (abfd, glink, buf, | |
3430 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3431 | { |
3432 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3433 | insn ^= B_DOT; | |
3434 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3435 | { |
3436 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3437 | break; | |
3438 | } | |
3439 | off += 4; | |
3440 | if (off > 4) | |
3441 | break; | |
468392fb AM |
3442 | } |
3443 | ||
3444 | if (resolv_vma) | |
3445 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3446 | |
066ee829 AM |
3447 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3448 | if (relplt != NULL) | |
3449 | { | |
3450 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3451 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
c4b0b099 | 3452 | goto free_contents_and_exit_err; |
68ffbac6 | 3453 | |
066ee829 AM |
3454 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3455 | size += plt_count * sizeof (asymbol); | |
468392fb | 3456 | |
066ee829 AM |
3457 | p = relplt->relocation; |
3458 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3459 | { |
3460 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3461 | if (p->addend != 0) | |
3462 | size += sizeof ("+0x") - 1 + 16; | |
3463 | } | |
066ee829 | 3464 | } |
468392fb AM |
3465 | } |
3466 | ||
c4b0b099 AM |
3467 | if (size == 0) |
3468 | goto free_contents_and_exit; | |
699733f6 AM |
3469 | s = *ret = bfd_malloc (size); |
3470 | if (s == NULL) | |
c4b0b099 | 3471 | goto free_contents_and_exit_err; |
90e3cdf2 | 3472 | |
468392fb | 3473 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3474 | |
699733f6 | 3475 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3476 | { |
699733f6 | 3477 | bfd_vma ent; |
90e3cdf2 | 3478 | |
5ef11c02 AM |
3479 | if (syms[i]->value > opd->size - 8) |
3480 | continue; | |
3481 | ||
699733f6 AM |
3482 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3483 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3484 | { |
c9727e01 | 3485 | long lo, hi; |
699733f6 | 3486 | size_t len; |
c9727e01 | 3487 | asection *sec = abfd->sections; |
90e3cdf2 | 3488 | |
699733f6 AM |
3489 | *s = *syms[i]; |
3490 | lo = codesecsym; | |
3491 | hi = codesecsymend; | |
3492 | while (lo < hi) | |
3493 | { | |
c9727e01 | 3494 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3495 | if (syms[mid]->section->vma < ent) |
3496 | lo = mid + 1; | |
3497 | else if (syms[mid]->section->vma > ent) | |
3498 | hi = mid; | |
3499 | else | |
c9727e01 AM |
3500 | { |
3501 | sec = syms[mid]->section; | |
3502 | break; | |
3503 | } | |
699733f6 AM |
3504 | } |
3505 | ||
c9727e01 | 3506 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3507 | sec = syms[lo - 1]->section; |
699733f6 AM |
3508 | |
3509 | for (; sec != NULL; sec = sec->next) | |
3510 | { | |
3511 | if (sec->vma > ent) | |
3512 | break; | |
63524580 JK |
3513 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3514 | info file. */ | |
3515 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3516 | break; |
3517 | if ((sec->flags & SEC_CODE) != 0) | |
3518 | s->section = sec; | |
3519 | } | |
6ba2a415 | 3520 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3521 | s->value = ent - s->section->vma; |
3522 | s->name = names; | |
3523 | *names++ = '.'; | |
3524 | len = strlen (syms[i]->name); | |
3525 | memcpy (names, syms[i]->name, len + 1); | |
3526 | names += len + 1; | |
6f610d07 UW |
3527 | /* Have udata.p point back to the original symbol this |
3528 | synthetic symbol was derived from. */ | |
3529 | s->udata.p = syms[i]; | |
699733f6 | 3530 | s++; |
90e3cdf2 | 3531 | } |
90e3cdf2 | 3532 | } |
699733f6 | 3533 | free (contents); |
468392fb AM |
3534 | |
3535 | if (glink != NULL && relplt != NULL) | |
3536 | { | |
3537 | if (resolv_vma) | |
3538 | { | |
3539 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3540 | memset (s, 0, sizeof *s); |
468392fb | 3541 | s->the_bfd = abfd; |
6ba2a415 | 3542 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3543 | s->section = glink; |
3544 | s->value = resolv_vma - glink->vma; | |
3545 | s->name = names; | |
3546 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3547 | names += sizeof ("__glink_PLTresolve"); | |
3548 | s++; | |
3549 | count++; | |
3550 | } | |
3551 | ||
3552 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3553 | stub rather than on the glink branch table entry. The | |
3554 | objdump disassembler would then use a sensible symbol | |
3555 | name on plt calls. The difficulty in doing so is | |
3556 | a) finding the stubs, and, | |
3557 | b) matching stubs against plt entries, and, | |
3558 | c) there can be multiple stubs for a given plt entry. | |
3559 | ||
3560 | Solving (a) could be done by code scanning, but older | |
3561 | ppc64 binaries used different stubs to current code. | |
3562 | (b) is the tricky one since you need to known the toc | |
3563 | pointer for at least one function that uses a pic stub to | |
3564 | be able to calculate the plt address referenced. | |
3565 | (c) means gdb would need to set multiple breakpoints (or | |
3566 | find the glink branch itself) when setting breakpoints | |
3567 | for pending shared library loads. */ | |
3568 | p = relplt->relocation; | |
3569 | for (i = 0; i < plt_count; i++, p++) | |
3570 | { | |
3571 | size_t len; | |
3572 | ||
3573 | *s = **p->sym_ptr_ptr; | |
3574 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3575 | we are defining a symbol, ensure one of them is set. */ | |
3576 | if ((s->flags & BSF_LOCAL) == 0) | |
3577 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3578 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3579 | s->section = glink; |
3580 | s->value = glink_vma - glink->vma; | |
3581 | s->name = names; | |
3582 | s->udata.p = NULL; | |
3583 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3584 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3585 | names += len; | |
e054468f AM |
3586 | if (p->addend != 0) |
3587 | { | |
3588 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3589 | names += sizeof ("+0x") - 1; | |
3590 | bfd_sprintf_vma (abfd, names, p->addend); | |
3591 | names += strlen (names); | |
3592 | } | |
468392fb AM |
3593 | memcpy (names, "@plt", sizeof ("@plt")); |
3594 | names += sizeof ("@plt"); | |
3595 | s++; | |
b9e5796b AM |
3596 | if (abi < 2) |
3597 | { | |
3598 | glink_vma += 8; | |
3599 | if (i >= 0x8000) | |
3600 | glink_vma += 4; | |
3601 | } | |
3602 | else | |
468392fb AM |
3603 | glink_vma += 4; |
3604 | } | |
3605 | count += plt_count; | |
3606 | } | |
90e3cdf2 JJ |
3607 | } |
3608 | ||
c9727e01 | 3609 | done: |
a7535cf3 | 3610 | free (syms); |
90e3cdf2 JJ |
3611 | return count; |
3612 | } | |
5bd4f169 | 3613 | \f |
65f38f15 AM |
3614 | /* The following functions are specific to the ELF linker, while |
3615 | functions above are used generally. Those named ppc64_elf_* are | |
3616 | called by the main ELF linker code. They appear in this file more | |
3617 | or less in the order in which they are called. eg. | |
3618 | ppc64_elf_check_relocs is called early in the link process, | |
3619 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3620 | called. |
3621 | ||
3622 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3623 | functions have both a function code symbol and a function descriptor | |
3624 | symbol. A call to foo in a relocatable object file looks like: | |
3625 | ||
3626 | . .text | |
3627 | . x: | |
3628 | . bl .foo | |
3629 | . nop | |
3630 | ||
3631 | The function definition in another object file might be: | |
3632 | ||
3633 | . .section .opd | |
3634 | . foo: .quad .foo | |
3635 | . .quad .TOC.@tocbase | |
3636 | . .quad 0 | |
3637 | . | |
3638 | . .text | |
3639 | . .foo: blr | |
3640 | ||
3641 | When the linker resolves the call during a static link, the branch | |
3642 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3643 | If the function definition is in a shared library, things are a little | |
3644 | different: The call goes via a plt call stub, the opd information gets | |
3645 | copied to the plt, and the linker patches the nop. | |
3646 | ||
3647 | . x: | |
3648 | . bl .foo_stub | |
3649 | . ld 2,40(1) | |
3650 | . | |
3651 | . | |
3652 | . .foo_stub: | |
71a39c98 AM |
3653 | . std 2,40(1) # in practice, the call stub |
3654 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3655 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3656 | . ld 12,0(11) | |
3657 | . ld 2,8(11) | |
3658 | . mtctr 12 | |
3659 | . ld 11,16(11) | |
e86ce104 AM |
3660 | . bctr |
3661 | . | |
3662 | . .section .plt | |
3663 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3664 | ||
3665 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3666 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3667 | copying. | |
3668 | ||
3669 | What are the difficulties here? Well, firstly, the relocations | |
3670 | examined by the linker in check_relocs are against the function code | |
3671 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3672 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3673 | to carefully copy dynamic link information from one symbol to the other. | |
3674 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3675 | symbol as is normal for most other backends. We need foo dynamic | |
3676 | instead, at least for an application final link. However, when | |
3677 | creating a shared library containing foo, we need to have both symbols | |
3678 | dynamic so that references to .foo are satisfied during the early | |
3679 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3680 | definition from some other object, eg. a static library. |
3681 | ||
3682 | Update: As of August 2004, we support a new convention. Function | |
3683 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3684 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3685 | |
1d483afe | 3686 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3687 | selects those that must be copied when linking a shared library, |
3688 | even when the symbol is local. */ | |
65f38f15 | 3689 | |
1d483afe AM |
3690 | static int |
3691 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3692 | enum elf_ppc64_reloc_type r_type) | |
3693 | { | |
3694 | switch (r_type) | |
3695 | { | |
3696 | default: | |
3697 | return 1; | |
3698 | ||
3699 | case R_PPC64_REL32: | |
3700 | case R_PPC64_REL64: | |
3701 | case R_PPC64_REL30: | |
3702 | return 0; | |
3703 | ||
3704 | case R_PPC64_TPREL16: | |
3705 | case R_PPC64_TPREL16_LO: | |
3706 | case R_PPC64_TPREL16_HI: | |
3707 | case R_PPC64_TPREL16_HA: | |
3708 | case R_PPC64_TPREL16_DS: | |
3709 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3710 | case R_PPC64_TPREL16_HIGH: |
3711 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3712 | case R_PPC64_TPREL16_HIGHER: |
3713 | case R_PPC64_TPREL16_HIGHERA: | |
3714 | case R_PPC64_TPREL16_HIGHEST: | |
3715 | case R_PPC64_TPREL16_HIGHESTA: | |
3716 | case R_PPC64_TPREL64: | |
0e1862bb | 3717 | return !bfd_link_executable (info); |
1d483afe AM |
3718 | } |
3719 | } | |
65f38f15 | 3720 | |
f4656909 AM |
3721 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3722 | copying dynamic variables from a shared lib into an app's dynbss | |
3723 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3724 | shared lib. With code that gcc generates, it's vital that this be |
3725 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3726 | the address of a function descriptor, which resides in the .opd | |
3727 | section. gcc uses the descriptor directly rather than going via the | |
3728 | GOT as some other ABI's do, which means that initialized function | |
3729 | pointers must reference the descriptor. Thus, a function pointer | |
3730 | initialized to the address of a function in a shared library will | |
3731 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3732 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3733 | presents a problem as a plt entry for that function is also |
3734 | initialized from the function descriptor symbol and the copy reloc | |
3735 | may not be initialized first. */ | |
a23b6845 | 3736 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3737 | |
721956f4 | 3738 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3739 | string. */ |
3740 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3741 | |
3742 | /* Linker stubs. | |
3743 | ppc_stub_long_branch: | |
3744 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3745 | destination, but a 24 bit branch in a stub section will reach. | |
3746 | . b dest | |
3747 | ||
3748 | ppc_stub_plt_branch: | |
3749 | Similar to the above, but a 24 bit branch in the stub section won't | |
3750 | reach its destination. | |
71a39c98 AM |
3751 | . addis %r11,%r2,xxx@toc@ha |
3752 | . ld %r12,xxx@toc@l(%r11) | |
3753 | . mtctr %r12 | |
721956f4 AM |
3754 | . bctr |
3755 | ||
3756 | ppc_stub_plt_call: | |
2c66dc6c AM |
3757 | Used to call a function in a shared library. If it so happens that |
3758 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3759 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3760 | . std %r2,40(%r1) |
71a39c98 AM |
3761 | . addis %r11,%r2,xxx@toc@ha |
3762 | . ld %r12,xxx+0@toc@l(%r11) | |
3763 | . mtctr %r12 | |
3764 | . ld %r2,xxx+8@toc@l(%r11) | |
3765 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3766 | . bctr |
ad8e1ba5 AM |
3767 | |
3768 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3769 | code to adjust the value and save r2 to support multiple toc sections. | |
3770 | A ppc_stub_long_branch with an r2 offset looks like: | |
3771 | . std %r2,40(%r1) | |
3772 | . addis %r2,%r2,off@ha | |
3773 | . addi %r2,%r2,off@l | |
3774 | . b dest | |
3775 | ||
3776 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3777 | . std %r2,40(%r1) | |
71a39c98 AM |
3778 | . addis %r11,%r2,xxx@toc@ha |
3779 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3780 | . addis %r2,%r2,off@ha |
3781 | . addi %r2,%r2,off@l | |
71a39c98 | 3782 | . mtctr %r12 |
ad8e1ba5 | 3783 | . bctr |
ac2df442 AM |
3784 | |
3785 | In cases where the "addis" instruction would add zero, the "addis" is | |
3786 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3787 | */ |
3788 | ||
3789 | enum ppc_stub_type { | |
3790 | ppc_stub_none, | |
3791 | ppc_stub_long_branch, | |
ad8e1ba5 | 3792 | ppc_stub_long_branch_r2off, |
721956f4 | 3793 | ppc_stub_plt_branch, |
ad8e1ba5 | 3794 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3795 | ppc_stub_plt_call, |
7341d5e2 | 3796 | ppc_stub_plt_call_r2save, |
a4b6fadd AM |
3797 | ppc_stub_global_entry, |
3798 | ppc_stub_save_res | |
721956f4 AM |
3799 | }; |
3800 | ||
6f20ed8a AM |
3801 | /* Information on stub grouping. */ |
3802 | struct map_stub | |
3803 | { | |
3804 | /* The stub section. */ | |
3805 | asection *stub_sec; | |
3806 | /* This is the section to which stubs in the group will be attached. */ | |
3807 | asection *link_sec; | |
a4b6fadd AM |
3808 | /* Next group. */ |
3809 | struct map_stub *next; | |
3810 | /* Whether to emit a copy of register save/restore functions in this | |
3811 | group. */ | |
3812 | int needs_save_res; | |
6f20ed8a AM |
3813 | }; |
3814 | ||
721956f4 AM |
3815 | struct ppc_stub_hash_entry { |
3816 | ||
3817 | /* Base hash table entry structure. */ | |
3818 | struct bfd_hash_entry root; | |
3819 | ||
ad8e1ba5 AM |
3820 | enum ppc_stub_type stub_type; |
3821 | ||
6f20ed8a AM |
3822 | /* Group information. */ |
3823 | struct map_stub *group; | |
721956f4 AM |
3824 | |
3825 | /* Offset within stub_sec of the beginning of this stub. */ | |
3826 | bfd_vma stub_offset; | |
3827 | ||
3828 | /* Given the symbol's value and its section we can determine its final | |
3829 | value when building the stubs (so the stub knows where to jump. */ | |
3830 | bfd_vma target_value; | |
3831 | asection *target_section; | |
3832 | ||
721956f4 AM |
3833 | /* The symbol table entry, if any, that this was derived from. */ |
3834 | struct ppc_link_hash_entry *h; | |
e054468f | 3835 | struct plt_entry *plt_ent; |
721956f4 | 3836 | |
6911b7dc AM |
3837 | /* Symbol st_other. */ |
3838 | unsigned char other; | |
721956f4 AM |
3839 | }; |
3840 | ||
3841 | struct ppc_branch_hash_entry { | |
3842 | ||
3843 | /* Base hash table entry structure. */ | |
3844 | struct bfd_hash_entry root; | |
3845 | ||
c456f082 | 3846 | /* Offset within branch lookup table. */ |
721956f4 AM |
3847 | unsigned int offset; |
3848 | ||
3849 | /* Generation marker. */ | |
3850 | unsigned int iter; | |
3851 | }; | |
65f38f15 | 3852 | |
19e08130 AM |
3853 | /* Used to track dynamic relocations for local symbols. */ |
3854 | struct ppc_dyn_relocs | |
3855 | { | |
3856 | struct ppc_dyn_relocs *next; | |
3857 | ||
3858 | /* The input section of the reloc. */ | |
3859 | asection *sec; | |
3860 | ||
3861 | /* Total number of relocs copied for the input section. */ | |
3862 | unsigned int count : 31; | |
3863 | ||
3864 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3865 | unsigned int ifunc : 1; | |
3866 | }; | |
3867 | ||
65f38f15 AM |
3868 | struct ppc_link_hash_entry |
3869 | { | |
3870 | struct elf_link_hash_entry elf; | |
3871 | ||
b3fac117 AM |
3872 | union { |
3873 | /* A pointer to the most recently used stub hash entry against this | |
3874 | symbol. */ | |
3875 | struct ppc_stub_hash_entry *stub_cache; | |
3876 | ||
3877 | /* A pointer to the next symbol starting with a '.' */ | |
3878 | struct ppc_link_hash_entry *next_dot_sym; | |
3879 | } u; | |
721956f4 | 3880 | |
65f38f15 | 3881 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3882 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3883 | |
721956f4 | 3884 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3885 | struct ppc_link_hash_entry *oh; |
721956f4 | 3886 | |
e86ce104 AM |
3887 | /* Flag function code and descriptor symbols. */ |
3888 | unsigned int is_func:1; | |
3889 | unsigned int is_func_descriptor:1; | |
908b32fc | 3890 | unsigned int fake:1; |
411e1bfb | 3891 | |
c5614fa4 AM |
3892 | /* Whether global opd/toc sym has been adjusted or not. |
3893 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3894 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3895 | unsigned int adjust_done:1; |
3896 | ||
99877b66 AM |
3897 | /* Set if we twiddled this symbol to weak at some stage. */ |
3898 | unsigned int was_undefined:1; | |
3899 | ||
a4b6fadd AM |
3900 | /* Set if this is an out-of-line register save/restore function, |
3901 | with non-standard calling convention. */ | |
3902 | unsigned int save_res:1; | |
3903 | ||
411e1bfb | 3904 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3905 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3906 | corresponding relocs are encountered during check_relocs. | |
3907 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3908 | indicate the corresponding GOT entry type is not needed. | |
3909 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3910 | a TPREL one. We use a separate flag rather than setting TPREL | |
3911 | just for convenience in distinguishing the two cases. */ | |
3912 | #define TLS_GD 1 /* GD reloc. */ | |
3913 | #define TLS_LD 2 /* LD reloc. */ | |
3914 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3915 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3916 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3917 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3918 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3919 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3920 | unsigned char tls_mask; |
65f38f15 AM |
3921 | }; |
3922 | ||
3923 | /* ppc64 ELF linker hash table. */ | |
3924 | ||
3925 | struct ppc_link_hash_table | |
3926 | { | |
3927 | struct elf_link_hash_table elf; | |
3928 | ||
721956f4 AM |
3929 | /* The stub hash table. */ |
3930 | struct bfd_hash_table stub_hash_table; | |
3931 | ||
3932 | /* Another hash table for plt_branch stubs. */ | |
3933 | struct bfd_hash_table branch_hash_table; | |
3934 | ||
3b421ab3 AM |
3935 | /* Hash table for function prologue tocsave. */ |
3936 | htab_t tocsave_htab; | |
3937 | ||
e7d1c40c AM |
3938 | /* Various options and other info passed from the linker. */ |
3939 | struct ppc64_elf_params *params; | |
721956f4 | 3940 | |
6f20ed8a AM |
3941 | /* The size of sec_info below. */ |
3942 | unsigned int sec_info_arr_size; | |
3943 | ||
3944 | /* Per-section array of extra section info. Done this way rather | |
3945 | than as part of ppc64_elf_section_data so we have the info for | |
3946 | non-ppc64 sections. */ | |
3947 | struct | |
3948 | { | |
3949 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3950 | bfd_vma toc_off; |
6f20ed8a AM |
3951 | |
3952 | union | |
3953 | { | |
3954 | /* The section group that this section belongs to. */ | |
3955 | struct map_stub *group; | |
3956 | /* A temp section list pointer. */ | |
3957 | asection *list; | |
3958 | } u; | |
3959 | } *sec_info; | |
721956f4 | 3960 | |
a4b6fadd AM |
3961 | /* Linked list of groups. */ |
3962 | struct map_stub *group; | |
3963 | ||
ad8e1ba5 AM |
3964 | /* Temp used when calculating TOC pointers. */ |
3965 | bfd_vma toc_curr; | |
bf102f86 AM |
3966 | bfd *toc_bfd; |
3967 | asection *toc_first_sec; | |
ad8e1ba5 | 3968 | |
b3fac117 AM |
3969 | /* Used when adding symbols. */ |
3970 | struct ppc_link_hash_entry *dot_syms; | |
3971 | ||
33e44f2e | 3972 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 AM |
3973 | asection *dynbss; |
3974 | asection *relbss; | |
3975 | asection *glink; | |
82bd7b59 | 3976 | asection *sfpr; |
4ce794b7 AM |
3977 | asection *brlt; |
3978 | asection *relbrlt; | |
58d180e8 | 3979 | asection *glink_eh_frame; |
ec338859 | 3980 | |
8387904d AM |
3981 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3982 | struct ppc_link_hash_entry *tls_get_addr; | |
3983 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3984 | |
927be08e AM |
3985 | /* The size of reliplt used by got entry relocs. */ |
3986 | bfd_size_type got_reli_size; | |
3987 | ||
9b5ecbd0 | 3988 | /* Statistics. */ |
7341d5e2 | 3989 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3990 | |
ee75fd95 AM |
3991 | /* Number of stubs against global syms. */ |
3992 | unsigned long stub_globals; | |
3993 | ||
ee67d69a AM |
3994 | /* Set if we're linking code with function descriptors. */ |
3995 | unsigned int opd_abi:1; | |
3996 | ||
4c52953f | 3997 | /* Support for multiple toc sections. */ |
33c0ec9d | 3998 | unsigned int do_multi_toc:1; |
4c52953f | 3999 | unsigned int multi_toc_needed:1; |
927be08e | 4000 | unsigned int second_toc_pass:1; |
67f0cbdb | 4001 | unsigned int do_toc_opt:1; |
4c52953f | 4002 | |
5d1634d7 | 4003 | /* Set on error. */ |
99877b66 | 4004 | unsigned int stub_error:1; |
721956f4 | 4005 | |
f6c7c3e8 | 4006 | /* Temp used by ppc64_elf_before_check_relocs. */ |
99877b66 | 4007 | unsigned int twiddled_syms:1; |
721956f4 AM |
4008 | |
4009 | /* Incremented every time we size stubs. */ | |
4010 | unsigned int stub_iteration; | |
5d1634d7 | 4011 | |
87d72d41 AM |
4012 | /* Small local sym cache. */ |
4013 | struct sym_cache sym_cache; | |
65f38f15 AM |
4014 | }; |
4015 | ||
4c52953f AM |
4016 | /* Rename some of the generic section flags to better document how they |
4017 | are used here. */ | |
b0dddeec AM |
4018 | |
4019 | /* Nonzero if this section has TLS related relocations. */ | |
4020 | #define has_tls_reloc sec_flg0 | |
4021 | ||
4022 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
4023 | #define has_tls_get_addr_call sec_flg1 | |
4024 | ||
4025 | /* Nonzero if this section has any toc or got relocs. */ | |
4026 | #define has_toc_reloc sec_flg2 | |
4027 | ||
4028 | /* Nonzero if this section has a call to another section that uses | |
4029 | the toc or got. */ | |
d77c8a4b | 4030 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4031 | |
4032 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4033 | #define call_check_in_progress sec_flg4 |
70cc837d | 4034 | #define call_check_done sec_flg5 |
4c52953f | 4035 | |
65f38f15 AM |
4036 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4037 | ||
4038 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4039 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4040 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4041 | |
721956f4 AM |
4042 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4043 | ((struct ppc_stub_hash_entry *) \ | |
4044 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4045 | ||
4046 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4047 | ((struct ppc_branch_hash_entry *) \ | |
4048 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4049 | ||
4050 | /* Create an entry in the stub hash table. */ | |
4051 | ||
4052 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4053 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4054 | struct bfd_hash_table *table, | |
4055 | const char *string) | |
721956f4 AM |
4056 | { |
4057 | /* Allocate the structure if it has not already been allocated by a | |
4058 | subclass. */ | |
4059 | if (entry == NULL) | |
4060 | { | |
4061 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4062 | if (entry == NULL) | |
4063 | return entry; | |
4064 | } | |
4065 | ||
4066 | /* Call the allocation method of the superclass. */ | |
4067 | entry = bfd_hash_newfunc (entry, table, string); | |
4068 | if (entry != NULL) | |
4069 | { | |
4070 | struct ppc_stub_hash_entry *eh; | |
4071 | ||
4072 | /* Initialize the local fields. */ | |
4073 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4074 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4075 | eh->group = NULL; |
721956f4 AM |
4076 | eh->stub_offset = 0; |
4077 | eh->target_value = 0; | |
4078 | eh->target_section = NULL; | |
721956f4 | 4079 | eh->h = NULL; |
6911b7dc | 4080 | eh->plt_ent = NULL; |
6911b7dc | 4081 | eh->other = 0; |
721956f4 AM |
4082 | } |
4083 | ||
4084 | return entry; | |
4085 | } | |
4086 | ||
4087 | /* Create an entry in the branch hash table. */ | |
4088 | ||
4089 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4090 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4091 | struct bfd_hash_table *table, | |
4092 | const char *string) | |
721956f4 AM |
4093 | { |
4094 | /* Allocate the structure if it has not already been allocated by a | |
4095 | subclass. */ | |
4096 | if (entry == NULL) | |
4097 | { | |
4098 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4099 | if (entry == NULL) | |
4100 | return entry; | |
4101 | } | |
4102 | ||
4103 | /* Call the allocation method of the superclass. */ | |
4104 | entry = bfd_hash_newfunc (entry, table, string); | |
4105 | if (entry != NULL) | |
4106 | { | |
4107 | struct ppc_branch_hash_entry *eh; | |
4108 | ||
4109 | /* Initialize the local fields. */ | |
4110 | eh = (struct ppc_branch_hash_entry *) entry; | |
4111 | eh->offset = 0; | |
4112 | eh->iter = 0; | |
4113 | } | |
4114 | ||
4115 | return entry; | |
4116 | } | |
4117 | ||
65f38f15 AM |
4118 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4119 | ||
4120 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4121 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4122 | struct bfd_hash_table *table, | |
4123 | const char *string) | |
65f38f15 AM |
4124 | { |
4125 | /* Allocate the structure if it has not already been allocated by a | |
4126 | subclass. */ | |
4127 | if (entry == NULL) | |
4128 | { | |
4129 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4130 | if (entry == NULL) | |
4131 | return entry; | |
4132 | } | |
4133 | ||
4134 | /* Call the allocation method of the superclass. */ | |
4135 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4136 | if (entry != NULL) | |
4137 | { | |
4138 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4139 | ||
b3fac117 | 4140 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4141 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4142 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4143 | ||
4144 | /* When making function calls, old ABI code references function entry | |
4145 | points (dot symbols), while new ABI code references the function | |
4146 | descriptor symbol. We need to make any combination of reference and | |
4147 | definition work together, without breaking archive linking. | |
4148 | ||
4149 | For a defined function "foo" and an undefined call to "bar": | |
4150 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4151 | "bar" too). | |
4152 | A new object defines "foo" and references "bar". | |
4153 | ||
4154 | A new object thus has no problem with its undefined symbols being | |
4155 | satisfied by definitions in an old object. On the other hand, the | |
4156 | old object won't have ".bar" satisfied by a new object. | |
4157 | ||
4158 | Keep a list of newly added dot-symbols. */ | |
4159 | ||
4160 | if (string[0] == '.') | |
4161 | { | |
4162 | struct ppc_link_hash_table *htab; | |
4163 | ||
4164 | htab = (struct ppc_link_hash_table *) table; | |
4165 | eh->u.next_dot_sym = htab->dot_syms; | |
4166 | htab->dot_syms = eh; | |
4167 | } | |
65f38f15 AM |
4168 | } |
4169 | ||
4170 | return entry; | |
4171 | } | |
4172 | ||
3b421ab3 AM |
4173 | struct tocsave_entry { |
4174 | asection *sec; | |
4175 | bfd_vma offset; | |
4176 | }; | |
4177 | ||
4178 | static hashval_t | |
4179 | tocsave_htab_hash (const void *p) | |
4180 | { | |
4181 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4182 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
4183 | } | |
4184 | ||
4185 | static int | |
4186 | tocsave_htab_eq (const void *p1, const void *p2) | |
4187 | { | |
4188 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4189 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4190 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4191 | } | |
4192 | ||
68faa637 AM |
4193 | /* Destroy a ppc64 ELF linker hash table. */ |
4194 | ||
4195 | static void | |
d495ab0d | 4196 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4197 | { |
d495ab0d | 4198 | struct ppc_link_hash_table *htab; |
68faa637 | 4199 | |
d495ab0d | 4200 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4201 | if (htab->tocsave_htab) |
4202 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4203 | bfd_hash_table_free (&htab->branch_hash_table); |
4204 | bfd_hash_table_free (&htab->stub_hash_table); | |
4205 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4206 | } |
4207 | ||
65f38f15 AM |
4208 | /* Create a ppc64 ELF linker hash table. */ |
4209 | ||
4210 | static struct bfd_link_hash_table * | |
4ce794b7 | 4211 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4212 | { |
4213 | struct ppc_link_hash_table *htab; | |
4214 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4215 | ||
4ce794b7 | 4216 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4217 | if (htab == NULL) |
4218 | return NULL; | |
4219 | ||
66eb6687 | 4220 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4221 | sizeof (struct ppc_link_hash_entry), |
4222 | PPC64_ELF_DATA)) | |
65f38f15 | 4223 | { |
e2d34d7d | 4224 | free (htab); |
65f38f15 AM |
4225 | return NULL; |
4226 | } | |
4227 | ||
721956f4 | 4228 | /* Init the stub hash table too. */ |
66eb6687 AM |
4229 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4230 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4231 | { |
d495ab0d | 4232 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4233 | return NULL; |
4234 | } | |
721956f4 AM |
4235 | |
4236 | /* And the branch hash table. */ | |
66eb6687 AM |
4237 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4238 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4239 | { |
4240 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4241 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4242 | return NULL; |
4243 | } | |
721956f4 | 4244 | |
3b421ab3 AM |
4245 | htab->tocsave_htab = htab_try_create (1024, |
4246 | tocsave_htab_hash, | |
4247 | tocsave_htab_eq, | |
4248 | NULL); | |
4249 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4250 | { |
d495ab0d | 4251 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4252 | return NULL; |
4253 | } | |
d495ab0d | 4254 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4255 | |
3254fd24 AM |
4256 | /* Initializing two fields of the union is just cosmetic. We really |
4257 | only care about glist, but when compiled on a 32-bit host the | |
4258 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4259 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4260 | htab->elf.init_got_refcount.refcount = 0; |
4261 | htab->elf.init_got_refcount.glist = NULL; | |
4262 | htab->elf.init_plt_refcount.refcount = 0; | |
4263 | htab->elf.init_plt_refcount.glist = NULL; | |
4264 | htab->elf.init_got_offset.offset = 0; | |
4265 | htab->elf.init_got_offset.glist = NULL; | |
4266 | htab->elf.init_plt_offset.offset = 0; | |
4267 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4268 | |
65f38f15 AM |
4269 | return &htab->elf.root; |
4270 | } | |
4271 | ||
bfeb4a28 AM |
4272 | /* Create sections for linker generated code. */ |
4273 | ||
4274 | static bfd_boolean | |
4275 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4276 | { | |
4277 | struct ppc_link_hash_table *htab; | |
4278 | flagword flags; | |
4279 | ||
4280 | htab = ppc_hash_table (info); | |
4281 | ||
4282 | /* Create .sfpr for code to save and restore fp regs. */ | |
4283 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4284 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4285 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4286 | flags); | |
4287 | if (htab->sfpr == NULL | |
4288 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4289 | return FALSE; | |
4290 | ||
4291 | /* Create .glink for lazy dynamic linking support. */ | |
4292 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4293 | flags); | |
4294 | if (htab->glink == NULL | |
4295 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4296 | return FALSE; | |
4297 | ||
4298 | if (!info->no_ld_generated_unwind_info) | |
4299 | { | |
4300 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4301 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4302 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4303 | ".eh_frame", | |
4304 | flags); | |
4305 | if (htab->glink_eh_frame == NULL | |
4306 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4307 | return FALSE; | |
4308 | } | |
4309 | ||
4310 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4311 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4312 | if (htab->elf.iplt == NULL | |
4313 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4314 | return FALSE; |
4315 | ||
4316 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4317 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4318 | htab->elf.irelplt |
4319 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4320 | if (htab->elf.irelplt == NULL | |
4321 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4322 | return FALSE; |
4323 | ||
4324 | /* Create branch lookup table for plt_branch stubs. */ | |
4325 | flags = (SEC_ALLOC | SEC_LOAD | |
4326 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4327 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4328 | flags); | |
4329 | if (htab->brlt == NULL | |
4330 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4331 | return FALSE; | |
4332 | ||
0e1862bb | 4333 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4334 | return TRUE; |
4335 | ||
4336 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4337 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4338 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4339 | ".rela.branch_lt", | |
4340 | flags); | |
4341 | if (htab->relbrlt == NULL | |
4342 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4343 | return FALSE; | |
4344 | ||
4345 | return TRUE; | |
4346 | } | |
4347 | ||
e717da7e AM |
4348 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4349 | ||
bfeb4a28 | 4350 | bfd_boolean |
e7d1c40c AM |
4351 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4352 | struct ppc64_elf_params *params) | |
e717da7e AM |
4353 | { |
4354 | struct ppc_link_hash_table *htab; | |
4355 | ||
e7d1c40c | 4356 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4357 | |
4358 | /* Always hook our dynamic sections into the first bfd, which is the | |
4359 | linker created stub bfd. This ensures that the GOT header is at | |
4360 | the start of the output TOC section. */ | |
4361 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 4362 | if (htab == NULL) |
bfeb4a28 | 4363 | return FALSE; |
e7d1c40c AM |
4364 | htab->elf.dynobj = params->stub_bfd; |
4365 | htab->params = params; | |
bfeb4a28 | 4366 | |
0e1862bb | 4367 | if (bfd_link_relocatable (info)) |
bfeb4a28 AM |
4368 | return TRUE; |
4369 | ||
4370 | return create_linkage_sections (htab->elf.dynobj, info); | |
e717da7e AM |
4371 | } |
4372 | ||
721956f4 AM |
4373 | /* Build a name for an entry in the stub hash table. */ |
4374 | ||
4375 | static char * | |
4ce794b7 AM |
4376 | ppc_stub_name (const asection *input_section, |
4377 | const asection *sym_sec, | |
4378 | const struct ppc_link_hash_entry *h, | |
4379 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4380 | { |
4381 | char *stub_name; | |
bcaa2f82 | 4382 | ssize_t len; |
721956f4 AM |
4383 | |
4384 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4385 | offsets from a sym as a branch target? In fact, we could | |
4386 | probably assume the addend is always zero. */ | |
4387 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4388 | ||
4389 | if (h) | |
4390 | { | |
4391 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4392 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4393 | if (stub_name == NULL) |
4394 | return stub_name; | |
4395 | ||
bcaa2f82 AM |
4396 | len = sprintf (stub_name, "%08x.%s+%x", |
4397 | input_section->id & 0xffffffff, | |
4398 | h->elf.root.root.string, | |
4399 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4400 | } |
4401 | else | |
4402 | { | |
ad8e1ba5 | 4403 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4404 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4405 | if (stub_name == NULL) |
4406 | return stub_name; | |
4407 | ||
bcaa2f82 AM |
4408 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4409 | input_section->id & 0xffffffff, | |
4410 | sym_sec->id & 0xffffffff, | |
4411 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4412 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4413 | } |
bcaa2f82 | 4414 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4415 | stub_name[len - 2] = 0; |
721956f4 AM |
4416 | return stub_name; |
4417 | } | |
4418 | ||
4419 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4420 | creating the stub name takes a bit of time. */ | |
4421 | ||
4422 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4423 | ppc_get_stub_entry (const asection *input_section, |
4424 | const asection *sym_sec, | |
039b3fef | 4425 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4426 | const Elf_Internal_Rela *rel, |
4427 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4428 | { |
4429 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4430 | struct map_stub *group; |
721956f4 AM |
4431 | |
4432 | /* If this input section is part of a group of sections sharing one | |
4433 | stub section, then use the id of the first section in the group. | |
4434 | Stub names need to include a section id, as there may well be | |
4435 | more than one stub used to reach say, printf, and we need to | |
4436 | distinguish between them. */ | |
6f20ed8a | 4437 | group = htab->sec_info[input_section->id].u.group; |
721956f4 | 4438 | |
b3fac117 AM |
4439 | if (h != NULL && h->u.stub_cache != NULL |
4440 | && h->u.stub_cache->h == h | |
6f20ed8a | 4441 | && h->u.stub_cache->group == group) |
721956f4 | 4442 | { |
b3fac117 | 4443 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4444 | } |
4445 | else | |
4446 | { | |
4447 | char *stub_name; | |
4448 | ||
6f20ed8a | 4449 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4450 | if (stub_name == NULL) |
4451 | return NULL; | |
4452 | ||
4453 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4454 | stub_name, FALSE, FALSE); |
721956f4 | 4455 | if (h != NULL) |
b3fac117 | 4456 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4457 | |
4458 | free (stub_name); | |
4459 | } | |
4460 | ||
4461 | return stub_entry; | |
4462 | } | |
4463 | ||
4464 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4465 | stub entry are initialised. */ | |
4466 | ||
4467 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4468 | ppc_add_stub (const char *stub_name, |
4469 | asection *section, | |
25f53a85 | 4470 | struct bfd_link_info *info) |
721956f4 | 4471 | { |
25f53a85 | 4472 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4473 | struct map_stub *group; |
721956f4 AM |
4474 | asection *link_sec; |
4475 | asection *stub_sec; | |
4476 | struct ppc_stub_hash_entry *stub_entry; | |
4477 | ||
6f20ed8a AM |
4478 | group = htab->sec_info[section->id].u.group; |
4479 | link_sec = group->link_sec; | |
4480 | stub_sec = group->stub_sec; | |
721956f4 AM |
4481 | if (stub_sec == NULL) |
4482 | { | |
6f20ed8a AM |
4483 | size_t namelen; |
4484 | bfd_size_type len; | |
4485 | char *s_name; | |
721956f4 | 4486 | |
6f20ed8a AM |
4487 | namelen = strlen (link_sec->name); |
4488 | len = namelen + sizeof (STUB_SUFFIX); | |
4489 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4490 | if (s_name == NULL) | |
4491 | return NULL; | |
721956f4 | 4492 | |
6f20ed8a AM |
4493 | memcpy (s_name, link_sec->name, namelen); |
4494 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4495 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4496 | if (stub_sec == NULL) | |
4497 | return NULL; | |
4498 | group->stub_sec = stub_sec; | |
721956f4 AM |
4499 | } |
4500 | ||
4501 | /* Enter this entry into the linker stub hash table. */ | |
4502 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4503 | TRUE, FALSE); |
721956f4 AM |
4504 | if (stub_entry == NULL) |
4505 | { | |
8de848d8 | 4506 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4507 | section->owner, stub_name); |
721956f4 AM |
4508 | return NULL; |
4509 | } | |
4510 | ||
6f20ed8a | 4511 | stub_entry->group = group; |
721956f4 | 4512 | stub_entry->stub_offset = 0; |
721956f4 AM |
4513 | return stub_entry; |
4514 | } | |
4515 | ||
e717da7e AM |
4516 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4517 | not already done. */ | |
65f38f15 | 4518 | |
b34976b6 | 4519 | static bfd_boolean |
e717da7e | 4520 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4521 | { |
e717da7e AM |
4522 | asection *got, *relgot; |
4523 | flagword flags; | |
4524 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4525 | |
0c8d6e5c | 4526 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4527 | return FALSE; |
4dfe6ac6 NC |
4528 | if (htab == NULL) |
4529 | return FALSE; | |
0ffa91dd | 4530 | |
33e44f2e AM |
4531 | if (!htab->elf.sgot |
4532 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4533 | return FALSE; | |
e717da7e AM |
4534 | |
4535 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4536 | | SEC_LINKER_CREATED); | |
4537 | ||
c456f082 | 4538 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4539 | if (!got |
e717da7e AM |
4540 | || !bfd_set_section_alignment (abfd, got, 3)) |
4541 | return FALSE; | |
65f38f15 | 4542 | |
c456f082 AM |
4543 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4544 | flags | SEC_READONLY); | |
e717da7e | 4545 | if (!relgot |
e717da7e | 4546 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4547 | return FALSE; |
e717da7e AM |
4548 | |
4549 | ppc64_elf_tdata (abfd)->got = got; | |
4550 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4551 | return TRUE; |
65f38f15 | 4552 | } |
5bd4f169 | 4553 | |
82bd7b59 | 4554 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4555 | |
b34976b6 | 4556 | static bfd_boolean |
4ce794b7 | 4557 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4558 | { |
65f38f15 | 4559 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4560 | |
65f38f15 | 4561 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4562 | return FALSE; |
65f38f15 | 4563 | |
e717da7e | 4564 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4565 | if (htab == NULL) |
4566 | return FALSE; | |
4567 | ||
3d4d4302 | 4568 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
0e1862bb | 4569 | if (!bfd_link_pic (info)) |
3d4d4302 | 4570 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4571 | |
33e44f2e | 4572 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
0e1862bb | 4573 | || (!bfd_link_pic (info) && !htab->relbss)) |
65f38f15 AM |
4574 | abort (); |
4575 | ||
b34976b6 | 4576 | return TRUE; |
5bd4f169 AM |
4577 | } |
4578 | ||
b31867b6 AM |
4579 | /* Follow indirect and warning symbol links. */ |
4580 | ||
4581 | static inline struct bfd_link_hash_entry * | |
4582 | follow_link (struct bfd_link_hash_entry *h) | |
4583 | { | |
4584 | while (h->type == bfd_link_hash_indirect | |
4585 | || h->type == bfd_link_hash_warning) | |
4586 | h = h->u.i.link; | |
4587 | return h; | |
4588 | } | |
4589 | ||
4590 | static inline struct elf_link_hash_entry * | |
4591 | elf_follow_link (struct elf_link_hash_entry *h) | |
4592 | { | |
4593 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4594 | } | |
4595 | ||
4596 | static inline struct ppc_link_hash_entry * | |
4597 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4598 | { | |
4599 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4600 | } | |
4601 | ||
40d16e0b AM |
4602 | /* Merge PLT info on FROM with that on TO. */ |
4603 | ||
4604 | static void | |
4605 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4606 | struct ppc_link_hash_entry *to) | |
4607 | { | |
4608 | if (from->elf.plt.plist != NULL) | |
4609 | { | |
4610 | if (to->elf.plt.plist != NULL) | |
4611 | { | |
4612 | struct plt_entry **entp; | |
4613 | struct plt_entry *ent; | |
4614 | ||
4615 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4616 | { | |
4617 | struct plt_entry *dent; | |
4618 | ||
4619 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4620 | if (dent->addend == ent->addend) | |
4621 | { | |
4622 | dent->plt.refcount += ent->plt.refcount; | |
4623 | *entp = ent->next; | |
4624 | break; | |
4625 | } | |
4626 | if (dent == NULL) | |
4627 | entp = &ent->next; | |
4628 | } | |
4629 | *entp = to->elf.plt.plist; | |
4630 | } | |
4631 | ||
4632 | to->elf.plt.plist = from->elf.plt.plist; | |
4633 | from->elf.plt.plist = NULL; | |
4634 | } | |
4635 | } | |
4636 | ||
65f38f15 AM |
4637 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4638 | ||
4639 | static void | |
fcfa13d2 AM |
4640 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4641 | struct elf_link_hash_entry *dir, | |
4642 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4643 | { |
4644 | struct ppc_link_hash_entry *edir, *eind; | |
4645 | ||
4646 | edir = (struct ppc_link_hash_entry *) dir; | |
4647 | eind = (struct ppc_link_hash_entry *) ind; | |
4648 | ||
c79d6685 AM |
4649 | edir->is_func |= eind->is_func; |
4650 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4651 | edir->tls_mask |= eind->tls_mask; | |
4652 | if (eind->oh != NULL) | |
4653 | edir->oh = ppc_follow_link (eind->oh); | |
4654 | ||
4655 | /* If called to transfer flags for a weakdef during processing | |
4656 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4657 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4658 | if (!(ELIMINATE_COPY_RELOCS | |
4659 | && eind->elf.root.type != bfd_link_hash_indirect | |
4660 | && edir->elf.dynamic_adjusted)) | |
4661 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4662 | ||
4663 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4664 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4665 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4666 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
a345bc8d | 4667 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
c79d6685 | 4668 | |
411e1bfb | 4669 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4670 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4671 | { |
bbd7ec4a AM |
4672 | if (edir->dyn_relocs != NULL) |
4673 | { | |
6061a67d AM |
4674 | struct elf_dyn_relocs **pp; |
4675 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4676 | |
fcfa13d2 | 4677 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4678 | list. Merge any entries against the same section. */ |
4679 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4680 | { | |
6061a67d | 4681 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4682 | |
4683 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4684 | if (q->sec == p->sec) | |
4685 | { | |
4686 | q->pc_count += p->pc_count; | |
4687 | q->count += p->count; | |
4688 | *pp = p->next; | |
4689 | break; | |
4690 | } | |
4691 | if (q == NULL) | |
4692 | pp = &p->next; | |
4693 | } | |
4694 | *pp = edir->dyn_relocs; | |
4695 | } | |
4696 | ||
65f38f15 AM |
4697 | edir->dyn_relocs = eind->dyn_relocs; |
4698 | eind->dyn_relocs = NULL; | |
4699 | } | |
65f38f15 | 4700 | |
68ba6d40 AM |
4701 | /* If we were called to copy over info for a weak sym, that's all. |
4702 | You might think dyn_relocs need not be copied over; After all, | |
4703 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4704 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4705 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4706 | dyn_relocs in read-only sections, and it does so on what is the | |
4707 | DIR sym here. */ | |
4708 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4709 | return; | |
4710 | ||
81848ca0 AM |
4711 | /* Copy over got entries that we may have already seen to the |
4712 | symbol which just became indirect. */ | |
411e1bfb AM |
4713 | if (eind->elf.got.glist != NULL) |
4714 | { | |
4715 | if (edir->elf.got.glist != NULL) | |
4716 | { | |
4717 | struct got_entry **entp; | |
4718 | struct got_entry *ent; | |
4719 | ||
4720 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4721 | { | |
4722 | struct got_entry *dent; | |
4723 | ||
4724 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4725 | if (dent->addend == ent->addend | |
e717da7e | 4726 | && dent->owner == ent->owner |
411e1bfb AM |
4727 | && dent->tls_type == ent->tls_type) |
4728 | { | |
4729 | dent->got.refcount += ent->got.refcount; | |
4730 | *entp = ent->next; | |
4731 | break; | |
4732 | } | |
4733 | if (dent == NULL) | |
4734 | entp = &ent->next; | |
4735 | } | |
4736 | *entp = edir->elf.got.glist; | |
4737 | } | |
4738 | ||
4739 | edir->elf.got.glist = eind->elf.got.glist; | |
4740 | eind->elf.got.glist = NULL; | |
4741 | } | |
4742 | ||
4743 | /* And plt entries. */ | |
40d16e0b | 4744 | move_plt_plist (eind, edir); |
411e1bfb | 4745 | |
fcfa13d2 | 4746 | if (eind->elf.dynindx != -1) |
411e1bfb | 4747 | { |
fcfa13d2 AM |
4748 | if (edir->elf.dynindx != -1) |
4749 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4750 | edir->elf.dynstr_index); | |
411e1bfb AM |
4751 | edir->elf.dynindx = eind->elf.dynindx; |
4752 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4753 | eind->elf.dynindx = -1; | |
4754 | eind->elf.dynstr_index = 0; | |
4755 | } | |
411e1bfb AM |
4756 | } |
4757 | ||
8387904d AM |
4758 | /* Find the function descriptor hash entry from the given function code |
4759 | hash entry FH. Link the entries via their OH fields. */ | |
4760 | ||
4761 | static struct ppc_link_hash_entry * | |
b31867b6 | 4762 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4763 | { |
4764 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4765 | ||
4766 | if (fdh == NULL) | |
4767 | { | |
4768 | const char *fd_name = fh->elf.root.root.string + 1; | |
4769 | ||
4770 | fdh = (struct ppc_link_hash_entry *) | |
4771 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4772 | if (fdh == NULL) |
4773 | return fdh; | |
4774 | ||
4775 | fdh->is_func_descriptor = 1; | |
4776 | fdh->oh = fh; | |
4777 | fh->is_func = 1; | |
4778 | fh->oh = fdh; | |
8387904d AM |
4779 | } |
4780 | ||
b31867b6 | 4781 | return ppc_follow_link (fdh); |
8387904d AM |
4782 | } |
4783 | ||
bb700d78 AM |
4784 | /* Make a fake function descriptor sym for the code sym FH. */ |
4785 | ||
4786 | static struct ppc_link_hash_entry * | |
4787 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4788 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4789 | { |
4790 | bfd *abfd; | |
4791 | asymbol *newsym; | |
4792 | struct bfd_link_hash_entry *bh; | |
4793 | struct ppc_link_hash_entry *fdh; | |
4794 | ||
4795 | abfd = fh->elf.root.u.undef.abfd; | |
4796 | newsym = bfd_make_empty_symbol (abfd); | |
4797 | newsym->name = fh->elf.root.root.string + 1; | |
4798 | newsym->section = bfd_und_section_ptr; | |
4799 | newsym->value = 0; | |
908b32fc | 4800 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4801 | |
4802 | bh = NULL; | |
4803 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4804 | newsym->flags, newsym->section, | |
4805 | newsym->value, NULL, FALSE, FALSE, | |
4806 | &bh)) | |
4807 | return NULL; | |
4808 | ||
4809 | fdh = (struct ppc_link_hash_entry *) bh; | |
4810 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4811 | fdh->fake = 1; |
4812 | fdh->is_func_descriptor = 1; | |
4813 | fdh->oh = fh; | |
4814 | fh->is_func = 1; | |
4815 | fh->oh = fdh; | |
bb700d78 AM |
4816 | return fdh; |
4817 | } | |
4818 | ||
8387904d AM |
4819 | /* Fix function descriptor symbols defined in .opd sections to be |
4820 | function type. */ | |
555cd476 AM |
4821 | |
4822 | static bfd_boolean | |
c16153ae | 4823 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4824 | struct bfd_link_info *info, |
555cd476 | 4825 | Elf_Internal_Sym *isym, |
6911b7dc | 4826 | const char **name, |
555cd476 AM |
4827 | flagword *flags ATTRIBUTE_UNUSED, |
4828 | asection **sec, | |
b53dfeb2 | 4829 | bfd_vma *value) |
555cd476 | 4830 | { |
f1885d1e AM |
4831 | if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
4832 | || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4833 | && (ibfd->flags & DYNAMIC) == 0 | |
4834 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
13a2df29 | 4835 | elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any; |
f64b2e8d | 4836 | |
b53dfeb2 | 4837 | if (*sec != NULL |
f1885d1e | 4838 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4839 | { |
4840 | asection *code_sec; | |
4841 | ||
4842 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4843 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4844 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4845 | ||
4846 | /* If the symbol is a function defined in .opd, and the function | |
4847 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4848 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4849 | && (*sec)->reloc_count != 0 |
4850 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4851 | FALSE) != (bfd_vma) -1 | |
4852 | && discarded_section (code_sec)) | |
4853 | { | |
4854 | *sec = bfd_und_section_ptr; | |
4855 | isym->st_shndx = SHN_UNDEF; | |
4856 | } | |
4857 | } | |
dbd1e97e AM |
4858 | else if (*sec != NULL |
4859 | && strcmp ((*sec)->name, ".toc") == 0 | |
4860 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4861 | { | |
4862 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4863 | if (htab != NULL) | |
4864 | htab->params->object_in_toc = 1; | |
4865 | } | |
433817dd | 4866 | |
6911b7dc AM |
4867 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4868 | { | |
4869 | if (abiversion (ibfd) == 0) | |
4870 | set_abiversion (ibfd, 2); | |
4871 | else if (abiversion (ibfd) == 1) | |
4872 | { | |
4873 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
4874 | " for ABI version 1\n"), name); | |
4875 | bfd_set_error (bfd_error_bad_value); | |
4876 | return FALSE; | |
4877 | } | |
4878 | } | |
4879 | ||
555cd476 AM |
4880 | return TRUE; |
4881 | } | |
4882 | ||
6911b7dc AM |
4883 | /* Merge non-visibility st_other attributes: local entry point. */ |
4884 | ||
4885 | static void | |
4886 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4887 | const Elf_Internal_Sym *isym, | |
4888 | bfd_boolean definition, | |
4889 | bfd_boolean dynamic) | |
4890 | { | |
4891 | if (definition && !dynamic) | |
4892 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
4893 | | ELF_ST_VISIBILITY (h->other)); | |
4894 | } | |
4895 | ||
8387904d | 4896 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4897 | inclusion of a new ABI object archive that defines "bar". |
4898 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4899 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4900 | |
4901 | static struct elf_link_hash_entry * | |
4902 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4903 | struct bfd_link_info *info, | |
4904 | const char *name) | |
4905 | { | |
4906 | struct elf_link_hash_entry *h; | |
4907 | char *dot_name; | |
4908 | size_t len; | |
4909 | ||
4910 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4911 | if (h != NULL |
4912 | /* Don't return this sym if it is a fake function descriptor | |
4913 | created by add_symbol_adjust. */ | |
4914 | && !(h->root.type == bfd_link_hash_undefweak | |
4915 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4916 | return h; |
4917 | ||
4918 | if (name[0] == '.') | |
4919 | return h; | |
4920 | ||
4921 | len = strlen (name); | |
4922 | dot_name = bfd_alloc (abfd, len + 2); | |
4923 | if (dot_name == NULL) | |
4924 | return (struct elf_link_hash_entry *) 0 - 1; | |
4925 | dot_name[0] = '.'; | |
4926 | memcpy (dot_name + 1, name, len + 1); | |
4927 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4928 | bfd_release (abfd, dot_name); | |
4929 | return h; | |
4930 | } | |
4931 | ||
