Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
4b95cf5c | 2 | Copyright (C) 1999-2014 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 | |
24718e3b | 67 | #define ELF_COMMONPAGESIZE 0x1000 |
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 AM |
140 | #define TOC_BASE_OFF 0x8000 |
141 | ||
142 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
143 | #define TP_OFFSET 0x7000 | |
144 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 145 | |
ad8e1ba5 AM |
146 | /* .plt call stub instructions. The normal stub is like this, but |
147 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 148 | insert an addi to adjust r11. */ |
a078d95a | 149 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
150 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
151 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
152 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
153 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
154 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
155 | #define BCTR 0x4e800420 /* bctr */ |
156 | ||
71a39c98 | 157 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
ad8e1ba5 AM |
158 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
159 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
160 | ||
71a39c98 AM |
161 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
162 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
163 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
794e51c0 AM |
164 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
165 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
166 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
167 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
168 | ||
71a39c98 | 169 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 AM |
170 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
171 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
172 | ||
a078d95a | 173 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
ad8e1ba5 | 174 | |
397998fc | 175 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
a345bc8d AM |
176 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
177 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
178 | ||
ee4bf8d2 | 179 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 180 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
181 | /* 0: */ |
182 | /* .quad plt0-1f */ | |
183 | /* __glink: */ | |
184 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
185 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
186 | /* 1: */ | |
187 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 188 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 189 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
190 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
191 | /* ld %12,0(%11) */ | |
192 | /* ld %2,8(%11) */ | |
193 | /* mtctr %12 */ | |
194 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 195 | /* bctr */ |
b9e5796b AM |
196 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
197 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
198 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
199 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
200 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
201 | |
202 | /* Pad with this. */ | |
203 | #define NOP 0x60000000 | |
204 | ||
721956f4 AM |
205 | /* Some other nops. */ |
206 | #define CROR_151515 0x4def7b82 | |
207 | #define CROR_313131 0x4ffffb82 | |
208 | ||
cedb70c5 | 209 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
210 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
211 | #define B_DOT 0x48000000 /* b . */ | |
212 | ||
213 | /* After that, we need two instructions to load the index, followed by | |
214 | a branch. */ | |
215 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 216 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 217 | |
deb0e272 AM |
218 | /* Instructions used by the save and restore reg functions. */ |
219 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
220 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
221 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
222 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
223 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
224 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
225 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
226 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
227 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
228 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
229 | #define BLR 0x4e800020 /* blr */ |
230 | ||
41bd81ab AM |
231 | /* Since .opd is an array of descriptors and each entry will end up |
232 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
233 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 234 | relocate .opd without reloc entries. */ |
41bd81ab AM |
235 | #ifndef NO_OPD_RELOCS |
236 | #define NO_OPD_RELOCS 0 | |
237 | #endif | |
810d4e75 AM |
238 | |
239 | static inline int | |
240 | abiversion (bfd *abfd) | |
241 | { | |
242 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
243 | } | |
244 | ||
245 | static inline void | |
246 | set_abiversion (bfd *abfd, int ver) | |
247 | { | |
248 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
249 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
250 | } | |
5bd4f169 | 251 | \f |
f5e87a1d | 252 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 253 | |
5bd4f169 | 254 | /* Relocation HOWTO's. */ |
04c9666a | 255 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
256 | |
257 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
258 | /* This reloc does nothing. */ | |
259 | HOWTO (R_PPC64_NONE, /* type */ | |
260 | 0, /* rightshift */ | |
411e1bfb AM |
261 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
262 | 32, /* bitsize */ | |
b34976b6 | 263 | FALSE, /* pc_relative */ |
5bd4f169 | 264 | 0, /* bitpos */ |
f5e87a1d | 265 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
266 | bfd_elf_generic_reloc, /* special_function */ |
267 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 268 | FALSE, /* partial_inplace */ |
d006db6c | 269 | 0, /* src_mask */ |
5bd4f169 | 270 | 0, /* dst_mask */ |
b34976b6 | 271 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
272 | |
273 | /* A standard 32 bit relocation. */ | |
274 | HOWTO (R_PPC64_ADDR32, /* type */ | |
275 | 0, /* rightshift */ | |
276 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
277 | 32, /* bitsize */ | |
b34976b6 | 278 | FALSE, /* pc_relative */ |
5bd4f169 AM |
279 | 0, /* bitpos */ |
280 | complain_overflow_bitfield, /* complain_on_overflow */ | |
281 | bfd_elf_generic_reloc, /* special_function */ | |
282 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 283 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
284 | 0, /* src_mask */ |
285 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 286 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
287 | |
288 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
289 | FIXME: we don't check that, we just clear them. */ | |
290 | HOWTO (R_PPC64_ADDR24, /* type */ | |
291 | 0, /* rightshift */ | |
292 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
293 | 26, /* bitsize */ | |
b34976b6 | 294 | FALSE, /* pc_relative */ |
5bd4f169 AM |
295 | 0, /* bitpos */ |
296 | complain_overflow_bitfield, /* complain_on_overflow */ | |
297 | bfd_elf_generic_reloc, /* special_function */ | |
298 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 299 | FALSE, /* partial_inplace */ |
d006db6c | 300 | 0, /* src_mask */ |
f5e87a1d | 301 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 302 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
303 | |
304 | /* A standard 16 bit relocation. */ | |
305 | HOWTO (R_PPC64_ADDR16, /* type */ | |
306 | 0, /* rightshift */ | |
307 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
308 | 16, /* bitsize */ | |
b34976b6 | 309 | FALSE, /* pc_relative */ |
5bd4f169 AM |
310 | 0, /* bitpos */ |
311 | complain_overflow_bitfield, /* complain_on_overflow */ | |
312 | bfd_elf_generic_reloc, /* special_function */ | |
313 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 314 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
315 | 0, /* src_mask */ |
316 | 0xffff, /* dst_mask */ | |
b34976b6 | 317 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
318 | |
319 | /* A 16 bit relocation without overflow. */ | |
320 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
321 | 0, /* rightshift */ | |
322 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
323 | 16, /* bitsize */ | |
b34976b6 | 324 | FALSE, /* pc_relative */ |
5bd4f169 AM |
325 | 0, /* bitpos */ |
326 | complain_overflow_dont,/* complain_on_overflow */ | |
327 | bfd_elf_generic_reloc, /* special_function */ | |
328 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 329 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
330 | 0, /* src_mask */ |
331 | 0xffff, /* dst_mask */ | |
b34976b6 | 332 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
333 | |
334 | /* Bits 16-31 of an address. */ | |
335 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
336 | 16, /* rightshift */ | |
337 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
338 | 16, /* bitsize */ | |
b34976b6 | 339 | FALSE, /* pc_relative */ |
5bd4f169 | 340 | 0, /* bitpos */ |
f9c6b907 | 341 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
342 | bfd_elf_generic_reloc, /* special_function */ |
343 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 344 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
345 | 0, /* src_mask */ |
346 | 0xffff, /* dst_mask */ | |
b34976b6 | 347 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
348 | |
349 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
350 | bits, treated as a signed number, is negative. */ | |
351 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
352 | 16, /* rightshift */ | |
353 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
354 | 16, /* bitsize */ | |
b34976b6 | 355 | FALSE, /* pc_relative */ |
5bd4f169 | 356 | 0, /* bitpos */ |
f9c6b907 | 357 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 358 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 359 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 360 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
361 | 0, /* src_mask */ |
362 | 0xffff, /* dst_mask */ | |
b34976b6 | 363 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
364 | |
365 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
366 | FIXME: we don't check that, we just clear them. */ | |
367 | HOWTO (R_PPC64_ADDR14, /* type */ | |
368 | 0, /* rightshift */ | |
369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
370 | 16, /* bitsize */ | |
b34976b6 | 371 | FALSE, /* pc_relative */ |
5bd4f169 | 372 | 0, /* bitpos */ |
b80eed39 | 373 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 374 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 375 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 376 | FALSE, /* partial_inplace */ |
d006db6c | 377 | 0, /* src_mask */ |
f5e87a1d | 378 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 379 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
380 | |
381 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
382 | indicate that the branch is expected to be taken. The lower two | |
383 | bits must be zero. */ | |
384 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
385 | 0, /* rightshift */ | |
386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
387 | 16, /* bitsize */ | |
b34976b6 | 388 | FALSE, /* pc_relative */ |
5bd4f169 | 389 | 0, /* bitpos */ |
b80eed39 | 390 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 391 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 392 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 393 | FALSE, /* partial_inplace */ |
d006db6c | 394 | 0, /* src_mask */ |
f5e87a1d | 395 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 396 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
397 | |
398 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
399 | indicate that the branch is not expected to be taken. The lower | |
400 | two bits must be zero. */ | |
401 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
b34976b6 | 405 | FALSE, /* pc_relative */ |
5bd4f169 | 406 | 0, /* bitpos */ |
b80eed39 | 407 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 408 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 409 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
d006db6c | 411 | 0, /* src_mask */ |
f5e87a1d | 412 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 413 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
414 | |
415 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
416 | HOWTO (R_PPC64_REL24, /* type */ | |
417 | 0, /* rightshift */ | |
418 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
419 | 26, /* bitsize */ | |
b34976b6 | 420 | TRUE, /* pc_relative */ |
5bd4f169 AM |
421 | 0, /* bitpos */ |
422 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 423 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 424 | "R_PPC64_REL24", /* name */ |
b34976b6 | 425 | FALSE, /* partial_inplace */ |
d006db6c | 426 | 0, /* src_mask */ |
f5e87a1d | 427 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 428 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
429 | |
430 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
431 | HOWTO (R_PPC64_REL14, /* type */ | |
432 | 0, /* rightshift */ | |
433 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
434 | 16, /* bitsize */ | |
b34976b6 | 435 | TRUE, /* pc_relative */ |
5bd4f169 AM |
436 | 0, /* bitpos */ |
437 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 438 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 439 | "R_PPC64_REL14", /* name */ |
b34976b6 | 440 | FALSE, /* partial_inplace */ |
d006db6c | 441 | 0, /* src_mask */ |
f5e87a1d | 442 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 443 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
444 | |
445 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
446 | the branch is expected to be taken. The lower two bits must be | |
447 | zero. */ | |
448 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
449 | 0, /* rightshift */ | |
450 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
451 | 16, /* bitsize */ | |
b34976b6 | 452 | TRUE, /* pc_relative */ |
5bd4f169 AM |
453 | 0, /* bitpos */ |
454 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 455 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 456 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 457 | FALSE, /* partial_inplace */ |
d006db6c | 458 | 0, /* src_mask */ |
f5e87a1d | 459 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 460 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
461 | |
462 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
463 | the branch is not expected to be taken. The lower two bits must | |
464 | be zero. */ | |
465 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
466 | 0, /* rightshift */ | |
467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
468 | 16, /* bitsize */ | |
b34976b6 | 469 | TRUE, /* pc_relative */ |
5bd4f169 AM |
470 | 0, /* bitpos */ |
471 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 472 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 473 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 474 | FALSE, /* partial_inplace */ |
d006db6c | 475 | 0, /* src_mask */ |
f5e87a1d | 476 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 477 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
478 | |
479 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
480 | symbol. */ | |
481 | HOWTO (R_PPC64_GOT16, /* type */ | |
482 | 0, /* rightshift */ | |
483 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 16, /* bitsize */ | |
b34976b6 | 485 | FALSE, /* pc_relative */ |
5bd4f169 AM |
486 | 0, /* bitpos */ |
487 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 488 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 489 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 490 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
491 | 0, /* src_mask */ |
492 | 0xffff, /* dst_mask */ | |
b34976b6 | 493 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
494 | |
495 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
496 | the symbol. */ | |
497 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
498 | 0, /* rightshift */ | |
499 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
500 | 16, /* bitsize */ | |
b34976b6 | 501 | FALSE, /* pc_relative */ |
5bd4f169 AM |
502 | 0, /* bitpos */ |
503 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 504 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 505 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 506 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
507 | 0, /* src_mask */ |
508 | 0xffff, /* dst_mask */ | |
b34976b6 | 509 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
510 | |
511 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
512 | the symbol. */ | |
513 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
514 | 16, /* rightshift */ | |
515 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
516 | 16, /* bitsize */ | |
b34976b6 | 517 | FALSE, /* pc_relative */ |
5bd4f169 | 518 | 0, /* bitpos */ |
f9c6b907 | 519 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 520 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 521 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 522 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
523 | 0, /* src_mask */ |
524 | 0xffff, /* dst_mask */ | |
b34976b6 | 525 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
526 | |
527 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
528 | the symbol. */ | |
529 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
530 | 16, /* rightshift */ | |
531 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 16, /* bitsize */ | |
b34976b6 | 533 | FALSE, /* pc_relative */ |
5bd4f169 | 534 | 0, /* bitpos */ |
f9c6b907 | 535 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 536 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 537 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 538 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
539 | 0, /* src_mask */ |
540 | 0xffff, /* dst_mask */ | |
b34976b6 | 541 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
542 | |
543 | /* This is used only by the dynamic linker. The symbol should exist | |
544 | both in the object being run and in some shared library. The | |
545 | dynamic linker copies the data addressed by the symbol from the | |
546 | shared library into the object, because the object being | |
547 | run has to have the data at some particular address. */ | |
548 | HOWTO (R_PPC64_COPY, /* type */ | |
549 | 0, /* rightshift */ | |
f5e87a1d AM |
550 | 0, /* this one is variable size */ |
551 | 0, /* bitsize */ | |
b34976b6 | 552 | FALSE, /* pc_relative */ |
5bd4f169 | 553 | 0, /* bitpos */ |
f5e87a1d AM |
554 | complain_overflow_dont, /* complain_on_overflow */ |
555 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 556 | "R_PPC64_COPY", /* name */ |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
558 | 0, /* src_mask */ |
559 | 0, /* dst_mask */ | |
b34976b6 | 560 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
561 | |
562 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
563 | entries. */ | |
564 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
565 | 0, /* rightshift */ | |
566 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
567 | 64, /* bitsize */ | |
b34976b6 | 568 | FALSE, /* pc_relative */ |
5bd4f169 AM |
569 | 0, /* bitpos */ |
570 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 571 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 572 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 573 | FALSE, /* partial_inplace */ |
5bd4f169 | 574 | 0, /* src_mask */ |
f5e87a1d | 575 | ONES (64), /* dst_mask */ |
b34976b6 | 576 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
577 | |
578 | /* Created by the link editor. Marks a procedure linkage table | |
579 | entry for a symbol. */ | |
580 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
581 | 0, /* rightshift */ | |
582 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
583 | 0, /* bitsize */ | |
b34976b6 | 584 | FALSE, /* pc_relative */ |
5bd4f169 AM |
585 | 0, /* bitpos */ |
586 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 587 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 588 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 589 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
590 | 0, /* src_mask */ |
591 | 0, /* dst_mask */ | |
b34976b6 | 592 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
593 | |
594 | /* Used only by the dynamic linker. When the object is run, this | |
595 | doubleword64 is set to the load address of the object, plus the | |
596 | addend. */ | |
597 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
598 | 0, /* rightshift */ | |
599 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
600 | 64, /* bitsize */ | |
b34976b6 | 601 | FALSE, /* pc_relative */ |
5bd4f169 AM |
602 | 0, /* bitpos */ |
603 | complain_overflow_dont, /* complain_on_overflow */ | |
604 | bfd_elf_generic_reloc, /* special_function */ | |
605 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 606 | FALSE, /* partial_inplace */ |
5bd4f169 | 607 | 0, /* src_mask */ |
f5e87a1d | 608 | ONES (64), /* dst_mask */ |
b34976b6 | 609 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
610 | |
611 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
612 | HOWTO (R_PPC64_UADDR32, /* type */ | |
613 | 0, /* rightshift */ | |
614 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
615 | 32, /* bitsize */ | |
b34976b6 | 616 | FALSE, /* pc_relative */ |
5bd4f169 AM |
617 | 0, /* bitpos */ |
618 | complain_overflow_bitfield, /* complain_on_overflow */ | |
619 | bfd_elf_generic_reloc, /* special_function */ | |
620 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 621 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
622 | 0, /* src_mask */ |
623 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 624 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
625 | |
626 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
627 | HOWTO (R_PPC64_UADDR16, /* type */ | |
628 | 0, /* rightshift */ | |
629 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
630 | 16, /* bitsize */ | |
b34976b6 | 631 | FALSE, /* pc_relative */ |
5bd4f169 AM |
632 | 0, /* bitpos */ |
633 | complain_overflow_bitfield, /* complain_on_overflow */ | |
634 | bfd_elf_generic_reloc, /* special_function */ | |
635 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 636 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
637 | 0, /* src_mask */ |
638 | 0xffff, /* dst_mask */ | |
b34976b6 | 639 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
640 | |
641 | /* 32-bit PC relative. */ | |
642 | HOWTO (R_PPC64_REL32, /* type */ | |
643 | 0, /* rightshift */ | |
644 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
645 | 32, /* bitsize */ | |
b34976b6 | 646 | TRUE, /* pc_relative */ |
5bd4f169 | 647 | 0, /* bitpos */ |
5bd4f169 AM |
648 | complain_overflow_signed, /* complain_on_overflow */ |
649 | bfd_elf_generic_reloc, /* special_function */ | |
650 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 651 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
652 | 0, /* src_mask */ |
653 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 654 | TRUE), /* pcrel_offset */ |
5bd4f169 | 655 | |
10ed1bba | 656 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
657 | HOWTO (R_PPC64_PLT32, /* type */ |
658 | 0, /* rightshift */ | |
659 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
660 | 32, /* bitsize */ | |
b34976b6 | 661 | FALSE, /* pc_relative */ |
5bd4f169 AM |
662 | 0, /* bitpos */ |
663 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 664 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 665 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 666 | FALSE, /* partial_inplace */ |
5bd4f169 | 667 | 0, /* src_mask */ |
f5e87a1d | 668 | 0xffffffff, /* dst_mask */ |
b34976b6 | 669 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
670 | |
671 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
672 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
673 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
674 | 0, /* rightshift */ | |
675 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
676 | 32, /* bitsize */ | |
b34976b6 | 677 | TRUE, /* pc_relative */ |
5bd4f169 AM |
678 | 0, /* bitpos */ |
679 | complain_overflow_signed, /* complain_on_overflow */ | |
680 | bfd_elf_generic_reloc, /* special_function */ | |
681 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 682 | FALSE, /* partial_inplace */ |
5bd4f169 | 683 | 0, /* src_mask */ |
f5e87a1d | 684 | 0xffffffff, /* dst_mask */ |
b34976b6 | 685 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
686 | |
687 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
688 | the symbol. */ | |
689 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
690 | 0, /* rightshift */ | |
691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
692 | 16, /* bitsize */ | |
b34976b6 | 693 | FALSE, /* pc_relative */ |
5bd4f169 AM |
694 | 0, /* bitpos */ |
695 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 696 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 697 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 698 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
699 | 0, /* src_mask */ |
700 | 0xffff, /* dst_mask */ | |
b34976b6 | 701 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
702 | |
703 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
704 | the symbol. */ | |
705 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
706 | 16, /* rightshift */ | |
707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
708 | 16, /* bitsize */ | |
b34976b6 | 709 | FALSE, /* pc_relative */ |
5bd4f169 | 710 | 0, /* bitpos */ |
f9c6b907 | 711 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 712 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 713 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 714 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
715 | 0, /* src_mask */ |
716 | 0xffff, /* dst_mask */ | |
b34976b6 | 717 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
718 | |
719 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
720 | the symbol. */ | |
721 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
722 | 16, /* rightshift */ | |
723 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
724 | 16, /* bitsize */ | |
b34976b6 | 725 | FALSE, /* pc_relative */ |
5bd4f169 | 726 | 0, /* bitpos */ |
f9c6b907 | 727 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 728 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 729 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 730 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
731 | 0, /* src_mask */ |
732 | 0xffff, /* dst_mask */ | |
b34976b6 | 733 | FALSE), /* pcrel_offset */ |
5bd4f169 | 734 | |
c061c2d8 | 735 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
736 | HOWTO (R_PPC64_SECTOFF, /* type */ |
737 | 0, /* rightshift */ | |
c061c2d8 AM |
738 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
739 | 16, /* bitsize */ | |
b34976b6 | 740 | FALSE, /* pc_relative */ |
5bd4f169 | 741 | 0, /* bitpos */ |
b80eed39 | 742 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 743 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 744 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 745 | FALSE, /* partial_inplace */ |
5bd4f169 | 746 | 0, /* src_mask */ |
c061c2d8 | 747 | 0xffff, /* dst_mask */ |
b34976b6 | 748 | FALSE), /* pcrel_offset */ |
5bd4f169 | 749 | |
c061c2d8 | 750 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
751 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
752 | 0, /* rightshift */ | |
753 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 16, /* bitsize */ | |
b34976b6 | 755 | FALSE, /* pc_relative */ |
5bd4f169 AM |
756 | 0, /* bitpos */ |
757 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 758 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 759 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 760 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
761 | 0, /* src_mask */ |
762 | 0xffff, /* dst_mask */ | |
b34976b6 | 763 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
764 | |
765 | /* 16-bit upper half section relative relocation. */ | |
766 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
767 | 16, /* rightshift */ | |
768 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
769 | 16, /* bitsize */ | |
b34976b6 | 770 | FALSE, /* pc_relative */ |
5bd4f169 | 771 | 0, /* bitpos */ |
f9c6b907 | 772 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 773 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 774 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 775 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
776 | 0, /* src_mask */ |
777 | 0xffff, /* dst_mask */ | |
b34976b6 | 778 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
779 | |
780 | /* 16-bit upper half adjusted section relative relocation. */ | |
781 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
782 | 16, /* rightshift */ | |
783 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 16, /* bitsize */ | |
b34976b6 | 785 | FALSE, /* pc_relative */ |
5bd4f169 | 786 | 0, /* bitpos */ |
f9c6b907 | 787 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 788 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 789 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 790 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
791 | 0, /* src_mask */ |
792 | 0xffff, /* dst_mask */ | |
b34976b6 | 793 | FALSE), /* pcrel_offset */ |
5bd4f169 | 794 | |
04c9666a AM |
795 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
796 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
797 | 2, /* rightshift */ |
798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
799 | 30, /* bitsize */ | |
b34976b6 | 800 | TRUE, /* pc_relative */ |
5bd4f169 AM |
801 | 0, /* bitpos */ |
802 | complain_overflow_dont, /* complain_on_overflow */ | |
803 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 804 | "R_PPC64_REL30", /* name */ |
b34976b6 | 805 | FALSE, /* partial_inplace */ |
d006db6c | 806 | 0, /* src_mask */ |
5bd4f169 | 807 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 808 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
809 | |
810 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
811 | ||
812 | /* A standard 64-bit relocation. */ | |
813 | HOWTO (R_PPC64_ADDR64, /* type */ | |
814 | 0, /* rightshift */ | |
815 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
816 | 64, /* bitsize */ | |
b34976b6 | 817 | FALSE, /* pc_relative */ |
5bd4f169 AM |
818 | 0, /* bitpos */ |
819 | complain_overflow_dont, /* complain_on_overflow */ | |
820 | bfd_elf_generic_reloc, /* special_function */ | |
821 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 822 | FALSE, /* partial_inplace */ |
5bd4f169 | 823 | 0, /* src_mask */ |
f5e87a1d | 824 | ONES (64), /* dst_mask */ |
b34976b6 | 825 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
826 | |
827 | /* The bits 32-47 of an address. */ | |
828 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
829 | 32, /* rightshift */ | |
830 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
831 | 16, /* bitsize */ | |
b34976b6 | 832 | FALSE, /* pc_relative */ |
5bd4f169 AM |
833 | 0, /* bitpos */ |
834 | complain_overflow_dont, /* complain_on_overflow */ | |
835 | bfd_elf_generic_reloc, /* special_function */ | |
836 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 837 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
838 | 0, /* src_mask */ |
839 | 0xffff, /* dst_mask */ | |
b34976b6 | 840 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
841 | |
842 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
843 | 16 bits, treated as a signed number, is negative. */ | |
844 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
845 | 32, /* rightshift */ | |
846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
847 | 16, /* bitsize */ | |
b34976b6 | 848 | FALSE, /* pc_relative */ |
5bd4f169 AM |
849 | 0, /* bitpos */ |
850 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 851 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 852 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 853 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
854 | 0, /* src_mask */ |
855 | 0xffff, /* dst_mask */ | |
b34976b6 | 856 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
857 | |
858 | /* The bits 48-63 of an address. */ | |
859 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
860 | 48, /* rightshift */ | |
861 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
862 | 16, /* bitsize */ | |
b34976b6 | 863 | FALSE, /* pc_relative */ |
5bd4f169 AM |
864 | 0, /* bitpos */ |
865 | complain_overflow_dont, /* complain_on_overflow */ | |
866 | bfd_elf_generic_reloc, /* special_function */ | |
867 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 868 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
869 | 0, /* src_mask */ |
870 | 0xffff, /* dst_mask */ | |
b34976b6 | 871 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
872 | |
873 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
874 | 16 bits, treated as a signed number, is negative. */ | |
875 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
876 | 48, /* rightshift */ | |
877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
878 | 16, /* bitsize */ | |
b34976b6 | 879 | FALSE, /* pc_relative */ |
5bd4f169 AM |
880 | 0, /* bitpos */ |
881 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 882 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 883 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 884 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
885 | 0, /* src_mask */ |
886 | 0xffff, /* dst_mask */ | |
b34976b6 | 887 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
888 | |
889 | /* Like ADDR64, but may be unaligned. */ | |
890 | HOWTO (R_PPC64_UADDR64, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
893 | 64, /* bitsize */ | |
b34976b6 | 894 | FALSE, /* pc_relative */ |
5bd4f169 AM |
895 | 0, /* bitpos */ |
896 | complain_overflow_dont, /* complain_on_overflow */ | |
897 | bfd_elf_generic_reloc, /* special_function */ | |
898 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 899 | FALSE, /* partial_inplace */ |
5bd4f169 | 900 | 0, /* src_mask */ |
f5e87a1d | 901 | ONES (64), /* dst_mask */ |
b34976b6 | 902 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
903 | |
904 | /* 64-bit relative relocation. */ | |
905 | HOWTO (R_PPC64_REL64, /* type */ | |
906 | 0, /* rightshift */ | |
907 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
908 | 64, /* bitsize */ | |
b34976b6 | 909 | TRUE, /* pc_relative */ |
5bd4f169 AM |
910 | 0, /* bitpos */ |
911 | complain_overflow_dont, /* complain_on_overflow */ | |
912 | bfd_elf_generic_reloc, /* special_function */ | |
913 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 914 | FALSE, /* partial_inplace */ |
5bd4f169 | 915 | 0, /* src_mask */ |
f5e87a1d | 916 | ONES (64), /* dst_mask */ |
b34976b6 | 917 | TRUE), /* pcrel_offset */ |
5bd4f169 | 918 | |
cedb70c5 | 919 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
920 | HOWTO (R_PPC64_PLT64, /* type */ |
921 | 0, /* rightshift */ | |
922 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
923 | 64, /* bitsize */ | |
b34976b6 | 924 | FALSE, /* pc_relative */ |
5bd4f169 AM |
925 | 0, /* bitpos */ |
926 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 927 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 928 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 929 | FALSE, /* partial_inplace */ |
5bd4f169 | 930 | 0, /* src_mask */ |
f5e87a1d | 931 | ONES (64), /* dst_mask */ |
b34976b6 | 932 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
933 | |
934 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
935 | table. */ | |
936 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
937 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
938 | 0, /* rightshift */ | |
939 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
940 | 64, /* bitsize */ | |
b34976b6 | 941 | TRUE, /* pc_relative */ |
5bd4f169 AM |
942 | 0, /* bitpos */ |
943 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 944 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 945 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 946 | FALSE, /* partial_inplace */ |
5bd4f169 | 947 | 0, /* src_mask */ |
f5e87a1d | 948 | ONES (64), /* dst_mask */ |
b34976b6 | 949 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
950 | |
951 | /* 16 bit TOC-relative relocation. */ | |
952 | ||
953 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
954 | HOWTO (R_PPC64_TOC16, /* type */ | |
955 | 0, /* rightshift */ | |
956 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
957 | 16, /* bitsize */ | |
b34976b6 | 958 | FALSE, /* pc_relative */ |
5bd4f169 AM |
959 | 0, /* bitpos */ |
960 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 961 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 962 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 963 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
964 | 0, /* src_mask */ |
965 | 0xffff, /* dst_mask */ | |
b34976b6 | 966 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
967 | |
968 | /* 16 bit TOC-relative relocation without overflow. */ | |
969 | ||
970 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
971 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
972 | 0, /* rightshift */ | |
973 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
974 | 16, /* bitsize */ | |
b34976b6 | 975 | FALSE, /* pc_relative */ |
5bd4f169 AM |
976 | 0, /* bitpos */ |
977 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 978 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 979 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 980 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
981 | 0, /* src_mask */ |
982 | 0xffff, /* dst_mask */ | |
b34976b6 | 983 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
984 | |
985 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
986 | ||
987 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
988 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
989 | 16, /* rightshift */ | |
990 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
991 | 16, /* bitsize */ | |
b34976b6 | 992 | FALSE, /* pc_relative */ |
5bd4f169 | 993 | 0, /* bitpos */ |
f9c6b907 | 994 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 995 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 996 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 997 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
998 | 0, /* src_mask */ |
999 | 0xffff, /* dst_mask */ | |
b34976b6 | 1000 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1001 | |
1002 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1003 | contents of the low 16 bits, treated as a signed number, is | |
1004 | negative. */ | |
1005 | ||
1006 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1007 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1008 | 16, /* rightshift */ | |
1009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 16, /* bitsize */ | |
b34976b6 | 1011 | FALSE, /* pc_relative */ |
5bd4f169 | 1012 | 0, /* bitpos */ |
f9c6b907 | 1013 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1014 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1015 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1016 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1017 | 0, /* src_mask */ |
1018 | 0xffff, /* dst_mask */ | |
b34976b6 | 1019 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1020 | |
1021 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1022 | ||
1023 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1024 | HOWTO (R_PPC64_TOC, /* type */ | |
1025 | 0, /* rightshift */ | |
1026 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1027 | 64, /* bitsize */ | |
b34976b6 | 1028 | FALSE, /* pc_relative */ |
5bd4f169 | 1029 | 0, /* bitpos */ |
b80eed39 | 1030 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1031 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1032 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1033 | FALSE, /* partial_inplace */ |
5bd4f169 | 1034 | 0, /* src_mask */ |
f5e87a1d | 1035 | ONES (64), /* dst_mask */ |
b34976b6 | 1036 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1037 | |
1038 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1039 | value to relocate may (!) refer to a PLT entry which the link | |
1040 | editor (a) may replace with the symbol value. If the link editor | |
1041 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1042 | entry and store the address to the new PLT entry in the GOT. | |
1043 | This permits lazy resolution of function symbols at run time. | |
1044 | The link editor may also skip all of this and just (c) emit a | |
1045 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1046 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1047 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1048 | 0, /* rightshift */ | |
1049 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1050 | 16, /* bitsize */ | |
b34976b6 | 1051 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1052 | 0, /* bitpos */ |
1053 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1054 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1055 | "R_PPC64_PLTGOT16", /* name */ |
1056 | FALSE, /* partial_inplace */ | |
1057 | 0, /* src_mask */ | |
1058 | 0xffff, /* dst_mask */ | |
1059 | FALSE), /* pcrel_offset */ | |
1060 | ||
1061 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1062 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1063 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1064 | 0, /* rightshift */ | |
1065 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1066 | 16, /* bitsize */ | |
1067 | FALSE, /* pc_relative */ | |
1068 | 0, /* bitpos */ | |
1069 | complain_overflow_dont, /* complain_on_overflow */ | |
1070 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1071 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1072 | FALSE, /* partial_inplace */ | |
1073 | 0, /* src_mask */ | |
1074 | 0xffff, /* dst_mask */ | |
1075 | FALSE), /* pcrel_offset */ | |
1076 | ||
1077 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1078 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1079 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1080 | 16, /* rightshift */ | |
1081 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1082 | 16, /* bitsize */ | |
1083 | FALSE, /* pc_relative */ | |
1084 | 0, /* bitpos */ | |
f9c6b907 | 1085 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1086 | ppc64_elf_unhandled_reloc, /* special_function */ |
1087 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1088 | FALSE, /* partial_inplace */ | |
1089 | 0, /* src_mask */ | |
1090 | 0xffff, /* dst_mask */ | |
1091 | FALSE), /* pcrel_offset */ | |
1092 | ||
1093 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1094 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1095 | is negative. */ | |
1096 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1097 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1098 | 16, /* rightshift */ | |
1099 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1100 | 16, /* bitsize */ | |
1101 | FALSE, /* pc_relative */ | |
1102 | 0, /* bitpos */ | |
f9c6b907 | 1103 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1104 | ppc64_elf_unhandled_reloc, /* special_function */ |
1105 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1106 | FALSE, /* partial_inplace */ | |
1107 | 0, /* src_mask */ | |
1108 | 0xffff, /* dst_mask */ | |
1109 | FALSE), /* pcrel_offset */ | |
1110 | ||
1111 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1112 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1113 | 0, /* rightshift */ | |
1114 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1115 | 16, /* bitsize */ | |
1116 | FALSE, /* pc_relative */ | |
1117 | 0, /* bitpos */ | |
b80eed39 | 1118 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1119 | bfd_elf_generic_reloc, /* special_function */ |
1120 | "R_PPC64_ADDR16_DS", /* name */ | |
1121 | FALSE, /* partial_inplace */ | |
1122 | 0, /* src_mask */ | |
1123 | 0xfffc, /* dst_mask */ | |
1124 | FALSE), /* pcrel_offset */ | |
1125 | ||
1126 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1127 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1128 | 0, /* rightshift */ | |
1129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1130 | 16, /* bitsize */ | |
1131 | FALSE, /* pc_relative */ | |
1132 | 0, /* bitpos */ | |
1133 | complain_overflow_dont,/* complain_on_overflow */ | |
1134 | bfd_elf_generic_reloc, /* special_function */ | |
1135 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1136 | FALSE, /* partial_inplace */ | |
1137 | 0, /* src_mask */ | |
1138 | 0xfffc, /* dst_mask */ | |
1139 | FALSE), /* pcrel_offset */ | |
1140 | ||
1141 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1142 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1143 | 0, /* rightshift */ | |
1144 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1145 | 16, /* bitsize */ | |
1146 | FALSE, /* pc_relative */ | |
1147 | 0, /* bitpos */ | |
1148 | complain_overflow_signed, /* complain_on_overflow */ | |
1149 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1150 | "R_PPC64_GOT16_DS", /* name */ | |
1151 | FALSE, /* partial_inplace */ | |
1152 | 0, /* src_mask */ | |
1153 | 0xfffc, /* dst_mask */ | |
1154 | FALSE), /* pcrel_offset */ | |
1155 | ||
1156 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1157 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1158 | 0, /* rightshift */ | |
1159 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1160 | 16, /* bitsize */ | |
1161 | FALSE, /* pc_relative */ | |
1162 | 0, /* bitpos */ | |
1163 | complain_overflow_dont, /* complain_on_overflow */ | |
1164 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1165 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1166 | FALSE, /* partial_inplace */ | |
1167 | 0, /* src_mask */ | |
1168 | 0xfffc, /* dst_mask */ | |
1169 | FALSE), /* pcrel_offset */ | |
1170 | ||
1171 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1172 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1173 | 0, /* rightshift */ | |
1174 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1175 | 16, /* bitsize */ | |
1176 | FALSE, /* pc_relative */ | |
1177 | 0, /* bitpos */ | |
1178 | complain_overflow_dont, /* complain_on_overflow */ | |
1179 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1180 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1181 | FALSE, /* partial_inplace */ | |
1182 | 0, /* src_mask */ | |
1183 | 0xfffc, /* dst_mask */ | |
1184 | FALSE), /* pcrel_offset */ | |
1185 | ||
1186 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1187 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1188 | 0, /* rightshift */ | |
1189 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1190 | 16, /* bitsize */ | |
1191 | FALSE, /* pc_relative */ | |
1192 | 0, /* bitpos */ | |
b80eed39 | 1193 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1194 | ppc64_elf_sectoff_reloc, /* special_function */ |
1195 | "R_PPC64_SECTOFF_DS", /* name */ | |
1196 | FALSE, /* partial_inplace */ | |
1197 | 0, /* src_mask */ | |
1198 | 0xfffc, /* dst_mask */ | |
1199 | FALSE), /* pcrel_offset */ | |
1200 | ||
1201 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1202 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1203 | 0, /* rightshift */ | |
1204 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1205 | 16, /* bitsize */ | |
1206 | FALSE, /* pc_relative */ | |
1207 | 0, /* bitpos */ | |
1208 | complain_overflow_dont, /* complain_on_overflow */ | |
1209 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1210 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1211 | FALSE, /* partial_inplace */ | |
1212 | 0, /* src_mask */ | |
1213 | 0xfffc, /* dst_mask */ | |
1214 | FALSE), /* pcrel_offset */ | |
1215 | ||
1216 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1217 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1218 | 0, /* rightshift */ | |
1219 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1220 | 16, /* bitsize */ | |
1221 | FALSE, /* pc_relative */ | |
1222 | 0, /* bitpos */ | |
1223 | complain_overflow_signed, /* complain_on_overflow */ | |
1224 | ppc64_elf_toc_reloc, /* special_function */ | |
1225 | "R_PPC64_TOC16_DS", /* name */ | |
1226 | FALSE, /* partial_inplace */ | |
1227 | 0, /* src_mask */ | |
1228 | 0xfffc, /* dst_mask */ | |
1229 | FALSE), /* pcrel_offset */ | |
1230 | ||
1231 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1232 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1233 | 0, /* rightshift */ | |
1234 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1235 | 16, /* bitsize */ | |
1236 | FALSE, /* pc_relative */ | |
1237 | 0, /* bitpos */ | |
1238 | complain_overflow_dont, /* complain_on_overflow */ | |
1239 | ppc64_elf_toc_reloc, /* special_function */ | |
1240 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1241 | FALSE, /* partial_inplace */ | |
1242 | 0, /* src_mask */ | |
1243 | 0xfffc, /* dst_mask */ | |
1244 | FALSE), /* pcrel_offset */ | |
1245 | ||
1246 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1247 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1248 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1249 | 0, /* rightshift */ |
1250 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1251 | 16, /* bitsize */ | |
1252 | FALSE, /* pc_relative */ | |
1253 | 0, /* bitpos */ | |
1254 | complain_overflow_signed, /* complain_on_overflow */ | |
1255 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1256 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1257 | FALSE, /* partial_inplace */ | |
1258 | 0, /* src_mask */ | |
1259 | 0xfffc, /* dst_mask */ | |
1260 | FALSE), /* pcrel_offset */ | |
1261 | ||
1262 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1263 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1264 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1265 | 0, /* rightshift */ | |
1266 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1267 | 16, /* bitsize */ | |
1268 | FALSE, /* pc_relative */ | |
1269 | 0, /* bitpos */ | |
1270 | complain_overflow_dont, /* complain_on_overflow */ | |
1271 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1272 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1273 | FALSE, /* partial_inplace */ | |
1274 | 0, /* src_mask */ | |
1275 | 0xfffc, /* dst_mask */ | |
1276 | FALSE), /* pcrel_offset */ | |
1277 | ||
727fc41e | 1278 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1279 | HOWTO (R_PPC64_TLS, |
1280 | 0, /* rightshift */ | |
1281 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1282 | 32, /* bitsize */ | |
1283 | FALSE, /* pc_relative */ | |
1284 | 0, /* bitpos */ | |
1285 | complain_overflow_dont, /* complain_on_overflow */ | |
1286 | bfd_elf_generic_reloc, /* special_function */ | |
1287 | "R_PPC64_TLS", /* name */ | |
1288 | FALSE, /* partial_inplace */ | |
1289 | 0, /* src_mask */ | |
1290 | 0, /* dst_mask */ | |
1291 | FALSE), /* pcrel_offset */ | |
1292 | ||
727fc41e AM |
1293 | HOWTO (R_PPC64_TLSGD, |
1294 | 0, /* rightshift */ | |
1295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1296 | 32, /* bitsize */ | |
1297 | FALSE, /* pc_relative */ | |
1298 | 0, /* bitpos */ | |
1299 | complain_overflow_dont, /* complain_on_overflow */ | |
1300 | bfd_elf_generic_reloc, /* special_function */ | |
1301 | "R_PPC64_TLSGD", /* name */ | |
1302 | FALSE, /* partial_inplace */ | |
1303 | 0, /* src_mask */ | |
1304 | 0, /* dst_mask */ | |
1305 | FALSE), /* pcrel_offset */ | |
1306 | ||
1307 | HOWTO (R_PPC64_TLSLD, | |
1308 | 0, /* rightshift */ | |
1309 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1310 | 32, /* bitsize */ | |
1311 | FALSE, /* pc_relative */ | |
1312 | 0, /* bitpos */ | |
1313 | complain_overflow_dont, /* complain_on_overflow */ | |
1314 | bfd_elf_generic_reloc, /* special_function */ | |
1315 | "R_PPC64_TLSLD", /* name */ | |
1316 | FALSE, /* partial_inplace */ | |
1317 | 0, /* src_mask */ | |
1318 | 0, /* dst_mask */ | |
1319 | FALSE), /* pcrel_offset */ | |
1320 | ||
3b421ab3 AM |
1321 | HOWTO (R_PPC64_TOCSAVE, |
1322 | 0, /* rightshift */ | |
1323 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1324 | 32, /* bitsize */ | |
1325 | FALSE, /* pc_relative */ | |
1326 | 0, /* bitpos */ | |
1327 | complain_overflow_dont, /* complain_on_overflow */ | |
1328 | bfd_elf_generic_reloc, /* special_function */ | |
1329 | "R_PPC64_TOCSAVE", /* name */ | |
1330 | FALSE, /* partial_inplace */ | |
1331 | 0, /* src_mask */ | |
1332 | 0, /* dst_mask */ | |
1333 | FALSE), /* pcrel_offset */ | |
1334 | ||
411e1bfb AM |
1335 | /* Computes the load module index of the load module that contains the |
1336 | definition of its TLS sym. */ | |
1337 | HOWTO (R_PPC64_DTPMOD64, | |
1338 | 0, /* rightshift */ | |
1339 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1340 | 64, /* bitsize */ | |
1341 | FALSE, /* pc_relative */ | |
1342 | 0, /* bitpos */ | |
1343 | complain_overflow_dont, /* complain_on_overflow */ | |
1344 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1345 | "R_PPC64_DTPMOD64", /* name */ | |
1346 | FALSE, /* partial_inplace */ | |
1347 | 0, /* src_mask */ | |
1348 | ONES (64), /* dst_mask */ | |
1349 | FALSE), /* pcrel_offset */ | |
1350 | ||
1351 | /* Computes a dtv-relative displacement, the difference between the value | |
1352 | of sym+add and the base address of the thread-local storage block that | |
1353 | contains the definition of sym, minus 0x8000. */ | |
1354 | HOWTO (R_PPC64_DTPREL64, | |
1355 | 0, /* rightshift */ | |
1356 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1357 | 64, /* bitsize */ | |
1358 | FALSE, /* pc_relative */ | |
1359 | 0, /* bitpos */ | |
1360 | complain_overflow_dont, /* complain_on_overflow */ | |
1361 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1362 | "R_PPC64_DTPREL64", /* name */ | |
1363 | FALSE, /* partial_inplace */ | |
1364 | 0, /* src_mask */ | |
1365 | ONES (64), /* dst_mask */ | |
1366 | FALSE), /* pcrel_offset */ | |
1367 | ||
1368 | /* A 16 bit dtprel reloc. */ | |
1369 | HOWTO (R_PPC64_DTPREL16, | |
1370 | 0, /* rightshift */ | |
1371 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1372 | 16, /* bitsize */ | |
1373 | FALSE, /* pc_relative */ | |
1374 | 0, /* bitpos */ | |
1375 | complain_overflow_signed, /* complain_on_overflow */ | |
1376 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1377 | "R_PPC64_DTPREL16", /* name */ | |
1378 | FALSE, /* partial_inplace */ | |
1379 | 0, /* src_mask */ | |
1380 | 0xffff, /* dst_mask */ | |
1381 | FALSE), /* pcrel_offset */ | |
1382 | ||
1383 | /* Like DTPREL16, but no overflow. */ | |
1384 | HOWTO (R_PPC64_DTPREL16_LO, | |
1385 | 0, /* rightshift */ | |
1386 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1387 | 16, /* bitsize */ | |
1388 | FALSE, /* pc_relative */ | |
1389 | 0, /* bitpos */ | |
1390 | complain_overflow_dont, /* complain_on_overflow */ | |
1391 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1392 | "R_PPC64_DTPREL16_LO", /* name */ | |
1393 | FALSE, /* partial_inplace */ | |
1394 | 0, /* src_mask */ | |
1395 | 0xffff, /* dst_mask */ | |
1396 | FALSE), /* pcrel_offset */ | |
1397 | ||
1398 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1399 | HOWTO (R_PPC64_DTPREL16_HI, | |
1400 | 16, /* rightshift */ | |
1401 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1402 | 16, /* bitsize */ | |
1403 | FALSE, /* pc_relative */ | |
1404 | 0, /* bitpos */ | |
f9c6b907 | 1405 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1406 | ppc64_elf_unhandled_reloc, /* special_function */ |
1407 | "R_PPC64_DTPREL16_HI", /* name */ | |
1408 | FALSE, /* partial_inplace */ | |
1409 | 0, /* src_mask */ | |
1410 | 0xffff, /* dst_mask */ | |
1411 | FALSE), /* pcrel_offset */ | |
1412 | ||
1413 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1414 | HOWTO (R_PPC64_DTPREL16_HA, | |
1415 | 16, /* rightshift */ | |
1416 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1417 | 16, /* bitsize */ | |
1418 | FALSE, /* pc_relative */ | |
1419 | 0, /* bitpos */ | |
f9c6b907 | 1420 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1421 | ppc64_elf_unhandled_reloc, /* special_function */ |
1422 | "R_PPC64_DTPREL16_HA", /* name */ | |
1423 | FALSE, /* partial_inplace */ | |
1424 | 0, /* src_mask */ | |
1425 | 0xffff, /* dst_mask */ | |
1426 | FALSE), /* pcrel_offset */ | |
1427 | ||
1428 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1429 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1430 | 32, /* rightshift */ | |
1431 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1432 | 16, /* bitsize */ | |
1433 | FALSE, /* pc_relative */ | |
1434 | 0, /* bitpos */ | |
1435 | complain_overflow_dont, /* complain_on_overflow */ | |
1436 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1437 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1438 | FALSE, /* partial_inplace */ | |
1439 | 0, /* src_mask */ | |
1440 | 0xffff, /* dst_mask */ | |
1441 | FALSE), /* pcrel_offset */ | |
1442 | ||
1443 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1444 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1445 | 32, /* rightshift */ | |
1446 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1447 | 16, /* bitsize */ | |
1448 | FALSE, /* pc_relative */ | |
1449 | 0, /* bitpos */ | |
1450 | complain_overflow_dont, /* complain_on_overflow */ | |
1451 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1452 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1453 | FALSE, /* partial_inplace */ | |
1454 | 0, /* src_mask */ | |
1455 | 0xffff, /* dst_mask */ | |
1456 | FALSE), /* pcrel_offset */ | |
1457 | ||
1458 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1459 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1460 | 48, /* rightshift */ | |
1461 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1462 | 16, /* bitsize */ | |
1463 | FALSE, /* pc_relative */ | |
1464 | 0, /* bitpos */ | |
1465 | complain_overflow_dont, /* complain_on_overflow */ | |
1466 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1467 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1468 | FALSE, /* partial_inplace */ | |
1469 | 0, /* src_mask */ | |
1470 | 0xffff, /* dst_mask */ | |
1471 | FALSE), /* pcrel_offset */ | |
1472 | ||
1473 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1474 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1475 | 48, /* rightshift */ | |
1476 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1477 | 16, /* bitsize */ | |
1478 | FALSE, /* pc_relative */ | |
1479 | 0, /* bitpos */ | |
1480 | complain_overflow_dont, /* complain_on_overflow */ | |
1481 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1482 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1483 | FALSE, /* partial_inplace */ | |
1484 | 0, /* src_mask */ | |
1485 | 0xffff, /* dst_mask */ | |
1486 | FALSE), /* pcrel_offset */ | |
1487 | ||
1488 | /* Like DTPREL16, but for insns with a DS field. */ | |
1489 | HOWTO (R_PPC64_DTPREL16_DS, | |
1490 | 0, /* rightshift */ | |
1491 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1492 | 16, /* bitsize */ | |
1493 | FALSE, /* pc_relative */ | |
1494 | 0, /* bitpos */ | |
1495 | complain_overflow_signed, /* complain_on_overflow */ | |
1496 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1497 | "R_PPC64_DTPREL16_DS", /* name */ | |
1498 | FALSE, /* partial_inplace */ | |
1499 | 0, /* src_mask */ | |
1500 | 0xfffc, /* dst_mask */ | |
1501 | FALSE), /* pcrel_offset */ | |
1502 | ||
1503 | /* Like DTPREL16_DS, but no overflow. */ | |
1504 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1505 | 0, /* rightshift */ | |
1506 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1507 | 16, /* bitsize */ | |
1508 | FALSE, /* pc_relative */ | |
1509 | 0, /* bitpos */ | |
1510 | complain_overflow_dont, /* complain_on_overflow */ | |
1511 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1512 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1513 | FALSE, /* partial_inplace */ | |
1514 | 0, /* src_mask */ | |
1515 | 0xfffc, /* dst_mask */ | |
1516 | FALSE), /* pcrel_offset */ | |
1517 | ||
1518 | /* Computes a tp-relative displacement, the difference between the value of | |
1519 | sym+add and the value of the thread pointer (r13). */ | |
1520 | HOWTO (R_PPC64_TPREL64, | |
1521 | 0, /* rightshift */ | |
1522 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1523 | 64, /* bitsize */ | |
1524 | FALSE, /* pc_relative */ | |
1525 | 0, /* bitpos */ | |
1526 | complain_overflow_dont, /* complain_on_overflow */ | |
1527 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1528 | "R_PPC64_TPREL64", /* name */ | |
1529 | FALSE, /* partial_inplace */ | |
1530 | 0, /* src_mask */ | |
1531 | ONES (64), /* dst_mask */ | |
1532 | FALSE), /* pcrel_offset */ | |
1533 | ||
1534 | /* A 16 bit tprel reloc. */ | |
1535 | HOWTO (R_PPC64_TPREL16, | |
1536 | 0, /* rightshift */ | |
1537 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1538 | 16, /* bitsize */ | |
1539 | FALSE, /* pc_relative */ | |
1540 | 0, /* bitpos */ | |
1541 | complain_overflow_signed, /* complain_on_overflow */ | |
1542 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1543 | "R_PPC64_TPREL16", /* name */ | |
1544 | FALSE, /* partial_inplace */ | |
1545 | 0, /* src_mask */ | |
1546 | 0xffff, /* dst_mask */ | |
1547 | FALSE), /* pcrel_offset */ | |
1548 | ||
1549 | /* Like TPREL16, but no overflow. */ | |
1550 | HOWTO (R_PPC64_TPREL16_LO, | |
1551 | 0, /* rightshift */ | |
1552 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1553 | 16, /* bitsize */ | |
1554 | FALSE, /* pc_relative */ | |
1555 | 0, /* bitpos */ | |
1556 | complain_overflow_dont, /* complain_on_overflow */ | |
1557 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1558 | "R_PPC64_TPREL16_LO", /* name */ | |
1559 | FALSE, /* partial_inplace */ | |
1560 | 0, /* src_mask */ | |
1561 | 0xffff, /* dst_mask */ | |
1562 | FALSE), /* pcrel_offset */ | |
1563 | ||
1564 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1565 | HOWTO (R_PPC64_TPREL16_HI, | |
1566 | 16, /* rightshift */ | |
1567 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1568 | 16, /* bitsize */ | |
1569 | FALSE, /* pc_relative */ | |
1570 | 0, /* bitpos */ | |
f9c6b907 | 1571 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1572 | ppc64_elf_unhandled_reloc, /* special_function */ |
1573 | "R_PPC64_TPREL16_HI", /* name */ | |
1574 | FALSE, /* partial_inplace */ | |
1575 | 0, /* src_mask */ | |
1576 | 0xffff, /* dst_mask */ | |
1577 | FALSE), /* pcrel_offset */ | |
1578 | ||
1579 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1580 | HOWTO (R_PPC64_TPREL16_HA, | |
1581 | 16, /* rightshift */ | |
1582 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1583 | 16, /* bitsize */ | |
1584 | FALSE, /* pc_relative */ | |
1585 | 0, /* bitpos */ | |
f9c6b907 | 1586 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1587 | ppc64_elf_unhandled_reloc, /* special_function */ |
1588 | "R_PPC64_TPREL16_HA", /* name */ | |
1589 | FALSE, /* partial_inplace */ | |
1590 | 0, /* src_mask */ | |
1591 | 0xffff, /* dst_mask */ | |
1592 | FALSE), /* pcrel_offset */ | |
1593 | ||
1594 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1595 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1596 | 32, /* rightshift */ | |
1597 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1598 | 16, /* bitsize */ | |
1599 | FALSE, /* pc_relative */ | |
1600 | 0, /* bitpos */ | |
1601 | complain_overflow_dont, /* complain_on_overflow */ | |
1602 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1603 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1604 | FALSE, /* partial_inplace */ | |
1605 | 0, /* src_mask */ | |
1606 | 0xffff, /* dst_mask */ | |
1607 | FALSE), /* pcrel_offset */ | |
1608 | ||
1609 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1610 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1611 | 32, /* rightshift */ | |
1612 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1613 | 16, /* bitsize */ | |
1614 | FALSE, /* pc_relative */ | |
1615 | 0, /* bitpos */ | |
1616 | complain_overflow_dont, /* complain_on_overflow */ | |
1617 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1618 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1619 | FALSE, /* partial_inplace */ | |
1620 | 0, /* src_mask */ | |
1621 | 0xffff, /* dst_mask */ | |
1622 | FALSE), /* pcrel_offset */ | |
1623 | ||
1624 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1625 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1626 | 48, /* rightshift */ | |
1627 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1628 | 16, /* bitsize */ | |
1629 | FALSE, /* pc_relative */ | |
1630 | 0, /* bitpos */ | |
1631 | complain_overflow_dont, /* complain_on_overflow */ | |
1632 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1633 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1634 | FALSE, /* partial_inplace */ | |
1635 | 0, /* src_mask */ | |
1636 | 0xffff, /* dst_mask */ | |
1637 | FALSE), /* pcrel_offset */ | |
1638 | ||
1639 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1640 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1641 | 48, /* rightshift */ | |
1642 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1643 | 16, /* bitsize */ | |
1644 | FALSE, /* pc_relative */ | |
1645 | 0, /* bitpos */ | |
1646 | complain_overflow_dont, /* complain_on_overflow */ | |
1647 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1648 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1649 | FALSE, /* partial_inplace */ | |
1650 | 0, /* src_mask */ | |
1651 | 0xffff, /* dst_mask */ | |
1652 | FALSE), /* pcrel_offset */ | |
1653 | ||
1654 | /* Like TPREL16, but for insns with a DS field. */ | |
1655 | HOWTO (R_PPC64_TPREL16_DS, | |
1656 | 0, /* rightshift */ | |
1657 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1658 | 16, /* bitsize */ | |
1659 | FALSE, /* pc_relative */ | |
1660 | 0, /* bitpos */ | |
1661 | complain_overflow_signed, /* complain_on_overflow */ | |
1662 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1663 | "R_PPC64_TPREL16_DS", /* name */ | |
1664 | FALSE, /* partial_inplace */ | |
1665 | 0, /* src_mask */ | |
1666 | 0xfffc, /* dst_mask */ | |
1667 | FALSE), /* pcrel_offset */ | |
1668 | ||
1669 | /* Like TPREL16_DS, but no overflow. */ | |
1670 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1671 | 0, /* rightshift */ | |
1672 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1673 | 16, /* bitsize */ | |
1674 | FALSE, /* pc_relative */ | |
1675 | 0, /* bitpos */ | |
1676 | complain_overflow_dont, /* complain_on_overflow */ | |
1677 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1678 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1679 | FALSE, /* partial_inplace */ | |
1680 | 0, /* src_mask */ | |
1681 | 0xfffc, /* dst_mask */ | |
1682 | FALSE), /* pcrel_offset */ | |
1683 | ||
1684 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1685 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1686 | to the first entry relative to the TOC base (r2). */ | |
1687 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1688 | 0, /* rightshift */ | |
1689 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1690 | 16, /* bitsize */ | |
1691 | FALSE, /* pc_relative */ | |
1692 | 0, /* bitpos */ | |
1693 | complain_overflow_signed, /* complain_on_overflow */ | |
1694 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1695 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1696 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1697 | 0, /* src_mask */ |
1698 | 0xffff, /* dst_mask */ | |
b34976b6 | 1699 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1700 | |
411e1bfb AM |
1701 | /* Like GOT_TLSGD16, but no overflow. */ |
1702 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1703 | 0, /* rightshift */ |
1704 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1705 | 16, /* bitsize */ | |
b34976b6 | 1706 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1707 | 0, /* bitpos */ |
1708 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1709 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1710 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1711 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1712 | 0, /* src_mask */ |
1713 | 0xffff, /* dst_mask */ | |
b34976b6 | 1714 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1715 | |
411e1bfb AM |
1716 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1717 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1718 | 16, /* rightshift */ |
1719 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1720 | 16, /* bitsize */ | |
b34976b6 | 1721 | FALSE, /* pc_relative */ |
5bd4f169 | 1722 | 0, /* bitpos */ |
f9c6b907 | 1723 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1724 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1725 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1726 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1727 | 0, /* src_mask */ |
1728 | 0xffff, /* dst_mask */ | |
b34976b6 | 1729 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1730 | |
411e1bfb AM |
1731 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1732 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1733 | 16, /* rightshift */ |
1734 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1735 | 16, /* bitsize */ | |
b34976b6 | 1736 | FALSE, /* pc_relative */ |
5bd4f169 | 1737 | 0, /* bitpos */ |
f9c6b907 | 1738 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1739 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1740 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1741 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1742 | 0, /* src_mask */ |
1743 | 0xffff, /* dst_mask */ | |
b34976b6 | 1744 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1745 | |
411e1bfb AM |
1746 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1747 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1748 | first entry relative to the TOC base (r2). */ | |
1749 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1750 | 0, /* rightshift */ |
1751 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1752 | 16, /* bitsize */ | |
b34976b6 | 1753 | FALSE, /* pc_relative */ |
5bd4f169 | 1754 | 0, /* bitpos */ |
411e1bfb AM |
1755 | complain_overflow_signed, /* complain_on_overflow */ |
1756 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1757 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1758 | FALSE, /* partial_inplace */ |
d006db6c | 1759 | 0, /* src_mask */ |
411e1bfb | 1760 | 0xffff, /* dst_mask */ |
b34976b6 | 1761 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1762 | |
411e1bfb AM |
1763 | /* Like GOT_TLSLD16, but no overflow. */ |
1764 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1765 | 0, /* rightshift */ |
1766 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1767 | 16, /* bitsize */ | |
b34976b6 | 1768 | FALSE, /* pc_relative */ |
5bd4f169 | 1769 | 0, /* bitpos */ |
411e1bfb AM |
1770 | complain_overflow_dont, /* complain_on_overflow */ |
1771 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1772 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1773 | FALSE, /* partial_inplace */ |
d006db6c | 1774 | 0, /* src_mask */ |
411e1bfb | 1775 | 0xffff, /* dst_mask */ |
b34976b6 | 1776 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1777 | |
411e1bfb AM |
1778 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1779 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1780 | 16, /* rightshift */ | |
5bd4f169 AM |
1781 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1782 | 16, /* bitsize */ | |