4932 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4933 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4934 | are made weak. This stops later archive searches from including an | |
4935 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4936 | prevents the linker complaining about undefined symbols. |
4937 | We also check and correct mismatched symbol visibility here. The | |
4938 | most restrictive visibility of the function descriptor and the | |
4939 | function entry symbol is used. */ | |
8387904d AM |
4940 | |
4941 | static bfd_boolean | |
b3fac117 | 4942 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4943 | { |
8387904d AM |
4944 | struct ppc_link_hash_table *htab; |
4945 | struct ppc_link_hash_entry *fdh; | |
4946 | ||
b3fac117 | 4947 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4948 | return TRUE; |
4949 | ||
b3fac117 AM |
4950 | if (eh->elf.root.type == bfd_link_hash_warning) |
4951 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4952 | |
b3fac117 AM |
4953 | if (eh->elf.root.root.string[0] != '.') |
4954 | abort (); | |
8387904d | 4955 | |
b3fac117 | 4956 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4957 | if (htab == NULL) |
4958 | return FALSE; | |
4959 | ||
b31867b6 AM |
4960 | fdh = lookup_fdh (eh, htab); |
4961 | if (fdh == NULL) | |
4962 | { | |
0e1862bb | 4963 | if (!bfd_link_relocatable (info) |
b31867b6 AM |
4964 | && (eh->elf.root.type == bfd_link_hash_undefined |
4965 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4966 | && eh->elf.ref_regular) | |
4967 | { | |
4968 | /* Make an undefweak function descriptor sym, which is enough to | |
4969 | pull in an --as-needed shared lib, but won't cause link | |
4970 | errors. Archives are handled elsewhere. */ | |
4971 | fdh = make_fdh (info, eh); | |
4972 | if (fdh == NULL) | |
4973 | return FALSE; | |
4974 | fdh->elf.ref_regular = 1; | |
4975 | } | |
bb700d78 | 4976 | } |
b31867b6 | 4977 | else |
8387904d | 4978 | { |
35b0ce59 AM |
4979 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4980 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4981 | if (entry_vis < descr_vis) | |
4982 | fdh->elf.other += entry_vis - descr_vis; | |
4983 | else if (entry_vis > descr_vis) | |
4984 | eh->elf.other += descr_vis - entry_vis; | |
4985 | ||
e87d886e AM |
4986 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4987 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4988 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4989 | { |
4990 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4991 | eh->was_undefined = 1; | |
4992 | htab->twiddled_syms = 1; | |
4993 | } | |
8387904d | 4994 | } |
99877b66 | 4995 | |
8387904d AM |
4996 | return TRUE; |
4997 | } | |
4998 | ||
f6c7c3e8 AM |
4999 | /* Set up opd section info and abiversion for IBFD, and process list |
5000 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5001 | |
8387904d | 5002 | static bfd_boolean |
f6c7c3e8 | 5003 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5004 | { |
99877b66 | 5005 | struct ppc_link_hash_table *htab; |
b3fac117 | 5006 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5007 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5008 | |
459609d6 | 5009 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5010 | { |
459609d6 AM |
5011 | if (abiversion (ibfd) == 0) |
5012 | set_abiversion (ibfd, 1); | |
5013 | else if (abiversion (ibfd) == 2) | |
f6c7c3e8 | 5014 | { |
459609d6 AM |
5015 | info->callbacks->einfo (_("%P: %B .opd not allowed in ABI" |
5016 | " version %d\n"), | |
5017 | ibfd, abiversion (ibfd)); | |
5018 | bfd_set_error (bfd_error_bad_value); | |
5019 | return FALSE; | |
f6c7c3e8 AM |
5020 | } |
5021 | ||
459609d6 AM |
5022 | if ((ibfd->flags & DYNAMIC) == 0 |
5023 | && (opd->flags & SEC_RELOC) != 0 | |
5024 | && opd->reloc_count != 0 | |
5025 | && !bfd_is_abs_section (opd->output_section)) | |
b3fac117 | 5026 | { |
459609d6 AM |
5027 | /* Garbage collection needs some extra help with .opd sections. |
5028 | We don't want to necessarily keep everything referenced by | |
5029 | relocs in .opd, as that would keep all functions. Instead, | |
5030 | if we reference an .opd symbol (a function descriptor), we | |
5031 | want to keep the function code symbol's section. This is | |
5032 | easy for global symbols, but for local syms we need to keep | |
5033 | information about the associated function section. */ | |
5034 | bfd_size_type amt; | |
5035 | asection **opd_sym_map; | |
5036 | ||
51aecdc5 | 5037 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); |
459609d6 AM |
5038 | opd_sym_map = bfd_zalloc (ibfd, amt); |
5039 | if (opd_sym_map == NULL) | |
b3fac117 | 5040 | return FALSE; |
459609d6 AM |
5041 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
5042 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); | |
5043 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
b3fac117 AM |
5044 | } |
5045 | } | |
5046 | ||
459609d6 AM |
5047 | if (!is_ppc64_elf (info->output_bfd)) |
5048 | return TRUE; | |
5049 | htab = ppc_hash_table (info); | |
5050 | if (htab == NULL) | |
5051 | return FALSE; | |
5052 | ||
5053 | /* For input files without an explicit abiversion in e_flags | |
5054 | we should have flagged any with symbol st_other bits set | |
5055 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5056 | Set the output abiversion if not yet set, and for any input | |
5057 | still ambiguous, take its abiversion from the output. | |
5058 | Differences in ABI are reported later. */ | |
5059 | if (abiversion (info->output_bfd) == 0) | |
5060 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5061 | else if (abiversion (ibfd) == 0) | |
5062 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
5063 | ||
5064 | p = &htab->dot_syms; | |
5065 | while ((eh = *p) != NULL) | |
5066 | { | |
5067 | *p = NULL; | |
5068 | if (&eh->elf == htab->elf.hgot) | |
5069 | ; | |
5070 | else if (htab->elf.hgot == NULL | |
5071 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5072 | htab->elf.hgot = &eh->elf; | |
5073 | else if (!add_symbol_adjust (eh, info)) | |
5074 | return FALSE; | |
5075 | p = &eh->u.next_dot_sym; | |
5076 | } | |
5077 | ||
b3fac117 AM |
5078 | /* Clear the list for non-ppc64 input files. */ |
5079 | p = &htab->dot_syms; | |
5080 | while ((eh = *p) != NULL) | |
5081 | { | |
5082 | *p = NULL; | |
5083 | p = &eh->u.next_dot_sym; | |
5084 | } | |
99877b66 AM |
5085 | |
5086 | /* We need to fix the undefs list for any syms we have twiddled to | |
5087 | undef_weak. */ | |
5088 | if (htab->twiddled_syms) | |
5089 | { | |
77cfaee6 | 5090 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
5091 | htab->twiddled_syms = 0; |
5092 | } | |
b3fac117 | 5093 | return TRUE; |
8387904d AM |
5094 | } |
5095 | ||
97fed1c9 JJ |
5096 | /* Undo hash table changes when an --as-needed input file is determined |
5097 | not to be needed. */ | |
5098 | ||
5099 | static bfd_boolean | |
e5034e59 AM |
5100 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5101 | struct bfd_link_info *info, | |
5102 | enum notice_asneeded_action act) | |
97fed1c9 | 5103 | { |
e5034e59 AM |
5104 | if (act == notice_not_needed) |
5105 | { | |
5106 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5107 | |
e5034e59 AM |
5108 | if (htab == NULL) |
5109 | return FALSE; | |
4dfe6ac6 | 5110 | |
e5034e59 AM |
5111 | htab->dot_syms = NULL; |
5112 | } | |
5113 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5114 | } |
5115 | ||
aa374f67 AM |
5116 | /* If --just-symbols against a final linked binary, then assume we need |
5117 | toc adjusting stubs when calling functions defined there. */ | |
5118 | ||
5119 | static void | |
5120 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5121 | { | |
5122 | if ((sec->flags & SEC_CODE) != 0 | |
5123 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5124 | && is_ppc64_elf (sec->owner)) | |
5125 | { | |
2c3f079f AM |
5126 | if (abiversion (sec->owner) >= 2 |
5127 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5128 | sec->has_toc_reloc = 1; |
5129 | } | |
5130 | _bfd_elf_link_just_syms (sec, info); | |
5131 | } | |
5132 | ||
e054468f | 5133 | static struct plt_entry ** |
4ce794b7 AM |
5134 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5135 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5136 | { |
5137 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5138 | struct plt_entry **local_plt; |
f961d9dd | 5139 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5140 | |
5141 | if (local_got_ents == NULL) | |
5142 | { | |
5143 | bfd_size_type size = symtab_hdr->sh_info; | |
5144 | ||
e054468f AM |
5145 | size *= (sizeof (*local_got_ents) |
5146 | + sizeof (*local_plt) | |
5147 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5148 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5149 | if (local_got_ents == NULL) |
e054468f | 5150 | return NULL; |
411e1bfb AM |
5151 | elf_local_got_ents (abfd) = local_got_ents; |
5152 | } | |
5153 | ||
e054468f | 5154 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5155 | { |
5156 | struct got_entry *ent; | |
5157 | ||
5158 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5159 | if (ent->addend == r_addend |
5160 | && ent->owner == abfd | |
5161 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5162 | break; |
5163 | if (ent == NULL) | |
5164 | { | |
5165 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5166 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5167 | if (ent == NULL) |
5168 | return FALSE; | |
5169 | ent->next = local_got_ents[r_symndx]; | |
5170 | ent->addend = r_addend; | |
e717da7e | 5171 | ent->owner = abfd; |
411e1bfb | 5172 | ent->tls_type = tls_type; |
927be08e | 5173 | ent->is_indirect = FALSE; |
411e1bfb AM |
5174 | ent->got.refcount = 0; |
5175 | local_got_ents[r_symndx] = ent; | |
5176 | } | |
5177 | ent->got.refcount += 1; | |
5178 | } | |
5179 | ||
e054468f | 5180 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5181 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5182 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5183 | |
5184 | return local_plt + r_symndx; | |
65f38f15 AM |
5185 | } |
5186 | ||
411e1bfb | 5187 | static bfd_boolean |
e054468f | 5188 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5189 | { |
411e1bfb | 5190 | struct plt_entry *ent; |
1e2f5b6e | 5191 | |
e054468f | 5192 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5193 | if (ent->addend == addend) |
5194 | break; | |
5195 | if (ent == NULL) | |
1e2f5b6e | 5196 | { |
411e1bfb | 5197 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5198 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5199 | if (ent == NULL) |
5200 | return FALSE; | |
e054468f | 5201 | ent->next = *plist; |
411e1bfb AM |
5202 | ent->addend = addend; |
5203 | ent->plt.refcount = 0; | |
e054468f | 5204 | *plist = ent; |
1e2f5b6e | 5205 | } |
411e1bfb | 5206 | ent->plt.refcount += 1; |
b34976b6 | 5207 | return TRUE; |
1e2f5b6e AM |
5208 | } |
5209 | ||
e054468f AM |
5210 | static bfd_boolean |
5211 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5212 | { | |
5213 | return (r_type == R_PPC64_REL24 | |
5214 | || r_type == R_PPC64_REL14 | |
5215 | || r_type == R_PPC64_REL14_BRTAKEN | |
5216 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5217 | || r_type == R_PPC64_ADDR24 | |
5218 | || r_type == R_PPC64_ADDR14 | |
5219 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5220 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5221 | } | |
5222 | ||
5bd4f169 | 5223 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5224 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5225 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5226 | |
b34976b6 | 5227 | static bfd_boolean |
4ce794b7 AM |
5228 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5229 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5230 | { |
65f38f15 | 5231 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5232 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5233 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5234 | const Elf_Internal_Rela *rel; |
5235 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5236 | asection *sreloc; |
1e2f5b6e | 5237 | asection **opd_sym_map; |
3a71aa26 | 5238 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 5239 | |
0e1862bb | 5240 | if (bfd_link_relocatable (info)) |
b34976b6 | 5241 | return TRUE; |
5bd4f169 | 5242 | |
680a3378 AM |
5243 | /* Don't do anything special with non-loaded, non-alloced sections. |
5244 | In particular, any relocs in such sections should not affect GOT | |
5245 | and PLT reference counting (ie. we don't allow them to create GOT | |
5246 | or PLT entries), there's no possibility or desire to optimize TLS | |
5247 | relocs, and there's not much point in propagating relocs to shared | |
5248 | libs that the dynamic linker won't relocate. */ | |
5249 | if ((sec->flags & SEC_ALLOC) == 0) | |
5250 | return TRUE; | |
5251 | ||
0c8d6e5c | 5252 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5253 | |
65f38f15 | 5254 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5255 | if (htab == NULL) |
5256 | return FALSE; | |
5257 | ||
3a71aa26 AM |
5258 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5259 | FALSE, FALSE, TRUE); | |
5260 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5261 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5262 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5263 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5264 | sreloc = NULL; |
1e2f5b6e | 5265 | opd_sym_map = NULL; |
f6c7c3e8 AM |
5266 | if (ppc64_elf_section_data (sec) != NULL |
5267 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) | |
5268 | opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec; | |
5bd4f169 AM |
5269 | |
5270 | rel_end = relocs + sec->reloc_count; | |
5271 | for (rel = relocs; rel < rel_end; rel++) | |
5272 | { | |
5273 | unsigned long r_symndx; | |
5274 | struct elf_link_hash_entry *h; | |
04c9666a | 5275 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5276 | int tls_type; |
7c8fe5c4 | 5277 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 5278 | struct plt_entry **ifunc; |
5bd4f169 AM |
5279 | |
5280 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5281 | if (r_symndx < symtab_hdr->sh_info) | |
5282 | h = NULL; | |
5283 | else | |
973a3492 L |
5284 | { |
5285 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5286 | h = elf_follow_link (h); |
81fbe831 AM |
5287 | |
5288 | /* PR15323, ref flags aren't set for references in the same | |
5289 | object. */ | |
5290 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5291 | |
5292 | if (h == htab->elf.hgot) | |
5293 | sec->has_toc_reloc = 1; | |
973a3492 | 5294 | } |
5bd4f169 | 5295 | |
727fc41e | 5296 | tls_type = 0; |
e054468f | 5297 | ifunc = NULL; |
25f23106 AM |
5298 | if (h != NULL) |
5299 | { | |
5300 | if (h->type == STT_GNU_IFUNC) | |
5301 | { | |
5302 | h->needs_plt = 1; | |
5303 | ifunc = &h->plt.plist; | |
5304 | } | |
5305 | } | |
5306 | else | |
5307 | { | |
5308 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5309 | abfd, r_symndx); | |
5310 | if (isym == NULL) | |
5311 | return FALSE; | |
5312 | ||
5313 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5314 | { | |
5315 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5316 | rel->r_addend, PLT_IFUNC); | |
5317 | if (ifunc == NULL) | |
5318 | return FALSE; | |
5319 | } | |
5320 | } | |
4ce794b7 | 5321 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
5322 | if (is_branch_reloc (r_type)) |
5323 | { | |
5324 | if (h != NULL && (h == tga || h == dottga)) | |
5325 | { | |
5326 | if (rel != relocs | |
5327 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5328 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5329 | /* We have a new-style __tls_get_addr call with a marker | |
5330 | reloc. */ | |
5331 | ; | |
5332 | else | |
5333 | /* Mark this section as having an old-style call. */ | |
5334 | sec->has_tls_get_addr_call = 1; | |
5335 | } | |
727fc41e | 5336 | |
e054468f | 5337 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5338 | if (ifunc != NULL |
5339 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5340 | return FALSE; | |
5341 | } | |
727fc41e | 5342 | |
a33d1f77 | 5343 | switch (r_type) |
5bd4f169 | 5344 | { |
727fc41e AM |
5345 | case R_PPC64_TLSGD: |
5346 | case R_PPC64_TLSLD: | |
5347 | /* These special tls relocs tie a call to __tls_get_addr with | |
5348 | its parameter symbol. */ | |
5349 | break; | |
5350 | ||
411e1bfb AM |
5351 | case R_PPC64_GOT_TLSLD16: |
5352 | case R_PPC64_GOT_TLSLD16_LO: | |
5353 | case R_PPC64_GOT_TLSLD16_HI: | |
5354 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5355 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5356 | goto dogottls; |
5357 | ||
5358 | case R_PPC64_GOT_TLSGD16: | |
5359 | case R_PPC64_GOT_TLSGD16_LO: | |
5360 | case R_PPC64_GOT_TLSGD16_HI: | |
5361 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5362 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5363 | goto dogottls; |
5364 | ||
5365 | case R_PPC64_GOT_TPREL16_DS: | |
5366 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5367 | case R_PPC64_GOT_TPREL16_HI: | |
5368 | case R_PPC64_GOT_TPREL16_HA: | |
0e1862bb | 5369 | if (bfd_link_pic (info)) |
411e1bfb AM |
5370 | info->flags |= DF_STATIC_TLS; |
5371 | tls_type = TLS_TLS | TLS_TPREL; | |
5372 | goto dogottls; | |
5373 | ||
5374 | case R_PPC64_GOT_DTPREL16_DS: | |
5375 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5376 | case R_PPC64_GOT_DTPREL16_HI: | |
5377 | case R_PPC64_GOT_DTPREL16_HA: | |
5378 | tls_type = TLS_TLS | TLS_DTPREL; | |
5379 | dogottls: | |
5380 | sec->has_tls_reloc = 1; | |
5381 | /* Fall thru */ | |
5382 | ||
5bd4f169 | 5383 | case R_PPC64_GOT16: |
5bd4f169 | 5384 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5385 | case R_PPC64_GOT16_HA: |
5386 | case R_PPC64_GOT16_HI: | |
5387 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5388 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5389 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5390 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5391 | if (r_type == R_PPC64_GOT_TLSLD16 |
5392 | || r_type == R_PPC64_GOT_TLSGD16 | |
5393 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5394 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5395 | || r_type == R_PPC64_GOT16 | |
5396 | || r_type == R_PPC64_GOT16_DS) | |
5397 | { | |
5398 | htab->do_multi_toc = 1; | |
d77c8a4b | 5399 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5400 | } |
5401 | ||
e717da7e AM |
5402 | if (ppc64_elf_tdata (abfd)->got == NULL |
5403 | && !create_got_section (abfd, info)) | |
b34976b6 | 5404 | return FALSE; |
5bd4f169 AM |
5405 | |
5406 | if (h != NULL) | |
5407 | { | |
411e1bfb AM |
5408 | struct ppc_link_hash_entry *eh; |
5409 | struct got_entry *ent; | |
65f38f15 | 5410 | |
411e1bfb AM |
5411 | eh = (struct ppc_link_hash_entry *) h; |
5412 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5413 | if (ent->addend == rel->r_addend | |
e717da7e | 5414 | && ent->owner == abfd |
411e1bfb AM |
5415 | && ent->tls_type == tls_type) |
5416 | break; | |
5417 | if (ent == NULL) | |
5bd4f169 | 5418 | { |
411e1bfb | 5419 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5420 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5421 | if (ent == NULL) |
b34976b6 | 5422 | return FALSE; |
411e1bfb AM |
5423 | ent->next = eh->elf.got.glist; |
5424 | ent->addend = rel->r_addend; | |
e717da7e | 5425 | ent->owner = abfd; |
411e1bfb | 5426 | ent->tls_type = tls_type; |
927be08e | 5427 | ent->is_indirect = FALSE; |
411e1bfb AM |
5428 | ent->got.refcount = 0; |
5429 | eh->elf.got.glist = ent; | |
5bd4f169 | 5430 | } |
411e1bfb | 5431 | ent->got.refcount += 1; |
e7b938ca | 5432 | eh->tls_mask |= tls_type; |
5bd4f169 | 5433 | } |
411e1bfb AM |
5434 | else |
5435 | /* This is a global offset table entry for a local symbol. */ | |
5436 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5437 | rel->r_addend, tls_type)) | |
5438 | return FALSE; | |
a345bc8d AM |
5439 | |
5440 | /* We may also need a plt entry if the symbol turns out to be | |
5441 | an ifunc. */ | |
0e1862bb | 5442 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5443 | { |
5444 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5445 | return FALSE; | |
5446 | } | |
5bd4f169 AM |
5447 | break; |
5448 | ||
5bd4f169 | 5449 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5450 | case R_PPC64_PLT16_HI: |
5451 | case R_PPC64_PLT16_LO: | |
5452 | case R_PPC64_PLT32: | |
5453 | case R_PPC64_PLT64: | |
5bd4f169 | 5454 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5455 | actually build the entry in adjust_dynamic_symbol, |
5456 | because this might be a case of linking PIC code without | |
5457 | linking in any dynamic objects, in which case we don't | |
5458 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5459 | if (h == NULL) |
5460 | { | |
5461 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5462 | table entry for a local symbol. */ |
5bd4f169 | 5463 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5464 | return FALSE; |
5bd4f169 | 5465 | } |
411e1bfb | 5466 | else |
e054468f AM |
5467 | { |
5468 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5469 | return FALSE; | |
5470 | h->needs_plt = 1; | |
5471 | if (h->root.root.string[0] == '.' | |
5472 | && h->root.root.string[1] != '\0') | |
5473 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5474 | } | |
5bd4f169 AM |
5475 | break; |
5476 | ||
5477 | /* The following relocations don't need to propagate the | |
5478 | relocation if linking a shared object since they are | |
5479 | section relative. */ | |
5480 | case R_PPC64_SECTOFF: | |
5481 | case R_PPC64_SECTOFF_LO: | |
5482 | case R_PPC64_SECTOFF_HI: | |
5483 | case R_PPC64_SECTOFF_HA: | |
5484 | case R_PPC64_SECTOFF_DS: | |
5485 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5486 | case R_PPC64_DTPREL16: |
5487 | case R_PPC64_DTPREL16_LO: | |
5488 | case R_PPC64_DTPREL16_HI: | |
5489 | case R_PPC64_DTPREL16_HA: | |
5490 | case R_PPC64_DTPREL16_DS: | |
5491 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5492 | case R_PPC64_DTPREL16_HIGH: |
5493 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5494 | case R_PPC64_DTPREL16_HIGHER: |
5495 | case R_PPC64_DTPREL16_HIGHERA: | |
5496 | case R_PPC64_DTPREL16_HIGHEST: | |
5497 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5498 | break; |
5499 | ||
ad8e1ba5 | 5500 | /* Nor do these. */ |
25f23106 AM |
5501 | case R_PPC64_REL16: |
5502 | case R_PPC64_REL16_LO: | |
5503 | case R_PPC64_REL16_HI: | |
5504 | case R_PPC64_REL16_HA: | |
5505 | break; | |
5506 | ||
45965137 AM |
5507 | /* Not supported as a dynamic relocation. */ |
5508 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5509 | if (bfd_link_pic (info)) |
45965137 AM |
5510 | { |
5511 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5512 | ppc_howto_init (); | |
5513 | info->callbacks->einfo (_("%P: %H: %s reloc unsupported " | |
5514 | "in shared libraries and PIEs.\n"), | |
5515 | abfd, sec, rel->r_offset, | |
5516 | ppc64_elf_howto_table[r_type]->name); | |
5517 | bfd_set_error (bfd_error_bad_value); | |
5518 | return FALSE; | |
5519 | } | |
5520 | break; | |
5521 | ||
ad8e1ba5 | 5522 | case R_PPC64_TOC16: |
33c0ec9d AM |
5523 | case R_PPC64_TOC16_DS: |
5524 | htab->do_multi_toc = 1; | |
d77c8a4b | 5525 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5526 | case R_PPC64_TOC16_LO: |
5527 | case R_PPC64_TOC16_HI: | |
5528 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5529 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5530 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5531 | break; |
5532 | ||
5bd4f169 AM |
5533 | /* This relocation describes the C++ object vtable hierarchy. |
5534 | Reconstruct it for later use during GC. */ | |
5535 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5536 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5537 | return FALSE; |
5bd4f169 AM |
5538 | break; |
5539 | ||
5540 | /* This relocation describes which C++ vtable entries are actually | |
5541 | used. Record for later use during GC. */ | |
5542 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5543 | BFD_ASSERT (h != NULL); |
5544 | if (h != NULL | |
5545 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5546 | return FALSE; |
5bd4f169 AM |
5547 | break; |
5548 | ||
721956f4 AM |
5549 | case R_PPC64_REL14: |
5550 | case R_PPC64_REL14_BRTAKEN: | |
5551 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5552 | { |
5553 | asection *dest = NULL; | |
5554 | ||
5555 | /* Heuristic: If jumping outside our section, chances are | |
5556 | we are going to need a stub. */ | |
5557 | if (h != NULL) | |
5558 | { | |
5559 | /* If the sym is weak it may be overridden later, so | |
5560 | don't assume we know where a weak sym lives. */ | |
5561 | if (h->root.type == bfd_link_hash_defined) | |
5562 | dest = h->root.u.def.section; | |
5563 | } | |
5564 | else | |
87d72d41 AM |
5565 | { |
5566 | Elf_Internal_Sym *isym; | |
5567 | ||
5568 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5569 | abfd, r_symndx); | |
5570 | if (isym == NULL) | |
5571 | return FALSE; | |
5572 | ||
5573 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5574 | } | |
5575 | ||
220c76dd | 5576 | if (dest != sec) |
7c8fe5c4 | 5577 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5578 | } |
721956f4 AM |
5579 | /* Fall through. */ |
5580 | ||
5d1634d7 | 5581 | case R_PPC64_REL24: |
e054468f | 5582 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5583 | { |
5584 | /* We may need a .plt entry if the function this reloc | |
5585 | refers to is in a shared lib. */ | |
e054468f | 5586 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5587 | return FALSE; |
e054468f AM |
5588 | h->needs_plt = 1; |
5589 | if (h->root.root.string[0] == '.' | |
5590 | && h->root.root.string[1] != '\0') | |
5591 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5592 | if (h == tga || h == dottga) |
411e1bfb | 5593 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5594 | } |
5595 | break; | |
5596 | ||
5597 | case R_PPC64_TPREL64: | |
5598 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
0e1862bb | 5599 | if (bfd_link_pic (info)) |
411e1bfb AM |
5600 | info->flags |= DF_STATIC_TLS; |
5601 | goto dotlstoc; | |
5602 | ||
5603 | case R_PPC64_DTPMOD64: | |
5604 | if (rel + 1 < rel_end | |
5605 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5606 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5607 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5608 | else |
951fd09b | 5609 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5610 | goto dotlstoc; |
5611 | ||
5612 | case R_PPC64_DTPREL64: | |
5613 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5614 | if (rel != relocs | |
5615 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5616 | && rel[-1].r_offset == rel->r_offset - 8) | |
5617 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5618 | Don't mark with TLS_DTPREL. */ | |
5619 | goto dodyn; | |
5620 | ||
5621 | dotlstoc: | |
5622 | sec->has_tls_reloc = 1; | |
5623 | if (h != NULL) | |
5624 | { | |
5625 | struct ppc_link_hash_entry *eh; | |
5626 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5627 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5628 | } |
5629 | else | |
5630 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5631 | rel->r_addend, tls_type)) | |
5632 | return FALSE; | |
5633 | ||
7c8fe5c4 AM |
5634 | ppc64_sec = ppc64_elf_section_data (sec); |
5635 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5636 | { |
3a71aa26 AM |
5637 | bfd_size_type amt; |
5638 | ||
e7b938ca | 5639 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5640 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5641 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5642 | if (ppc64_sec->u.toc.symndx == NULL) | |
5643 | return FALSE; | |
5644 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5645 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5646 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5647 | return FALSE; |
7c8fe5c4 AM |
5648 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5649 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5650 | } |
5651 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5652 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5653 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5654 | |
5655 | /* Mark the second slot of a GD or LD entry. | |
5656 | -1 to indicate GD and -2 to indicate LD. */ | |
5657 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5658 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5659 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5660 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5661 | goto dodyn; |
5662 | ||
5663 | case R_PPC64_TPREL16: | |
5664 | case R_PPC64_TPREL16_LO: | |
5665 | case R_PPC64_TPREL16_HI: | |
5666 | case R_PPC64_TPREL16_HA: | |
5667 | case R_PPC64_TPREL16_DS: | |
5668 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5669 | case R_PPC64_TPREL16_HIGH: |
5670 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5671 | case R_PPC64_TPREL16_HIGHER: |
5672 | case R_PPC64_TPREL16_HIGHERA: | |
5673 | case R_PPC64_TPREL16_HIGHEST: | |
5674 | case R_PPC64_TPREL16_HIGHESTA: | |
0e1862bb | 5675 | if (bfd_link_pic (info)) |
411e1bfb | 5676 | { |
afb93314 | 5677 | info->flags |= DF_STATIC_TLS; |
411e1bfb | 5678 | goto dodyn; |
5d1634d7 AM |
5679 | } |
5680 | break; | |
5681 | ||
e86ce104 | 5682 | case R_PPC64_ADDR64: |
1e2f5b6e | 5683 | if (opd_sym_map != NULL |
1e2f5b6e | 5684 | && rel + 1 < rel_end |
4ce794b7 | 5685 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5686 | { |
8387904d AM |
5687 | if (h != NULL) |
5688 | { | |
5689 | if (h->root.root.string[0] == '.' | |
5690 | && h->root.root.string[1] != 0 | |
b31867b6 | 5691 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5692 | ; |
5693 | else | |
5694 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5695 | } | |
5696 | else | |
5697 | { | |
5698 | asection *s; | |
87d72d41 | 5699 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5700 | |
87d72d41 AM |
5701 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5702 | abfd, r_symndx); | |
5703 | if (isym == NULL) | |
8387904d | 5704 | return FALSE; |
87d72d41 AM |
5705 | |
5706 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5707 | if (s != NULL && s != sec) | |
51aecdc5 | 5708 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; |
8387904d | 5709 | } |
1e2f5b6e | 5710 | } |
e86ce104 AM |
5711 | /* Fall through. */ |
5712 | ||
65f38f15 AM |
5713 | case R_PPC64_ADDR16: |
5714 | case R_PPC64_ADDR16_DS: | |
5715 | case R_PPC64_ADDR16_HA: | |
5716 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5717 | case R_PPC64_ADDR16_HIGH: |
5718 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5719 | case R_PPC64_ADDR16_HIGHER: |
5720 | case R_PPC64_ADDR16_HIGHERA: | |
5721 | case R_PPC64_ADDR16_HIGHEST: | |
5722 | case R_PPC64_ADDR16_HIGHESTA: | |
5723 | case R_PPC64_ADDR16_LO: | |
5724 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 5725 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5726 | && rel->r_addend == 0) |
5727 | { | |
5728 | /* We may need a .plt entry if this reloc refers to a | |
5729 | function in a shared lib. */ | |
5730 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5731 | return FALSE; | |
5732 | h->pointer_equality_needed = 1; | |
5733 | } | |
5734 | /* Fall through. */ | |
5735 | ||
5736 | case R_PPC64_REL30: | |
5737 | case R_PPC64_REL32: | |
5738 | case R_PPC64_REL64: | |
5739 | case R_PPC64_ADDR14: | |
5740 | case R_PPC64_ADDR14_BRNTAKEN: | |
5741 | case R_PPC64_ADDR14_BRTAKEN: | |
65f38f15 | 5742 | case R_PPC64_ADDR24: |
65f38f15 | 5743 | case R_PPC64_ADDR32: |
65f38f15 AM |
5744 | case R_PPC64_UADDR16: |
5745 | case R_PPC64_UADDR32: | |
5746 | case R_PPC64_UADDR64: | |
5bd4f169 | 5747 | case R_PPC64_TOC: |
0e1862bb | 5748 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 5749 | /* We may need a copy reloc. */ |
f5385ebf | 5750 | h->non_got_ref = 1; |
81848ca0 | 5751 | |
41bd81ab | 5752 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5753 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5754 | break; |
e86ce104 | 5755 | |
65f38f15 AM |
5756 | /* If we are creating a shared library, and this is a reloc |
5757 | against a global symbol, or a non PC relative reloc | |
5758 | against a local symbol, then we need to copy the reloc | |
5759 | into the shared library. However, if we are linking with | |
5760 | -Bsymbolic, we do not need to copy a reloc against a | |
5761 | global symbol which is defined in an object we are | |
5762 | including in the link (i.e., DEF_REGULAR is set). At | |
5763 | this point we have not seen all the input files, so it is | |
5764 | possible that DEF_REGULAR is not set now but will be set | |
5765 | later (it is never cleared). In case of a weak definition, | |
5766 | DEF_REGULAR may be cleared later by a strong definition in | |
5767 | a shared library. We account for that possibility below by | |
f4656909 | 5768 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5769 | table entry. A similar situation occurs when creating |
5770 | shared libraries and symbol visibility changes render the | |
5771 | symbol local. | |
5772 | ||
5773 | If on the other hand, we are creating an executable, we | |
5774 | may need to keep relocations for symbols satisfied by a | |
5775 | dynamic library if we manage to avoid copy relocs for the | |
5776 | symbol. */ | |
411e1bfb | 5777 | dodyn: |
0e1862bb | 5778 | if ((bfd_link_pic (info) |
1d483afe | 5779 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5780 | || (h != NULL |
198f1157 | 5781 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5782 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5783 | || !h->def_regular)))) |
f4656909 | 5784 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 5785 | && !bfd_link_pic (info) |
65f38f15 AM |
5786 | && h != NULL |
5787 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 5788 | || !h->def_regular)) |
0e1862bb | 5789 | || (!bfd_link_pic (info) |
25f23106 | 5790 | && ifunc != NULL)) |
5bd4f169 | 5791 | { |
65f38f15 AM |
5792 | /* We must copy these reloc types into the output file. |
5793 | Create a reloc section in dynobj and make room for | |
5794 | this reloc. */ | |
5bd4f169 AM |
5795 | if (sreloc == NULL) |
5796 | { | |
83bac4b0 NC |
5797 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5798 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5799 | |
5bd4f169 | 5800 | if (sreloc == NULL) |
83bac4b0 | 5801 | return FALSE; |
5bd4f169 AM |
5802 | } |
5803 | ||
65f38f15 AM |
5804 | /* If this is a global symbol, we count the number of |
5805 | relocations we need for this symbol. */ | |
5806 | if (h != NULL) | |
5807 | { | |
19e08130 AM |
5808 | struct elf_dyn_relocs *p; |
5809 | struct elf_dyn_relocs **head; | |
5810 | ||
ec338859 | 5811 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5812 | p = *head; |
5813 | if (p == NULL || p->sec != sec) | |
5814 | { | |
5815 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5816 | if (p == NULL) | |
5817 | return FALSE; | |
5818 | p->next = *head; | |
5819 | *head = p; | |
5820 | p->sec = sec; | |
5821 | p->count = 0; | |
5822 | p->pc_count = 0; | |
5823 | } | |
5824 | p->count += 1; | |
5825 | if (!must_be_dyn_reloc (info, r_type)) | |
5826 | p->pc_count += 1; | |
65f38f15 AM |
5827 | } |
5828 | else | |
5829 | { | |
ec338859 AM |
5830 | /* Track dynamic relocs needed for local syms too. |
5831 | We really need local syms available to do this | |
5832 | easily. Oh well. */ | |
19e08130 AM |
5833 | struct ppc_dyn_relocs *p; |
5834 | struct ppc_dyn_relocs **head; | |
5835 | bfd_boolean is_ifunc; | |
ec338859 | 5836 | asection *s; |
6edfbbad | 5837 | void *vpp; |
87d72d41 | 5838 | Elf_Internal_Sym *isym; |
6edfbbad | 5839 | |
87d72d41 AM |
5840 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5841 | abfd, r_symndx); | |
5842 | if (isym == NULL) | |
b34976b6 | 5843 | return FALSE; |
ec338859 | 5844 | |
87d72d41 AM |
5845 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5846 | if (s == NULL) | |
5847 | s = sec; | |
5848 | ||
6edfbbad | 5849 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5850 | head = (struct ppc_dyn_relocs **) vpp; |
5851 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5852 | p = *head; | |
5853 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5854 | p = p->next; | |
5855 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5856 | { | |
5857 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5858 | if (p == NULL) | |
5859 | return FALSE; | |
5860 | p->next = *head; | |
5861 | *head = p; | |
5862 | p->sec = sec; | |
5863 | p->ifunc = is_ifunc; | |
5864 | p->count = 0; | |
5865 | } | |
5866 | p->count += 1; | |
ec338859 | 5867 | } |
65f38f15 | 5868 | } |
5bd4f169 | 5869 | break; |
65f38f15 AM |
5870 | |
5871 | default: | |
96e0dda4 | 5872 | break; |
5bd4f169 AM |
5873 | } |
5874 | } | |
5875 | ||
b34976b6 | 5876 | return TRUE; |
5bd4f169 AM |
5877 | } |
5878 | ||
ee67d69a AM |
5879 | /* Merge backend specific data from an object file to the output |
5880 | object file when linking. */ | |
5881 | ||
5882 | static bfd_boolean | |
5883 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5884 | { | |
5885 | unsigned long iflags, oflags; | |
5886 | ||
5887 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5888 | return TRUE; | |
5889 | ||
5890 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5891 | return TRUE; | |
5892 | ||
5893 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5894 | return FALSE; | |
5895 | ||
5896 | iflags = elf_elfheader (ibfd)->e_flags; | |
5897 | oflags = elf_elfheader (obfd)->e_flags; | |
5898 | ||
f6c7c3e8 | 5899 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a AM |
5900 | { |
5901 | (*_bfd_error_handler) | |
5902 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
5903 | bfd_set_error (bfd_error_bad_value); | |
5904 | return FALSE; | |
5905 | } | |
f6c7c3e8 | 5906 | else if (iflags != oflags && iflags != 0) |
ee67d69a AM |
5907 | { |
5908 | (*_bfd_error_handler) | |
5909 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
5910 | ibfd, iflags, oflags); | |
5911 | bfd_set_error (bfd_error_bad_value); | |
5912 | return FALSE; | |
5913 | } | |
5914 | ||
5915 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
5916 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
5917 | ||
5918 | return TRUE; | |
5919 | } | |
5920 | ||
5921 | static bfd_boolean | |
5922 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5923 | { | |
5924 | /* Print normal ELF private data. */ | |
5925 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5926 | ||
5927 | if (elf_elfheader (abfd)->e_flags != 0) | |
5928 | { | |
5929 | FILE *file = ptr; | |
5930 | ||
5931 | /* xgettext:c-format */ | |
5932 | fprintf (file, _("private flags = 0x%lx:"), | |
5933 | elf_elfheader (abfd)->e_flags); | |
5934 | ||
5935 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5936 | fprintf (file, _(" [abiv%ld]"), | |
5937 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5938 | fputc ('\n', file); | |
5939 | } | |
5940 | ||
5941 | return TRUE; | |
5942 | } | |
5943 | ||
8387904d | 5944 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5945 | of the code entry point, and its section, which must be in the same |
5946 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5947 | |
5948 | static bfd_vma | |
5949 | opd_entry_value (asection *opd_sec, | |
5950 | bfd_vma offset, | |
5951 | asection **code_sec, | |
aef36ac1 AM |
5952 | bfd_vma *code_off, |
5953 | bfd_boolean in_code_sec) | |
8387904d AM |
5954 | { |
5955 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5956 | Elf_Internal_Rela *relocs; |
8387904d | 5957 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5958 | bfd_vma val; |
8387904d | 5959 | |
9f296da3 AM |
5960 | /* No relocs implies we are linking a --just-symbols object, or looking |
5961 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5962 | if (opd_sec->reloc_count == 0) |
5963 | { | |
729eabd5 | 5964 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5965 | |
729eabd5 AM |
5966 | if (contents == NULL) |
5967 | { | |
5968 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5969 | return (bfd_vma) -1; | |
5970 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5971 | } | |
ee1e4ede | 5972 | |
dbb3fbbb | 5973 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5974 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5975 | return (bfd_vma) -1; |
5976 | ||
729eabd5 | 5977 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5978 | if (code_sec != NULL) |
5979 | { | |
5980 | asection *sec, *likely = NULL; | |
ee1e4ede | 5981 | |
aef36ac1 | 5982 | if (in_code_sec) |
4b85d634 | 5983 | { |
aef36ac1 AM |
5984 | sec = *code_sec; |
5985 | if (sec->vma <= val | |
5986 | && val < sec->vma + sec->size) | |
5987 | likely = sec; | |
5988 | else | |
5989 | val = -1; | |
5990 | } | |
5991 | else | |
5992 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5993 | if (sec->vma <= val | |
5994 | && (sec->flags & SEC_LOAD) != 0 | |
5995 | && (sec->flags & SEC_ALLOC) != 0) | |
5996 | likely = sec; | |
5997 | if (likely != NULL) | |
5998 | { | |
5999 | *code_sec = likely; | |
6000 | if (code_off != NULL) | |
6001 | *code_off = val - likely->vma; | |
4b85d634 AM |
6002 | } |
6003 | } | |
aef36ac1 | 6004 | return val; |
4b85d634 AM |
6005 | } |
6006 | ||
0c8d6e5c | 6007 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6008 | |
729eabd5 | 6009 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6010 | if (relocs == NULL) |
6011 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6012 | /* PR 17512: file: df8e1fd6. */ |
6013 | if (relocs == NULL) | |
6014 | return (bfd_vma) -1; | |
645ea6a9 | 6015 | |
8387904d | 6016 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6017 | lo = relocs; |
8387904d | 6018 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6019 | val = (bfd_vma) -1; |
8387904d AM |
6020 | while (lo < hi) |
6021 | { | |
6022 | look = lo + (hi - lo) / 2; | |
6023 | if (look->r_offset < offset) | |
6024 | lo = look + 1; | |
6025 | else if (look->r_offset > offset) | |
6026 | hi = look; | |
6027 | else | |
6028 | { | |
0ffa91dd NC |
6029 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6030 | ||
8387904d AM |
6031 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6032 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6033 | { | |
6034 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6035 | asection *sec = NULL; |
8387904d | 6036 | |
b53dfeb2 AM |
6037 | if (symndx >= symtab_hdr->sh_info |
6038 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6039 | { |
6040 | struct elf_link_hash_entry **sym_hashes; | |
6041 | struct elf_link_hash_entry *rh; | |
6042 | ||
6043 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6044 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6045 | if (rh != NULL) |
6046 | { | |
6047 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6048 | if (rh->root.type != bfd_link_hash_defined |
6049 | && rh->root.type != bfd_link_hash_defweak) | |
6050 | break; | |
6051 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6052 | { |
bb854a36 AM |
6053 | val = rh->root.u.def.value; |
6054 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6055 | } |
6056 | } | |
6057 | } | |
6058 | ||
6059 | if (sec == NULL) | |
6060 | { | |
6061 | Elf_Internal_Sym *sym; | |
6062 | ||
6063 | if (symndx < symtab_hdr->sh_info) | |
6064 | { | |
6065 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6066 | if (sym == NULL) | |
6067 | { | |
6068 | size_t symcnt = symtab_hdr->sh_info; | |
6069 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6070 | symcnt, 0, | |
6071 | NULL, NULL, NULL); | |
6072 | if (sym == NULL) | |
6073 | break; | |
6074 | symtab_hdr->contents = (bfd_byte *) sym; | |
6075 | } | |
6076 | sym += symndx; | |
128205bb AM |
6077 | } |
6078 | else | |
6079 | { | |
b53dfeb2 AM |
6080 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6081 | 1, symndx, | |
6082 | NULL, NULL, NULL); | |
128205bb AM |
6083 | if (sym == NULL) |
6084 | break; | |
128205bb | 6085 | } |
b53dfeb2 AM |
6086 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6087 | if (sec == NULL) | |
6088 | break; | |
6089 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6090 | val = sym->st_value; | |
8387904d | 6091 | } |
b53dfeb2 | 6092 | |
8387904d AM |
6093 | val += look->r_addend; |
6094 | if (code_off != NULL) | |
6095 | *code_off = val; | |
6096 | if (code_sec != NULL) | |
aef36ac1 AM |
6097 | { |
6098 | if (in_code_sec && *code_sec != sec) | |
6099 | return -1; | |
6100 | else | |
6101 | *code_sec = sec; | |
6102 | } | |
b53dfeb2 | 6103 | if (sec->output_section != NULL) |
8387904d | 6104 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6105 | } |
6106 | break; | |
6107 | } | |
6108 | } | |
645ea6a9 | 6109 | |
645ea6a9 | 6110 | return val; |
8387904d AM |
6111 | } |
6112 | ||
aef36ac1 AM |
6113 | /* If the ELF symbol SYM might be a function in SEC, return the |
6114 | function size and set *CODE_OFF to the function's entry point, | |
6115 | otherwise return zero. */ | |
9f296da3 | 6116 | |
aef36ac1 AM |
6117 | static bfd_size_type |
6118 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6119 | bfd_vma *code_off) | |
9f296da3 | 6120 | { |
aef36ac1 AM |
6121 | bfd_size_type size; |
6122 | ||
6123 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6124 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6125 | return 0; | |
6126 | ||
6127 | size = 0; | |
6128 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6129 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6130 | ||
6131 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6132 | { |
b07bca4e AM |
6133 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6134 | bfd_vma symval = sym->value; | |
6135 | ||
6136 | if (opd != NULL | |
6137 | && opd->adjust != NULL | |
6138 | && elf_section_data (sym->section)->relocs != NULL) | |
6139 | { | |
6140 | /* opd_entry_value will use cached relocs that have been | |
6141 | adjusted, but with raw symbols. That means both local | |
6142 | and global symbols need adjusting. */ | |
6143 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6144 | if (adjust == -1) | |
6145 | return 0; | |
6146 | symval += adjust; | |
6147 | } | |
6148 | ||
6149 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6150 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6151 | return 0; | |
6152 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6153 | symbol. This size has nothing to do with the code size of the | |
6154 | function, which is what we're supposed to return, but the | |
6155 | code size isn't available without looking up the dot-sym. | |
6156 | However, doing that would be a waste of time particularly | |
6157 | since elf_find_function will look at the dot-sym anyway. | |
6158 | Now, elf_find_function will keep the largest size of any | |
6159 | function sym found at the code address of interest, so return | |
6160 | 1 here to avoid it incorrectly caching a larger function size | |
6161 | for a small function. This does mean we return the wrong | |
6162 | size for a new-ABI function of size 24, but all that does is | |
6163 | disable caching for such functions. */ | |
6164 | if (size == 24) | |
6165 | size = 1; | |
9f296da3 | 6166 | } |
aef36ac1 AM |
6167 | else |
6168 | { | |
6169 | if (sym->section != sec) | |
6170 | return 0; | |
6171 | *code_off = sym->value; | |
6172 | } | |
6173 | if (size == 0) | |
6174 | size = 1; | |
6175 | return size; | |
9f296da3 AM |
6176 | } |
6177 | ||
854b41e7 AM |
6178 | /* Return true if symbol is defined in a regular object file. */ |
6179 | ||
6180 | static bfd_boolean | |
6181 | is_static_defined (struct elf_link_hash_entry *h) | |
6182 | { | |
6183 | return ((h->root.type == bfd_link_hash_defined | |
6184 | || h->root.type == bfd_link_hash_defweak) | |
6185 | && h->root.u.def.section != NULL | |
6186 | && h->root.u.def.section->output_section != NULL); | |
6187 | } | |
6188 | ||
b31867b6 AM |
6189 | /* If FDH is a function descriptor symbol, return the associated code |
6190 | entry symbol if it is defined. Return NULL otherwise. */ | |
6191 | ||
6192 | static struct ppc_link_hash_entry * | |
6193 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6194 | { | |
6195 | if (fdh->is_func_descriptor) | |
6196 | { | |
6197 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6198 | if (fh->elf.root.type == bfd_link_hash_defined | |
6199 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6200 | return fh; | |
6201 | } | |
6202 | return NULL; | |
6203 | } | |
6204 | ||
6205 | /* If FH is a function code entry symbol, return the associated | |
6206 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6207 | ||
6208 | static struct ppc_link_hash_entry * | |
6209 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6210 | { | |
6211 | if (fh->oh != NULL | |
6212 | && fh->oh->is_func_descriptor) | |
6213 | { | |
6214 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6215 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6216 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6217 | return fdh; | |
6218 | } | |
6219 | return NULL; | |
6220 | } | |
6221 | ||
74f0fb50 AM |
6222 | /* Mark all our entry sym sections, both opd and code section. */ |
6223 | ||
6224 | static void | |
6225 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6226 | { | |
6227 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6228 | struct bfd_sym_chain *sym; | |
6229 | ||
4dfe6ac6 NC |
6230 | if (htab == NULL) |
6231 | return; | |
6232 | ||
74f0fb50 AM |
6233 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6234 | { | |
b31867b6 | 6235 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6236 | asection *sec; |
6237 | ||
6238 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6239 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6240 | if (eh == NULL) |
6241 | continue; | |
6242 | if (eh->elf.root.type != bfd_link_hash_defined | |
6243 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6244 | continue; | |
6245 | ||
b31867b6 AM |
6246 | fh = defined_code_entry (eh); |
6247 | if (fh != NULL) | |
74f0fb50 | 6248 | { |
b31867b6 | 6249 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6250 | sec->flags |= SEC_KEEP; |
6251 | } | |
6252 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6253 | && opd_entry_value (eh->elf.root.u.def.section, | |
6254 | eh->elf.root.u.def.value, | |
aef36ac1 | 6255 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6256 | sec->flags |= SEC_KEEP; |
6257 | ||
6258 | sec = eh->elf.root.u.def.section; | |
6259 | sec->flags |= SEC_KEEP; | |
6260 | } | |
6261 | } | |
6262 | ||
64d03ab5 AM |
6263 | /* Mark sections containing dynamically referenced symbols. When |
6264 | building shared libraries, we must assume that any visible symbol is | |
6265 | referenced. */ | |
6266 | ||
6267 | static bfd_boolean | |
6268 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6269 | { | |
6270 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6271 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6272 | struct ppc_link_hash_entry *fdh; |
b407645f | 6273 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6274 | |
64d03ab5 | 6275 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6276 | fdh = defined_func_desc (eh); |
6277 | if (fdh != NULL) | |
6278 | eh = fdh; | |
64d03ab5 AM |
6279 | |
6280 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6281 | || eh->elf.root.type == bfd_link_hash_defweak) | |
6282 | && (eh->elf.ref_dynamic | |
1c9177d9 | 6283 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6284 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6285 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6286 | && (!bfd_link_executable (info) |
b407645f AM |
6287 | || info->export_dynamic |
6288 | || (eh->elf.dynamic | |
6289 | && d != NULL | |
6290 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
4c58e0d8 AM |
6291 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
6292 | || !bfd_hide_sym_by_version (info->version_info, | |
6293 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6294 | { |
6295 | asection *code_sec; | |
b31867b6 | 6296 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6297 | |
6298 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6299 | ||
6300 | /* Function descriptor syms cause the associated | |
6301 | function code sym section to be marked. */ | |
b31867b6 AM |
6302 | fh = defined_code_entry (eh); |
6303 | if (fh != NULL) | |
6304 | { | |
6305 | code_sec = fh->elf.root.u.def.section; | |
6306 | code_sec->flags |= SEC_KEEP; | |
6307 | } | |
64d03ab5 AM |
6308 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6309 | && opd_entry_value (eh->elf.root.u.def.section, | |
6310 | eh->elf.root.u.def.value, | |
aef36ac1 | 6311 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6312 | code_sec->flags |= SEC_KEEP; |
6313 | } | |
6314 | ||
6315 | return TRUE; | |
6316 | } | |
6317 | ||
5bd4f169 AM |
6318 | /* Return the section that should be marked against GC for a given |
6319 | relocation. */ | |
6320 | ||
6321 | static asection * | |
4ce794b7 | 6322 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6323 | struct bfd_link_info *info, |
4ce794b7 AM |
6324 | Elf_Internal_Rela *rel, |
6325 | struct elf_link_hash_entry *h, | |
6326 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6327 | { |
ccfa59ea AM |
6328 | asection *rsec; |
6329 | ||
ccfa59ea AM |
6330 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6331 | function sections, as all functions are referenced in .opd. */ | |
6332 | rsec = NULL; | |
6333 | if (get_opd_info (sec) != NULL) | |
6334 | return rsec; | |
1e2f5b6e | 6335 | |
5bd4f169 AM |
6336 | if (h != NULL) |
6337 | { | |
04c9666a | 6338 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6339 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6340 | |
4ce794b7 | 6341 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6342 | switch (r_type) |
5bd4f169 AM |
6343 | { |
6344 | case R_PPC64_GNU_VTINHERIT: | |
6345 | case R_PPC64_GNU_VTENTRY: | |
6346 | break; | |
6347 | ||
6348 | default: | |
6349 | switch (h->root.type) | |
6350 | { | |
6351 | case bfd_link_hash_defined: | |
6352 | case bfd_link_hash_defweak: | |
ccfa59ea | 6353 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6354 | fdh = defined_func_desc (eh); |
6355 | if (fdh != NULL) | |
6356 | eh = fdh; | |
1e2f5b6e AM |
6357 | |
6358 | /* Function descriptor syms cause the associated | |
6359 | function code sym section to be marked. */ | |
b31867b6 AM |
6360 | fh = defined_code_entry (eh); |
6361 | if (fh != NULL) | |
ccfa59ea AM |
6362 | { |
6363 | /* They also mark their opd section. */ | |
74f0fb50 | 6364 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6365 | |
b31867b6 | 6366 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6367 | } |
8387904d AM |
6368 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6369 | && opd_entry_value (eh->elf.root.u.def.section, | |
6370 | eh->elf.root.u.def.value, | |
aef36ac1 | 6371 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6372 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6373 | else |
1e2f5b6e AM |
6374 | rsec = h->root.u.def.section; |
6375 | break; | |
5bd4f169 AM |
6376 | |
6377 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6378 | rsec = h->root.u.c.p->section; |
6379 | break; | |
5bd4f169 AM |
6380 | |
6381 | default: | |
fb34365b | 6382 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6383 | } |
6384 | } | |
6385 | } | |
6386 | else | |
6387 | { | |
74f0fb50 | 6388 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6389 | |
6390 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6391 | opd = get_opd_info (rsec); |
6392 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6393 | { |
74f0fb50 | 6394 | rsec->gc_mark = 1; |
ccfa59ea | 6395 | |
51aecdc5 | 6396 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6397 | } |
5bd4f169 AM |
6398 | } |
6399 | ||
1e2f5b6e | 6400 | return rsec; |
5bd4f169 AM |
6401 | } |
6402 | ||
65f38f15 AM |
6403 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
6404 | section being removed. */ | |
5bd4f169 | 6405 | |
b34976b6 | 6406 | static bfd_boolean |
4ce794b7 AM |
6407 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6408 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6409 | { |
411e1bfb | 6410 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6411 | Elf_Internal_Shdr *symtab_hdr; |
6412 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6413 | struct got_entry **local_got_ents; |
5bd4f169 | 6414 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6415 | |
0e1862bb | 6416 | if (bfd_link_relocatable (info)) |
7dda2462 TG |
6417 | return TRUE; |
6418 | ||
680a3378 AM |
6419 | if ((sec->flags & SEC_ALLOC) == 0) |
6420 | return TRUE; | |
6421 | ||
ec338859 AM |
6422 | elf_section_data (sec)->local_dynrel = NULL; |
6423 | ||
411e1bfb | 6424 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6425 | if (htab == NULL) |
6426 | return FALSE; | |
6427 | ||
0ffa91dd | 6428 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6429 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6430 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6431 | |
6432 | relend = relocs + sec->reloc_count; | |
6433 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6434 | { |