b34976b6 | 1783 | FALSE, /* pc_relative */ |
5bd4f169 | 1784 | 0, /* bitpos */ |
f9c6b907 | 1785 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1786 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1787 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1788 | FALSE, /* partial_inplace */ |
d006db6c | 1789 | 0, /* src_mask */ |
411e1bfb | 1790 | 0xffff, /* dst_mask */ |
b34976b6 | 1791 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1792 | |
411e1bfb AM |
1793 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1794 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1795 | 16, /* rightshift */ | |
5bd4f169 AM |
1796 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1797 | 16, /* bitsize */ | |
b34976b6 | 1798 | FALSE, /* pc_relative */ |
5bd4f169 | 1799 | 0, /* bitpos */ |
f9c6b907 | 1800 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1801 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1802 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1803 | FALSE, /* partial_inplace */ |
d006db6c | 1804 | 0, /* src_mask */ |
411e1bfb | 1805 | 0xffff, /* dst_mask */ |
b34976b6 | 1806 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1807 | |
411e1bfb AM |
1808 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1809 | the offset to the entry relative to the TOC base (r2). */ | |
1810 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1811 | 0, /* rightshift */ |
1812 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1813 | 16, /* bitsize */ | |
b34976b6 | 1814 | FALSE, /* pc_relative */ |
5bd4f169 | 1815 | 0, /* bitpos */ |
411e1bfb | 1816 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1817 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1818 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1819 | FALSE, /* partial_inplace */ |
d006db6c | 1820 | 0, /* src_mask */ |
5bd4f169 | 1821 | 0xfffc, /* dst_mask */ |
b34976b6 | 1822 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1823 | |
411e1bfb AM |
1824 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1825 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1826 | 0, /* rightshift */ |
c061c2d8 AM |
1827 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1828 | 16, /* bitsize */ | |
b34976b6 | 1829 | FALSE, /* pc_relative */ |
5bd4f169 | 1830 | 0, /* bitpos */ |
411e1bfb AM |
1831 | complain_overflow_dont, /* complain_on_overflow */ |
1832 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1833 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1834 | FALSE, /* partial_inplace */ |
d006db6c | 1835 | 0, /* src_mask */ |
c061c2d8 | 1836 | 0xfffc, /* dst_mask */ |
b34976b6 | 1837 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1838 | |
411e1bfb AM |
1839 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1840 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1841 | 16, /* rightshift */ | |
5bd4f169 AM |
1842 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1843 | 16, /* bitsize */ | |
b34976b6 | 1844 | FALSE, /* pc_relative */ |
5bd4f169 | 1845 | 0, /* bitpos */ |
f9c6b907 | 1846 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1847 | ppc64_elf_unhandled_reloc, /* special_function */ |
1848 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1849 | FALSE, /* partial_inplace */ |
d006db6c | 1850 | 0, /* src_mask */ |
411e1bfb | 1851 | 0xffff, /* dst_mask */ |
b34976b6 | 1852 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1853 | |
411e1bfb AM |
1854 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1855 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1856 | 16, /* rightshift */ | |
1857 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1858 | 16, /* bitsize */ | |
1859 | FALSE, /* pc_relative */ | |
1860 | 0, /* bitpos */ | |
f9c6b907 | 1861 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1862 | ppc64_elf_unhandled_reloc, /* special_function */ |
1863 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1864 | FALSE, /* partial_inplace */ | |
1865 | 0, /* src_mask */ | |
1866 | 0xffff, /* dst_mask */ | |
1867 | FALSE), /* pcrel_offset */ | |
1868 | ||
1869 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1870 | offset to the entry relative to the TOC base (r2). */ | |
1871 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1872 | 0, /* rightshift */ |
1873 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1874 | 16, /* bitsize */ | |
b34976b6 | 1875 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1876 | 0, /* bitpos */ |
1877 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1878 | ppc64_elf_unhandled_reloc, /* special_function */ |
1879 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1880 | FALSE, /* partial_inplace */ |
d006db6c | 1881 | 0, /* src_mask */ |
ad8e1ba5 | 1882 | 0xfffc, /* dst_mask */ |
b34976b6 | 1883 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1884 | |
411e1bfb AM |
1885 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1886 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1887 | 0, /* rightshift */ |
1888 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1889 | 16, /* bitsize */ | |
b34976b6 | 1890 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1891 | 0, /* bitpos */ |
1892 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1893 | ppc64_elf_unhandled_reloc, /* special_function */ |
1894 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1895 | FALSE, /* partial_inplace */ |
d006db6c | 1896 | 0, /* src_mask */ |
ad8e1ba5 | 1897 | 0xfffc, /* dst_mask */ |
b34976b6 | 1898 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1899 | |
411e1bfb AM |
1900 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1901 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1902 | 16, /* rightshift */ | |
5bd4f169 AM |
1903 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1904 | 16, /* bitsize */ | |
b34976b6 | 1905 | FALSE, /* pc_relative */ |
5bd4f169 | 1906 | 0, /* bitpos */ |
f9c6b907 | 1907 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1908 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1909 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1910 | FALSE, /* partial_inplace */ |
d006db6c | 1911 | 0, /* src_mask */ |
411e1bfb | 1912 | 0xffff, /* dst_mask */ |
b34976b6 | 1913 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1914 | |
411e1bfb AM |
1915 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1916 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1917 | 16, /* rightshift */ | |
5bd4f169 AM |
1918 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1919 | 16, /* bitsize */ | |
b34976b6 | 1920 | FALSE, /* pc_relative */ |
5bd4f169 | 1921 | 0, /* bitpos */ |
f9c6b907 | 1922 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1923 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1924 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1925 | FALSE, /* partial_inplace */ |
d006db6c | 1926 | 0, /* src_mask */ |
411e1bfb | 1927 | 0xffff, /* dst_mask */ |
b34976b6 | 1928 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1929 | |
25f23106 AM |
1930 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1931 | 0, /* rightshift */ | |
1932 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1933 | 0, /* bitsize */ | |
1934 | FALSE, /* pc_relative */ | |
1935 | 0, /* bitpos */ | |
1936 | complain_overflow_dont, /* complain_on_overflow */ | |
1937 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1938 | "R_PPC64_JMP_IREL", /* name */ | |
1939 | FALSE, /* partial_inplace */ | |
1940 | 0, /* src_mask */ | |
1941 | 0, /* dst_mask */ | |
1942 | FALSE), /* pcrel_offset */ | |
1943 | ||
e054468f AM |
1944 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1945 | 0, /* rightshift */ | |
1946 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1947 | 64, /* bitsize */ | |
1948 | FALSE, /* pc_relative */ | |
1949 | 0, /* bitpos */ | |
1950 | complain_overflow_dont, /* complain_on_overflow */ | |
1951 | bfd_elf_generic_reloc, /* special_function */ | |
1952 | "R_PPC64_IRELATIVE", /* name */ | |
1953 | FALSE, /* partial_inplace */ | |
1954 | 0, /* src_mask */ | |
1955 | ONES (64), /* dst_mask */ | |
1956 | FALSE), /* pcrel_offset */ | |
1957 | ||
25f23106 AM |
1958 | /* A 16 bit relative relocation. */ |
1959 | HOWTO (R_PPC64_REL16, /* type */ | |
1960 | 0, /* rightshift */ | |
1961 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1962 | 16, /* bitsize */ | |
1963 | TRUE, /* pc_relative */ | |
1964 | 0, /* bitpos */ | |
b80eed39 | 1965 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1966 | bfd_elf_generic_reloc, /* special_function */ |
1967 | "R_PPC64_REL16", /* name */ | |
1968 | FALSE, /* partial_inplace */ | |
1969 | 0, /* src_mask */ | |
1970 | 0xffff, /* dst_mask */ | |
1971 | TRUE), /* pcrel_offset */ | |
1972 | ||
1973 | /* A 16 bit relative relocation without overflow. */ | |
1974 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1975 | 0, /* rightshift */ | |
1976 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1977 | 16, /* bitsize */ | |
1978 | TRUE, /* pc_relative */ | |
1979 | 0, /* bitpos */ | |
1980 | complain_overflow_dont,/* complain_on_overflow */ | |
1981 | bfd_elf_generic_reloc, /* special_function */ | |
1982 | "R_PPC64_REL16_LO", /* name */ | |
1983 | FALSE, /* partial_inplace */ | |
1984 | 0, /* src_mask */ | |
1985 | 0xffff, /* dst_mask */ | |
1986 | TRUE), /* pcrel_offset */ | |
1987 | ||
1988 | /* The high order 16 bits of a relative address. */ | |
1989 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1990 | 16, /* rightshift */ | |
1991 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1992 | 16, /* bitsize */ | |
1993 | TRUE, /* pc_relative */ | |
1994 | 0, /* bitpos */ | |
f9c6b907 | 1995 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
1996 | bfd_elf_generic_reloc, /* special_function */ |
1997 | "R_PPC64_REL16_HI", /* name */ | |
1998 | FALSE, /* partial_inplace */ | |
1999 | 0, /* src_mask */ | |
2000 | 0xffff, /* dst_mask */ | |
2001 | TRUE), /* pcrel_offset */ | |
2002 | ||
2003 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2004 | the low 16 bits, treated as a signed number, is negative. */ | |
2005 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2006 | 16, /* rightshift */ | |
2007 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2008 | 16, /* bitsize */ | |
2009 | TRUE, /* pc_relative */ | |
2010 | 0, /* bitpos */ | |
f9c6b907 | 2011 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2012 | ppc64_elf_ha_reloc, /* special_function */ |
2013 | "R_PPC64_REL16_HA", /* name */ | |
2014 | FALSE, /* partial_inplace */ | |
2015 | 0, /* src_mask */ | |
2016 | 0xffff, /* dst_mask */ | |
2017 | TRUE), /* pcrel_offset */ | |
2018 | ||
f9c6b907 AM |
2019 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2020 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2021 | 16, /* rightshift */ | |
2022 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2023 | 16, /* bitsize */ | |
2024 | FALSE, /* pc_relative */ | |
2025 | 0, /* bitpos */ | |
2026 | complain_overflow_dont, /* complain_on_overflow */ | |
2027 | bfd_elf_generic_reloc, /* special_function */ | |
2028 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2029 | FALSE, /* partial_inplace */ | |
2030 | 0, /* src_mask */ | |
2031 | 0xffff, /* dst_mask */ | |
2032 | FALSE), /* pcrel_offset */ | |
2033 | ||
2034 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2035 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2036 | 16, /* rightshift */ | |
2037 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2038 | 16, /* bitsize */ | |
2039 | FALSE, /* pc_relative */ | |
2040 | 0, /* bitpos */ | |
2041 | complain_overflow_dont, /* complain_on_overflow */ | |
2042 | ppc64_elf_ha_reloc, /* special_function */ | |
2043 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2044 | FALSE, /* partial_inplace */ | |
2045 | 0, /* src_mask */ | |
2046 | 0xffff, /* dst_mask */ | |
2047 | FALSE), /* pcrel_offset */ | |
2048 | ||
2049 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2050 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2051 | 16, /* rightshift */ | |
2052 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2053 | 16, /* bitsize */ | |
2054 | FALSE, /* pc_relative */ | |
2055 | 0, /* bitpos */ | |
2056 | complain_overflow_dont, /* complain_on_overflow */ | |
2057 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2058 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2059 | FALSE, /* partial_inplace */ | |
2060 | 0, /* src_mask */ | |
2061 | 0xffff, /* dst_mask */ | |
2062 | FALSE), /* pcrel_offset */ | |
2063 | ||
2064 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2065 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2066 | 16, /* rightshift */ | |
2067 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2068 | 16, /* bitsize */ | |
2069 | FALSE, /* pc_relative */ | |
2070 | 0, /* bitpos */ | |
2071 | complain_overflow_dont, /* complain_on_overflow */ | |
2072 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2073 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2074 | FALSE, /* partial_inplace */ | |
2075 | 0, /* src_mask */ | |
2076 | 0xffff, /* dst_mask */ | |
2077 | FALSE), /* pcrel_offset */ | |
2078 | ||
2079 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2080 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2081 | 16, /* rightshift */ | |
2082 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2083 | 16, /* bitsize */ | |
2084 | FALSE, /* pc_relative */ | |
2085 | 0, /* bitpos */ | |
2086 | complain_overflow_dont, /* complain_on_overflow */ | |
2087 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2088 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2089 | FALSE, /* partial_inplace */ | |
2090 | 0, /* src_mask */ | |
2091 | 0xffff, /* dst_mask */ | |
2092 | FALSE), /* pcrel_offset */ | |
2093 | ||
2094 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2095 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2096 | 16, /* rightshift */ | |
2097 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2098 | 16, /* bitsize */ | |
2099 | FALSE, /* pc_relative */ | |
2100 | 0, /* bitpos */ | |
2101 | complain_overflow_dont, /* complain_on_overflow */ | |
2102 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2103 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2104 | FALSE, /* partial_inplace */ | |
2105 | 0, /* src_mask */ | |
2106 | 0xffff, /* dst_mask */ | |
2107 | FALSE), /* pcrel_offset */ | |
2108 | ||
45965137 AM |
2109 | /* Like ADDR64, but use local entry point of function. */ |
2110 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2111 | 0, /* rightshift */ | |
2112 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2113 | 64, /* bitsize */ | |
2114 | FALSE, /* pc_relative */ | |
2115 | 0, /* bitpos */ | |
2116 | complain_overflow_dont, /* complain_on_overflow */ | |
2117 | bfd_elf_generic_reloc, /* special_function */ | |
2118 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2119 | FALSE, /* partial_inplace */ | |
2120 | 0, /* src_mask */ | |
2121 | ONES (64), /* dst_mask */ | |
2122 | FALSE), /* pcrel_offset */ | |
2123 | ||
5bd4f169 AM |
2124 | /* GNU extension to record C++ vtable hierarchy. */ |
2125 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2126 | 0, /* rightshift */ | |
2127 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2128 | 0, /* bitsize */ | |
b34976b6 | 2129 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2130 | 0, /* bitpos */ |
2131 | complain_overflow_dont, /* complain_on_overflow */ | |
2132 | NULL, /* special_function */ | |
2133 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2134 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2135 | 0, /* src_mask */ |
2136 | 0, /* dst_mask */ | |
b34976b6 | 2137 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2138 | |
2139 | /* GNU extension to record C++ vtable member usage. */ | |
2140 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2141 | 0, /* rightshift */ | |
2142 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2143 | 0, /* bitsize */ | |
b34976b6 | 2144 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2145 | 0, /* bitpos */ |
2146 | complain_overflow_dont, /* complain_on_overflow */ | |
2147 | NULL, /* special_function */ | |
2148 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2149 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2150 | 0, /* src_mask */ |
2151 | 0, /* dst_mask */ | |
b34976b6 | 2152 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2153 | }; |
2154 | ||
2155 | \f | |
2156 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2157 | be done. */ | |
2158 | ||
2159 | static void | |
4ce794b7 | 2160 | ppc_howto_init (void) |
5bd4f169 AM |
2161 | { |
2162 | unsigned int i, type; | |
2163 | ||
2164 | for (i = 0; | |
2165 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2166 | i++) | |
2167 | { | |
2168 | type = ppc64_elf_howto_raw[i].type; | |
2169 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2170 | / sizeof (ppc64_elf_howto_table[0]))); | |
2171 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2172 | } | |
2173 | } | |
2174 | ||
2175 | static reloc_howto_type * | |
4ce794b7 AM |
2176 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2177 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2178 | { |
411e1bfb | 2179 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2180 | |
2181 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2182 | /* Initialize howto table if needed. */ | |
2183 | ppc_howto_init (); | |
2184 | ||
4ce794b7 | 2185 | switch (code) |
5bd4f169 AM |
2186 | { |
2187 | default: | |
4ce794b7 | 2188 | return NULL; |
5bd4f169 | 2189 | |
411e1bfb AM |
2190 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2191 | break; | |
2192 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2193 | break; | |
2194 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2195 | break; | |
2196 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2197 | break; | |
2198 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2199 | break; | |
2200 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2201 | break; | |
f9c6b907 AM |
2202 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2203 | break; | |
411e1bfb | 2204 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2205 | break; |
f9c6b907 AM |
2206 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2207 | break; | |
411e1bfb | 2208 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2209 | break; |
411e1bfb | 2210 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2211 | break; |
411e1bfb | 2212 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2213 | break; |
411e1bfb | 2214 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2215 | break; |
411e1bfb | 2216 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2217 | break; |
411e1bfb | 2218 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2219 | break; |
411e1bfb | 2220 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2221 | break; |
411e1bfb | 2222 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2223 | break; |
411e1bfb | 2224 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2225 | break; |
411e1bfb | 2226 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2227 | break; |
411e1bfb | 2228 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2229 | break; |
411e1bfb | 2230 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2231 | break; |
411e1bfb | 2232 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2233 | break; |
411e1bfb | 2234 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2235 | break; |
411e1bfb | 2236 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2237 | break; |
411e1bfb | 2238 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2239 | break; |
411e1bfb | 2240 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2241 | break; |
411e1bfb | 2242 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2243 | break; |
411e1bfb | 2244 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2245 | break; |
411e1bfb | 2246 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2247 | break; |
411e1bfb | 2248 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2249 | break; |
411e1bfb | 2250 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2251 | break; |
411e1bfb | 2252 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2253 | break; |
411e1bfb | 2254 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2255 | break; |
411e1bfb | 2256 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2257 | break; |
411e1bfb | 2258 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2259 | break; |
411e1bfb | 2260 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2261 | break; |
411e1bfb | 2262 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2263 | break; |
411e1bfb | 2264 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2265 | break; |
411e1bfb | 2266 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2267 | break; |
411e1bfb | 2268 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2269 | break; |
411e1bfb | 2270 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2271 | break; |
411e1bfb | 2272 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2273 | break; |
411e1bfb | 2274 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2275 | break; |
411e1bfb | 2276 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2277 | break; |
411e1bfb | 2278 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2279 | break; |
411e1bfb | 2280 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2281 | break; |
411e1bfb | 2282 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2283 | break; |
411e1bfb | 2284 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2285 | break; |
411e1bfb | 2286 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2287 | break; |
411e1bfb | 2288 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2289 | break; |
411e1bfb | 2290 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2291 | break; |
411e1bfb | 2292 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2293 | break; |
411e1bfb | 2294 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2295 | break; |
411e1bfb | 2296 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2297 | break; |
411e1bfb | 2298 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2299 | break; |
411e1bfb | 2300 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2301 | break; |
411e1bfb | 2302 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2303 | break; |
411e1bfb | 2304 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2305 | break; |
411e1bfb | 2306 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2307 | break; |
411e1bfb | 2308 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2309 | break; |
411e1bfb | 2310 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2311 | break; |
411e1bfb | 2312 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2313 | break; |
727fc41e AM |
2314 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2315 | break; | |
2316 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2317 | break; | |
411e1bfb | 2318 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2319 | break; |
411e1bfb | 2320 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2321 | break; |
411e1bfb | 2322 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2323 | break; |
411e1bfb | 2324 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2325 | break; |
f9c6b907 AM |
2326 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2327 | break; | |
411e1bfb | 2328 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2329 | break; |
f9c6b907 AM |
2330 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2331 | break; | |
411e1bfb | 2332 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2333 | break; |
411e1bfb AM |
2334 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2335 | break; | |
2336 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2337 | break; | |
2338 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2339 | break; | |
f9c6b907 AM |
2340 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2341 | break; | |
411e1bfb AM |
2342 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2343 | break; | |
f9c6b907 AM |
2344 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2345 | break; | |
411e1bfb AM |
2346 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2347 | break; | |
2348 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2349 | break; | |
2350 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2351 | break; | |
2352 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2353 | break; | |
2354 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2355 | break; | |
2356 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2357 | break; | |
2358 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2359 | break; | |
2360 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2361 | break; | |
2362 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2363 | break; | |
2364 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2365 | break; | |
2366 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2367 | break; | |
2368 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2369 | break; | |
2370 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2371 | break; | |
2372 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2373 | break; | |
2374 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2375 | break; | |
2376 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2377 | break; | |
2378 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2379 | break; | |
2380 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2381 | break; | |
2382 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2383 | break; | |
2384 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2385 | break; | |
2386 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2387 | break; | |
2388 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2389 | break; | |
2390 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2391 | break; | |
2392 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2393 | break; | |
2394 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2395 | break; | |
2396 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2397 | break; | |
2398 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2399 | break; | |
2400 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2401 | break; | |
2402 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2403 | break; | |
25f23106 AM |
2404 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2405 | break; | |
2406 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2407 | break; | |
2408 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2409 | break; | |
2410 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2411 | break; | |
45965137 AM |
2412 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2413 | break; | |
411e1bfb AM |
2414 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2415 | break; | |
2416 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2417 | break; |
2418 | } | |
2419 | ||
4ce794b7 | 2420 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2421 | }; |
2422 | ||
157090f7 AM |
2423 | static reloc_howto_type * |
2424 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2425 | const char *r_name) | |
2426 | { | |
2427 | unsigned int i; | |
2428 | ||
2429 | for (i = 0; | |
2430 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2431 | i++) | |
2432 | if (ppc64_elf_howto_raw[i].name != NULL | |
2433 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2434 | return &ppc64_elf_howto_raw[i]; | |
2435 | ||
2436 | return NULL; | |
2437 | } | |
2438 | ||
5bd4f169 AM |
2439 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2440 | ||
2441 | static void | |
4ce794b7 AM |
2442 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2443 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2444 | { |
65f38f15 AM |
2445 | unsigned int type; |
2446 | ||
ef60b7ff | 2447 | /* Initialize howto table if needed. */ |
5bd4f169 | 2448 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2449 | ppc_howto_init (); |
2450 | ||
65f38f15 | 2451 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2452 | if (type >= (sizeof (ppc64_elf_howto_table) |
2453 | / sizeof (ppc64_elf_howto_table[0]))) | |
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 | { | |
74f0fb50 AM |
2957 | /* An array with one entry for each opd function descriptor. */ |
2958 | struct _opd_sec_data | |
2959 | { | |
2960 | /* Points to the function code section for local opd entries. */ | |
2961 | asection **func_sec; | |
2962 | ||
2963 | /* After editing .opd, adjust references to opd local syms. */ | |
2964 | long *adjust; | |
2965 | } opd; | |
7c8fe5c4 | 2966 | |
3a71aa26 AM |
2967 | /* An array for toc sections, indexed by offset/8. */ |
2968 | struct _toc_sec_data | |
2969 | { | |
2970 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2971 | unsigned *symndx; | |
2972 | ||
2973 | /* And the relocation addend. */ | |
2974 | bfd_vma *add; | |
2975 | } toc; | |
7c8fe5c4 AM |
2976 | } u; |
2977 | ||
2978 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2979 | |
7c8fe5c4 AM |
2980 | /* Flag set when small branches are detected. Used to |
2981 | select suitable defaults for the stub group size. */ | |
2982 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2983 | }; |
2984 | ||
2985 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2986 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2987 | |
2988 | static bfd_boolean | |
4ce794b7 | 2989 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2990 | { |
f592407e AM |
2991 | if (!sec->used_by_bfd) |
2992 | { | |
2993 | struct _ppc64_elf_section_data *sdata; | |
2994 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2995 | |
f592407e AM |
2996 | sdata = bfd_zalloc (abfd, amt); |
2997 | if (sdata == NULL) | |
2998 | return FALSE; | |
2999 | sec->used_by_bfd = sdata; | |
3000 | } | |
f0abc2a1 AM |
3001 | |
3002 | return _bfd_elf_new_section_hook (abfd, sec); | |
3003 | } | |
4025353c | 3004 | |
74f0fb50 | 3005 | static struct _opd_sec_data * |
4025353c AM |
3006 | get_opd_info (asection * sec) |
3007 | { | |
3008 | if (sec != NULL | |
3009 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3010 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3011 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3012 | return NULL; |
3013 | } | |
90e3cdf2 JJ |
3014 | \f |
3015 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
3016 | static bfd_boolean synthetic_relocatable; |
3017 | ||
699733f6 | 3018 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3019 | |
3020 | static int | |
3021 | compare_symbols (const void *ap, const void *bp) | |
3022 | { | |
3023 | const asymbol *a = * (const asymbol **) ap; | |
3024 | const asymbol *b = * (const asymbol **) bp; | |
3025 | ||
699733f6 AM |
3026 | /* Section symbols first. */ |
3027 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3028 | return -1; |
699733f6 | 3029 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3030 | return 1; |
3031 | ||
699733f6 | 3032 | /* then .opd symbols. */ |
ffcfec52 AM |
3033 | if (strcmp (a->section->name, ".opd") == 0 |
3034 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 3035 | return -1; |
ffcfec52 AM |
3036 | if (strcmp (a->section->name, ".opd") != 0 |
3037 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
3038 | return 1; |
3039 | ||
699733f6 | 3040 | /* then other code symbols. */ |
90e3cdf2 JJ |
3041 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3042 | == (SEC_CODE | SEC_ALLOC) | |
3043 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3044 | != (SEC_CODE | SEC_ALLOC)) | |
3045 | return -1; | |
3046 | ||
3047 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3048 | != (SEC_CODE | SEC_ALLOC) | |
3049 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3050 | == (SEC_CODE | SEC_ALLOC)) | |
3051 | return 1; | |
3052 | ||
3053 | if (synthetic_relocatable) | |
3054 | { | |
3055 | if (a->section->id < b->section->id) | |
3056 | return -1; | |
3057 | ||
3058 | if (a->section->id > b->section->id) | |
3059 | return 1; | |
3060 | } | |
3061 | ||
3062 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3063 | return -1; | |
3064 | ||
3065 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3066 | return 1; | |
3067 | ||
4d35a0aa AM |
3068 | /* For syms with the same value, prefer strong dynamic global function |
3069 | syms over other syms. */ | |
3070 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3071 | return -1; | |
3072 | ||
3073 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3074 | return 1; | |
3075 | ||
3076 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3077 | return -1; | |
3078 | ||
3079 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3080 | return 1; | |
3081 | ||
3082 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3083 | return -1; | |
3084 | ||
3085 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3086 | return 1; | |
3087 | ||
3088 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3089 | return -1; | |
3090 | ||
3091 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3092 | return 1; | |
3093 | ||
90e3cdf2 JJ |
3094 | return 0; |
3095 | } | |
3096 | ||
699733f6 | 3097 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3098 | |
699733f6 AM |
3099 | static asymbol * |
3100 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 3101 | { |
699733f6 | 3102 | long mid; |
90e3cdf2 | 3103 | |
699733f6 AM |
3104 | if (id == -1) |
3105 | { | |
3106 | while (lo < hi) | |
3107 | { | |
3108 | mid = (lo + hi) >> 1; | |
3109 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3110 | lo = mid + 1; | |
3111 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3112 | hi = mid; | |
3113 | else | |
3114 | return syms[mid]; | |
3115 | } | |
3116 | } | |
3117 | else | |
3118 | { | |
3119 | while (lo < hi) | |
3120 | { | |
3121 | mid = (lo + hi) >> 1; | |
3122 | if (syms[mid]->section->id < id) | |
3123 | lo = mid + 1; | |
3124 | else if (syms[mid]->section->id > id) | |
3125 | hi = mid; | |
3126 | else if (syms[mid]->value < value) | |
3127 | lo = mid + 1; | |
3128 | else if (syms[mid]->value > value) | |
3129 | hi = mid; | |
3130 | else | |
3131 | return syms[mid]; | |
3132 | } | |
3133 | } | |
3134 | return NULL; | |
90e3cdf2 JJ |
3135 | } |
3136 | ||
468392fb AM |
3137 | static bfd_boolean |
3138 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3139 | { | |
3140 | bfd_vma vma = *(bfd_vma *) ptr; | |
3141 | return ((section->flags & SEC_ALLOC) != 0 | |
3142 | && section->vma <= vma | |
3143 | && vma < section->vma + section->size); | |
3144 | } | |
3145 | ||
699733f6 | 3146 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 3147 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
3148 | |
3149 | static long | |
a7535cf3 AM |
3150 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3151 | long static_count, asymbol **static_syms, | |
3152 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3153 | asymbol **ret) |
90e3cdf2 JJ |
3154 | { |
3155 | asymbol *s; | |
699733f6 AM |
3156 | long i; |
3157 | long count; | |
90e3cdf2 | 3158 | char *names; |
a7535cf3 | 3159 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3160 | asection *opd = NULL; |
90e3cdf2 | 3161 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3162 | asymbol **syms; |
ee67d69a | 3163 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3164 | |
3165 | *ret = NULL; | |
3166 | ||
ee67d69a AM |
3167 | if (abi < 2) |
3168 | { | |
3169 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3170 | if (opd == NULL && abi == 1) | |
3171 | return 0; | |
3172 | } | |
90e3cdf2 | 3173 | |
a7535cf3 | 3174 | symcount = static_count; |
c9727e01 | 3175 | if (!relocatable) |
a7535cf3 | 3176 | symcount += dyn_count; |
90e3cdf2 | 3177 | if (symcount == 0) |
c9727e01 | 3178 | return 0; |
90e3cdf2 | 3179 | |
a7535cf3 AM |
3180 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3181 | if (syms == NULL) | |
7356fed5 | 3182 | return -1; |
a7535cf3 AM |
3183 | |
3184 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3185 | { | |
3186 | /* Use both symbol tables. */ | |
3187 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3188 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3189 | } | |
3190 | else if (!relocatable && static_count == 0) | |
3191 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3192 | else | |
3193 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3194 | ||
90e3cdf2 | 3195 | synthetic_relocatable = relocatable; |
595da8c5 | 3196 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3197 | |
c9727e01 AM |
3198 | if (!relocatable && symcount > 1) |
3199 | { | |
3200 | long j; | |
3201 | /* Trim duplicate syms, since we may have merged the normal and | |
3202 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3203 | different values, so trim any with the same value. */ |
c9727e01 AM |
3204 | for (i = 1, j = 1; i < symcount; ++i) |
3205 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3206 | != syms[i]->value + syms[i]->section->vma) | |
3207 | syms[j++] = syms[i]; | |
3208 | symcount = j; | |
3209 | } | |
3210 | ||
699733f6 | 3211 | i = 0; |
ffcfec52 | 3212 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3213 | ++i; |
3214 | codesecsym = i; | |
90e3cdf2 | 3215 | |
699733f6 AM |
3216 | for (; i < symcount; ++i) |
3217 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3218 | != (SEC_CODE | SEC_ALLOC)) | |
3219 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3220 | break; | |
3221 | codesecsymend = i; | |
90e3cdf2 | 3222 | |
699733f6 AM |
3223 | for (; i < symcount; ++i) |
3224 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3225 | break; | |
3226 | secsymend = i; | |
90e3cdf2 | 3227 | |
699733f6 | 3228 | for (; i < symcount; ++i) |
ffcfec52 | 3229 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3230 | break; |
3231 | opdsymend = i; | |
90e3cdf2 | 3232 | |
699733f6 AM |
3233 | for (; i < symcount; ++i) |
3234 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3235 | != (SEC_CODE | SEC_ALLOC)) | |
3236 | break; | |
3237 | symcount = i; | |
3238 | ||
c9727e01 | 3239 | count = 0; |
90e3cdf2 | 3240 | |
699733f6 | 3241 | if (relocatable) |
90e3cdf2 | 3242 | { |
699733f6 AM |
3243 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3244 | arelent *r; | |
3245 | size_t size; | |
3246 | long relcount; | |
90e3cdf2 | 3247 | |
468392fb AM |
3248 | if (opdsymend == secsymend) |
3249 | goto done; | |
3250 | ||
699733f6 | 3251 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3252 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3253 | if (relcount == 0) |
c9727e01 | 3254 | goto done; |
90e3cdf2 | 3255 | |
7356fed5 AM |
3256 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3257 | { | |
3258 | count = -1; | |
3259 | goto done; | |
3260 | } | |
3261 | ||
699733f6 | 3262 | size = 0; |
595da8c5 | 3263 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3264 | { |
3265 | asymbol *sym; | |
90e3cdf2 | 3266 | |
595da8c5 | 3267 | while (r < opd->relocation + relcount |
699733f6 AM |
3268 | && r->address < syms[i]->value + opd->vma) |
3269 | ++r; | |
90e3cdf2 | 3270 | |
595da8c5 | 3271 | if (r == opd->relocation + relcount) |
699733f6 | 3272 | break; |
90e3cdf2 | 3273 | |
699733f6 AM |
3274 | if (r->address != syms[i]->value + opd->vma) |
3275 | continue; | |
90e3cdf2 | 3276 | |
699733f6 AM |
3277 | if (r->howto->type != R_PPC64_ADDR64) |
3278 | continue; | |
90e3cdf2 | 3279 | |
699733f6 AM |
3280 | sym = *r->sym_ptr_ptr; |
3281 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3282 | sym->section->id, sym->value + r->addend)) | |
3283 | { | |
3284 | ++count; | |
3285 | size += sizeof (asymbol); | |
3286 | size += strlen (syms[i]->name) + 2; | |
3287 | } | |
3288 | } | |
90e3cdf2 | 3289 | |
699733f6 AM |
3290 | s = *ret = bfd_malloc (size); |
3291 | if (s == NULL) | |
3292 | { | |
7356fed5 | 3293 | count = -1; |
c9727e01 | 3294 | goto done; |
699733f6 | 3295 | } |
90e3cdf2 | 3296 | |
699733f6 | 3297 | names = (char *) (s + count); |
90e3cdf2 | 3298 | |
595da8c5 | 3299 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3300 | { |
699733f6 | 3301 | asymbol *sym; |
90e3cdf2 | 3302 | |
595da8c5 | 3303 | while (r < opd->relocation + relcount |
699733f6 AM |
3304 | && r->address < syms[i]->value + opd->vma) |
3305 | ++r; | |
90e3cdf2 | 3306 | |
595da8c5 | 3307 | if (r == opd->relocation + relcount) |
699733f6 AM |
3308 | break; |
3309 | ||
3310 | if (r->address != syms[i]->value + opd->vma) | |
3311 | continue; | |
3312 | ||
3313 | if (r->howto->type != R_PPC64_ADDR64) | |
3314 | continue; | |
90e3cdf2 | 3315 | |
699733f6 AM |
3316 | sym = *r->sym_ptr_ptr; |
3317 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3318 | sym->section->id, sym->value + r->addend)) | |
3319 | { | |
3320 | size_t len; | |
3321 | ||
3322 | *s = *syms[i]; | |
6ba2a415 | 3323 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3324 | s->section = sym->section; |
3325 | s->value = sym->value + r->addend; | |
3326 | s->name = names; | |
3327 | *names++ = '.'; | |
3328 | len = strlen (syms[i]->name); | |
3329 | memcpy (names, syms[i]->name, len + 1); | |
3330 | names += len + 1; | |
6f610d07 UW |
3331 | /* Have udata.p point back to the original symbol this |
3332 | synthetic symbol was derived from. */ | |
3333 | s->udata.p = syms[i]; | |
699733f6 AM |
3334 | s++; |
3335 | } | |
3336 | } | |
3337 | } | |
3338 | else | |
90e3cdf2 | 3339 | { |
468392fb | 3340 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3341 | bfd_byte *contents = NULL; |
699733f6 | 3342 | size_t size; |
468392fb AM |
3343 | long plt_count = 0; |
3344 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3345 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3346 | arelent *p; | |
90e3cdf2 | 3347 | |
ee67d69a | 3348 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3349 | { |
ee67d69a | 3350 | free_contents_and_exit: |
699733f6 | 3351 | if (contents) |
ee67d69a | 3352 | free (contents); |
7356fed5 | 3353 | count = -1; |
c9727e01 | 3354 | goto done; |
699733f6 | 3355 | } |
90e3cdf2 | 3356 | |
699733f6 AM |
3357 | size = 0; |
3358 | for (i = secsymend; i < opdsymend; ++i) | |
3359 | { | |
3360 | bfd_vma ent; | |
90e3cdf2 | 3361 | |
5ef11c02 AM |
3362 | /* Ignore bogus symbols. */ |
3363 | if (syms[i]->value > opd->size - 8) | |
3364 | continue; | |
3365 | ||
699733f6 AM |
3366 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3367 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3368 | { | |
3369 | ++count; | |
3370 | size += sizeof (asymbol); | |
3371 | size += strlen (syms[i]->name) + 2; | |
3372 | } | |
3373 | } | |
90e3cdf2 | 3374 | |
468392fb | 3375 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3376 | if (dyn_count != 0 |
3377 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3378 | { |
3379 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3380 | size_t extdynsize; | |
3381 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3382 | ||
3383 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3384 | goto free_contents_and_exit; | |
3385 | ||
3386 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3387 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3388 | ||
3389 | extdyn = dynbuf; | |
3390 | extdynend = extdyn + dynamic->size; | |
3391 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3392 | { | |
3393 | Elf_Internal_Dyn dyn; | |
3394 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3395 | ||
3396 | if (dyn.d_tag == DT_NULL) | |
3397 | break; | |
3398 | ||
3399 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3400 | { | |
b9e5796b AM |
3401 | /* The first glink stub starts at offset 32; see |
3402 | comment in ppc64_elf_finish_dynamic_sections. */ | |
3403 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
468392fb AM |
3404 | /* The .glink section usually does not survive the final |
3405 | link; search for the section (usually .text) where the | |
3406 | glink stubs now reside. */ | |
3407 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3408 | &glink_vma); | |
3409 | break; | |
3410 | } | |
3411 | } | |
3412 | ||
3413 | free (dynbuf); | |
3414 | } | |
3415 | ||
3416 | if (glink != NULL) | |
3417 | { | |
3418 | /* Determine __glink trampoline by reading the relative branch | |
3419 | from the first glink stub. */ | |
3420 | bfd_byte buf[4]; | |
b9e5796b AM |
3421 | unsigned int off = 0; |
3422 | ||
3423 | while (bfd_get_section_contents (abfd, glink, buf, | |
3424 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3425 | { |
3426 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3427 | insn ^= B_DOT; | |
3428 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3429 | { |
3430 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3431 | break; | |
3432 | } | |
3433 | off += 4; | |
3434 | if (off > 4) | |
3435 | break; | |
468392fb AM |
3436 | } |
3437 | ||
3438 | if (resolv_vma) | |
3439 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3440 | |
066ee829 AM |
3441 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3442 | if (relplt != NULL) | |
3443 | { | |
3444 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3445 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3446 | goto free_contents_and_exit; | |
68ffbac6 | 3447 | |
066ee829 AM |
3448 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3449 | size += plt_count * sizeof (asymbol); | |
468392fb | 3450 | |
066ee829 AM |
3451 | p = relplt->relocation; |
3452 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3453 | { |
3454 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3455 | if (p->addend != 0) | |
3456 | size += sizeof ("+0x") - 1 + 16; | |
3457 | } | |
066ee829 | 3458 | } |
468392fb AM |
3459 | } |
3460 | ||
699733f6 AM |
3461 | s = *ret = bfd_malloc (size); |
3462 | if (s == NULL) | |
7356fed5 | 3463 | goto free_contents_and_exit; |
90e3cdf2 | 3464 | |
468392fb | 3465 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3466 | |
699733f6 | 3467 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3468 | { |
699733f6 | 3469 | bfd_vma ent; |
90e3cdf2 | 3470 | |
5ef11c02 AM |
3471 | if (syms[i]->value > opd->size - 8) |
3472 | continue; | |
3473 | ||
699733f6 AM |
3474 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3475 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3476 | { |
c9727e01 | 3477 | long lo, hi; |
699733f6 | 3478 | size_t len; |
c9727e01 | 3479 | asection *sec = abfd->sections; |
90e3cdf2 | 3480 | |
699733f6 AM |
3481 | *s = *syms[i]; |
3482 | lo = codesecsym; | |
3483 | hi = codesecsymend; | |
3484 | while (lo < hi) | |
3485 | { | |
c9727e01 | 3486 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3487 | if (syms[mid]->section->vma < ent) |
3488 | lo = mid + 1; | |
3489 | else if (syms[mid]->section->vma > ent) | |
3490 | hi = mid; | |
3491 | else | |
c9727e01 AM |
3492 | { |
3493 | sec = syms[mid]->section; | |
3494 | break; | |
3495 | } | |
699733f6 AM |
3496 | } |
3497 | ||
c9727e01 | 3498 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3499 | sec = syms[lo - 1]->section; |
699733f6 AM |
3500 | |
3501 | for (; sec != NULL; sec = sec->next) | |
3502 | { | |
3503 | if (sec->vma > ent) | |
3504 | break; | |
63524580 JK |
3505 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3506 | info file. */ | |
3507 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3508 | break; |
3509 | if ((sec->flags & SEC_CODE) != 0) | |
3510 | s->section = sec; | |
3511 | } | |
6ba2a415 | 3512 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3513 | s->value = ent - s->section->vma; |
3514 | s->name = names; | |
3515 | *names++ = '.'; | |
3516 | len = strlen (syms[i]->name); | |
3517 | memcpy (names, syms[i]->name, len + 1); | |
3518 | names += len + 1; | |
6f610d07 UW |
3519 | /* Have udata.p point back to the original symbol this |
3520 | synthetic symbol was derived from. */ | |
3521 | s->udata.p = syms[i]; | |
699733f6 | 3522 | s++; |
90e3cdf2 | 3523 | } |
90e3cdf2 | 3524 | } |
699733f6 | 3525 | free (contents); |
468392fb AM |
3526 | |
3527 | if (glink != NULL && relplt != NULL) | |
3528 | { | |
3529 | if (resolv_vma) | |
3530 | { | |
3531 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3532 | memset (s, 0, sizeof *s); |
468392fb | 3533 | s->the_bfd = abfd; |
6ba2a415 | 3534 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3535 | s->section = glink; |
3536 | s->value = resolv_vma - glink->vma; | |
3537 | s->name = names; | |
3538 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3539 | names += sizeof ("__glink_PLTresolve"); | |
3540 | s++; | |
3541 | count++; | |
3542 | } | |
3543 | ||
3544 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3545 | stub rather than on the glink branch table entry. The | |
3546 | objdump disassembler would then use a sensible symbol | |
3547 | name on plt calls. The difficulty in doing so is | |
3548 | a) finding the stubs, and, | |
3549 | b) matching stubs against plt entries, and, | |
3550 | c) there can be multiple stubs for a given plt entry. | |
3551 | ||
3552 | Solving (a) could be done by code scanning, but older | |
3553 | ppc64 binaries used different stubs to current code. | |
3554 | (b) is the tricky one since you need to known the toc | |
3555 | pointer for at least one function that uses a pic stub to | |
3556 | be able to calculate the plt address referenced. | |
3557 | (c) means gdb would need to set multiple breakpoints (or | |
3558 | find the glink branch itself) when setting breakpoints | |
3559 | for pending shared library loads. */ | |
3560 | p = relplt->relocation; | |
3561 | for (i = 0; i < plt_count; i++, p++) | |
3562 | { | |
3563 | size_t len; | |
3564 | ||
3565 | *s = **p->sym_ptr_ptr; | |
3566 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3567 | we are defining a symbol, ensure one of them is set. */ | |
3568 | if ((s->flags & BSF_LOCAL) == 0) | |
3569 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3570 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3571 | s->section = glink; |
3572 | s->value = glink_vma - glink->vma; | |
3573 | s->name = names; | |
3574 | s->udata.p = NULL; | |
3575 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3576 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3577 | names += len; | |
e054468f AM |
3578 | if (p->addend != 0) |
3579 | { | |
3580 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3581 | names += sizeof ("+0x") - 1; | |
3582 | bfd_sprintf_vma (abfd, names, p->addend); | |
3583 | names += strlen (names); | |
3584 | } | |
468392fb AM |
3585 | memcpy (names, "@plt", sizeof ("@plt")); |
3586 | names += sizeof ("@plt"); | |
3587 | s++; | |
b9e5796b AM |
3588 | if (abi < 2) |
3589 | { | |
3590 | glink_vma += 8; | |
3591 | if (i >= 0x8000) | |
3592 | glink_vma += 4; | |
3593 | } | |
3594 | else | |
468392fb AM |
3595 | glink_vma += 4; |
3596 | } | |
3597 | count += plt_count; | |
3598 | } | |
90e3cdf2 JJ |
3599 | } |
3600 | ||
c9727e01 | 3601 | done: |
a7535cf3 | 3602 | free (syms); |
90e3cdf2 JJ |
3603 | return count; |
3604 | } | |
5bd4f169 | 3605 | \f |
65f38f15 AM |
3606 | /* The following functions are specific to the ELF linker, while |
3607 | functions above are used generally. Those named ppc64_elf_* are | |
3608 | called by the main ELF linker code. They appear in this file more | |
3609 | or less in the order in which they are called. eg. | |
3610 | ppc64_elf_check_relocs is called early in the link process, | |
3611 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3612 | called. |
3613 | ||
3614 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3615 | functions have both a function code symbol and a function descriptor | |
3616 | symbol. A call to foo in a relocatable object file looks like: | |
3617 | ||
3618 | . .text | |
3619 | . x: | |
3620 | . bl .foo | |
3621 | . nop | |
3622 | ||
3623 | The function definition in another object file might be: | |
3624 | ||
3625 | . .section .opd | |
3626 | . foo: .quad .foo | |
3627 | . .quad .TOC.@tocbase | |
3628 | . .quad 0 | |
3629 | . | |
3630 | . .text | |
3631 | . .foo: blr | |
3632 | ||
3633 | When the linker resolves the call during a static link, the branch | |
3634 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3635 | If the function definition is in a shared library, things are a little | |
3636 | different: The call goes via a plt call stub, the opd information gets | |
3637 | copied to the plt, and the linker patches the nop. | |
3638 | ||
3639 | . x: | |
3640 | . bl .foo_stub | |
3641 | . ld 2,40(1) | |
3642 | . | |
3643 | . | |
3644 | . .foo_stub: | |
71a39c98 AM |
3645 | . std 2,40(1) # in practice, the call stub |
3646 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3647 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3648 | . ld 12,0(11) | |
3649 | . ld 2,8(11) | |
3650 | . mtctr 12 | |
3651 | . ld 11,16(11) | |
e86ce104 AM |
3652 | . bctr |
3653 | . | |
3654 | . .section .plt | |
3655 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3656 | ||
3657 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3658 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3659 | copying. | |
3660 | ||
3661 | What are the difficulties here? Well, firstly, the relocations | |
3662 | examined by the linker in check_relocs are against the function code | |
3663 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3664 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3665 | to carefully copy dynamic link information from one symbol to the other. | |
3666 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3667 | symbol as is normal for most other backends. We need foo dynamic | |
3668 | instead, at least for an application final link. However, when | |
3669 | creating a shared library containing foo, we need to have both symbols | |
3670 | dynamic so that references to .foo are satisfied during the early | |
3671 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3672 | definition from some other object, eg. a static library. |
3673 | ||
3674 | Update: As of August 2004, we support a new convention. Function | |
3675 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3676 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3677 | |
1d483afe | 3678 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3679 | selects those that must be copied when linking a shared library, |
3680 | even when the symbol is local. */ | |
65f38f15 | 3681 | |
1d483afe AM |
3682 | static int |
3683 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3684 | enum elf_ppc64_reloc_type r_type) | |
3685 | { | |
3686 | switch (r_type) | |
3687 | { | |
3688 | default: | |
3689 | return 1; | |
3690 | ||
3691 | case R_PPC64_REL32: | |
3692 | case R_PPC64_REL64: | |
3693 | case R_PPC64_REL30: | |
3694 | return 0; | |
3695 | ||
3696 | case R_PPC64_TPREL16: | |
3697 | case R_PPC64_TPREL16_LO: | |
3698 | case R_PPC64_TPREL16_HI: | |
3699 | case R_PPC64_TPREL16_HA: | |
3700 | case R_PPC64_TPREL16_DS: | |
3701 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3702 | case R_PPC64_TPREL16_HIGH: |
3703 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3704 | case R_PPC64_TPREL16_HIGHER: |
3705 | case R_PPC64_TPREL16_HIGHERA: | |
3706 | case R_PPC64_TPREL16_HIGHEST: | |
3707 | case R_PPC64_TPREL16_HIGHESTA: | |
3708 | case R_PPC64_TPREL64: | |
3709 | return !info->executable; | |
3710 | } | |
3711 | } | |
65f38f15 | 3712 | |
f4656909 AM |
3713 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3714 | copying dynamic variables from a shared lib into an app's dynbss | |
3715 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3716 | shared lib. With code that gcc generates, it's vital that this be |
3717 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3718 | the address of a function descriptor, which resides in the .opd | |
3719 | section. gcc uses the descriptor directly rather than going via the | |
3720 | GOT as some other ABI's do, which means that initialized function | |
3721 | pointers must reference the descriptor. Thus, a function pointer | |
3722 | initialized to the address of a function in a shared library will | |
3723 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3724 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3725 | presents a problem as a plt entry for that function is also |
3726 | initialized from the function descriptor symbol and the copy reloc | |
3727 | may not be initialized first. */ | |
a23b6845 | 3728 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3729 | |
721956f4 | 3730 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3731 | string. */ |
3732 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3733 | |
3734 | /* Linker stubs. | |
3735 | ppc_stub_long_branch: | |
3736 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3737 | destination, but a 24 bit branch in a stub section will reach. | |
3738 | . b dest | |
3739 | ||
3740 | ppc_stub_plt_branch: | |
3741 | Similar to the above, but a 24 bit branch in the stub section won't | |
3742 | reach its destination. | |
71a39c98 AM |
3743 | . addis %r11,%r2,xxx@toc@ha |
3744 | . ld %r12,xxx@toc@l(%r11) | |
3745 | . mtctr %r12 | |
721956f4 AM |
3746 | . bctr |
3747 | ||
3748 | ppc_stub_plt_call: | |
2c66dc6c AM |
3749 | Used to call a function in a shared library. If it so happens that |
3750 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3751 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3752 | . std %r2,40(%r1) |
71a39c98 AM |
3753 | . addis %r11,%r2,xxx@toc@ha |
3754 | . ld %r12,xxx+0@toc@l(%r11) | |
3755 | . mtctr %r12 | |
3756 | . ld %r2,xxx+8@toc@l(%r11) | |
3757 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3758 | . bctr |
ad8e1ba5 AM |
3759 | |
3760 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3761 | code to adjust the value and save r2 to support multiple toc sections. | |
3762 | A ppc_stub_long_branch with an r2 offset looks like: | |
3763 | . std %r2,40(%r1) | |
3764 | . addis %r2,%r2,off@ha | |
3765 | . addi %r2,%r2,off@l | |
3766 | . b dest | |
3767 | ||
3768 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3769 | . std %r2,40(%r1) | |
71a39c98 AM |
3770 | . addis %r11,%r2,xxx@toc@ha |
3771 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3772 | . addis %r2,%r2,off@ha |
3773 | . addi %r2,%r2,off@l | |
71a39c98 | 3774 | . mtctr %r12 |
ad8e1ba5 | 3775 | . bctr |
ac2df442 AM |
3776 | |
3777 | In cases where the "addis" instruction would add zero, the "addis" is | |
3778 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3779 | */ |
3780 | ||
3781 | enum ppc_stub_type { | |
3782 | ppc_stub_none, | |
3783 | ppc_stub_long_branch, | |
ad8e1ba5 | 3784 | ppc_stub_long_branch_r2off, |
721956f4 | 3785 | ppc_stub_plt_branch, |
ad8e1ba5 | 3786 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3787 | ppc_stub_plt_call, |
7341d5e2 AM |
3788 | ppc_stub_plt_call_r2save, |
3789 | ppc_stub_global_entry | |
721956f4 AM |
3790 | }; |
3791 | ||
3792 | struct ppc_stub_hash_entry { | |
3793 | ||
3794 | /* Base hash table entry structure. */ | |
3795 | struct bfd_hash_entry root; | |
3796 | ||
ad8e1ba5 AM |
3797 | enum ppc_stub_type stub_type; |
3798 | ||
721956f4 AM |
3799 | /* The stub section. */ |
3800 | asection *stub_sec; | |
3801 | ||
3802 | /* Offset within stub_sec of the beginning of this stub. */ | |
3803 | bfd_vma stub_offset; | |
3804 | ||
3805 | /* Given the symbol's value and its section we can determine its final | |
3806 | value when building the stubs (so the stub knows where to jump. */ | |
3807 | bfd_vma target_value; | |
3808 | asection *target_section; | |
3809 | ||
721956f4 AM |
3810 | /* The symbol table entry, if any, that this was derived from. */ |
3811 | struct ppc_link_hash_entry *h; | |
e054468f | 3812 | struct plt_entry *plt_ent; |
721956f4 AM |
3813 | |
3814 | /* Where this stub is being called from, or, in the case of combined | |
3815 | stub sections, the first input section in the group. */ | |
3816 | asection *id_sec; | |
6911b7dc AM |
3817 | |
3818 | /* Symbol st_other. */ | |
3819 | unsigned char other; | |
721956f4 AM |
3820 | }; |
3821 | ||
3822 | struct ppc_branch_hash_entry { | |
3823 | ||
3824 | /* Base hash table entry structure. */ | |
3825 | struct bfd_hash_entry root; | |
3826 | ||
c456f082 | 3827 | /* Offset within branch lookup table. */ |
721956f4 AM |
3828 | unsigned int offset; |
3829 | ||
3830 | /* Generation marker. */ | |
3831 | unsigned int iter; | |
3832 | }; | |
65f38f15 | 3833 | |
19e08130 AM |
3834 | /* Used to track dynamic relocations for local symbols. */ |
3835 | struct ppc_dyn_relocs | |
3836 | { | |
3837 | struct ppc_dyn_relocs *next; | |
3838 | ||
3839 | /* The input section of the reloc. */ | |
3840 | asection *sec; | |
3841 | ||
3842 | /* Total number of relocs copied for the input section. */ | |
3843 | unsigned int count : 31; | |
3844 | ||
3845 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3846 | unsigned int ifunc : 1; | |
3847 | }; | |
3848 | ||
65f38f15 AM |
3849 | struct ppc_link_hash_entry |
3850 | { | |
3851 | struct elf_link_hash_entry elf; | |
3852 | ||
b3fac117 AM |
3853 | union { |
3854 | /* A pointer to the most recently used stub hash entry against this | |
3855 | symbol. */ | |
3856 | struct ppc_stub_hash_entry *stub_cache; | |
3857 | ||
3858 | /* A pointer to the next symbol starting with a '.' */ | |
3859 | struct ppc_link_hash_entry *next_dot_sym; | |
3860 | } u; | |
721956f4 | 3861 | |
65f38f15 | 3862 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3863 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3864 | |
721956f4 | 3865 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3866 | struct ppc_link_hash_entry *oh; |
721956f4 | 3867 | |
e86ce104 AM |
3868 | /* Flag function code and descriptor symbols. */ |
3869 | unsigned int is_func:1; | |
3870 | unsigned int is_func_descriptor:1; | |
908b32fc | 3871 | unsigned int fake:1; |
411e1bfb | 3872 | |
c5614fa4 AM |
3873 | /* Whether global opd/toc sym has been adjusted or not. |
3874 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3875 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3876 | unsigned int adjust_done:1; |
3877 | ||
99877b66 AM |
3878 | /* Set if we twiddled this symbol to weak at some stage. */ |
3879 | unsigned int was_undefined:1; | |
3880 | ||
411e1bfb | 3881 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3882 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3883 | corresponding relocs are encountered during check_relocs. | |
3884 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3885 | indicate the corresponding GOT entry type is not needed. | |
3886 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3887 | a TPREL one. We use a separate flag rather than setting TPREL | |
3888 | just for convenience in distinguishing the two cases. */ | |
3889 | #define TLS_GD 1 /* GD reloc. */ | |
3890 | #define TLS_LD 2 /* LD reloc. */ | |
3891 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3892 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3893 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3894 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3895 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3896 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3897 | unsigned char tls_mask; |
65f38f15 AM |
3898 | }; |
3899 | ||
3900 | /* ppc64 ELF linker hash table. */ | |
3901 | ||
3902 | struct ppc_link_hash_table | |
3903 | { | |
3904 | struct elf_link_hash_table elf; | |
3905 | ||
721956f4 AM |
3906 | /* The stub hash table. */ |
3907 | struct bfd_hash_table stub_hash_table; | |
3908 | ||
3909 | /* Another hash table for plt_branch stubs. */ | |
3910 | struct bfd_hash_table branch_hash_table; | |
3911 | ||
3b421ab3 AM |
3912 | /* Hash table for function prologue tocsave. */ |
3913 | htab_t tocsave_htab; | |
3914 | ||
e7d1c40c AM |
3915 | /* Various options and other info passed from the linker. */ |
3916 | struct ppc64_elf_params *params; | |
721956f4 AM |
3917 | |
3918 | /* Array to keep track of which stub sections have been created, and | |
3919 | information on stub grouping. */ | |
3920 | struct map_stub { | |
3921 | /* This is the section to which stubs in the group will be attached. */ | |
3922 | asection *link_sec; | |
3923 | /* The stub section. */ | |
3924 | asection *stub_sec; | |
ad8e1ba5 AM |
3925 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3926 | bfd_vma toc_off; | |
721956f4 AM |
3927 | } *stub_group; |
3928 | ||
ad8e1ba5 AM |
3929 | /* Temp used when calculating TOC pointers. */ |
3930 | bfd_vma toc_curr; | |
bf102f86 AM |
3931 | bfd *toc_bfd; |
3932 | asection *toc_first_sec; | |
ad8e1ba5 | 3933 | |
8f3bab57 AM |
3934 | /* Highest input section id. */ |
3935 | int top_id; | |
3936 | ||
734b6cf9 AM |
3937 | /* Highest output section index. */ |
3938 | int top_index; | |
3939 | ||
b3fac117 AM |
3940 | /* Used when adding symbols. */ |
3941 | struct ppc_link_hash_entry *dot_syms; | |
3942 | ||
734b6cf9 AM |
3943 | /* List of input sections for each output section. */ |
3944 | asection **input_list; | |
721956f4 | 3945 | |
33e44f2e | 3946 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 AM |
3947 | asection *dynbss; |
3948 | asection *relbss; | |
3949 | asection *glink; | |
82bd7b59 | 3950 | asection *sfpr; |
4ce794b7 AM |
3951 | asection *brlt; |
3952 | asection *relbrlt; | |
58d180e8 | 3953 | asection *glink_eh_frame; |
ec338859 | 3954 | |
8387904d AM |
3955 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3956 | struct ppc_link_hash_entry *tls_get_addr; | |
3957 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3958 | |
927be08e AM |
3959 | /* The size of reliplt used by got entry relocs. */ |
3960 | bfd_size_type got_reli_size; | |
3961 | ||
9b5ecbd0 | 3962 | /* Statistics. */ |
7341d5e2 | 3963 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3964 | |
ee75fd95 AM |
3965 | /* Number of stubs against global syms. */ |
3966 | unsigned long stub_globals; | |
3967 | ||
ee67d69a AM |
3968 | /* Set if we're linking code with function descriptors. */ |
3969 | unsigned int opd_abi:1; | |
3970 | ||
4c52953f | 3971 | /* Support for multiple toc sections. */ |
33c0ec9d | 3972 | unsigned int do_multi_toc:1; |
4c52953f | 3973 | unsigned int multi_toc_needed:1; |
927be08e | 3974 | unsigned int second_toc_pass:1; |
67f0cbdb | 3975 | unsigned int do_toc_opt:1; |
4c52953f | 3976 | |
5d1634d7 | 3977 | /* Set on error. */ |
99877b66 | 3978 | unsigned int stub_error:1; |
721956f4 | 3979 | |
f6c7c3e8 | 3980 | /* Temp used by ppc64_elf_before_check_relocs. */ |
99877b66 | 3981 | unsigned int twiddled_syms:1; |
721956f4 AM |
3982 | |
3983 | /* Incremented every time we size stubs. */ | |
3984 | unsigned int stub_iteration; | |
5d1634d7 | 3985 | |
87d72d41 AM |
3986 | /* Small local sym cache. */ |
3987 | struct sym_cache sym_cache; | |
65f38f15 AM |
3988 | }; |
3989 | ||
4c52953f AM |
3990 | /* Rename some of the generic section flags to better document how they |
3991 | are used here. */ | |
b0dddeec AM |
3992 | |
3993 | /* Nonzero if this section has TLS related relocations. */ | |
3994 | #define has_tls_reloc sec_flg0 | |
3995 | ||
3996 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3997 | #define has_tls_get_addr_call sec_flg1 | |
3998 | ||
3999 | /* Nonzero if this section has any toc or got relocs. */ | |
4000 | #define has_toc_reloc sec_flg2 | |
4001 | ||
4002 | /* Nonzero if this section has a call to another section that uses | |
4003 | the toc or got. */ | |
d77c8a4b | 4004 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4005 | |
4006 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4007 | #define call_check_in_progress sec_flg4 |
70cc837d | 4008 | #define call_check_done sec_flg5 |
4c52953f | 4009 | |
65f38f15 AM |
4010 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4011 | ||
4012 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4013 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4014 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4015 | |
721956f4 AM |
4016 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4017 | ((struct ppc_stub_hash_entry *) \ | |
4018 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4019 | ||
4020 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4021 | ((struct ppc_branch_hash_entry *) \ | |
4022 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4023 | ||
4024 | /* Create an entry in the stub hash table. */ | |
4025 | ||
4026 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4027 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4028 | struct bfd_hash_table *table, | |
4029 | const char *string) | |
721956f4 AM |
4030 | { |
4031 | /* Allocate the structure if it has not already been allocated by a | |
4032 | subclass. */ | |
4033 | if (entry == NULL) | |
4034 | { | |
4035 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4036 | if (entry == NULL) | |
4037 | return entry; | |
4038 | } | |
4039 | ||
4040 | /* Call the allocation method of the superclass. */ | |
4041 | entry = bfd_hash_newfunc (entry, table, string); | |
4042 | if (entry != NULL) | |
4043 | { | |
4044 | struct ppc_stub_hash_entry *eh; | |
4045 | ||
4046 | /* Initialize the local fields. */ | |
4047 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4048 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
4049 | eh->stub_sec = NULL; |
4050 | eh->stub_offset = 0; | |
4051 | eh->target_value = 0; | |
4052 | eh->target_section = NULL; | |
721956f4 | 4053 | eh->h = NULL; |
6911b7dc | 4054 | eh->plt_ent = NULL; |
721956f4 | 4055 | eh->id_sec = NULL; |
6911b7dc | 4056 | eh->other = 0; |
721956f4 AM |
4057 | } |
4058 | ||
4059 | return entry; | |
4060 | } | |
4061 | ||
4062 | /* Create an entry in the branch hash table. */ | |
4063 | ||
4064 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4065 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4066 | struct bfd_hash_table *table, | |
4067 | const char *string) | |
721956f4 AM |
4068 | { |
4069 | /* Allocate the structure if it has not already been allocated by a | |
4070 | subclass. */ | |
4071 | if (entry == NULL) | |
4072 | { | |
4073 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4074 | if (entry == NULL) | |
4075 | return entry; | |
4076 | } | |
4077 | ||
4078 | /* Call the allocation method of the superclass. */ | |
4079 | entry = bfd_hash_newfunc (entry, table, string); | |
4080 | if (entry != NULL) | |
4081 | { | |
4082 | struct ppc_branch_hash_entry *eh; | |
4083 | ||
4084 | /* Initialize the local fields. */ | |
4085 | eh = (struct ppc_branch_hash_entry *) entry; | |
4086 | eh->offset = 0; | |
4087 | eh->iter = 0; | |
4088 | } | |
4089 | ||
4090 | return entry; | |
4091 | } | |
4092 | ||
65f38f15 AM |
4093 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4094 | ||
4095 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4096 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4097 | struct bfd_hash_table *table, | |
4098 | const char *string) | |
65f38f15 AM |
4099 | { |
4100 | /* Allocate the structure if it has not already been allocated by a | |
4101 | subclass. */ | |
4102 | if (entry == NULL) | |
4103 | { | |
4104 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4105 | if (entry == NULL) | |
4106 | return entry; | |
4107 | } | |
4108 | ||
4109 | /* Call the allocation method of the superclass. */ | |
4110 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4111 | if (entry != NULL) | |
4112 | { | |
4113 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4114 | ||
b3fac117 | 4115 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4116 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4117 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4118 | ||
4119 | /* When making function calls, old ABI code references function entry | |
4120 | points (dot symbols), while new ABI code references the function | |
4121 | descriptor symbol. We need to make any combination of reference and | |
4122 | definition work together, without breaking archive linking. | |
4123 | ||
4124 | For a defined function "foo" and an undefined call to "bar": | |
4125 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4126 | "bar" too). | |
4127 | A new object defines "foo" and references "bar". | |
4128 | ||
4129 | A new object thus has no problem with its undefined symbols being | |