6435 | unsigned long r_symndx; | |
04c9666a | 6436 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6437 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 6438 | unsigned char tls_type = 0; |
5bd4f169 | 6439 | |
a33d1f77 | 6440 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6441 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6442 | if (r_symndx >= symtab_hdr->sh_info) |
6443 | { | |
6444 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6445 | struct elf_dyn_relocs **pp; |
6446 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6447 | |
6448 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6449 | h = elf_follow_link (h); |
58ac9f71 AM |
6450 | eh = (struct ppc_link_hash_entry *) h; |
6451 | ||
6452 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6453 | if (p->sec == sec) | |
6454 | { | |
6455 | /* Everything must go for SEC. */ | |
6456 | *pp = p->next; | |
6457 | break; | |
6458 | } | |
6459 | } | |
6460 | ||
e054468f AM |
6461 | if (is_branch_reloc (r_type)) |
6462 | { | |
6463 | struct plt_entry **ifunc = NULL; | |
6464 | if (h != NULL) | |
6465 | { | |
6466 | if (h->type == STT_GNU_IFUNC) | |
6467 | ifunc = &h->plt.plist; | |
6468 | } | |
6469 | else if (local_got_ents != NULL) | |
6470 | { | |
6471 | struct plt_entry **local_plt = (struct plt_entry **) | |
6472 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 6473 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
6474 | (local_plt + symtab_hdr->sh_info); |
6475 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6476 | ifunc = local_plt + r_symndx; | |
6477 | } | |
6478 | if (ifunc != NULL) | |
6479 | { | |
6480 | struct plt_entry *ent; | |
6481 | ||
6482 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
6483 | if (ent->addend == rel->r_addend) | |
6484 | break; | |
6485 | if (ent == NULL) | |
6486 | abort (); | |
6487 | if (ent->plt.refcount > 0) | |
6488 | ent->plt.refcount -= 1; | |
6489 | continue; | |
6490 | } | |
6491 | } | |
6492 | ||
a33d1f77 AM |
6493 | switch (r_type) |
6494 | { | |
411e1bfb AM |
6495 | case R_PPC64_GOT_TLSLD16: |
6496 | case R_PPC64_GOT_TLSLD16_LO: | |
6497 | case R_PPC64_GOT_TLSLD16_HI: | |
6498 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6499 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6500 | goto dogot; |
6501 | ||
6502 | case R_PPC64_GOT_TLSGD16: | |
6503 | case R_PPC64_GOT_TLSGD16_LO: | |
6504 | case R_PPC64_GOT_TLSGD16_HI: | |
6505 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6506 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6507 | goto dogot; |
6508 | ||
6509 | case R_PPC64_GOT_TPREL16_DS: | |
6510 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6511 | case R_PPC64_GOT_TPREL16_HI: | |
6512 | case R_PPC64_GOT_TPREL16_HA: | |
6513 | tls_type = TLS_TLS | TLS_TPREL; | |
6514 | goto dogot; | |
6515 | ||
6516 | case R_PPC64_GOT_DTPREL16_DS: | |
6517 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6518 | case R_PPC64_GOT_DTPREL16_HI: | |
6519 | case R_PPC64_GOT_DTPREL16_HA: | |
6520 | tls_type = TLS_TLS | TLS_DTPREL; | |
6521 | goto dogot; | |
6522 | ||
a33d1f77 AM |
6523 | case R_PPC64_GOT16: |
6524 | case R_PPC64_GOT16_DS: | |
6525 | case R_PPC64_GOT16_HA: | |
6526 | case R_PPC64_GOT16_HI: | |
6527 | case R_PPC64_GOT16_LO: | |
6528 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6529 | dogot: |
6530 | { | |
6531 | struct got_entry *ent; | |
6532 | ||
58ac9f71 AM |
6533 | if (h != NULL) |
6534 | ent = h->got.glist; | |
411e1bfb AM |
6535 | else |
6536 | ent = local_got_ents[r_symndx]; | |
6537 | ||
6538 | for (; ent != NULL; ent = ent->next) | |
6539 | if (ent->addend == rel->r_addend | |
e717da7e | 6540 | && ent->owner == abfd |
411e1bfb AM |
6541 | && ent->tls_type == tls_type) |
6542 | break; | |
6543 | if (ent == NULL) | |
6544 | abort (); | |
6545 | if (ent->got.refcount > 0) | |
6546 | ent->got.refcount -= 1; | |
6547 | } | |
a33d1f77 | 6548 | break; |
65f38f15 | 6549 | |
a33d1f77 AM |
6550 | case R_PPC64_PLT16_HA: |
6551 | case R_PPC64_PLT16_HI: | |
6552 | case R_PPC64_PLT16_LO: | |
6553 | case R_PPC64_PLT32: | |
6554 | case R_PPC64_PLT64: | |
721956f4 AM |
6555 | case R_PPC64_REL14: |
6556 | case R_PPC64_REL14_BRNTAKEN: | |
6557 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6558 | case R_PPC64_REL24: |
58ac9f71 | 6559 | if (h != NULL) |
5d1634d7 | 6560 | { |
411e1bfb AM |
6561 | struct plt_entry *ent; |
6562 | ||
411e1bfb AM |
6563 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
6564 | if (ent->addend == rel->r_addend) | |
6565 | break; | |
7c6c1722 | 6566 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6567 | ent->plt.refcount -= 1; |
5d1634d7 | 6568 | } |
e86ce104 | 6569 | break; |
5d1634d7 | 6570 | |
a33d1f77 AM |
6571 | default: |
6572 | break; | |
6573 | } | |
6574 | } | |
b34976b6 | 6575 | return TRUE; |
5bd4f169 AM |
6576 | } |
6577 | ||
deb0e272 AM |
6578 | /* The maximum size of .sfpr. */ |
6579 | #define SFPR_MAX (218*4) | |
6580 | ||
6581 | struct sfpr_def_parms | |
6582 | { | |
699733f6 AM |
6583 | const char name[12]; |
6584 | unsigned char lo, hi; | |
deb0e272 AM |
6585 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6586 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6587 | }; | |
6588 | ||
a4b6fadd AM |
6589 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6590 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6591 | instead. */ | |
deb0e272 | 6592 | |
4dfe6ac6 | 6593 | static bfd_boolean |
a4b6fadd AM |
6594 | sfpr_define (struct bfd_link_info *info, |
6595 | const struct sfpr_def_parms *parm, | |
6596 | asection *stub_sec) | |
deb0e272 AM |
6597 | { |
6598 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6599 | unsigned int i; | |
6600 | size_t len = strlen (parm->name); | |
6601 | bfd_boolean writing = FALSE; | |
699733f6 | 6602 | char sym[16]; |
deb0e272 | 6603 | |
4dfe6ac6 NC |
6604 | if (htab == NULL) |
6605 | return FALSE; | |
6606 | ||
deb0e272 AM |
6607 | memcpy (sym, parm->name, len); |
6608 | sym[len + 2] = 0; | |
6609 | ||
6610 | for (i = parm->lo; i <= parm->hi; i++) | |
6611 | { | |
a4b6fadd | 6612 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6613 | |
6614 | sym[len + 0] = i / 10 + '0'; | |
6615 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd AM |
6616 | h = (struct ppc_link_hash_entry *) |
6617 | elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6618 | if (stub_sec != NULL) | |
deb0e272 | 6619 | { |
a4b6fadd AM |
6620 | if (h != NULL |
6621 | && h->elf.root.type == bfd_link_hash_defined | |
6622 | && h->elf.root.u.def.section == htab->sfpr) | |
6623 | { | |
6624 | struct elf_link_hash_entry *s; | |
6625 | char buf[32]; | |
6626 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6627 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6628 | if (s == NULL) | |
6629 | return FALSE; | |
6630 | if (s->root.type == bfd_link_hash_new | |
6631 | || (s->root.type = bfd_link_hash_defined | |
6632 | && s->root.u.def.section == stub_sec)) | |
6633 | { | |
6634 | s->root.type = bfd_link_hash_defined; | |
6635 | s->root.u.def.section = stub_sec; | |
6636 | s->root.u.def.value = (stub_sec->size | |
6637 | + h->elf.root.u.def.value); | |
6638 | s->ref_regular = 1; | |
6639 | s->def_regular = 1; | |
6640 | s->ref_regular_nonweak = 1; | |
6641 | s->forced_local = 1; | |
6642 | s->non_elf = 0; | |
6643 | s->root.linker_def = 1; | |
6644 | } | |
6645 | } | |
6646 | continue; | |
6647 | } | |
6648 | if (h != NULL) | |
6649 | { | |
6650 | h->save_res = 1; | |
6651 | if (!h->elf.def_regular) | |
deb0e272 | 6652 | { |
a4b6fadd AM |
6653 | h->elf.root.type = bfd_link_hash_defined; |
6654 | h->elf.root.u.def.section = htab->sfpr; | |
6655 | h->elf.root.u.def.value = htab->sfpr->size; | |
6656 | h->elf.type = STT_FUNC; | |
6657 | h->elf.def_regular = 1; | |
6658 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); | |
6659 | writing = TRUE; | |
deb0e272 | 6660 | if (htab->sfpr->contents == NULL) |
a4b6fadd AM |
6661 | { |
6662 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6663 | if (htab->sfpr->contents == NULL) | |
6664 | return FALSE; | |
6665 | } | |
deb0e272 AM |
6666 | } |
6667 | } | |
6668 | if (writing) | |
6669 | { | |
6670 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6671 | if (i != parm->hi) | |
6672 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6673 | else | |
6674 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6675 | htab->sfpr->size = p - htab->sfpr->contents; | |
6676 | } | |
6677 | } | |
6678 | ||
6679 | return TRUE; | |
6680 | } | |
6681 | ||
6682 | static bfd_byte * | |
6683 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6684 | { | |
6685 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6686 | return p + 4; | |
6687 | } | |
6688 | ||
6689 | static bfd_byte * | |
6690 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6691 | { | |
6692 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6693 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6694 | p = p + 4; |
6695 | bfd_put_32 (abfd, BLR, p); | |
6696 | return p + 4; | |
6697 | } | |
6698 | ||
6699 | static bfd_byte * | |
6700 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6701 | { | |
6702 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6703 | return p + 4; | |
6704 | } | |
6705 | ||
6706 | static bfd_byte * | |
6707 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6708 | { | |
a078d95a | 6709 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6710 | p = p + 4; |
6711 | p = restgpr0 (abfd, p, r); | |
6712 | bfd_put_32 (abfd, MTLR_R0, p); | |
6713 | p = p + 4; | |
6714 | if (r == 29) | |
6715 | { | |
6716 | p = restgpr0 (abfd, p, 30); | |
6717 | p = restgpr0 (abfd, p, 31); | |
6718 | } | |
6719 | bfd_put_32 (abfd, BLR, p); | |
6720 | return p + 4; | |
6721 | } | |
6722 | ||
6723 | static bfd_byte * | |
6724 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6725 | { | |
6726 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6727 | return p + 4; | |
6728 | } | |
6729 | ||
6730 | static bfd_byte * | |
6731 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6732 | { | |
6733 | p = savegpr1 (abfd, p, r); | |
6734 | bfd_put_32 (abfd, BLR, p); | |
6735 | return p + 4; | |
6736 | } | |
6737 | ||
6738 | static bfd_byte * | |
6739 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6740 | { | |
6741 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6742 | return p + 4; | |
6743 | } | |
6744 | ||
6745 | static bfd_byte * | |
6746 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6747 | { | |
6748 | p = restgpr1 (abfd, p, r); | |
6749 | bfd_put_32 (abfd, BLR, p); | |
6750 | return p + 4; | |
6751 | } | |
6752 | ||
6753 | static bfd_byte * | |
6754 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6755 | { | |
6756 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6757 | return p + 4; | |
6758 | } | |
6759 | ||
6760 | static bfd_byte * | |
6761 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6762 | { | |
6763 | p = savefpr (abfd, p, r); | |
a078d95a | 6764 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6765 | p = p + 4; |
6766 | bfd_put_32 (abfd, BLR, p); | |
6767 | return p + 4; | |
6768 | } | |
6769 | ||
6770 | static bfd_byte * | |
6771 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6772 | { | |
6773 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6774 | return p + 4; | |
6775 | } | |
6776 | ||
6777 | static bfd_byte * | |
6778 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6779 | { | |
a078d95a | 6780 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6781 | p = p + 4; |
6782 | p = restfpr (abfd, p, r); | |
6783 | bfd_put_32 (abfd, MTLR_R0, p); | |
6784 | p = p + 4; | |
6785 | if (r == 29) | |
6786 | { | |
6787 | p = restfpr (abfd, p, 30); | |
6788 | p = restfpr (abfd, p, 31); | |
6789 | } | |
6790 | bfd_put_32 (abfd, BLR, p); | |
6791 | return p + 4; | |
6792 | } | |
6793 | ||
6794 | static bfd_byte * | |
6795 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6796 | { | |
6797 | p = savefpr (abfd, p, r); | |
6798 | bfd_put_32 (abfd, BLR, p); | |
6799 | return p + 4; | |
6800 | } | |
6801 | ||
6802 | static bfd_byte * | |
6803 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6804 | { | |
6805 | p = restfpr (abfd, p, r); | |
6806 | bfd_put_32 (abfd, BLR, p); | |
6807 | return p + 4; | |
6808 | } | |
6809 | ||
6810 | static bfd_byte * | |
6811 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6812 | { | |
6813 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6814 | p = p + 4; | |
6815 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6816 | return p + 4; | |
6817 | } | |
6818 | ||
6819 | static bfd_byte * | |
6820 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6821 | { | |
6822 | p = savevr (abfd, p, r); | |
6823 | bfd_put_32 (abfd, BLR, p); | |
6824 | return p + 4; | |
6825 | } | |
6826 | ||
6827 | static bfd_byte * | |
6828 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6829 | { | |
6830 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6831 | p = p + 4; | |
6832 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6833 | return p + 4; | |
6834 | } | |
6835 | ||
6836 | static bfd_byte * | |
6837 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6838 | { | |
6839 | p = restvr (abfd, p, r); | |
6840 | bfd_put_32 (abfd, BLR, p); | |
6841 | return p + 4; | |
6842 | } | |
6843 | ||
e86ce104 AM |
6844 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6845 | information on function code symbol entries to their corresponding | |
6846 | function descriptor symbol entries. */ | |
deb0e272 | 6847 | |
b34976b6 | 6848 | static bfd_boolean |
4ce794b7 | 6849 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6850 | { |
e86ce104 | 6851 | struct bfd_link_info *info; |
65f38f15 | 6852 | struct ppc_link_hash_table *htab; |
411e1bfb | 6853 | struct plt_entry *ent; |
50bc7936 AM |
6854 | struct ppc_link_hash_entry *fh; |
6855 | struct ppc_link_hash_entry *fdh; | |
6856 | bfd_boolean force_local; | |
5bd4f169 | 6857 | |
50bc7936 AM |
6858 | fh = (struct ppc_link_hash_entry *) h; |
6859 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6860 | return TRUE; |
e86ce104 | 6861 | |
4ce794b7 | 6862 | info = inf; |
65f38f15 | 6863 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6864 | if (htab == NULL) |
6865 | return FALSE; | |
5bd4f169 | 6866 | |
c09bdfe5 AM |
6867 | /* Resolve undefined references to dot-symbols as the value |
6868 | in the function descriptor, if we have one in a regular object. | |
6869 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6870 | in dynamic objects are handled elsewhere. */ | |
6871 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6872 | && fh->was_undefined | |
b31867b6 AM |
6873 | && (fdh = defined_func_desc (fh)) != NULL |
6874 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6875 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6876 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6877 | &fh->elf.root.u.def.section, |
aef36ac1 | 6878 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6879 | { |
b31867b6 | 6880 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6881 | fh->elf.forced_local = 1; |
b31867b6 AM |
6882 | fh->elf.def_regular = fdh->elf.def_regular; |
6883 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6884 | } |
6885 | ||
e86ce104 AM |
6886 | /* If this is a function code symbol, transfer dynamic linking |
6887 | information to the function descriptor symbol. */ | |
50bc7936 | 6888 | if (!fh->is_func) |
b34976b6 | 6889 | return TRUE; |
e86ce104 | 6890 | |
50bc7936 | 6891 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6892 | if (ent->plt.refcount > 0) |
6893 | break; | |
50bc7936 AM |
6894 | if (ent == NULL |
6895 | || fh->elf.root.root.string[0] != '.' | |
6896 | || fh->elf.root.root.string[1] == '\0') | |
6897 | return TRUE; | |
5bd4f169 | 6898 | |
50bc7936 AM |
6899 | /* Find the corresponding function descriptor symbol. Create it |
6900 | as undefined if necessary. */ | |
5bd4f169 | 6901 | |
b31867b6 | 6902 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6903 | if (fdh == NULL |
0e1862bb | 6904 | && !bfd_link_executable (info) |
50bc7936 AM |
6905 | && (fh->elf.root.type == bfd_link_hash_undefined |
6906 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6907 | { | |
908b32fc | 6908 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6909 | if (fdh == NULL) |
6910 | return FALSE; | |
50bc7936 | 6911 | } |
648cca2c | 6912 | |
908b32fc | 6913 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6914 | code symbol is strong undefined, make the fake sym the same. |
6915 | If the function code symbol is defined, then force the fake | |
6916 | descriptor local; We can't support overriding of symbols in a | |
6917 | shared library on a fake descriptor. */ | |
908b32fc AM |
6918 | |
6919 | if (fdh != NULL | |
6920 | && fdh->fake | |
433817dd | 6921 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6922 | { |
433817dd AM |
6923 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6924 | { | |
6925 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6926 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6927 | } | |
6928 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6929 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6930 | { | |
6931 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6932 | } | |
908b32fc AM |
6933 | } |
6934 | ||
50bc7936 | 6935 | if (fdh != NULL |
f5385ebf | 6936 | && !fdh->elf.forced_local |
0e1862bb | 6937 | && (!bfd_link_executable (info) |
f5385ebf AM |
6938 | || fdh->elf.def_dynamic |
6939 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6940 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6941 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6942 | { | |
6943 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6944 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6945 | return FALSE; |
f5385ebf AM |
6946 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6947 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6948 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6949 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6950 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6951 | { |
40d16e0b | 6952 | move_plt_plist (fh, fdh); |
f5385ebf | 6953 | fdh->elf.needs_plt = 1; |
e86ce104 | 6954 | } |
50bc7936 | 6955 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6956 | fdh->oh = fh; |
6957 | fh->oh = fdh; | |
e86ce104 AM |
6958 | } |
6959 | ||
50bc7936 AM |
6960 | /* Now that the info is on the function descriptor, clear the |
6961 | function code sym info. Any function code syms for which we | |
6962 | don't have a definition in a regular file, we force local. | |
6963 | This prevents a shared library from exporting syms that have | |
6964 | been imported from another library. Function code syms that | |
6965 | are really in the library we must leave global to prevent the | |
6966 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6967 | force_local = (!fh->elf.def_regular |
6968 | || fdh == NULL | |
6969 | || !fdh->elf.def_regular | |
6970 | || fdh->elf.forced_local); | |
50bc7936 AM |
6971 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6972 | ||
b34976b6 | 6973 | return TRUE; |
e86ce104 | 6974 | } |
40b8271b | 6975 | |
a4b6fadd AM |
6976 | static const struct sfpr_def_parms save_res_funcs[] = |
6977 | { | |
6978 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6979 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6980 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6981 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6982 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6983 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6984 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6985 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6986 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6987 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6988 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6989 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6990 | }; | |
6991 | ||
e86ce104 | 6992 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6993 | this hook to a) provide some gcc support functions, and b) transfer |
6994 | dynamic linking information gathered so far on function code symbol | |
6995 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6996 | |
b34976b6 | 6997 | static bfd_boolean |
4ce794b7 AM |
6998 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6999 | struct bfd_link_info *info) | |
e86ce104 AM |
7000 | { |
7001 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 7002 | unsigned int i; |
e86ce104 AM |
7003 | |
7004 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7005 | if (htab == NULL) |
7006 | return FALSE; | |
7007 | ||
0e1862bb | 7008 | if (!bfd_link_relocatable (info) |
5295321c | 7009 | && htab->elf.hgot != NULL) |
dba6fa9b AM |
7010 | { |
7011 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7012 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7013 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7014 | if (!htab->elf.hgot->def_regular |
7015 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7016 | { | |
7017 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7018 | htab->elf.hgot->root.u.def.value = 0; | |
7019 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7020 | htab->elf.hgot->def_regular = 1; | |
7021 | htab->elf.hgot->root.linker_def = 1; | |
7022 | } | |
dba6fa9b | 7023 | htab->elf.hgot->type = STT_OBJECT; |
dba6fa9b AM |
7024 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
7025 | | STV_HIDDEN); | |
7026 | } | |
c66bb0ee | 7027 | |
82bd7b59 AM |
7028 | if (htab->sfpr == NULL) |
7029 | /* We don't have any relocs. */ | |
b34976b6 | 7030 | return TRUE; |
82bd7b59 | 7031 | |
deb0e272 AM |
7032 | /* Provide any missing _save* and _rest* functions. */ |
7033 | htab->sfpr->size = 0; | |
7d4c687d | 7034 | if (htab->params->save_restore_funcs) |
a4b6fadd AM |
7035 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) |
7036 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
27fc25a1 | 7037 | return FALSE; |
82bd7b59 | 7038 | |
4ce794b7 | 7039 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 7040 | |
eea6121a | 7041 | if (htab->sfpr->size == 0) |
8423293d | 7042 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 7043 | |
b34976b6 | 7044 | return TRUE; |
e86ce104 AM |
7045 | } |
7046 | ||
a345bc8d AM |
7047 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
7048 | ||
7049 | static bfd_boolean | |
7050 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7051 | { | |
7052 | struct ppc_link_hash_entry *eh; | |
7053 | struct elf_dyn_relocs *p; | |
7054 | ||
7055 | eh = (struct ppc_link_hash_entry *) h; | |
7056 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7057 | { | |
7058 | asection *s = p->sec->output_section; | |
7059 | ||
7060 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7061 | return TRUE; | |
7062 | } | |
7063 | return FALSE; | |
7064 | } | |
7065 | ||
e86ce104 AM |
7066 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7067 | regular object. The current definition is in some section of the | |
7068 | dynamic object, but we're not including those sections. We have to | |
7069 | change the definition to something the rest of the link can | |
7070 | understand. */ | |
7071 | ||
b34976b6 | 7072 | static bfd_boolean |
4ce794b7 AM |
7073 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7074 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7075 | { |
7076 | struct ppc_link_hash_table *htab; | |
e86ce104 | 7077 | asection *s; |
e86ce104 AM |
7078 | |
7079 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7080 | if (htab == NULL) |
7081 | return FALSE; | |
e86ce104 AM |
7082 | |
7083 | /* Deal with function syms. */ | |
7084 | if (h->type == STT_FUNC | |
e054468f | 7085 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7086 | || h->needs_plt) |
e86ce104 AM |
7087 | { |
7088 | /* Clear procedure linkage table information for any symbol that | |
7089 | won't need a .plt entry. */ | |
411e1bfb AM |
7090 | struct plt_entry *ent; |
7091 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7092 | if (ent->plt.refcount > 0) | |
7093 | break; | |
8387904d | 7094 | if (ent == NULL |
e054468f AM |
7095 | || (h->type != STT_GNU_IFUNC |
7096 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7097 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
a4b6fadd AM |
7098 | && h->root.type == bfd_link_hash_undefweak))) |
7099 | || ((struct ppc_link_hash_entry *) h)->save_res) | |
40b8271b | 7100 | { |
411e1bfb | 7101 | h->plt.plist = NULL; |
f5385ebf | 7102 | h->needs_plt = 0; |
d1eca1e4 | 7103 | h->pointer_equality_needed = 0; |
40b8271b | 7104 | } |
a345bc8d AM |
7105 | else if (abiversion (info->output_bfd) == 2) |
7106 | { | |
d1eca1e4 AM |
7107 | /* Taking a function's address in a read/write section |
7108 | doesn't require us to define the function symbol in the | |
7109 | executable on a global entry stub. A dynamic reloc can | |
7110 | be used instead. */ | |
7111 | if (h->pointer_equality_needed | |
1009ef28 | 7112 | && h->type != STT_GNU_IFUNC |
d1eca1e4 AM |
7113 | && !readonly_dynrelocs (h)) |
7114 | { | |
7115 | h->pointer_equality_needed = 0; | |
7116 | h->non_got_ref = 0; | |
7117 | } | |
7118 | ||
a345bc8d AM |
7119 | /* After adjust_dynamic_symbol, non_got_ref set in the |
7120 | non-shared case means that we have allocated space in | |
7121 | .dynbss for the symbol and thus dyn_relocs for this | |
7122 | symbol should be discarded. | |
7123 | If we get here we know we are making a PLT entry for this | |
7124 | symbol, and in an executable we'd normally resolve | |
7125 | relocations against this symbol to the PLT entry. Allow | |
7126 | dynamic relocs if the reference is weak, and the dynamic | |
7127 | relocs will not cause text relocation. */ | |
d1eca1e4 AM |
7128 | else if (!h->ref_regular_nonweak |
7129 | && h->non_got_ref | |
7130 | && h->type != STT_GNU_IFUNC | |
7131 | && !readonly_dynrelocs (h)) | |
a345bc8d AM |
7132 | h->non_got_ref = 0; |
7133 | ||
7134 | /* If making a plt entry, then we don't need copy relocs. */ | |
7135 | return TRUE; | |
7136 | } | |
5bd4f169 | 7137 | } |
bbd7ec4a | 7138 | else |
411e1bfb | 7139 | h->plt.plist = NULL; |
5bd4f169 AM |
7140 | |
7141 | /* If this is a weak symbol, and there is a real definition, the | |
7142 | processor independent code will have arranged for us to see the | |
7143 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 7144 | if (h->u.weakdef != NULL) |
5bd4f169 | 7145 | { |
f6e332e6 AM |
7146 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
7147 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
7148 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
7149 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 7150 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 7151 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 7152 | return TRUE; |
5bd4f169 AM |
7153 | } |
7154 | ||
5bd4f169 AM |
7155 | /* If we are creating a shared library, we must presume that the |
7156 | only references to the symbol are via the global offset table. | |
7157 | For such cases we need not do anything here; the relocations will | |
7158 | be handled correctly by relocate_section. */ | |
0e1862bb | 7159 | if (bfd_link_pic (info)) |
b34976b6 | 7160 | return TRUE; |
5bd4f169 | 7161 | |
65f38f15 AM |
7162 | /* If there are no references to this symbol that do not use the |
7163 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7164 | if (!h->non_got_ref) |
b34976b6 | 7165 | return TRUE; |
65f38f15 | 7166 | |
b186458a JJ |
7167 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
7168 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
7169 | return TRUE; | |
7170 | ||
a127494f AM |
7171 | /* If -z nocopyreloc was given, don't generate them either. */ |
7172 | if (info->nocopyreloc) | |
7173 | { | |
7174 | h->non_got_ref = 0; | |
7175 | return TRUE; | |
7176 | } | |
7177 | ||
a345bc8d AM |
7178 | /* If we didn't find any dynamic relocs in read-only sections, then |
7179 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
7180 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
65f38f15 | 7181 | { |
a345bc8d AM |
7182 | h->non_got_ref = 0; |
7183 | return TRUE; | |
65f38f15 AM |
7184 | } |
7185 | ||
a127494f AM |
7186 | /* Protected variables do not work with .dynbss. The copy in |
7187 | .dynbss won't be used by the shared library with the protected | |
7188 | definition for the variable. Text relocations are preferable | |
7189 | to an incorrect program. */ | |
7190 | if (h->protected_def) | |
7191 | { | |
7192 | h->non_got_ref = 0; | |
7193 | return TRUE; | |
7194 | } | |
7195 | ||
5d35169e | 7196 | if (h->plt.plist != NULL) |
97b639ba AM |
7197 | { |
7198 | /* We should never get here, but unfortunately there are versions | |
7199 | of gcc out there that improperly (for this ABI) put initialized | |
7200 | function pointers, vtable refs and suchlike in read-only | |
7201 | sections. Allow them to proceed, but warn that this might | |
7202 | break at runtime. */ | |
25f53a85 | 7203 | info->callbacks->einfo |
bc30df16 | 7204 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 7205 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7206 | h->root.root.string); |
7207 | } | |
5d35169e AM |
7208 | |
7209 | /* This is a reference to a symbol defined by a dynamic object which | |
7210 | is not a function. */ | |
7211 | ||
5bd4f169 AM |
7212 | /* We must allocate the symbol in our .dynbss section, which will |
7213 | become part of the .bss section of the executable. There will be | |
7214 | an entry for this symbol in the .dynsym section. The dynamic | |
7215 | object will contain position independent code, so all references | |
7216 | from the dynamic object to this symbol will go through the global | |
7217 | offset table. The dynamic linker will use the .dynsym entry to | |
7218 | determine the address it must put in the global offset table, so | |
7219 | both the dynamic object and the regular object will refer to the | |
7220 | same memory location for the variable. */ | |
5bd4f169 | 7221 | |
04c9666a AM |
7222 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
7223 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
7224 | runtime process image. We need to remember the offset into the |
7225 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 7226 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7227 | { |
eea6121a | 7228 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7229 | h->needs_copy = 1; |
5bd4f169 AM |
7230 | } |
7231 | ||
4ce794b7 | 7232 | s = htab->dynbss; |
5bd4f169 | 7233 | |
6cabe1ea | 7234 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7235 | } |
7236 | ||
e86ce104 AM |
7237 | /* If given a function descriptor symbol, hide both the function code |
7238 | sym and the descriptor. */ | |
7239 | static void | |
4ce794b7 AM |
7240 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7241 | struct elf_link_hash_entry *h, | |
7242 | bfd_boolean force_local) | |
e86ce104 | 7243 | { |
34814b9f | 7244 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7245 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7246 | ||
34814b9f AM |
7247 | eh = (struct ppc_link_hash_entry *) h; |
7248 | if (eh->is_func_descriptor) | |
e86ce104 | 7249 | { |
34814b9f | 7250 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7251 | |
721956f4 | 7252 | if (fh == NULL) |
d1329ca3 AM |
7253 | { |
7254 | const char *p, *q; | |
7255 | struct ppc_link_hash_table *htab; | |
7256 | char save; | |
7257 | ||
7258 | /* We aren't supposed to use alloca in BFD because on | |
7259 | systems which do not have alloca the version in libiberty | |
7260 | calls xmalloc, which might cause the program to crash | |
7261 | when it runs out of memory. This function doesn't have a | |
7262 | return status, so there's no way to gracefully return an | |
7263 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7264 | accessed; It's either a string in an ELF string table, |
7265 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7266 | |
34814b9f | 7267 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7268 | save = *p; |
7269 | *(char *) p = '.'; | |
7270 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7271 | if (htab == NULL) |
7272 | return; | |
7273 | ||
34814b9f AM |
7274 | fh = (struct ppc_link_hash_entry *) |
7275 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7276 | *(char *) p = save; |
7277 | ||
7278 | /* Unfortunately, if it so happens that the string we were | |
7279 | looking for was allocated immediately before this string, | |
7280 | then we overwrote the string terminator. That's the only | |
7281 | reason the lookup should fail. */ | |
7282 | if (fh == NULL) | |
7283 | { | |
34814b9f AM |
7284 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7285 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7286 | --q, --p; |
34814b9f AM |
7287 | if (q < eh->elf.root.root.string && *p == '.') |
7288 | fh = (struct ppc_link_hash_entry *) | |
7289 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7290 | } |
7291 | if (fh != NULL) | |
7292 | { | |
34814b9f AM |
7293 | eh->oh = fh; |
7294 | fh->oh = eh; | |
d1329ca3 AM |
7295 | } |
7296 | } | |
e86ce104 | 7297 | if (fh != NULL) |
34814b9f | 7298 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7299 | } |
7300 | } | |
7301 | ||
411e1bfb | 7302 | static bfd_boolean |
8843416a AM |
7303 | get_sym_h (struct elf_link_hash_entry **hp, |
7304 | Elf_Internal_Sym **symp, | |
7305 | asection **symsecp, | |
f961d9dd | 7306 | unsigned char **tls_maskp, |
8843416a AM |
7307 | Elf_Internal_Sym **locsymsp, |
7308 | unsigned long r_symndx, | |
7309 | bfd *ibfd) | |
411e1bfb | 7310 | { |
0ffa91dd | 7311 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7312 | |
7313 | if (r_symndx >= symtab_hdr->sh_info) | |
7314 | { | |
7315 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7316 | struct elf_link_hash_entry *h; | |
7317 | ||
7318 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7319 | h = elf_follow_link (h); |
411e1bfb AM |
7320 | |
7321 | if (hp != NULL) | |
7322 | *hp = h; | |
7323 | ||
7324 | if (symp != NULL) | |
7325 | *symp = NULL; | |
7326 | ||
7327 | if (symsecp != NULL) | |
7328 | { | |
7329 | asection *symsec = NULL; | |
7330 | if (h->root.type == bfd_link_hash_defined | |
7331 | || h->root.type == bfd_link_hash_defweak) | |
7332 | symsec = h->root.u.def.section; | |
7333 | *symsecp = symsec; | |
7334 | } | |
7335 | ||
e7b938ca | 7336 | if (tls_maskp != NULL) |
411e1bfb AM |
7337 | { |
7338 | struct ppc_link_hash_entry *eh; | |
7339 | ||
7340 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7341 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7342 | } |
7343 | } | |
7344 | else | |
7345 | { | |
7346 | Elf_Internal_Sym *sym; | |
7347 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7348 | ||
7349 | if (locsyms == NULL) | |
7350 | { | |
7351 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7352 | if (locsyms == NULL) | |
7353 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7354 | symtab_hdr->sh_info, | |
7355 | 0, NULL, NULL, NULL); | |
7356 | if (locsyms == NULL) | |
7357 | return FALSE; | |
7358 | *locsymsp = locsyms; | |
7359 | } | |
7360 | sym = locsyms + r_symndx; | |
7361 | ||
7362 | if (hp != NULL) | |
7363 | *hp = NULL; | |
7364 | ||
7365 | if (symp != NULL) | |
7366 | *symp = sym; | |
7367 | ||
7368 | if (symsecp != NULL) | |
cb33740c | 7369 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7370 | |
e7b938ca | 7371 | if (tls_maskp != NULL) |
411e1bfb AM |
7372 | { |
7373 | struct got_entry **lgot_ents; | |
f961d9dd | 7374 | unsigned char *tls_mask; |
411e1bfb | 7375 | |
e7b938ca | 7376 | tls_mask = NULL; |
411e1bfb AM |
7377 | lgot_ents = elf_local_got_ents (ibfd); |
7378 | if (lgot_ents != NULL) | |
7379 | { | |
e054468f AM |
7380 | struct plt_entry **local_plt = (struct plt_entry **) |
7381 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7382 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7383 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7384 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7385 | } |
e7b938ca | 7386 | *tls_maskp = tls_mask; |
411e1bfb AM |
7387 | } |
7388 | } | |
7389 | return TRUE; | |
7390 | } | |
7391 | ||
e7b938ca | 7392 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7393 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7394 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7395 | |
7396 | static int | |
f961d9dd | 7397 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7398 | unsigned long *toc_symndx, |
7399 | bfd_vma *toc_addend, | |
0d4792f7 | 7400 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7401 | const Elf_Internal_Rela *rel, |
7402 | bfd *ibfd) | |
411e1bfb AM |
7403 | { |
7404 | unsigned long r_symndx; | |
0d4792f7 | 7405 | int next_r; |
411e1bfb AM |
7406 | struct elf_link_hash_entry *h; |
7407 | Elf_Internal_Sym *sym; | |
7408 | asection *sec; | |
7409 | bfd_vma off; | |
7410 | ||
7411 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7412 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7413 | return 0; |
411e1bfb | 7414 | |
e7b938ca | 7415 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7416 | || sec == NULL |
6bee8834 | 7417 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7418 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7419 | return 1; |
411e1bfb AM |
7420 | |
7421 | /* Look inside a TOC section too. */ | |
7422 | if (h != NULL) | |
7423 | { | |
7424 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7425 | off = h->root.u.def.value; | |
7426 | } | |
7427 | else | |
7428 | off = sym->st_value; | |
7429 | off += rel->r_addend; | |
7430 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7431 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7432 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7433 | if (toc_symndx != NULL) |
7434 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7435 | if (toc_addend != NULL) |
7436 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7437 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7438 | return 0; | |
854b41e7 | 7439 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7440 | && (next_r == -1 || next_r == -2)) |
7441 | return 1 - next_r; | |
951fd09b | 7442 | return 1; |
411e1bfb AM |
7443 | } |
7444 | ||
3b421ab3 AM |
7445 | /* Find (or create) an entry in the tocsave hash table. */ |
7446 | ||
7447 | static struct tocsave_entry * | |
7448 | tocsave_find (struct ppc_link_hash_table *htab, | |
7449 | enum insert_option insert, | |
7450 | Elf_Internal_Sym **local_syms, | |
7451 | const Elf_Internal_Rela *irela, | |
7452 | bfd *ibfd) | |
7453 | { | |
7454 | unsigned long r_indx; | |
7455 | struct elf_link_hash_entry *h; | |
7456 | Elf_Internal_Sym *sym; | |
7457 | struct tocsave_entry ent, *p; | |
7458 | hashval_t hash; | |
7459 | struct tocsave_entry **slot; | |
7460 | ||
7461 | r_indx = ELF64_R_SYM (irela->r_info); | |
7462 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7463 | return NULL; | |
7464 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7465 | { | |
7466 | (*_bfd_error_handler) | |
7467 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
7468 | return NULL; | |
7469 | } | |
7470 | ||
7471 | if (h != NULL) | |
7472 | ent.offset = h->root.u.def.value; | |
7473 | else | |
7474 | ent.offset = sym->st_value; | |
7475 | ent.offset += irela->r_addend; | |
7476 | ||
7477 | hash = tocsave_htab_hash (&ent); | |
7478 | slot = ((struct tocsave_entry **) | |
7479 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7480 | if (slot == NULL) | |
7481 | return NULL; | |
7482 | ||
7483 | if (*slot == NULL) | |
7484 | { | |
7485 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7486 | if (p == NULL) | |
7487 | return NULL; | |
7488 | *p = ent; | |
7489 | *slot = p; | |
7490 | } | |
7491 | return *slot; | |
7492 | } | |
7493 | ||
754021d0 | 7494 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7495 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7496 | |
7497 | static bfd_boolean | |
7498 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7499 | { | |
7500 | struct ppc_link_hash_entry *eh; | |
7501 | asection *sym_sec; | |
74f0fb50 | 7502 | struct _opd_sec_data *opd; |
754021d0 AM |
7503 | |
7504 | if (h->root.type == bfd_link_hash_indirect) | |
7505 | return TRUE; | |
7506 | ||
754021d0 AM |
7507 | if (h->root.type != bfd_link_hash_defined |
7508 | && h->root.type != bfd_link_hash_defweak) | |
7509 | return TRUE; | |
7510 | ||
7511 | eh = (struct ppc_link_hash_entry *) h; | |
7512 | if (eh->adjust_done) | |
7513 | return TRUE; | |
7514 | ||
7515 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7516 | opd = get_opd_info (sym_sec); |
7517 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7518 | { |
51aecdc5 | 7519 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7520 | if (adjust == -1) |
7521 | { | |
7522 | /* This entry has been deleted. */ | |
b3fac117 | 7523 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7524 | if (dsec == NULL) |
7525 | { | |
7526 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7527 | if (discarded_section (dsec)) |
81688140 | 7528 | { |
b3fac117 | 7529 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7530 | break; |
7531 | } | |
7532 | } | |
4025353c | 7533 | eh->elf.root.u.def.value = 0; |
81688140 | 7534 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7535 | } |
7536 | else | |
7537 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7538 | eh->adjust_done = 1; |
7539 | } | |
7540 | return TRUE; | |
7541 | } | |
7542 | ||
8c1d1bb8 | 7543 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7544 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7545 | have already been determined. */ |
7546 | ||
7547 | static bfd_boolean | |
7548 | dec_dynrel_count (bfd_vma r_info, | |
7549 | asection *sec, | |
7550 | struct bfd_link_info *info, | |
7551 | Elf_Internal_Sym **local_syms, | |
7552 | struct elf_link_hash_entry *h, | |
19e08130 | 7553 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7554 | { |
7555 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7556 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7557 | |
7558 | /* Can this reloc be dynamic? This switch, and later tests here | |
7559 | should be kept in sync with the code in check_relocs. */ | |
7560 | r_type = ELF64_R_TYPE (r_info); | |
7561 | switch (r_type) | |
7562 | { | |
7563 | default: | |
7564 | return TRUE; | |
7565 | ||
7566 | case R_PPC64_TPREL16: | |
7567 | case R_PPC64_TPREL16_LO: | |
7568 | case R_PPC64_TPREL16_HI: | |
7569 | case R_PPC64_TPREL16_HA: | |
7570 | case R_PPC64_TPREL16_DS: | |
7571 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7572 | case R_PPC64_TPREL16_HIGH: |
7573 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7574 | case R_PPC64_TPREL16_HIGHER: |
7575 | case R_PPC64_TPREL16_HIGHERA: | |
7576 | case R_PPC64_TPREL16_HIGHEST: | |
7577 | case R_PPC64_TPREL16_HIGHESTA: | |
0e1862bb | 7578 | if (!bfd_link_pic (info)) |
8c1d1bb8 AM |
7579 | return TRUE; |
7580 | ||
7581 | case R_PPC64_TPREL64: | |
7582 | case R_PPC64_DTPMOD64: | |
7583 | case R_PPC64_DTPREL64: | |
7584 | case R_PPC64_ADDR64: | |
7585 | case R_PPC64_REL30: | |
7586 | case R_PPC64_REL32: | |
7587 | case R_PPC64_REL64: | |
7588 | case R_PPC64_ADDR14: | |
7589 | case R_PPC64_ADDR14_BRNTAKEN: | |
7590 | case R_PPC64_ADDR14_BRTAKEN: | |
7591 | case R_PPC64_ADDR16: | |
7592 | case R_PPC64_ADDR16_DS: | |
7593 | case R_PPC64_ADDR16_HA: | |
7594 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7595 | case R_PPC64_ADDR16_HIGH: |
7596 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7597 | case R_PPC64_ADDR16_HIGHER: |
7598 | case R_PPC64_ADDR16_HIGHERA: | |
7599 | case R_PPC64_ADDR16_HIGHEST: | |
7600 | case R_PPC64_ADDR16_HIGHESTA: | |
7601 | case R_PPC64_ADDR16_LO: | |
7602 | case R_PPC64_ADDR16_LO_DS: | |
7603 | case R_PPC64_ADDR24: | |
7604 | case R_PPC64_ADDR32: | |
7605 | case R_PPC64_UADDR16: | |
7606 | case R_PPC64_UADDR32: | |
7607 | case R_PPC64_UADDR64: | |
7608 | case R_PPC64_TOC: | |
7609 | break; | |
7610 | } | |
7611 | ||
7612 | if (local_syms != NULL) | |
7613 | { | |
7614 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7615 | bfd *ibfd = sec->owner; |
7616 | ||
7617 | r_symndx = ELF64_R_SYM (r_info); | |
7618 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7619 | return FALSE; | |
7620 | } | |
7621 | ||
0e1862bb | 7622 | if ((bfd_link_pic (info) |
1d483afe | 7623 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7624 | || (h != NULL |
198f1157 | 7625 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7626 | || h->root.type == bfd_link_hash_defweak |
7627 | || !h->def_regular)))) | |
7628 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7629 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7630 | && h != NULL |
7631 | && (h->root.type == bfd_link_hash_defweak | |
7632 | || !h->def_regular))) | |
7633 | ; | |
7634 | else | |
7635 | return TRUE; | |
7636 | ||
7637 | if (h != NULL) | |
6edfbbad | 7638 | { |
19e08130 AM |
7639 | struct elf_dyn_relocs *p; |
7640 | struct elf_dyn_relocs **pp; | |
7641 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7642 | ||
7643 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7644 | with local syms for a given section. Also, symbol flags are | |
7645 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7646 | report a dynreloc miscount. */ | |
7647 | if (*pp == NULL && info->gc_sections) | |
7648 | return TRUE; | |
7649 | ||
7650 | while ((p = *pp) != NULL) | |
60124e18 | 7651 | { |
19e08130 AM |
7652 | if (p->sec == sec) |
7653 | { | |
7654 | if (!must_be_dyn_reloc (info, r_type)) | |
7655 | p->pc_count -= 1; | |
7656 | p->count -= 1; | |
7657 | if (p->count == 0) | |
7658 | *pp = p->next; | |
7659 | return TRUE; | |
7660 | } | |
7661 | pp = &p->next; | |
60124e18 | 7662 | } |
6edfbbad | 7663 | } |
19e08130 AM |
7664 | else |
7665 | { | |
7666 | struct ppc_dyn_relocs *p; | |
7667 | struct ppc_dyn_relocs **pp; | |
7668 | void *vpp; | |
7669 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7670 | |
19e08130 AM |
7671 | if (local_syms == NULL) |
7672 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7673 | if (sym_sec == NULL) | |
7674 | sym_sec = sec; | |
c57da1a7 | 7675 | |
19e08130 AM |
7676 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7677 | pp = (struct ppc_dyn_relocs **) vpp; | |
7678 | ||
7679 | if (*pp == NULL && info->gc_sections) | |
7680 | return TRUE; | |
7681 | ||
7682 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7683 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7684 | { |
19e08130 AM |
7685 | if (p->sec == sec && p->ifunc == is_ifunc) |
7686 | { | |
7687 | p->count -= 1; | |
7688 | if (p->count == 0) | |
7689 | *pp = p->next; | |
7690 | return TRUE; | |
7691 | } | |
7692 | pp = &p->next; | |
8c1d1bb8 | 7693 | } |
8c1d1bb8 AM |
7694 | } |
7695 | ||
8de848d8 | 7696 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7697 | sec->owner, sec); |
8c1d1bb8 AM |
7698 | bfd_set_error (bfd_error_bad_value); |
7699 | return FALSE; | |
7700 | } | |
7701 | ||
754021d0 AM |
7702 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7703 | only remove those associated with functions in discarded link-once | |
7704 | sections, or weakly defined functions that have been overridden. It | |
7705 | would be possible to remove many more entries for statically linked | |
7706 | applications. */ | |
7707 | ||
b34976b6 | 7708 | bfd_boolean |
e7d1c40c | 7709 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7710 | { |
7711 | bfd *ibfd; | |
754021d0 | 7712 | bfd_boolean some_edited = FALSE; |
3f764659 | 7713 | asection *need_pad = NULL; |
e7d1c40c AM |
7714 | struct ppc_link_hash_table *htab; |
7715 | ||
7716 | htab = ppc_hash_table (info); | |
7717 | if (htab == NULL) | |
7718 | return FALSE; | |
1e2f5b6e | 7719 | |
c72f2fb2 | 7720 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7721 | { |
7722 | asection *sec; | |
7723 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7724 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7725 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7726 | struct _opd_sec_data *opd; |
51aecdc5 | 7727 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7728 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7729 | |
854b41e7 AM |
7730 | if (!is_ppc64_elf (ibfd)) |
7731 | continue; | |
7732 | ||
1e2f5b6e | 7733 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7734 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7735 | continue; |
7736 | ||
dbaa2011 | 7737 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7738 | continue; |
7739 | ||
1e2f5b6e AM |
7740 | if (sec->output_section == bfd_abs_section_ptr) |
7741 | continue; | |
7742 | ||
7743 | /* Look through the section relocs. */ | |
7744 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7745 | continue; | |
7746 | ||
6cdc0ccc | 7747 | local_syms = NULL; |
0ffa91dd | 7748 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7749 | |
7750 | /* Read the relocations. */ | |
4ce794b7 | 7751 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7752 | info->keep_memory); |
1e2f5b6e | 7753 | if (relstart == NULL) |
b34976b6 | 7754 | return FALSE; |
1e2f5b6e AM |
7755 | |
7756 | /* First run through the relocs to check they are sane, and to | |
7757 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7758 | need_edit = FALSE; |
51aecdc5 | 7759 | broken = FALSE; |
3f764659 | 7760 | need_pad = sec; |
1e2f5b6e | 7761 | relend = relstart + sec->reloc_count; |
50bc7936 | 7762 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7763 | { |
04c9666a | 7764 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7765 | unsigned long r_symndx; |
7766 | asection *sym_sec; | |
7767 | struct elf_link_hash_entry *h; | |
7768 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7769 | bfd_vma offset; |
1e2f5b6e | 7770 | |
51aecdc5 | 7771 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7772 | only interested in the reloc pointing to a function entry |
7773 | point. */ | |
51aecdc5 AM |
7774 | offset = rel->r_offset; |
7775 | if (rel + 1 == relend | |
7776 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7777 | { |
7778 | /* If someone messes with .opd alignment then after a | |
7779 | "ld -r" we might have padding in the middle of .opd. | |
7780 | Also, there's nothing to prevent someone putting | |
7781 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7782 | optimization for them! */ |
3f764659 | 7783 | broken_opd: |
1e2f5b6e | 7784 | (*_bfd_error_handler) |
d003868e | 7785 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7786 | broken = TRUE; |
1e2f5b6e AM |
7787 | break; |
7788 | } | |
7789 | ||
50bc7936 AM |
7790 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7791 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7792 | { | |
7793 | (*_bfd_error_handler) | |
d003868e AM |
7794 | (_("%B: unexpected reloc type %u in .opd section"), |
7795 | ibfd, r_type); | |
51aecdc5 | 7796 | broken = TRUE; |
50bc7936 AM |
7797 | break; |
7798 | } | |
7799 | ||
1e2f5b6e | 7800 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7801 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7802 | r_symndx, ibfd)) | |
50bc7936 | 7803 | goto error_ret; |
1e2f5b6e AM |
7804 | |
7805 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7806 | { | |
411e1bfb AM |
7807 | const char *sym_name; |
7808 | if (h != NULL) | |
7809 | sym_name = h->root.root.string; | |
7810 | else | |
26c61ae5 L |
7811 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7812 | sym_sec); | |
411e1bfb | 7813 | |
1e2f5b6e | 7814 | (*_bfd_error_handler) |
d003868e AM |
7815 | (_("%B: undefined sym `%s' in .opd section"), |
7816 | ibfd, sym_name); | |
51aecdc5 | 7817 | broken = TRUE; |
1e2f5b6e AM |
7818 | break; |
7819 | } | |
7820 | ||
51020317 AM |
7821 | /* opd entries are always for functions defined in the |
7822 | current input bfd. If the symbol isn't defined in the | |
7823 | input bfd, then we won't be using the function in this | |
7824 | bfd; It must be defined in a linkonce section in another | |
7825 | bfd, or is weak. It's also possible that we are | |
7826 | discarding the function due to a linker script /DISCARD/, | |
7827 | which we test for via the output_section. */ | |
7828 | if (sym_sec->owner != ibfd | |
7829 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7830 | need_edit = TRUE; |
1e2f5b6e | 7831 | |
50bc7936 | 7832 | rel += 2; |
51aecdc5 AM |
7833 | if (rel + 1 == relend |
7834 | || (rel + 2 < relend | |
7835 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7836 | ++rel; | |
7837 | ||
7838 | if (rel == relend) | |
3f764659 JJ |
7839 | { |
7840 | if (sec->size == offset + 24) | |
7841 | { | |
7842 | need_pad = NULL; | |
7843 | break; | |
7844 | } | |
51aecdc5 | 7845 | if (sec->size == offset + 16) |
3f764659 JJ |
7846 | { |
7847 | cnt_16b++; | |
7848 | break; | |
7849 | } | |
7850 | goto broken_opd; | |
7851 | } | |
3f764659 JJ |
7852 | else if (rel + 1 < relend |
7853 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7854 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7855 | { | |
51aecdc5 AM |
7856 | if (rel[0].r_offset == offset + 16) |
7857 | cnt_16b++; | |
7858 | else if (rel[0].r_offset != offset + 24) | |
7859 | goto broken_opd; | |
3f764659 JJ |
7860 | } |
7861 | else | |
7862 | goto broken_opd; | |
1e2f5b6e AM |
7863 | } |
7864 | ||
e7d1c40c | 7865 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7866 | |
51aecdc5 | 7867 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7868 | { |
7869 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7870 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7871 | bfd_byte *rptr, *wptr; |
983bddc8 | 7872 | bfd_byte *new_contents; |
74f0fb50 AM |
7873 | bfd_size_type amt; |
7874 | ||
983bddc8 | 7875 | new_contents = NULL; |
51aecdc5 | 7876 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7877 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7878 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7879 | if (opd->adjust == NULL) |
7880 | return FALSE; | |
7881 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7882 | |
7883 | /* This seems a waste of time as input .opd sections are all | |
7884 | zeros as generated by gcc, but I suppose there's no reason | |
7885 | this will always be so. We might start putting something in | |
7886 | the third word of .opd entries. */ | |
7887 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7888 | { | |
eea6121a AM |
7889 | bfd_byte *loc; |
7890 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7891 | { |
eea6121a AM |
7892 | if (loc != NULL) |
7893 | free (loc); | |
50bc7936 | 7894 | error_ret: |
6cdc0ccc AM |
7895 | if (local_syms != NULL |
7896 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7897 | free (local_syms); | |
6cdc0ccc AM |
7898 | if (elf_section_data (sec)->relocs != relstart) |
7899 | free (relstart); | |
b34976b6 | 7900 | return FALSE; |
6cdc0ccc | 7901 | } |
1e2f5b6e AM |
7902 | sec->contents = loc; |
7903 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7904 | } | |
7905 | ||
7906 | elf_section_data (sec)->relocs = relstart; | |
7907 | ||
3f764659 | 7908 | new_contents = sec->contents; |
3f764659 JJ |
7909 | if (add_aux_fields) |
7910 | { | |
7911 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7912 | if (new_contents == NULL) | |
7913 | return FALSE; | |
51aecdc5 | 7914 | need_pad = NULL; |
3f764659 | 7915 | } |
b4f4e59f AM |
7916 | wptr = new_contents; |
7917 | rptr = sec->contents; | |
1e2f5b6e | 7918 | write_rel = relstart; |
51aecdc5 | 7919 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7920 | { |
50bc7936 AM |
7921 | unsigned long r_symndx; |
7922 | asection *sym_sec; | |
7923 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7924 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7925 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7926 | long opd_ent_size; |
7927 | Elf_Internal_Rela *next_rel; | |
7928 | bfd_boolean skip; | |
50bc7936 AM |
7929 | |
7930 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7931 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7932 | r_symndx, ibfd)) |
50bc7936 AM |
7933 | goto error_ret; |
7934 | ||
51aecdc5 AM |
7935 | next_rel = rel + 2; |
7936 | if (next_rel + 1 == relend | |
7937 | || (next_rel + 2 < relend | |
7938 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7939 | ++next_rel; | |
7940 | ||
7941 | /* See if the .opd entry is full 24 byte or | |
7942 | 16 byte (with fd_aux entry overlapped with next | |
7943 | fd_func). */ | |
7944 | opd_ent_size = 24; | |
7945 | if (next_rel == relend) | |
1e2f5b6e | 7946 | { |
51aecdc5 | 7947 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7948 | opd_ent_size = 16; |
51aecdc5 AM |
7949 | } |
7950 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7951 | opd_ent_size = 16; | |
3f764659 | 7952 | |
51aecdc5 AM |
7953 | if (h != NULL |
7954 | && h->root.root.string[0] == '.') | |
7955 | { | |
7956 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); | |
7957 | if (fdh != NULL | |
7958 | && fdh->elf.root.type != bfd_link_hash_defined | |
7959 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7960 | fdh = NULL; | |
7961 | } | |
1e2f5b6e | 7962 | |
51aecdc5 AM |
7963 | skip = (sym_sec->owner != ibfd |
7964 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7965 | if (skip) | |
7966 | { | |
7967 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7968 | { |
51aecdc5 AM |