4130 | satisfied by definitions in an old object. On the other hand, the | |
4131 | old object won't have ".bar" satisfied by a new object. | |
4132 | ||
4133 | Keep a list of newly added dot-symbols. */ | |
4134 | ||
4135 | if (string[0] == '.') | |
4136 | { | |
4137 | struct ppc_link_hash_table *htab; | |
4138 | ||
4139 | htab = (struct ppc_link_hash_table *) table; | |
4140 | eh->u.next_dot_sym = htab->dot_syms; | |
4141 | htab->dot_syms = eh; | |
4142 | } | |
65f38f15 AM |
4143 | } |
4144 | ||
4145 | return entry; | |
4146 | } | |
4147 | ||
3b421ab3 AM |
4148 | struct tocsave_entry { |
4149 | asection *sec; | |
4150 | bfd_vma offset; | |
4151 | }; | |
4152 | ||
4153 | static hashval_t | |
4154 | tocsave_htab_hash (const void *p) | |
4155 | { | |
4156 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4157 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
4158 | } | |
4159 | ||
4160 | static int | |
4161 | tocsave_htab_eq (const void *p1, const void *p2) | |
4162 | { | |
4163 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4164 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4165 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4166 | } | |
4167 | ||
68faa637 AM |
4168 | /* Destroy a ppc64 ELF linker hash table. */ |
4169 | ||
4170 | static void | |
d495ab0d | 4171 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4172 | { |
d495ab0d | 4173 | struct ppc_link_hash_table *htab; |
68faa637 | 4174 | |
d495ab0d | 4175 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4176 | if (htab->tocsave_htab) |
4177 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4178 | bfd_hash_table_free (&htab->branch_hash_table); |
4179 | bfd_hash_table_free (&htab->stub_hash_table); | |
4180 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4181 | } |
4182 | ||
65f38f15 AM |
4183 | /* Create a ppc64 ELF linker hash table. */ |
4184 | ||
4185 | static struct bfd_link_hash_table * | |
4ce794b7 | 4186 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4187 | { |
4188 | struct ppc_link_hash_table *htab; | |
4189 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4190 | ||
4ce794b7 | 4191 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4192 | if (htab == NULL) |
4193 | return NULL; | |
4194 | ||
66eb6687 | 4195 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4196 | sizeof (struct ppc_link_hash_entry), |
4197 | PPC64_ELF_DATA)) | |
65f38f15 | 4198 | { |
e2d34d7d | 4199 | free (htab); |
65f38f15 AM |
4200 | return NULL; |
4201 | } | |
4202 | ||
721956f4 | 4203 | /* Init the stub hash table too. */ |
66eb6687 AM |
4204 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4205 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4206 | { |
d495ab0d | 4207 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4208 | return NULL; |
4209 | } | |
721956f4 AM |
4210 | |
4211 | /* And the branch hash table. */ | |
66eb6687 AM |
4212 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4213 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4214 | { |
4215 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4216 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4217 | return NULL; |
4218 | } | |
721956f4 | 4219 | |
3b421ab3 AM |
4220 | htab->tocsave_htab = htab_try_create (1024, |
4221 | tocsave_htab_hash, | |
4222 | tocsave_htab_eq, | |
4223 | NULL); | |
4224 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4225 | { |
d495ab0d | 4226 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4227 | return NULL; |
4228 | } | |
d495ab0d | 4229 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4230 | |
3254fd24 AM |
4231 | /* Initializing two fields of the union is just cosmetic. We really |
4232 | only care about glist, but when compiled on a 32-bit host the | |
4233 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4234 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4235 | htab->elf.init_got_refcount.refcount = 0; |
4236 | htab->elf.init_got_refcount.glist = NULL; | |
4237 | htab->elf.init_plt_refcount.refcount = 0; | |
4238 | htab->elf.init_plt_refcount.glist = NULL; | |
4239 | htab->elf.init_got_offset.offset = 0; | |
4240 | htab->elf.init_got_offset.glist = NULL; | |
4241 | htab->elf.init_plt_offset.offset = 0; | |
4242 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4243 | |
65f38f15 AM |
4244 | return &htab->elf.root; |
4245 | } | |
4246 | ||
bfeb4a28 AM |
4247 | /* Create sections for linker generated code. */ |
4248 | ||
4249 | static bfd_boolean | |
4250 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4251 | { | |
4252 | struct ppc_link_hash_table *htab; | |
4253 | flagword flags; | |
4254 | ||
4255 | htab = ppc_hash_table (info); | |
4256 | ||
4257 | /* Create .sfpr for code to save and restore fp regs. */ | |
4258 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4259 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4260 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4261 | flags); | |
4262 | if (htab->sfpr == NULL | |
4263 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4264 | return FALSE; | |
4265 | ||
4266 | /* Create .glink for lazy dynamic linking support. */ | |
4267 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4268 | flags); | |
4269 | if (htab->glink == NULL | |
4270 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4271 | return FALSE; | |
4272 | ||
4273 | if (!info->no_ld_generated_unwind_info) | |
4274 | { | |
4275 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4276 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4277 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4278 | ".eh_frame", | |
4279 | flags); | |
4280 | if (htab->glink_eh_frame == NULL | |
4281 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4282 | return FALSE; | |
4283 | } | |
4284 | ||
4285 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4286 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4287 | if (htab->elf.iplt == NULL | |
4288 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4289 | return FALSE; |
4290 | ||
4291 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4292 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4293 | htab->elf.irelplt |
4294 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4295 | if (htab->elf.irelplt == NULL | |
4296 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4297 | return FALSE; |
4298 | ||
4299 | /* Create branch lookup table for plt_branch stubs. */ | |
4300 | flags = (SEC_ALLOC | SEC_LOAD | |
4301 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4302 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4303 | flags); | |
4304 | if (htab->brlt == NULL | |
4305 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4306 | return FALSE; | |
4307 | ||
4308 | if (!info->shared) | |
4309 | return TRUE; | |
4310 | ||
4311 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4312 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4313 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4314 | ".rela.branch_lt", | |
4315 | flags); | |
4316 | if (htab->relbrlt == NULL | |
4317 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4318 | return FALSE; | |
4319 | ||
4320 | return TRUE; | |
4321 | } | |
4322 | ||
e717da7e AM |
4323 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4324 | ||
bfeb4a28 | 4325 | bfd_boolean |
e7d1c40c AM |
4326 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4327 | struct ppc64_elf_params *params) | |
e717da7e AM |
4328 | { |
4329 | struct ppc_link_hash_table *htab; | |
4330 | ||
e7d1c40c | 4331 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4332 | |
4333 | /* Always hook our dynamic sections into the first bfd, which is the | |
4334 | linker created stub bfd. This ensures that the GOT header is at | |
4335 | the start of the output TOC section. */ | |
4336 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 4337 | if (htab == NULL) |
bfeb4a28 | 4338 | return FALSE; |
e7d1c40c AM |
4339 | htab->elf.dynobj = params->stub_bfd; |
4340 | htab->params = params; | |
bfeb4a28 AM |
4341 | |
4342 | if (info->relocatable) | |
4343 | return TRUE; | |
4344 | ||
4345 | return create_linkage_sections (htab->elf.dynobj, info); | |
e717da7e AM |
4346 | } |
4347 | ||
721956f4 AM |
4348 | /* Build a name for an entry in the stub hash table. */ |
4349 | ||
4350 | static char * | |
4ce794b7 AM |
4351 | ppc_stub_name (const asection *input_section, |
4352 | const asection *sym_sec, | |
4353 | const struct ppc_link_hash_entry *h, | |
4354 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4355 | { |
4356 | char *stub_name; | |
bcaa2f82 | 4357 | ssize_t len; |
721956f4 AM |
4358 | |
4359 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4360 | offsets from a sym as a branch target? In fact, we could | |
4361 | probably assume the addend is always zero. */ | |
4362 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4363 | ||
4364 | if (h) | |
4365 | { | |
4366 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4367 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4368 | if (stub_name == NULL) |
4369 | return stub_name; | |
4370 | ||
bcaa2f82 AM |
4371 | len = sprintf (stub_name, "%08x.%s+%x", |
4372 | input_section->id & 0xffffffff, | |
4373 | h->elf.root.root.string, | |
4374 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4375 | } |
4376 | else | |
4377 | { | |
ad8e1ba5 | 4378 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4379 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4380 | if (stub_name == NULL) |
4381 | return stub_name; | |
4382 | ||
bcaa2f82 AM |
4383 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4384 | input_section->id & 0xffffffff, | |
4385 | sym_sec->id & 0xffffffff, | |
4386 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4387 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4388 | } |
bcaa2f82 | 4389 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4390 | stub_name[len - 2] = 0; |
721956f4 AM |
4391 | return stub_name; |
4392 | } | |
4393 | ||
4394 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4395 | creating the stub name takes a bit of time. */ | |
4396 | ||
4397 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4398 | ppc_get_stub_entry (const asection *input_section, |
4399 | const asection *sym_sec, | |
039b3fef | 4400 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4401 | const Elf_Internal_Rela *rel, |
4402 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4403 | { |
4404 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4405 | const asection *id_sec; |
4406 | ||
4407 | /* If this input section is part of a group of sections sharing one | |
4408 | stub section, then use the id of the first section in the group. | |
4409 | Stub names need to include a section id, as there may well be | |
4410 | more than one stub used to reach say, printf, and we need to | |
4411 | distinguish between them. */ | |
4412 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4413 | ||
b3fac117 AM |
4414 | if (h != NULL && h->u.stub_cache != NULL |
4415 | && h->u.stub_cache->h == h | |
4416 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4417 | { |
b3fac117 | 4418 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4419 | } |
4420 | else | |
4421 | { | |
4422 | char *stub_name; | |
4423 | ||
4424 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4425 | if (stub_name == NULL) | |
4426 | return NULL; | |
4427 | ||
4428 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4429 | stub_name, FALSE, FALSE); |
721956f4 | 4430 | if (h != NULL) |
b3fac117 | 4431 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4432 | |
4433 | free (stub_name); | |
4434 | } | |
4435 | ||
4436 | return stub_entry; | |
4437 | } | |
4438 | ||
4439 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4440 | stub entry are initialised. */ | |
4441 | ||
4442 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4443 | ppc_add_stub (const char *stub_name, |
4444 | asection *section, | |
25f53a85 | 4445 | struct bfd_link_info *info) |
721956f4 | 4446 | { |
25f53a85 | 4447 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
721956f4 AM |
4448 | asection *link_sec; |
4449 | asection *stub_sec; | |
4450 | struct ppc_stub_hash_entry *stub_entry; | |
4451 | ||
4452 | link_sec = htab->stub_group[section->id].link_sec; | |
4453 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4454 | if (stub_sec == NULL) | |
4455 | { | |
4456 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4457 | if (stub_sec == NULL) | |
4458 | { | |
d4c88bbb | 4459 | size_t namelen; |
721956f4 AM |
4460 | bfd_size_type len; |
4461 | char *s_name; | |
4462 | ||
d4c88bbb AM |
4463 | namelen = strlen (link_sec->name); |
4464 | len = namelen + sizeof (STUB_SUFFIX); | |
e7d1c40c | 4465 | s_name = bfd_alloc (htab->params->stub_bfd, len); |
721956f4 AM |
4466 | if (s_name == NULL) |
4467 | return NULL; | |
4468 | ||
d4c88bbb AM |
4469 | memcpy (s_name, link_sec->name, namelen); |
4470 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
e7d1c40c | 4471 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); |
721956f4 AM |
4472 | if (stub_sec == NULL) |
4473 | return NULL; | |
4474 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4475 | } | |
4476 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4477 | } | |
4478 | ||
4479 | /* Enter this entry into the linker stub hash table. */ | |
4480 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4481 | TRUE, FALSE); |
721956f4 AM |
4482 | if (stub_entry == NULL) |
4483 | { | |
8de848d8 | 4484 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4485 | section->owner, stub_name); |
721956f4 AM |
4486 | return NULL; |
4487 | } | |
4488 | ||
4489 | stub_entry->stub_sec = stub_sec; | |
4490 | stub_entry->stub_offset = 0; | |
4491 | stub_entry->id_sec = link_sec; | |
4492 | return stub_entry; | |
4493 | } | |
4494 | ||
e717da7e AM |
4495 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4496 | not already done. */ | |
65f38f15 | 4497 | |
b34976b6 | 4498 | static bfd_boolean |
e717da7e | 4499 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4500 | { |
e717da7e AM |
4501 | asection *got, *relgot; |
4502 | flagword flags; | |
4503 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4504 | |
0c8d6e5c | 4505 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4506 | return FALSE; |
4dfe6ac6 NC |
4507 | if (htab == NULL) |
4508 | return FALSE; | |
0ffa91dd | 4509 | |
33e44f2e AM |
4510 | if (!htab->elf.sgot |
4511 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4512 | return FALSE; | |
e717da7e AM |
4513 | |
4514 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4515 | | SEC_LINKER_CREATED); | |
4516 | ||
c456f082 | 4517 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4518 | if (!got |
e717da7e AM |
4519 | || !bfd_set_section_alignment (abfd, got, 3)) |
4520 | return FALSE; | |
65f38f15 | 4521 | |
c456f082 AM |
4522 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4523 | flags | SEC_READONLY); | |
e717da7e | 4524 | if (!relgot |
e717da7e | 4525 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4526 | return FALSE; |
e717da7e AM |
4527 | |
4528 | ppc64_elf_tdata (abfd)->got = got; | |
4529 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4530 | return TRUE; |
65f38f15 | 4531 | } |
5bd4f169 | 4532 | |
82bd7b59 | 4533 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4534 | |
b34976b6 | 4535 | static bfd_boolean |
4ce794b7 | 4536 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4537 | { |
65f38f15 | 4538 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4539 | |
65f38f15 | 4540 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4541 | return FALSE; |
65f38f15 | 4542 | |
e717da7e | 4543 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4544 | if (htab == NULL) |
4545 | return FALSE; | |
4546 | ||
3d4d4302 | 4547 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
65f38f15 | 4548 | if (!info->shared) |
3d4d4302 | 4549 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
65f38f15 | 4550 | |
33e44f2e | 4551 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
4ce794b7 | 4552 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4553 | abort (); |
4554 | ||
b34976b6 | 4555 | return TRUE; |
5bd4f169 AM |
4556 | } |
4557 | ||
b31867b6 AM |
4558 | /* Follow indirect and warning symbol links. */ |
4559 | ||
4560 | static inline struct bfd_link_hash_entry * | |
4561 | follow_link (struct bfd_link_hash_entry *h) | |
4562 | { | |
4563 | while (h->type == bfd_link_hash_indirect | |
4564 | || h->type == bfd_link_hash_warning) | |
4565 | h = h->u.i.link; | |
4566 | return h; | |
4567 | } | |
4568 | ||
4569 | static inline struct elf_link_hash_entry * | |
4570 | elf_follow_link (struct elf_link_hash_entry *h) | |
4571 | { | |
4572 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4573 | } | |
4574 | ||
4575 | static inline struct ppc_link_hash_entry * | |
4576 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4577 | { | |
4578 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4579 | } | |
4580 | ||
40d16e0b AM |
4581 | /* Merge PLT info on FROM with that on TO. */ |
4582 | ||
4583 | static void | |
4584 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4585 | struct ppc_link_hash_entry *to) | |
4586 | { | |
4587 | if (from->elf.plt.plist != NULL) | |
4588 | { | |
4589 | if (to->elf.plt.plist != NULL) | |
4590 | { | |
4591 | struct plt_entry **entp; | |
4592 | struct plt_entry *ent; | |
4593 | ||
4594 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4595 | { | |
4596 | struct plt_entry *dent; | |
4597 | ||
4598 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4599 | if (dent->addend == ent->addend) | |
4600 | { | |
4601 | dent->plt.refcount += ent->plt.refcount; | |
4602 | *entp = ent->next; | |
4603 | break; | |
4604 | } | |
4605 | if (dent == NULL) | |
4606 | entp = &ent->next; | |
4607 | } | |
4608 | *entp = to->elf.plt.plist; | |
4609 | } | |
4610 | ||
4611 | to->elf.plt.plist = from->elf.plt.plist; | |
4612 | from->elf.plt.plist = NULL; | |
4613 | } | |
4614 | } | |
4615 | ||
65f38f15 AM |
4616 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4617 | ||
4618 | static void | |
fcfa13d2 AM |
4619 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4620 | struct elf_link_hash_entry *dir, | |
4621 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4622 | { |
4623 | struct ppc_link_hash_entry *edir, *eind; | |
4624 | ||
4625 | edir = (struct ppc_link_hash_entry *) dir; | |
4626 | eind = (struct ppc_link_hash_entry *) ind; | |
4627 | ||
c79d6685 AM |
4628 | edir->is_func |= eind->is_func; |
4629 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4630 | edir->tls_mask |= eind->tls_mask; | |
4631 | if (eind->oh != NULL) | |
4632 | edir->oh = ppc_follow_link (eind->oh); | |
4633 | ||
4634 | /* If called to transfer flags for a weakdef during processing | |
4635 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4636 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4637 | if (!(ELIMINATE_COPY_RELOCS | |
4638 | && eind->elf.root.type != bfd_link_hash_indirect | |
4639 | && edir->elf.dynamic_adjusted)) | |
4640 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4641 | ||
4642 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4643 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4644 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4645 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
a345bc8d | 4646 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
c79d6685 | 4647 | |
411e1bfb | 4648 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4649 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4650 | { |
bbd7ec4a AM |
4651 | if (edir->dyn_relocs != NULL) |
4652 | { | |
6061a67d AM |
4653 | struct elf_dyn_relocs **pp; |
4654 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4655 | |
fcfa13d2 | 4656 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4657 | list. Merge any entries against the same section. */ |
4658 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4659 | { | |
6061a67d | 4660 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4661 | |
4662 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4663 | if (q->sec == p->sec) | |
4664 | { | |
4665 | q->pc_count += p->pc_count; | |
4666 | q->count += p->count; | |
4667 | *pp = p->next; | |
4668 | break; | |
4669 | } | |
4670 | if (q == NULL) | |
4671 | pp = &p->next; | |
4672 | } | |
4673 | *pp = edir->dyn_relocs; | |
4674 | } | |
4675 | ||
65f38f15 AM |
4676 | edir->dyn_relocs = eind->dyn_relocs; |
4677 | eind->dyn_relocs = NULL; | |
4678 | } | |
65f38f15 | 4679 | |
68ba6d40 AM |
4680 | /* If we were called to copy over info for a weak sym, that's all. |
4681 | You might think dyn_relocs need not be copied over; After all, | |
4682 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 4683 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
4684 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
4685 | dyn_relocs in read-only sections, and it does so on what is the | |
4686 | DIR sym here. */ | |
4687 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4688 | return; | |
4689 | ||
81848ca0 AM |
4690 | /* Copy over got entries that we may have already seen to the |
4691 | symbol which just became indirect. */ | |
411e1bfb AM |
4692 | if (eind->elf.got.glist != NULL) |
4693 | { | |
4694 | if (edir->elf.got.glist != NULL) | |
4695 | { | |
4696 | struct got_entry **entp; | |
4697 | struct got_entry *ent; | |
4698 | ||
4699 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4700 | { | |
4701 | struct got_entry *dent; | |
4702 | ||
4703 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4704 | if (dent->addend == ent->addend | |
e717da7e | 4705 | && dent->owner == ent->owner |
411e1bfb AM |
4706 | && dent->tls_type == ent->tls_type) |
4707 | { | |
4708 | dent->got.refcount += ent->got.refcount; | |
4709 | *entp = ent->next; | |
4710 | break; | |
4711 | } | |
4712 | if (dent == NULL) | |
4713 | entp = &ent->next; | |
4714 | } | |
4715 | *entp = edir->elf.got.glist; | |
4716 | } | |
4717 | ||
4718 | edir->elf.got.glist = eind->elf.got.glist; | |
4719 | eind->elf.got.glist = NULL; | |
4720 | } | |
4721 | ||
4722 | /* And plt entries. */ | |
40d16e0b | 4723 | move_plt_plist (eind, edir); |
411e1bfb | 4724 | |
fcfa13d2 | 4725 | if (eind->elf.dynindx != -1) |
411e1bfb | 4726 | { |
fcfa13d2 AM |
4727 | if (edir->elf.dynindx != -1) |
4728 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4729 | edir->elf.dynstr_index); | |
411e1bfb AM |
4730 | edir->elf.dynindx = eind->elf.dynindx; |
4731 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4732 | eind->elf.dynindx = -1; | |
4733 | eind->elf.dynstr_index = 0; | |
4734 | } | |
411e1bfb AM |
4735 | } |
4736 | ||
8387904d AM |
4737 | /* Find the function descriptor hash entry from the given function code |
4738 | hash entry FH. Link the entries via their OH fields. */ | |
4739 | ||
4740 | static struct ppc_link_hash_entry * | |
b31867b6 | 4741 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4742 | { |
4743 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4744 | ||
4745 | if (fdh == NULL) | |
4746 | { | |
4747 | const char *fd_name = fh->elf.root.root.string + 1; | |
4748 | ||
4749 | fdh = (struct ppc_link_hash_entry *) | |
4750 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4751 | if (fdh == NULL) |
4752 | return fdh; | |
4753 | ||
4754 | fdh->is_func_descriptor = 1; | |
4755 | fdh->oh = fh; | |
4756 | fh->is_func = 1; | |
4757 | fh->oh = fdh; | |
8387904d AM |
4758 | } |
4759 | ||
b31867b6 | 4760 | return ppc_follow_link (fdh); |
8387904d AM |
4761 | } |
4762 | ||
bb700d78 AM |
4763 | /* Make a fake function descriptor sym for the code sym FH. */ |
4764 | ||
4765 | static struct ppc_link_hash_entry * | |
4766 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4767 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4768 | { |
4769 | bfd *abfd; | |
4770 | asymbol *newsym; | |
4771 | struct bfd_link_hash_entry *bh; | |
4772 | struct ppc_link_hash_entry *fdh; | |
4773 | ||
4774 | abfd = fh->elf.root.u.undef.abfd; | |
4775 | newsym = bfd_make_empty_symbol (abfd); | |
4776 | newsym->name = fh->elf.root.root.string + 1; | |
4777 | newsym->section = bfd_und_section_ptr; | |
4778 | newsym->value = 0; | |
908b32fc | 4779 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4780 | |
4781 | bh = NULL; | |
4782 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4783 | newsym->flags, newsym->section, | |
4784 | newsym->value, NULL, FALSE, FALSE, | |
4785 | &bh)) | |
4786 | return NULL; | |
4787 | ||
4788 | fdh = (struct ppc_link_hash_entry *) bh; | |
4789 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4790 | fdh->fake = 1; |
4791 | fdh->is_func_descriptor = 1; | |
4792 | fdh->oh = fh; | |
4793 | fh->is_func = 1; | |
4794 | fh->oh = fdh; | |
bb700d78 AM |
4795 | return fdh; |
4796 | } | |
4797 | ||
8387904d AM |
4798 | /* Fix function descriptor symbols defined in .opd sections to be |
4799 | function type. */ | |
555cd476 AM |
4800 | |
4801 | static bfd_boolean | |
c16153ae | 4802 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4803 | struct bfd_link_info *info, |
555cd476 | 4804 | Elf_Internal_Sym *isym, |
6911b7dc | 4805 | const char **name, |
555cd476 AM |
4806 | flagword *flags ATTRIBUTE_UNUSED, |
4807 | asection **sec, | |
b53dfeb2 | 4808 | bfd_vma *value) |
555cd476 | 4809 | { |
f1885d1e AM |
4810 | if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
4811 | || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4812 | && (ibfd->flags & DYNAMIC) == 0 | |
4813 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
f64b2e8d NC |
4814 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
4815 | ||
b53dfeb2 | 4816 | if (*sec != NULL |
f1885d1e | 4817 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4818 | { |
4819 | asection *code_sec; | |
4820 | ||
4821 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4822 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4823 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4824 | ||
4825 | /* If the symbol is a function defined in .opd, and the function | |
4826 | code is in a discarded group, let it appear to be undefined. */ | |
4827 | if (!info->relocatable | |
4828 | && (*sec)->reloc_count != 0 | |
4829 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4830 | FALSE) != (bfd_vma) -1 | |
4831 | && discarded_section (code_sec)) | |
4832 | { | |
4833 | *sec = bfd_und_section_ptr; | |
4834 | isym->st_shndx = SHN_UNDEF; | |
4835 | } | |
4836 | } | |
433817dd | 4837 | |
6911b7dc AM |
4838 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4839 | { | |
4840 | if (abiversion (ibfd) == 0) | |
4841 | set_abiversion (ibfd, 2); | |
4842 | else if (abiversion (ibfd) == 1) | |
4843 | { | |
4844 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
4845 | " for ABI version 1\n"), name); | |
4846 | bfd_set_error (bfd_error_bad_value); | |
4847 | return FALSE; | |
4848 | } | |
4849 | } | |
4850 | ||
555cd476 AM |
4851 | return TRUE; |
4852 | } | |
4853 | ||
6911b7dc AM |
4854 | /* Merge non-visibility st_other attributes: local entry point. */ |
4855 | ||
4856 | static void | |
4857 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4858 | const Elf_Internal_Sym *isym, | |
4859 | bfd_boolean definition, | |
4860 | bfd_boolean dynamic) | |
4861 | { | |
4862 | if (definition && !dynamic) | |
4863 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
4864 | | ELF_ST_VISIBILITY (h->other)); | |
4865 | } | |
4866 | ||
8387904d | 4867 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4868 | inclusion of a new ABI object archive that defines "bar". |
4869 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4870 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4871 | |
4872 | static struct elf_link_hash_entry * | |
4873 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4874 | struct bfd_link_info *info, | |
4875 | const char *name) | |
4876 | { | |
4877 | struct elf_link_hash_entry *h; | |
4878 | char *dot_name; | |
4879 | size_t len; | |
4880 | ||
4881 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4882 | if (h != NULL |
4883 | /* Don't return this sym if it is a fake function descriptor | |
4884 | created by add_symbol_adjust. */ | |
4885 | && !(h->root.type == bfd_link_hash_undefweak | |
4886 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4887 | return h; |
4888 | ||
4889 | if (name[0] == '.') | |
4890 | return h; | |
4891 | ||
4892 | len = strlen (name); | |
4893 | dot_name = bfd_alloc (abfd, len + 2); | |
4894 | if (dot_name == NULL) | |
4895 | return (struct elf_link_hash_entry *) 0 - 1; | |
4896 | dot_name[0] = '.'; | |
4897 | memcpy (dot_name + 1, name, len + 1); | |
4898 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4899 | bfd_release (abfd, dot_name); | |
4900 | return h; | |
4901 | } | |
4902 | ||
4903 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4904 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4905 | are made weak. This stops later archive searches from including an | |
4906 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4907 | prevents the linker complaining about undefined symbols. |
4908 | We also check and correct mismatched symbol visibility here. The | |
4909 | most restrictive visibility of the function descriptor and the | |
4910 | function entry symbol is used. */ | |
8387904d AM |
4911 | |
4912 | static bfd_boolean | |
b3fac117 | 4913 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4914 | { |
8387904d AM |
4915 | struct ppc_link_hash_table *htab; |
4916 | struct ppc_link_hash_entry *fdh; | |
4917 | ||
b3fac117 | 4918 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4919 | return TRUE; |
4920 | ||
b3fac117 AM |
4921 | if (eh->elf.root.type == bfd_link_hash_warning) |
4922 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4923 | |
b3fac117 AM |
4924 | if (eh->elf.root.root.string[0] != '.') |
4925 | abort (); | |
8387904d | 4926 | |
b3fac117 | 4927 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4928 | if (htab == NULL) |
4929 | return FALSE; | |
4930 | ||
b31867b6 AM |
4931 | fdh = lookup_fdh (eh, htab); |
4932 | if (fdh == NULL) | |
4933 | { | |
4934 | if (!info->relocatable | |
4935 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4936 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4937 | && eh->elf.ref_regular) | |
4938 | { | |
4939 | /* Make an undefweak function descriptor sym, which is enough to | |
4940 | pull in an --as-needed shared lib, but won't cause link | |
4941 | errors. Archives are handled elsewhere. */ | |
4942 | fdh = make_fdh (info, eh); | |
4943 | if (fdh == NULL) | |
4944 | return FALSE; | |
4945 | fdh->elf.ref_regular = 1; | |
4946 | } | |
bb700d78 | 4947 | } |
b31867b6 | 4948 | else |
8387904d | 4949 | { |
35b0ce59 AM |
4950 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4951 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4952 | if (entry_vis < descr_vis) | |
4953 | fdh->elf.other += entry_vis - descr_vis; | |
4954 | else if (entry_vis > descr_vis) | |
4955 | eh->elf.other += descr_vis - entry_vis; | |
4956 | ||
e87d886e AM |
4957 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4958 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4959 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4960 | { |
4961 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4962 | eh->was_undefined = 1; | |
4963 | htab->twiddled_syms = 1; | |
4964 | } | |
8387904d | 4965 | } |
99877b66 | 4966 | |
8387904d AM |
4967 | return TRUE; |
4968 | } | |
4969 | ||
f6c7c3e8 AM |
4970 | /* Set up opd section info and abiversion for IBFD, and process list |
4971 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4972 | |
8387904d | 4973 | static bfd_boolean |
f6c7c3e8 | 4974 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4975 | { |
99877b66 | 4976 | struct ppc_link_hash_table *htab; |
b3fac117 | 4977 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4978 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4979 | |
459609d6 | 4980 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4981 | { |
459609d6 AM |
4982 | if (abiversion (ibfd) == 0) |
4983 | set_abiversion (ibfd, 1); | |
4984 | else if (abiversion (ibfd) == 2) | |
f6c7c3e8 | 4985 | { |
459609d6 AM |
4986 | info->callbacks->einfo (_("%P: %B .opd not allowed in ABI" |
4987 | " version %d\n"), | |
4988 | ibfd, abiversion (ibfd)); | |
4989 | bfd_set_error (bfd_error_bad_value); | |
4990 | return FALSE; | |
f6c7c3e8 AM |
4991 | } |
4992 | ||
459609d6 AM |
4993 | if ((ibfd->flags & DYNAMIC) == 0 |
4994 | && (opd->flags & SEC_RELOC) != 0 | |
4995 | && opd->reloc_count != 0 | |
4996 | && !bfd_is_abs_section (opd->output_section)) | |
b3fac117 | 4997 | { |
459609d6 AM |
4998 | /* Garbage collection needs some extra help with .opd sections. |
4999 | We don't want to necessarily keep everything referenced by | |
5000 | relocs in .opd, as that would keep all functions. Instead, | |
5001 | if we reference an .opd symbol (a function descriptor), we | |
5002 | want to keep the function code symbol's section. This is | |
5003 | easy for global symbols, but for local syms we need to keep | |
5004 | information about the associated function section. */ | |
5005 | bfd_size_type amt; | |
5006 | asection **opd_sym_map; | |
5007 | ||
5008 | amt = opd->size * sizeof (*opd_sym_map) / 8; | |
5009 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
5010 | if (opd_sym_map == NULL) | |
b3fac117 | 5011 | return FALSE; |
459609d6 AM |
5012 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
5013 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); | |
5014 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
b3fac117 AM |
5015 | } |
5016 | } | |
5017 | ||
459609d6 AM |
5018 | if (!is_ppc64_elf (info->output_bfd)) |
5019 | return TRUE; | |
5020 | htab = ppc_hash_table (info); | |
5021 | if (htab == NULL) | |
5022 | return FALSE; | |
5023 | ||
5024 | /* For input files without an explicit abiversion in e_flags | |
5025 | we should have flagged any with symbol st_other bits set | |
5026 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5027 | Set the output abiversion if not yet set, and for any input | |
5028 | still ambiguous, take its abiversion from the output. | |
5029 | Differences in ABI are reported later. */ | |
5030 | if (abiversion (info->output_bfd) == 0) | |
5031 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5032 | else if (abiversion (ibfd) == 0) | |
5033 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
5034 | ||
5035 | p = &htab->dot_syms; | |
5036 | while ((eh = *p) != NULL) | |
5037 | { | |
5038 | *p = NULL; | |
5039 | if (&eh->elf == htab->elf.hgot) | |
5040 | ; | |
5041 | else if (htab->elf.hgot == NULL | |
5042 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5043 | htab->elf.hgot = &eh->elf; | |
5044 | else if (!add_symbol_adjust (eh, info)) | |
5045 | return FALSE; | |
5046 | p = &eh->u.next_dot_sym; | |
5047 | } | |
5048 | ||
b3fac117 AM |
5049 | /* Clear the list for non-ppc64 input files. */ |
5050 | p = &htab->dot_syms; | |
5051 | while ((eh = *p) != NULL) | |
5052 | { | |
5053 | *p = NULL; | |
5054 | p = &eh->u.next_dot_sym; | |
5055 | } | |
99877b66 AM |
5056 | |
5057 | /* We need to fix the undefs list for any syms we have twiddled to | |
5058 | undef_weak. */ | |
5059 | if (htab->twiddled_syms) | |
5060 | { | |
77cfaee6 | 5061 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
5062 | htab->twiddled_syms = 0; |
5063 | } | |
b3fac117 | 5064 | return TRUE; |
8387904d AM |
5065 | } |
5066 | ||
97fed1c9 JJ |
5067 | /* Undo hash table changes when an --as-needed input file is determined |
5068 | not to be needed. */ | |
5069 | ||
5070 | static bfd_boolean | |
e5034e59 AM |
5071 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5072 | struct bfd_link_info *info, | |
5073 | enum notice_asneeded_action act) | |
97fed1c9 | 5074 | { |
e5034e59 AM |
5075 | if (act == notice_not_needed) |
5076 | { | |
5077 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5078 | |
e5034e59 AM |
5079 | if (htab == NULL) |
5080 | return FALSE; | |
4dfe6ac6 | 5081 | |
e5034e59 AM |
5082 | htab->dot_syms = NULL; |
5083 | } | |
5084 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5085 | } |
5086 | ||
aa374f67 AM |
5087 | /* If --just-symbols against a final linked binary, then assume we need |
5088 | toc adjusting stubs when calling functions defined there. */ | |
5089 | ||
5090 | static void | |
5091 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5092 | { | |
5093 | if ((sec->flags & SEC_CODE) != 0 | |
5094 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5095 | && is_ppc64_elf (sec->owner)) | |
5096 | { | |
2c3f079f AM |
5097 | if (abiversion (sec->owner) >= 2 |
5098 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5099 | sec->has_toc_reloc = 1; |
5100 | } | |
5101 | _bfd_elf_link_just_syms (sec, info); | |
5102 | } | |
5103 | ||
e054468f | 5104 | static struct plt_entry ** |
4ce794b7 AM |
5105 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5106 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5107 | { |
5108 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5109 | struct plt_entry **local_plt; |
f961d9dd | 5110 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5111 | |
5112 | if (local_got_ents == NULL) | |
5113 | { | |
5114 | bfd_size_type size = symtab_hdr->sh_info; | |
5115 | ||
e054468f AM |
5116 | size *= (sizeof (*local_got_ents) |
5117 | + sizeof (*local_plt) | |
5118 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5119 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5120 | if (local_got_ents == NULL) |
e054468f | 5121 | return NULL; |
411e1bfb AM |
5122 | elf_local_got_ents (abfd) = local_got_ents; |
5123 | } | |
5124 | ||
e054468f | 5125 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5126 | { |
5127 | struct got_entry *ent; | |
5128 | ||
5129 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5130 | if (ent->addend == r_addend |
5131 | && ent->owner == abfd | |
5132 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5133 | break; |
5134 | if (ent == NULL) | |
5135 | { | |
5136 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5137 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5138 | if (ent == NULL) |
5139 | return FALSE; | |
5140 | ent->next = local_got_ents[r_symndx]; | |
5141 | ent->addend = r_addend; | |
e717da7e | 5142 | ent->owner = abfd; |
411e1bfb | 5143 | ent->tls_type = tls_type; |
927be08e | 5144 | ent->is_indirect = FALSE; |
411e1bfb AM |
5145 | ent->got.refcount = 0; |
5146 | local_got_ents[r_symndx] = ent; | |
5147 | } | |
5148 | ent->got.refcount += 1; | |
5149 | } | |
5150 | ||
e054468f | 5151 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5152 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 5153 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
5154 | |
5155 | return local_plt + r_symndx; | |
65f38f15 AM |
5156 | } |
5157 | ||
411e1bfb | 5158 | static bfd_boolean |
e054468f | 5159 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5160 | { |
411e1bfb | 5161 | struct plt_entry *ent; |
1e2f5b6e | 5162 | |
e054468f | 5163 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5164 | if (ent->addend == addend) |
5165 | break; | |
5166 | if (ent == NULL) | |
1e2f5b6e | 5167 | { |
411e1bfb | 5168 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5169 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5170 | if (ent == NULL) |
5171 | return FALSE; | |
e054468f | 5172 | ent->next = *plist; |
411e1bfb AM |
5173 | ent->addend = addend; |
5174 | ent->plt.refcount = 0; | |
e054468f | 5175 | *plist = ent; |
1e2f5b6e | 5176 | } |
411e1bfb | 5177 | ent->plt.refcount += 1; |
b34976b6 | 5178 | return TRUE; |
1e2f5b6e AM |
5179 | } |
5180 | ||
e054468f AM |
5181 | static bfd_boolean |
5182 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5183 | { | |
5184 | return (r_type == R_PPC64_REL24 | |
5185 | || r_type == R_PPC64_REL14 | |
5186 | || r_type == R_PPC64_REL14_BRTAKEN | |
5187 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5188 | || r_type == R_PPC64_ADDR24 | |
5189 | || r_type == R_PPC64_ADDR14 | |
5190 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
5191 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
5192 | } | |
5193 | ||
5bd4f169 | 5194 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5195 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5196 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5197 | |
b34976b6 | 5198 | static bfd_boolean |
4ce794b7 AM |
5199 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5200 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5201 | { |
65f38f15 | 5202 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5203 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5204 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5205 | const Elf_Internal_Rela *rel; |
5206 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5207 | asection *sreloc; |
1e2f5b6e | 5208 | asection **opd_sym_map; |
3a71aa26 | 5209 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 5210 | |
1049f94e | 5211 | if (info->relocatable) |
b34976b6 | 5212 | return TRUE; |
5bd4f169 | 5213 | |
680a3378 AM |
5214 | /* Don't do anything special with non-loaded, non-alloced sections. |
5215 | In particular, any relocs in such sections should not affect GOT | |
5216 | and PLT reference counting (ie. we don't allow them to create GOT | |
5217 | or PLT entries), there's no possibility or desire to optimize TLS | |
5218 | relocs, and there's not much point in propagating relocs to shared | |
5219 | libs that the dynamic linker won't relocate. */ | |
5220 | if ((sec->flags & SEC_ALLOC) == 0) | |
5221 | return TRUE; | |
5222 | ||
0c8d6e5c | 5223 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5224 | |
65f38f15 | 5225 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5226 | if (htab == NULL) |
5227 | return FALSE; | |
5228 | ||
3a71aa26 AM |
5229 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5230 | FALSE, FALSE, TRUE); | |
5231 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5232 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5233 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5234 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5235 | sreloc = NULL; |
1e2f5b6e | 5236 | opd_sym_map = NULL; |
f6c7c3e8 AM |
5237 | if (ppc64_elf_section_data (sec) != NULL |
5238 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) | |
5239 | opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec; | |
5bd4f169 AM |
5240 | |
5241 | rel_end = relocs + sec->reloc_count; | |
5242 | for (rel = relocs; rel < rel_end; rel++) | |
5243 | { | |
5244 | unsigned long r_symndx; | |
5245 | struct elf_link_hash_entry *h; | |
04c9666a | 5246 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5247 | int tls_type; |
7c8fe5c4 | 5248 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 5249 | struct plt_entry **ifunc; |
5bd4f169 AM |
5250 | |
5251 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5252 | if (r_symndx < symtab_hdr->sh_info) | |
5253 | h = NULL; | |
5254 | else | |
973a3492 L |
5255 | { |
5256 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5257 | h = elf_follow_link (h); |
81fbe831 AM |
5258 | |
5259 | /* PR15323, ref flags aren't set for references in the same | |
5260 | object. */ | |
5261 | h->root.non_ir_ref = 1; | |
1c865ab2 AM |
5262 | |
5263 | if (h == htab->elf.hgot) | |
5264 | sec->has_toc_reloc = 1; | |
973a3492 | 5265 | } |
5bd4f169 | 5266 | |
727fc41e | 5267 | tls_type = 0; |
e054468f | 5268 | ifunc = NULL; |
25f23106 AM |
5269 | if (h != NULL) |
5270 | { | |
5271 | if (h->type == STT_GNU_IFUNC) | |
5272 | { | |
5273 | h->needs_plt = 1; | |
5274 | ifunc = &h->plt.plist; | |
5275 | } | |
5276 | } | |
5277 | else | |
5278 | { | |
5279 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5280 | abfd, r_symndx); | |
5281 | if (isym == NULL) | |
5282 | return FALSE; | |
5283 | ||
5284 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5285 | { | |
5286 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5287 | rel->r_addend, PLT_IFUNC); | |
5288 | if (ifunc == NULL) | |
5289 | return FALSE; | |
5290 | } | |
5291 | } | |
4ce794b7 | 5292 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
5293 | if (is_branch_reloc (r_type)) |
5294 | { | |
5295 | if (h != NULL && (h == tga || h == dottga)) | |
5296 | { | |
5297 | if (rel != relocs | |
5298 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5299 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5300 | /* We have a new-style __tls_get_addr call with a marker | |
5301 | reloc. */ | |
5302 | ; | |
5303 | else | |
5304 | /* Mark this section as having an old-style call. */ | |
5305 | sec->has_tls_get_addr_call = 1; | |
5306 | } | |
727fc41e | 5307 | |
e054468f | 5308 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5309 | if (ifunc != NULL |
5310 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5311 | return FALSE; | |
5312 | } | |
727fc41e | 5313 | |
a33d1f77 | 5314 | switch (r_type) |
5bd4f169 | 5315 | { |
727fc41e AM |
5316 | case R_PPC64_TLSGD: |
5317 | case R_PPC64_TLSLD: | |
5318 | /* These special tls relocs tie a call to __tls_get_addr with | |
5319 | its parameter symbol. */ | |
5320 | break; | |
5321 | ||
411e1bfb AM |
5322 | case R_PPC64_GOT_TLSLD16: |
5323 | case R_PPC64_GOT_TLSLD16_LO: | |
5324 | case R_PPC64_GOT_TLSLD16_HI: | |
5325 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5326 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5327 | goto dogottls; |
5328 | ||
5329 | case R_PPC64_GOT_TLSGD16: | |
5330 | case R_PPC64_GOT_TLSGD16_LO: | |
5331 | case R_PPC64_GOT_TLSGD16_HI: | |
5332 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5333 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5334 | goto dogottls; |
5335 | ||
5336 | case R_PPC64_GOT_TPREL16_DS: | |
5337 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5338 | case R_PPC64_GOT_TPREL16_HI: | |
5339 | case R_PPC64_GOT_TPREL16_HA: | |
afb93314 | 5340 | if (info->shared) |
411e1bfb AM |
5341 | info->flags |= DF_STATIC_TLS; |
5342 | tls_type = TLS_TLS | TLS_TPREL; | |
5343 | goto dogottls; | |
5344 | ||
5345 | case R_PPC64_GOT_DTPREL16_DS: | |
5346 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5347 | case R_PPC64_GOT_DTPREL16_HI: | |
5348 | case R_PPC64_GOT_DTPREL16_HA: | |
5349 | tls_type = TLS_TLS | TLS_DTPREL; | |
5350 | dogottls: | |
5351 | sec->has_tls_reloc = 1; | |
5352 | /* Fall thru */ | |
5353 | ||
5bd4f169 | 5354 | case R_PPC64_GOT16: |
5bd4f169 | 5355 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5356 | case R_PPC64_GOT16_HA: |
5357 | case R_PPC64_GOT16_HI: | |
5358 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5359 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5360 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5361 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5362 | if (r_type == R_PPC64_GOT_TLSLD16 |
5363 | || r_type == R_PPC64_GOT_TLSGD16 | |
5364 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5365 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5366 | || r_type == R_PPC64_GOT16 | |
5367 | || r_type == R_PPC64_GOT16_DS) | |
5368 | { | |
5369 | htab->do_multi_toc = 1; | |
d77c8a4b | 5370 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5371 | } |
5372 | ||
e717da7e AM |
5373 | if (ppc64_elf_tdata (abfd)->got == NULL |
5374 | && !create_got_section (abfd, info)) | |
b34976b6 | 5375 | return FALSE; |
5bd4f169 AM |
5376 | |
5377 | if (h != NULL) | |
5378 | { | |
411e1bfb AM |
5379 | struct ppc_link_hash_entry *eh; |
5380 | struct got_entry *ent; | |
65f38f15 | 5381 | |
411e1bfb AM |
5382 | eh = (struct ppc_link_hash_entry *) h; |
5383 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5384 | if (ent->addend == rel->r_addend | |
e717da7e | 5385 | && ent->owner == abfd |
411e1bfb AM |
5386 | && ent->tls_type == tls_type) |
5387 | break; | |
5388 | if (ent == NULL) | |
5bd4f169 | 5389 | { |
411e1bfb | 5390 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5391 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5392 | if (ent == NULL) |
b34976b6 | 5393 | return FALSE; |
411e1bfb AM |
5394 | ent->next = eh->elf.got.glist; |
5395 | ent->addend = rel->r_addend; | |
e717da7e | 5396 | ent->owner = abfd; |
411e1bfb | 5397 | ent->tls_type = tls_type; |
927be08e | 5398 | ent->is_indirect = FALSE; |
411e1bfb AM |
5399 | ent->got.refcount = 0; |
5400 | eh->elf.got.glist = ent; | |
5bd4f169 | 5401 | } |
411e1bfb | 5402 | ent->got.refcount += 1; |
e7b938ca | 5403 | eh->tls_mask |= tls_type; |
5bd4f169 | 5404 | } |
411e1bfb AM |
5405 | else |
5406 | /* This is a global offset table entry for a local symbol. */ | |
5407 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5408 | rel->r_addend, tls_type)) | |
5409 | return FALSE; | |
a345bc8d AM |
5410 | |
5411 | /* We may also need a plt entry if the symbol turns out to be | |
5412 | an ifunc. */ | |
f6c7c3e8 | 5413 | if (h != NULL && !info->shared && abiversion (abfd) != 1) |
a345bc8d AM |
5414 | { |
5415 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5416 | return FALSE; | |
5417 | } | |
5bd4f169 AM |
5418 | break; |
5419 | ||
5bd4f169 | 5420 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5421 | case R_PPC64_PLT16_HI: |
5422 | case R_PPC64_PLT16_LO: | |
5423 | case R_PPC64_PLT32: | |
5424 | case R_PPC64_PLT64: | |
5bd4f169 | 5425 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5426 | actually build the entry in adjust_dynamic_symbol, |
5427 | because this might be a case of linking PIC code without | |
5428 | linking in any dynamic objects, in which case we don't | |
5429 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5430 | if (h == NULL) |
5431 | { | |
5432 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5433 | table entry for a local symbol. */ |
5bd4f169 | 5434 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5435 | return FALSE; |
5bd4f169 | 5436 | } |
411e1bfb | 5437 | else |
e054468f AM |
5438 | { |
5439 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5440 | return FALSE; | |
5441 | h->needs_plt = 1; | |
5442 | if (h->root.root.string[0] == '.' | |
5443 | && h->root.root.string[1] != '\0') | |
5444 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5445 | } | |
5bd4f169 AM |
5446 | break; |
5447 | ||
5448 | /* The following relocations don't need to propagate the | |
5449 | relocation if linking a shared object since they are | |
5450 | section relative. */ | |
5451 | case R_PPC64_SECTOFF: | |
5452 | case R_PPC64_SECTOFF_LO: | |
5453 | case R_PPC64_SECTOFF_HI: | |
5454 | case R_PPC64_SECTOFF_HA: | |
5455 | case R_PPC64_SECTOFF_DS: | |
5456 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5457 | case R_PPC64_DTPREL16: |
5458 | case R_PPC64_DTPREL16_LO: | |
5459 | case R_PPC64_DTPREL16_HI: | |
5460 | case R_PPC64_DTPREL16_HA: | |
5461 | case R_PPC64_DTPREL16_DS: | |
5462 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5463 | case R_PPC64_DTPREL16_HIGH: |
5464 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5465 | case R_PPC64_DTPREL16_HIGHER: |
5466 | case R_PPC64_DTPREL16_HIGHERA: | |
5467 | case R_PPC64_DTPREL16_HIGHEST: | |
5468 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5469 | break; |
5470 | ||
ad8e1ba5 | 5471 | /* Nor do these. */ |
25f23106 AM |
5472 | case R_PPC64_REL16: |
5473 | case R_PPC64_REL16_LO: | |
5474 | case R_PPC64_REL16_HI: | |
5475 | case R_PPC64_REL16_HA: | |
5476 | break; | |
5477 | ||
45965137 AM |
5478 | /* Not supported as a dynamic relocation. */ |
5479 | case R_PPC64_ADDR64_LOCAL: | |
5480 | if (info->shared) | |
5481 | { | |
5482 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5483 | ppc_howto_init (); | |
5484 | info->callbacks->einfo (_("%P: %H: %s reloc unsupported " | |
5485 | "in shared libraries and PIEs.\n"), | |
5486 | abfd, sec, rel->r_offset, | |
5487 | ppc64_elf_howto_table[r_type]->name); | |
5488 | bfd_set_error (bfd_error_bad_value); | |
5489 | return FALSE; | |
5490 | } | |
5491 | break; | |
5492 | ||
ad8e1ba5 | 5493 | case R_PPC64_TOC16: |
33c0ec9d AM |
5494 | case R_PPC64_TOC16_DS: |
5495 | htab->do_multi_toc = 1; | |
d77c8a4b | 5496 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5497 | case R_PPC64_TOC16_LO: |
5498 | case R_PPC64_TOC16_HI: | |
5499 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5500 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5501 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5502 | break; |
5503 | ||
5bd4f169 AM |
5504 | /* This relocation describes the C++ object vtable hierarchy. |
5505 | Reconstruct it for later use during GC. */ | |
5506 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5507 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5508 | return FALSE; |
5bd4f169 AM |
5509 | break; |
5510 | ||
5511 | /* This relocation describes which C++ vtable entries are actually | |
5512 | used. Record for later use during GC. */ | |
5513 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5514 | BFD_ASSERT (h != NULL); |
5515 | if (h != NULL | |
5516 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5517 | return FALSE; |
5bd4f169 AM |
5518 | break; |
5519 | ||
721956f4 AM |
5520 | case R_PPC64_REL14: |
5521 | case R_PPC64_REL14_BRTAKEN: | |
5522 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5523 | { |
5524 | asection *dest = NULL; | |
5525 | ||
5526 | /* Heuristic: If jumping outside our section, chances are | |
5527 | we are going to need a stub. */ | |
5528 | if (h != NULL) | |
5529 | { | |
5530 | /* If the sym is weak it may be overridden later, so | |
5531 | don't assume we know where a weak sym lives. */ | |
5532 | if (h->root.type == bfd_link_hash_defined) | |
5533 | dest = h->root.u.def.section; | |
5534 | } | |
5535 | else | |
87d72d41 AM |
5536 | { |
5537 | Elf_Internal_Sym *isym; | |
5538 | ||
5539 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5540 | abfd, r_symndx); | |
5541 | if (isym == NULL) | |
5542 | return FALSE; | |
5543 | ||
5544 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5545 | } | |
5546 | ||
220c76dd | 5547 | if (dest != sec) |
7c8fe5c4 | 5548 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5549 | } |
721956f4 AM |
5550 | /* Fall through. */ |
5551 | ||
5d1634d7 | 5552 | case R_PPC64_REL24: |
e054468f | 5553 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5554 | { |
5555 | /* We may need a .plt entry if the function this reloc | |
5556 | refers to is in a shared lib. */ | |
e054468f | 5557 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5558 | return FALSE; |
e054468f AM |
5559 | h->needs_plt = 1; |
5560 | if (h->root.root.string[0] == '.' | |
5561 | && h->root.root.string[1] != '\0') | |
5562 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5563 | if (h == tga || h == dottga) |
411e1bfb | 5564 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5565 | } |
5566 | break; | |
5567 | ||
5568 | case R_PPC64_TPREL64: | |
5569 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
afb93314 | 5570 | if (info->shared) |
411e1bfb AM |
5571 | info->flags |= DF_STATIC_TLS; |
5572 | goto dotlstoc; | |
5573 | ||
5574 | case R_PPC64_DTPMOD64: | |
5575 | if (rel + 1 < rel_end | |
5576 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5577 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5578 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5579 | else |
951fd09b | 5580 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5581 | goto dotlstoc; |
5582 | ||
5583 | case R_PPC64_DTPREL64: | |
5584 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5585 | if (rel != relocs | |
5586 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5587 | && rel[-1].r_offset == rel->r_offset - 8) | |
5588 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5589 | Don't mark with TLS_DTPREL. */ | |
5590 | goto dodyn; | |
5591 | ||
5592 | dotlstoc: | |
5593 | sec->has_tls_reloc = 1; | |
5594 | if (h != NULL) | |
5595 | { | |
5596 | struct ppc_link_hash_entry *eh; | |
5597 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5598 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5599 | } |
5600 | else | |
5601 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5602 | rel->r_addend, tls_type)) | |
5603 | return FALSE; | |
5604 | ||
7c8fe5c4 AM |
5605 | ppc64_sec = ppc64_elf_section_data (sec); |
5606 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5607 | { |
3a71aa26 AM |
5608 | bfd_size_type amt; |
5609 | ||
e7b938ca | 5610 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5611 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5612 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5613 | if (ppc64_sec->u.toc.symndx == NULL) | |
5614 | return FALSE; | |
5615 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5616 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5617 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5618 | return FALSE; |
7c8fe5c4 AM |
5619 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5620 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5621 | } |
5622 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5623 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5624 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5625 | |
5626 | /* Mark the second slot of a GD or LD entry. | |
5627 | -1 to indicate GD and -2 to indicate LD. */ | |
5628 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5629 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5630 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5631 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5632 | goto dodyn; |
5633 | ||
5634 | case R_PPC64_TPREL16: | |
5635 | case R_PPC64_TPREL16_LO: | |
5636 | case R_PPC64_TPREL16_HI: | |
5637 | case R_PPC64_TPREL16_HA: | |
5638 | case R_PPC64_TPREL16_DS: | |
5639 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5640 | case R_PPC64_TPREL16_HIGH: |
5641 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5642 | case R_PPC64_TPREL16_HIGHER: |
5643 | case R_PPC64_TPREL16_HIGHERA: | |
5644 | case R_PPC64_TPREL16_HIGHEST: | |
5645 | case R_PPC64_TPREL16_HIGHESTA: | |
5646 | if (info->shared) | |
5647 | { | |
afb93314 | 5648 | info->flags |= DF_STATIC_TLS; |
411e1bfb | 5649 | goto dodyn; |
5d1634d7 AM |
5650 | } |
5651 | break; | |
5652 | ||
e86ce104 | 5653 | case R_PPC64_ADDR64: |
1e2f5b6e | 5654 | if (opd_sym_map != NULL |
1e2f5b6e | 5655 | && rel + 1 < rel_end |
4ce794b7 | 5656 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5657 | { |
8387904d AM |
5658 | if (h != NULL) |
5659 | { | |
5660 | if (h->root.root.string[0] == '.' | |
5661 | && h->root.root.string[1] != 0 | |
b31867b6 | 5662 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5663 | ; |
5664 | else | |
5665 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5666 | } | |
5667 | else | |
5668 | { | |
5669 | asection *s; | |
87d72d41 | 5670 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5671 | |
87d72d41 AM |
5672 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5673 | abfd, r_symndx); | |
5674 | if (isym == NULL) | |
8387904d | 5675 | return FALSE; |
87d72d41 AM |
5676 | |
5677 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5678 | if (s != NULL && s != sec) | |
3f764659 | 5679 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5680 | } |
1e2f5b6e | 5681 | } |
e86ce104 AM |
5682 | /* Fall through. */ |
5683 | ||
65f38f15 AM |
5684 | case R_PPC64_ADDR16: |
5685 | case R_PPC64_ADDR16_DS: | |
5686 | case R_PPC64_ADDR16_HA: | |
5687 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5688 | case R_PPC64_ADDR16_HIGH: |
5689 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5690 | case R_PPC64_ADDR16_HIGHER: |
5691 | case R_PPC64_ADDR16_HIGHERA: | |
5692 | case R_PPC64_ADDR16_HIGHEST: | |
5693 | case R_PPC64_ADDR16_HIGHESTA: | |
5694 | case R_PPC64_ADDR16_LO: | |
5695 | case R_PPC64_ADDR16_LO_DS: | |
f6c7c3e8 | 5696 | if (h != NULL && !info->shared && abiversion (abfd) != 1 |
a345bc8d AM |
5697 | && rel->r_addend == 0) |
5698 | { | |
5699 | /* We may need a .plt entry if this reloc refers to a | |
5700 | function in a shared lib. */ | |
5701 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5702 | return FALSE; | |
5703 | h->pointer_equality_needed = 1; | |
5704 | } | |
5705 | /* Fall through. */ | |
5706 | ||
5707 | case R_PPC64_REL30: | |
5708 | case R_PPC64_REL32: | |
5709 | case R_PPC64_REL64: | |
5710 | case R_PPC64_ADDR14: | |
5711 | case R_PPC64_ADDR14_BRNTAKEN: | |
5712 | case R_PPC64_ADDR14_BRTAKEN: | |
65f38f15 | 5713 | case R_PPC64_ADDR24: |
65f38f15 | 5714 | case R_PPC64_ADDR32: |
65f38f15 AM |
5715 | case R_PPC64_UADDR16: |
5716 | case R_PPC64_UADDR32: | |
5717 | case R_PPC64_UADDR64: | |
5bd4f169 | 5718 | case R_PPC64_TOC: |
81848ca0 AM |
5719 | if (h != NULL && !info->shared) |
5720 | /* We may need a copy reloc. */ | |
f5385ebf | 5721 | h->non_got_ref = 1; |
81848ca0 | 5722 | |
41bd81ab | 5723 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5724 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5725 | break; |
e86ce104 | 5726 | |
65f38f15 AM |
5727 | /* If we are creating a shared library, and this is a reloc |
5728 | against a global symbol, or a non PC relative reloc | |
5729 | against a local symbol, then we need to copy the reloc | |
5730 | into the shared library. However, if we are linking with | |
5731 | -Bsymbolic, we do not need to copy a reloc against a | |
5732 | global symbol which is defined in an object we are | |
5733 | including in the link (i.e., DEF_REGULAR is set). At | |
5734 | this point we have not seen all the input files, so it is | |
5735 | possible that DEF_REGULAR is not set now but will be set | |
5736 | later (it is never cleared). In case of a weak definition, | |
5737 | DEF_REGULAR may be cleared later by a strong definition in | |
5738 | a shared library. We account for that possibility below by | |
f4656909 | 5739 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5740 | table entry. A similar situation occurs when creating |
5741 | shared libraries and symbol visibility changes render the | |
5742 | symbol local. | |
5743 | ||
5744 | If on the other hand, we are creating an executable, we | |
5745 | may need to keep relocations for symbols satisfied by a | |
5746 | dynamic library if we manage to avoid copy relocs for the | |
5747 | symbol. */ | |
411e1bfb | 5748 | dodyn: |
65f38f15 | 5749 | if ((info->shared |
1d483afe | 5750 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 5751 | || (h != NULL |
198f1157 | 5752 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 5753 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 5754 | || !h->def_regular)))) |
f4656909 AM |
5755 | || (ELIMINATE_COPY_RELOCS |
5756 | && !info->shared | |
65f38f15 AM |
5757 | && h != NULL |
5758 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5759 | || !h->def_regular)) |
5760 | || (!info->shared | |
5761 | && ifunc != NULL)) | |
5bd4f169 | 5762 | { |
65f38f15 AM |
5763 | /* We must copy these reloc types into the output file. |
5764 | Create a reloc section in dynobj and make room for | |
5765 | this reloc. */ | |
5bd4f169 AM |
5766 | if (sreloc == NULL) |
5767 | { | |
83bac4b0 NC |
5768 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5769 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5770 | |
5bd4f169 | 5771 | if (sreloc == NULL) |
83bac4b0 | 5772 | return FALSE; |
5bd4f169 AM |
5773 | } |
5774 | ||
65f38f15 AM |
5775 | /* If this is a global symbol, we count the number of |
5776 | relocations we need for this symbol. */ | |
5777 | if (h != NULL) | |
5778 | { | |
19e08130 AM |
5779 | struct elf_dyn_relocs *p; |
5780 | struct elf_dyn_relocs **head; | |
5781 | ||
ec338859 | 5782 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
5783 | p = *head; |
5784 | if (p == NULL || p->sec != sec) | |
5785 | { | |
5786 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5787 | if (p == NULL) | |
5788 | return FALSE; | |
5789 | p->next = *head; | |
5790 | *head = p; | |
5791 | p->sec = sec; | |
5792 | p->count = 0; | |
5793 | p->pc_count = 0; | |
5794 | } | |
5795 | p->count += 1; | |
5796 | if (!must_be_dyn_reloc (info, r_type)) | |
5797 | p->pc_count += 1; | |
65f38f15 AM |
5798 | } |
5799 | else | |
5800 | { | |
ec338859 AM |
5801 | /* Track dynamic relocs needed for local syms too. |
5802 | We really need local syms available to do this | |
5803 | easily. Oh well. */ | |
19e08130 AM |
5804 | struct ppc_dyn_relocs *p; |
5805 | struct ppc_dyn_relocs **head; | |
5806 | bfd_boolean is_ifunc; | |
ec338859 | 5807 | asection *s; |
6edfbbad | 5808 | void *vpp; |
87d72d41 | 5809 | Elf_Internal_Sym *isym; |
6edfbbad | 5810 | |
87d72d41 AM |
5811 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5812 | abfd, r_symndx); | |
5813 | if (isym == NULL) | |
b34976b6 | 5814 | return FALSE; |
ec338859 | 5815 | |
87d72d41 AM |
5816 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5817 | if (s == NULL) | |
5818 | s = sec; | |
5819 | ||
6edfbbad | 5820 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5821 | head = (struct ppc_dyn_relocs **) vpp; |
5822 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5823 | p = *head; | |
5824 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5825 | p = p->next; | |
5826 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5827 | { | |
5828 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5829 | if (p == NULL) | |
5830 | return FALSE; | |
5831 | p->next = *head; | |
5832 | *head = p; | |
5833 | p->sec = sec; | |
5834 | p->ifunc = is_ifunc; | |
5835 | p->count = 0; | |
5836 | } | |
5837 | p->count += 1; | |
ec338859 | 5838 | } |
65f38f15 | 5839 | } |
5bd4f169 | 5840 | break; |
65f38f15 AM |
5841 | |
5842 | default: | |
96e0dda4 | 5843 | break; |
5bd4f169 AM |
5844 | } |
5845 | } | |
5846 | ||
b34976b6 | 5847 | return TRUE; |
5bd4f169 AM |
5848 | } |
5849 | ||
ee67d69a AM |
5850 | /* Merge backend specific data from an object file to the output |
5851 | object file when linking. */ | |
5852 | ||
5853 | static bfd_boolean | |
5854 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5855 | { | |
5856 | unsigned long iflags, oflags; | |
5857 | ||
5858 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5859 | return TRUE; | |
5860 | ||
5861 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5862 | return TRUE; | |
5863 | ||
5864 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5865 | return FALSE; | |
5866 | ||
5867 | iflags = elf_elfheader (ibfd)->e_flags; | |
5868 | oflags = elf_elfheader (obfd)->e_flags; | |
5869 | ||
f6c7c3e8 | 5870 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a AM |
5871 | { |
5872 | (*_bfd_error_handler) | |
5873 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
5874 | bfd_set_error (bfd_error_bad_value); | |
5875 | return FALSE; | |
5876 | } | |
f6c7c3e8 | 5877 | else if (iflags != oflags && iflags != 0) |
ee67d69a AM |
5878 | { |
5879 | (*_bfd_error_handler) | |
5880 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
5881 | ibfd, iflags, oflags); | |
5882 | bfd_set_error (bfd_error_bad_value); | |
5883 | return FALSE; | |
5884 | } | |
5885 | ||
5886 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
5887 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
5888 | ||
5889 | return TRUE; | |
5890 | } | |
5891 | ||
5892 | static bfd_boolean | |
5893 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5894 | { | |
5895 | /* Print normal ELF private data. */ | |
5896 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5897 | ||
5898 | if (elf_elfheader (abfd)->e_flags != 0) | |
5899 | { | |
5900 | FILE *file = ptr; | |
5901 | ||
5902 | /* xgettext:c-format */ | |
5903 | fprintf (file, _("private flags = 0x%lx:"), | |
5904 | elf_elfheader (abfd)->e_flags); | |
5905 | ||
5906 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5907 | fprintf (file, _(" [abiv%ld]"), | |
5908 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5909 | fputc ('\n', file); | |
5910 | } | |
5911 | ||
5912 | return TRUE; | |
5913 | } | |
5914 | ||
8387904d | 5915 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5916 | of the code entry point, and its section, which must be in the same |
5917 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5918 | |
5919 | static bfd_vma | |
5920 | opd_entry_value (asection *opd_sec, | |
5921 | bfd_vma offset, | |
5922 | asection **code_sec, | |
aef36ac1 AM |
5923 | bfd_vma *code_off, |
5924 | bfd_boolean in_code_sec) | |
8387904d AM |
5925 | { |
5926 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5927 | Elf_Internal_Rela *relocs; |
8387904d | 5928 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5929 | bfd_vma val; |
8387904d | 5930 | |
9f296da3 AM |
5931 | /* No relocs implies we are linking a --just-symbols object, or looking |
5932 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5933 | if (opd_sec->reloc_count == 0) |
5934 | { | |
729eabd5 | 5935 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5936 | |
729eabd5 AM |
5937 | if (contents == NULL) |
5938 | { | |
5939 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5940 | return (bfd_vma) -1; | |
5941 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5942 | } | |
ee1e4ede | 5943 | |
729eabd5 | 5944 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5945 | if (code_sec != NULL) |
5946 | { | |
5947 | asection *sec, *likely = NULL; | |
ee1e4ede | 5948 | |
aef36ac1 | 5949 | if (in_code_sec) |
4b85d634 | 5950 | { |
aef36ac1 AM |
5951 | sec = *code_sec; |
5952 | if (sec->vma <= val | |
5953 | && val < sec->vma + sec->size) | |
5954 | likely = sec; | |
5955 | else | |
5956 | val = -1; | |
5957 | } | |
5958 | else | |
5959 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5960 | if (sec->vma <= val | |
5961 | && (sec->flags & SEC_LOAD) != 0 | |
5962 | && (sec->flags & SEC_ALLOC) != 0) | |
5963 | likely = sec; | |
5964 | if (likely != NULL) | |
5965 | { | |
5966 | *code_sec = likely; | |
5967 | if (code_off != NULL) | |
5968 | *code_off = val - likely->vma; | |
4b85d634 AM |
5969 | } |
5970 | } | |
aef36ac1 | 5971 | return val; |
4b85d634 AM |
5972 | } |
5973 | ||
0c8d6e5c | 5974 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5975 | |
729eabd5 | 5976 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5977 | if (relocs == NULL) |
5978 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5979 | |
8387904d | 5980 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5981 | lo = relocs; |
8387904d AM |
5982 | BFD_ASSERT (lo != NULL); |
5983 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5984 | val = (bfd_vma) -1; |
8387904d AM |
5985 | while (lo < hi) |
5986 | { | |
5987 | look = lo + (hi - lo) / 2; | |
5988 | if (look->r_offset < offset) | |
5989 | lo = look + 1; | |
5990 | else if (look->r_offset > offset) | |
5991 | hi = look; | |
5992 | else | |
5993 | { | |
0ffa91dd NC |
5994 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5995 | ||
8387904d AM |
5996 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5997 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5998 | { | |
5999 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6000 | asection *sec = NULL; |
8387904d | 6001 | |
b53dfeb2 AM |
6002 | if (symndx >= symtab_hdr->sh_info |
6003 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6004 | { |
6005 | struct elf_link_hash_entry **sym_hashes; | |
6006 | struct elf_link_hash_entry *rh; | |
6007 | ||
6008 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6009 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6010 | if (rh != NULL) |
6011 | { | |
6012 | rh = elf_follow_link (rh); | |
6013 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
6014 | || rh->root.type == bfd_link_hash_defweak); | |
6015 | val = rh->root.u.def.value; | |
6016 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6017 | if (sec->owner != opd_bfd) |
6018 | { | |
6019 | sec = NULL; | |
6020 | val = (bfd_vma) -1; | |
6021 | } | |
6022 | } | |
6023 | } | |
6024 | ||
6025 | if (sec == NULL) | |
6026 | { | |
6027 | Elf_Internal_Sym *sym; | |
6028 | ||
6029 | if (symndx < symtab_hdr->sh_info) | |
6030 | { | |
6031 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6032 | if (sym == NULL) | |
6033 | { | |
6034 | size_t symcnt = symtab_hdr->sh_info; | |
6035 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6036 | symcnt, 0, | |
6037 | NULL, NULL, NULL); | |
6038 | if (sym == NULL) | |