7969 | /* Arrange for the function descriptor sym |
7970 | to be dropped. */ | |
7971 | fdh->elf.root.u.def.value = 0; | |
7972 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7973 | } |
51aecdc5 | 7974 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7975 | |
0e1862bb | 7976 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7977 | rel = next_rel; |
7978 | else | |
7979 | while (1) | |
7980 | { | |
7981 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7982 | NULL, h, sym)) | |
7983 | goto error_ret; | |
754021d0 | 7984 | |
51aecdc5 AM |
7985 | if (++rel == next_rel) |
7986 | break; | |
1e2f5b6e | 7987 | |
51aecdc5 AM |
7988 | r_symndx = ELF64_R_SYM (rel->r_info); |
7989 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7990 | r_symndx, ibfd)) | |
7991 | goto error_ret; | |
7992 | } | |
50bc7936 AM |
7993 | } |
7994 | else | |
1e2f5b6e | 7995 | { |
51aecdc5 AM |
7996 | /* We'll be keeping this opd entry. */ |
7997 | long adjust; | |
7998 | ||
7999 | if (fdh != NULL) | |
8000 | { | |
8001 | /* Redefine the function descriptor symbol to | |
8002 | this location in the opd section. It is | |
8003 | necessary to update the value here rather | |
8004 | than using an array of adjustments as we do | |
8005 | for local symbols, because various places | |
8006 | in the generic ELF code use the value | |
8007 | stored in u.def.value. */ | |
8008 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8009 | fdh->adjust_done = 1; | |
8010 | } | |
8011 | ||
8012 | /* Local syms are a bit tricky. We could | |
8013 | tweak them as they can be cached, but | |
8014 | we'd need to look through the local syms | |
8015 | for the function descriptor sym which we | |
8016 | don't have at the moment. So keep an | |
8017 | array of adjustments. */ | |
8018 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8019 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8020 | ||
8021 | if (wptr != rptr) | |
8022 | memcpy (wptr, rptr, opd_ent_size); | |
8023 | wptr += opd_ent_size; | |
8024 | if (add_aux_fields && opd_ent_size == 16) | |
8025 | { | |
8026 | memset (wptr, '\0', 8); | |
8027 | wptr += 8; | |
8028 | } | |
8029 | ||
50bc7936 | 8030 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8031 | new opd entries. */ |
8032 | for ( ; rel != next_rel; ++rel) | |
8033 | { | |
8034 | rel->r_offset += adjust; | |
8035 | if (write_rel != rel) | |
8036 | memcpy (write_rel, rel, sizeof (*rel)); | |
8037 | ++write_rel; | |
8038 | } | |
1e2f5b6e | 8039 | } |
51aecdc5 AM |
8040 | |
8041 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8042 | } |
8043 | ||
3f764659 | 8044 | sec->size = wptr - new_contents; |
1e2f5b6e | 8045 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8046 | if (add_aux_fields) |
8047 | { | |
8048 | free (sec->contents); | |
8049 | sec->contents = new_contents; | |
8050 | } | |
8051 | ||
05bf9422 | 8052 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8053 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8054 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8055 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8056 | some_edited = TRUE; |
1e2f5b6e | 8057 | } |
6cdc0ccc | 8058 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8059 | free (relstart); |
6cdc0ccc | 8060 | |
411e1bfb AM |
8061 | if (local_syms != NULL |
8062 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8063 | { | |
8064 | if (!info->keep_memory) | |
8065 | free (local_syms); | |
8066 | else | |
8067 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8068 | } | |
8069 | } | |
8070 | ||
754021d0 AM |
8071 | if (some_edited) |
8072 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8073 | ||
3f764659 JJ |
8074 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8075 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8076 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8077 | { |
8078 | bfd_byte *p; | |
8079 | ||
8080 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8081 | { | |
8082 | BFD_ASSERT (need_pad->size > 0); | |
8083 | ||
8084 | p = bfd_malloc (need_pad->size + 8); | |
8085 | if (p == NULL) | |
8086 | return FALSE; | |
699733f6 | 8087 | |
3f764659 JJ |
8088 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
8089 | p, 0, need_pad->size)) | |
8090 | return FALSE; | |
8091 | ||
8092 | need_pad->contents = p; | |
8093 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8094 | } | |
8095 | else | |
8096 | { | |
8097 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8098 | if (p == NULL) | |
8099 | return FALSE; | |
8100 | ||
8101 | need_pad->contents = p; | |
8102 | } | |
8103 | ||
8104 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8105 | need_pad->size += 8; | |
8106 | } | |
8107 | ||
411e1bfb AM |
8108 | return TRUE; |
8109 | } | |
8110 | ||
e1918d23 | 8111 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8112 | |
e1918d23 | 8113 | asection * |
e7d1c40c | 8114 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8115 | { |
411e1bfb AM |
8116 | struct ppc_link_hash_table *htab; |
8117 | ||
411e1bfb | 8118 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8119 | if (htab == NULL) |
8120 | return NULL; | |
8121 | ||
ee67d69a AM |
8122 | if (abiversion (info->output_bfd) == 1) |
8123 | htab->opd_abi = 1; | |
8124 | ||
e7d1c40c | 8125 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8126 | htab->do_multi_toc = 0; |
8127 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8128 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8129 | |
3a71aa26 AM |
8130 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8131 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8132 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8133 | /* Move dynamic linking info to the function descriptor sym. */ |
8134 | if (htab->tls_get_addr != NULL) | |
8135 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8136 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8137 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8138 | FALSE, FALSE, TRUE)); | |
e7d1c40c | 8139 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
8140 | { |
8141 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8142 | ||
8143 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8144 | FALSE, FALSE, TRUE); | |
8145 | if (opt != NULL) | |
8146 | func_desc_adjust (opt, info); | |
8147 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8148 | FALSE, FALSE, TRUE); | |
8149 | if (opt_fd != NULL | |
8150 | && (opt_fd->root.type == bfd_link_hash_defined | |
8151 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8152 | { | |
8153 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8154 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8155 | be calling __tls_get_addr via a plt call stub, then | |
8156 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8157 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8158 | if (htab->elf.dynamic_sections_created | |
8159 | && tga_fd != NULL | |
8160 | && (tga_fd->type == STT_FUNC | |
8161 | || tga_fd->needs_plt) | |
8162 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
8163 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
8164 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
8165 | { | |
8166 | struct plt_entry *ent; | |
8167 | ||
8168 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8169 | if (ent->plt.refcount > 0) | |
8170 | break; | |
8171 | if (ent != NULL) | |
8172 | { | |
8173 | tga_fd->root.type = bfd_link_hash_indirect; | |
8174 | tga_fd->root.u.i.link = &opt_fd->root; | |
8175 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
8176 | if (opt_fd->dynindx != -1) | |
8177 | { | |
8178 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8179 | opt_fd->dynindx = -1; | |
8180 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8181 | opt_fd->dynstr_index); | |
8182 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8183 | return NULL; |
a7f2871e AM |
8184 | } |
8185 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8186 | tga = &htab->tls_get_addr->elf; | |
8187 | if (opt != NULL && tga != NULL) | |
8188 | { | |
8189 | tga->root.type = bfd_link_hash_indirect; | |
8190 | tga->root.u.i.link = &opt->root; | |
8191 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
8192 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
8193 | tga->forced_local); | |
8194 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8195 | } | |
8196 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8197 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8198 | if (htab->tls_get_addr != NULL) | |
8199 | { | |
8200 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8201 | htab->tls_get_addr->is_func = 1; | |
8202 | } | |
8203 | } | |
8204 | } | |
8205 | } | |
8206 | else | |
e7d1c40c | 8207 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 8208 | } |
33c0ec9d | 8209 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8210 | } |
8387904d | 8211 | |
3a71aa26 AM |
8212 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8213 | HASH1 or HASH2. */ | |
8387904d | 8214 | |
3a71aa26 AM |
8215 | static bfd_boolean |
8216 | branch_reloc_hash_match (const bfd *ibfd, | |
8217 | const Elf_Internal_Rela *rel, | |
8218 | const struct ppc_link_hash_entry *hash1, | |
8219 | const struct ppc_link_hash_entry *hash2) | |
8220 | { | |
8221 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8222 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8223 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8224 | ||
e054468f | 8225 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8226 | { |
3a71aa26 AM |
8227 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8228 | struct elf_link_hash_entry *h; | |
8387904d | 8229 | |
3a71aa26 | 8230 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8231 | h = elf_follow_link (h); |
3a71aa26 AM |
8232 | if (h == &hash1->elf || h == &hash2->elf) |
8233 | return TRUE; | |
a48ebf4d | 8234 | } |
3a71aa26 | 8235 | return FALSE; |
951fd09b | 8236 | } |
411e1bfb | 8237 | |
951fd09b AM |
8238 | /* Run through all the TLS relocs looking for optimization |
8239 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8240 | a preliminary section layout so that we know the TLS segment | |
8241 | offsets. We can't optimize earlier because some optimizations need | |
8242 | to know the tp offset, and we need to optimize before allocating | |
8243 | dynamic relocations. */ | |
8244 | ||
8245 | bfd_boolean | |
33c0ec9d | 8246 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8247 | { |
8248 | bfd *ibfd; | |
8249 | asection *sec; | |
8250 | struct ppc_link_hash_table *htab; | |
663a1470 | 8251 | unsigned char *toc_ref; |
102890f0 | 8252 | int pass; |
951fd09b | 8253 | |
3cbc1e5e | 8254 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8255 | return TRUE; |
8256 | ||
951fd09b | 8257 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8258 | if (htab == NULL) |
8259 | return FALSE; | |
8260 | ||
663a1470 AM |
8261 | /* Make two passes over the relocs. On the first pass, mark toc |
8262 | entries involved with tls relocs, and check that tls relocs | |
8263 | involved in setting up a tls_get_addr call are indeed followed by | |
8264 | such a call. If they are not, we can't do any tls optimization. | |
8265 | On the second pass twiddle tls_mask flags to notify | |
8266 | relocate_section that optimization can be done, and adjust got | |
8267 | and plt refcounts. */ | |
8268 | toc_ref = NULL; | |
8269 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8270 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8271 | { |
8272 | Elf_Internal_Sym *locsyms = NULL; | |
8273 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8274 | ||
102890f0 AM |
8275 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8276 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8277 | { | |
8278 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8279 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8280 | |
102890f0 AM |
8281 | /* Read the relocations. */ |
8282 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8283 | info->keep_memory); | |
8284 | if (relstart == NULL) | |
2915c55b JK |
8285 | { |
8286 | free (toc_ref); | |
8287 | return FALSE; | |
8288 | } | |
411e1bfb | 8289 | |
102890f0 AM |
8290 | relend = relstart + sec->reloc_count; |
8291 | for (rel = relstart; rel < relend; rel++) | |
8292 | { | |
8293 | enum elf_ppc64_reloc_type r_type; | |
8294 | unsigned long r_symndx; | |
8295 | struct elf_link_hash_entry *h; | |
8296 | Elf_Internal_Sym *sym; | |
8297 | asection *sym_sec; | |
f961d9dd AM |
8298 | unsigned char *tls_mask; |
8299 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8300 | bfd_vma value; |
8301 | bfd_boolean ok_tprel, is_local; | |
8302 | long toc_ref_index = 0; | |
8303 | int expecting_tls_get_addr = 0; | |
663a1470 | 8304 | bfd_boolean ret = FALSE; |
411e1bfb | 8305 | |
102890f0 AM |
8306 | r_symndx = ELF64_R_SYM (rel->r_info); |
8307 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8308 | r_symndx, ibfd)) | |
8309 | { | |
8310 | err_free_rel: | |
8311 | if (elf_section_data (sec)->relocs != relstart) | |
8312 | free (relstart); | |
8313 | if (toc_ref != NULL) | |
8314 | free (toc_ref); | |
8315 | if (locsyms != NULL | |
0ffa91dd | 8316 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8317 | != (unsigned char *) locsyms)) |
8318 | free (locsyms); | |
663a1470 | 8319 | return ret; |
102890f0 | 8320 | } |
411e1bfb | 8321 | |
102890f0 AM |
8322 | if (h != NULL) |
8323 | { | |
766bc656 AM |
8324 | if (h->root.type == bfd_link_hash_defined |
8325 | || h->root.type == bfd_link_hash_defweak) | |
8326 | value = h->root.u.def.value; | |
8327 | else if (h->root.type == bfd_link_hash_undefweak) | |
8328 | value = 0; | |
8329 | else | |
663a1470 AM |
8330 | { |
8331 | found_tls_get_addr_arg = 0; | |
8332 | continue; | |
8333 | } | |
102890f0 AM |
8334 | } |
8335 | else | |
8336 | /* Symbols referenced by TLS relocs must be of type | |
8337 | STT_TLS. So no need for .opd local sym adjust. */ | |
8338 | value = sym->st_value; | |
8339 | ||
8340 | ok_tprel = FALSE; | |
8341 | is_local = FALSE; | |
8342 | if (h == NULL | |
8343 | || !h->def_dynamic) | |
8344 | { | |
8345 | is_local = TRUE; | |
766bc656 AM |
8346 | if (h != NULL |
8347 | && h->root.type == bfd_link_hash_undefweak) | |
8348 | ok_tprel = TRUE; | |
8349 | else | |
8350 | { | |
8351 | value += sym_sec->output_offset; | |
8352 | value += sym_sec->output_section->vma; | |
8353 | value -= htab->elf.tls_sec->vma; | |
8354 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8355 | < (bfd_vma) 1 << 32); | |
8356 | } | |
102890f0 | 8357 | } |
951fd09b | 8358 | |
102890f0 | 8359 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8360 | /* If this section has old-style __tls_get_addr calls |
8361 | without marker relocs, then check that each | |
8362 | __tls_get_addr call reloc is preceded by a reloc | |
8363 | that conceivably belongs to the __tls_get_addr arg | |
8364 | setup insn. If we don't find matching arg setup | |
8365 | relocs, don't do any tls optimization. */ | |
8366 | if (pass == 0 | |
8367 | && sec->has_tls_get_addr_call | |
8368 | && h != NULL | |
8369 | && (h == &htab->tls_get_addr->elf | |
8370 | || h == &htab->tls_get_addr_fd->elf) | |
8371 | && !found_tls_get_addr_arg | |
8372 | && is_branch_reloc (r_type)) | |
8373 | { | |
25f53a85 | 8374 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8375 | "TLS optimization disabled\n"), |
8376 | ibfd, sec, rel->r_offset); | |
8377 | ret = TRUE; | |
8378 | goto err_free_rel; | |
8379 | } | |
8380 | ||
8381 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8382 | switch (r_type) |
8383 | { | |
8384 | case R_PPC64_GOT_TLSLD16: | |
8385 | case R_PPC64_GOT_TLSLD16_LO: | |
8386 | expecting_tls_get_addr = 1; | |
663a1470 | 8387 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8388 | /* Fall thru */ |
8389 | ||
8390 | case R_PPC64_GOT_TLSLD16_HI: | |
8391 | case R_PPC64_GOT_TLSLD16_HA: | |
8392 | /* These relocs should never be against a symbol | |
8393 | defined in a shared lib. Leave them alone if | |
8394 | that turns out to be the case. */ | |
8395 | if (!is_local) | |
8396 | continue; | |
411e1bfb | 8397 | |
102890f0 | 8398 | /* LD -> LE */ |
411e1bfb | 8399 | tls_set = 0; |
102890f0 AM |
8400 | tls_clear = TLS_LD; |
8401 | tls_type = TLS_TLS | TLS_LD; | |
8402 | break; | |
411e1bfb | 8403 | |
102890f0 AM |
8404 | case R_PPC64_GOT_TLSGD16: |
8405 | case R_PPC64_GOT_TLSGD16_LO: | |
8406 | expecting_tls_get_addr = 1; | |
663a1470 | 8407 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8408 | /* Fall thru */ |
8409 | ||
8410 | case R_PPC64_GOT_TLSGD16_HI: | |
8411 | case R_PPC64_GOT_TLSGD16_HA: | |
8412 | if (ok_tprel) | |
8413 | /* GD -> LE */ | |
411e1bfb | 8414 | tls_set = 0; |
102890f0 AM |
8415 | else |
8416 | /* GD -> IE */ | |
8417 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8418 | tls_clear = TLS_GD; | |
8419 | tls_type = TLS_TLS | TLS_GD; | |
8420 | break; | |
8421 | ||
8422 | case R_PPC64_GOT_TPREL16_DS: | |
8423 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8424 | case R_PPC64_GOT_TPREL16_HI: | |
8425 | case R_PPC64_GOT_TPREL16_HA: | |
8426 | if (ok_tprel) | |
8427 | { | |
8428 | /* IE -> LE */ | |
8429 | tls_set = 0; | |
8430 | tls_clear = TLS_TPREL; | |
8431 | tls_type = TLS_TLS | TLS_TPREL; | |
8432 | break; | |
8433 | } | |
411e1bfb AM |
8434 | continue; |
8435 | ||
727fc41e AM |
8436 | case R_PPC64_TLSGD: |
8437 | case R_PPC64_TLSLD: | |
663a1470 AM |
8438 | found_tls_get_addr_arg = 1; |
8439 | /* Fall thru */ | |
8440 | ||
8441 | case R_PPC64_TLS: | |
8442 | case R_PPC64_TOC16: | |
8443 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8444 | if (sym_sec == NULL || sym_sec != toc) |
8445 | continue; | |
8446 | ||
8447 | /* Mark this toc entry as referenced by a TLS | |
8448 | code sequence. We can do that now in the | |
8449 | case of R_PPC64_TLS, and after checking for | |
8450 | tls_get_addr for the TOC16 relocs. */ | |
8451 | if (toc_ref == NULL) | |
663a1470 AM |
8452 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8453 | if (toc_ref == NULL) | |
8454 | goto err_free_rel; | |
8455 | ||
102890f0 AM |
8456 | if (h != NULL) |
8457 | value = h->root.u.def.value; | |
8458 | else | |
8459 | value = sym->st_value; | |
8460 | value += rel->r_addend; | |
73242275 AM |
8461 | if (value % 8 != 0) |
8462 | continue; | |
8463 | BFD_ASSERT (value < toc->size | |
8464 | && toc->output_offset % 8 == 0); | |
663a1470 | 8465 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8466 | if (r_type == R_PPC64_TLS |
8467 | || r_type == R_PPC64_TLSGD | |
8468 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8469 | { |
8470 | toc_ref[toc_ref_index] = 1; | |
8471 | continue; | |
8472 | } | |
8473 | ||
8474 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8475 | continue; | |
8476 | ||
8477 | tls_set = 0; | |
8478 | tls_clear = 0; | |
8479 | expecting_tls_get_addr = 2; | |
8480 | break; | |
8481 | ||
8482 | case R_PPC64_TPREL64: | |
8483 | if (pass == 0 | |
8484 | || sec != toc | |
8485 | || toc_ref == NULL | |
663a1470 | 8486 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8487 | continue; |
8488 | if (ok_tprel) | |
8489 | { | |
8490 | /* IE -> LE */ | |
8491 | tls_set = TLS_EXPLICIT; | |
8492 | tls_clear = TLS_TPREL; | |
8493 | break; | |
8494 | } | |
8495 | continue; | |
8496 | ||
8497 | case R_PPC64_DTPMOD64: | |
8498 | if (pass == 0 | |
8499 | || sec != toc | |
8500 | || toc_ref == NULL | |
663a1470 | 8501 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8502 | continue; |
8503 | if (rel + 1 < relend | |
8504 | && (rel[1].r_info | |
8505 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8506 | && rel[1].r_offset == rel->r_offset + 8) | |
8507 | { | |
8508 | if (ok_tprel) | |
8509 | /* GD -> LE */ | |
8510 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8511 | else | |
8512 | /* GD -> IE */ | |
8513 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8514 | tls_clear = TLS_GD; | |
8515 | } | |
8516 | else | |
8517 | { | |
8518 | if (!is_local) | |
8519 | continue; | |
8520 | ||
8521 | /* LD -> LE */ | |
8522 | tls_set = TLS_EXPLICIT; | |
8523 | tls_clear = TLS_LD; | |
8524 | } | |
8525 | break; | |
8526 | ||
8527 | default: | |
8528 | continue; | |
8529 | } | |
8530 | ||
8531 | if (pass == 0) | |
8532 | { | |
727fc41e AM |
8533 | if (!expecting_tls_get_addr |
8534 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8535 | continue; |
8536 | ||
3a71aa26 AM |
8537 | if (rel + 1 < relend |
8538 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8539 | htab->tls_get_addr, | |
8540 | htab->tls_get_addr_fd)) | |
102890f0 | 8541 | { |
3a71aa26 | 8542 | if (expecting_tls_get_addr == 2) |
102890f0 | 8543 | { |
3a71aa26 | 8544 | /* Check for toc tls entries. */ |
f961d9dd | 8545 | unsigned char *toc_tls; |
3a71aa26 AM |
8546 | int retval; |
8547 | ||
8548 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8549 | &locsyms, | |
8550 | rel, ibfd); | |
8551 | if (retval == 0) | |
8552 | goto err_free_rel; | |
663a1470 AM |
8553 | if (toc_tls != NULL) |
8554 | { | |
8555 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8556 | found_tls_get_addr_arg = 1; | |
8557 | if (retval > 1) | |
8558 | toc_ref[toc_ref_index] = 1; | |
8559 | } | |
102890f0 | 8560 | } |
3a71aa26 | 8561 | continue; |
102890f0 AM |
8562 | } |
8563 | ||
8564 | if (expecting_tls_get_addr != 1) | |
8565 | continue; | |
8566 | ||
8567 | /* Uh oh, we didn't find the expected call. We | |
8568 | could just mark this symbol to exclude it | |
8569 | from tls optimization but it's safer to skip | |
663a1470 | 8570 | the entire optimization. */ |
25f53a85 | 8571 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8572 | "TLS optimization disabled\n"), |
8573 | ibfd, sec, rel->r_offset); | |
8574 | ret = TRUE; | |
8575 | goto err_free_rel; | |
102890f0 AM |
8576 | } |
8577 | ||
85f7a9cb | 8578 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8579 | { |
8580 | struct plt_entry *ent; | |
8581 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8582 | ent != NULL; | |
8583 | ent = ent->next) | |
8584 | if (ent->addend == 0) | |
411e1bfb | 8585 | { |
102890f0 | 8586 | if (ent->plt.refcount > 0) |
30038c59 | 8587 | { |
102890f0 AM |
8588 | ent->plt.refcount -= 1; |
8589 | expecting_tls_get_addr = 0; | |
30038c59 | 8590 | } |
102890f0 | 8591 | break; |
411e1bfb | 8592 | } |
102890f0 | 8593 | } |
411e1bfb | 8594 | |
85f7a9cb | 8595 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8596 | { |
8597 | struct plt_entry *ent; | |
8598 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8599 | ent != NULL; | |
8600 | ent = ent->next) | |
8601 | if (ent->addend == 0) | |
411e1bfb | 8602 | { |
102890f0 AM |
8603 | if (ent->plt.refcount > 0) |
8604 | ent->plt.refcount -= 1; | |
8605 | break; | |
411e1bfb | 8606 | } |
102890f0 | 8607 | } |
411e1bfb | 8608 | |
102890f0 | 8609 | if (tls_clear == 0) |
30038c59 AM |
8610 | continue; |
8611 | ||
102890f0 AM |
8612 | if ((tls_set & TLS_EXPLICIT) == 0) |
8613 | { | |
8614 | struct got_entry *ent; | |
411e1bfb | 8615 | |
102890f0 AM |
8616 | /* Adjust got entry for this reloc. */ |
8617 | if (h != NULL) | |
8618 | ent = h->got.glist; | |
8619 | else | |
8620 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8621 | |
102890f0 AM |
8622 | for (; ent != NULL; ent = ent->next) |
8623 | if (ent->addend == rel->r_addend | |
8624 | && ent->owner == ibfd | |
8625 | && ent->tls_type == tls_type) | |
8626 | break; | |
8627 | if (ent == NULL) | |
8628 | abort (); | |
411e1bfb | 8629 | |
102890f0 AM |
8630 | if (tls_set == 0) |
8631 | { | |
8632 | /* We managed to get rid of a got entry. */ | |
8633 | if (ent->got.refcount > 0) | |
8634 | ent->got.refcount -= 1; | |
8635 | } | |
8636 | } | |
8637 | else | |
8638 | { | |
8639 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8640 | we'll lose one or two dyn relocs. */ | |
8641 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8642 | NULL, h, sym)) |
102890f0 | 8643 | return FALSE; |
411e1bfb | 8644 | |
102890f0 AM |
8645 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8646 | { | |
8647 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8648 | NULL, h, sym)) |
102890f0 AM |
8649 | return FALSE; |
8650 | } | |
8651 | } | |
411e1bfb | 8652 | |
102890f0 AM |
8653 | *tls_mask |= tls_set; |
8654 | *tls_mask &= ~tls_clear; | |
8655 | } | |
8c1d1bb8 | 8656 | |
102890f0 AM |
8657 | if (elf_section_data (sec)->relocs != relstart) |
8658 | free (relstart); | |
8659 | } | |
411e1bfb | 8660 | |
663a1470 AM |
8661 | if (locsyms != NULL |
8662 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8663 | { | |
8664 | if (!info->keep_memory) | |
8665 | free (locsyms); | |
8666 | else | |
8667 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8668 | } | |
8669 | } | |
411e1bfb | 8670 | |
663a1470 AM |
8671 | if (toc_ref != NULL) |
8672 | free (toc_ref); | |
b34976b6 | 8673 | return TRUE; |
1e2f5b6e | 8674 | } |
b34976b6 | 8675 | |
c5614fa4 AM |
8676 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8677 | the values of any global symbols in a toc section that has been | |
8678 | edited. Globals in toc sections should be a rarity, so this function | |
8679 | sets a flag if any are found in toc sections other than the one just | |
8680 | edited, so that futher hash table traversals can be avoided. */ | |
8681 | ||
8682 | struct adjust_toc_info | |
8683 | { | |
8684 | asection *toc; | |
8685 | unsigned long *skip; | |
8686 | bfd_boolean global_toc_syms; | |
8687 | }; | |
8688 | ||
ba761f19 AM |
8689 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8690 | ||
c5614fa4 AM |
8691 | static bfd_boolean |
8692 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8693 | { | |
8694 | struct ppc_link_hash_entry *eh; | |
8695 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8696 | unsigned long i; |
c5614fa4 | 8697 | |
c5614fa4 AM |
8698 | if (h->root.type != bfd_link_hash_defined |
8699 | && h->root.type != bfd_link_hash_defweak) | |
8700 | return TRUE; | |
8701 | ||
8702 | eh = (struct ppc_link_hash_entry *) h; | |
8703 | if (eh->adjust_done) | |
8704 | return TRUE; | |
8705 | ||
8706 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8707 | { | |
854b41e7 AM |
8708 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8709 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8710 | else |
854b41e7 AM |
8711 | i = eh->elf.root.u.def.value >> 3; |
8712 | ||
ba761f19 | 8713 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8714 | { |
8715 | (*_bfd_error_handler) | |
854b41e7 AM |
8716 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8717 | do | |
8718 | ++i; | |
ba761f19 | 8719 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8720 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8721 | } |
854b41e7 AM |
8722 | |
8723 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8724 | eh->adjust_done = 1; |
8725 | } | |
8726 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8727 | toc_inf->global_toc_syms = TRUE; | |
8728 | ||
8729 | return TRUE; | |
8730 | } | |
8731 | ||
560c8763 AM |
8732 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8733 | ||
8734 | static bfd_boolean | |
8735 | ok_lo_toc_insn (unsigned int insn) | |
8736 | { | |
8737 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8738 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8739 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8740 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8741 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8742 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8743 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8744 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8745 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8746 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8747 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8748 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8749 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8750 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8751 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8752 | && (insn & 3) != 1) | |
8753 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8754 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8755 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8756 | } | |
8757 | ||
c5614fa4 AM |
8758 | /* Examine all relocs referencing .toc sections in order to remove |
8759 | unused .toc entries. */ | |
8760 | ||
8761 | bfd_boolean | |
33c0ec9d | 8762 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8763 | { |
8764 | bfd *ibfd; | |
8765 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8766 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8767 | |
67f0cbdb | 8768 | htab->do_toc_opt = 1; |
c5614fa4 | 8769 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8770 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8771 | { |
8772 | asection *toc, *sec; | |
8773 | Elf_Internal_Shdr *symtab_hdr; | |
8774 | Elf_Internal_Sym *local_syms; | |
425b145b | 8775 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8776 | unsigned long *skip, *drop; |
8777 | unsigned char *used; | |
8778 | unsigned char *keep, last, some_unused; | |
8779 | ||
854b41e7 AM |
8780 | if (!is_ppc64_elf (ibfd)) |
8781 | continue; | |
8782 | ||
c5614fa4 AM |
8783 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8784 | if (toc == NULL | |
92b7a70f | 8785 | || toc->size == 0 |
dbaa2011 AM |
8786 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8787 | || discarded_section (toc)) | |
c5614fa4 AM |
8788 | continue; |
8789 | ||
425b145b | 8790 | toc_relocs = NULL; |
c5614fa4 | 8791 | local_syms = NULL; |
0ffa91dd | 8792 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8793 | |
8794 | /* Look at sections dropped from the final link. */ | |
8795 | skip = NULL; | |
8796 | relstart = NULL; | |
8797 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8798 | { | |
8799 | if (sec->reloc_count == 0 | |
dbaa2011 | 8800 | || !discarded_section (sec) |
c5614fa4 AM |
8801 | || get_opd_info (sec) |
8802 | || (sec->flags & SEC_ALLOC) == 0 | |
8803 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8804 | continue; | |
8805 | ||
8806 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8807 | if (relstart == NULL) | |
8808 | goto error_ret; | |
8809 | ||
8810 | /* Run through the relocs to see which toc entries might be | |
8811 | unused. */ | |
8812 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8813 | { | |
8814 | enum elf_ppc64_reloc_type r_type; | |
8815 | unsigned long r_symndx; | |
8816 | asection *sym_sec; | |
8817 | struct elf_link_hash_entry *h; | |
8818 | Elf_Internal_Sym *sym; | |
8819 | bfd_vma val; | |
8820 | ||
8821 | r_type = ELF64_R_TYPE (rel->r_info); | |
8822 | switch (r_type) | |
8823 | { | |
8824 | default: | |
8825 | continue; | |
8826 | ||
8827 | case R_PPC64_TOC16: | |
8828 | case R_PPC64_TOC16_LO: | |
8829 | case R_PPC64_TOC16_HI: | |
8830 | case R_PPC64_TOC16_HA: | |
8831 | case R_PPC64_TOC16_DS: | |
8832 | case R_PPC64_TOC16_LO_DS: | |
8833 | break; | |
8834 | } | |
8835 | ||
8836 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8837 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8838 | r_symndx, ibfd)) | |
8839 | goto error_ret; | |
8840 | ||
8841 | if (sym_sec != toc) | |
8842 | continue; | |
8843 | ||
8844 | if (h != NULL) | |
8845 | val = h->root.u.def.value; | |
8846 | else | |
8847 | val = sym->st_value; | |
8848 | val += rel->r_addend; | |
8849 | ||
8850 | if (val >= toc->size) | |
8851 | continue; | |
8852 | ||
8853 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8854 | If not, don't mark as unused. */ | |
8855 | if (val & 7) | |
8856 | continue; | |
8857 | ||
8858 | if (skip == NULL) | |
8859 | { | |
854b41e7 | 8860 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8861 | if (skip == NULL) |
8862 | goto error_ret; | |
8863 | } | |
8864 | ||
ba761f19 | 8865 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8866 | } |
8867 | ||
8868 | if (elf_section_data (sec)->relocs != relstart) | |
8869 | free (relstart); | |
8870 | } | |
8871 | ||
ba761f19 AM |
8872 | /* For largetoc loads of address constants, we can convert |
8873 | . addis rx,2,addr@got@ha | |
8874 | . ld ry,addr@got@l(rx) | |
8875 | to | |
8876 | . addis rx,2,addr@toc@ha | |
8877 | . addi ry,rx,addr@toc@l | |
8878 | when addr is within 2G of the toc pointer. This then means | |
8879 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8880 | |
ba761f19 AM |
8881 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8882 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8883 | && toc->reloc_count != 0) | |
8884 | { | |
8885 | /* Read toc relocs. */ | |
425b145b AM |
8886 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8887 | info->keep_memory); | |
8888 | if (toc_relocs == NULL) | |
ba761f19 AM |
8889 | goto error_ret; |
8890 | ||
425b145b | 8891 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8892 | { |
8893 | enum elf_ppc64_reloc_type r_type; | |
8894 | unsigned long r_symndx; | |
8895 | asection *sym_sec; | |
8896 | struct elf_link_hash_entry *h; | |
8897 | Elf_Internal_Sym *sym; | |
8898 | bfd_vma val, addr; | |
8899 | ||
8900 | r_type = ELF64_R_TYPE (rel->r_info); | |
8901 | if (r_type != R_PPC64_ADDR64) | |
8902 | continue; | |
8903 | ||
8904 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8905 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8906 | r_symndx, ibfd)) | |
8907 | goto error_ret; | |
8908 | ||
425b145b | 8909 | if (sym_sec == NULL |
dbaa2011 | 8910 | || discarded_section (sym_sec)) |
425b145b AM |
8911 | continue; |
8912 | ||
afe397ea | 8913 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8914 | continue; |
8915 | ||
8916 | if (h != NULL) | |
bddc25c9 AM |
8917 | { |
8918 | if (h->type == STT_GNU_IFUNC) | |
8919 | continue; | |
8920 | val = h->root.u.def.value; | |
8921 | } | |
ba761f19 | 8922 | else |
bddc25c9 AM |
8923 | { |
8924 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8925 | continue; | |
8926 | val = sym->st_value; | |
8927 | } | |
ba761f19 AM |
8928 | val += rel->r_addend; |
8929 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8930 | ||
8931 | /* We don't yet know the exact toc pointer value, but we | |
8932 | know it will be somewhere in the toc section. Don't | |
8933 | optimize if the difference from any possible toc | |
8934 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8935 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8936 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8937 | continue; | |
8938 | ||
8939 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8940 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8941 | continue; | |
8942 | ||
8943 | if (skip == NULL) | |
8944 | { | |
8945 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8946 | if (skip == NULL) | |
8947 | goto error_ret; | |
8948 | } | |
8949 | ||
8950 | skip[rel->r_offset >> 3] | |
425b145b | 8951 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8952 | } |
ba761f19 AM |
8953 | } |
8954 | ||
c5614fa4 AM |
8955 | if (skip == NULL) |
8956 | continue; | |
8957 | ||
8958 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8959 | if (used == NULL) | |
8960 | { | |
8961 | error_ret: | |
8962 | if (local_syms != NULL | |
8963 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8964 | free (local_syms); | |
8965 | if (sec != NULL | |
8966 | && relstart != NULL | |
8967 | && elf_section_data (sec)->relocs != relstart) | |
8968 | free (relstart); | |
425b145b AM |
8969 | if (toc_relocs != NULL |
8970 | && elf_section_data (toc)->relocs != toc_relocs) | |
8971 | free (toc_relocs); | |
c5614fa4 AM |
8972 | if (skip != NULL) |
8973 | free (skip); | |
8974 | return FALSE; | |
8975 | } | |
8976 | ||
30038c59 AM |
8977 | /* Now check all kept sections that might reference the toc. |
8978 | Check the toc itself last. */ | |
8979 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8980 | : ibfd->sections); | |
c5614fa4 | 8981 | sec != NULL; |
c5614fa4 | 8982 | sec = (sec == toc ? NULL |
c5614fa4 | 8983 | : sec->next == NULL ? toc |
30038c59 | 8984 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8985 | : sec->next)) |
8986 | { | |
8987 | int repeat; | |
8988 | ||
8989 | if (sec->reloc_count == 0 | |
dbaa2011 | 8990 | || discarded_section (sec) |
c5614fa4 AM |
8991 | || get_opd_info (sec) |
8992 | || (sec->flags & SEC_ALLOC) == 0 | |
8993 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8994 | continue; | |
8995 | ||
854b41e7 AM |
8996 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8997 | info->keep_memory); | |
c5614fa4 | 8998 | if (relstart == NULL) |
2915c55b JK |
8999 | { |
9000 | free (used); | |
9001 | goto error_ret; | |
9002 | } | |
c5614fa4 AM |
9003 | |
9004 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9005 | do |
d4f1ee75 AM |
9006 | { |
9007 | repeat = 0; | |
9008 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9009 | { | |
9010 | enum elf_ppc64_reloc_type r_type; | |
9011 | unsigned long r_symndx; | |
9012 | asection *sym_sec; | |
9013 | struct elf_link_hash_entry *h; | |
9014 | Elf_Internal_Sym *sym; | |
9015 | bfd_vma val; | |
9016 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9017 | |
d4f1ee75 AM |
9018 | r_type = ELF64_R_TYPE (rel->r_info); |
9019 | switch (r_type) | |
9020 | { | |
9021 | default: | |
9022 | insn_check = no_check; | |
9023 | break; | |
98528052 | 9024 | |
d4f1ee75 AM |
9025 | case R_PPC64_GOT_TLSLD16_HA: |
9026 | case R_PPC64_GOT_TLSGD16_HA: | |
9027 | case R_PPC64_GOT_TPREL16_HA: | |
9028 | case R_PPC64_GOT_DTPREL16_HA: | |
9029 | case R_PPC64_GOT16_HA: | |
9030 | case R_PPC64_TOC16_HA: | |
9031 | insn_check = check_ha; | |
9032 | break; | |
98528052 | 9033 | |
d4f1ee75 AM |
9034 | case R_PPC64_GOT_TLSLD16_LO: |
9035 | case R_PPC64_GOT_TLSGD16_LO: | |
9036 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9037 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9038 | case R_PPC64_GOT16_LO: | |
9039 | case R_PPC64_GOT16_LO_DS: | |
9040 | case R_PPC64_TOC16_LO: | |
9041 | case R_PPC64_TOC16_LO_DS: | |
9042 | insn_check = check_lo; | |
9043 | break; | |
9044 | } | |
560c8763 | 9045 | |
d4f1ee75 AM |
9046 | if (insn_check != no_check) |
9047 | { | |
9048 | bfd_vma off = rel->r_offset & ~3; | |
9049 | unsigned char buf[4]; | |
9050 | unsigned int insn; | |
c5614fa4 | 9051 | |
d4f1ee75 AM |
9052 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9053 | { | |
9054 | free (used); | |
9055 | goto error_ret; | |
9056 | } | |
9057 | insn = bfd_get_32 (ibfd, buf); | |
9058 | if (insn_check == check_lo | |
9059 | ? !ok_lo_toc_insn (insn) | |
9060 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
9061 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9062 | { | |
9063 | char str[12]; | |
9064 | ||
9065 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9066 | sprintf (str, "%#08x", insn); | |
9067 | info->callbacks->einfo | |
9068 | (_("%P: %H: toc optimization is not supported for" | |
9069 | " %s instruction.\n"), | |
9070 | ibfd, sec, rel->r_offset & ~3, str); | |
9071 | } | |
9072 | } | |
c5614fa4 | 9073 | |
d4f1ee75 AM |
9074 | switch (r_type) |
9075 | { | |
9076 | case R_PPC64_TOC16: | |
9077 | case R_PPC64_TOC16_LO: | |
9078 | case R_PPC64_TOC16_HI: | |
9079 | case R_PPC64_TOC16_HA: | |
9080 | case R_PPC64_TOC16_DS: | |
9081 | case R_PPC64_TOC16_LO_DS: | |
9082 | /* In case we're taking addresses of toc entries. */ | |
9083 | case R_PPC64_ADDR64: | |
9084 | break; | |
c5614fa4 | 9085 | |
d4f1ee75 AM |
9086 | default: |
9087 | continue; | |
9088 | } | |
c5614fa4 | 9089 | |
d4f1ee75 AM |
9090 | r_symndx = ELF64_R_SYM (rel->r_info); |
9091 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9092 | r_symndx, ibfd)) | |
9093 | { | |
9094 | free (used); | |
9095 | goto error_ret; | |
9096 | } | |
c5614fa4 | 9097 | |
d4f1ee75 AM |
9098 | if (sym_sec != toc) |
9099 | continue; | |
c5614fa4 | 9100 | |
d4f1ee75 AM |
9101 | if (h != NULL) |
9102 | val = h->root.u.def.value; | |
9103 | else | |
9104 | val = sym->st_value; | |
9105 | val += rel->r_addend; | |
ba761f19 | 9106 | |
d4f1ee75 AM |
9107 | if (val >= toc->size) |
9108 | continue; | |
ba761f19 | 9109 | |
d4f1ee75 AM |
9110 | if ((skip[val >> 3] & can_optimize) != 0) |
9111 | { | |
9112 | bfd_vma off; | |
9113 | unsigned char opc; | |
9114 | ||
9115 | switch (r_type) | |
9116 | { | |
9117 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9118 | break; |
ba761f19 | 9119 | |
d4f1ee75 AM |
9120 | case R_PPC64_TOC16_LO_DS: |
9121 | off = rel->r_offset; | |
9122 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9123 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9124 | off, 1)) | |
9125 | { | |
9126 | free (used); | |
9127 | goto error_ret; | |
9128 | } | |
9129 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9130 | break; | |
9131 | /* Fall thru */ | |
ba761f19 | 9132 | |
d4f1ee75 AM |
9133 | default: |
9134 | /* Wrong sort of reloc, or not a ld. We may | |
9135 | as well clear ref_from_discarded too. */ | |
9136 | skip[val >> 3] = 0; | |
9137 | } | |
9138 | } | |
9139 | ||
9140 | if (sec != toc) | |
9141 | used[val >> 3] = 1; | |
9142 | /* For the toc section, we only mark as used if this | |
9143 | entry itself isn't unused. */ | |
9144 | else if ((used[rel->r_offset >> 3] | |
9145 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9146 | && !used[val >> 3]) | |
9147 | { | |
9148 | /* Do all the relocs again, to catch reference | |
9149 | chains. */ | |
9150 | repeat = 1; | |
9151 | used[val >> 3] = 1; | |
9152 | } | |
9153 | } | |
9154 | } | |
c5614fa4 | 9155 | while (repeat); |
854b41e7 AM |
9156 | |
9157 | if (elf_section_data (sec)->relocs != relstart) | |
9158 | free (relstart); | |
c5614fa4 AM |
9159 | } |
9160 | ||
9161 | /* Merge the used and skip arrays. Assume that TOC | |
9162 | doublewords not appearing as either used or unused belong | |
9163 | to to an entry more than one doubleword in size. */ | |
9164 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
9165 | drop < skip + (toc->size + 7) / 8; | |
9166 | ++drop, ++keep) | |
9167 | { | |
9168 | if (*keep) | |
9169 | { | |
ba761f19 AM |
9170 | *drop &= ~ref_from_discarded; |
9171 | if ((*drop & can_optimize) != 0) | |
9172 | some_unused = 1; | |
c5614fa4 AM |
9173 | last = 0; |
9174 | } | |
b140b010 | 9175 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9176 | { |
9177 | some_unused = 1; | |
ba761f19 | 9178 | last = ref_from_discarded; |
c5614fa4 AM |
9179 | } |
9180 | else | |
9181 | *drop = last; | |
9182 | } | |
9183 | ||
9184 | free (used); | |
9185 | ||
9186 | if (some_unused) | |
9187 | { | |
9188 | bfd_byte *contents, *src; | |
9189 | unsigned long off; | |
d62b3684 | 9190 | Elf_Internal_Sym *sym; |
ba761f19 | 9191 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9192 | |
9193 | /* Shuffle the toc contents, and at the same time convert the | |
9194 | skip array from booleans into offsets. */ | |
9195 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9196 | goto error_ret; | |
9197 | ||
9198 | elf_section_data (toc)->this_hdr.contents = contents; | |
9199 | ||
9200 | for (src = contents, off = 0, drop = skip; | |
9201 | src < contents + toc->size; | |
9202 | src += 8, ++drop) | |
9203 | { | |
ba761f19 AM |
9204 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9205 | off += 8; | |
c5614fa4 AM |
9206 | else if (off != 0) |
9207 | { | |
9208 | *drop = off; | |
9209 | memcpy (src - off, src, 8); | |
9210 | } | |
9211 | } | |
854b41e7 | 9212 | *drop = off; |
c5614fa4 AM |
9213 | toc->rawsize = toc->size; |
9214 | toc->size = src - contents - off; | |
9215 | ||
ba761f19 AM |
9216 | /* Adjust addends for relocs against the toc section sym, |
9217 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9218 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9219 | { | |
9220 | if (sec->reloc_count == 0 | |
dbaa2011 | 9221 | || discarded_section (sec)) |
c5614fa4 AM |
9222 | continue; |
9223 | ||
9224 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9225 | info->keep_memory); |
c5614fa4 AM |
9226 | if (relstart == NULL) |
9227 | goto error_ret; | |
9228 | ||
9229 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9230 | { | |
9231 | enum elf_ppc64_reloc_type r_type; | |
9232 | unsigned long r_symndx; | |
9233 | asection *sym_sec; | |
9234 | struct elf_link_hash_entry *h; | |
854b41e7 | 9235 | bfd_vma val; |
c5614fa4 AM |
9236 | |
9237 | r_type = ELF64_R_TYPE (rel->r_info); | |
9238 | switch (r_type) | |
9239 | { | |
9240 | default: | |
9241 | continue; | |
9242 | ||
9243 | case R_PPC64_TOC16: | |
9244 | case R_PPC64_TOC16_LO: | |
9245 | case R_PPC64_TOC16_HI: | |
9246 | case R_PPC64_TOC16_HA: | |
9247 | case R_PPC64_TOC16_DS: | |
9248 | case R_PPC64_TOC16_LO_DS: | |
9249 | case R_PPC64_ADDR64: | |
9250 | break; | |
9251 | } | |
9252 | ||
9253 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9254 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9255 | r_symndx, ibfd)) | |
9256 | goto error_ret; | |
9257 | ||
ba761f19 | 9258 | if (sym_sec != toc) |
c5614fa4 AM |
9259 | continue; |
9260 | ||
ba761f19 AM |
9261 | if (h != NULL) |
9262 | val = h->root.u.def.value; | |
9263 | else | |
9264 | { | |
9265 | val = sym->st_value; | |
9266 | if (val != 0) | |
9267 | local_toc_syms = TRUE; | |
9268 | } | |
9269 | ||
9270 | val += rel->r_addend; | |
854b41e7 AM |
9271 | |
9272 | if (val > toc->rawsize) | |
9273 | val = toc->rawsize; | |
ba761f19 AM |
9274 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9275 | continue; | |
9276 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9277 | { | |
9278 | Elf_Internal_Rela *tocrel | |
425b145b | 9279 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9280 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9281 | ||
9282 | switch (r_type) | |
9283 | { | |
9284 | case R_PPC64_TOC16_HA: | |
9285 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9286 | break; | |
9287 | ||
9288 | case R_PPC64_TOC16_LO_DS: | |
9289 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9290 | break; | |
9291 | ||
9292 | default: | |
28942f62 AM |
9293 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9294 | ppc_howto_init (); | |
b140b010 | 9295 | info->callbacks->einfo |
bc30df16 | 9296 | (_("%P: %H: %s references " |
b140b010 AM |
9297 | "optimized away TOC entry\n"), |
9298 | ibfd, sec, rel->r_offset, | |
9299 | ppc64_elf_howto_table[r_type]->name); | |
9300 | bfd_set_error (bfd_error_bad_value); | |
9301 | goto error_ret; | |
ba761f19 AM |
9302 | } |
9303 | rel->r_addend = tocrel->r_addend; | |
9304 | elf_section_data (sec)->relocs = relstart; | |
9305 | continue; | |
9306 | } | |
9307 | ||
9308 | if (h != NULL || sym->st_value != 0) | |
9309 | continue; | |
854b41e7 AM |
9310 | |
9311 | rel->r_addend -= skip[val >> 3]; | |
9312 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9313 | } |
854b41e7 AM |
9314 | |
9315 | if (elf_section_data (sec)->relocs != relstart) | |
9316 | free (relstart); | |
c5614fa4 AM |
9317 | } |
9318 | ||
9319 | /* We shouldn't have local or global symbols defined in the TOC, | |
9320 | but handle them anyway. */ | |
df22d223 AM |
9321 | if (local_syms != NULL) |
9322 | for (sym = local_syms; | |
9323 | sym < local_syms + symtab_hdr->sh_info; | |
9324 | ++sym) | |
9325 | if (sym->st_value != 0 | |
9326 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9327 | { | |
9328 | unsigned long i; | |
854b41e7 | 9329 | |
df22d223 AM |
9330 | if (sym->st_value > toc->rawsize) |
9331 | i = toc->rawsize >> 3; | |
9332 | else | |
9333 | i = sym->st_value >> 3; | |
854b41e7 | 9334 | |
df22d223 AM |
9335 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9336 | { | |
9337 | if (local_toc_syms) | |
9338 | (*_bfd_error_handler) | |
9339 | (_("%s defined on removed toc entry"), | |
9340 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9341 | do | |
9342 | ++i; | |
9343 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9344 | sym->st_value = (bfd_vma) i << 3; | |
9345 | } | |
d62b3684 | 9346 | |
df22d223 AM |
9347 | sym->st_value -= skip[i]; |
9348 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9349 | } | |
c5614fa4 | 9350 | |
854b41e7 | 9351 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9352 | if (toc_inf.global_toc_syms) |
9353 | { | |
9354 | toc_inf.toc = toc; | |
9355 | toc_inf.skip = skip; | |
9356 | toc_inf.global_toc_syms = FALSE; | |
9357 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9358 | &toc_inf); | |
9359 | } | |
854b41e7 AM |
9360 | |
9361 | if (toc->reloc_count != 0) | |
9362 | { | |
d4730f92 | 9363 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9364 | Elf_Internal_Rela *wrel; |
9365 | bfd_size_type sz; | |
9366 | ||
854b41e7 | 9367 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9368 | if (toc_relocs == NULL) |
9369 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9370 | info->keep_memory); | |
9371 | if (toc_relocs == NULL) | |
9372 | goto error_ret; | |
9373 | ||
425b145b AM |
9374 | wrel = toc_relocs; |
9375 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9376 | if ((skip[rel->r_offset >> 3] |
9377 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9378 | { |
9379 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9380 | wrel->r_info = rel->r_info; | |
9381 | wrel->r_addend = rel->r_addend; | |
9382 | ++wrel; | |
9383 | } | |
9384 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9385 | &local_syms, NULL, NULL)) | |
9386 | goto error_ret; | |
9387 | ||
425b145b AM |
9388 | elf_section_data (toc)->relocs = toc_relocs; |
9389 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9390 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9391 | sz = rel_hdr->sh_entsize; | |
9392 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9393 | } |
c5614fa4 | 9394 | } |
28be611c AM |
9395 | else if (toc_relocs != NULL |
9396 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9397 | free (toc_relocs); |
c5614fa4 AM |
9398 | |
9399 | if (local_syms != NULL | |
9400 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9401 | { | |
9402 | if (!info->keep_memory) | |
9403 | free (local_syms); | |
9404 | else | |
9405 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9406 | } | |
9407 | free (skip); | |
9408 | } | |
9409 | ||
9410 | return TRUE; | |
9411 | } | |
9412 | ||
1bbe0902 AM |
9413 | /* Return true iff input section I references the TOC using |
9414 | instructions limited to +/-32k offsets. */ | |
9415 | ||
9416 | bfd_boolean | |
9417 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9418 | { | |
9419 | return (is_ppc64_elf (i->owner) | |
9420 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9421 | } | |
9422 | ||
927be08e AM |
9423 | /* Allocate space for one GOT entry. */ |
9424 | ||
9425 | static void | |
9426 | allocate_got (struct elf_link_hash_entry *h, | |
9427 | struct bfd_link_info *info, | |
9428 | struct got_entry *gent) | |
9429 | { | |
9430 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9431 | bfd_boolean dyn; | |
9432 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
9433 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9434 | ? 16 : 8); | |
9435 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9436 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9437 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9438 | ||
9439 | gent->got.offset = got->size; | |
9440 | got->size += entsize; | |
9441 | ||
9442 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 9443 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9444 | { |
33e44f2e | 9445 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9446 | htab->got_reli_size += rentsize; |
927be08e | 9447 | } |
0e1862bb | 9448 | else if ((bfd_link_pic (info) |
19e08130 AM |
9449 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
9450 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
9451 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 9452 | { |
19e08130 | 9453 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9454 | relgot->size += rentsize; |
927be08e AM |
9455 | } |
9456 | } | |
9457 | ||
7865406b AM |
9458 | /* This function merges got entries in the same toc group. */ |
9459 | ||
9460 | static void | |
9461 | merge_got_entries (struct got_entry **pent) | |
9462 | { | |
9463 | struct got_entry *ent, *ent2; | |
9464 | ||
9465 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9466 | if (!ent->is_indirect) | |
9467 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9468 | if (!ent2->is_indirect | |
9469 | && ent2->addend == ent->addend | |
9470 | && ent2->tls_type == ent->tls_type | |
9471 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9472 | { | |
9473 | ent2->is_indirect = TRUE; | |
9474 | ent2->got.ent = ent; | |
9475 | } | |
9476 | } | |
9477 | ||
65f38f15 AM |
9478 | /* Allocate space in .plt, .got and associated reloc sections for |
9479 | dynamic relocs. */ | |
5bd4f169 | 9480 | |
b34976b6 | 9481 | static bfd_boolean |
4ce794b7 | 9482 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9483 | { |
65f38f15 AM |
9484 | struct bfd_link_info *info; |
9485 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9486 | asection *s; |
65f38f15 | 9487 | struct ppc_link_hash_entry *eh; |
6061a67d | 9488 | struct elf_dyn_relocs *p; |
0b8bcf0d | 9489 | struct got_entry **pgent, *gent; |
5bd4f169 | 9490 | |
e92d460e | 9491 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9492 | return TRUE; |
5bd4f169 | 9493 | |
65f38f15 AM |
9494 | info = (struct bfd_link_info *) inf; |
9495 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9496 | if (htab == NULL) |
9497 | return FALSE; | |
5bd4f169 | 9498 | |
e054468f AM |
9499 | if ((htab->elf.dynamic_sections_created |
9500 | && h->dynindx != -1 | |
0e1862bb | 9501 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
e054468f | 9502 | || h->type == STT_GNU_IFUNC) |
5bd4f169 | 9503 | { |
411e1bfb AM |
9504 | struct plt_entry *pent; |
9505 | bfd_boolean doneone = FALSE; | |
9506 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9507 | if (pent->plt.refcount > 0) | |
9508 | { | |
25f23106 AM |
9509 | if (!htab->elf.dynamic_sections_created |
9510 | || h->dynindx == -1) | |
e054468f | 9511 | { |
33e44f2e | 9512 | s = htab->elf.iplt; |
e054468f | 9513 | pent->plt.offset = s->size; |
b9e5796b | 9514 | s->size += PLT_ENTRY_SIZE (htab); |
33e44f2e | 9515 | s = htab->elf.irelplt; |
e054468f AM |
9516 | } |
9517 | else | |
9518 | { | |
9519 | /* If this is the first .plt entry, make room for the special | |
9520 | first entry. */ | |
33e44f2e | 9521 | s = htab->elf.splt; |
e054468f | 9522 | if (s->size == 0) |
b9e5796b | 9523 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
e054468f AM |
9524 | |
9525 | pent->plt.offset = s->size; | |
9526 | ||
9527 | /* Make room for this entry. */ | |
b9e5796b | 9528 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f AM |
9529 | |
9530 | /* Make room for the .glink code. */ | |
9531 | s = htab->glink; | |
9532 | if (s->size == 0) | |
9533 | s->size += GLINK_CALL_STUB_SIZE; | |
b9e5796b AM |
9534 | if (htab->opd_abi) |
9535 | { | |
9536 | /* We need bigger stubs past index 32767. */ | |
9537 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9538 | s->size += 4; | |
9539 | s->size += 2*4; | |
9540 | } | |
9541 | else | |
e054468f | 9542 | s->size += 4; |
e054468f AM |
9543 | |
9544 | /* We also need to make an entry in the .rela.plt section. */ | |
33e44f2e | 9545 | s = htab->elf.srelplt; |
e054468f | 9546 | } |
eea6121a | 9547 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
9548 | doneone = TRUE; |
9549 | } | |
9550 | else | |
9551 | pent->plt.offset = (bfd_vma) -1; | |
9552 | if (!doneone) | |
65f38f15 | 9553 | { |
411e1bfb | 9554 | h->plt.plist = NULL; |
f5385ebf | 9555 | h->needs_plt = 0; |
65f38f15 AM |
9556 | } |
9557 | } | |
9558 | else | |
9559 | { | |
411e1bfb | 9560 | h->plt.plist = NULL; |
f5385ebf | 9561 | h->needs_plt = 0; |
65f38f15 AM |
9562 | } |
9563 | ||
951fd09b AM |
9564 | eh = (struct ppc_link_hash_entry *) h; |
9565 | /* Run through the TLS GD got entries first if we're changing them | |
9566 | to TPREL. */ | |
e7b938ca | 9567 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9568 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9569 | if (gent->got.refcount > 0 | |
9570 | && (gent->tls_type & TLS_GD) != 0) | |
9571 | { | |
9572 | /* This was a GD entry that has been converted to TPREL. If | |
9573 | there happens to be a TPREL entry we can use that one. */ | |
9574 | struct got_entry *ent; | |
9575 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9576 | if (ent->got.refcount > 0 | |
9577 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9578 | && ent->addend == gent->addend |
9579 | && ent->owner == gent->owner) | |
951fd09b AM |
9580 | { |
9581 | gent->got.refcount = 0; | |
9582 | break; | |
9583 | } | |
9584 | ||
9585 | /* If not, then we'll be using our own TPREL entry. */ | |
9586 | if (gent->got.refcount != 0) | |
9587 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9588 | } | |
9589 | ||
7865406b AM |
9590 | /* Remove any list entry that won't generate a word in the GOT before |
9591 | we call merge_got_entries. Otherwise we risk merging to empty | |
9592 | entries. */ | |
0b8bcf0d AM |
9593 | pgent = &h->got.glist; |
9594 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9595 | if (gent->got.refcount > 0) |
7865406b AM |
9596 | { |
9597 | if ((gent->tls_type & TLS_LD) != 0 | |
9598 | && !h->def_dynamic) | |
9599 | { | |
9600 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9601 | *pgent = gent->next; | |
9602 | } | |
9603 | else | |
9604 | pgent = &gent->next; | |
9605 | } | |