6039 | break; | |
6040 | symtab_hdr->contents = (bfd_byte *) sym; | |
6041 | } | |
6042 | sym += symndx; | |
128205bb AM |
6043 | } |
6044 | else | |
6045 | { | |
b53dfeb2 AM |
6046 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6047 | 1, symndx, | |
6048 | NULL, NULL, NULL); | |
128205bb AM |
6049 | if (sym == NULL) |
6050 | break; | |
128205bb | 6051 | } |
b53dfeb2 AM |
6052 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6053 | if (sec == NULL) | |
6054 | break; | |
6055 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6056 | val = sym->st_value; | |
8387904d | 6057 | } |
b53dfeb2 | 6058 | |
8387904d AM |
6059 | val += look->r_addend; |
6060 | if (code_off != NULL) | |
6061 | *code_off = val; | |
6062 | if (code_sec != NULL) | |
aef36ac1 AM |
6063 | { |
6064 | if (in_code_sec && *code_sec != sec) | |
6065 | return -1; | |
6066 | else | |
6067 | *code_sec = sec; | |
6068 | } | |
b53dfeb2 | 6069 | if (sec->output_section != NULL) |
8387904d | 6070 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6071 | } |
6072 | break; | |
6073 | } | |
6074 | } | |
645ea6a9 | 6075 | |
645ea6a9 | 6076 | return val; |
8387904d AM |
6077 | } |
6078 | ||
aef36ac1 AM |
6079 | /* If the ELF symbol SYM might be a function in SEC, return the |
6080 | function size and set *CODE_OFF to the function's entry point, | |
6081 | otherwise return zero. */ | |
9f296da3 | 6082 | |
aef36ac1 AM |
6083 | static bfd_size_type |
6084 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6085 | bfd_vma *code_off) | |
9f296da3 | 6086 | { |
aef36ac1 AM |
6087 | bfd_size_type size; |
6088 | ||
6089 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6090 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6091 | return 0; | |
6092 | ||
6093 | size = 0; | |
6094 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6095 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6096 | ||
6097 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6098 | { |
aef36ac1 AM |
6099 | if (opd_entry_value (sym->section, sym->value, |
6100 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
6101 | return 0; | |
6102 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6103 | symbol. This size has nothing to do with the code size of the | |
6104 | function, which is what we're supposed to return, but the | |
6105 | code size isn't available without looking up the dot-sym. | |
6106 | However, doing that would be a waste of time particularly | |
6107 | since elf_find_function will look at the dot-sym anyway. | |
6108 | Now, elf_find_function will keep the largest size of any | |
6109 | function sym found at the code address of interest, so return | |
6110 | 1 here to avoid it incorrectly caching a larger function size | |
6111 | for a small function. This does mean we return the wrong | |
6112 | size for a new-ABI function of size 24, but all that does is | |
6113 | disable caching for such functions. */ | |
6114 | if (size == 24) | |
6115 | size = 1; | |
9f296da3 | 6116 | } |
aef36ac1 AM |
6117 | else |
6118 | { | |
6119 | if (sym->section != sec) | |
6120 | return 0; | |
6121 | *code_off = sym->value; | |
6122 | } | |
6123 | if (size == 0) | |
6124 | size = 1; | |
6125 | return size; | |
9f296da3 AM |
6126 | } |
6127 | ||
854b41e7 AM |
6128 | /* Return true if symbol is defined in a regular object file. */ |
6129 | ||
6130 | static bfd_boolean | |
6131 | is_static_defined (struct elf_link_hash_entry *h) | |
6132 | { | |
6133 | return ((h->root.type == bfd_link_hash_defined | |
6134 | || h->root.type == bfd_link_hash_defweak) | |
6135 | && h->root.u.def.section != NULL | |
6136 | && h->root.u.def.section->output_section != NULL); | |
6137 | } | |
6138 | ||
b31867b6 AM |
6139 | /* If FDH is a function descriptor symbol, return the associated code |
6140 | entry symbol if it is defined. Return NULL otherwise. */ | |
6141 | ||
6142 | static struct ppc_link_hash_entry * | |
6143 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6144 | { | |
6145 | if (fdh->is_func_descriptor) | |
6146 | { | |
6147 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6148 | if (fh->elf.root.type == bfd_link_hash_defined | |
6149 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6150 | return fh; | |
6151 | } | |
6152 | return NULL; | |
6153 | } | |
6154 | ||
6155 | /* If FH is a function code entry symbol, return the associated | |
6156 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6157 | ||
6158 | static struct ppc_link_hash_entry * | |
6159 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6160 | { | |
6161 | if (fh->oh != NULL | |
6162 | && fh->oh->is_func_descriptor) | |
6163 | { | |
6164 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6165 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6166 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6167 | return fdh; | |
6168 | } | |
6169 | return NULL; | |
6170 | } | |
6171 | ||
74f0fb50 AM |
6172 | /* Mark all our entry sym sections, both opd and code section. */ |
6173 | ||
6174 | static void | |
6175 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6176 | { | |
6177 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6178 | struct bfd_sym_chain *sym; | |
6179 | ||
4dfe6ac6 NC |
6180 | if (htab == NULL) |
6181 | return; | |
6182 | ||
74f0fb50 AM |
6183 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6184 | { | |
b31867b6 | 6185 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6186 | asection *sec; |
6187 | ||
6188 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6189 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6190 | if (eh == NULL) |
6191 | continue; | |
6192 | if (eh->elf.root.type != bfd_link_hash_defined | |
6193 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6194 | continue; | |
6195 | ||
b31867b6 AM |
6196 | fh = defined_code_entry (eh); |
6197 | if (fh != NULL) | |
74f0fb50 | 6198 | { |
b31867b6 | 6199 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6200 | sec->flags |= SEC_KEEP; |
6201 | } | |
6202 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6203 | && opd_entry_value (eh->elf.root.u.def.section, | |
6204 | eh->elf.root.u.def.value, | |
aef36ac1 | 6205 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6206 | sec->flags |= SEC_KEEP; |
6207 | ||
6208 | sec = eh->elf.root.u.def.section; | |
6209 | sec->flags |= SEC_KEEP; | |
6210 | } | |
6211 | } | |
6212 | ||
64d03ab5 AM |
6213 | /* Mark sections containing dynamically referenced symbols. When |
6214 | building shared libraries, we must assume that any visible symbol is | |
6215 | referenced. */ | |
6216 | ||
6217 | static bfd_boolean | |
6218 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6219 | { | |
6220 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6221 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6222 | struct ppc_link_hash_entry *fdh; |
b407645f | 6223 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6224 | |
64d03ab5 | 6225 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6226 | fdh = defined_func_desc (eh); |
6227 | if (fdh != NULL) | |
6228 | eh = fdh; | |
64d03ab5 AM |
6229 | |
6230 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6231 | || eh->elf.root.type == bfd_link_hash_defweak) | |
6232 | && (eh->elf.ref_dynamic | |
b407645f | 6233 | || (eh->elf.def_regular |
64d03ab5 | 6234 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6235 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
b407645f AM |
6236 | && (!info->executable |
6237 | || info->export_dynamic | |
6238 | || (eh->elf.dynamic | |
6239 | && d != NULL | |
6240 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
4c58e0d8 AM |
6241 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
6242 | || !bfd_hide_sym_by_version (info->version_info, | |
6243 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6244 | { |
6245 | asection *code_sec; | |
b31867b6 | 6246 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6247 | |
6248 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6249 | ||
6250 | /* Function descriptor syms cause the associated | |
6251 | function code sym section to be marked. */ | |
b31867b6 AM |
6252 | fh = defined_code_entry (eh); |
6253 | if (fh != NULL) | |
6254 | { | |
6255 | code_sec = fh->elf.root.u.def.section; | |
6256 | code_sec->flags |= SEC_KEEP; | |
6257 | } | |
64d03ab5 AM |
6258 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6259 | && opd_entry_value (eh->elf.root.u.def.section, | |
6260 | eh->elf.root.u.def.value, | |
aef36ac1 | 6261 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6262 | code_sec->flags |= SEC_KEEP; |
6263 | } | |
6264 | ||
6265 | return TRUE; | |
6266 | } | |
6267 | ||
5bd4f169 AM |
6268 | /* Return the section that should be marked against GC for a given |
6269 | relocation. */ | |
6270 | ||
6271 | static asection * | |
4ce794b7 | 6272 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6273 | struct bfd_link_info *info, |
4ce794b7 AM |
6274 | Elf_Internal_Rela *rel, |
6275 | struct elf_link_hash_entry *h, | |
6276 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6277 | { |
ccfa59ea AM |
6278 | asection *rsec; |
6279 | ||
ccfa59ea AM |
6280 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6281 | function sections, as all functions are referenced in .opd. */ | |
6282 | rsec = NULL; | |
6283 | if (get_opd_info (sec) != NULL) | |
6284 | return rsec; | |
1e2f5b6e | 6285 | |
5bd4f169 AM |
6286 | if (h != NULL) |
6287 | { | |
04c9666a | 6288 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6289 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6290 | |
4ce794b7 | 6291 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6292 | switch (r_type) |
5bd4f169 AM |
6293 | { |
6294 | case R_PPC64_GNU_VTINHERIT: | |
6295 | case R_PPC64_GNU_VTENTRY: | |
6296 | break; | |
6297 | ||
6298 | default: | |
6299 | switch (h->root.type) | |
6300 | { | |
6301 | case bfd_link_hash_defined: | |
6302 | case bfd_link_hash_defweak: | |
ccfa59ea | 6303 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6304 | fdh = defined_func_desc (eh); |
6305 | if (fdh != NULL) | |
6306 | eh = fdh; | |
1e2f5b6e AM |
6307 | |
6308 | /* Function descriptor syms cause the associated | |
6309 | function code sym section to be marked. */ | |
b31867b6 AM |
6310 | fh = defined_code_entry (eh); |
6311 | if (fh != NULL) | |
ccfa59ea AM |
6312 | { |
6313 | /* They also mark their opd section. */ | |
74f0fb50 | 6314 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6315 | |
b31867b6 | 6316 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6317 | } |
8387904d AM |
6318 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6319 | && opd_entry_value (eh->elf.root.u.def.section, | |
6320 | eh->elf.root.u.def.value, | |
aef36ac1 | 6321 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6322 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6323 | else |
1e2f5b6e AM |
6324 | rsec = h->root.u.def.section; |
6325 | break; | |
5bd4f169 AM |
6326 | |
6327 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6328 | rsec = h->root.u.c.p->section; |
6329 | break; | |
5bd4f169 AM |
6330 | |
6331 | default: | |
fb34365b | 6332 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6333 | } |
6334 | } | |
6335 | } | |
6336 | else | |
6337 | { | |
74f0fb50 | 6338 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6339 | |
6340 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6341 | opd = get_opd_info (rsec); |
6342 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6343 | { |
74f0fb50 | 6344 | rsec->gc_mark = 1; |
ccfa59ea | 6345 | |
74f0fb50 | 6346 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 6347 | } |
5bd4f169 AM |
6348 | } |
6349 | ||
1e2f5b6e | 6350 | return rsec; |
5bd4f169 AM |
6351 | } |
6352 | ||
65f38f15 AM |
6353 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
6354 | section being removed. */ | |
5bd4f169 | 6355 | |
b34976b6 | 6356 | static bfd_boolean |
4ce794b7 AM |
6357 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
6358 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 6359 | { |
411e1bfb | 6360 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6361 | Elf_Internal_Shdr *symtab_hdr; |
6362 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 6363 | struct got_entry **local_got_ents; |
5bd4f169 | 6364 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 6365 | |
7dda2462 TG |
6366 | if (info->relocatable) |
6367 | return TRUE; | |
6368 | ||
680a3378 AM |
6369 | if ((sec->flags & SEC_ALLOC) == 0) |
6370 | return TRUE; | |
6371 | ||
ec338859 AM |
6372 | elf_section_data (sec)->local_dynrel = NULL; |
6373 | ||
411e1bfb | 6374 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6375 | if (htab == NULL) |
6376 | return FALSE; | |
6377 | ||
0ffa91dd | 6378 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 6379 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 6380 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
6381 | |
6382 | relend = relocs + sec->reloc_count; | |
6383 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
6384 | { |
6385 | unsigned long r_symndx; | |
04c9666a | 6386 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 6387 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 6388 | unsigned char tls_type = 0; |
5bd4f169 | 6389 | |
a33d1f77 | 6390 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 6391 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
6392 | if (r_symndx >= symtab_hdr->sh_info) |
6393 | { | |
6394 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
6395 | struct elf_dyn_relocs **pp; |
6396 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
6397 | |
6398 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6399 | h = elf_follow_link (h); |
58ac9f71 AM |
6400 | eh = (struct ppc_link_hash_entry *) h; |
6401 | ||
6402 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6403 | if (p->sec == sec) | |
6404 | { | |
6405 | /* Everything must go for SEC. */ | |
6406 | *pp = p->next; | |
6407 | break; | |
6408 | } | |
6409 | } | |
6410 | ||
e054468f AM |
6411 | if (is_branch_reloc (r_type)) |
6412 | { | |
6413 | struct plt_entry **ifunc = NULL; | |
6414 | if (h != NULL) | |
6415 | { | |
6416 | if (h->type == STT_GNU_IFUNC) | |
6417 | ifunc = &h->plt.plist; | |
6418 | } | |
6419 | else if (local_got_ents != NULL) | |
6420 | { | |
6421 | struct plt_entry **local_plt = (struct plt_entry **) | |
6422 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 6423 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
6424 | (local_plt + symtab_hdr->sh_info); |
6425 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
6426 | ifunc = local_plt + r_symndx; | |
6427 | } | |
6428 | if (ifunc != NULL) | |
6429 | { | |
6430 | struct plt_entry *ent; | |
6431 | ||
6432 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
6433 | if (ent->addend == rel->r_addend) | |
6434 | break; | |
6435 | if (ent == NULL) | |
6436 | abort (); | |
6437 | if (ent->plt.refcount > 0) | |
6438 | ent->plt.refcount -= 1; | |
6439 | continue; | |
6440 | } | |
6441 | } | |
6442 | ||
a33d1f77 AM |
6443 | switch (r_type) |
6444 | { | |
411e1bfb AM |
6445 | case R_PPC64_GOT_TLSLD16: |
6446 | case R_PPC64_GOT_TLSLD16_LO: | |
6447 | case R_PPC64_GOT_TLSLD16_HI: | |
6448 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 6449 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6450 | goto dogot; |
6451 | ||
6452 | case R_PPC64_GOT_TLSGD16: | |
6453 | case R_PPC64_GOT_TLSGD16_LO: | |
6454 | case R_PPC64_GOT_TLSGD16_HI: | |
6455 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6456 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6457 | goto dogot; |
6458 | ||
6459 | case R_PPC64_GOT_TPREL16_DS: | |
6460 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6461 | case R_PPC64_GOT_TPREL16_HI: | |
6462 | case R_PPC64_GOT_TPREL16_HA: | |
6463 | tls_type = TLS_TLS | TLS_TPREL; | |
6464 | goto dogot; | |
6465 | ||
6466 | case R_PPC64_GOT_DTPREL16_DS: | |
6467 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
6468 | case R_PPC64_GOT_DTPREL16_HI: | |
6469 | case R_PPC64_GOT_DTPREL16_HA: | |
6470 | tls_type = TLS_TLS | TLS_DTPREL; | |
6471 | goto dogot; | |
6472 | ||
a33d1f77 AM |
6473 | case R_PPC64_GOT16: |
6474 | case R_PPC64_GOT16_DS: | |
6475 | case R_PPC64_GOT16_HA: | |
6476 | case R_PPC64_GOT16_HI: | |
6477 | case R_PPC64_GOT16_LO: | |
6478 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
6479 | dogot: |
6480 | { | |
6481 | struct got_entry *ent; | |
6482 | ||
58ac9f71 AM |
6483 | if (h != NULL) |
6484 | ent = h->got.glist; | |
411e1bfb AM |
6485 | else |
6486 | ent = local_got_ents[r_symndx]; | |
6487 | ||
6488 | for (; ent != NULL; ent = ent->next) | |
6489 | if (ent->addend == rel->r_addend | |
e717da7e | 6490 | && ent->owner == abfd |
411e1bfb AM |
6491 | && ent->tls_type == tls_type) |
6492 | break; | |
6493 | if (ent == NULL) | |
6494 | abort (); | |
6495 | if (ent->got.refcount > 0) | |
6496 | ent->got.refcount -= 1; | |
6497 | } | |
a33d1f77 | 6498 | break; |
65f38f15 | 6499 | |
a33d1f77 AM |
6500 | case R_PPC64_PLT16_HA: |
6501 | case R_PPC64_PLT16_HI: | |
6502 | case R_PPC64_PLT16_LO: | |
6503 | case R_PPC64_PLT32: | |
6504 | case R_PPC64_PLT64: | |
721956f4 AM |
6505 | case R_PPC64_REL14: |
6506 | case R_PPC64_REL14_BRNTAKEN: | |
6507 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 6508 | case R_PPC64_REL24: |
58ac9f71 | 6509 | if (h != NULL) |
5d1634d7 | 6510 | { |
411e1bfb AM |
6511 | struct plt_entry *ent; |
6512 | ||
411e1bfb AM |
6513 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
6514 | if (ent->addend == rel->r_addend) | |
6515 | break; | |
7c6c1722 | 6516 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 6517 | ent->plt.refcount -= 1; |
5d1634d7 | 6518 | } |
e86ce104 | 6519 | break; |
5d1634d7 | 6520 | |
a33d1f77 AM |
6521 | default: |
6522 | break; | |
6523 | } | |
6524 | } | |
b34976b6 | 6525 | return TRUE; |
5bd4f169 AM |
6526 | } |
6527 | ||
deb0e272 AM |
6528 | /* The maximum size of .sfpr. */ |
6529 | #define SFPR_MAX (218*4) | |
6530 | ||
6531 | struct sfpr_def_parms | |
6532 | { | |
699733f6 AM |
6533 | const char name[12]; |
6534 | unsigned char lo, hi; | |
deb0e272 AM |
6535 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6536 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6537 | }; | |
6538 | ||
6539 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
6540 | ||
4dfe6ac6 | 6541 | static bfd_boolean |
deb0e272 AM |
6542 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
6543 | { | |
6544 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6545 | unsigned int i; | |
6546 | size_t len = strlen (parm->name); | |
6547 | bfd_boolean writing = FALSE; | |
699733f6 | 6548 | char sym[16]; |
deb0e272 | 6549 | |
4dfe6ac6 NC |
6550 | if (htab == NULL) |
6551 | return FALSE; | |
6552 | ||
deb0e272 AM |
6553 | memcpy (sym, parm->name, len); |
6554 | sym[len + 2] = 0; | |
6555 | ||
6556 | for (i = parm->lo; i <= parm->hi; i++) | |
6557 | { | |
6558 | struct elf_link_hash_entry *h; | |
6559 | ||
6560 | sym[len + 0] = i / 10 + '0'; | |
6561 | sym[len + 1] = i % 10 + '0'; | |
6562 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6563 | if (h != NULL | |
f5385ebf | 6564 | && !h->def_regular) |
deb0e272 AM |
6565 | { |
6566 | h->root.type = bfd_link_hash_defined; | |
6567 | h->root.u.def.section = htab->sfpr; | |
6568 | h->root.u.def.value = htab->sfpr->size; | |
6569 | h->type = STT_FUNC; | |
f5385ebf | 6570 | h->def_regular = 1; |
deb0e272 AM |
6571 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6572 | writing = TRUE; | |
6573 | if (htab->sfpr->contents == NULL) | |
6574 | { | |
6575 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6576 | if (htab->sfpr->contents == NULL) | |
6577 | return FALSE; | |
6578 | } | |
6579 | } | |
6580 | if (writing) | |
6581 | { | |
6582 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6583 | if (i != parm->hi) | |
6584 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6585 | else | |
6586 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6587 | htab->sfpr->size = p - htab->sfpr->contents; | |
6588 | } | |
6589 | } | |
6590 | ||
6591 | return TRUE; | |
6592 | } | |
6593 | ||
6594 | static bfd_byte * | |
6595 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6596 | { | |
6597 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6598 | return p + 4; | |
6599 | } | |
6600 | ||
6601 | static bfd_byte * | |
6602 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6603 | { | |
6604 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6605 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6606 | p = p + 4; |
6607 | bfd_put_32 (abfd, BLR, p); | |
6608 | return p + 4; | |
6609 | } | |
6610 | ||
6611 | static bfd_byte * | |
6612 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6613 | { | |
6614 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6615 | return p + 4; | |
6616 | } | |
6617 | ||
6618 | static bfd_byte * | |
6619 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6620 | { | |
a078d95a | 6621 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6622 | p = p + 4; |
6623 | p = restgpr0 (abfd, p, r); | |
6624 | bfd_put_32 (abfd, MTLR_R0, p); | |
6625 | p = p + 4; | |
6626 | if (r == 29) | |
6627 | { | |
6628 | p = restgpr0 (abfd, p, 30); | |
6629 | p = restgpr0 (abfd, p, 31); | |
6630 | } | |
6631 | bfd_put_32 (abfd, BLR, p); | |
6632 | return p + 4; | |
6633 | } | |
6634 | ||
6635 | static bfd_byte * | |
6636 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6637 | { | |
6638 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6639 | return p + 4; | |
6640 | } | |
6641 | ||
6642 | static bfd_byte * | |
6643 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6644 | { | |
6645 | p = savegpr1 (abfd, p, r); | |
6646 | bfd_put_32 (abfd, BLR, p); | |
6647 | return p + 4; | |
6648 | } | |
6649 | ||
6650 | static bfd_byte * | |
6651 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6652 | { | |
6653 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6654 | return p + 4; | |
6655 | } | |
6656 | ||
6657 | static bfd_byte * | |
6658 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6659 | { | |
6660 | p = restgpr1 (abfd, p, r); | |
6661 | bfd_put_32 (abfd, BLR, p); | |
6662 | return p + 4; | |
6663 | } | |
6664 | ||
6665 | static bfd_byte * | |
6666 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6667 | { | |
6668 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6669 | return p + 4; | |
6670 | } | |
6671 | ||
6672 | static bfd_byte * | |
6673 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6674 | { | |
6675 | p = savefpr (abfd, p, r); | |
a078d95a | 6676 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6677 | p = p + 4; |
6678 | bfd_put_32 (abfd, BLR, p); | |
6679 | return p + 4; | |
6680 | } | |
6681 | ||
6682 | static bfd_byte * | |
6683 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6684 | { | |
6685 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6686 | return p + 4; | |
6687 | } | |
6688 | ||
6689 | static bfd_byte * | |
6690 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6691 | { | |
a078d95a | 6692 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6693 | p = p + 4; |
6694 | p = restfpr (abfd, p, r); | |
6695 | bfd_put_32 (abfd, MTLR_R0, p); | |
6696 | p = p + 4; | |
6697 | if (r == 29) | |
6698 | { | |
6699 | p = restfpr (abfd, p, 30); | |
6700 | p = restfpr (abfd, p, 31); | |
6701 | } | |
6702 | bfd_put_32 (abfd, BLR, p); | |
6703 | return p + 4; | |
6704 | } | |
6705 | ||
6706 | static bfd_byte * | |
6707 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6708 | { | |
6709 | p = savefpr (abfd, p, r); | |
6710 | bfd_put_32 (abfd, BLR, p); | |
6711 | return p + 4; | |
6712 | } | |
6713 | ||
6714 | static bfd_byte * | |
6715 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6716 | { | |
6717 | p = restfpr (abfd, p, r); | |
6718 | bfd_put_32 (abfd, BLR, p); | |
6719 | return p + 4; | |
6720 | } | |
6721 | ||
6722 | static bfd_byte * | |
6723 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6724 | { | |
6725 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6726 | p = p + 4; | |
6727 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6728 | return p + 4; | |
6729 | } | |
6730 | ||
6731 | static bfd_byte * | |
6732 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6733 | { | |
6734 | p = savevr (abfd, p, r); | |
6735 | bfd_put_32 (abfd, BLR, p); | |
6736 | return p + 4; | |
6737 | } | |
6738 | ||
6739 | static bfd_byte * | |
6740 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6741 | { | |
6742 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6743 | p = p + 4; | |
6744 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6745 | return p + 4; | |
6746 | } | |
6747 | ||
6748 | static bfd_byte * | |
6749 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6750 | { | |
6751 | p = restvr (abfd, p, r); | |
6752 | bfd_put_32 (abfd, BLR, p); | |
6753 | return p + 4; | |
6754 | } | |
6755 | ||
e86ce104 AM |
6756 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6757 | information on function code symbol entries to their corresponding | |
6758 | function descriptor symbol entries. */ | |
deb0e272 | 6759 | |
b34976b6 | 6760 | static bfd_boolean |
4ce794b7 | 6761 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6762 | { |
e86ce104 | 6763 | struct bfd_link_info *info; |
65f38f15 | 6764 | struct ppc_link_hash_table *htab; |
411e1bfb | 6765 | struct plt_entry *ent; |
50bc7936 AM |
6766 | struct ppc_link_hash_entry *fh; |
6767 | struct ppc_link_hash_entry *fdh; | |
6768 | bfd_boolean force_local; | |
5bd4f169 | 6769 | |
50bc7936 AM |
6770 | fh = (struct ppc_link_hash_entry *) h; |
6771 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6772 | return TRUE; |
e86ce104 | 6773 | |
4ce794b7 | 6774 | info = inf; |
65f38f15 | 6775 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6776 | if (htab == NULL) |
6777 | return FALSE; | |
5bd4f169 | 6778 | |
c09bdfe5 AM |
6779 | /* Resolve undefined references to dot-symbols as the value |
6780 | in the function descriptor, if we have one in a regular object. | |
6781 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6782 | in dynamic objects are handled elsewhere. */ | |
6783 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6784 | && fh->was_undefined | |
b31867b6 AM |
6785 | && (fdh = defined_func_desc (fh)) != NULL |
6786 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6787 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6788 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6789 | &fh->elf.root.u.def.section, |
aef36ac1 | 6790 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6791 | { |
b31867b6 | 6792 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6793 | fh->elf.forced_local = 1; |
b31867b6 AM |
6794 | fh->elf.def_regular = fdh->elf.def_regular; |
6795 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6796 | } |
6797 | ||
e86ce104 AM |
6798 | /* If this is a function code symbol, transfer dynamic linking |
6799 | information to the function descriptor symbol. */ | |
50bc7936 | 6800 | if (!fh->is_func) |
b34976b6 | 6801 | return TRUE; |
e86ce104 | 6802 | |
50bc7936 | 6803 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6804 | if (ent->plt.refcount > 0) |
6805 | break; | |
50bc7936 AM |
6806 | if (ent == NULL |
6807 | || fh->elf.root.root.string[0] != '.' | |
6808 | || fh->elf.root.root.string[1] == '\0') | |
6809 | return TRUE; | |
5bd4f169 | 6810 | |
50bc7936 AM |
6811 | /* Find the corresponding function descriptor symbol. Create it |
6812 | as undefined if necessary. */ | |
5bd4f169 | 6813 | |
b31867b6 | 6814 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6815 | if (fdh == NULL |
df131623 | 6816 | && !info->executable |
50bc7936 AM |
6817 | && (fh->elf.root.type == bfd_link_hash_undefined |
6818 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6819 | { | |
908b32fc | 6820 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6821 | if (fdh == NULL) |
6822 | return FALSE; | |
50bc7936 | 6823 | } |
648cca2c | 6824 | |
908b32fc | 6825 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6826 | code symbol is strong undefined, make the fake sym the same. |
6827 | If the function code symbol is defined, then force the fake | |
6828 | descriptor local; We can't support overriding of symbols in a | |
6829 | shared library on a fake descriptor. */ | |
908b32fc AM |
6830 | |
6831 | if (fdh != NULL | |
6832 | && fdh->fake | |
433817dd | 6833 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6834 | { |
433817dd AM |
6835 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6836 | { | |
6837 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6838 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6839 | } | |
6840 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6841 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6842 | { | |
6843 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6844 | } | |
908b32fc AM |
6845 | } |
6846 | ||
50bc7936 | 6847 | if (fdh != NULL |
f5385ebf | 6848 | && !fdh->elf.forced_local |
df131623 | 6849 | && (!info->executable |
f5385ebf AM |
6850 | || fdh->elf.def_dynamic |
6851 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6852 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6853 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6854 | { | |
6855 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6856 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6857 | return FALSE; |
f5385ebf AM |
6858 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6859 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6860 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6861 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6862 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6863 | { |
40d16e0b | 6864 | move_plt_plist (fh, fdh); |
f5385ebf | 6865 | fdh->elf.needs_plt = 1; |
e86ce104 | 6866 | } |
50bc7936 | 6867 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6868 | fdh->oh = fh; |
6869 | fh->oh = fdh; | |
e86ce104 AM |
6870 | } |
6871 | ||
50bc7936 AM |
6872 | /* Now that the info is on the function descriptor, clear the |
6873 | function code sym info. Any function code syms for which we | |
6874 | don't have a definition in a regular file, we force local. | |
6875 | This prevents a shared library from exporting syms that have | |
6876 | been imported from another library. Function code syms that | |
6877 | are really in the library we must leave global to prevent the | |
6878 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6879 | force_local = (!fh->elf.def_regular |
6880 | || fdh == NULL | |
6881 | || !fdh->elf.def_regular | |
6882 | || fdh->elf.forced_local); | |
50bc7936 AM |
6883 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6884 | ||
b34976b6 | 6885 | return TRUE; |
e86ce104 | 6886 | } |
40b8271b | 6887 | |
e86ce104 | 6888 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6889 | this hook to a) provide some gcc support functions, and b) transfer |
6890 | dynamic linking information gathered so far on function code symbol | |
6891 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6892 | |
b34976b6 | 6893 | static bfd_boolean |
4ce794b7 AM |
6894 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6895 | struct bfd_link_info *info) | |
e86ce104 AM |
6896 | { |
6897 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6898 | unsigned int i; |
27fc25a1 | 6899 | static const struct sfpr_def_parms funcs[] = |
deb0e272 AM |
6900 | { |
6901 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6902 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6903 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6904 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6905 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6906 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6907 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6908 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6909 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6910 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6911 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6912 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6913 | }; | |
e86ce104 AM |
6914 | |
6915 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6916 | if (htab == NULL) |
6917 | return FALSE; | |
6918 | ||
5295321c AM |
6919 | if (!info->relocatable |
6920 | && htab->elf.hgot != NULL) | |
dba6fa9b AM |
6921 | { |
6922 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6923 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6924 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
6925 | htab->elf.hgot->type = STT_OBJECT; | |
6926 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6927 | htab->elf.hgot->root.u.def.value = 0; | |
6928 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6929 | htab->elf.hgot->def_regular = 1; | |
6930 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | |
6931 | | STV_HIDDEN); | |
6932 | } | |
c66bb0ee | 6933 | |
82bd7b59 AM |
6934 | if (htab->sfpr == NULL) |
6935 | /* We don't have any relocs. */ | |
b34976b6 | 6936 | return TRUE; |
82bd7b59 | 6937 | |
deb0e272 AM |
6938 | /* Provide any missing _save* and _rest* functions. */ |
6939 | htab->sfpr->size = 0; | |
7d4c687d | 6940 | if (htab->params->save_restore_funcs) |
27fc25a1 AM |
6941 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) |
6942 | if (!sfpr_define (info, &funcs[i])) | |
6943 | return FALSE; | |
82bd7b59 | 6944 | |
4ce794b7 | 6945 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6946 | |
eea6121a | 6947 | if (htab->sfpr->size == 0) |
8423293d | 6948 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6949 | |
b34976b6 | 6950 | return TRUE; |
e86ce104 AM |
6951 | } |
6952 | ||
a345bc8d AM |
6953 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
6954 | ||
6955 | static bfd_boolean | |
6956 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6957 | { | |
6958 | struct ppc_link_hash_entry *eh; | |
6959 | struct elf_dyn_relocs *p; | |
6960 | ||
6961 | eh = (struct ppc_link_hash_entry *) h; | |
6962 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6963 | { | |
6964 | asection *s = p->sec->output_section; | |
6965 | ||
6966 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6967 | return TRUE; | |
6968 | } | |
6969 | return FALSE; | |
6970 | } | |
6971 | ||
e86ce104 AM |
6972 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6973 | regular object. The current definition is in some section of the | |
6974 | dynamic object, but we're not including those sections. We have to | |
6975 | change the definition to something the rest of the link can | |
6976 | understand. */ | |
6977 | ||
b34976b6 | 6978 | static bfd_boolean |
4ce794b7 AM |
6979 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6980 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6981 | { |
6982 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6983 | asection *s; |
e86ce104 AM |
6984 | |
6985 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6986 | if (htab == NULL) |
6987 | return FALSE; | |
e86ce104 AM |
6988 | |
6989 | /* Deal with function syms. */ | |
6990 | if (h->type == STT_FUNC | |
e054468f | 6991 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6992 | || h->needs_plt) |
e86ce104 AM |
6993 | { |
6994 | /* Clear procedure linkage table information for any symbol that | |
6995 | won't need a .plt entry. */ | |
411e1bfb AM |
6996 | struct plt_entry *ent; |
6997 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6998 | if (ent->plt.refcount > 0) | |
6999 | break; | |
8387904d | 7000 | if (ent == NULL |
e054468f AM |
7001 | || (h->type != STT_GNU_IFUNC |
7002 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7003 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7004 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 7005 | { |
411e1bfb | 7006 | h->plt.plist = NULL; |
f5385ebf | 7007 | h->needs_plt = 0; |
d1eca1e4 | 7008 | h->pointer_equality_needed = 0; |
40b8271b | 7009 | } |
a345bc8d AM |
7010 | else if (abiversion (info->output_bfd) == 2) |
7011 | { | |
d1eca1e4 AM |
7012 | /* Taking a function's address in a read/write section |