9606 | else | |
9607 | *pgent = gent->next; | |
9608 | ||
9609 | if (!htab->do_multi_toc) | |
9610 | merge_got_entries (&h->got.glist); | |
9611 | ||
9612 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9613 | if (!gent->is_indirect) | |
411e1bfb AM |
9614 | { |
9615 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9616 | Undefined weak syms won't yet be marked as dynamic, |
9617 | nor will all TLS symbols. */ | |
411e1bfb | 9618 | if (h->dynindx == -1 |
b099ab9f | 9619 | && !h->forced_local |
25f23106 | 9620 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9621 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9622 | { |
c152c796 | 9623 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9624 | return FALSE; |
9625 | } | |
65f38f15 | 9626 | |
0c8d6e5c | 9627 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9628 | abort (); |
0ffa91dd | 9629 | |
927be08e | 9630 | allocate_got (h, info, gent); |
411e1bfb | 9631 | } |
65f38f15 | 9632 | |
b099ab9f | 9633 | if (eh->dyn_relocs == NULL |
25f23106 | 9634 | || (!htab->elf.dynamic_sections_created |
14b5f73f | 9635 | && h->type != STT_GNU_IFUNC)) |
b34976b6 | 9636 | return TRUE; |
65f38f15 AM |
9637 | |
9638 | /* In the shared -Bsymbolic case, discard space allocated for | |
9639 | dynamic pc-relative relocs against symbols which turn out to be | |
9640 | defined in regular objects. For the normal shared case, discard | |
9641 | space for relocs that have become local due to symbol visibility | |
9642 | changes. */ | |
9643 | ||
0e1862bb | 9644 | if (bfd_link_pic (info)) |
65f38f15 | 9645 | { |
9c7a29a3 | 9646 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 9647 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
9648 | generated via assembly. We want calls to protected symbols to |
9649 | resolve directly to the function rather than going via the plt. | |
9650 | If people want function pointer comparisons to work as expected | |
9651 | then they should avoid writing weird assembly. */ | |
09695f56 | 9652 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 9653 | { |
6061a67d | 9654 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
9655 | |
9656 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 9657 | { |
65f38f15 AM |
9658 | p->count -= p->pc_count; |
9659 | p->pc_count = 0; | |
9660 | if (p->count == 0) | |
9661 | *pp = p->next; | |
9662 | else | |
9663 | pp = &p->next; | |
5bd4f169 | 9664 | } |
65f38f15 | 9665 | } |
4e795f50 AM |
9666 | |
9667 | /* Also discard relocs on undefined weak syms with non-default | |
9668 | visibility. */ | |
cab87ef9 AM |
9669 | if (eh->dyn_relocs != NULL |
9670 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
9671 | { |
9672 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9673 | eh->dyn_relocs = NULL; | |
9674 | ||
9675 | /* Make sure this symbol is output as a dynamic symbol. | |
9676 | Undefined weak syms won't yet be marked as dynamic. */ | |
9677 | else if (h->dynindx == -1 | |
9678 | && !h->forced_local) | |
9679 | { | |
9680 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9681 | return FALSE; | |
9682 | } | |
9683 | } | |
65f38f15 | 9684 | } |
25f23106 AM |
9685 | else if (h->type == STT_GNU_IFUNC) |
9686 | { | |
9687 | if (!h->non_got_ref) | |
9688 | eh->dyn_relocs = NULL; | |
9689 | } | |
f4656909 | 9690 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
9691 | { |
9692 | /* For the non-shared case, discard space for relocs against | |
9693 | symbols which turn out to need copy relocs or are not | |
9694 | dynamic. */ | |
9695 | ||
f5385ebf | 9696 | if (!h->non_got_ref |
f5385ebf | 9697 | && !h->def_regular) |
65f38f15 AM |
9698 | { |
9699 | /* Make sure this symbol is output as a dynamic symbol. | |
9700 | Undefined weak syms won't yet be marked as dynamic. */ | |
9701 | if (h->dynindx == -1 | |
f5385ebf | 9702 | && !h->forced_local) |
65f38f15 | 9703 | { |
c152c796 | 9704 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 9705 | return FALSE; |
65f38f15 AM |
9706 | } |
9707 | ||
9708 | /* If that succeeded, we know we'll be keeping all the | |
9709 | relocs. */ | |
9710 | if (h->dynindx != -1) | |
9711 | goto keep; | |
9712 | } | |
9713 | ||
9714 | eh->dyn_relocs = NULL; | |
9715 | ||
ec338859 | 9716 | keep: ; |
65f38f15 AM |
9717 | } |
9718 | ||
9719 | /* Finally, allocate space. */ | |
9720 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9721 | { | |
9722 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
19e08130 | 9723 | if (eh->elf.type == STT_GNU_IFUNC) |
33e44f2e | 9724 | sreloc = htab->elf.irelplt; |
eea6121a | 9725 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
9726 | } |
9727 | ||
b34976b6 | 9728 | return TRUE; |
65f38f15 AM |
9729 | } |
9730 | ||
a345bc8d AM |
9731 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9732 | to set up space for global entry stubs. These are put in glink, | |
9733 | after the branch table. */ | |
65f38f15 | 9734 | |
b34976b6 | 9735 | static bfd_boolean |
a345bc8d | 9736 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9737 | { |
a345bc8d AM |
9738 | struct bfd_link_info *info; |
9739 | struct ppc_link_hash_table *htab; | |
9740 | struct plt_entry *pent; | |
9741 | asection *s; | |
65f38f15 | 9742 | |
a345bc8d AM |
9743 | if (h->root.type == bfd_link_hash_indirect) |
9744 | return TRUE; | |
65f38f15 | 9745 | |
a345bc8d AM |
9746 | if (!h->pointer_equality_needed) |
9747 | return TRUE; | |
65f38f15 | 9748 | |
a345bc8d AM |
9749 | if (h->def_regular) |
9750 | return TRUE; | |
65f38f15 | 9751 | |
a345bc8d AM |
9752 | info = inf; |
9753 | htab = ppc_hash_table (info); | |
9754 | if (htab == NULL) | |
9755 | return FALSE; | |
9756 | ||
9757 | s = htab->glink; | |
9758 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9759 | if (pent->plt.offset != (bfd_vma) -1 | |
9760 | && pent->addend == 0) | |
9761 | { | |
afe397ea AM |
9762 | /* For ELFv2, if this symbol is not defined in a regular file |
9763 | and we are not generating a shared library or pie, then we | |
9764 | need to define the symbol in the executable on a call stub. | |
9765 | This is to avoid text relocations. */ | |
a345bc8d | 9766 | s->size = (s->size + 15) & -16; |
afe397ea AM |
9767 | h->root.u.def.section = s; |
9768 | h->root.u.def.value = s->size; | |
a345bc8d AM |
9769 | s->size += 16; |
9770 | break; | |
9771 | } | |
9772 | return TRUE; | |
9773 | } | |
9774 | ||
9775 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9776 | read-only sections. */ | |
9777 | ||
9778 | static bfd_boolean | |
9779 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
9780 | { | |
9781 | if (h->root.type == bfd_link_hash_indirect) | |
9782 | return TRUE; | |
9783 | ||
9784 | if (readonly_dynrelocs (h)) | |
9785 | { | |
9786 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
9787 | ||
9788 | /* Not an error, just cut short the traversal. */ | |
9789 | return FALSE; | |
65f38f15 | 9790 | } |
b34976b6 | 9791 | return TRUE; |
65f38f15 AM |
9792 | } |
9793 | ||
9794 | /* Set the sizes of the dynamic sections. */ | |
9795 | ||
b34976b6 | 9796 | static bfd_boolean |
ee67d69a | 9797 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9798 | struct bfd_link_info *info) |
65f38f15 AM |
9799 | { |
9800 | struct ppc_link_hash_table *htab; | |
9801 | bfd *dynobj; | |
9802 | asection *s; | |
b34976b6 | 9803 | bfd_boolean relocs; |
65f38f15 | 9804 | bfd *ibfd; |
7865406b | 9805 | struct got_entry *first_tlsld; |
65f38f15 AM |
9806 | |
9807 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9808 | if (htab == NULL) |
9809 | return FALSE; | |
9810 | ||
65f38f15 AM |
9811 | dynobj = htab->elf.dynobj; |
9812 | if (dynobj == NULL) | |
9813 | abort (); | |
9814 | ||
9815 | if (htab->elf.dynamic_sections_created) | |
9816 | { | |
9817 | /* Set the contents of the .interp section to the interpreter. */ | |
0e1862bb | 9818 | if (bfd_link_executable (info)) |
65f38f15 | 9819 | { |
3d4d4302 | 9820 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9821 | if (s == NULL) |
9822 | abort (); | |
eea6121a | 9823 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9824 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9825 | } | |
9826 | } | |
9827 | ||
9828 | /* Set up .got offsets for local syms, and space for local dynamic | |
9829 | relocs. */ | |
c72f2fb2 | 9830 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9831 | { |
411e1bfb AM |
9832 | struct got_entry **lgot_ents; |
9833 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9834 | struct plt_entry **local_plt; |
9835 | struct plt_entry **end_local_plt; | |
f961d9dd | 9836 | unsigned char *lgot_masks; |
65f38f15 AM |
9837 | bfd_size_type locsymcount; |
9838 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9839 | |
0c8d6e5c | 9840 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9841 | continue; |
9842 | ||
9843 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9844 | { | |
19e08130 | 9845 | struct ppc_dyn_relocs *p; |
65f38f15 | 9846 | |
6edfbbad | 9847 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9848 | { |
ec338859 AM |
9849 | if (!bfd_is_abs_section (p->sec) |
9850 | && bfd_is_abs_section (p->sec->output_section)) | |
9851 | { | |
9852 | /* Input section has been discarded, either because | |
9853 | it is a copy of a linkonce section or due to | |
9854 | linker script /DISCARD/, so we'll be discarding | |
9855 | the relocs too. */ | |
9856 | } | |
248866a8 | 9857 | else if (p->count != 0) |
ec338859 | 9858 | { |
19e08130 AM |
9859 | asection *srel = elf_section_data (p->sec)->sreloc; |
9860 | if (p->ifunc) | |
33e44f2e | 9861 | srel = htab->elf.irelplt; |
eea6121a | 9862 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9863 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9864 | info->flags |= DF_TEXTREL; | |
ec338859 | 9865 | } |
65f38f15 AM |
9866 | } |
9867 | } | |
9868 | ||
411e1bfb AM |
9869 | lgot_ents = elf_local_got_ents (ibfd); |
9870 | if (!lgot_ents) | |
65f38f15 AM |
9871 | continue; |
9872 | ||
0ffa91dd | 9873 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9874 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9875 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9876 | local_plt = (struct plt_entry **) end_lgot_ents; |
9877 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9878 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9879 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9880 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9881 | { |
0b8bcf0d | 9882 | struct got_entry **pent, *ent; |
411e1bfb | 9883 | |
0b8bcf0d AM |
9884 | pent = lgot_ents; |
9885 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9886 | if (ent->got.refcount > 0) |
9887 | { | |
e7b938ca | 9888 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9889 | { |
927be08e | 9890 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9891 | *pent = ent->next; |
411e1bfb AM |
9892 | } |
9893 | else | |
9894 | { | |
19e08130 AM |
9895 | unsigned int ent_size = 8; |
9896 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9897 | ||
eea6121a | 9898 | ent->got.offset = s->size; |
e7b938ca | 9899 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9900 | { |
19e08130 AM |
9901 | ent_size *= 2; |
9902 | rel_size *= 2; | |
9903 | } | |
9904 | s->size += ent_size; | |
9905 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9906 | { | |
33e44f2e | 9907 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9908 | htab->got_reli_size += rel_size; |
9909 | } | |
0e1862bb | 9910 | else if (bfd_link_pic (info)) |
19e08130 AM |
9911 | { |
9912 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9913 | srel->size += rel_size; | |
927be08e | 9914 | } |
0b8bcf0d | 9915 | pent = &ent->next; |
411e1bfb AM |
9916 | } |
9917 | } | |
9918 | else | |
0b8bcf0d | 9919 | *pent = ent->next; |
65f38f15 | 9920 | } |
e054468f AM |
9921 | |
9922 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9923 | for (; local_plt < end_local_plt; ++local_plt) | |
9924 | { | |
9925 | struct plt_entry *ent; | |
9926 | ||
9927 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9928 | if (ent->plt.refcount > 0) | |
9929 | { | |
33e44f2e | 9930 | s = htab->elf.iplt; |
e054468f | 9931 | ent->plt.offset = s->size; |
b9e5796b | 9932 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 9933 | |
33e44f2e | 9934 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9935 | } |
9936 | else | |
9937 | ent->plt.offset = (bfd_vma) -1; | |
9938 | } | |
65f38f15 AM |
9939 | } |
9940 | ||
9941 | /* Allocate global sym .plt and .got entries, and space for global | |
9942 | sym dynamic relocs. */ | |
4ce794b7 | 9943 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d AM |
9944 | /* Stash the end of glink branch table. */ |
9945 | if (htab->glink != NULL) | |
9946 | htab->glink->rawsize = htab->glink->size; | |
9947 | ||
0e1862bb | 9948 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 9949 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 9950 | |
7865406b | 9951 | first_tlsld = NULL; |
c72f2fb2 | 9952 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 9953 | { |
7865406b AM |
9954 | struct got_entry *ent; |
9955 | ||
0c8d6e5c | 9956 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9957 | continue; |
9958 | ||
7865406b AM |
9959 | ent = ppc64_tlsld_got (ibfd); |
9960 | if (ent->got.refcount > 0) | |
102890f0 | 9961 | { |
7865406b | 9962 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9963 | { |
7865406b AM |
9964 | ent->is_indirect = TRUE; |
9965 | ent->got.ent = first_tlsld; | |
9966 | } | |
9967 | else | |
9968 | { | |
9969 | if (first_tlsld == NULL) | |
9970 | first_tlsld = ent; | |
9971 | s = ppc64_elf_tdata (ibfd)->got; | |
9972 | ent->got.offset = s->size; | |
9973 | ent->owner = ibfd; | |
9974 | s->size += 16; | |
0e1862bb | 9975 | if (bfd_link_pic (info)) |
7865406b AM |
9976 | { |
9977 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9978 | srel->size += sizeof (Elf64_External_Rela); | |
9979 | } | |
102890f0 AM |
9980 | } |
9981 | } | |
9982 | else | |
7865406b | 9983 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9984 | } |
9985 | ||
65f38f15 AM |
9986 | /* We now have determined the sizes of the various dynamic sections. |
9987 | Allocate memory for them. */ | |
b34976b6 | 9988 | relocs = FALSE; |
65f38f15 AM |
9989 | for (s = dynobj->sections; s != NULL; s = s->next) |
9990 | { | |
9991 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9992 | continue; | |
9993 | ||
4ce794b7 | 9994 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9995 | /* These haven't been allocated yet; don't strip. */ |
9996 | continue; | |
33e44f2e AM |
9997 | else if (s == htab->elf.sgot |
9998 | || s == htab->elf.splt | |
9999 | || s == htab->elf.iplt | |
c456f082 AM |
10000 | || s == htab->glink |
10001 | || s == htab->dynbss) | |
65f38f15 AM |
10002 | { |
10003 | /* Strip this section if we don't need it; see the | |
10004 | comment below. */ | |
5bd4f169 | 10005 | } |
58d180e8 AM |
10006 | else if (s == htab->glink_eh_frame) |
10007 | { | |
10008 | if (!bfd_is_abs_section (s->output_section)) | |
10009 | /* Not sized yet. */ | |
10010 | continue; | |
10011 | } | |
70cc837d | 10012 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10013 | { |
c456f082 | 10014 | if (s->size != 0) |
5bd4f169 | 10015 | { |
33e44f2e | 10016 | if (s != htab->elf.srelplt) |
b34976b6 | 10017 | relocs = TRUE; |
5bd4f169 AM |
10018 | |
10019 | /* We use the reloc_count field as a counter if we need | |
10020 | to copy relocs into the output file. */ | |
10021 | s->reloc_count = 0; | |
10022 | } | |
10023 | } | |
65f38f15 | 10024 | else |
5bd4f169 AM |
10025 | { |
10026 | /* It's not one of our sections, so don't allocate space. */ | |
10027 | continue; | |
10028 | } | |
10029 | ||
eea6121a | 10030 | if (s->size == 0) |
5bd4f169 | 10031 | { |
c456f082 AM |
10032 | /* If we don't need this section, strip it from the |
10033 | output file. This is mostly to handle .rela.bss and | |
10034 | .rela.plt. We must create both sections in | |
10035 | create_dynamic_sections, because they must be created | |
10036 | before the linker maps input sections to output | |
10037 | sections. The linker does that before | |
10038 | adjust_dynamic_symbol is called, and it is that | |
10039 | function which decides whether anything needs to go | |
10040 | into these sections. */ | |
8423293d | 10041 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10042 | continue; |
10043 | } | |
10044 | ||
c456f082 | 10045 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10046 | continue; |
10047 | ||
65f38f15 AM |
10048 | /* Allocate memory for the section contents. We use bfd_zalloc |
10049 | here in case unused entries are not reclaimed before the | |
10050 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10051 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10052 | sections instead of garbage. | |
10053 | We also rely on the section contents being zero when writing | |
10054 | the GOT. */ | |
eea6121a | 10055 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10056 | if (s->contents == NULL) |
b34976b6 | 10057 | return FALSE; |
5bd4f169 AM |
10058 | } |
10059 | ||
c72f2fb2 | 10060 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10061 | { |
0c8d6e5c | 10062 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10063 | continue; |
10064 | ||
e717da7e | 10065 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10066 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10067 | { |
eea6121a | 10068 | if (s->size == 0) |
8423293d | 10069 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10070 | else |
10071 | { | |
eea6121a | 10072 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10073 | if (s->contents == NULL) |
10074 | return FALSE; | |
10075 | } | |
10076 | } | |
10077 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10078 | if (s != NULL) | |
10079 | { | |
eea6121a | 10080 | if (s->size == 0) |
8423293d | 10081 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10082 | else |
10083 | { | |
eea6121a | 10084 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10085 | if (s->contents == NULL) |
10086 | return FALSE; | |
10087 | relocs = TRUE; | |
10088 | s->reloc_count = 0; | |
10089 | } | |
10090 | } | |
10091 | } | |
10092 | ||
e86ce104 | 10093 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10094 | { |
e8910a83 AM |
10095 | bfd_boolean tls_opt; |
10096 | ||
5bd4f169 AM |
10097 | /* Add some entries to the .dynamic section. We fill in the |
10098 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10099 | must add the entries now so that we get the correct size for | |
10100 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10101 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10102 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10103 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10104 | |
0e1862bb | 10105 | if (bfd_link_executable (info)) |
5bd4f169 | 10106 | { |
dc810e39 | 10107 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10108 | return FALSE; |
5bd4f169 AM |
10109 | } |
10110 | ||
33e44f2e | 10111 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10112 | { |
dc810e39 AM |
10113 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10114 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10115 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10116 | || !add_dynamic_entry (DT_JMPREL, 0) |
10117 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10118 | return FALSE; |
5bd4f169 AM |
10119 | } |
10120 | ||
ee67d69a | 10121 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10122 | { |
10123 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10124 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10125 | return FALSE; |
19397422 AM |
10126 | } |
10127 | ||
e7d1c40c | 10128 | tls_opt = (!htab->params->no_tls_get_addr_opt |
e8910a83 AM |
10129 | && htab->tls_get_addr_fd != NULL |
10130 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10131 | if (tls_opt || !htab->opd_abi) | |
10132 | { | |
10133 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10134 | return FALSE; | |
10135 | } | |
a7f2871e | 10136 | |
5bd4f169 AM |
10137 | if (relocs) |
10138 | { | |
dc810e39 AM |
10139 | if (!add_dynamic_entry (DT_RELA, 0) |
10140 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10141 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10142 | return FALSE; |
5bd4f169 | 10143 | |
65f38f15 AM |
10144 | /* If any dynamic relocs apply to a read-only section, |
10145 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10146 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10147 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10148 | |
65f38f15 | 10149 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10150 | { |
65f38f15 | 10151 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10152 | return FALSE; |
5bd4f169 | 10153 | } |
5bd4f169 | 10154 | } |
5bd4f169 | 10155 | } |
65f38f15 | 10156 | #undef add_dynamic_entry |
5bd4f169 | 10157 | |
b34976b6 | 10158 | return TRUE; |
5bd4f169 AM |
10159 | } |
10160 | ||
a345bc8d AM |
10161 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10162 | ||
10163 | static bfd_boolean | |
10164 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10165 | { | |
10166 | if (h->plt.plist != NULL | |
10167 | && !h->def_regular | |
10168 | && !h->pointer_equality_needed) | |
10169 | return FALSE; | |
10170 | ||
10171 | return _bfd_elf_hash_symbol (h); | |
10172 | } | |
10173 | ||
721956f4 | 10174 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10175 | |
4ce794b7 AM |
10176 | static inline enum ppc_stub_type |
10177 | ppc_type_of_stub (asection *input_sec, | |
10178 | const Elf_Internal_Rela *rel, | |
10179 | struct ppc_link_hash_entry **hash, | |
e054468f | 10180 | struct plt_entry **plt_ent, |
6911b7dc AM |
10181 | bfd_vma destination, |
10182 | unsigned long local_off) | |
5bd4f169 | 10183 | { |
721956f4 AM |
10184 | struct ppc_link_hash_entry *h = *hash; |
10185 | bfd_vma location; | |
10186 | bfd_vma branch_offset; | |
10187 | bfd_vma max_branch_offset; | |
4ce794b7 | 10188 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10189 | |
721956f4 AM |
10190 | if (h != NULL) |
10191 | { | |
e054468f | 10192 | struct plt_entry *ent; |
7fe2b9a6 | 10193 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10194 | if (h->oh != NULL |
10195 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10196 | { |
10197 | fdh = ppc_follow_link (h->oh); | |
10198 | *hash = fdh; | |
10199 | } | |
8387904d | 10200 | |
e054468f AM |
10201 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10202 | if (ent->addend == rel->r_addend | |
10203 | && ent->plt.offset != (bfd_vma) -1) | |
10204 | { | |
e054468f AM |
10205 | *plt_ent = ent; |
10206 | return ppc_stub_plt_call; | |
10207 | } | |
5bd4f169 | 10208 | |
7fe2b9a6 AM |
10209 | /* Here, we know we don't have a plt entry. If we don't have a |
10210 | either a defined function descriptor or a defined entry symbol | |
10211 | in a regular object file, then it is pointless trying to make | |
10212 | any other type of stub. */ | |
854b41e7 AM |
10213 | if (!is_static_defined (&fdh->elf) |
10214 | && !is_static_defined (&h->elf)) | |
721956f4 | 10215 | return ppc_stub_none; |
5d1634d7 | 10216 | } |
e054468f AM |
10217 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10218 | { | |
10219 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10220 | struct plt_entry **local_plt = (struct plt_entry **) | |
10221 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10222 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10223 | ||
10224 | if (local_plt[r_symndx] != NULL) | |
10225 | { | |
10226 | struct plt_entry *ent; | |
10227 | ||
10228 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10229 | if (ent->addend == rel->r_addend | |
10230 | && ent->plt.offset != (bfd_vma) -1) | |
10231 | { | |
10232 | *plt_ent = ent; | |
10233 | return ppc_stub_plt_call; | |
10234 | } | |
10235 | } | |
10236 | } | |
5d1634d7 | 10237 | |
721956f4 AM |
10238 | /* Determine where the call point is. */ |
10239 | location = (input_sec->output_offset | |
10240 | + input_sec->output_section->vma | |
10241 | + rel->r_offset); | |
5d1634d7 | 10242 | |
721956f4 AM |
10243 | branch_offset = destination - location; |
10244 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10245 | |
721956f4 AM |
10246 | /* Determine if a long branch stub is needed. */ |
10247 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10248 | if (r_type != R_PPC64_REL24) |
721956f4 | 10249 | max_branch_offset = 1 << 15; |
5d1634d7 | 10250 | |
6911b7dc | 10251 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10252 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10253 | is needed later. */ | |
10254 | return ppc_stub_long_branch; | |
5d1634d7 | 10255 | |
721956f4 | 10256 | return ppc_stub_none; |
5d1634d7 AM |
10257 | } |
10258 | ||
794e51c0 AM |
10259 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10260 | to update a plt entry in one thread and have another thread see a | |
10261 | stale zero toc entry. To avoid this we need some sort of acquire | |
10262 | barrier in the call stub. One solution is to make the load of the | |
10263 | toc word seem to appear to depend on the load of the function entry | |
10264 | word. Another solution is to test for r2 being zero, and branch to | |
10265 | the appropriate glink entry if so. | |
10266 | ||
10267 | . fake dep barrier compare | |
71a39c98 AM |
10268 | . ld 12,xxx(2) ld 12,xxx(2) |
10269 | . mtctr 12 mtctr 12 | |
10270 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10271 | . add 2,2,11 cmpldi 2,0 |
10272 | . ld 2,xxx+8(2) bnectr+ | |
10273 | . bctr b <glink_entry> | |
10274 | ||
10275 | The solution involving the compare turns out to be faster, so | |
10276 | that's what we use unless the branch won't reach. */ | |
10277 | ||
10278 | #define ALWAYS_USE_FAKE_DEP 0 | |
10279 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10280 | |
5d1634d7 AM |
10281 | #define PPC_LO(v) ((v) & 0xffff) |
10282 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10283 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10284 | ||
794e51c0 AM |
10285 | static inline unsigned int |
10286 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10287 | struct ppc_stub_hash_entry *stub_entry, | |
10288 | bfd_vma off) | |
10289 | { | |
b9e5796b AM |
10290 | unsigned size = 12; |
10291 | ||
10292 | if (ALWAYS_EMIT_R2SAVE | |
10293 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10294 | size += 4; | |
10295 | if (PPC_HA (off) != 0) | |
794e51c0 | 10296 | size += 4; |
b9e5796b AM |
10297 | if (htab->opd_abi) |
10298 | { | |
10299 | size += 4; | |
e7d1c40c | 10300 | if (htab->params->plt_static_chain) |
b9e5796b | 10301 | size += 4; |
bd4d2eaa AM |
10302 | if (htab->params->plt_thread_safe |
10303 | && htab->elf.dynamic_sections_created | |
10304 | && stub_entry->h != NULL | |
10305 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10306 | size += 8; |
e7d1c40c | 10307 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10308 | size += 4; |
10309 | } | |
794e51c0 AM |
10310 | if (stub_entry->h != NULL |
10311 | && (stub_entry->h == htab->tls_get_addr_fd | |
10312 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10313 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 AM |
10314 | size += 13 * 4; |
10315 | return size; | |
10316 | } | |
10317 | ||
10318 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
10319 | then return the padding needed to do so. */ | |
10320 | static inline unsigned int | |
10321 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10322 | struct ppc_stub_hash_entry *stub_entry, | |
10323 | bfd_vma plt_off) | |
10324 | { | |
e7d1c40c | 10325 | int stub_align = 1 << htab->params->plt_stub_align; |
794e51c0 | 10326 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
6f20ed8a | 10327 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 AM |
10328 | |
10329 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
e05fa0ba | 10330 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10331 | return stub_align - (stub_off & (stub_align - 1)); |
10332 | return 0; | |
10333 | } | |
10334 | ||
10335 | /* Build a .plt call stub. */ | |
10336 | ||
10337 | static inline bfd_byte * | |
10338 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10339 | struct ppc_stub_hash_entry *stub_entry, | |
10340 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10341 | { | |
e7d1c40c | 10342 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10343 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10344 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10345 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10346 | && htab->elf.dynamic_sections_created | |
10347 | && stub_entry->h != NULL | |
10348 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10349 | bfd_boolean use_fake_dep = plt_thread_safe; |
10350 | bfd_vma cmp_branch_off = 0; | |
10351 | ||
10352 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10353 | && plt_load_toc |
794e51c0 | 10354 | && plt_thread_safe |
bd4d2eaa AM |
10355 | && !((stub_entry->h == htab->tls_get_addr_fd |
10356 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10357 | && !htab->params->no_tls_get_addr_opt)) |
794e51c0 AM |
10358 | { |
10359 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10360 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10361 | / PLT_ENTRY_SIZE (htab)); | |
794e51c0 AM |
10362 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
10363 | bfd_vma to, from; | |
10364 | ||
68d62958 AM |
10365 | if (pltindex > 32768) |
10366 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10367 | to = (glinkoff |
10368 | + htab->glink->output_offset | |
10369 | + htab->glink->output_section->vma); | |
6f20ed8a | 10370 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10371 | + 4 * (ALWAYS_EMIT_R2SAVE |
10372 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10373 | + 4 * (PPC_HA (offset) != 0) | |
10374 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10375 | != PPC_HA (offset)) | |
10376 | + 4 * (plt_static_chain != 0) | |
10377 | + 20 | |
6f20ed8a AM |
10378 | + stub_entry->group->stub_sec->output_offset |
10379 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10380 | cmp_branch_off = to - from; |
10381 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10382 | } | |
10383 | ||
ac2df442 AM |
10384 | if (PPC_HA (offset) != 0) |
10385 | { | |
176a0d42 AM |
10386 | if (r != NULL) |
10387 | { | |
794e51c0 AM |
10388 | if (ALWAYS_EMIT_R2SAVE |
10389 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10390 | r[0].r_offset += 4; | |
176a0d42 | 10391 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10392 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10393 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10394 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10395 | if (plt_load_toc) |
176a0d42 | 10396 | { |
b9e5796b | 10397 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10398 | { |
b9e5796b AM |
10399 | r[2].r_offset = r[1].r_offset + 4; |
10400 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10401 | r[2].r_addend = r[0].r_addend; | |
10402 | } | |
10403 | else | |
10404 | { | |
10405 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10406 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10407 | r[2].r_addend = r[0].r_addend + 8; | |
10408 | if (plt_static_chain) | |
10409 | { | |
10410 | r[3].r_offset = r[2].r_offset + 4; | |
10411 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10412 | r[3].r_addend = r[0].r_addend + 16; | |
10413 | } | |
c7131b65 | 10414 | } |
176a0d42 AM |
10415 | } |
10416 | } | |
794e51c0 AM |
10417 | if (ALWAYS_EMIT_R2SAVE |
10418 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10419 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10420 | if (plt_load_toc) |
10421 | { | |
10422 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10423 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10424 | } | |
10425 | else | |
10426 | { | |
10427 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10428 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10429 | } | |
b9e5796b AM |
10430 | if (plt_load_toc |
10431 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10432 | { |
71a39c98 | 10433 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10434 | offset = 0; |
10435 | } | |
71a39c98 | 10436 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10437 | if (plt_load_toc) |
794e51c0 | 10438 | { |
b9e5796b AM |
10439 | if (use_fake_dep) |
10440 | { | |
10441 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10442 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10443 | } | |
10444 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10445 | if (plt_static_chain) | |
10446 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10447 | } |
ac2df442 AM |
10448 | } |
10449 | else | |
10450 | { | |
176a0d42 AM |
10451 | if (r != NULL) |
10452 | { | |
794e51c0 AM |
10453 | if (ALWAYS_EMIT_R2SAVE |
10454 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10455 | r[0].r_offset += 4; | |
176a0d42 | 10456 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10457 | if (plt_load_toc) |
176a0d42 | 10458 | { |
b9e5796b | 10459 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10460 | { |
b9e5796b AM |
10461 | r[1].r_offset = r[0].r_offset + 4; |
10462 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10463 | r[1].r_addend = r[0].r_addend; | |
10464 | } | |
10465 | else | |
10466 | { | |
10467 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10468 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10469 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10470 | if (plt_static_chain) | |
10471 | { | |
10472 | r[2].r_offset = r[1].r_offset + 4; | |
10473 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10474 | r[2].r_addend = r[0].r_addend + 8; | |
10475 | } | |
c7131b65 | 10476 | } |
176a0d42 AM |
10477 | } |
10478 | } | |
794e51c0 AM |
10479 | if (ALWAYS_EMIT_R2SAVE |
10480 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10481 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10482 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10483 | if (plt_load_toc |
10484 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10485 | { |
10486 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10487 | offset = 0; | |
10488 | } | |
71a39c98 | 10489 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10490 | if (plt_load_toc) |
794e51c0 | 10491 | { |
b9e5796b AM |
10492 | if (use_fake_dep) |
10493 | { | |
10494 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10495 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10496 | } | |
10497 | if (plt_static_chain) | |
10498 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10499 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10500 | } |
ac2df442 | 10501 | } |
b9e5796b | 10502 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10503 | { |
10504 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10505 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10506 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10507 | } |
10508 | else | |
10509 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
10510 | return p; |
10511 | } | |
10512 | ||
a7f2871e AM |
10513 | /* Build a special .plt call stub for __tls_get_addr. */ |
10514 | ||
10515 | #define LD_R11_0R3 0xe9630000 | |
10516 | #define LD_R12_0R3 0xe9830000 | |
10517 | #define MR_R0_R3 0x7c601b78 | |
10518 | #define CMPDI_R11_0 0x2c2b0000 | |
10519 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10520 | #define BEQLR 0x4d820020 | |
10521 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10522 | #define STD_R11_0R1 0xf9610000 |
10523 | #define BCTRL 0x4e800421 | |
10524 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10525 | #define MTLR_R11 0x7d6803a6 |
10526 | ||
10527 | static inline bfd_byte * | |
794e51c0 AM |
10528 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10529 | struct ppc_stub_hash_entry *stub_entry, | |
10530 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10531 | { |
e7d1c40c | 10532 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 10533 | |
a7f2871e AM |
10534 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10535 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10536 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10537 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10538 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10539 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10540 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
10541 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
a078d95a | 10542 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10543 | |
10544 | if (r != NULL) | |
10545 | r[0].r_offset += 9 * 4; | |
794e51c0 | 10546 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
10547 | bfd_put_32 (obfd, BCTRL, p - 4); |
10548 | ||
a078d95a | 10549 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 10550 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10551 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10552 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10553 | ||
10554 | return p; | |
10555 | } | |
10556 | ||
176a0d42 AM |
10557 | static Elf_Internal_Rela * |
10558 | get_relocs (asection *sec, int count) | |
10559 | { | |
10560 | Elf_Internal_Rela *relocs; | |
10561 | struct bfd_elf_section_data *elfsec_data; | |
10562 | ||
10563 | elfsec_data = elf_section_data (sec); | |
10564 | relocs = elfsec_data->relocs; | |
10565 | if (relocs == NULL) | |
10566 | { | |
10567 | bfd_size_type relsize; | |
10568 | relsize = sec->reloc_count * sizeof (*relocs); | |
10569 | relocs = bfd_alloc (sec->owner, relsize); | |
10570 | if (relocs == NULL) | |
10571 | return NULL; | |
10572 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10573 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10574 | sizeof (Elf_Internal_Shdr)); | |
10575 | if (elfsec_data->rela.hdr == NULL) | |
10576 | return NULL; | |
10577 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10578 | * sizeof (Elf64_External_Rela)); | |
10579 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10580 | sec->reloc_count = 0; |
10581 | } | |
10582 | relocs += sec->reloc_count; | |
10583 | sec->reloc_count += count; | |
10584 | return relocs; | |
10585 | } | |
10586 | ||
aa374f67 | 10587 | static bfd_vma |
25f53a85 | 10588 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10589 | struct ppc_stub_hash_entry *stub_entry) |
10590 | { | |
25f53a85 | 10591 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 10592 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
10593 | |
10594 | if (r2off == 0) | |
10595 | { | |
10596 | /* Support linking -R objects. Get the toc pointer from the | |
10597 | opd entry. */ | |
10598 | char buf[8]; | |
b9e5796b AM |
10599 | if (!htab->opd_abi) |
10600 | return r2off; | |
aa374f67 AM |
10601 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10602 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10603 | ||
10604 | if (strcmp (opd->name, ".opd") != 0 | |
10605 | || opd->reloc_count != 0) | |
10606 | { | |
bc30df16 | 10607 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 10608 | stub_entry->h->elf.root.root.string); |
aa374f67 | 10609 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 10610 | return (bfd_vma) -1; |
aa374f67 AM |
10611 | } |
10612 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 10613 | return (bfd_vma) -1; |
aa374f67 | 10614 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 10615 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 10616 | } |
6f20ed8a | 10617 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
10618 | return r2off; |
10619 | } | |
10620 | ||
b34976b6 | 10621 | static bfd_boolean |
4ce794b7 | 10622 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10623 | { |
721956f4 AM |
10624 | struct ppc_stub_hash_entry *stub_entry; |
10625 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10626 | struct bfd_link_info *info; |
10627 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10628 | bfd_byte *loc; |
10629 | bfd_byte *p; | |
ee75fd95 | 10630 | bfd_vma dest, off; |
721956f4 | 10631 | int size; |
176a0d42 | 10632 | Elf_Internal_Rela *r; |
e054468f | 10633 | asection *plt; |
5d1634d7 | 10634 | |
721956f4 AM |
10635 | /* Massage our args to the form they really have. */ |
10636 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10637 | info = in_arg; |
5d1634d7 | 10638 | |
5d1634d7 | 10639 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10640 | if (htab == NULL) |
10641 | return FALSE; | |
5d1634d7 | 10642 | |
721956f4 | 10643 | /* Make a note of the offset within the stubs for this entry. */ |
6f20ed8a AM |
10644 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
10645 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 10646 | |
4ce794b7 | 10647 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10648 | switch (stub_entry->stub_type) |
5d1634d7 | 10649 | { |
721956f4 | 10650 | case ppc_stub_long_branch: |
ad8e1ba5 | 10651 | case ppc_stub_long_branch_r2off: |
721956f4 | 10652 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10653 | dest = (stub_entry->target_value |
10654 | + stub_entry->target_section->output_offset | |
10655 | + stub_entry->target_section->output_section->vma); | |
10656 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10657 | off = dest; | |
5d1634d7 | 10658 | |
721956f4 AM |
10659 | /* And this is where we are coming from. */ |
10660 | off -= (stub_entry->stub_offset | |
6f20ed8a AM |
10661 | + stub_entry->group->stub_sec->output_offset |
10662 | + stub_entry->group->stub_sec->output_section->vma); | |
e86ce104 | 10663 | |
ac2df442 AM |
10664 | size = 4; |
10665 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10666 | { |
25f53a85 | 10667 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10668 | |
a7c49797 | 10669 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10670 | { |
10671 | htab->stub_error = TRUE; | |
10672 | return FALSE; | |
10673 | } | |
e7d1c40c | 10674 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10675 | loc += 4; |
a7c49797 | 10676 | size = 8; |
ac2df442 AM |
10677 | if (PPC_HA (r2off) != 0) |
10678 | { | |
e7d1c40c AM |
10679 | bfd_put_32 (htab->params->stub_bfd, |
10680 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
ac2df442 | 10681 | loc += 4; |
a7c49797 AM |
10682 | size += 4; |
10683 | } | |
10684 | if (PPC_LO (r2off) != 0) | |
10685 | { | |
10686 | bfd_put_32 (htab->params->stub_bfd, | |
10687 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
10688 | loc += 4; | |
10689 | size += 4; | |
ac2df442 | 10690 | } |
ac2df442 | 10691 | off -= size - 4; |
ad8e1ba5 | 10692 | } |
e7d1c40c | 10693 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10694 | |
5c3dead3 AM |
10695 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10696 | { | |
bc30df16 AM |
10697 | info->callbacks->einfo |
10698 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10699 | stub_entry->root.string); | |
5c3dead3 AM |
10700 | htab->stub_error = TRUE; |
10701 | return FALSE; | |
10702 | } | |
ee75fd95 AM |
10703 | |
10704 | if (info->emitrelocations) | |
10705 | { | |
6f20ed8a | 10706 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
10707 | if (r == NULL) |
10708 | return FALSE; | |
6f20ed8a | 10709 | r->r_offset = loc - stub_entry->group->stub_sec->contents; |
ee75fd95 AM |
10710 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
10711 | r->r_addend = dest; | |
10712 | if (stub_entry->h != NULL) | |
10713 | { | |
10714 | struct elf_link_hash_entry **hashes; | |
10715 | unsigned long symndx; | |
10716 | struct ppc_link_hash_entry *h; | |
10717 | ||
e7d1c40c | 10718 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10719 | if (hashes == NULL) |
10720 | { | |
10721 | bfd_size_type hsize; | |
10722 | ||
10723 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10724 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10725 | if (hashes == NULL) |
10726 | return FALSE; | |
e7d1c40c | 10727 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10728 | htab->stub_globals = 1; |
10729 | } | |
10730 | symndx = htab->stub_globals++; | |
10731 | h = stub_entry->h; | |
10732 | hashes[symndx] = &h->elf; | |
10733 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10734 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10735 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10736 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10737 | /* H is an opd symbol. The addend must be zero. */ | |
10738 | r->r_addend = 0; | |
10739 | else | |
10740 | { | |
10741 | off = (h->elf.root.u.def.value | |
10742 | + h->elf.root.u.def.section->output_offset | |
10743 | + h->elf.root.u.def.section->output_section->vma); | |
10744 | r->r_addend -= off; | |
10745 | } | |
10746 | } | |
10747 | } | |
721956f4 | 10748 | break; |
e86ce104 | 10749 | |
721956f4 | 10750 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10751 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10752 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10753 | stub_entry->root.string + 9, | |
b34976b6 | 10754 | FALSE, FALSE); |
721956f4 AM |
10755 | if (br_entry == NULL) |
10756 | { | |
8de848d8 | 10757 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10758 | stub_entry->root.string); |
b34976b6 AM |
10759 | htab->stub_error = TRUE; |
10760 | return FALSE; | |
721956f4 AM |
10761 | } |
10762 | ||
176a0d42 AM |
10763 | dest = (stub_entry->target_value |
10764 | + stub_entry->target_section->output_offset | |
10765 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10766 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10767 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10768 | |
176a0d42 | 10769 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10770 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10771 | |
f94498ff | 10772 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10773 | { |
f94498ff | 10774 | br_entry->iter = 0; |
84f5d08e | 10775 | |
f94498ff | 10776 | if (htab->relbrlt != NULL) |
84f5d08e | 10777 | { |
f94498ff AM |
10778 | /* Create a reloc for the branch lookup table entry. */ |
10779 | Elf_Internal_Rela rela; | |
10780 | bfd_byte *rl; | |
10781 | ||
10782 | rela.r_offset = (br_entry->offset | |
10783 | + htab->brlt->output_offset | |
10784 | + htab->brlt->output_section->vma); | |
10785 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10786 | rela.r_addend = dest; |
f94498ff AM |
10787 | |
10788 | rl = htab->relbrlt->contents; | |
10789 | rl += (htab->relbrlt->reloc_count++ | |
10790 | * sizeof (Elf64_External_Rela)); | |
10791 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10792 | } | |
10793 | else if (info->emitrelocations) | |
10794 | { | |
176a0d42 AM |
10795 | r = get_relocs (htab->brlt, 1); |
10796 | if (r == NULL) | |
10797 | return FALSE; | |
10798 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10799 | normal reloc processing. Symbols and offsets are not | |
10800 | translated from input file to output file form, so | |
10801 | set up the offset per the output file. */ | |
f94498ff AM |
10802 | r->r_offset = (br_entry->offset |
10803 | + htab->brlt->output_offset | |
10804 | + htab->brlt->output_section->vma); | |
10805 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10806 | r->r_addend = dest; |
84f5d08e | 10807 | } |
84f5d08e | 10808 | } |
721956f4 | 10809 | |
176a0d42 AM |
10810 | dest = (br_entry->offset |
10811 | + htab->brlt->output_offset | |
10812 | + htab->brlt->output_section->vma); | |
10813 | ||
10814 | off = (dest | |
4ce794b7 | 10815 | - elf_gp (htab->brlt->output_section->owner) |
6f20ed8a | 10816 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 10817 | |
ad8e1ba5 | 10818 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10819 | { |
25f53a85 | 10820 | info->callbacks->einfo |
bc30df16 | 10821 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10822 | stub_entry->root.string); |
5d1634d7 | 10823 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10824 | htab->stub_error = TRUE; |
10825 | return FALSE; | |
5d1634d7 | 10826 | } |
41bd81ab | 10827 | |
176a0d42 AM |
10828 | if (info->emitrelocations) |
10829 | { | |
6f20ed8a | 10830 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
10831 | if (r == NULL) |
10832 | return FALSE; | |
6f20ed8a | 10833 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
10834 | if (bfd_big_endian (info->output_bfd)) |
10835 | r[0].r_offset += 2; | |
00f412ee | 10836 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10837 | r[0].r_offset += 4; |
10838 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10839 | r[0].r_addend = dest; | |
10840 | if (PPC_HA (off) != 0) | |
10841 | { | |
10842 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10843 | r[1].r_offset = r[0].r_offset + 4; | |
10844 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10845 | r[1].r_addend = r[0].r_addend; | |
10846 | } | |
10847 | } | |
10848 | ||
00f412ee | 10849 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10850 | { |
176a0d42 | 10851 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10852 | { |
10853 | size = 16; | |
e7d1c40c | 10854 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10855 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10856 | loc += 4; |
e7d1c40c | 10857 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10858 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10859 | } |
10860 | else | |
10861 | { | |
10862 | size = 12; | |
e7d1c40c AM |
10863 | bfd_put_32 (htab->params->stub_bfd, |
10864 | LD_R12_0R2 | PPC_LO (off), loc); | |
ac2df442 | 10865 | } |
ad8e1ba5 AM |
10866 | } |
10867 | else | |
10868 | { | |
25f53a85 | 10869 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10870 | |
a7c49797 | 10871 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
10872 | { |
10873 | htab->stub_error = TRUE; | |
10874 | return FALSE; | |
10875 | } | |
ad8e1ba5 | 10876 | |
e7d1c40c | 10877 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10878 | loc += 4; |
00f412ee | 10879 | size = 16; |
176a0d42 | 10880 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10881 | { |
10882 | size += 4; | |
e7d1c40c | 10883 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10884 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10885 | loc += 4; |
e7d1c40c | 10886 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10887 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10888 | } |
10889 | else | |
e7d1c40c | 10890 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10891 | |
10892 | if (PPC_HA (r2off) != 0) | |
10893 | { | |
10894 | size += 4; | |
00f412ee | 10895 | loc += 4; |
e7d1c40c AM |
10896 | bfd_put_32 (htab->params->stub_bfd, |
10897 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
00f412ee AM |
10898 | } |
10899 | if (PPC_LO (r2off) != 0) | |
10900 | { | |
10901 | size += 4; | |
ac2df442 | 10902 | loc += 4; |
e7d1c40c AM |
10903 | bfd_put_32 (htab->params->stub_bfd, |
10904 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
ac2df442 | 10905 | } |
ad8e1ba5 AM |
10906 | } |
10907 | loc += 4; | |
e7d1c40c | 10908 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
ad8e1ba5 | 10909 | loc += 4; |
e7d1c40c | 10910 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
721956f4 | 10911 | break; |
5d1634d7 | 10912 | |
721956f4 | 10913 | case ppc_stub_plt_call: |
794e51c0 | 10914 | case ppc_stub_plt_call_r2save: |
e054468f | 10915 | if (stub_entry->h != NULL |
b31867b6 AM |
10916 | && stub_entry->h->is_func_descriptor |
10917 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10918 | { |
b31867b6 AM |
10919 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10920 | ||
10921 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 10922 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
b31867b6 AM |
10923 | if (fh->elf.root.type == bfd_link_hash_undefined) |
10924 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10925 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10926 | fh->was_undefined = 0; | |
c862ae31 AM |
10927 | } |
10928 | ||
721956f4 | 10929 | /* Now build the stub. */ |
e054468f | 10930 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10931 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10932 | abort (); |
10933 | ||
33e44f2e | 10934 | plt = htab->elf.splt; |
25f23106 AM |
10935 | if (!htab->elf.dynamic_sections_created |
10936 | || stub_entry->h == NULL | |
10937 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10938 | plt = htab->elf.iplt; |
e054468f AM |
10939 | |
10940 | dest += plt->output_offset + plt->output_section->vma; | |
10941 | ||
10942 | if (stub_entry->h == NULL | |
10943 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
10944 | { | |
10945 | Elf_Internal_Rela rela; | |
10946 | bfd_byte *rl; | |
10947 | ||
10948 | rela.r_offset = dest; | |
ee67d69a AM |
10949 | if (htab->opd_abi) |
10950 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
10951 | else | |
10952 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
10953 | rela.r_addend = (stub_entry->target_value |
10954 | + stub_entry->target_section->output_offset | |
10955 | + stub_entry->target_section->output_section->vma); | |
10956 | ||
33e44f2e AM |
10957 | rl = (htab->elf.irelplt->contents |
10958 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
10959 | * sizeof (Elf64_External_Rela))); |
10960 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
10961 | stub_entry->plt_ent->plt.offset |= 1; |
10962 | } | |
176a0d42 AM |
10963 | |
10964 | off = (dest | |
e054468f | 10965 | - elf_gp (plt->output_section->owner) |
6f20ed8a | 10966 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 10967 | |
ad8e1ba5 | 10968 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10969 | { |
25f53a85 | 10970 | info->callbacks->einfo |
bc30df16 | 10971 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
10972 | stub_entry->h != NULL |
10973 | ? stub_entry->h->elf.root.root.string | |
10974 | : "<local sym>"); | |
721956f4 | 10975 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10976 | htab->stub_error = TRUE; |
10977 | return FALSE; | |
721956f4 AM |
10978 | } |
10979 | ||
e7d1c40c | 10980 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
10981 | { |
10982 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10983 | ||
6f20ed8a AM |
10984 | stub_entry->group->stub_sec->size += pad; |
10985 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
794e51c0 AM |
10986 | loc += pad; |
10987 | } | |
10988 | ||
176a0d42 AM |
10989 | r = NULL; |
10990 | if (info->emitrelocations) | |
10991 | { | |
6f20ed8a | 10992 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
10993 | ((PPC_HA (off) != 0) |
10994 | + (htab->opd_abi | |
e7d1c40c | 10995 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
10996 | && PPC_HA (off + 16) == PPC_HA (off)) |
10997 | : 1))); | |
176a0d42 AM |
10998 | if (r == NULL) |
10999 | return FALSE; | |
6f20ed8a | 11000 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11001 | if (bfd_big_endian (info->output_bfd)) |
11002 | r[0].r_offset += 2; | |
176a0d42 AM |
11003 | r[0].r_addend = dest; |
11004 | } | |
a7f2871e AM |
11005 | if (stub_entry->h != NULL |
11006 | && (stub_entry->h == htab->tls_get_addr_fd | |
11007 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 11008 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 | 11009 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11010 | else |
794e51c0 | 11011 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11012 | size = p - loc; |
11013 | break; | |
11014 | ||
a4b6fadd AM |
11015 | case ppc_stub_save_res: |
11016 | return TRUE; | |
11017 | ||
721956f4 AM |
11018 | default: |
11019 | BFD_FAIL (); | |
b34976b6 | 11020 | return FALSE; |
721956f4 AM |
11021 | } |
11022 | ||
6f20ed8a | 11023 | stub_entry->group->stub_sec->size += size; |
97b639ba | 11024 | |
e7d1c40c | 11025 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11026 | { |
11027 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11028 | size_t len1, len2; |
11029 | char *name; | |
11030 | const char *const stub_str[] = { "long_branch", | |
11031 | "long_branch_r2off", | |
11032 | "plt_branch", | |
11033 | "plt_branch_r2off", | |
794e51c0 | 11034 | "plt_call", |
ee75fd95 AM |
11035 | "plt_call" }; |
11036 | ||
11037 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11038 | len2 = strlen (stub_entry->root.string); | |
11039 | name = bfd_malloc (len1 + len2 + 2); | |
11040 | if (name == NULL) | |
11041 | return FALSE; | |
11042 | memcpy (name, stub_entry->root.string, 9); | |
11043 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11044 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11045 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11046 | if (h == NULL) |
11047 | return FALSE; | |
11048 | if (h->root.type == bfd_link_hash_new) | |
11049 | { | |
11050 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11051 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11052 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11053 | h->ref_regular = 1; |
11054 | h->def_regular = 1; | |
11055 | h->ref_regular_nonweak = 1; | |
11056 | h->forced_local = 1; | |
11057 | h->non_elf = 0; | |
2ec55de3 | 11058 | h->root.linker_def = 1; |
97b639ba AM |
11059 | } |
11060 | } | |
11061 | ||
b34976b6 | 11062 | return TRUE; |
721956f4 AM |
11063 | } |
11064 | ||
11065 | /* As above, but don't actually build the stub. Just bump offset so | |
11066 | we know stub section sizes, and select plt_branch stubs where | |
11067 | long_branch stubs won't do. */ | |
11068 | ||
b34976b6 | 11069 | static bfd_boolean |
4ce794b7 | 11070 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11071 | { |
11072 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11073 | struct bfd_link_info *info; |
721956f4 AM |
11074 | struct ppc_link_hash_table *htab; |
11075 | bfd_vma off; | |
11076 | int size; | |
11077 | ||
11078 | /* Massage our args to the form they really have. */ | |
11079 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11080 | info = in_arg; |
11081 | ||
11082 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11083 | if (htab == NULL) |
11084 | return FALSE; | |
721956f4 | 11085 | |
a4b6fadd AM |
11086 | if (stub_entry->h != NULL |
11087 | && stub_entry->h->save_res | |
11088 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11089 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11090 | { | |
11091 | /* Don't make stubs to out-of-line register save/restore | |
11092 | functions. Instead, emit copies of the functions. */ | |
11093 | stub_entry->group->needs_save_res = 1; | |
11094 | stub_entry->stub_type = ppc_stub_save_res; | |
11095 | return TRUE; | |
11096 | } | |
11097 | ||
794e51c0 AM |
11098 | if (stub_entry->stub_type == ppc_stub_plt_call |
11099 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 11100 | { |
e054468f AM |
11101 | asection *plt; |
11102 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 11103 | if (off >= (bfd_vma) -2) |
411e1bfb | 11104 | abort (); |
33e44f2e | 11105 | plt = htab->elf.splt; |
25f23106 AM |
11106 | if (!htab->elf.dynamic_sections_created |
11107 | || stub_entry->h == NULL | |
11108 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 11109 | plt = htab->elf.iplt; |
e054468f AM |
11110 | off += (plt->output_offset |
11111 | + plt->output_section->vma | |
11112 | - elf_gp (plt->output_section->owner) | |
6f20ed8a | 11113 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11114 | |
794e51c0 | 11115 | size = plt_stub_size (htab, stub_entry, off); |
e7d1c40c | 11116 | if (htab->params->plt_stub_align) |
794e51c0 | 11117 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11118 | if (info->emitrelocations) |
11119 | { | |
6f20ed8a | 11120 | stub_entry->group->stub_sec->reloc_count |
b9e5796b AM |
11121 | += ((PPC_HA (off) != 0) |
11122 | + (htab->opd_abi | |
e7d1c40c | 11123 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11124 | && PPC_HA (off + 16) == PPC_HA (off)) |
11125 | : 1)); | |
6f20ed8a | 11126 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
176a0d42 | 11127 | } |
721956f4 AM |
11128 | } |
11129 | else | |
11130 | { | |
ad8e1ba5 AM |
11131 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11132 | variants. */ | |
ac2df442 | 11133 | bfd_vma r2off = 0; |
6911b7dc | 11134 | bfd_vma local_off = 0; |
ac2df442 | 11135 | |
721956f4 AM |
11136 | off = (stub_entry->target_value |
11137 | + stub_entry->target_section->output_offset | |
11138 | + stub_entry->target_section->output_section->vma); | |
6f20ed8a AM |
11139 | off -= (stub_entry->group->stub_sec->size |
11140 | + stub_entry->group->stub_sec->output_offset | |
11141 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11142 | |
ad8e1ba5 AM |
11143 | /* Reset the stub type from the plt variant in case we now |
11144 | can reach with a shorter stub. */ | |
11145 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11146 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11147 | ||
11148 | size = 4; | |
11149 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11150 | { | |
25f53a85 | 11151 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11152 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11153 | { |
11154 | htab->stub_error = TRUE; | |
11155 | return FALSE; | |
11156 | } | |
a7c49797 | 11157 | size = 8; |
ac2df442 | 11158 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11159 | size += 4; |
11160 | if (PPC_LO (r2off) != 0) | |
11161 | size += 4; | |
ac2df442 | 11162 | off -= size - 4; |
ad8e1ba5 AM |
11163 | } |
11164 | ||
6911b7dc AM |
11165 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11166 | ||
b9e5796b AM |
11167 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
11168 | Do the same for -R objects without function descriptors. */ | |
11169 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11170 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
a7c49797 AM |
11171 | && r2off == 0 |
11172 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
721956f4 AM |
11173 | { |
11174 | struct ppc_branch_hash_entry *br_entry; | |
11175 | ||
11176 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11177 | stub_entry->root.string + 9, | |
b34976b6 | 11178 | TRUE, FALSE); |
721956f4 AM |
11179 | if (br_entry == NULL) |
11180 | { | |
8de848d8 | 11181 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 11182 | stub_entry->root.string); |
b34976b6 AM |
11183 | htab->stub_error = TRUE; |
11184 | return FALSE; | |
721956f4 AM |
11185 | } |
11186 | ||
11187 | if (br_entry->iter != htab->stub_iteration) | |
11188 | { | |
11189 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11190 | br_entry->offset = htab->brlt->size; |
11191 | htab->brlt->size += 8; | |
63bc6f6c | 11192 | |
ee75fd95 | 11193 | if (htab->relbrlt != NULL) |
eea6121a | 11194 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11195 | else if (info->emitrelocations) |
11196 | { | |
11197 | htab->brlt->reloc_count += 1; | |
11198 | htab->brlt->flags |= SEC_RELOC; | |
11199 | } | |
721956f4 | 11200 | } |
ad8e1ba5 AM |
11201 | |
11202 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11203 | off = (br_entry->offset |
11204 | + htab->brlt->output_offset | |
11205 | + htab->brlt->output_section->vma | |
11206 | - elf_gp (htab->brlt->output_section->owner) | |
6f20ed8a | 11207 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
ac2df442 | 11208 | |
176a0d42 AM |
11209 | if (info->emitrelocations) |
11210 | { | |
6f20ed8a AM |
11211 | stub_entry->group->stub_sec->reloc_count |
11212 | += 1 + (PPC_HA (off) != 0); | |
11213 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
176a0d42 AM |
11214 | } |
11215 | ||
00f412ee | 11216 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11217 | { |
11218 | size = 12; | |
176a0d42 | 11219 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11220 | size = 16; |
11221 | } | |
11222 | else | |
11223 | { | |
00f412ee | 11224 | size = 16; |
176a0d42 | 11225 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11226 | size += 4; |
11227 | ||
11228 | if (PPC_HA (r2off) != 0) | |
11229 | size += 4; | |
00f412ee AM |
11230 | if (PPC_LO (r2off) != 0) |
11231 | size += 4; | |
ac2df442 | 11232 | } |
721956f4 | 11233 | } |
84f5d08e AM |
11234 | else if (info->emitrelocations) |
11235 | { | |
6f20ed8a AM |
11236 | stub_entry->group->stub_sec->reloc_count += 1; |
11237 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
84f5d08e | 11238 | } |
721956f4 AM |
11239 | } |
11240 | ||
6f20ed8a | 11241 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11242 | return TRUE; |
721956f4 AM |
11243 | } |
11244 | ||
11245 | /* Set up various things so that we can make a list of input sections | |
11246 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11247 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11248 | |
11249 | int | |
e7d1c40c | 11250 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11251 | { |
6f20ed8a | 11252 | unsigned int id; |
721956f4 AM |
11253 | bfd_size_type amt; |
11254 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11255 | ||
4dfe6ac6 NC |
11256 | if (htab == NULL) |
11257 | return -1; | |
4c52953f | 11258 | |
6f20ed8a AM |
11259 | htab->sec_info_arr_size = bfd_get_next_section_id (); |
11260 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); | |
11261 | htab->sec_info = bfd_zmalloc (amt); | |
11262 | if (htab->sec_info == NULL) | |
721956f4 AM |
11263 | return -1; |
11264 | ||
3d6f9012 AM |
11265 | /* Set toc_off for com, und, abs and ind sections. */ |
11266 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11267 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11268 | |
721956f4 AM |
11269 | return 1; |
11270 | } | |
11271 | ||
927be08e AM |
11272 | /* Set up for first pass at multitoc partitioning. */ |
11273 | ||
11274 | void | |
11275 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11276 | { | |
11277 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11278 | ||
1c865ab2 | 11279 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11280 | htab->toc_bfd = NULL; |
11281 | htab->toc_first_sec = NULL; | |
11282 | } | |
11283 | ||
e717da7e AM |
11284 | /* The linker repeatedly calls this function for each TOC input section |
11285 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11286 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11287 | |
927be08e | 11288 | bfd_boolean |
4ce794b7 | 11289 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11290 | { |
11291 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11292 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11293 | |
4dfe6ac6 NC |
11294 | if (htab == NULL) |
11295 | return FALSE; | |
11296 | ||
927be08e | 11297 | if (!htab->second_toc_pass) |
4c52953f | 11298 | { |
927be08e | 11299 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11300 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11301 | ||
11302 | if (new_bfd) | |
bf102f86 AM |
11303 | { |
11304 | htab->toc_bfd = isec->owner; | |
11305 | htab->toc_first_sec = isec; | |
11306 | } | |
927be08e | 11307 | |
bf102f86 AM |
11308 | addr = isec->output_offset + isec->output_section->vma; |
11309 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11310 | limit = 0x80008000; |
11311 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11312 | limit = 0x10000; | |
11313 | if (off + isec->size > limit) | |
bf102f86 AM |
11314 | { |
11315 | addr = (htab->toc_first_sec->output_offset | |
11316 | + htab->toc_first_sec->output_section->vma); | |
11317 | htab->toc_curr = addr; | |
a27e685f | 11318 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11319 | } |
99877b66 | 11320 | |
927be08e AM |
11321 | /* toc_curr is the base address of this toc group. Set elf_gp |
11322 | for the input section to be the offset relative to the | |
11323 | output toc base plus 0x8000. Making the input elf_gp an | |
11324 | offset allows us to move the toc as a whole without | |
11325 | recalculating input elf_gp. */ | |
11326 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
11327 | off += TOC_BASE_OFF; | |
11328 | ||
11329 | /* Die if someone uses a linker script that doesn't keep input | |
11330 | file .toc and .got together. */ | |
a4fd3de5 AM |
11331 | if (new_bfd |
11332 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11333 | && elf_gp (isec->owner) != off) |
11334 | return FALSE; | |
11335 | ||
11336 | elf_gp (isec->owner) = off; | |
11337 | return TRUE; | |
4c52953f | 11338 | } |
927be08e AM |
11339 | |
11340 | /* During the second pass toc_first_sec points to the start of | |
11341 | a toc group, and toc_curr is used to track the old elf_gp. | |
11342 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11343 | if (htab->toc_bfd == isec->owner) | |
11344 | return TRUE; | |
11345 | htab->toc_bfd = isec->owner; | |
11346 | ||
11347 | if (htab->toc_first_sec == NULL | |
11348 | || htab->toc_curr != elf_gp (isec->owner)) | |
11349 | { | |
11350 | htab->toc_curr = elf_gp (isec->owner); | |
11351 | htab->toc_first_sec = isec; | |
11352 | } | |
11353 | addr = (htab->toc_first_sec->output_offset | |
11354 | + htab->toc_first_sec->output_section->vma); | |
11355 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
11356 | elf_gp (isec->owner) = off; | |
11357 | ||
11358 | return TRUE; | |
ad8e1ba5 AM |
11359 | } |
11360 | ||
927be08e AM |
11361 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11362 | symbol H. */ | |
11363 | ||
11364 | static bfd_boolean | |
11365 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11366 | { | |
11367 | if (h->root.type == bfd_link_hash_indirect) | |
11368 | return TRUE; | |
11369 | ||
927be08e AM |
11370 | merge_got_entries (&h->got.glist); |
11371 | ||
11372 | return TRUE; | |
11373 | } | |
11374 | ||
11375 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11376 | symbol H. */ | |
11377 | ||
11378 | static bfd_boolean | |
11379 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11380 | { | |
11381 | struct got_entry *gent; | |
11382 | ||
11383 | if (h->root.type == bfd_link_hash_indirect) | |
11384 | return TRUE; | |
11385 | ||
927be08e AM |
11386 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11387 | if (!gent->is_indirect) | |
11388 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11389 | return TRUE; | |
11390 | } | |
11391 | ||
11392 | /* Called on the first multitoc pass after the last call to | |
11393 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11394 | entries. */ | |
11395 | ||
11396 | bfd_boolean | |
11397 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11398 | { |
11399 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11400 | struct bfd *ibfd, *ibfd2; |
11401 | bfd_boolean done_something; | |
11402 | ||
11403 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11404 | |
7865406b AM |
11405 | if (!htab->do_multi_toc) |
11406 | return FALSE; | |
11407 | ||
d0fae19d | 11408 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11409 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11410 | ||
11411 | /* And tlsld_got. */ | |
c72f2fb2 | 11412 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11413 | { |
11414 | struct got_entry *ent, *ent2; | |
11415 | ||
11416 | if (!is_ppc64_elf (ibfd)) | |
11417 | continue; | |
11418 | ||
11419 | ent = ppc64_tlsld_got (ibfd); | |
11420 | if (!ent->is_indirect | |
11421 | && ent->got.offset != (bfd_vma) -1) | |
11422 | { | |
c72f2fb2 | 11423 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11424 | { |
11425 | if (!is_ppc64_elf (ibfd2)) | |
11426 | continue; | |
11427 | ||
11428 | ent2 = ppc64_tlsld_got (ibfd2); | |
11429 | if (!ent2->is_indirect | |
11430 | && ent2->got.offset != (bfd_vma) -1 | |
11431 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11432 | { | |
11433 | ent2->is_indirect = TRUE; | |
11434 | ent2->got.ent = ent; | |
11435 | } | |
11436 | } | |
11437 | } | |
11438 | } | |
11439 | ||
11440 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11441 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11442 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11443 | htab->got_reli_size = 0; |
11444 | ||
c72f2fb2 | 11445 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11446 | { |
11447 | asection *got, *relgot; | |
11448 | ||
11449 | if (!is_ppc64_elf (ibfd)) | |
11450 | continue; | |
11451 | ||
11452 | got = ppc64_elf_tdata (ibfd)->got; | |
11453 | if (got != NULL) | |
11454 | { | |
11455 | got->rawsize = got->size; | |
11456 | got->size = 0; | |
11457 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11458 | relgot->rawsize = relgot->size; | |
11459 | relgot->size = 0; | |
11460 | } | |
11461 | } | |
11462 | ||
11463 | /* Now reallocate the got, local syms first. We don't need to | |
11464 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11465 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11466 | { |
11467 | struct got_entry **lgot_ents; | |
11468 | struct got_entry **end_lgot_ents; | |
11469 | struct plt_entry **local_plt; | |
11470 | struct plt_entry **end_local_plt; | |
f961d9dd | 11471 | unsigned char *lgot_masks; |
927be08e AM |
11472 | bfd_size_type locsymcount; |
11473 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11474 | asection *s; |
927be08e AM |
11475 | |
11476 | if (!is_ppc64_elf (ibfd)) | |
11477 | continue; | |
11478 | ||
11479 | lgot_ents = elf_local_got_ents (ibfd); | |
11480 | if (!lgot_ents) | |
11481 | continue; | |
11482 | ||
11483 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11484 | locsymcount = symtab_hdr->sh_info; | |
11485 | end_lgot_ents = lgot_ents + locsymcount; | |
11486 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11487 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11488 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11489 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11490 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11491 | { | |
11492 | struct got_entry *ent; | |
11493 | ||
11494 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11495 | { |
19e08130 AM |
11496 | unsigned int ent_size = 8; |
11497 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11498 | ||
d0fae19d AM |
11499 | ent->got.offset = s->size; |
11500 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11501 | { |
19e08130 AM |
11502 | ent_size *= 2; |
11503 | rel_size *= 2; | |
11504 | } | |
11505 | s->size += ent_size; | |
11506 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11507 | { | |
33e44f2e | 11508 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11509 | htab->got_reli_size += rel_size; |
11510 | } | |
0e1862bb | 11511 | else if (bfd_link_pic (info)) |
19e08130 AM |
11512 | { |
11513 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11514 | srel->size += rel_size; | |
d0fae19d AM |
11515 | } |
11516 | } | |
927be08e AM |
11517 | } |
11518 | } | |
11519 | ||
11520 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11521 | ||
c72f2fb2 | 11522 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11523 | { |
11524 | struct got_entry *ent; | |
11525 | ||
11526 | if (!is_ppc64_elf (ibfd)) | |
11527 | continue; | |
11528 | ||
11529 | ent = ppc64_tlsld_got (ibfd); | |
11530 | if (!ent->is_indirect | |
11531 | && ent->got.offset != (bfd_vma) -1) | |
11532 | { | |
11533 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11534 | ent->got.offset = s->size; | |
11535 | s->size += 16; | |
0e1862bb | 11536 | if (bfd_link_pic (info)) |
927be08e AM |
11537 | { |
11538 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11539 | srel->size += sizeof (Elf64_External_Rela); | |
11540 | } | |
11541 | } | |
11542 | } | |
11543 | ||
33e44f2e | 11544 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11545 | if (!done_something) |
c72f2fb2 | 11546 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11547 | { |
11548 | asection *got; | |
11549 | ||
11550 | if (!is_ppc64_elf (ibfd)) | |
11551 | continue; | |
11552 | ||
11553 | got = ppc64_elf_tdata (ibfd)->got; | |
11554 | if (got != NULL) | |
11555 | { | |
11556 | done_something = got->rawsize != got->size; | |
11557 | if (done_something) | |
11558 | break; | |
11559 | } | |
11560 | } | |
11561 | ||
11562 | if (done_something) | |
e7d1c40c | 11563 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11564 | |
11565 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11566 | on input sections. */ | |
11567 | htab->toc_bfd = NULL; | |
11568 | htab->toc_first_sec = NULL; | |
11569 | htab->second_toc_pass = TRUE; | |
11570 | return done_something; | |
11571 | } | |
11572 | ||
11573 | /* Called after second pass of multitoc partitioning. */ | |
11574 | ||
11575 | void | |
11576 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11577 | { | |
11578 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11579 | ||
11580 | /* After the second pass, toc_curr tracks the TOC offset used | |
11581 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11582 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11583 | } |
11584 | ||
9b5ecbd0 AM |
11585 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11586 | calls, then there's no need to use toc adjusting stubs when branching | |
11587 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11588 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11589 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11590 | for a stub was detected. If called from the top level, a return of | |
11591 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11592 | |
11593 | static int | |
4ce794b7 | 11594 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11595 | { |
9b5ecbd0 | 11596 | int ret; |
70cc837d AM |
11597 | |
11598 | /* Mark this section as checked. */ | |
11599 | isec->call_check_done = 1; | |
9b5ecbd0 | 11600 | |
772119ce AM |
11601 | /* We know none of our code bearing sections will need toc stubs. */ |
11602 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11603 | return 0; | |
11604 | ||
eea6121a | 11605 | if (isec->size == 0) |
082c50f8 AM |
11606 | return 0; |
11607 | ||
4c52953f AM |
11608 | if (isec->output_section == NULL) |
11609 | return 0; | |
11610 | ||
4c52953f | 11611 | ret = 0; |
70cc837d | 11612 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11613 | { |
70cc837d AM |
11614 | Elf_Internal_Rela *relstart, *rel; |
11615 | Elf_Internal_Sym *local_syms; | |
11616 | struct ppc_link_hash_table *htab; | |
2917689a | 11617 | |
70cc837d AM |
11618 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11619 | info->keep_memory); | |
11620 | if (relstart == NULL) | |
11621 | return -1; | |
90aecf7a | 11622 | |
70cc837d AM |
11623 | /* Look for branches to outside of this section. */ |
11624 | local_syms = NULL; | |
11625 | htab = ppc_hash_table (info); | |
11626 | if (htab == NULL) | |
11627 | return -1; | |
4c52953f | 11628 | |
70cc837d | 11629 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11630 | { |
70cc837d AM |
11631 | enum elf_ppc64_reloc_type r_type; |
11632 | unsigned long r_symndx; | |
11633 | struct elf_link_hash_entry *h; | |
11634 | struct ppc_link_hash_entry *eh; | |
11635 | Elf_Internal_Sym *sym; | |
11636 | asection *sym_sec; | |
11637 | struct _opd_sec_data *opd; | |
11638 | bfd_vma sym_value; | |
11639 | bfd_vma dest; | |
11640 | ||
11641 | r_type = ELF64_R_TYPE (rel->r_info); | |
11642 | if (r_type != R_PPC64_REL24 | |
11643 | && r_type != R_PPC64_REL14 | |
11644 | && r_type != R_PPC64_REL14_BRTAKEN | |
11645 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11646 | continue; | |
4c52953f | 11647 | |
70cc837d AM |
11648 | r_symndx = ELF64_R_SYM (rel->r_info); |
11649 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11650 | isec->owner)) | |
4c52953f | 11651 | { |
70cc837d AM |
11652 | ret = -1; |
11653 | break; | |
11654 | } | |
4c52953f | 11655 | |
70cc837d AM |
11656 | /* Calls to dynamic lib functions go through a plt call stub |
11657 | that uses r2. */ | |
11658 | eh = (struct ppc_link_hash_entry *) h; | |
11659 | if (eh != NULL | |
11660 | && (eh->elf.plt.plist != NULL | |
11661 | || (eh->oh != NULL | |
11662 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11663 | { | |
11664 | ret = 1; | |
11665 | break; | |
4c52953f AM |
11666 | } |
11667 | ||
70cc837d AM |
11668 | if (sym_sec == NULL) |
11669 | /* Ignore other undefined symbols. */ | |
4c52953f | 11670 | continue; |
4c52953f | 11671 | |
70cc837d AM |
11672 | /* Assume branches to other sections not included in the |
11673 | link need stubs too, to cover -R and absolute syms. */ | |
11674 | if (sym_sec->output_section == NULL) | |
11675 | { | |
11676 | ret = 1; | |
11677 | break; | |
11678 | } | |
4c52953f | 11679 | |
70cc837d AM |
11680 | if (h == NULL) |
11681 | sym_value = sym->st_value; | |
11682 | else | |
11683 | { | |
11684 | if (h->root.type != bfd_link_hash_defined | |
11685 | && h->root.type != bfd_link_hash_defweak) | |
11686 | abort (); | |
11687 | sym_value = h->root.u.def.value; | |
11688 | } | |
11689 | sym_value += rel->r_addend; | |
4c52953f | 11690 | |
70cc837d AM |
11691 | /* If this branch reloc uses an opd sym, find the code section. */ |
11692 | opd = get_opd_info (sym_sec); | |
11693 | if (opd != NULL) | |
11694 | { | |
11695 | if (h == NULL && opd->adjust != NULL) | |
11696 | { | |
11697 | long adjust; | |
4c52953f | 11698 | |
92a9c616 | 11699 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
11700 | if (adjust == -1) |
11701 | /* Assume deleted functions won't ever be called. */ | |
11702 | continue; | |
11703 | sym_value += adjust; | |
11704 | } | |
4c52953f | 11705 | |
aef36ac1 AM |
11706 | dest = opd_entry_value (sym_sec, sym_value, |
11707 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11708 | if (dest == (bfd_vma) -1) |
11709 | continue; | |
11710 | } | |
11711 | else | |
11712 | dest = (sym_value | |
11713 | + sym_sec->output_offset | |
11714 | + sym_sec->output_section->vma); | |
4c52953f | 11715 | |
70cc837d AM |
11716 | /* Ignore branch to self. */ |
11717 | if (sym_sec == isec) | |
11718 | continue; | |
4c52953f | 11719 | |
70cc837d AM |
11720 | /* If the called function uses the toc, we need a stub. */ |
11721 | if (sym_sec->has_toc_reloc | |
11722 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11723 | { |
70cc837d | 11724 | ret = 1; |
4c52953f AM |
11725 | break; |
11726 | } | |
70cc837d AM |
11727 | |
11728 | /* Assume any branch that needs a long branch stub might in fact | |
11729 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11730 | else if (dest - (isec->output_offset | |
11731 | + isec->output_section->vma | |
6911b7dc AM |
11732 | + rel->r_offset) + (1 << 25) |
11733 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11734 | ? h->other | |
11735 | : sym->st_other)) | |
4c52953f | 11736 | { |
70cc837d AM |
11737 | ret = 1; |
11738 | break; | |
11739 | } | |
11740 | ||
11741 | /* If calling back to a section in the process of being | |
11742 | tested, we can't say for sure that no toc adjusting stubs | |
11743 | are needed, so don't return zero. */ | |
11744 | else if (sym_sec->call_check_in_progress) | |
11745 | ret = 2; | |
11746 | ||
11747 | /* Branches to another section that itself doesn't have any TOC | |
11748 | references are OK. Recursively call ourselves to check. */ | |
11749 | else if (!sym_sec->call_check_done) | |
11750 | { | |
11751 | int recur; | |
11752 | ||
11753 | /* Mark current section as indeterminate, so that other | |
11754 | sections that call back to current won't be marked as | |
11755 | known. */ | |
11756 | isec->call_check_in_progress = 1; | |
11757 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11758 | isec->call_check_in_progress = 0; | |
11759 | ||
4c52953f AM |
11760 | if (recur != 0) |
11761 | { | |
70cc837d AM |
11762 | ret = recur; |
11763 | if (recur != 2) | |
11764 | break; | |
4c52953f AM |
11765 | } |
11766 | } | |
4c52953f | 11767 | } |
70cc837d AM |
11768 | |
11769 | if (local_syms != NULL | |
11770 | && (elf_symtab_hdr (isec->owner).contents | |
11771 | != (unsigned char *) local_syms)) | |
11772 | free (local_syms); | |
11773 | if (elf_section_data (isec)->relocs != relstart) | |
11774 | free (relstart); | |
9b5ecbd0 AM |
11775 | } |
11776 | ||
70cc837d AM |
11777 | if ((ret & 1) == 0 |
11778 | && isec->map_head.s != NULL | |
11779 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11780 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11781 | { | |
11782 | if (isec->map_head.s->has_toc_reloc | |
11783 | || isec->map_head.s->makes_toc_func_call) | |
11784 | ret = 1; | |
11785 | else if (!isec->map_head.s->call_check_done) | |
11786 | { | |
11787 | int recur; | |
11788 | isec->call_check_in_progress = 1; | |
11789 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11790 | isec->call_check_in_progress = 0; | |
11791 | if (recur != 0) | |
11792 | ret = recur; | |
11793 | } | |
11794 | } | |
11795 | ||
11796 | if (ret == 1) | |
11797 | isec->makes_toc_func_call = 1; | |
4c52953f | 11798 | |
9b5ecbd0 AM |
11799 | return ret; |
11800 | } | |
11801 | ||
721956f4 AM |
11802 | /* The linker repeatedly calls this function for each input section, |
11803 | in the order that input sections are linked into output sections. | |
11804 | Build lists of input sections to determine groupings between which | |
11805 | we may insert linker stubs. */ | |
11806 | ||
9b5ecbd0 | 11807 | bfd_boolean |
4ce794b7 | 11808 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11809 | { |
11810 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11811 | ||
4dfe6ac6 NC |
11812 | if (htab == NULL) |
11813 | return FALSE; | |
11814 | ||
734b6cf9 | 11815 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 11816 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 11817 | { |
3d6f9012 AM |
11818 | /* This happens to make the list in reverse order, |
11819 | which is what we want. */ | |
6f20ed8a AM |
11820 | htab->sec_info[isec->id].u.list |
11821 | = htab->sec_info[isec->output_section->id].u.list; | |
11822 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 11823 | } |
ad8e1ba5 | 11824 | |
4c52953f | 11825 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11826 | { |
8b974ba3 AM |
11827 | /* Analyse sections that aren't already flagged as needing a |
11828 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11829 | .fixup contains branches, but only back to the function that | |
11830 | hit an exception. */ | |
11831 | if (!(isec->has_toc_reloc | |
11832 | || (isec->flags & SEC_CODE) == 0 | |
11833 | || strcmp (isec->name, ".fixup") == 0 | |
11834 | || isec->call_check_done)) | |
11835 | { | |
11836 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11837 | return FALSE; |
8b974ba3 AM |
11838 | } |
11839 | /* Make all sections use the TOC assigned for this object file. | |
11840 | This will be wrong for pasted sections; We fix that in | |
11841 | check_pasted_section(). */ | |
11842 | if (elf_gp (isec->owner) != 0) | |
11843 | htab->toc_curr = elf_gp (isec->owner); | |
11844 | } | |
11845 | ||
6f20ed8a | 11846 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11847 | return TRUE; |
721956f4 AM |
11848 | } |
11849 | ||
70cc837d AM |
11850 | /* Check that all .init and .fini sections use the same toc, if they |
11851 | have toc relocs. */ | |
11852 | ||
11853 | static bfd_boolean | |
11854 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11855 | { | |
11856 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11857 | ||
11858 | if (o != NULL) | |
11859 | { | |
11860 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11861 | bfd_vma toc_off = 0; | |
11862 | asection *i; | |
11863 | ||
11864 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11865 | if (i->has_toc_reloc) | |
11866 | { | |
11867 | if (toc_off == 0) | |
6f20ed8a AM |
11868 | toc_off = htab->sec_info[i->id].toc_off; |
11869 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
11870 | return FALSE; |
11871 | } | |
6683a28d AM |
11872 | |
11873 | if (toc_off == 0) | |
11874 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11875 | if (i->makes_toc_func_call) | |
11876 | { | |
6f20ed8a | 11877 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
11878 | break; |
11879 | } | |
11880 | ||
70cc837d AM |
11881 | /* Make sure the whole pasted function uses the same toc offset. */ |
11882 | if (toc_off != 0) | |
11883 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 11884 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
11885 | } |
11886 | return TRUE; | |
11887 | } | |
11888 | ||
11889 | bfd_boolean | |
11890 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11891 | { | |
11892 | return (check_pasted_section (info, ".init") | |
11893 | & check_pasted_section (info, ".fini")); | |
11894 | } | |
11895 | ||
721956f4 AM |
11896 | /* See whether we can group stub sections together. Grouping stub |
11897 | sections may result in fewer stubs. More importantly, we need to | |
11898 | put all .init* and .fini* stubs at the beginning of the .init or | |
11899 | .fini output sections respectively, because glibc splits the | |
11900 | _init and _fini functions into multiple parts. Putting a stub in | |
11901 | the middle of a function is not a good idea. */ | |
11902 | ||
6f20ed8a AM |
11903 | static bfd_boolean |
11904 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
11905 | bfd_size_type stub_group_size, |
11906 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11907 | { |
6f20ed8a AM |
11908 | struct ppc_link_hash_table *htab; |
11909 | asection *osec; | |
7c8fe5c4 AM |
11910 | bfd_size_type stub14_group_size; |
11911 | bfd_boolean suppress_size_errors; | |
11912 | ||
6f20ed8a AM |
11913 | htab = ppc_hash_table (info); |
11914 | if (htab == NULL) | |
11915 | return FALSE; | |
11916 | ||
7c8fe5c4 | 11917 | suppress_size_errors = FALSE; |
0cfb0717 | 11918 | stub14_group_size = stub_group_size >> 10; |
7c8fe5c4 AM |
11919 | if (stub_group_size == 1) |
11920 | { | |
11921 | /* Default values. */ | |
11922 | if (stubs_always_before_branch) | |
11923 | { | |
11924 | stub_group_size = 0x1e00000; | |
11925 | stub14_group_size = 0x7800; | |
11926 | } | |
11927 | else | |
11928 | { | |
11929 | stub_group_size = 0x1c00000; | |
11930 | stub14_group_size = 0x7000; | |
11931 | } | |
11932 | suppress_size_errors = TRUE; | |
11933 | } | |
11934 | ||
6f20ed8a | 11935 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 11936 | { |
6f20ed8a AM |
11937 | asection *tail; |
11938 | ||
11939 | if (osec->id >= htab->sec_info_arr_size) | |
11940 | continue; | |
11941 | ||
11942 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 11943 | while (tail != NULL) |
721956f4 | 11944 | { |
734b6cf9 AM |
11945 | asection *curr; |
11946 | asection *prev; | |
11947 | bfd_size_type total; | |
11948 | bfd_boolean big_sec; | |
11949 | bfd_vma curr_toc; | |
6f20ed8a | 11950 | struct map_stub *group; |
734b6cf9 AM |
11951 | |
11952 | curr = tail; | |
eea6121a | 11953 | total = tail->size; |
6bee8834 AM |
11954 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
11955 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
11956 | ? stub14_group_size : stub_group_size); |
11957 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
11958 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
11959 | tail->owner, tail); | |
6f20ed8a | 11960 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 11961 | |
6f20ed8a | 11962 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 11963 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
11964 | < (ppc64_elf_section_data (prev) != NULL |
11965 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11966 | ? stub14_group_size : stub_group_size)) |
6f20ed8a | 11967 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11968 | curr = prev; |
11969 | ||
11970 | /* OK, the size from the start of CURR to the end is less | |
11971 | than stub_group_size and thus can be handled by one stub | |
11972 | section. (or the tail section is itself larger than | |
11973 | stub_group_size, in which case we may be toast.) We | |
11974 | should really be keeping track of the total size of stubs | |
11975 | added here, as stubs contribute to the final output | |
11976 | section size. That's a little tricky, and this way will | |
11977 | only break if stubs added make the total size more than | |
11978 | 2^25, ie. for the default stub_group_size, if stubs total | |
11979 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
11980 | group = bfd_alloc (curr->owner, sizeof (*group)); |
11981 | if (group == NULL) | |
11982 | return FALSE; | |
11983 | group->link_sec = curr; | |
11984 | group->stub_sec = NULL; | |
a4b6fadd AM |
11985 | group->needs_save_res = 0; |
11986 | group->next = htab->group; | |
11987 | htab->group = group; | |
734b6cf9 | 11988 | do |
721956f4 | 11989 | { |
6f20ed8a | 11990 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 11991 | /* Set up this stub group. */ |
6f20ed8a | 11992 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 11993 | } |
734b6cf9 AM |
11994 | while (tail != curr && (tail = prev) != NULL); |
11995 | ||
11996 | /* But wait, there's more! Input sections up to stub_group_size | |
11997 | bytes before the stub section can be handled by it too. | |
11998 | Don't do this if we have a really large section after the | |
11999 | stubs, as adding more stubs increases the chance that | |
12000 | branches may not reach into the stub section. */ | |
12001 | if (!stubs_always_before_branch && !big_sec) | |
12002 | { | |
12003 | total = 0; | |
12004 | while (prev != NULL | |
12005 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12006 | < (ppc64_elf_section_data (prev) != NULL |
12007 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 12008 | ? stub14_group_size : stub_group_size)) |
6f20ed8a | 12009 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12010 | { |
12011 | tail = prev; | |
6f20ed8a AM |
12012 | prev = htab->sec_info[tail->id].u.list; |
12013 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12014 | } |
12015 | } | |
12016 | tail = prev; | |
721956f4 AM |
12017 | } |
12018 | } | |
6f20ed8a | 12019 | return TRUE; |
721956f4 AM |
12020 | } |
12021 | ||
58d180e8 AM |
12022 | static const unsigned char glink_eh_frame_cie[] = |
12023 | { | |
12024 | 0, 0, 0, 16, /* length. */ | |
12025 | 0, 0, 0, 0, /* id. */ | |
12026 | 1, /* CIE version. */ | |
12027 | 'z', 'R', 0, /* Augmentation string. */ | |
12028 | 4, /* Code alignment. */ | |
12029 | 0x78, /* Data alignment. */ | |
12030 | 65, /* RA reg. */ | |
12031 | 1, /* Augmentation size. */ | |
12032 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
da44f4e5 AM |
12033 | DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */ |
12034 | 0, 0, 0, 0 | |
58d180e8 AM |
12035 | }; |
12036 | ||
d969d15f AM |
12037 | /* Stripping output sections is normally done before dynamic section |
12038 | symbols have been allocated. This function is called later, and | |
12039 | handles cases like htab->brlt which is mapped to its own output | |
12040 | section. */ | |
12041 | ||
12042 | static void | |
12043 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12044 | { | |
12045 | if (isec->size == 0 | |
12046 | && isec->output_section->size == 0 | |
53d8967a | 12047 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12048 | && !bfd_section_removed_from_list (info->output_bfd, |
12049 | isec->output_section) | |
12050 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12051 | { | |
12052 | isec->output_section->flags |= SEC_EXCLUDE; | |
12053 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12054 | info->output_bfd->section_count--; | |
12055 | } | |
12056 | } | |
12057 | ||
721956f4 AM |
12058 | /* Determine and set the size of the stub section for a final link. |
12059 | ||
12060 | The basic idea here is to examine all the relocations looking for | |
12061 | PC-relative calls to a target that is unreachable with a "bl" | |
12062 | instruction. */ | |
12063 | ||
b34976b6 | 12064 | bfd_boolean |
e7d1c40c | 12065 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12066 | { |
12067 | bfd_size_type stub_group_size; | |
b34976b6 | 12068 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12069 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12070 | ||
4dfe6ac6 NC |
12071 | if (htab == NULL) |
12072 | return FALSE; | |
12073 | ||
0e1862bb | 12074 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12075 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12076 | if (!htab->opd_abi) |
e7d1c40c AM |
12077 | htab->params->plt_thread_safe = 0; |
12078 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12079 | { |
e2458743 | 12080 | static const char *const thread_starter[] = |
794e51c0 AM |
12081 | { |
12082 | "pthread_create", | |
12083 | /* libstdc++ */ | |
12084 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12085 | /* librt */ | |
12086 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12087 | "mq_notify", "create_timer", | |
12088 | /* libanl */ | |
12089 | "getaddrinfo_a", | |
12090 | /* libgomp */ | |
2300b5a1 | 12091 | "GOMP_parallel", |
794e51c0 | 12092 | "GOMP_parallel_start", |
2300b5a1 | 12093 | "GOMP_parallel_loop_static", |
794e51c0 | 12094 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12095 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12096 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12097 | "GOMP_parallel_loop_guided", |
794e51c0 | 12098 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12099 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12100 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12101 | "GOMP_parallel_sections", |
68ffbac6 | 12102 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12103 | /* libgo */ |
12104 | "__go_go", | |
794e51c0 AM |
12105 | }; |
12106 | unsigned i; | |
12107 | ||
a4b6fadd | 12108 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12109 | { |
12110 | struct elf_link_hash_entry *h; | |
12111 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12112 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12113 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12114 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12115 | break; |
12116 | } | |
12117 | } | |
e7d1c40c AM |
12118 | stubs_always_before_branch = htab->params->group_size < 0; |
12119 | if (htab->params->group_size < 0) | |
12120 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12121 | else |
e7d1c40c | 12122 | stub_group_size = htab->params->group_size; |
721956f4 | 12123 | |
6f20ed8a AM |
12124 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12125 | return FALSE; | |
721956f4 | 12126 | |
721956f4 AM |
12127 | while (1) |
12128 | { | |
12129 | bfd *input_bfd; | |
12130 | unsigned int bfd_indx; | |
a4b6fadd | 12131 | struct map_stub *group; |
721956f4 | 12132 | asection *stub_sec; |
721956f4 AM |
12133 | |
12134 | htab->stub_iteration += 1; | |
721956f4 AM |
12135 | |
12136 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12137 | input_bfd != NULL; | |
c72f2fb2 | 12138 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12139 | { |
12140 | Elf_Internal_Shdr *symtab_hdr; | |
12141 | asection *section; | |
6cdc0ccc | 12142 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12143 | |
0c8d6e5c | 12144 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12145 | continue; |
12146 | ||
721956f4 | 12147 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12148 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12149 | if (symtab_hdr->sh_info == 0) |
12150 | continue; | |
12151 | ||
721956f4 AM |
12152 | /* Walk over each section attached to the input bfd. */ |
12153 | for (section = input_bfd->sections; | |
12154 | section != NULL; | |
12155 | section = section->next) | |
12156 | { | |
721956f4 | 12157 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12158 | |
12159 | /* If there aren't any relocs, then there's nothing more | |
12160 | to do. */ | |
12161 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12162 | || (section->flags & SEC_ALLOC) == 0 |
12163 | || (section->flags & SEC_LOAD) == 0 | |
12164 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12165 | || section->reloc_count == 0) |
12166 | continue; | |
12167 | ||
12168 | /* If this section is a link-once section that will be | |
12169 | discarded, then don't create any stubs. */ | |
12170 | if (section->output_section == NULL | |
927be08e | 12171 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12172 | continue; |
12173 | ||
1e2f5b6e AM |
12174 | /* Get the relocs. */ |
12175 | internal_relocs | |
4ce794b7 | 12176 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12177 | info->keep_memory); |
721956f4 | 12178 | if (internal_relocs == NULL) |
1e2f5b6e | 12179 | goto error_ret_free_local; |
721956f4 AM |
12180 | |
12181 | /* Now examine each relocation. */ | |
12182 | irela = internal_relocs; | |
12183 | irelaend = irela + section->reloc_count; | |
12184 | for (; irela < irelaend; irela++) | |
12185 | { | |
4ce794b7 AM |
12186 | enum elf_ppc64_reloc_type r_type; |
12187 | unsigned int r_indx; | |
721956f4 AM |
12188 | enum ppc_stub_type stub_type; |
12189 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12190 | asection *sym_sec, *code_sec; |
e054468f | 12191 | bfd_vma sym_value, code_value; |
721956f4 | 12192 | bfd_vma destination; |
6911b7dc | 12193 | unsigned long local_off; |
8843416a | 12194 | bfd_boolean ok_dest; |
721956f4 | 12195 | struct ppc_link_hash_entry *hash; |
8387904d | 12196 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12197 | struct elf_link_hash_entry *h; |
12198 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12199 | char *stub_name; |
12200 | const asection *id_sec; | |
74f0fb50 | 12201 | struct _opd_sec_data *opd; |
e054468f | 12202 | struct plt_entry *plt_ent; |
721956f4 AM |
12203 | |
12204 | r_type = ELF64_R_TYPE (irela->r_info); | |
12205 | r_indx = ELF64_R_SYM (irela->r_info); | |
12206 | ||
4ce794b7 | 12207 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12208 | { |
12209 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12210 | goto error_ret_free_internal; |
721956f4 AM |
12211 | } |
12212 | ||
12213 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12214 | if (r_type != R_PPC64_REL24 |
12215 | && r_type != R_PPC64_REL14 | |
12216 | && r_type != R_PPC64_REL14_BRTAKEN | |
12217 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12218 | continue; |
12219 | ||
12220 | /* Now determine the call target, its name, value, | |
12221 | section. */ | |
411e1bfb AM |
12222 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12223 | r_indx, input_bfd)) | |
12224 | goto error_ret_free_internal; | |
12225 | hash = (struct ppc_link_hash_entry *) h; | |
12226 | ||
8843416a | 12227 | ok_dest = FALSE; |
8387904d | 12228 | fdh = NULL; |
7fe2b9a6 | 12229 | sym_value = 0; |
411e1bfb | 12230 | if (hash == NULL) |
721956f4 | 12231 | { |
411e1bfb | 12232 | sym_value = sym->st_value; |
8843416a | 12233 | ok_dest = TRUE; |
721956f4 | 12234 | } |
7fe2b9a6 AM |
12235 | else if (hash->elf.root.type == bfd_link_hash_defined |
12236 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12237 | { | |
12238 | sym_value = hash->elf.root.u.def.value; | |
12239 | if (sym_sec->output_section != NULL) | |
12240 | ok_dest = TRUE; | |
12241 | } | |
12242 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12243 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12244 | { |
99877b66 | 12245 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12246 | use the func descriptor sym instead if it is |
12247 | defined. */ | |
ceb1f1ef | 12248 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 12249 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 12250 | { |
8387904d AM |
12251 | if (fdh->elf.root.type == bfd_link_hash_defined |
12252 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12253 | { | |
12254 | sym_sec = fdh->elf.root.u.def.section; | |
12255 | sym_value = fdh->elf.root.u.def.value; | |
12256 | if (sym_sec->output_section != NULL) | |
12257 | ok_dest = TRUE; | |
12258 | } | |
99877b66 AM |
12259 | else |
12260 | fdh = NULL; | |
8387904d | 12261 | } |
7fe2b9a6 AM |
12262 | } |
12263 | else | |
12264 | { | |
12265 | bfd_set_error (bfd_error_bad_value); | |
12266 | goto error_ret_free_internal; | |
721956f4 AM |
12267 | } |
12268 | ||
8843416a | 12269 | destination = 0; |
6911b7dc | 12270 | local_off = 0; |
8843416a AM |
12271 | if (ok_dest) |
12272 | { | |
12273 | sym_value += irela->r_addend; | |
12274 | destination = (sym_value | |
12275 | + sym_sec->output_offset | |
12276 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12277 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12278 | ? hash->elf.other | |
12279 | : sym->st_other); | |
8843416a AM |
12280 | } |
12281 | ||
8387904d | 12282 | code_sec = sym_sec; |
e054468f | 12283 | code_value = sym_value; |
74f0fb50 AM |
12284 | opd = get_opd_info (sym_sec); |
12285 | if (opd != NULL) | |
8387904d AM |
12286 | { |
12287 | bfd_vma dest; | |
12288 | ||
74f0fb50 | 12289 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12290 | { |
51aecdc5 | 12291 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12292 | if (adjust == -1) |
12293 | continue; | |
e054468f | 12294 | code_value += adjust; |
8387904d AM |
12295 | sym_value += adjust; |
12296 | } | |
12297 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12298 | &code_sec, &code_value, FALSE); |
8387904d AM |
12299 | if (dest != (bfd_vma) -1) |
12300 | { | |
12301 | destination = dest; | |
12302 | if (fdh != NULL) | |
12303 | { | |
12304 | /* Fixup old ABI sym to point at code | |
12305 | entry. */ | |
99877b66 | 12306 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12307 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12308 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12309 | } |
12310 | } | |
12311 | } | |
12312 | ||
721956f4 | 12313 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12314 | plt_ent = NULL; |
721956f4 | 12315 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12316 | &plt_ent, destination, |
12317 | local_off); | |
ad8e1ba5 AM |
12318 | |
12319 | if (stub_type != ppc_stub_plt_call) | |
12320 | { | |
12321 | /* Check whether we need a TOC adjusting stub. | |
12322 | Since the linker pastes together pieces from | |
12323 | different object files when creating the | |
12324 | _init and _fini functions, it may be that a | |
12325 | call to what looks like a local sym is in | |
12326 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12327 | if (code_sec != NULL |
12328 | && code_sec->output_section != NULL | |
6f20ed8a AM |
12329 | && (htab->sec_info[code_sec->id].toc_off |
12330 | != htab->sec_info[section->id].toc_off) | |
4c52953f AM |
12331 | && (code_sec->has_toc_reloc |
12332 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12333 | stub_type = ppc_stub_long_branch_r2off; |
12334 | } | |
12335 | ||
721956f4 AM |
12336 | if (stub_type == ppc_stub_none) |
12337 | continue; | |
12338 | ||
411e1bfb AM |
12339 | /* __tls_get_addr calls might be eliminated. */ |
12340 | if (stub_type != ppc_stub_plt_call | |
12341 | && hash != NULL | |
8387904d AM |
12342 | && (hash == htab->tls_get_addr |
12343 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12344 | && section->has_tls_reloc |
12345 | && irela != internal_relocs) | |
12346 | { | |
12347 | /* Get tls info. */ | |
f961d9dd | 12348 | unsigned char *tls_mask; |
411e1bfb | 12349 | |
3a71aa26 | 12350 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12351 | irela - 1, input_bfd)) |
12352 | goto error_ret_free_internal; | |
e7b938ca | 12353 | if (*tls_mask != 0) |
411e1bfb AM |
12354 | continue; |
12355 | } | |
12356 | ||
3b421ab3 AM |
12357 | if (stub_type == ppc_stub_plt_call |
12358 | && irela + 1 < irelaend | |
12359 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
12360 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
12361 | { | |
12362 | if (!tocsave_find (htab, INSERT, | |
12363 | &local_syms, irela + 1, input_bfd)) | |
12364 | goto error_ret_free_internal; | |
12365 | } | |
12366 | else if (stub_type == ppc_stub_plt_call) | |
12367 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 12368 | |
721956f4 | 12369 | /* Support for grouping stub sections. */ |
6f20ed8a | 12370 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12371 | |
12372 | /* Get the name of this stub. */ | |
12373 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12374 | if (!stub_name) | |
12375 | goto error_ret_free_internal; | |
12376 | ||
12377 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12378 | stub_name, FALSE, FALSE); |
721956f4 AM |
12379 | if (stub_entry != NULL) |
12380 | { | |
12381 | /* The proper stub has already been created. */ | |
12382 | free (stub_name); | |
794e51c0 AM |
12383 | if (stub_type == ppc_stub_plt_call_r2save) |
12384 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12385 | continue; |
12386 | } | |
12387 | ||
25f53a85 | 12388 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12389 | if (stub_entry == NULL) |
12390 | { | |
12391 | free (stub_name); | |
6cdc0ccc AM |
12392 | error_ret_free_internal: |
12393 | if (elf_section_data (section)->relocs == NULL) | |
12394 | free (internal_relocs); | |
12395 | error_ret_free_local: | |
12396 | if (local_syms != NULL | |
12397 | && (symtab_hdr->contents | |
12398 | != (unsigned char *) local_syms)) | |
12399 | free (local_syms); | |
b34976b6 | 12400 | return FALSE; |
721956f4 AM |
12401 | } |
12402 | ||
ad8e1ba5 | 12403 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12404 | if (stub_type != ppc_stub_plt_call |
12405 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12406 | { |
12407 | stub_entry->target_value = code_value; | |
12408 | stub_entry->target_section = code_sec; | |
12409 | } | |
12410 | else | |
12411 | { | |
12412 | stub_entry->target_value = sym_value; | |
12413 | stub_entry->target_section = sym_sec; | |
12414 | } | |
721956f4 | 12415 | stub_entry->h = hash; |
e054468f | 12416 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12417 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12418 | |
12419 | if (stub_entry->h != NULL) | |
12420 | htab->stub_globals += 1; | |
721956f4 AM |
12421 | } |
12422 | ||
12423 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12424 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12425 | free (internal_relocs); |
721956f4 | 12426 | } |
6cdc0ccc AM |
12427 | |
12428 | if (local_syms != NULL | |
12429 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12430 | { | |
12431 | if (!info->keep_memory) | |
12432 | free (local_syms); | |
12433 | else | |
12434 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12435 | } | |
721956f4 AM |
12436 | } |
12437 | ||
5c3dead3 | 12438 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12439 | stub sections. */ |
e7d1c40c | 12440 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12441 | stub_sec != NULL; |
12442 | stub_sec = stub_sec->next) | |
e717da7e | 12443 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 12444 | { |
5c3dead3 | 12445 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
12446 | stub_sec->size = 0; |
12447 | stub_sec->reloc_count = 0; | |
84f5d08e | 12448 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12449 | } |
eea6121a AM |
12450 | |
12451 | htab->brlt->size = 0; | |
84f5d08e AM |
12452 | htab->brlt->reloc_count = 0; |
12453 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12454 | if (htab->relbrlt != NULL) |
eea6121a | 12455 | htab->relbrlt->size = 0; |
721956f4 | 12456 | |
63bc6f6c | 12457 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12458 | |
a4b6fadd AM |
12459 | for (group = htab->group; group != NULL; group = group->next) |
12460 | if (group->needs_save_res) | |
12461 | group->stub_sec->size += htab->sfpr->size; | |
12462 | ||
176a0d42 AM |
12463 | if (info->emitrelocations |
12464 | && htab->glink != NULL && htab->glink->size != 0) | |
12465 | { | |
12466 | htab->glink->reloc_count = 1; | |
12467 | htab->glink->flags |= SEC_RELOC; | |
12468 | } | |
12469 | ||
58d180e8 AM |
12470 | if (htab->glink_eh_frame != NULL |
12471 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 12472 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 12473 | { |
4bbe044a | 12474 | size_t size = 0, align; |
58d180e8 | 12475 | |
e7d1c40c | 12476 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12477 | stub_sec != NULL; |
12478 | stub_sec = stub_sec->next) | |
12479 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
da44f4e5 | 12480 | size += 24; |
58d180e8 AM |
12481 | if (htab->glink != NULL && htab->glink->size != 0) |
12482 | size += 24; | |
12483 | if (size != 0) | |
12484 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
12485 | align = 1; |
12486 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12487 | align -= 1; | |
12488 | size = (size + align) & ~align; | |
58d180e8 AM |
12489 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12490 | htab->glink_eh_frame->size = size; | |
12491 | } | |
12492 | ||
e7d1c40c AM |
12493 | if (htab->params->plt_stub_align != 0) |
12494 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12495 | stub_sec != NULL; |
12496 | stub_sec = stub_sec->next) | |
12497 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12498 | stub_sec->size = ((stub_sec->size |
12499 | + (1 << htab->params->plt_stub_align) - 1) | |
12500 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12501 | |
e7d1c40c | 12502 | for (stub_sec = htab->params->stub_bfd->sections; |
5c3dead3 AM |
12503 | stub_sec != NULL; |
12504 | stub_sec = stub_sec->next) | |
12505 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
12506 | && stub_sec->rawsize != stub_sec->size) | |
12507 | break; | |
12508 | ||
12509 | /* Exit from this loop when no stubs have been added, and no stubs | |
12510 | have changed size. */ | |
58d180e8 AM |
12511 | if (stub_sec == NULL |
12512 | && (htab->glink_eh_frame == NULL | |
12513 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12514 | break; |
12515 | ||
721956f4 | 12516 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12517 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12518 | } |
12519 | ||
da44f4e5 AM |
12520 | if (htab->glink_eh_frame != NULL |
12521 | && htab->glink_eh_frame->size != 0) | |
12522 | { | |
12523 | bfd_vma val; | |
12524 | bfd_byte *p, *last_fde; | |
12525 | size_t last_fde_len, size, align, pad; | |
12526 | asection *stub_sec; | |
12527 | ||
12528 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12529 | if (p == NULL) | |
12530 | return FALSE; | |
12531 | htab->glink_eh_frame->contents = p; | |
12532 | last_fde = p; | |
12533 | ||
12534 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12535 | /* CIE length (rewrite in case little-endian). */ | |
12536 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; | |
12537 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
12538 | p += sizeof (glink_eh_frame_cie); | |
12539 | ||
12540 | for (stub_sec = htab->params->stub_bfd->sections; | |
12541 | stub_sec != NULL; | |
12542 | stub_sec = stub_sec->next) | |
12543 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12544 | { | |
12545 | last_fde = p; | |
12546 | last_fde_len = 20; | |
12547 | /* FDE length. */ | |
12548 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12549 | p += 4; | |
12550 | /* CIE pointer. */ | |
12551 | val = p - htab->glink_eh_frame->contents; | |
12552 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12553 | p += 4; | |
12554 | /* Offset to stub section, written later. */ | |
12555 | p += 4; | |
12556 | /* stub section size. */ | |
12557 | bfd_put_32 (htab->elf.dynobj, stub_sec->size, p); | |
12558 | p += 4; | |
12559 | /* Augmentation. */ | |
12560 | p += 1; | |
12561 | /* Pad. */ | |
12562 | p += 7; | |
12563 | } | |
12564 | if (htab->glink != NULL && htab->glink->size != 0) | |
12565 | { | |
12566 | last_fde = p; | |
12567 | last_fde_len = 20; | |
12568 | /* FDE length. */ | |
12569 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12570 | p += 4; | |
12571 | /* CIE pointer. */ | |
12572 | val = p - htab->glink_eh_frame->contents; | |
12573 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12574 | p += 4; | |
12575 | /* Offset to .glink, written later. */ | |
12576 | p += 4; | |
12577 | /* .glink size. */ | |
12578 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
12579 | p += 4; | |
12580 | /* Augmentation. */ | |
12581 | p += 1; | |
12582 | ||
12583 | *p++ = DW_CFA_advance_loc + 1; | |
12584 | *p++ = DW_CFA_register; | |
12585 | *p++ = 65; | |
12586 | *p++ = 12; | |
12587 | *p++ = DW_CFA_advance_loc + 4; | |
12588 | *p++ = DW_CFA_restore_extended; | |
12589 | *p++ = 65; | |
12590 | } | |
12591 | /* Subsume any padding into the last FDE if user .eh_frame | |
12592 | sections are aligned more than glink_eh_frame. Otherwise any | |
12593 | zero padding will be seen as a terminator. */ | |
12594 | size = p - htab->glink_eh_frame->contents; | |
12595 | align = 1; | |
12596 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12597 | align -= 1; | |
12598 | pad = ((size + align) & ~align) - size; | |
12599 | htab->glink_eh_frame->size = size + pad; | |
12600 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
12601 | } | |
12602 | ||
d969d15f AM |
12603 | maybe_strip_output (info, htab->brlt); |
12604 | if (htab->glink_eh_frame != NULL) | |
12605 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12606 | |
b34976b6 | 12607 | return TRUE; |
721956f4 AM |
12608 | } |
12609 | ||
12610 | /* Called after we have determined section placement. If sections | |
805fc799 | 12611 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12612 | |
805fc799 | 12613 | bfd_vma |
1c865ab2 | 12614 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12615 | { |
805fc799 | 12616 | asection *s; |
a27e685f | 12617 | bfd_vma TOCstart, adjust; |
721956f4 | 12618 | |
43417696 AM |
12619 | if (info != NULL) |
12620 | { | |
12621 | struct elf_link_hash_entry *h; | |
12622 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
12623 | ||
12624 | if (is_elf_hash_table (htab) | |
12625 | && htab->hgot != NULL) | |
12626 | h = htab->hgot; | |
12627 | else | |
12628 | { | |
12629 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
12630 | if (is_elf_hash_table (htab)) | |
12631 | htab->hgot = h; | |
12632 | } | |
12633 | if (h != NULL | |
12634 | && h->root.type == bfd_link_hash_defined | |
12635 | && !h->root.linker_def | |
12636 | && (!is_elf_hash_table (htab) | |
12637 | || h->def_regular)) | |
12638 | { | |
12639 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
12640 | + h->root.u.def.section->output_offset | |
12641 | + h->root.u.def.section->output_section->vma); | |
12642 | _bfd_set_gp_value (obfd, TOCstart); | |
12643 | return TOCstart; | |
12644 | } | |
12645 | } | |
12646 | ||
805fc799 AM |
12647 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12648 | order. The TOC starts where the first of these sections starts. */ | |
12649 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12650 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12651 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12652 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12653 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12654 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12655 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12656 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12657 | { |
12658 | /* This may happen for | |
12659 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12660 | .toc directive | |
12661 | o bad linker script | |
12662 | o --gc-sections and empty TOC sections | |
12663 | ||
12664 | FIXME: Warn user? */ | |
12665 | ||
12666 | /* Look for a likely section. We probably won't even be | |
12667 | using TOCstart. */ | |
12668 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12669 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12670 | | SEC_EXCLUDE)) | |
805fc799 AM |
12671 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12672 | break; | |
721956f4 | 12673 | if (s == NULL) |
805fc799 | 12674 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12675 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12676 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12677 | break; | |
721956f4 | 12678 | if (s == NULL) |
805fc799 | 12679 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12680 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12681 | == SEC_ALLOC) | |
805fc799 | 12682 | break; |
721956f4 | 12683 | if (s == NULL) |
805fc799 | 12684 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12685 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12686 | break; |
12687 | } | |
721956f4 | 12688 | |
805fc799 AM |
12689 | TOCstart = 0; |
12690 | if (s != NULL) | |
12691 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12692 | |
a27e685f AM |
12693 | /* Force alignment. */ |
12694 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
12695 | TOCstart -= adjust; | |
1c865ab2 AM |
12696 | _bfd_set_gp_value (obfd, TOCstart); |
12697 | ||
810d4e75 | 12698 | if (info != NULL && s != NULL) |
1c865ab2 AM |
12699 | { |
12700 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12701 | ||
810d4e75 AM |
12702 | if (htab != NULL) |
12703 | { | |
12704 | if (htab->elf.hgot != NULL) | |
12705 | { | |
a27e685f | 12706 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
12707 | htab->elf.hgot->root.u.def.section = s; |
12708 | } | |
12709 | } | |
12710 | else | |
1c865ab2 | 12711 | { |
810d4e75 AM |
12712 | struct bfd_link_hash_entry *bh = NULL; |
12713 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
12714 | s, TOC_BASE_OFF - adjust, |
12715 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
12716 | } |
12717 | } | |
805fc799 | 12718 | return TOCstart; |
721956f4 AM |
12719 | } |
12720 | ||
a345bc8d AM |
12721 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12722 | write out any global entry stubs. */ | |
12723 | ||
12724 | static bfd_boolean | |
12725 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12726 | { | |
12727 | struct bfd_link_info *info; | |
12728 | struct ppc_link_hash_table *htab; | |
12729 | struct plt_entry *pent; | |
12730 | asection *s; | |
12731 | ||
12732 | if (h->root.type == bfd_link_hash_indirect) | |
12733 | return TRUE; | |
12734 | ||
12735 | if (!h->pointer_equality_needed) | |
12736 | return TRUE; | |
12737 | ||
12738 | if (h->def_regular) | |
12739 | return TRUE; | |
12740 | ||
12741 | info = inf; | |
12742 | htab = ppc_hash_table (info); | |
12743 | if (htab == NULL) | |
12744 | return FALSE; | |
12745 | ||
12746 | s = htab->glink; | |
12747 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
12748 | if (pent->plt.offset != (bfd_vma) -1 | |
12749 | && pent->addend == 0) | |
12750 | { | |
12751 | bfd_byte *p; | |
12752 | asection *plt; | |
12753 | bfd_vma off; | |
12754 | ||
a345bc8d | 12755 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12756 | plt = htab->elf.splt; |
a345bc8d AM |
12757 | if (!htab->elf.dynamic_sections_created |
12758 | || h->dynindx == -1) | |
33e44f2e | 12759 | plt = htab->elf.iplt; |
a345bc8d AM |
12760 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
12761 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
12762 | ||
12763 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12764 | { | |
12765 | info->callbacks->einfo | |
12766 | (_("%P: linkage table error against `%T'\n"), | |
12767 | h->root.root.string); | |
12768 | bfd_set_error (bfd_error_bad_value); | |
12769 | htab->stub_error = TRUE; | |
12770 | } | |
12771 | ||
7341d5e2 AM |
12772 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
12773 | if (htab->params->emit_stub_syms) | |
12774 | { | |
12775 | size_t len = strlen (h->root.root.string); | |
12776 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
12777 | ||
12778 | if (name == NULL) | |
12779 | return FALSE; | |
12780 | ||
12781 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
12782 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
12783 | if (h == NULL) | |
12784 | return FALSE; | |
12785 | if (h->root.type == bfd_link_hash_new) | |
12786 | { | |
12787 | h->root.type = bfd_link_hash_defined; | |
12788 | h->root.u.def.section = s; | |
12789 | h->root.u.def.value = p - s->contents; | |
12790 | h->ref_regular = 1; | |
12791 | h->def_regular = 1; | |
12792 | h->ref_regular_nonweak = 1; | |
12793 | h->forced_local = 1; | |
12794 | h->non_elf = 0; | |
2ec55de3 | 12795 | h->root.linker_def = 1; |
7341d5e2 AM |
12796 | } |
12797 | } | |
12798 | ||
a345bc8d AM |
12799 | if (PPC_HA (off) != 0) |
12800 | { | |
12801 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12802 | p += 4; | |
12803 | } | |
12804 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12805 | p += 4; | |
12806 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12807 | p += 4; | |
12808 | bfd_put_32 (s->owner, BCTR, p); | |
12809 | break; | |
12810 | } | |
12811 | return TRUE; | |
12812 | } | |
12813 | ||
721956f4 AM |
12814 | /* Build all the stubs associated with the current output file. |
12815 | The stubs are kept in a hash table attached to the main linker | |
12816 | hash table. This function is called via gldelf64ppc_finish. */ | |
12817 | ||
b34976b6 | 12818 | bfd_boolean |
e7d1c40c | 12819 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12820 | char **stats) |
5d1634d7 AM |
12821 | { |
12822 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 12823 | struct map_stub *group; |
721956f4 | 12824 | asection *stub_sec; |
5d1634d7 | 12825 | bfd_byte *p; |
e717da7e | 12826 | int stub_sec_count = 0; |
5d1634d7 | 12827 | |
4dfe6ac6 NC |
12828 | if (htab == NULL) |
12829 | return FALSE; | |
12830 | ||
eea6121a | 12831 | /* Allocate memory to hold the linker stubs. */ |
e7d1c40c | 12832 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12833 | stub_sec != NULL; |
12834 | stub_sec = stub_sec->next) | |
eea6121a AM |
12835 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
12836 | && stub_sec->size != 0) | |
e717da7e | 12837 | { |
e7d1c40c | 12838 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
12839 | if (stub_sec->contents == NULL) |
12840 | return FALSE; | |
12841 | /* We want to check that built size is the same as calculated | |
12842 | size. rawsize is a convenient location to use. */ | |
12843 | stub_sec->rawsize = stub_sec->size; | |
12844 | stub_sec->size = 0; | |
e717da7e | 12845 | } |
5d1634d7 | 12846 | |
23eb7e01 | 12847 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12848 | { |
9f951329 | 12849 | unsigned int indx; |
ad8e1ba5 | 12850 | bfd_vma plt0; |
9f951329 | 12851 | |
721956f4 | 12852 | /* Build the .glink plt call stub. */ |
e7d1c40c | 12853 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12854 | { |
12855 | struct elf_link_hash_entry *h; | |
468392fb AM |
12856 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12857 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12858 | if (h == NULL) |
12859 | return FALSE; | |
12860 | if (h->root.type == bfd_link_hash_new) | |
12861 | { | |
12862 | h->root.type = bfd_link_hash_defined; | |
12863 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 12864 | h->root.u.def.value = 8; |
f5385ebf AM |
12865 | h->ref_regular = 1; |
12866 | h->def_regular = 1; | |
12867 | h->ref_regular_nonweak = 1; | |
12868 | h->forced_local = 1; | |
12869 | h->non_elf = 0; | |
2ec55de3 | 12870 | h->root.linker_def = 1; |
97b639ba AM |
12871 | } |
12872 | } | |
33e44f2e AM |
12873 | plt0 = (htab->elf.splt->output_section->vma |
12874 | + htab->elf.splt->output_offset | |
12875 | - 16); | |
176a0d42 AM |
12876 | if (info->emitrelocations) |
12877 | { | |
12878 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12879 | if (r == NULL) | |
12880 | return FALSE; | |
12881 | r->r_offset = (htab->glink->output_offset | |
12882 | + htab->glink->output_section->vma); | |
12883 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12884 | r->r_addend = plt0; | |
12885 | } | |
4ce794b7 | 12886 | p = htab->glink->contents; |
176a0d42 | 12887 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12888 | bfd_put_64 (htab->glink->owner, plt0, p); |
12889 | p += 8; | |
b9e5796b AM |
12890 | if (htab->opd_abi) |
12891 | { | |
12892 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
12893 | p += 4; | |
12894 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12895 | p += 4; | |
12896 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12897 | p += 4; | |
12898 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12899 | p += 4; | |
12900 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
12901 | p += 4; | |
12902 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12903 | p += 4; | |
12904 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12905 | p += 4; | |
12906 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
12907 | p += 4; | |
12908 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12909 | p += 4; | |
12910 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
12911 | p += 4; | |
12912 | } | |
12913 | else | |
12914 | { | |
12915 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
12916 | p += 4; | |
12917 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12918 | p += 4; | |
12919 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12920 | p += 4; | |
12921 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12922 | p += 4; | |
12923 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
12924 | p += 4; | |
12925 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
12926 | p += 4; | |
12927 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12928 | p += 4; | |
12929 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
12930 | p += 4; | |
12931 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12932 | p += 4; | |
12933 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
12934 | p += 4; | |
12935 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12936 | p += 4; | |
12937 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
12938 | p += 4; | |
12939 | } | |
4ce794b7 | 12940 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 12941 | p += 4; |
ee4bf8d2 AM |
12942 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
12943 | { | |
12944 | bfd_put_32 (htab->glink->owner, NOP, p); | |
12945 | p += 4; | |
12946 | } | |
ad8e1ba5 | 12947 | |
9f951329 AM |
12948 | /* Build the .glink lazy link call stubs. */ |
12949 | indx = 0; | |
a345bc8d | 12950 | while (p < htab->glink->contents + htab->glink->rawsize) |
9f951329 | 12951 | { |
b9e5796b | 12952 | if (htab->opd_abi) |
9f951329 | 12953 | { |
b9e5796b AM |
12954 | if (indx < 0x8000) |
12955 | { | |
12956 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
12957 | p += 4; | |
12958 | } | |
12959 | else | |
12960 | { | |
12961 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
12962 | p += 4; | |
12963 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
12964 | p); | |
12965 | p += 4; | |
12966 | } | |
9f951329 | 12967 | } |
4ce794b7 | 12968 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12969 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12970 | indx++; |
9f951329 AM |
12971 | p += 4; |
12972 | } | |
a345bc8d AM |
12973 | |
12974 | /* Build .glink global entry stubs. */ | |
12975 | if (htab->glink->size > htab->glink->rawsize) | |
afe397ea | 12976 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
5d1634d7 | 12977 | } |
5d1634d7 | 12978 | |
7341d5e2 | 12979 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 12980 | { |
4ce794b7 | 12981 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12982 | htab->brlt->size); |
4ce794b7 | 12983 | if (htab->brlt->contents == NULL) |
b34976b6 | 12984 | return FALSE; |
721956f4 | 12985 | } |
ee75fd95 | 12986 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12987 | { |
12988 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12989 | htab->relbrlt->size); |
63bc6f6c AM |
12990 | if (htab->relbrlt->contents == NULL) |
12991 | return FALSE; | |
12992 | } | |
5d1634d7 | 12993 | |
721956f4 AM |
12994 | /* Build the stubs as directed by the stub hash table. */ |
12995 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12996 | |
a4b6fadd AM |
12997 | for (group = htab->group; group != NULL; group = group->next) |
12998 | if (group->needs_save_res) | |
12999 | { | |
13000 | stub_sec = group->stub_sec; | |
13001 | memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents, | |
13002 | htab->sfpr->size); | |
13003 | if (htab->params->emit_stub_syms) | |
13004 | { | |
13005 | unsigned int i; | |
13006 | ||
13007 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13008 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13009 | return FALSE; | |
13010 | } | |
13011 | stub_sec->size += htab->sfpr->size; | |
13012 | } | |
13013 | ||
aa8a7074 AM |
13014 | if (htab->relbrlt != NULL) |
13015 | htab->relbrlt->reloc_count = 0; | |
13016 | ||
e7d1c40c AM |
13017 | if (htab->params->plt_stub_align != 0) |
13018 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
13019 | stub_sec != NULL; |
13020 | stub_sec = stub_sec->next) | |
13021 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
13022 | stub_sec->size = ((stub_sec->size |
13023 | + (1 << htab->params->plt_stub_align) - 1) | |
13024 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 13025 | |
e7d1c40c | 13026 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
13027 | stub_sec != NULL; |
13028 | stub_sec = stub_sec->next) | |
e717da7e AM |
13029 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
13030 | { | |
13031 | stub_sec_count += 1; | |
eea6121a | 13032 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
13033 | break; |
13034 | } | |
5d1634d7 | 13035 | |
da44f4e5 AM |
13036 | /* Note that the glink_eh_frame check here is not only testing that |
13037 | the generated size matched the calculated size but also that | |
13038 | bfd_elf_discard_info didn't make any changes to the section. */ | |
721956f4 | 13039 | if (stub_sec != NULL |
58d180e8 AM |
13040 | || (htab->glink_eh_frame != NULL |
13041 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 13042 | { |
b34976b6 | 13043 | htab->stub_error = TRUE; |
8de848d8 | 13044 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 13045 | } |
721956f4 | 13046 | |
d2a300cf AM |
13047 | if (htab->stub_error) |
13048 | return FALSE; | |
13049 | ||
13050 | if (stats != NULL) | |
13051 | { | |
13052 | *stats = bfd_malloc (500); | |
13053 | if (*stats == NULL) | |
13054 | return FALSE; | |
13055 | ||
ee75fd95 | 13056 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
13057 | " branch %lu\n" |
13058 | " toc adjust %lu\n" | |
13059 | " long branch %lu\n" | |
13060 | " long toc adj %lu\n" | |
794e51c0 | 13061 | " plt call %lu\n" |
7341d5e2 AM |
13062 | " plt call toc %lu\n" |
13063 | " global entry %lu"), | |
e717da7e | 13064 | stub_sec_count, |
ee75fd95 | 13065 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
13066 | htab->stub_count[ppc_stub_long_branch - 1], |
13067 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
13068 | htab->stub_count[ppc_stub_plt_branch - 1], | |
13069 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 13070 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
13071 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
13072 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
13073 | } |
13074 | return TRUE; | |
5bd4f169 AM |
13075 | } |
13076 | ||
99877b66 AM |
13077 | /* This function undoes the changes made by add_symbol_adjust. */ |
13078 | ||
13079 | static bfd_boolean | |
13080 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
13081 | { | |
13082 | struct ppc_link_hash_entry *eh; | |
13083 | ||
13084 | if (h->root.type == bfd_link_hash_indirect) | |
13085 | return TRUE; | |
13086 | ||
99877b66 AM |
13087 | eh = (struct ppc_link_hash_entry *) h; |
13088 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
13089 | return TRUE; | |
13090 | ||
13091 | eh->elf.root.type = bfd_link_hash_undefined; | |
13092 | return TRUE; | |
13093 | } | |
13094 | ||
13095 | void | |
13096 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
13097 | { | |
13098 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
13099 | |
13100 | if (htab != NULL) | |
13101 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
13102 | } |
13103 | ||
60124e18 AM |
13104 | /* What to do when ld finds relocations against symbols defined in |
13105 | discarded sections. */ | |
13106 | ||
13107 | static unsigned int | |
13108 | ppc64_elf_action_discarded (asection *sec) | |
13109 | { | |
13110 | if (strcmp (".opd", sec->name) == 0) | |
13111 | return 0; | |
13112 | ||
13113 | if (strcmp (".toc", sec->name) == 0) | |
13114 | return 0; | |
13115 | ||
bce50a28 JJ |
13116 | if (strcmp (".toc1", sec->name) == 0) |
13117 | return 0; | |
13118 | ||
60124e18 AM |
13119 | return _bfd_elf_default_action_discarded (sec); |
13120 | } | |
13121 | ||
5bd4f169 AM |
13122 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13123 | to handle the relocations for a section. | |
13124 | ||
13125 | The relocs are always passed as Rela structures; if the section | |
13126 | actually uses Rel structures, the r_addend field will always be | |
13127 | zero. | |
13128 | ||
13129 | This function is responsible for adjust the section contents as | |
13130 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13131 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13132 | necessary. |
13133 | ||
13134 | This function does not have to worry about setting the reloc | |
13135 | address or the reloc symbol index. | |
13136 | ||
13137 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13138 | ||
13139 | LOCAL_SECTIONS is an array giving the section in the input file | |
13140 | corresponding to the st_shndx field of each local symbol. | |
13141 | ||
13142 | The global hash table entry for the global symbols can be found | |
13143 | via elf_sym_hashes (input_bfd). | |
13144 | ||
1049f94e | 13145 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13146 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13147 | going to be the section symbol corresponding to the output | |
13148 | section, which means that the addend must be adjusted | |
13149 | accordingly. */ | |
13150 | ||
b34976b6 | 13151 | static bfd_boolean |
4ce794b7 AM |
13152 | ppc64_elf_relocate_section (bfd *output_bfd, |
13153 | struct bfd_link_info *info, | |
13154 | bfd *input_bfd, | |
13155 | asection *input_section, | |
13156 | bfd_byte *contents, | |
13157 | Elf_Internal_Rela *relocs, | |
13158 | Elf_Internal_Sym *local_syms, | |
13159 | asection **local_sections) | |
5bd4f169 | 13160 | { |
65f38f15 | 13161 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13162 | Elf_Internal_Shdr *symtab_hdr; |
13163 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
13164 | Elf_Internal_Rela *rel; |
13165 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
13166 | Elf_Internal_Rela outrel; |
13167 | bfd_byte *loc; | |
411e1bfb | 13168 | struct got_entry **local_got_ents; |
5bd4f169 | 13169 | bfd_vma TOCstart; |
b34976b6 AM |
13170 | bfd_boolean ret = TRUE; |
13171 | bfd_boolean is_opd; | |
794e51c0 AM |
13172 | /* Assume 'at' branch hints. */ |
13173 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 13174 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 13175 | |
65f38f15 | 13176 | /* Initialize howto table if needed. */ |
5bd4f169 | 13177 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13178 | ppc_howto_init (); |
13179 | ||
65f38f15 | 13180 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13181 | if (htab == NULL) |
13182 | return FALSE; | |
ee75fd95 AM |
13183 | |
13184 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13185 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13186 | return TRUE; |
13187 | ||
0c8d6e5c | 13188 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13189 | |
411e1bfb | 13190 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13191 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13192 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13193 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13194 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13195 | |
5bd4f169 AM |
13196 | rel = relocs; |
13197 | relend = relocs + input_section->reloc_count; | |
13198 | for (; rel < relend; rel++) | |
13199 | { | |
04c9666a | 13200 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13201 | bfd_vma addend; |
5bd4f169 AM |
13202 | bfd_reloc_status_type r; |
13203 | Elf_Internal_Sym *sym; | |
13204 | asection *sec; | |
039b3fef AM |
13205 | struct elf_link_hash_entry *h_elf; |
13206 | struct ppc_link_hash_entry *h; | |
13207 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13208 | const char *sym_name; |
0d4792f7 | 13209 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13210 | bfd_vma toc_addend; |
f961d9dd AM |
13211 | unsigned char tls_mask, tls_gd, tls_type; |
13212 | unsigned char sym_type; | |
5bd4f169 | 13213 | bfd_vma relocation; |
b34976b6 AM |
13214 | bfd_boolean unresolved_reloc; |
13215 | bfd_boolean warned; | |
bc30df16 | 13216 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13217 | unsigned int insn; |
e11840f9 | 13218 | unsigned int mask; |
721956f4 AM |
13219 | struct ppc_stub_hash_entry *stub_entry; |
13220 | bfd_vma max_br_offset; | |
13221 | bfd_vma from; | |
31c76678 | 13222 | const Elf_Internal_Rela orig_rel = *rel; |
b80eed39 AM |
13223 | reloc_howto_type *howto; |
13224 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13225 | |
4ce794b7 | 13226 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13227 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13228 | |
13229 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13230 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13231 | proper TOC base to use. */ | |
13232 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
13233 | && rel != relocs | |
13234 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
13235 | && is_opd) | |
13236 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
13237 | ||
4ce794b7 AM |
13238 | sym = NULL; |
13239 | sec = NULL; | |
039b3fef | 13240 | h_elf = NULL; |
4ce794b7 | 13241 | sym_name = NULL; |
b34976b6 AM |
13242 | unresolved_reloc = FALSE; |
13243 | warned = FALSE; | |
65f38f15 | 13244 | |
0b13192e | 13245 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13246 | { |
13247 | /* It's a local symbol. */ | |
74f0fb50 | 13248 | struct _opd_sec_data *opd; |
4025353c | 13249 | |
5bd4f169 AM |
13250 | sym = local_syms + r_symndx; |
13251 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13252 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13253 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13254 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13255 | opd = get_opd_info (sec); |
13256 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13257 | { |
51aecdc5 AM |
13258 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
13259 | + rel->r_addend)]; | |
4025353c AM |
13260 | if (adjust == -1) |
13261 | relocation = 0; | |
13262 | else | |
4cc603a5 AM |
13263 | { |
13264 | /* If this is a relocation against the opd section sym | |
13265 | and we have edited .opd, adjust the reloc addend so | |
13266 | that ld -r and ld --emit-relocs output is correct. | |
13267 | If it is a reloc against some other .opd symbol, | |
13268 | then the symbol value will be adjusted later. */ | |
13269 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13270 | rel->r_addend += adjust; | |
13271 | else | |
13272 | relocation += adjust; | |
13273 | } | |
1e2f5b6e | 13274 | } |
5bd4f169 AM |
13275 | } |
13276 | else | |
13277 | { | |
62d887d4 L |
13278 | bfd_boolean ignored; |
13279 | ||
b2a8e766 AM |
13280 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13281 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13282 | h_elf, sec, relocation, |
62d887d4 | 13283 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13284 | sym_name = h_elf->root.root.string; |
13285 | sym_type = h_elf->type; | |
b69fdb4e AM |
13286 | if (sec != NULL |
13287 | && sec->owner == output_bfd | |
13288 | && strcmp (sec->name, ".opd") == 0) | |
13289 | { | |
13290 | /* This is a symbol defined in a linker script. All | |
13291 | such are defined in output sections, even those | |
13292 | defined by simple assignment from a symbol defined in | |
13293 | an input section. Transfer the symbol to an | |
13294 | appropriate input .opd section, so that a branch to | |
13295 | this symbol will be mapped to the location specified | |
13296 | by the opd entry. */ | |
13297 | struct bfd_link_order *lo; | |
13298 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13299 | if (lo->type == bfd_indirect_link_order) | |
13300 | { | |
13301 | asection *isec = lo->u.indirect.section; | |
13302 | if (h_elf->root.u.def.value >= isec->output_offset | |
13303 | && h_elf->root.u.def.value < (isec->output_offset | |
13304 | + isec->size)) | |
13305 | { | |
13306 | h_elf->root.u.def.value -= isec->output_offset; | |
13307 | h_elf->root.u.def.section = isec; | |
13308 | sec = isec; | |
13309 | break; | |
13310 | } | |
13311 | } | |
13312 | } | |
5bd4f169 | 13313 | } |
039b3fef | 13314 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13315 | |
dbaa2011 | 13316 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 13317 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
13318 | rel, 1, relend, |
13319 | ppc64_elf_howto_table[r_type], 0, | |
e4067dbb | 13320 | contents); |
ab96bf03 | 13321 | |
0e1862bb | 13322 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
13323 | continue; |
13324 | ||
f40da81b AM |
13325 | if (h != NULL && &h->elf == htab->elf.hgot) |
13326 | { | |
6f20ed8a | 13327 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
13328 | sec = bfd_abs_section_ptr; |
13329 | unresolved_reloc = FALSE; | |
13330 | } | |
13331 | ||
951fd09b AM |
13332 | /* TLS optimizations. Replace instruction sequences and relocs |
13333 | based on information we collected in tls_optimize. We edit | |
13334 | RELOCS so that --emit-relocs will output something sensible | |
13335 | for the final instruction stream. */ | |
13336 | tls_mask = 0; | |
13337 | tls_gd = 0; | |
0d4792f7 | 13338 | toc_symndx = 0; |
727fc41e AM |
13339 | if (h != NULL) |
13340 | tls_mask = h->tls_mask; | |
13341 | else if (local_got_ents != NULL) | |
411e1bfb | 13342 | { |
e054468f AM |
13343 | struct plt_entry **local_plt = (struct plt_entry **) |
13344 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13345 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13346 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13347 | tls_mask = lgot_masks[r_symndx]; |
13348 | } | |
13349 | if (tls_mask == 0 | |
13350 | && (r_type == R_PPC64_TLS | |
13351 | || r_type == R_PPC64_TLSGD | |
13352 | || r_type == R_PPC64_TLSLD)) | |
13353 | { | |
13354 | /* Check for toc tls entries. */ | |
f961d9dd | 13355 | unsigned char *toc_tls; |
0d4792f7 | 13356 | |
727fc41e AM |
13357 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13358 | &local_syms, rel, input_bfd)) | |
13359 | return FALSE; | |
0d4792f7 | 13360 | |
727fc41e AM |
13361 | if (toc_tls) |
13362 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13363 | } |
13364 | ||
13365 | /* Check that tls relocs are used with tls syms, and non-tls | |
13366 | relocs are used with non-tls syms. */ | |
cf35638d | 13367 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13368 | && r_type != R_PPC64_NONE |
13369 | && (h == NULL | |
039b3fef AM |
13370 | || h->elf.root.type == bfd_link_hash_defined |
13371 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13372 | && (IS_PPC64_TLS_RELOC (r_type) |
13373 | != (sym_type == STT_TLS | |
13374 | || (sym_type == STT_SECTION | |
13375 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13376 | { |
727fc41e AM |
13377 | if (tls_mask != 0 |
13378 | && (r_type == R_PPC64_TLS | |
13379 | || r_type == R_PPC64_TLSGD | |
13380 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13381 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13382 | ; | |
13383 | else | |
25f53a85 | 13384 | info->callbacks->einfo |
1d483afe | 13385 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
13386 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
13387 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 13388 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13389 | ppc64_elf_howto_table[r_type]->name, |
13390 | sym_name); | |
411e1bfb AM |
13391 | } |
13392 | ||
13393 | /* Ensure reloc mapping code below stays sane. */ | |
13394 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13395 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13396 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13397 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13398 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13399 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13400 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13401 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13402 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13403 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13404 | abort (); | |
0d4792f7 | 13405 | |
411e1bfb AM |
13406 | switch (r_type) |
13407 | { | |
13408 | default: | |
411e1bfb AM |
13409 | break; |
13410 | ||
ba761f19 AM |
13411 | case R_PPC64_LO_DS_OPT: |
13412 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
13413 | if ((insn & (0x3f << 26)) != 58u << 26) | |
13414 | abort (); | |
13415 | insn += (14u << 26) - (58u << 26); | |
13416 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
13417 | r_type = R_PPC64_TOC16_LO; | |
13418 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13419 | break; | |
13420 | ||
411e1bfb AM |
13421 | case R_PPC64_TOC16: |
13422 | case R_PPC64_TOC16_LO: | |
13423 | case R_PPC64_TOC16_DS: | |
13424 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13425 | { |
13426 | /* Check for toc tls entries. */ | |
f961d9dd | 13427 | unsigned char *toc_tls; |
951fd09b | 13428 | int retval; |
411e1bfb | 13429 | |
3a71aa26 AM |
13430 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13431 | &local_syms, rel, input_bfd); | |
951fd09b | 13432 | if (retval == 0) |
411e1bfb AM |
13433 | return FALSE; |
13434 | ||
13435 | if (toc_tls) | |
13436 | { | |
951fd09b | 13437 | tls_mask = *toc_tls; |
411e1bfb AM |
13438 | if (r_type == R_PPC64_TOC16_DS |
13439 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13440 | { |
13441 | if (tls_mask != 0 | |
13442 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13443 | goto toctprel; | |
13444 | } | |
411e1bfb | 13445 | else |
951fd09b AM |
13446 | { |
13447 | /* If we found a GD reloc pair, then we might be | |
13448 | doing a GD->IE transition. */ | |
13449 | if (retval == 2) | |
13450 | { | |
13451 | tls_gd = TLS_TPRELGD; | |
13452 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13453 | goto tls_ldgd_opt; |
951fd09b AM |
13454 | } |
13455 | else if (retval == 3) | |
13456 | { | |
13457 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13458 | goto tls_ldgd_opt; |
951fd09b AM |
13459 | } |
13460 | } | |
411e1bfb AM |
13461 | } |
13462 | } | |
13463 | break; | |
13464 | ||
9d6ded02 AM |
13465 | case R_PPC64_GOT_TPREL16_HI: |
13466 | case R_PPC64_GOT_TPREL16_HA: | |
13467 | if (tls_mask != 0 | |
13468 | && (tls_mask & TLS_TPREL) == 0) | |
13469 | { | |
13470 | rel->r_offset -= d_offset; | |
13471 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
13472 | r_type = R_PPC64_NONE; | |
13473 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13474 | } | |
13475 | break; | |
13476 | ||
411e1bfb AM |
13477 | case R_PPC64_GOT_TPREL16_DS: |
13478 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13479 | if (tls_mask != 0 |
13480 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13481 | { |
81407a69 | 13482 | toctprel: |
4fe5ca5b | 13483 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
13484 | insn &= 31 << 21; |
13485 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 13486 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 13487 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13488 | if (toc_symndx != 0) |
13489 | { | |
13490 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13491 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13492 | /* We changed the symbol. Start over in order to |
13493 | get h, sym, sec etc. right. */ | |
13494 | rel--; | |
13495 | continue; | |
13496 | } | |
13497 | else | |
13498 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13499 | } |
13500 | break; | |
13501 | ||
13502 | case R_PPC64_TLS: | |
951fd09b AM |
13503 | if (tls_mask != 0 |
13504 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13505 | { |
411e1bfb | 13506 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13507 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13508 | if (insn == 0) | |
411e1bfb | 13509 | abort (); |
411e1bfb | 13510 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13511 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13512 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13513 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13514 | r_type = R_PPC64_TPREL16_LO; |
13515 | if (toc_symndx != 0) | |
13516 | { | |
13517 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13518 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13519 | /* We changed the symbol. Start over in order to |
13520 | get h, sym, sec etc. right. */ | |
13521 | rel--; | |
13522 | continue; | |
13523 | } | |
13524 | else | |
13525 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13526 | } |
13527 | break; | |
13528 | ||
411e1bfb AM |
13529 | case R_PPC64_GOT_TLSGD16_HI: |
13530 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13531 | tls_gd = TLS_TPRELGD; |
13532 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13533 | goto tls_gdld_hi; | |
13534 | break; | |
13535 | ||
411e1bfb AM |
13536 | case R_PPC64_GOT_TLSLD16_HI: |
13537 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13538 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13539 | { |
951fd09b AM |
13540 | tls_gdld_hi: |
13541 | if ((tls_mask & tls_gd) != 0) | |
13542 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13543 | + R_PPC64_GOT_TPREL16_DS); | |
13544 | else | |
411e1bfb | 13545 | { |
4fe5ca5b | 13546 | rel->r_offset -= d_offset; |
727ac201 | 13547 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13548 | r_type = R_PPC64_NONE; |
411e1bfb | 13549 | } |
951fd09b | 13550 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13551 | } |
13552 | break; | |
13553 | ||
951fd09b AM |
13554 | case R_PPC64_GOT_TLSGD16: |
13555 | case R_PPC64_GOT_TLSGD16_LO: | |
13556 | tls_gd = TLS_TPRELGD; | |
13557 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13558 | goto tls_ldgd_opt; |
951fd09b | 13559 | break; |
411e1bfb | 13560 | |
951fd09b AM |
13561 | case R_PPC64_GOT_TLSLD16: |
13562 | case R_PPC64_GOT_TLSLD16_LO: | |
13563 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13564 | { | |
3a71aa26 | 13565 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
13566 | bfd_vma offset; |
13567 | ||
13568 | tls_ldgd_opt: | |
727fc41e AM |
13569 | offset = (bfd_vma) -1; |
13570 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13571 | __tls_get_addr calls, we must trust that the call | |
13572 | stays with its arg setup insns, ie. that the next | |
13573 | reloc is the __tls_get_addr call associated with | |
13574 | the current reloc. Edit both insns. */ | |
13575 | if (input_section->has_tls_get_addr_call | |
13576 | && rel + 1 < relend | |
13577 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13578 | htab->tls_get_addr, | |
13579 | htab->tls_get_addr_fd)) | |
13580 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
13581 | /* We read the low GOT_TLS (or TOC16) insn because we |
13582 | need to keep the destination reg. It may be | |
13583 | something other than the usual r3, and moved to r3 | |
13584 | before the call by intervening code. */ | |
13585 | insn1 = bfd_get_32 (output_bfd, | |
13586 | contents + rel->r_offset - d_offset); | |
102890f0 | 13587 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13588 | { |
102890f0 | 13589 | /* IE */ |
b86ac8e3 | 13590 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
13591 | insn1 |= 58 << 26; /* ld */ |
13592 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13593 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13594 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13595 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13596 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13597 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13598 | else |
102890f0 AM |
13599 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13600 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13601 | } | |
13602 | else | |
13603 | { | |
13604 | /* LE */ | |
b86ac8e3 AM |
13605 | insn1 &= 0x1f << 21; |
13606 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
13607 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13608 | if (tls_gd == 0) | |
951fd09b | 13609 | { |
102890f0 | 13610 | /* Was an LD reloc. */ |
1d483afe AM |
13611 | if (toc_symndx) |
13612 | sec = local_sections[toc_symndx]; | |
13613 | for (r_symndx = 0; | |
13614 | r_symndx < symtab_hdr->sh_info; | |
13615 | r_symndx++) | |
13616 | if (local_sections[r_symndx] == sec) | |
13617 | break; | |
13618 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13619 | r_symndx = STN_UNDEF; |
102890f0 | 13620 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13621 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13622 | rel->r_addend -= (local_syms[r_symndx].st_value |
13623 | + sec->output_offset | |
13624 | + sec->output_section->vma); | |
951fd09b | 13625 | } |
102890f0 | 13626 | else if (toc_symndx != 0) |
3a71aa26 AM |
13627 | { |
13628 | r_symndx = toc_symndx; | |
13629 | rel->r_addend = toc_addend; | |
13630 | } | |
102890f0 AM |
13631 | r_type = R_PPC64_TPREL16_HA; |
13632 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13633 | if (offset != (bfd_vma) -1) |
13634 | { | |
13635 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13636 | R_PPC64_TPREL16_LO); | |
13637 | rel[1].r_offset = offset + d_offset; | |
13638 | rel[1].r_addend = rel->r_addend; | |
13639 | } | |
102890f0 | 13640 | } |
3a71aa26 AM |
13641 | bfd_put_32 (output_bfd, insn1, |
13642 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
13643 | if (offset != (bfd_vma) -1) |
13644 | { | |
13645 | insn3 = bfd_get_32 (output_bfd, | |
13646 | contents + offset + 4); | |
13647 | if (insn3 == NOP | |
13648 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13649 | { | |
13650 | rel[1].r_offset += 4; | |
13651 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13652 | insn2 = NOP; | |
13653 | } | |
13654 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13655 | } | |
13656 | if ((tls_mask & tls_gd) == 0 | |
13657 | && (tls_gd == 0 || toc_symndx != 0)) | |
13658 | { | |
13659 | /* We changed the symbol. Start over in order | |
13660 | to get h, sym, sec etc. right. */ | |
13661 | rel--; | |
13662 | continue; | |
13663 | } | |
13664 | } | |
13665 | break; | |
13666 | ||
13667 | case R_PPC64_TLSGD: | |
13668 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13669 | { | |
13670 | unsigned int insn2, insn3; | |
13671 | bfd_vma offset = rel->r_offset; | |
13672 | ||
13673 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13674 | { | |
13675 | /* IE */ | |
13676 | r_type = R_PPC64_NONE; | |
13677 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13678 | } | |
13679 | else | |
13680 | { | |
13681 | /* LE */ | |
13682 | if (toc_symndx != 0) | |
13683 | { | |
13684 | r_symndx = toc_symndx; | |
13685 | rel->r_addend = toc_addend; | |
13686 | } | |
13687 | r_type = R_PPC64_TPREL16_LO; | |
13688 | rel->r_offset = offset + d_offset; | |
13689 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13690 | } | |
13691 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13692 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13693 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13694 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
13695 | insn3 = bfd_get_32 (output_bfd, |
13696 | contents + offset + 4); | |
102890f0 AM |
13697 | if (insn3 == NOP |
13698 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13699 | { | |
727fc41e | 13700 | rel->r_offset += 4; |
3a71aa26 AM |
13701 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
13702 | insn2 = NOP; | |
102890f0 | 13703 | } |
102890f0 | 13704 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 13705 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 13706 | { |
102890f0 AM |
13707 | rel--; |
13708 | continue; | |
411e1bfb | 13709 | } |
411e1bfb | 13710 | } |
411e1bfb AM |
13711 | break; |
13712 | ||
727fc41e AM |
13713 | case R_PPC64_TLSLD: |
13714 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13715 | { | |
13716 | unsigned int insn2, insn3; | |
13717 | bfd_vma offset = rel->r_offset; | |
13718 | ||
13719 | if (toc_symndx) | |
13720 | sec = local_sections[toc_symndx]; | |
13721 | for (r_symndx = 0; | |
13722 | r_symndx < symtab_hdr->sh_info; | |
13723 | r_symndx++) | |
13724 | if (local_sections[r_symndx] == sec) | |
13725 | break; | |
13726 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13727 | r_symndx = STN_UNDEF; |
727fc41e | 13728 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13729 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13730 | rel->r_addend -= (local_syms[r_symndx].st_value |
13731 | + sec->output_offset | |
13732 | + sec->output_section->vma); | |
13733 | ||
13734 | r_type = R_PPC64_TPREL16_LO; | |
13735 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13736 | rel->r_offset = offset + d_offset; | |
13737 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13738 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13739 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
13740 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13741 | insn3 = bfd_get_32 (output_bfd, | |
13742 | contents + offset + 4); | |
13743 | if (insn3 == NOP | |
13744 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13745 | { | |
13746 | rel->r_offset += 4; | |
13747 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13748 | insn2 = NOP; | |
13749 | } | |
13750 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13751 | rel--; | |
13752 | continue; | |
13753 | } | |
13754 | break; | |
13755 | ||
411e1bfb | 13756 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13757 | if (rel + 1 < relend |
13758 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13759 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13760 | { |
951fd09b AM |
13761 | if ((tls_mask & TLS_GD) == 0) |
13762 | { | |
13763 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13764 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13765 | r_type = R_PPC64_TPREL64; | |
13766 | else | |
13767 | { | |
4ce794b7 | 13768 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13769 | r_type = R_PPC64_NONE; |
13770 | } | |
13771 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13772 | } | |
13773 | } | |
13774 | else | |
13775 | { | |
13776 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13777 | { |
4ce794b7 | 13778 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13779 | r_type = R_PPC64_NONE; |
951fd09b | 13780 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13781 | } |
411e1bfb AM |
13782 | } |
13783 | break; | |
13784 | ||
13785 | case R_PPC64_TPREL64: | |
951fd09b | 13786 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13787 | { |
13788 | r_type = R_PPC64_NONE; | |
13789 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13790 | } | |
13791 | break; | |
52a82034 AM |
13792 | |
13793 | case R_PPC64_REL16_HA: | |
13794 | /* If we are generating a non-PIC executable, edit | |
13795 | . 0: addis 2,12,.TOC.-0b@ha | |
13796 | . addi 2,2,.TOC.-0b@l | |
13797 | used by ELFv2 global entry points to set up r2, to | |
13798 | . lis 2,.TOC.@ha | |
13799 | . addi 2,2,.TOC.@l | |
13800 | if .TOC. is in range. */ | |
0e1862bb | 13801 | if (!bfd_link_pic (info) |
810d4e75 | 13802 | && !info->traditional_format |
52a82034 AM |
13803 | && h != NULL && &h->elf == htab->elf.hgot |
13804 | && rel + 1 < relend | |
13805 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
13806 | && rel[1].r_offset == rel->r_offset + 4 | |
13807 | && rel[1].r_addend == rel->r_addend + 4 | |
13808 | && relocation + 0x80008000 <= 0xffffffff) | |
13809 | { | |
13810 | unsigned int insn1, insn2; | |
13811 | bfd_vma offset = rel->r_offset - d_offset; | |
13812 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
13813 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
13814 | if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */ | |
13815 | && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */) | |
13816 | { | |
13817 | r_type = R_PPC64_ADDR16_HA; | |
13818 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13819 | rel->r_addend -= d_offset; | |
13820 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
13821 | rel[1].r_addend -= d_offset + 4; | |
13822 | bfd_put_32 (output_bfd, 0x3c400000, contents + offset); | |
13823 | } | |
13824 | } | |
13825 | break; | |
411e1bfb AM |
13826 | } |
13827 | ||
13828 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 13829 | insn = 0; |
b25116a9 AM |
13830 | max_br_offset = 1 << 25; |
13831 | addend = rel->r_addend; | |
bc30df16 | 13832 | reloc_dest = DEST_NORMAL; |
65f38f15 | 13833 | switch (r_type) |
5bd4f169 AM |
13834 | { |
13835 | default: | |
65f38f15 | 13836 | break; |
5bd4f169 | 13837 | |
3b421ab3 AM |
13838 | case R_PPC64_TOCSAVE: |
13839 | if (relocation + addend == (rel->r_offset | |
13840 | + input_section->output_offset | |
13841 | + input_section->output_section->vma) | |
13842 | && tocsave_find (htab, NO_INSERT, | |
13843 | &local_syms, rel, input_bfd)) | |
13844 | { | |
13845 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13846 | if (insn == NOP | |
13847 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
13848 | bfd_put_32 (input_bfd, |
13849 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
13850 | contents + rel->r_offset); |
13851 | } | |
13852 | break; | |
13853 | ||
65f38f15 AM |
13854 | /* Branch taken prediction relocations. */ |
13855 | case R_PPC64_ADDR14_BRTAKEN: | |
13856 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
13857 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
13858 | /* Fall thru. */ | |
65f38f15 | 13859 | |
86c76c7b | 13860 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
13861 | case R_PPC64_ADDR14_BRNTAKEN: |
13862 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
13863 | insn |= bfd_get_32 (output_bfd, |
13864 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 13865 | /* Fall thru. */ |
86c76c7b | 13866 | |
b25116a9 AM |
13867 | case R_PPC64_REL14: |
13868 | max_br_offset = 1 << 15; | |
13869 | /* Fall thru. */ | |
5bd4f169 | 13870 | |
65f38f15 | 13871 | case R_PPC64_REL24: |
ad8e1ba5 AM |
13872 | /* Calls to functions with a different TOC, such as calls to |
13873 | shared objects, need to alter the TOC pointer. This is | |
13874 | done using a linkage stub. A REL24 branching to these | |
13875 | linkage stubs needs to be followed by a nop, as the nop | |
13876 | will be replaced with an instruction to restore the TOC | |
13877 | base pointer. */ | |
8387904d | 13878 | fdh = h; |
b31867b6 AM |
13879 | if (h != NULL |
13880 | && h->oh != NULL | |
13881 | && h->oh->is_func_descriptor) | |
13882 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13883 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13884 | htab); | |
6abec6bc | 13885 | if (stub_entry != NULL |
ad8e1ba5 | 13886 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 13887 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
13888 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
13889 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 13890 | { |
b25116a9 | 13891 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13892 | |
ba8ca3e7 AM |
13893 | /* All of these stubs will modify r2, so there must be a |
13894 | branch and link followed by a nop. The nop is | |
13895 | replaced by an insn to restore r2. */ | |
eea6121a | 13896 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13897 | { |
ba8ca3e7 AM |
13898 | unsigned long br; |
13899 | ||
13900 | br = bfd_get_32 (input_bfd, | |
13901 | contents + rel->r_offset); | |
13902 | if ((br & 1) != 0) | |
41bd81ab | 13903 | { |
ba8ca3e7 AM |
13904 | unsigned long nop; |
13905 | ||
13906 | nop = bfd_get_32 (input_bfd, | |
13907 | contents + rel->r_offset + 4); | |
13908 | if (nop == NOP | |
13909 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 13910 | { |
ba8ca3e7 AM |
13911 | if (h != NULL |
13912 | && (h == htab->tls_get_addr_fd | |
13913 | || h == htab->tls_get_addr) | |
e7d1c40c | 13914 | && !htab->params->no_tls_get_addr_opt) |
ba8ca3e7 AM |
13915 | { |
13916 | /* Special stub used, leave nop alone. */ | |
13917 | } | |
13918 | else | |
a078d95a AM |
13919 | bfd_put_32 (input_bfd, |
13920 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
13921 | contents + rel->r_offset + 4); |
13922 | can_plt_call = TRUE; | |
a7f2871e | 13923 | } |
41bd81ab | 13924 | } |
5bd4f169 | 13925 | } |
721956f4 | 13926 | |
ba8ca3e7 | 13927 | if (!can_plt_call && h != NULL) |
721956f4 | 13928 | { |
ba8ca3e7 AM |
13929 | const char *name = h->elf.root.root.string; |
13930 | ||
13931 | if (*name == '.') | |
13932 | ++name; | |
13933 | ||
13934 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13935 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13936 | { |
ba8ca3e7 AM |
13937 | /* Allow crt1 branch to go via a toc adjusting |
13938 | stub. Other calls that never return could do | |
13939 | the same, if we could detect such. */ | |
b25116a9 | 13940 | can_plt_call = TRUE; |
6ab189d5 | 13941 | } |
ba8ca3e7 AM |
13942 | } |
13943 | ||
13944 | if (!can_plt_call) | |
13945 | { | |
13946 | /* g++ as of 20130507 emits self-calls without a | |
13947 | following nop. This is arguably wrong since we | |
13948 | have conflicting information. On the one hand a | |
13949 | global symbol and on the other a local call | |
13950 | sequence, but don't error for this special case. | |
13951 | It isn't possible to cheaply verify we have | |
13952 | exactly such a call. Allow all calls to the same | |
13953 | section. */ | |
13954 | asection *code_sec = sec; | |
13955 | ||
13956 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13957 | { |
ba8ca3e7 AM |
13958 | bfd_vma off = (relocation + addend |
13959 | - sec->output_section->vma | |
13960 | - sec->output_offset); | |
bc30df16 | 13961 | |
ba8ca3e7 | 13962 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13963 | } |
ba8ca3e7 AM |
13964 | if (code_sec == input_section) |
13965 | can_plt_call = TRUE; | |
13966 | } | |
13967 | ||
13968 | if (!can_plt_call) | |
13969 | { | |
4805fc55 AM |
13970 | if (stub_entry->stub_type == ppc_stub_plt_call |
13971 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13972 | info->callbacks->einfo | |
13973 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13974 | "recompile with -fPIC\n"), | |
13975 | input_bfd, input_section, rel->r_offset, sym_name); | |
13976 | else | |
13977 | info->callbacks->einfo | |
13978 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13979 | "(-mcmodel=small toc adjust stub)\n"), | |
13980 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
13981 | |
13982 | bfd_set_error (bfd_error_bad_value); | |
13983 | ret = FALSE; | |
721956f4 AM |
13984 | } |
13985 | ||
b25116a9 | 13986 | if (can_plt_call |
794e51c0 AM |
13987 | && (stub_entry->stub_type == ppc_stub_plt_call |
13988 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
13989 | unresolved_reloc = FALSE; |
13990 | } | |
13991 | ||
6abec6bc AM |
13992 | if ((stub_entry == NULL |
13993 | || stub_entry->stub_type == ppc_stub_long_branch | |
13994 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
13995 | && get_opd_info (sec) != NULL) |
13996 | { | |
13997 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
13998 | bfd_vma off = (relocation + addend |
13999 | - sec->output_section->vma | |
14000 | - sec->output_offset); | |
aef36ac1 | 14001 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14002 | if (dest != (bfd_vma) -1) |
14003 | { | |
14004 | relocation = dest; | |
14005 | addend = 0; | |
bc30df16 | 14006 | reloc_dest = DEST_OPD; |
8387904d AM |
14007 | } |
14008 | } | |
14009 | ||
b25116a9 AM |
14010 | /* If the branch is out of reach we ought to have a long |
14011 | branch stub. */ | |
14012 | from = (rel->r_offset | |
14013 | + input_section->output_offset | |
14014 | + input_section->output_section->vma); | |
14015 | ||
6911b7dc AM |
14016 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14017 | ? fdh->elf.other | |
14018 | : sym->st_other); | |
14019 | ||
6abec6bc AM |
14020 | if (stub_entry != NULL |
14021 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14022 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14023 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14024 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14025 | || (relocation + addend - from + max_br_offset | |
14026 | < 2 * max_br_offset))) | |
14027 | /* Don't use the stub if this branch is in range. */ | |
14028 | stub_entry = NULL; | |
b25116a9 AM |
14029 | |
14030 | if (stub_entry != NULL) | |
14031 | { | |
14032 | /* Munge up the value and addend so that we call the stub | |
14033 | rather than the procedure directly. */ | |
a4b6fadd AM |
14034 | asection *stub_sec = stub_entry->group->stub_sec; |
14035 | ||
14036 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14037 | relocation += (stub_sec->output_offset | |
14038 | + stub_sec->output_section->vma | |
14039 | + stub_sec->size - htab->sfpr->size | |
14040 | - htab->sfpr->output_offset | |
14041 | - htab->sfpr->output_section->vma); | |
14042 | else | |
14043 | relocation = (stub_entry->stub_offset | |
14044 | + stub_sec->output_offset | |
14045 | + stub_sec->output_section->vma); | |
b25116a9 | 14046 | addend = 0; |
bc30df16 | 14047 | reloc_dest = DEST_STUB; |
3b421ab3 | 14048 | |
794e51c0 AM |
14049 | if ((stub_entry->stub_type == ppc_stub_plt_call |
14050 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14051 | && (ALWAYS_EMIT_R2SAVE | |
14052 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
14053 | && rel + 1 < relend |
14054 | && rel[1].r_offset == rel->r_offset + 4 | |
14055 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14056 | relocation += 4; | |
b25116a9 AM |
14057 | } |
14058 | ||
14059 | if (insn != 0) | |
14060 | { | |
794e51c0 | 14061 | if (is_isa_v2) |
721956f4 | 14062 | { |
b25116a9 AM |
14063 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14064 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14065 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14066 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14067 | insn |= 0x02 << 21; | |
14068 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14069 | insn |= 0x08 << 21; | |
14070 | else | |
14071 | break; | |
14072 | } | |
14073 | else | |
14074 | { | |
14075 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14076 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14077 | insn ^= 0x01 << 21; |
721956f4 | 14078 | } |
b25116a9 AM |
14079 | |
14080 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 14081 | } |
e86ce104 | 14082 | |
06da1e8e AM |
14083 | /* NOP out calls to undefined weak functions. |
14084 | We can thus call a weak function without first | |
14085 | checking whether the function is defined. */ | |
b25116a9 | 14086 | else if (h != NULL |
039b3fef | 14087 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14088 | && h->elf.dynindx == -1 |
b25116a9 AM |
14089 | && r_type == R_PPC64_REL24 |
14090 | && relocation == 0 | |
4cc603a5 | 14091 | && addend == 0) |
e86ce104 | 14092 | { |
06da1e8e AM |
14093 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
14094 | continue; | |
e86ce104 | 14095 | } |
65f38f15 AM |
14096 | break; |
14097 | } | |
5bd4f169 | 14098 | |
65f38f15 | 14099 | /* Set `addend'. */ |
411e1bfb | 14100 | tls_type = 0; |
65f38f15 AM |
14101 | switch (r_type) |
14102 | { | |
14103 | default: | |
25f53a85 | 14104 | info->callbacks->einfo |
bc30df16 | 14105 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 14106 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 14107 | |
65f38f15 | 14108 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14109 | ret = FALSE; |
65f38f15 | 14110 | continue; |
5bd4f169 | 14111 | |
65f38f15 | 14112 | case R_PPC64_NONE: |
411e1bfb | 14113 | case R_PPC64_TLS: |
727fc41e AM |
14114 | case R_PPC64_TLSGD: |
14115 | case R_PPC64_TLSLD: | |
3b421ab3 | 14116 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14117 | case R_PPC64_GNU_VTINHERIT: |
14118 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 14119 | continue; |
5bd4f169 AM |
14120 | |
14121 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14122 | address in the GOT as relocation value instead of the | |
411e1bfb | 14123 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14124 | symbol and put the symbol value there. */ |
411e1bfb AM |
14125 | case R_PPC64_GOT_TLSGD16: |
14126 | case R_PPC64_GOT_TLSGD16_LO: | |
14127 | case R_PPC64_GOT_TLSGD16_HI: | |
14128 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14129 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14130 | goto dogot; |
14131 | ||
14132 | case R_PPC64_GOT_TLSLD16: | |
14133 | case R_PPC64_GOT_TLSLD16_LO: | |
14134 | case R_PPC64_GOT_TLSLD16_HI: | |
14135 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14136 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14137 | goto dogot; |
14138 | ||
14139 | case R_PPC64_GOT_TPREL16_DS: | |
14140 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14141 | case R_PPC64_GOT_TPREL16_HI: | |
14142 | case R_PPC64_GOT_TPREL16_HA: | |
14143 | tls_type = TLS_TLS | TLS_TPREL; | |
14144 | goto dogot; | |
14145 | ||
14146 | case R_PPC64_GOT_DTPREL16_DS: | |
14147 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14148 | case R_PPC64_GOT_DTPREL16_HI: | |
14149 | case R_PPC64_GOT_DTPREL16_HA: | |
14150 | tls_type = TLS_TLS | TLS_DTPREL; | |
14151 | goto dogot; | |
14152 | ||
65f38f15 AM |
14153 | case R_PPC64_GOT16: |
14154 | case R_PPC64_GOT16_LO: | |
14155 | case R_PPC64_GOT16_HI: | |
14156 | case R_PPC64_GOT16_HA: | |
14157 | case R_PPC64_GOT16_DS: | |
14158 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14159 | dogot: |
5bd4f169 AM |
14160 | { |
14161 | /* Relocation is to the entry for this symbol in the global | |
14162 | offset table. */ | |
e717da7e | 14163 | asection *got; |
d881513a | 14164 | bfd_vma *offp; |
5bd4f169 | 14165 | bfd_vma off; |
d881513a | 14166 | unsigned long indx = 0; |
927be08e | 14167 | struct got_entry *ent; |
65f38f15 | 14168 | |
d881513a AM |
14169 | if (tls_type == (TLS_TLS | TLS_LD) |
14170 | && (h == NULL | |
f5385ebf | 14171 | || !h->elf.def_dynamic)) |
927be08e | 14172 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 14173 | else |
5bd4f169 | 14174 | { |
5bd4f169 | 14175 | |
d881513a AM |
14176 | if (h != NULL) |
14177 | { | |
14178 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
0e1862bb | 14179 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), |
039b3fef | 14180 | &h->elf) |
0e1862bb | 14181 | || (bfd_link_pic (info) |
afe397ea | 14182 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
14183 | /* This is actually a static link, or it is a |
14184 | -Bsymbolic link and the symbol is defined | |
14185 | locally, or the symbol was forced to be local | |
14186 | because of a version file. */ | |
14187 | ; | |
14188 | else | |
14189 | { | |
14acf4dc | 14190 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 14191 | indx = h->elf.dynindx; |
d881513a AM |
14192 | unresolved_reloc = FALSE; |
14193 | } | |
039b3fef | 14194 | ent = h->elf.got.glist; |
d881513a | 14195 | } |
411e1bfb | 14196 | else |
5bd4f169 | 14197 | { |
d881513a AM |
14198 | if (local_got_ents == NULL) |
14199 | abort (); | |
14200 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 14201 | } |
d881513a AM |
14202 | |
14203 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 14204 | if (ent->addend == orig_rel.r_addend |
e717da7e | 14205 | && ent->owner == input_bfd |
d881513a AM |
14206 | && ent->tls_type == tls_type) |
14207 | break; | |
5bd4f169 | 14208 | } |
411e1bfb | 14209 | |
927be08e AM |
14210 | if (ent == NULL) |
14211 | abort (); | |
14212 | if (ent->is_indirect) | |
14213 | ent = ent->got.ent; | |
14214 | offp = &ent->got.offset; | |
14215 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
14216 | if (got == NULL) |
14217 | abort (); | |
14218 | ||
411e1bfb AM |
14219 | /* The offset must always be a multiple of 8. We use the |
14220 | least significant bit to record whether we have already | |
14221 | processed this entry. */ | |
d881513a | 14222 | off = *offp; |
411e1bfb AM |
14223 | if ((off & 1) != 0) |
14224 | off &= ~1; | |
5bd4f169 AM |
14225 | else |
14226 | { | |
411e1bfb AM |
14227 | /* Generate relocs for the dynamic linker, except in |
14228 | the case of TLSLD where we'll use one entry per | |
14229 | module. */ | |
25f23106 AM |
14230 | asection *relgot; |
14231 | bfd_boolean ifunc; | |
e717da7e | 14232 | |
d881513a | 14233 | *offp = off | 1; |
25f23106 AM |
14234 | relgot = NULL; |
14235 | ifunc = (h != NULL | |
14236 | ? h->elf.type == STT_GNU_IFUNC | |
14237 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 14238 | if (ifunc) |
33e44f2e | 14239 | relgot = htab->elf.irelplt; |
0e1862bb | 14240 | else if ((bfd_link_pic (info) || indx != 0) |
19e08130 AM |
14241 | && (h == NULL |
14242 | || (tls_type == (TLS_TLS | TLS_LD) | |
14243 | && !h->elf.def_dynamic) | |
14244 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
14245 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
14246 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 14247 | if (relgot != NULL) |
5bd4f169 | 14248 | { |
e717da7e AM |
14249 | outrel.r_offset = (got->output_section->vma |
14250 | + got->output_offset | |
411e1bfb | 14251 | + off); |
4cc603a5 | 14252 | outrel.r_addend = addend; |
d881513a | 14253 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 14254 | { |
411e1bfb | 14255 | outrel.r_addend = 0; |
e515b051 | 14256 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
14257 | if (tls_type == (TLS_TLS | TLS_GD)) |
14258 | { | |
e717da7e AM |
14259 | loc = relgot->contents; |
14260 | loc += (relgot->reloc_count++ | |
d881513a AM |
14261 | * sizeof (Elf64_External_Rela)); |
14262 | bfd_elf64_swap_reloca_out (output_bfd, | |
14263 | &outrel, loc); | |
e515b051 | 14264 | outrel.r_offset += 8; |
4cc603a5 | 14265 | outrel.r_addend = addend; |
d881513a AM |
14266 | outrel.r_info |
14267 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 14268 | } |
411e1bfb | 14269 | } |
951fd09b | 14270 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 14271 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 14272 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14273 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
14274 | else if (indx != 0) |
14275 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
14276 | else | |
81407a69 | 14277 | { |
25f23106 AM |
14278 | if (ifunc) |
14279 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14280 | else | |
14281 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
14282 | |
14283 | /* Write the .got section contents for the sake | |
14284 | of prelink. */ | |
e717da7e | 14285 | loc = got->contents + off; |
23fbd6fa JJ |
14286 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
14287 | loc); | |
81407a69 | 14288 | } |
81407a69 AM |
14289 | |
14290 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
14291 | { |
14292 | outrel.r_addend += relocation; | |
14293 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
14294 | { |
14295 | if (htab->elf.tls_sec == NULL) | |
14296 | outrel.r_addend = 0; | |
14297 | else | |
14298 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
14299 | } | |
e515b051 | 14300 | } |
e717da7e AM |
14301 | loc = relgot->contents; |
14302 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
14303 | * sizeof (Elf64_External_Rela)); |
14304 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
14305 | } | |
14306 | ||
ad8e1ba5 | 14307 | /* Init the .got section contents here if we're not |
81407a69 | 14308 | emitting a reloc. */ |
d881513a | 14309 | else |
411e1bfb | 14310 | { |
4cc603a5 | 14311 | relocation += addend; |
7b609f53 AM |
14312 | if (tls_type == (TLS_TLS | TLS_LD)) |
14313 | relocation = 1; | |
14314 | else if (tls_type != 0) | |
411e1bfb | 14315 | { |
989f9879 AM |
14316 | if (htab->elf.tls_sec == NULL) |
14317 | relocation = 0; | |
14318 | else | |
14319 | { | |
14320 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
14321 | if (tls_type == (TLS_TLS | TLS_TPREL)) | |
14322 | relocation += DTP_OFFSET - TP_OFFSET; | |
14323 | } | |
5bd4f169 | 14324 | |
7b609f53 AM |
14325 | if (tls_type == (TLS_TLS | TLS_GD)) |
14326 | { | |
14327 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14328 | got->contents + off + 8); |
7b609f53 AM |
14329 | relocation = 1; |
14330 | } | |
411e1bfb | 14331 | } |
7b609f53 | 14332 | |
411e1bfb | 14333 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 14334 | got->contents + off); |
5bd4f169 AM |
14335 | } |
14336 | } | |
14337 | ||
65f38f15 AM |
14338 | if (off >= (bfd_vma) -2) |
14339 | abort (); | |
14340 | ||
bf102f86 | 14341 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 14342 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 14343 | } |
65f38f15 AM |
14344 | break; |
14345 | ||
14346 | case R_PPC64_PLT16_HA: | |
14347 | case R_PPC64_PLT16_HI: | |
14348 | case R_PPC64_PLT16_LO: | |
14349 | case R_PPC64_PLT32: | |
14350 | case R_PPC64_PLT64: | |
14351 | /* Relocation is to the entry for this symbol in the | |
14352 | procedure linkage table. */ | |
14353 | ||
14354 | /* Resolve a PLT reloc against a local symbol directly, | |
14355 | without using the procedure linkage table. */ | |
14356 | if (h == NULL) | |
14357 | break; | |
14358 | ||
411e1bfb AM |
14359 | /* It's possible that we didn't make a PLT entry for this |
14360 | symbol. This happens when statically linking PIC code, | |
14361 | or when using -Bsymbolic. Go find a match if there is a | |
14362 | PLT entry. */ | |
33e44f2e | 14363 | if (htab->elf.splt != NULL) |
65f38f15 | 14364 | { |
411e1bfb | 14365 | struct plt_entry *ent; |
039b3fef | 14366 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
a345bc8d AM |
14367 | if (ent->plt.offset != (bfd_vma) -1 |
14368 | && ent->addend == orig_rel.r_addend) | |
411e1bfb | 14369 | { |
33e44f2e AM |
14370 | relocation = (htab->elf.splt->output_section->vma |
14371 | + htab->elf.splt->output_offset | |
411e1bfb AM |
14372 | + ent->plt.offset); |
14373 | unresolved_reloc = FALSE; | |
a345bc8d | 14374 | break; |
411e1bfb | 14375 | } |
65f38f15 | 14376 | } |
65f38f15 | 14377 | break; |
5bd4f169 | 14378 | |
0b13192e AM |
14379 | case R_PPC64_TOC: |
14380 | /* Relocation value is TOC base. */ | |
14381 | relocation = TOCstart; | |
cf35638d | 14382 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 14383 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
14384 | else if (unresolved_reloc) |
14385 | ; | |
6f20ed8a AM |
14386 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
14387 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
14388 | else |
14389 | unresolved_reloc = TRUE; | |
ab96bf03 | 14390 | goto dodyn; |
0b13192e | 14391 | |
5bd4f169 AM |
14392 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14393 | which is the address of the start of the TOC plus 0x8000. | |
14394 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14395 | in this order. */ | |
65f38f15 AM |
14396 | case R_PPC64_TOC16: |
14397 | case R_PPC64_TOC16_LO: | |
14398 | case R_PPC64_TOC16_HI: | |
14399 | case R_PPC64_TOC16_DS: | |
14400 | case R_PPC64_TOC16_LO_DS: | |
14401 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 14402 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
14403 | break; |
14404 | ||
14405 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14406 | case R_PPC64_SECTOFF: |
14407 | case R_PPC64_SECTOFF_LO: | |
14408 | case R_PPC64_SECTOFF_HI: | |
14409 | case R_PPC64_SECTOFF_DS: | |
14410 | case R_PPC64_SECTOFF_LO_DS: | |
14411 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14412 | if (sec != NULL) |
65f38f15 | 14413 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14414 | break; |
14415 | ||
25f23106 AM |
14416 | case R_PPC64_REL16: |
14417 | case R_PPC64_REL16_LO: | |
14418 | case R_PPC64_REL16_HI: | |
14419 | case R_PPC64_REL16_HA: | |
14420 | break; | |
14421 | ||
721956f4 AM |
14422 | case R_PPC64_REL14: |
14423 | case R_PPC64_REL14_BRNTAKEN: | |
14424 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14425 | case R_PPC64_REL24: |
14426 | break; | |
14427 | ||
411e1bfb AM |
14428 | case R_PPC64_TPREL16: |
14429 | case R_PPC64_TPREL16_LO: | |
14430 | case R_PPC64_TPREL16_HI: | |
14431 | case R_PPC64_TPREL16_HA: | |
14432 | case R_PPC64_TPREL16_DS: | |
14433 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14434 | case R_PPC64_TPREL16_HIGH: |
14435 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14436 | case R_PPC64_TPREL16_HIGHER: |
14437 | case R_PPC64_TPREL16_HIGHERA: | |
14438 | case R_PPC64_TPREL16_HIGHEST: | |
14439 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14440 | if (h != NULL |
14441 | && h->elf.root.type == bfd_link_hash_undefweak | |
14442 | && h->elf.dynindx == -1) | |
14443 | { | |
14444 | /* Make this relocation against an undefined weak symbol | |
14445 | resolve to zero. This is really just a tweak, since | |
14446 | code using weak externs ought to check that they are | |
14447 | defined before using them. */ | |
14448 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14449 | ||
14450 | insn = bfd_get_32 (output_bfd, p); | |
14451 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
14452 | if (insn != 0) | |
14453 | bfd_put_32 (output_bfd, insn, p); | |
14454 | break; | |
14455 | } | |
989f9879 AM |
14456 | if (htab->elf.tls_sec != NULL) |
14457 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
0e1862bb | 14458 | if (bfd_link_pic (info)) |
411e1bfb AM |
14459 | /* The TPREL16 relocs shouldn't really be used in shared |
14460 | libs as they will result in DT_TEXTREL being set, but | |
14461 | support them anyway. */ | |
14462 | goto dodyn; | |
14463 | break; | |
14464 | ||
14465 | case R_PPC64_DTPREL16: | |
14466 | case R_PPC64_DTPREL16_LO: | |
14467 | case R_PPC64_DTPREL16_HI: | |
14468 | case R_PPC64_DTPREL16_HA: | |
14469 | case R_PPC64_DTPREL16_DS: | |
14470 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14471 | case R_PPC64_DTPREL16_HIGH: |
14472 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14473 | case R_PPC64_DTPREL16_HIGHER: |
14474 | case R_PPC64_DTPREL16_HIGHERA: | |
14475 | case R_PPC64_DTPREL16_HIGHEST: | |
14476 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
14477 | if (htab->elf.tls_sec != NULL) |
14478 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14479 | break; |
14480 | ||
45965137 AM |
14481 | case R_PPC64_ADDR64_LOCAL: |
14482 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14483 | ? h->elf.other | |
14484 | : sym->st_other); | |
14485 | break; | |
14486 | ||
e515b051 AM |
14487 | case R_PPC64_DTPMOD64: |
14488 | relocation = 1; | |
14489 | addend = 0; | |
14490 | goto dodyn; | |
14491 | ||
411e1bfb | 14492 | case R_PPC64_TPREL64: |
989f9879 AM |
14493 | if (htab->elf.tls_sec != NULL) |
14494 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
14495 | goto dodyn; |
14496 | ||
14497 | case R_PPC64_DTPREL64: | |
989f9879 AM |
14498 | if (htab->elf.tls_sec != NULL) |
14499 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
14500 | /* Fall thru */ |
14501 | ||
65f38f15 AM |
14502 | /* Relocations that may need to be propagated if this is a |
14503 | dynamic object. */ | |
04c9666a | 14504 | case R_PPC64_REL30: |
65f38f15 AM |
14505 | case R_PPC64_REL32: |
14506 | case R_PPC64_REL64: | |
14507 | case R_PPC64_ADDR14: | |
14508 | case R_PPC64_ADDR14_BRNTAKEN: | |
14509 | case R_PPC64_ADDR14_BRTAKEN: | |
14510 | case R_PPC64_ADDR16: | |
14511 | case R_PPC64_ADDR16_DS: | |
14512 | case R_PPC64_ADDR16_HA: | |
14513 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14514 | case R_PPC64_ADDR16_HIGH: |
14515 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14516 | case R_PPC64_ADDR16_HIGHER: |
14517 | case R_PPC64_ADDR16_HIGHERA: | |
14518 | case R_PPC64_ADDR16_HIGHEST: | |
14519 | case R_PPC64_ADDR16_HIGHESTA: | |
14520 | case R_PPC64_ADDR16_LO: | |
14521 | case R_PPC64_ADDR16_LO_DS: | |
14522 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14523 | case R_PPC64_ADDR32: |
14524 | case R_PPC64_ADDR64: | |
14525 | case R_PPC64_UADDR16: | |
14526 | case R_PPC64_UADDR32: | |
14527 | case R_PPC64_UADDR64: | |
411e1bfb | 14528 | dodyn: |
5d1634d7 | 14529 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14530 | break; |
14531 | ||
41bd81ab AM |
14532 | if (NO_OPD_RELOCS && is_opd) |
14533 | break; | |
14534 | ||
0e1862bb | 14535 | if ((bfd_link_pic (info) |
4e795f50 | 14536 | && (h == NULL |
039b3fef AM |
14537 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
14538 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 14539 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 14540 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 | 14541 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 14542 | && !bfd_link_pic (info) |
65f38f15 | 14543 | && h != NULL |
039b3fef | 14544 | && h->elf.dynindx != -1 |
f5385ebf | 14545 | && !h->elf.non_got_ref |
25f23106 | 14546 | && !h->elf.def_regular) |
0e1862bb | 14547 | || (!bfd_link_pic (info) |
25f23106 AM |
14548 | && (h != NULL |
14549 | ? h->elf.type == STT_GNU_IFUNC | |
14550 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 14551 | { |
b34976b6 | 14552 | bfd_boolean skip, relocate; |
65f38f15 | 14553 | asection *sreloc; |
1cf1f670 | 14554 | bfd_vma out_off; |
65f38f15 AM |
14555 | |
14556 | /* When generating a dynamic object, these relocations | |
14557 | are copied into the output file to be resolved at run | |
14558 | time. */ | |
14559 | ||
b34976b6 AM |
14560 | skip = FALSE; |
14561 | relocate = FALSE; | |
65f38f15 | 14562 | |
1cf1f670 AM |
14563 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14564 | input_section, rel->r_offset); | |
14565 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14566 | skip = TRUE; |
1cf1f670 | 14567 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14568 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14569 | out_off += (input_section->output_section->vma |
14570 | + input_section->output_offset); | |
14571 | outrel.r_offset = out_off; | |
411e1bfb | 14572 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14573 | |
1cf1f670 AM |
14574 | /* Optimize unaligned reloc use. */ |
14575 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14576 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14577 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14578 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14579 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14580 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14581 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14582 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14583 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14584 | ||
65f38f15 | 14585 | if (skip) |
0bb2d96a | 14586 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14587 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14588 | && !is_opd |
14589 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
14590 | { |
14591 | BFD_ASSERT (h->elf.dynindx != -1); | |
14592 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
14593 | } | |
65f38f15 AM |
14594 | else |
14595 | { | |
41bd81ab AM |
14596 | /* This symbol is local, or marked to become local, |
14597 | or this is an opd section reloc which must point | |
14598 | at a local function. */ | |
65f38f15 | 14599 | outrel.r_addend += relocation; |
e86ce104 | 14600 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14601 | { |
3fad3c7c | 14602 | if (is_opd && h != NULL) |
afbe61cf AM |
14603 | { |
14604 | /* Lie about opd entries. This case occurs | |
14605 | when building shared libraries and we | |
14606 | reference a function in another shared | |
3fad3c7c AM |
14607 | lib. The same thing happens for a weak |
14608 | definition in an application that's | |
14609 | overridden by a strong definition in a | |
14610 | shared lib. (I believe this is a generic | |
14611 | bug in binutils handling of weak syms.) | |
14612 | In these cases we won't use the opd | |
1e2f5b6e | 14613 | entry in this lib. */ |
b34976b6 | 14614 | unresolved_reloc = FALSE; |
afbe61cf | 14615 | } |
25f23106 AM |
14616 | if (!is_opd |
14617 | && r_type == R_PPC64_ADDR64 | |
14618 | && (h != NULL | |
14619 | ? h->elf.type == STT_GNU_IFUNC | |
14620 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14621 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14622 | else | |
14623 | { | |
14624 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14625 | |
25f23106 AM |
14626 | /* We need to relocate .opd contents for ld.so. |
14627 | Prelink also wants simple and consistent rules | |
14628 | for relocs. This make all RELATIVE relocs have | |
14629 | *r_offset equal to r_addend. */ | |
14630 | relocate = TRUE; | |
14631 | } | |
65f38f15 AM |
14632 | } |
14633 | else | |
14634 | { | |
14635 | long indx = 0; | |
14636 | ||
25f23106 AM |
14637 | if (h != NULL |
14638 | ? h->elf.type == STT_GNU_IFUNC | |
14639 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14640 | { | |
25f53a85 | 14641 | info->callbacks->einfo |
bc30df16 AM |
14642 | (_("%P: %H: %s for indirect " |
14643 | "function `%T' unsupported\n"), | |
25f53a85 | 14644 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14645 | ppc64_elf_howto_table[r_type]->name, |
14646 | sym_name); | |
14647 | ret = FALSE; | |
14648 | } | |
cf35638d | 14649 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14650 | ; |
14651 | else if (sec == NULL || sec->owner == NULL) | |
14652 | { | |
14653 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14654 | return FALSE; |
65f38f15 AM |
14655 | } |
14656 | else | |
14657 | { | |
14658 | asection *osec; | |
14659 | ||
14660 | osec = sec->output_section; | |
14661 | indx = elf_section_data (osec)->dynindx; | |
14662 | ||
74541ad4 AM |
14663 | if (indx == 0) |
14664 | { | |
14665 | if ((osec->flags & SEC_READONLY) == 0 | |
14666 | && htab->elf.data_index_section != NULL) | |
14667 | osec = htab->elf.data_index_section; | |
14668 | else | |
14669 | osec = htab->elf.text_index_section; | |
14670 | indx = elf_section_data (osec)->dynindx; | |
14671 | } | |
14672 | BFD_ASSERT (indx != 0); | |
14673 | ||
65f38f15 AM |
14674 | /* We are turning this relocation into one |
14675 | against a section symbol, so subtract out | |
14676 | the output section's address but not the | |
14677 | offset of the input section in the output | |
14678 | section. */ | |
14679 | outrel.r_addend -= osec->vma; | |
14680 | } | |
14681 | ||
14682 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14683 | } | |
14684 | } | |
14685 | ||
14686 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14687 | if (h != NULL |
14688 | ? h->elf.type == STT_GNU_IFUNC | |
14689 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
33e44f2e | 14690 | sreloc = htab->elf.irelplt; |
65f38f15 AM |
14691 | if (sreloc == NULL) |
14692 | abort (); | |
14693 | ||
dfbb6ac9 AM |
14694 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14695 | >= sreloc->size) | |
14696 | abort (); | |
947216bf AM |
14697 | loc = sreloc->contents; |
14698 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14699 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14700 | ||
14701 | /* If this reloc is against an external symbol, it will | |
14702 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14703 | anything now. However, for the sake of prelink ensure |
14704 | that the section contents are a known value. */ | |
65f38f15 | 14705 | if (! relocate) |
81407a69 AM |
14706 | { |
14707 | unresolved_reloc = FALSE; | |
14708 | /* The value chosen here is quite arbitrary as ld.so | |
14709 | ignores section contents except for the special | |
14710 | case of .opd where the contents might be accessed | |
14711 | before relocation. Choose zero, as that won't | |
14712 | cause reloc overflow. */ | |
14713 | relocation = 0; | |
14714 | addend = 0; | |
14715 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14716 | to improve backward compatibility with older | |
14717 | versions of ld. */ | |
14718 | if (r_type == R_PPC64_ADDR64) | |
14719 | addend = outrel.r_addend; | |
14720 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14721 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
14722 | addend = (input_section->output_section->vma |
14723 | + input_section->output_offset | |
14724 | + rel->r_offset); | |
81407a69 | 14725 | } |
65f38f15 | 14726 | } |
5bd4f169 AM |
14727 | break; |
14728 | ||
65f38f15 AM |
14729 | case R_PPC64_COPY: |
14730 | case R_PPC64_GLOB_DAT: | |
14731 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14732 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14733 | case R_PPC64_RELATIVE: |
14734 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14735 | files. */ | |
ae9a127f | 14736 | /* Fall through. */ |
65f38f15 AM |
14737 | |
14738 | case R_PPC64_PLTGOT16: | |
14739 | case R_PPC64_PLTGOT16_DS: | |
14740 | case R_PPC64_PLTGOT16_HA: | |
14741 | case R_PPC64_PLTGOT16_HI: | |
14742 | case R_PPC64_PLTGOT16_LO: | |
14743 | case R_PPC64_PLTGOT16_LO_DS: | |
14744 | case R_PPC64_PLTREL32: | |
14745 | case R_PPC64_PLTREL64: | |
14746 | /* These ones haven't been implemented yet. */ | |
14747 | ||
25f53a85 | 14748 | info->callbacks->einfo |
bc30df16 | 14749 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 14750 | input_bfd, |
4ce794b7 | 14751 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14752 | |
14753 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14754 | ret = FALSE; |
5bd4f169 | 14755 | continue; |
65f38f15 | 14756 | } |
5bd4f169 | 14757 | |
67f0cbdb AM |
14758 | /* Multi-instruction sequences that access the TOC can be |
14759 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
14760 | to nop; addi rb,r2,x; */ | |
14761 | switch (r_type) | |
14762 | { | |
14763 | default: | |
14764 | break; | |
14765 | ||
14766 | case R_PPC64_GOT_TLSLD16_HI: | |
14767 | case R_PPC64_GOT_TLSGD16_HI: | |
14768 | case R_PPC64_GOT_TPREL16_HI: | |
14769 | case R_PPC64_GOT_DTPREL16_HI: | |
14770 | case R_PPC64_GOT16_HI: | |
14771 | case R_PPC64_TOC16_HI: | |
14772 | /* These relocs would only be useful if building up an | |
14773 | offset to later add to r2, perhaps in an indexed | |
14774 | addressing mode instruction. Don't try to optimize. | |
14775 | Unfortunately, the possibility of someone building up an | |
14776 | offset like this or even with the HA relocs, means that | |
14777 | we need to check the high insn when optimizing the low | |
14778 | insn. */ | |
14779 | break; | |
14780 | ||
14781 | case R_PPC64_GOT_TLSLD16_HA: | |
14782 | case R_PPC64_GOT_TLSGD16_HA: | |
14783 | case R_PPC64_GOT_TPREL16_HA: | |
14784 | case R_PPC64_GOT_DTPREL16_HA: | |
14785 | case R_PPC64_GOT16_HA: | |
14786 | case R_PPC64_TOC16_HA: | |
98528052 | 14787 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14788 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
14789 | { |
14790 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14791 | bfd_put_32 (input_bfd, NOP, p); | |
14792 | } | |
67f0cbdb AM |
14793 | break; |
14794 | ||
14795 | case R_PPC64_GOT_TLSLD16_LO: | |
14796 | case R_PPC64_GOT_TLSGD16_LO: | |
14797 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14798 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14799 | case R_PPC64_GOT16_LO: | |
14800 | case R_PPC64_GOT16_LO_DS: | |
14801 | case R_PPC64_TOC16_LO: | |
14802 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 14803 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14804 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
14805 | { |
14806 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14807 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
14808 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
14809 | { | |
14810 | /* Transform addic to addi when we change reg. */ | |
14811 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
14812 | insn |= (14u << 26) | (2 << 16); | |
14813 | } | |
14814 | else | |
67f0cbdb | 14815 | { |
98528052 AM |
14816 | insn &= ~(0x1f << 16); |
14817 | insn |= 2 << 16; | |
67f0cbdb | 14818 | } |
560c8763 | 14819 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
14820 | } |
14821 | break; | |
14822 | } | |
14823 | ||
65f38f15 | 14824 | /* Do any further special processing. */ |
b80eed39 | 14825 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 AM |
14826 | switch (r_type) |
14827 | { | |
14828 | default: | |
14829 | break; | |
14830 | ||
25f23106 | 14831 | case R_PPC64_REL16_HA: |
f9c6b907 AM |
14832 | case R_PPC64_ADDR16_HA: |
14833 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14834 | case R_PPC64_ADDR16_HIGHERA: |
14835 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
14836 | case R_PPC64_TOC16_HA: |
14837 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 14838 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 14839 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 14840 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 14841 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
14842 | case R_PPC64_DTPREL16_HA: |
14843 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 14844 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 14845 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
14846 | /* It's just possible that this symbol is a weak symbol |
14847 | that's not actually defined anywhere. In that case, | |
14848 | 'sec' would be NULL, and we should leave the symbol | |
14849 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
14850 | if (sec == NULL) |
14851 | break; | |
14852 | /* Fall thru */ | |
14853 | ||
14854 | case R_PPC64_GOT16_HA: | |
14855 | case R_PPC64_PLTGOT16_HA: | |
14856 | case R_PPC64_PLT16_HA: | |
14857 | case R_PPC64_GOT_TLSGD16_HA: | |
14858 | case R_PPC64_GOT_TLSLD16_HA: | |
14859 | case R_PPC64_GOT_TPREL16_HA: | |
14860 | case R_PPC64_GOT_DTPREL16_HA: | |
14861 | /* Add 0x10000 if sign bit in 0:15 is set. | |
14862 | Bits 0:15 are not used. */ | |
14863 | addend += 0x8000; | |
65f38f15 AM |
14864 | break; |
14865 | ||
14866 | case R_PPC64_ADDR16_DS: | |
14867 | case R_PPC64_ADDR16_LO_DS: | |
14868 | case R_PPC64_GOT16_DS: | |
14869 | case R_PPC64_GOT16_LO_DS: | |
14870 | case R_PPC64_PLT16_LO_DS: | |
14871 | case R_PPC64_SECTOFF_DS: | |
14872 | case R_PPC64_SECTOFF_LO_DS: | |
14873 | case R_PPC64_TOC16_DS: | |
14874 | case R_PPC64_TOC16_LO_DS: | |
14875 | case R_PPC64_PLTGOT16_DS: | |
14876 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
14877 | case R_PPC64_GOT_TPREL16_DS: |
14878 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14879 | case R_PPC64_GOT_DTPREL16_DS: | |
14880 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14881 | case R_PPC64_TPREL16_DS: | |
14882 | case R_PPC64_TPREL16_LO_DS: | |
14883 | case R_PPC64_DTPREL16_DS: | |
14884 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
14885 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
14886 | mask = 3; | |
14887 | /* If this reloc is against an lq insn, then the value must be | |
14888 | a multiple of 16. This is somewhat of a hack, but the | |
14889 | "correct" way to do this by defining _DQ forms of all the | |
14890 | _DS relocs bloats all reloc switches in this file. It | |
14891 | doesn't seem to make much sense to use any of these relocs | |
14892 | in data, so testing the insn should be safe. */ | |
494dac0c | 14893 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
14894 | mask = 15; |
14895 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 14896 | { |
25f53a85 | 14897 | info->callbacks->einfo |
8de848d8 | 14898 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 14899 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 14900 | howto->name, |
adadcc0c | 14901 | mask + 1); |
65f38f15 | 14902 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14903 | ret = FALSE; |
65f38f15 AM |
14904 | continue; |
14905 | } | |
14906 | break; | |
5bd4f169 AM |
14907 | } |
14908 | ||
239e1f3a AM |
14909 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
14910 | because such sections are not SEC_ALLOC and thus ld.so will | |
14911 | not process them. */ | |
65f38f15 | 14912 | if (unresolved_reloc |
239e1f3a | 14913 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
14914 | && h->elf.def_dynamic) |
14915 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
14916 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 14917 | { |
25f53a85 | 14918 | info->callbacks->einfo |
bc30df16 | 14919 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 14920 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 14921 | howto->name, |
039b3fef | 14922 | h->elf.root.root.string); |
b34976b6 | 14923 | ret = FALSE; |
9c07fe7c | 14924 | } |
5bd4f169 | 14925 | |
b80eed39 AM |
14926 | /* 16-bit fields in insns mostly have signed values, but a |
14927 | few insns have 16-bit unsigned values. Really, we should | |
14928 | have different reloc types. */ | |
14929 | if (howto->complain_on_overflow != complain_overflow_dont | |
14930 | && howto->dst_mask == 0xffff | |
14931 | && (input_section->flags & SEC_CODE) != 0) | |
14932 | { | |
14933 | enum complain_overflow complain = complain_overflow_signed; | |
14934 | ||
14935 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
14936 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
14937 | complain = complain_overflow_bitfield; | |
14938 | else if (howto->rightshift == 0 | |
14939 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
14940 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
14941 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
14942 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
14943 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
14944 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
14945 | complain = complain_overflow_unsigned; |
14946 | if (howto->complain_on_overflow != complain) | |
14947 | { | |
14948 | alt_howto = *howto; | |
14949 | alt_howto.complain_on_overflow = complain; | |
14950 | howto = &alt_howto; | |
14951 | } | |
14952 | } | |
14953 | ||
14954 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
14955 | rel->r_offset, relocation, addend); | |
5bd4f169 | 14956 | |
ef60b7ff | 14957 | if (r != bfd_reloc_ok) |
5bd4f169 | 14958 | { |
bc30df16 | 14959 | char *more_info = NULL; |
b80eed39 | 14960 | const char *reloc_name = howto->name; |
bc30df16 AM |
14961 | |
14962 | if (reloc_dest != DEST_NORMAL) | |
14963 | { | |
14964 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
14965 | if (more_info != NULL) | |
14966 | { | |
14967 | strcpy (more_info, reloc_name); | |
14968 | strcat (more_info, (reloc_dest == DEST_OPD | |
14969 | ? " (OPD)" : " (stub)")); | |
14970 | reloc_name = more_info; | |
14971 | } | |
14972 | } | |
14973 | ||
cd27b276 | 14974 | if (r == bfd_reloc_overflow) |
5bd4f169 | 14975 | { |
8131c122 AM |
14976 | /* On code like "if (foo) foo();" don't report overflow |
14977 | on a branch to zero when foo is undefined. */ | |
14978 | if (!warned | |
14979 | && (reloc_dest == DEST_STUB | |
14980 | || !(h != NULL | |
14981 | && (h->elf.root.type == bfd_link_hash_undefweak | |
14982 | || h->elf.root.type == bfd_link_hash_undefined) | |
14983 | && is_branch_reloc (r_type)))) | |
5bd4f169 | 14984 | { |
8131c122 AM |
14985 | if (!((*info->callbacks->reloc_overflow) |
14986 | (info, &h->elf.root, sym_name, | |
14987 | reloc_name, orig_rel.r_addend, | |
14988 | input_bfd, input_section, rel->r_offset))) | |
14989 | return FALSE; | |
5bd4f169 | 14990 | } |
ef60b7ff AM |
14991 | } |
14992 | else | |
14993 | { | |
25f53a85 | 14994 | info->callbacks->einfo |
bc30df16 | 14995 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 14996 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 14997 | reloc_name, sym_name, (int) r); |
b34976b6 | 14998 | ret = FALSE; |
ef60b7ff | 14999 | } |
bc30df16 AM |
15000 | if (more_info != NULL) |
15001 | free (more_info); | |
5bd4f169 | 15002 | } |
5bd4f169 AM |
15003 | } |
15004 | ||
645ea6a9 AM |
15005 | /* If we're emitting relocations, then shortly after this function |
15006 | returns, reloc offsets and addends for this section will be | |
15007 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15008 | file rather than the input. Save a copy of the relocs for |
15009 | opd_entry_value. */ | |
0e1862bb | 15010 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15011 | { |
15012 | bfd_size_type amt; | |
15013 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15014 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
15015 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
15016 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
15017 | if (rel == NULL) |
15018 | return FALSE; | |
15019 | memcpy (rel, relocs, amt); | |
15020 | } | |
5bd4f169 AM |
15021 | return ret; |
15022 | } | |
15023 | ||
754021d0 AM |
15024 | /* Adjust the value of any local symbols in opd sections. */ |
15025 | ||
6e0b88f1 | 15026 | static int |
754021d0 AM |
15027 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
15028 | const char *name ATTRIBUTE_UNUSED, | |
15029 | Elf_Internal_Sym *elfsym, | |
15030 | asection *input_sec, | |
15031 | struct elf_link_hash_entry *h) | |
15032 | { | |
74f0fb50 AM |
15033 | struct _opd_sec_data *opd; |
15034 | long adjust; | |
754021d0 AM |
15035 | bfd_vma value; |
15036 | ||
4025353c | 15037 | if (h != NULL) |
6e0b88f1 | 15038 | return 1; |
4025353c | 15039 | |
74f0fb50 AM |
15040 | opd = get_opd_info (input_sec); |
15041 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 15042 | return 1; |
754021d0 AM |
15043 | |
15044 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 15045 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
15046 | value -= input_sec->output_section->vma; |
15047 | ||
51aecdc5 | 15048 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 15049 | if (adjust == -1) |
6e0b88f1 AM |
15050 | return 2; |
15051 | ||
15052 | elfsym->st_value += adjust; | |
15053 | return 1; | |
754021d0 AM |
15054 | } |
15055 | ||
5bd4f169 AM |
15056 | /* Finish up dynamic symbol handling. We set the contents of various |
15057 | dynamic sections here. */ | |
15058 | ||
b34976b6 | 15059 | static bfd_boolean |
4ce794b7 AM |
15060 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
15061 | struct bfd_link_info *info, | |
15062 | struct elf_link_hash_entry *h, | |
ab6dce23 | 15063 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 15064 | { |
65f38f15 | 15065 | struct ppc_link_hash_table *htab; |
8387904d AM |
15066 | struct plt_entry *ent; |
15067 | Elf_Internal_Rela rela; | |
15068 | bfd_byte *loc; | |
5bd4f169 | 15069 | |
65f38f15 | 15070 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15071 | if (htab == NULL) |
15072 | return FALSE; | |
5bd4f169 | 15073 | |
8387904d AM |
15074 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
15075 | if (ent->plt.offset != (bfd_vma) -1) | |
15076 | { | |
15077 | /* This symbol has an entry in the procedure linkage | |
15078 | table. Set it up. */ | |
e054468f AM |
15079 | if (!htab->elf.dynamic_sections_created |
15080 | || h->dynindx == -1) | |
15081 | { | |
15082 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
15083 | && h->def_regular | |
15084 | && (h->root.type == bfd_link_hash_defined | |
15085 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
15086 | rela.r_offset = (htab->elf.iplt->output_section->vma |
15087 | + htab->elf.iplt->output_offset | |
25f23106 | 15088 | + ent->plt.offset); |
ee67d69a AM |
15089 | if (htab->opd_abi) |
15090 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
15091 | else | |
15092 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
15093 | rela.r_addend = (h->root.u.def.value |
15094 | + h->root.u.def.section->output_offset | |
15095 | + h->root.u.def.section->output_section->vma | |
15096 | + ent->addend); | |
33e44f2e AM |
15097 | loc = (htab->elf.irelplt->contents |
15098 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 15099 | * sizeof (Elf64_External_Rela))); |
e054468f AM |
15100 | } |
15101 | else | |
15102 | { | |
33e44f2e AM |
15103 | rela.r_offset = (htab->elf.splt->output_section->vma |
15104 | + htab->elf.splt->output_offset | |
25f23106 | 15105 | + ent->plt.offset); |
e054468f AM |
15106 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
15107 | rela.r_addend = ent->addend; | |
33e44f2e | 15108 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
15109 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
15110 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
e054468f | 15111 | } |
8387904d | 15112 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
15113 | |
15114 | if (!htab->opd_abi) | |
15115 | { | |
15116 | if (!h->def_regular) | |
15117 | { | |
15118 | /* Mark the symbol as undefined, rather than as | |
15119 | defined in glink. Leave the value if there were | |
15120 | any relocations where pointer equality matters | |
15121 | (this is a clue for the dynamic linker, to make | |
15122 | function pointer comparisons work between an | |
15123 | application and shared library), otherwise set it | |
15124 | to zero. */ | |
15125 | sym->st_shndx = SHN_UNDEF; | |
15126 | if (!h->pointer_equality_needed) | |
15127 | sym->st_value = 0; | |
15128 | else if (!h->ref_regular_nonweak) | |
15129 | { | |
15130 | /* This breaks function pointer comparisons, but | |
15131 | that is better than breaking tests for a NULL | |
15132 | function pointer. */ | |
15133 | sym->st_value = 0; | |
15134 | } | |
15135 | } | |
15136 | } | |
8387904d | 15137 | } |
5bd4f169 | 15138 | |
f5385ebf | 15139 | if (h->needs_copy) |
5bd4f169 | 15140 | { |
65f38f15 | 15141 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 15142 | |
65f38f15 AM |
15143 | if (h->dynindx == -1 |
15144 | || (h->root.type != bfd_link_hash_defined | |
15145 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 15146 | || htab->relbss == NULL) |
65f38f15 | 15147 | abort (); |
5bd4f169 AM |
15148 | |
15149 | rela.r_offset = (h->root.u.def.value | |
15150 | + h->root.u.def.section->output_section->vma | |
15151 | + h->root.u.def.section->output_offset); | |
15152 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
15153 | rela.r_addend = 0; | |
4ce794b7 AM |
15154 | loc = htab->relbss->contents; |
15155 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 15156 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
15157 | } |
15158 | ||
b34976b6 | 15159 | return TRUE; |
5bd4f169 AM |
15160 | } |
15161 | ||
65f38f15 AM |
15162 | /* Used to decide how to sort relocs in an optimal manner for the |
15163 | dynamic linker, before writing them out. */ | |
15164 | ||
15165 | static enum elf_reloc_type_class | |
7e612e98 AM |
15166 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
15167 | const asection *rel_sec, | |
15168 | const Elf_Internal_Rela *rela) | |
65f38f15 | 15169 | { |
04c9666a | 15170 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
15171 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
15172 | ||
33e44f2e | 15173 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 15174 | return reloc_class_ifunc; |
a33d1f77 | 15175 | |
4ce794b7 | 15176 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 15177 | switch (r_type) |
65f38f15 AM |
15178 | { |
15179 | case R_PPC64_RELATIVE: | |
15180 | return reloc_class_relative; | |
15181 | case R_PPC64_JMP_SLOT: | |
15182 | return reloc_class_plt; | |
15183 | case R_PPC64_COPY: | |
15184 | return reloc_class_copy; | |
15185 | default: | |
15186 | return reloc_class_normal; | |
15187 | } | |
15188 | } | |
15189 | ||
5bd4f169 AM |
15190 | /* Finish up the dynamic sections. */ |
15191 | ||
b34976b6 | 15192 | static bfd_boolean |
4ce794b7 AM |
15193 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
15194 | struct bfd_link_info *info) | |
5bd4f169 | 15195 | { |
65f38f15 AM |
15196 | struct ppc_link_hash_table *htab; |
15197 | bfd *dynobj; | |
5bd4f169 | 15198 | asection *sdyn; |
5bd4f169 | 15199 | |
65f38f15 | 15200 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
15201 | if (htab == NULL) |
15202 | return FALSE; | |
15203 | ||
65f38f15 | 15204 | dynobj = htab->elf.dynobj; |
3d4d4302 | 15205 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 15206 | |
65f38f15 | 15207 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 15208 | { |
5bd4f169 AM |
15209 | Elf64_External_Dyn *dyncon, *dynconend; |
15210 | ||
33e44f2e | 15211 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 15212 | abort (); |
5bd4f169 AM |
15213 | |
15214 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 15215 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
15216 | for (; dyncon < dynconend; dyncon++) |
15217 | { | |
15218 | Elf_Internal_Dyn dyn; | |
19397422 | 15219 | asection *s; |
5bd4f169 AM |
15220 | |
15221 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
15222 | ||
15223 | switch (dyn.d_tag) | |
15224 | { | |
65f38f15 AM |
15225 | default: |
15226 | continue; | |
5bd4f169 | 15227 | |
5d1634d7 | 15228 | case DT_PPC64_GLINK: |
4ce794b7 | 15229 | s = htab->glink; |
6348e046 | 15230 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
15231 | /* We stupidly defined DT_PPC64_GLINK to be the start |
15232 | of glink rather than the first entry point, which is | |
15233 | what ld.so needs, and now have a bigger stub to | |
15234 | support automatic multiple TOCs. */ | |
b9e5796b | 15235 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
5d1634d7 AM |
15236 | break; |
15237 | ||
19397422 AM |
15238 | case DT_PPC64_OPD: |
15239 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15240 | if (s == NULL) |
15241 | continue; | |
15242 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
15243 | break; |
15244 | ||
e8910a83 AM |
15245 | case DT_PPC64_OPT: |
15246 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
15247 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
15248 | break; | |
15249 | ||
19397422 AM |
15250 | case DT_PPC64_OPDSZ: |
15251 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15252 | if (s == NULL) |
15253 | continue; | |
eea6121a | 15254 | dyn.d_un.d_val = s->size; |
19397422 AM |
15255 | break; |
15256 | ||
65f38f15 | 15257 | case DT_PLTGOT: |
33e44f2e | 15258 | s = htab->elf.splt; |
6348e046 | 15259 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
15260 | break; |
15261 | ||
15262 | case DT_JMPREL: | |
33e44f2e | 15263 | s = htab->elf.srelplt; |
6348e046 | 15264 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 15265 | break; |
5bd4f169 | 15266 | |
65f38f15 | 15267 | case DT_PLTRELSZ: |
33e44f2e | 15268 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 AM |
15269 | break; |
15270 | ||
15271 | case DT_RELASZ: | |
15272 | /* Don't count procedure linkage table relocs in the | |
15273 | overall reloc count. */ | |
33e44f2e | 15274 | s = htab->elf.srelplt; |
6348e046 AM |
15275 | if (s == NULL) |
15276 | continue; | |
eea6121a | 15277 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
15278 | break; |
15279 | ||
15280 | case DT_RELA: | |
15281 | /* We may not be using the standard ELF linker script. | |
15282 | If .rela.plt is the first .rela section, we adjust | |
15283 | DT_RELA to not include it. */ | |
33e44f2e | 15284 | s = htab->elf.srelplt; |
6348e046 AM |
15285 | if (s == NULL) |
15286 | continue; | |
15287 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
15288 | continue; | |
eea6121a | 15289 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 15290 | break; |
5bd4f169 | 15291 | } |
5bd4f169 | 15292 | |
65f38f15 | 15293 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 15294 | } |
5bd4f169 AM |
15295 | } |
15296 | ||
33e44f2e | 15297 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
5d1634d7 AM |
15298 | { |
15299 | /* Fill in the first entry in the global offset table. | |
15300 | We use it to hold the link-time TOCbase. */ | |
15301 | bfd_put_64 (output_bfd, | |
60ee0d4a | 15302 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 15303 | htab->elf.sgot->contents); |
5d1634d7 AM |
15304 | |
15305 | /* Set .got entry size. */ | |
33e44f2e | 15306 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
15307 | } |
15308 | ||
33e44f2e | 15309 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5d1634d7 AM |
15310 | { |
15311 | /* Set .plt entry size. */ | |
33e44f2e | 15312 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 15313 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
15314 | } |
15315 | ||
84f5d08e AM |
15316 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
15317 | brlt ourselves if emitrelocations. */ | |
15318 | if (htab->brlt != NULL | |
15319 | && htab->brlt->reloc_count != 0 | |
15320 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15321 | htab->brlt, | |
d4730f92 | 15322 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
15323 | elf_section_data (htab->brlt)->relocs, |
15324 | NULL)) | |
15325 | return FALSE; | |
15326 | ||
176a0d42 AM |
15327 | if (htab->glink != NULL |
15328 | && htab->glink->reloc_count != 0 | |
15329 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15330 | htab->glink, | |
d4730f92 | 15331 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
15332 | elf_section_data (htab->glink)->relocs, |
15333 | NULL)) | |
15334 | return FALSE; | |
15335 | ||
58d180e8 | 15336 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
15337 | && htab->glink_eh_frame->size != 0) |
15338 | { | |
15339 | bfd_vma val; | |
15340 | bfd_byte *p; | |
15341 | asection *stub_sec; | |
15342 | ||
15343 | p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie); | |
15344 | for (stub_sec = htab->params->stub_bfd->sections; | |
15345 | stub_sec != NULL; | |
15346 | stub_sec = stub_sec->next) | |
15347 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
15348 | { | |
15349 | /* FDE length. */ | |
15350 | p += 4; | |
15351 | /* CIE pointer. */ | |
15352 | p += 4; | |
15353 | /* Offset to stub section. */ | |
15354 | val = (stub_sec->output_section->vma | |
15355 | + stub_sec->output_offset); | |
15356 | val -= (htab->glink_eh_frame->output_section->vma | |
15357 | + htab->glink_eh_frame->output_offset | |
15358 | + (p - htab->glink_eh_frame->contents)); | |
15359 | if (val + 0x80000000 > 0xffffffff) | |
15360 | { | |
15361 | info->callbacks->einfo | |
15362 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15363 | stub_sec->name); | |
15364 | return FALSE; | |
15365 | } | |
15366 | bfd_put_32 (dynobj, val, p); | |
15367 | p += 4; | |
15368 | /* stub section size. */ | |
15369 | p += 4; | |
15370 | /* Augmentation. */ | |
15371 | p += 1; | |
15372 | /* Pad. */ | |
15373 | p += 7; | |
15374 | } | |
15375 | if (htab->glink != NULL && htab->glink->size != 0) | |
15376 | { | |
15377 | /* FDE length. */ | |
15378 | p += 4; | |
15379 | /* CIE pointer. */ | |
15380 | p += 4; | |
15381 | /* Offset to .glink. */ | |
15382 | val = (htab->glink->output_section->vma | |
15383 | + htab->glink->output_offset | |
15384 | + 8); | |
15385 | val -= (htab->glink_eh_frame->output_section->vma | |
15386 | + htab->glink_eh_frame->output_offset | |
15387 | + (p - htab->glink_eh_frame->contents)); | |
15388 | if (val + 0x80000000 > 0xffffffff) | |
15389 | { | |
15390 | info->callbacks->einfo | |
15391 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15392 | htab->glink->name); | |
15393 | return FALSE; | |
15394 | } | |
15395 | bfd_put_32 (dynobj, val, p); | |
15396 | p += 4; | |
15397 | /* .glink size. */ | |
15398 | p += 4; | |
15399 | /* Augmentation. */ | |
15400 | p += 1; | |
15401 | /* Ops. */ | |
15402 | p += 7; | |
15403 | } | |
15404 | ||
15405 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
15406 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
15407 | htab->glink_eh_frame, | |
15408 | htab->glink_eh_frame->contents)) | |
15409 | return FALSE; | |
15410 | } | |
58d180e8 | 15411 | |
e717da7e | 15412 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15413 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15414 | bfd. */ | |
c72f2fb2 | 15415 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
15416 | { |
15417 | asection *s; | |
7b53ace3 | 15418 | |
0c8d6e5c | 15419 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15420 | continue; |
15421 | ||
e717da7e AM |
15422 | s = ppc64_elf_tdata (dynobj)->got; |
15423 | if (s != NULL | |
eea6121a | 15424 | && s->size != 0 |
e717da7e AM |
15425 | && s->output_section != bfd_abs_section_ptr |
15426 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15427 | s->contents, s->output_offset, | |
eea6121a | 15428 | s->size)) |
e717da7e AM |
15429 | return FALSE; |
15430 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15431 | if (s != NULL | |
eea6121a | 15432 | && s->size != 0 |
e717da7e AM |
15433 | && s->output_section != bfd_abs_section_ptr |
15434 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15435 | s->contents, s->output_offset, | |
eea6121a | 15436 | s->size)) |
e717da7e AM |
15437 | return FALSE; |
15438 | } | |
f6c52c13 | 15439 | |
b34976b6 | 15440 | return TRUE; |
5bd4f169 AM |
15441 | } |
15442 | ||
5bd4f169 | 15443 | #include "elf64-target.h" |
7b8e7dad AM |
15444 | |
15445 | /* FreeBSD support */ | |
15446 | ||
15447 | #undef TARGET_LITTLE_SYM | |
15448 | #undef TARGET_LITTLE_NAME | |
15449 | ||
15450 | #undef TARGET_BIG_SYM | |
6d00b590 | 15451 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
15452 | #undef TARGET_BIG_NAME |
15453 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15454 | ||
15455 | #undef ELF_OSABI | |
15456 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15457 | ||
15458 | #undef elf64_bed | |
15459 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15460 | ||
15461 | #include "elf64-target.h" | |
15462 |