7013 | doesn't require us to define the function symbol in the | |
7014 | executable on a global entry stub. A dynamic reloc can | |
7015 | be used instead. */ | |
7016 | if (h->pointer_equality_needed | |
1009ef28 | 7017 | && h->type != STT_GNU_IFUNC |
d1eca1e4 AM |
7018 | && !readonly_dynrelocs (h)) |
7019 | { | |
7020 | h->pointer_equality_needed = 0; | |
7021 | h->non_got_ref = 0; | |
7022 | } | |
7023 | ||
a345bc8d AM |
7024 | /* After adjust_dynamic_symbol, non_got_ref set in the |
7025 | non-shared case means that we have allocated space in | |
7026 | .dynbss for the symbol and thus dyn_relocs for this | |
7027 | symbol should be discarded. | |
7028 | If we get here we know we are making a PLT entry for this | |
7029 | symbol, and in an executable we'd normally resolve | |
7030 | relocations against this symbol to the PLT entry. Allow | |
7031 | dynamic relocs if the reference is weak, and the dynamic | |
7032 | relocs will not cause text relocation. */ | |
d1eca1e4 AM |
7033 | else if (!h->ref_regular_nonweak |
7034 | && h->non_got_ref | |
7035 | && h->type != STT_GNU_IFUNC | |
7036 | && !readonly_dynrelocs (h)) | |
a345bc8d AM |
7037 | h->non_got_ref = 0; |
7038 | ||
7039 | /* If making a plt entry, then we don't need copy relocs. */ | |
7040 | return TRUE; | |
7041 | } | |
5bd4f169 | 7042 | } |
bbd7ec4a | 7043 | else |
411e1bfb | 7044 | h->plt.plist = NULL; |
5bd4f169 AM |
7045 | |
7046 | /* If this is a weak symbol, and there is a real definition, the | |
7047 | processor independent code will have arranged for us to see the | |
7048 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 7049 | if (h->u.weakdef != NULL) |
5bd4f169 | 7050 | { |
f6e332e6 AM |
7051 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
7052 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
7053 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
7054 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 7055 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 7056 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 7057 | return TRUE; |
5bd4f169 AM |
7058 | } |
7059 | ||
5bd4f169 AM |
7060 | /* If we are creating a shared library, we must presume that the |
7061 | only references to the symbol are via the global offset table. | |
7062 | For such cases we need not do anything here; the relocations will | |
7063 | be handled correctly by relocate_section. */ | |
7064 | if (info->shared) | |
b34976b6 | 7065 | return TRUE; |
5bd4f169 | 7066 | |
65f38f15 AM |
7067 | /* If there are no references to this symbol that do not use the |
7068 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7069 | if (!h->non_got_ref) |
b34976b6 | 7070 | return TRUE; |
65f38f15 | 7071 | |
b186458a JJ |
7072 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
7073 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
7074 | return TRUE; | |
7075 | ||
a345bc8d AM |
7076 | /* If we didn't find any dynamic relocs in read-only sections, then |
7077 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
7078 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
65f38f15 | 7079 | { |
a345bc8d AM |
7080 | h->non_got_ref = 0; |
7081 | return TRUE; | |
65f38f15 AM |
7082 | } |
7083 | ||
5d35169e | 7084 | if (h->plt.plist != NULL) |
97b639ba AM |
7085 | { |
7086 | /* We should never get here, but unfortunately there are versions | |
7087 | of gcc out there that improperly (for this ABI) put initialized | |
7088 | function pointers, vtable refs and suchlike in read-only | |
7089 | sections. Allow them to proceed, but warn that this might | |
7090 | break at runtime. */ | |
25f53a85 | 7091 | info->callbacks->einfo |
bc30df16 | 7092 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
25f53a85 | 7093 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7094 | h->root.root.string); |
7095 | } | |
5d35169e AM |
7096 | |
7097 | /* This is a reference to a symbol defined by a dynamic object which | |
7098 | is not a function. */ | |
7099 | ||
5bd4f169 AM |
7100 | /* We must allocate the symbol in our .dynbss section, which will |
7101 | become part of the .bss section of the executable. There will be | |
7102 | an entry for this symbol in the .dynsym section. The dynamic | |
7103 | object will contain position independent code, so all references | |
7104 | from the dynamic object to this symbol will go through the global | |
7105 | offset table. The dynamic linker will use the .dynsym entry to | |
7106 | determine the address it must put in the global offset table, so | |
7107 | both the dynamic object and the regular object will refer to the | |
7108 | same memory location for the variable. */ | |
5bd4f169 | 7109 | |
04c9666a AM |
7110 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
7111 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
7112 | runtime process image. We need to remember the offset into the |
7113 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 7114 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7115 | { |
eea6121a | 7116 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7117 | h->needs_copy = 1; |
5bd4f169 AM |
7118 | } |
7119 | ||
4ce794b7 | 7120 | s = htab->dynbss; |
5bd4f169 | 7121 | |
027297b7 | 7122 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
7123 | } |
7124 | ||
e86ce104 AM |
7125 | /* If given a function descriptor symbol, hide both the function code |
7126 | sym and the descriptor. */ | |
7127 | static void | |
4ce794b7 AM |
7128 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7129 | struct elf_link_hash_entry *h, | |
7130 | bfd_boolean force_local) | |
e86ce104 | 7131 | { |
34814b9f | 7132 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7133 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7134 | ||
34814b9f AM |
7135 | eh = (struct ppc_link_hash_entry *) h; |
7136 | if (eh->is_func_descriptor) | |
e86ce104 | 7137 | { |
34814b9f | 7138 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7139 | |
721956f4 | 7140 | if (fh == NULL) |
d1329ca3 AM |
7141 | { |
7142 | const char *p, *q; | |
7143 | struct ppc_link_hash_table *htab; | |
7144 | char save; | |
7145 | ||
7146 | /* We aren't supposed to use alloca in BFD because on | |
7147 | systems which do not have alloca the version in libiberty | |
7148 | calls xmalloc, which might cause the program to crash | |
7149 | when it runs out of memory. This function doesn't have a | |
7150 | return status, so there's no way to gracefully return an | |
7151 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7152 | accessed; It's either a string in an ELF string table, |
7153 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7154 | |
34814b9f | 7155 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7156 | save = *p; |
7157 | *(char *) p = '.'; | |
7158 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7159 | if (htab == NULL) |
7160 | return; | |
7161 | ||
34814b9f AM |
7162 | fh = (struct ppc_link_hash_entry *) |
7163 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7164 | *(char *) p = save; |
7165 | ||
7166 | /* Unfortunately, if it so happens that the string we were | |
7167 | looking for was allocated immediately before this string, | |
7168 | then we overwrote the string terminator. That's the only | |
7169 | reason the lookup should fail. */ | |
7170 | if (fh == NULL) | |
7171 | { | |
34814b9f AM |
7172 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7173 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7174 | --q, --p; |
34814b9f AM |
7175 | if (q < eh->elf.root.root.string && *p == '.') |
7176 | fh = (struct ppc_link_hash_entry *) | |
7177 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
7178 | } |
7179 | if (fh != NULL) | |
7180 | { | |
34814b9f AM |
7181 | eh->oh = fh; |
7182 | fh->oh = eh; | |
d1329ca3 AM |
7183 | } |
7184 | } | |
e86ce104 | 7185 | if (fh != NULL) |
34814b9f | 7186 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7187 | } |
7188 | } | |
7189 | ||
411e1bfb | 7190 | static bfd_boolean |
8843416a AM |
7191 | get_sym_h (struct elf_link_hash_entry **hp, |
7192 | Elf_Internal_Sym **symp, | |
7193 | asection **symsecp, | |
f961d9dd | 7194 | unsigned char **tls_maskp, |
8843416a AM |
7195 | Elf_Internal_Sym **locsymsp, |
7196 | unsigned long r_symndx, | |
7197 | bfd *ibfd) | |
411e1bfb | 7198 | { |
0ffa91dd | 7199 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7200 | |
7201 | if (r_symndx >= symtab_hdr->sh_info) | |
7202 | { | |
7203 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7204 | struct elf_link_hash_entry *h; | |
7205 | ||
7206 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7207 | h = elf_follow_link (h); |
411e1bfb AM |
7208 | |
7209 | if (hp != NULL) | |
7210 | *hp = h; | |
7211 | ||
7212 | if (symp != NULL) | |
7213 | *symp = NULL; | |
7214 | ||
7215 | if (symsecp != NULL) | |
7216 | { | |
7217 | asection *symsec = NULL; | |
7218 | if (h->root.type == bfd_link_hash_defined | |
7219 | || h->root.type == bfd_link_hash_defweak) | |
7220 | symsec = h->root.u.def.section; | |
7221 | *symsecp = symsec; | |
7222 | } | |
7223 | ||
e7b938ca | 7224 | if (tls_maskp != NULL) |
411e1bfb AM |
7225 | { |
7226 | struct ppc_link_hash_entry *eh; | |
7227 | ||
7228 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7229 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7230 | } |
7231 | } | |
7232 | else | |
7233 | { | |
7234 | Elf_Internal_Sym *sym; | |
7235 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7236 | ||
7237 | if (locsyms == NULL) | |
7238 | { | |
7239 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7240 | if (locsyms == NULL) | |
7241 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7242 | symtab_hdr->sh_info, | |
7243 | 0, NULL, NULL, NULL); | |
7244 | if (locsyms == NULL) | |
7245 | return FALSE; | |
7246 | *locsymsp = locsyms; | |
7247 | } | |
7248 | sym = locsyms + r_symndx; | |
7249 | ||
7250 | if (hp != NULL) | |
7251 | *hp = NULL; | |
7252 | ||
7253 | if (symp != NULL) | |
7254 | *symp = sym; | |
7255 | ||
7256 | if (symsecp != NULL) | |
cb33740c | 7257 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7258 | |
e7b938ca | 7259 | if (tls_maskp != NULL) |
411e1bfb AM |
7260 | { |
7261 | struct got_entry **lgot_ents; | |
f961d9dd | 7262 | unsigned char *tls_mask; |
411e1bfb | 7263 | |
e7b938ca | 7264 | tls_mask = NULL; |
411e1bfb AM |
7265 | lgot_ents = elf_local_got_ents (ibfd); |
7266 | if (lgot_ents != NULL) | |
7267 | { | |
e054468f AM |
7268 | struct plt_entry **local_plt = (struct plt_entry **) |
7269 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7270 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7271 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7272 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7273 | } |
e7b938ca | 7274 | *tls_maskp = tls_mask; |
411e1bfb AM |
7275 | } |
7276 | } | |
7277 | return TRUE; | |
7278 | } | |
7279 | ||
e7b938ca | 7280 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7281 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7282 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7283 | |
7284 | static int | |
f961d9dd | 7285 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7286 | unsigned long *toc_symndx, |
7287 | bfd_vma *toc_addend, | |
0d4792f7 | 7288 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7289 | const Elf_Internal_Rela *rel, |
7290 | bfd *ibfd) | |
411e1bfb AM |
7291 | { |
7292 | unsigned long r_symndx; | |
0d4792f7 | 7293 | int next_r; |
411e1bfb AM |
7294 | struct elf_link_hash_entry *h; |
7295 | Elf_Internal_Sym *sym; | |
7296 | asection *sec; | |
7297 | bfd_vma off; | |
7298 | ||
7299 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7300 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7301 | return 0; |
411e1bfb | 7302 | |
e7b938ca | 7303 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 7304 | || sec == NULL |
6bee8834 | 7305 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7306 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7307 | return 1; |
411e1bfb AM |
7308 | |
7309 | /* Look inside a TOC section too. */ | |
7310 | if (h != NULL) | |
7311 | { | |
7312 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7313 | off = h->root.u.def.value; | |
7314 | } | |
7315 | else | |
7316 | off = sym->st_value; | |
7317 | off += rel->r_addend; | |
7318 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7319 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7320 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7321 | if (toc_symndx != NULL) |
7322 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7323 | if (toc_addend != NULL) |
7324 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7325 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7326 | return 0; | |
854b41e7 | 7327 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7328 | && (next_r == -1 || next_r == -2)) |
7329 | return 1 - next_r; | |
951fd09b | 7330 | return 1; |
411e1bfb AM |
7331 | } |
7332 | ||
3b421ab3 AM |
7333 | /* Find (or create) an entry in the tocsave hash table. */ |
7334 | ||
7335 | static struct tocsave_entry * | |
7336 | tocsave_find (struct ppc_link_hash_table *htab, | |
7337 | enum insert_option insert, | |
7338 | Elf_Internal_Sym **local_syms, | |
7339 | const Elf_Internal_Rela *irela, | |
7340 | bfd *ibfd) | |
7341 | { | |
7342 | unsigned long r_indx; | |
7343 | struct elf_link_hash_entry *h; | |
7344 | Elf_Internal_Sym *sym; | |
7345 | struct tocsave_entry ent, *p; | |
7346 | hashval_t hash; | |
7347 | struct tocsave_entry **slot; | |
7348 | ||
7349 | r_indx = ELF64_R_SYM (irela->r_info); | |
7350 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7351 | return NULL; | |
7352 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7353 | { | |
7354 | (*_bfd_error_handler) | |
7355 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
7356 | return NULL; | |
7357 | } | |
7358 | ||
7359 | if (h != NULL) | |
7360 | ent.offset = h->root.u.def.value; | |
7361 | else | |
7362 | ent.offset = sym->st_value; | |
7363 | ent.offset += irela->r_addend; | |
7364 | ||
7365 | hash = tocsave_htab_hash (&ent); | |
7366 | slot = ((struct tocsave_entry **) | |
7367 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7368 | if (slot == NULL) | |
7369 | return NULL; | |
7370 | ||
7371 | if (*slot == NULL) | |
7372 | { | |
7373 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7374 | if (p == NULL) | |
7375 | return NULL; | |
7376 | *p = ent; | |
7377 | *slot = p; | |
7378 | } | |
7379 | return *slot; | |
7380 | } | |
7381 | ||
754021d0 | 7382 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7383 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7384 | |
7385 | static bfd_boolean | |
7386 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7387 | { | |
7388 | struct ppc_link_hash_entry *eh; | |
7389 | asection *sym_sec; | |
74f0fb50 | 7390 | struct _opd_sec_data *opd; |
754021d0 AM |
7391 | |
7392 | if (h->root.type == bfd_link_hash_indirect) | |
7393 | return TRUE; | |
7394 | ||
754021d0 AM |
7395 | if (h->root.type != bfd_link_hash_defined |
7396 | && h->root.type != bfd_link_hash_defweak) | |
7397 | return TRUE; | |
7398 | ||
7399 | eh = (struct ppc_link_hash_entry *) h; | |
7400 | if (eh->adjust_done) | |
7401 | return TRUE; | |
7402 | ||
7403 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7404 | opd = get_opd_info (sym_sec); |
7405 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7406 | { |
74f0fb50 | 7407 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
7408 | if (adjust == -1) |
7409 | { | |
7410 | /* This entry has been deleted. */ | |
b3fac117 | 7411 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7412 | if (dsec == NULL) |
7413 | { | |
7414 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7415 | if (discarded_section (dsec)) |
81688140 | 7416 | { |
b3fac117 | 7417 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7418 | break; |
7419 | } | |
7420 | } | |
4025353c | 7421 | eh->elf.root.u.def.value = 0; |
81688140 | 7422 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7423 | } |
7424 | else | |
7425 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7426 | eh->adjust_done = 1; |
7427 | } | |
7428 | return TRUE; | |
7429 | } | |
7430 | ||
8c1d1bb8 | 7431 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7432 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7433 | have already been determined. */ |
7434 | ||
7435 | static bfd_boolean | |
7436 | dec_dynrel_count (bfd_vma r_info, | |
7437 | asection *sec, | |
7438 | struct bfd_link_info *info, | |
7439 | Elf_Internal_Sym **local_syms, | |
7440 | struct elf_link_hash_entry *h, | |
19e08130 | 7441 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7442 | { |
7443 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7444 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7445 | |
7446 | /* Can this reloc be dynamic? This switch, and later tests here | |
7447 | should be kept in sync with the code in check_relocs. */ | |
7448 | r_type = ELF64_R_TYPE (r_info); | |
7449 | switch (r_type) | |
7450 | { | |
7451 | default: | |
7452 | return TRUE; | |
7453 | ||
7454 | case R_PPC64_TPREL16: | |
7455 | case R_PPC64_TPREL16_LO: | |
7456 | case R_PPC64_TPREL16_HI: | |
7457 | case R_PPC64_TPREL16_HA: | |
7458 | case R_PPC64_TPREL16_DS: | |
7459 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7460 | case R_PPC64_TPREL16_HIGH: |
7461 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7462 | case R_PPC64_TPREL16_HIGHER: |
7463 | case R_PPC64_TPREL16_HIGHERA: | |
7464 | case R_PPC64_TPREL16_HIGHEST: | |
7465 | case R_PPC64_TPREL16_HIGHESTA: | |
7466 | if (!info->shared) | |
7467 | return TRUE; | |
7468 | ||
7469 | case R_PPC64_TPREL64: | |
7470 | case R_PPC64_DTPMOD64: | |
7471 | case R_PPC64_DTPREL64: | |
7472 | case R_PPC64_ADDR64: | |
7473 | case R_PPC64_REL30: | |
7474 | case R_PPC64_REL32: | |
7475 | case R_PPC64_REL64: | |
7476 | case R_PPC64_ADDR14: | |
7477 | case R_PPC64_ADDR14_BRNTAKEN: | |
7478 | case R_PPC64_ADDR14_BRTAKEN: | |
7479 | case R_PPC64_ADDR16: | |
7480 | case R_PPC64_ADDR16_DS: | |
7481 | case R_PPC64_ADDR16_HA: | |
7482 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7483 | case R_PPC64_ADDR16_HIGH: |
7484 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7485 | case R_PPC64_ADDR16_HIGHER: |
7486 | case R_PPC64_ADDR16_HIGHERA: | |
7487 | case R_PPC64_ADDR16_HIGHEST: | |
7488 | case R_PPC64_ADDR16_HIGHESTA: | |
7489 | case R_PPC64_ADDR16_LO: | |
7490 | case R_PPC64_ADDR16_LO_DS: | |
7491 | case R_PPC64_ADDR24: | |
7492 | case R_PPC64_ADDR32: | |
7493 | case R_PPC64_UADDR16: | |
7494 | case R_PPC64_UADDR32: | |
7495 | case R_PPC64_UADDR64: | |
7496 | case R_PPC64_TOC: | |
7497 | break; | |
7498 | } | |
7499 | ||
7500 | if (local_syms != NULL) | |
7501 | { | |
7502 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7503 | bfd *ibfd = sec->owner; |
7504 | ||
7505 | r_symndx = ELF64_R_SYM (r_info); | |
7506 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7507 | return FALSE; | |
7508 | } | |
7509 | ||
7510 | if ((info->shared | |
1d483afe | 7511 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7512 | || (h != NULL |
198f1157 | 7513 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7514 | || h->root.type == bfd_link_hash_defweak |
7515 | || !h->def_regular)))) | |
7516 | || (ELIMINATE_COPY_RELOCS | |
7517 | && !info->shared | |
7518 | && h != NULL | |
7519 | && (h->root.type == bfd_link_hash_defweak | |
7520 | || !h->def_regular))) | |
7521 | ; | |
7522 | else | |
7523 | return TRUE; | |
7524 | ||
7525 | if (h != NULL) | |
6edfbbad | 7526 | { |
19e08130 AM |
7527 | struct elf_dyn_relocs *p; |
7528 | struct elf_dyn_relocs **pp; | |
7529 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7530 | ||
7531 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7532 | with local syms for a given section. Also, symbol flags are | |
7533 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7534 | report a dynreloc miscount. */ | |
7535 | if (*pp == NULL && info->gc_sections) | |
7536 | return TRUE; | |
7537 | ||
7538 | while ((p = *pp) != NULL) | |
60124e18 | 7539 | { |
19e08130 AM |
7540 | if (p->sec == sec) |
7541 | { | |
7542 | if (!must_be_dyn_reloc (info, r_type)) | |
7543 | p->pc_count -= 1; | |
7544 | p->count -= 1; | |
7545 | if (p->count == 0) | |
7546 | *pp = p->next; | |
7547 | return TRUE; | |
7548 | } | |
7549 | pp = &p->next; | |
60124e18 | 7550 | } |
6edfbbad | 7551 | } |
19e08130 AM |
7552 | else |
7553 | { | |
7554 | struct ppc_dyn_relocs *p; | |
7555 | struct ppc_dyn_relocs **pp; | |
7556 | void *vpp; | |
7557 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7558 | |
19e08130 AM |
7559 | if (local_syms == NULL) |
7560 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7561 | if (sym_sec == NULL) | |
7562 | sym_sec = sec; | |
c57da1a7 | 7563 | |
19e08130 AM |
7564 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7565 | pp = (struct ppc_dyn_relocs **) vpp; | |
7566 | ||
7567 | if (*pp == NULL && info->gc_sections) | |
7568 | return TRUE; | |
7569 | ||
7570 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7571 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7572 | { |
19e08130 AM |
7573 | if (p->sec == sec && p->ifunc == is_ifunc) |
7574 | { | |
7575 | p->count -= 1; | |
7576 | if (p->count == 0) | |
7577 | *pp = p->next; | |
7578 | return TRUE; | |
7579 | } | |
7580 | pp = &p->next; | |
8c1d1bb8 | 7581 | } |
8c1d1bb8 AM |
7582 | } |
7583 | ||
8de848d8 | 7584 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 7585 | sec->owner, sec); |
8c1d1bb8 AM |
7586 | bfd_set_error (bfd_error_bad_value); |
7587 | return FALSE; | |
7588 | } | |
7589 | ||
754021d0 AM |
7590 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7591 | only remove those associated with functions in discarded link-once | |
7592 | sections, or weakly defined functions that have been overridden. It | |
7593 | would be possible to remove many more entries for statically linked | |
7594 | applications. */ | |
7595 | ||
b34976b6 | 7596 | bfd_boolean |
e7d1c40c | 7597 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7598 | { |
7599 | bfd *ibfd; | |
754021d0 | 7600 | bfd_boolean some_edited = FALSE; |
3f764659 | 7601 | asection *need_pad = NULL; |
e7d1c40c AM |
7602 | struct ppc_link_hash_table *htab; |
7603 | ||
7604 | htab = ppc_hash_table (info); | |
7605 | if (htab == NULL) | |
7606 | return FALSE; | |
1e2f5b6e | 7607 | |
c72f2fb2 | 7608 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7609 | { |
7610 | asection *sec; | |
7611 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7612 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7613 | Elf_Internal_Sym *local_syms; |
1e2f5b6e | 7614 | bfd_vma offset; |
74f0fb50 | 7615 | struct _opd_sec_data *opd; |
3f764659 JJ |
7616 | bfd_boolean need_edit, add_aux_fields; |
7617 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e | 7618 | |
854b41e7 AM |
7619 | if (!is_ppc64_elf (ibfd)) |
7620 | continue; | |
7621 | ||
1e2f5b6e | 7622 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7623 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7624 | continue; |
7625 | ||
dbaa2011 | 7626 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7627 | continue; |
7628 | ||
1e2f5b6e AM |
7629 | if (sec->output_section == bfd_abs_section_ptr) |
7630 | continue; | |
7631 | ||
7632 | /* Look through the section relocs. */ | |
7633 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7634 | continue; | |
7635 | ||
6cdc0ccc | 7636 | local_syms = NULL; |
0ffa91dd | 7637 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7638 | |
7639 | /* Read the relocations. */ | |
4ce794b7 | 7640 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7641 | info->keep_memory); |
1e2f5b6e | 7642 | if (relstart == NULL) |
b34976b6 | 7643 | return FALSE; |
1e2f5b6e AM |
7644 | |
7645 | /* First run through the relocs to check they are sane, and to | |
7646 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7647 | need_edit = FALSE; |
3f764659 | 7648 | need_pad = sec; |
1e2f5b6e AM |
7649 | offset = 0; |
7650 | relend = relstart + sec->reloc_count; | |
50bc7936 | 7651 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7652 | { |
04c9666a | 7653 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7654 | unsigned long r_symndx; |
7655 | asection *sym_sec; | |
7656 | struct elf_link_hash_entry *h; | |
7657 | Elf_Internal_Sym *sym; | |
7658 | ||
3f764659 | 7659 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7660 | only interested in the reloc pointing to a function entry |
7661 | point. */ | |
50bc7936 AM |
7662 | if (rel->r_offset != offset |
7663 | || rel + 1 >= relend | |
7664 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
7665 | { |
7666 | /* If someone messes with .opd alignment then after a | |
7667 | "ld -r" we might have padding in the middle of .opd. | |
7668 | Also, there's nothing to prevent someone putting | |
7669 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7670 | optimization for them! */ |
3f764659 | 7671 | broken_opd: |
1e2f5b6e | 7672 | (*_bfd_error_handler) |
d003868e | 7673 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 7674 | need_edit = FALSE; |
1e2f5b6e AM |
7675 | break; |
7676 | } | |
7677 | ||
50bc7936 AM |
7678 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7679 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7680 | { | |
7681 | (*_bfd_error_handler) | |
d003868e AM |
7682 | (_("%B: unexpected reloc type %u in .opd section"), |
7683 | ibfd, r_type); | |
50bc7936 AM |
7684 | need_edit = FALSE; |
7685 | break; | |
7686 | } | |
7687 | ||
1e2f5b6e | 7688 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7689 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7690 | r_symndx, ibfd)) | |
50bc7936 | 7691 | goto error_ret; |
1e2f5b6e AM |
7692 | |
7693 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7694 | { | |
411e1bfb AM |
7695 | const char *sym_name; |
7696 | if (h != NULL) | |
7697 | sym_name = h->root.root.string; | |
7698 | else | |
26c61ae5 L |
7699 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7700 | sym_sec); | |
411e1bfb | 7701 | |
1e2f5b6e | 7702 | (*_bfd_error_handler) |
d003868e AM |
7703 | (_("%B: undefined sym `%s' in .opd section"), |
7704 | ibfd, sym_name); | |
b34976b6 | 7705 | need_edit = FALSE; |
1e2f5b6e AM |
7706 | break; |
7707 | } | |
7708 | ||
51020317 AM |
7709 | /* opd entries are always for functions defined in the |
7710 | current input bfd. If the symbol isn't defined in the | |
7711 | input bfd, then we won't be using the function in this | |
7712 | bfd; It must be defined in a linkonce section in another | |
7713 | bfd, or is weak. It's also possible that we are | |
7714 | discarding the function due to a linker script /DISCARD/, | |
7715 | which we test for via the output_section. */ | |
7716 | if (sym_sec->owner != ibfd | |
7717 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7718 | need_edit = TRUE; |
1e2f5b6e | 7719 | |
50bc7936 | 7720 | rel += 2; |
3f764659 JJ |
7721 | if (rel == relend |
7722 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7723 | { | |
7724 | if (sec->size == offset + 24) | |
7725 | { | |
7726 | need_pad = NULL; | |
7727 | break; | |
7728 | } | |
7729 | if (rel == relend && sec->size == offset + 16) | |
7730 | { | |
7731 | cnt_16b++; | |
7732 | break; | |
7733 | } | |
7734 | goto broken_opd; | |
7735 | } | |
7736 | ||
7737 | if (rel->r_offset == offset + 24) | |
7738 | offset += 24; | |
7739 | else if (rel->r_offset != offset + 16) | |
7740 | goto broken_opd; | |
7741 | else if (rel + 1 < relend | |
7742 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7743 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7744 | { | |
7745 | offset += 16; | |
7746 | cnt_16b++; | |
7747 | } | |
7748 | else if (rel + 2 < relend | |
7749 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7750 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7751 | { | |
7752 | offset += 24; | |
7753 | rel += 1; | |
7754 | } | |
7755 | else | |
7756 | goto broken_opd; | |
1e2f5b6e AM |
7757 | } |
7758 | ||
e7d1c40c | 7759 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 JJ |
7760 | |
7761 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7762 | { |
7763 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7764 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7765 | bfd_byte *rptr, *wptr; |
983bddc8 | 7766 | bfd_byte *new_contents; |
b34976b6 | 7767 | bfd_boolean skip; |
3f764659 | 7768 | long opd_ent_size; |
74f0fb50 AM |
7769 | bfd_size_type amt; |
7770 | ||
983bddc8 | 7771 | new_contents = NULL; |
74f0fb50 AM |
7772 | amt = sec->size * sizeof (long) / 8; |
7773 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7774 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7775 | if (opd->adjust == NULL) |
7776 | return FALSE; | |
7777 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7778 | |
7779 | /* This seems a waste of time as input .opd sections are all | |
7780 | zeros as generated by gcc, but I suppose there's no reason | |
7781 | this will always be so. We might start putting something in | |
7782 | the third word of .opd entries. */ | |
7783 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7784 | { | |
eea6121a AM |
7785 | bfd_byte *loc; |
7786 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7787 | { |
eea6121a AM |
7788 | if (loc != NULL) |
7789 | free (loc); | |
50bc7936 | 7790 | error_ret: |
6cdc0ccc AM |
7791 | if (local_syms != NULL |
7792 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7793 | free (local_syms); | |
6cdc0ccc AM |
7794 | if (elf_section_data (sec)->relocs != relstart) |
7795 | free (relstart); | |
b34976b6 | 7796 | return FALSE; |
6cdc0ccc | 7797 | } |
1e2f5b6e AM |
7798 | sec->contents = loc; |
7799 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7800 | } | |
7801 | ||
7802 | elf_section_data (sec)->relocs = relstart; | |
7803 | ||
3f764659 | 7804 | new_contents = sec->contents; |
3f764659 JJ |
7805 | if (add_aux_fields) |
7806 | { | |
7807 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7808 | if (new_contents == NULL) | |
7809 | return FALSE; | |
7810 | need_pad = FALSE; | |
3f764659 | 7811 | } |
b4f4e59f AM |
7812 | wptr = new_contents; |
7813 | rptr = sec->contents; | |
3f764659 | 7814 | |
1e2f5b6e | 7815 | write_rel = relstart; |
b34976b6 | 7816 | skip = FALSE; |
1e2f5b6e | 7817 | offset = 0; |
3f764659 | 7818 | opd_ent_size = 0; |
1e2f5b6e AM |
7819 | for (rel = relstart; rel < relend; rel++) |
7820 | { | |
50bc7936 AM |
7821 | unsigned long r_symndx; |
7822 | asection *sym_sec; | |
7823 | struct elf_link_hash_entry *h; | |
7824 | Elf_Internal_Sym *sym; | |
7825 | ||
7826 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7827 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7828 | r_symndx, ibfd)) |
50bc7936 AM |
7829 | goto error_ret; |
7830 | ||
1e2f5b6e AM |
7831 | if (rel->r_offset == offset) |
7832 | { | |
50bc7936 | 7833 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7834 | |
7835 | /* See if the .opd entry is full 24 byte or | |
7836 | 16 byte (with fd_aux entry overlapped with next | |
7837 | fd_func). */ | |
7838 | opd_ent_size = 24; | |
7839 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7840 | || (rel + 3 < relend | |
7841 | && rel[2].r_offset == offset + 16 | |
7842 | && rel[3].r_offset == offset + 24 | |
7843 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7844 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7845 | opd_ent_size = 16; | |
7846 | ||
4025353c AM |
7847 | if (h != NULL |
7848 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7849 | { |
e7d1c40c | 7850 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); |
c4f68ce3 AM |
7851 | if (fdh != NULL |
7852 | && fdh->elf.root.type != bfd_link_hash_defined | |
7853 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7854 | fdh = NULL; | |
7855 | } | |
1e2f5b6e | 7856 | |
51020317 AM |
7857 | skip = (sym_sec->owner != ibfd |
7858 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7859 | if (skip) |
7860 | { | |
4025353c | 7861 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7862 | { |
7863 | /* Arrange for the function descriptor sym | |
7864 | to be dropped. */ | |
d6fe2dc1 AM |
7865 | fdh->elf.root.u.def.value = 0; |
7866 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7867 | } |
74f0fb50 | 7868 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7869 | } |
7870 | else | |
1e2f5b6e AM |
7871 | { |
7872 | /* We'll be keeping this opd entry. */ | |
7873 | ||
4025353c | 7874 | if (fdh != NULL) |
1e2f5b6e | 7875 | { |
754021d0 AM |
7876 | /* Redefine the function descriptor symbol to |
7877 | this location in the opd section. It is | |
7878 | necessary to update the value here rather | |
7879 | than using an array of adjustments as we do | |
7880 | for local symbols, because various places | |
7881 | in the generic ELF code use the value | |
7882 | stored in u.def.value. */ | |
3f764659 | 7883 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7884 | fdh->adjust_done = 1; |
1e2f5b6e | 7885 | } |
754021d0 AM |
7886 | |
7887 | /* Local syms are a bit tricky. We could | |
7888 | tweak them as they can be cached, but | |
7889 | we'd need to look through the local syms | |
7890 | for the function descriptor sym which we | |
7891 | don't have at the moment. So keep an | |
7892 | array of adjustments. */ | |
74f0fb50 | 7893 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7894 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7895 | |
7896 | if (wptr != rptr) | |
3f764659 JJ |
7897 | memcpy (wptr, rptr, opd_ent_size); |
7898 | wptr += opd_ent_size; | |
7899 | if (add_aux_fields && opd_ent_size == 16) | |
7900 | { | |
7901 | memset (wptr, '\0', 8); | |
7902 | wptr += 8; | |
7903 | } | |
1e2f5b6e | 7904 | } |
3f764659 JJ |
7905 | rptr += opd_ent_size; |
7906 | offset += opd_ent_size; | |
1e2f5b6e AM |
7907 | } |
7908 | ||
50bc7936 AM |
7909 | if (skip) |
7910 | { | |
60124e18 AM |
7911 | if (!NO_OPD_RELOCS |
7912 | && !info->relocatable | |
18d944df | 7913 | && !dec_dynrel_count (rel->r_info, sec, info, |
19e08130 | 7914 | NULL, h, sym)) |
8c1d1bb8 | 7915 | goto error_ret; |
50bc7936 AM |
7916 | } |
7917 | else | |
1e2f5b6e | 7918 | { |
50bc7936 AM |
7919 | /* We need to adjust any reloc offsets to point to the |
7920 | new opd entries. While we're at it, we may as well | |
7921 | remove redundant relocs. */ | |
74f0fb50 | 7922 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7923 | if (write_rel != rel) |
7924 | memcpy (write_rel, rel, sizeof (*rel)); | |
7925 | ++write_rel; | |
7926 | } | |
7927 | } | |
7928 | ||
3f764659 | 7929 | sec->size = wptr - new_contents; |
1e2f5b6e | 7930 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7931 | if (add_aux_fields) |
7932 | { | |
7933 | free (sec->contents); | |
7934 | sec->contents = new_contents; | |
7935 | } | |
7936 | ||
05bf9422 | 7937 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7938 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7939 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7940 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7941 | some_edited = TRUE; |
1e2f5b6e | 7942 | } |
6cdc0ccc | 7943 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7944 | free (relstart); |
6cdc0ccc | 7945 | |
411e1bfb AM |
7946 | if (local_syms != NULL |
7947 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7948 | { | |
7949 | if (!info->keep_memory) | |
7950 | free (local_syms); | |
7951 | else | |
7952 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7953 | } | |
7954 | } | |
7955 | ||
754021d0 AM |
7956 | if (some_edited) |
7957 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7958 | ||
3f764659 JJ |
7959 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7960 | long, add a 8 byte padding after it. */ | |
7961 | if (need_pad != NULL && !info->relocatable) | |
7962 | { | |
7963 | bfd_byte *p; | |
7964 | ||
7965 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7966 | { | |
7967 | BFD_ASSERT (need_pad->size > 0); | |
7968 | ||
7969 | p = bfd_malloc (need_pad->size + 8); | |
7970 | if (p == NULL) | |
7971 | return FALSE; | |
699733f6 | 7972 | |
3f764659 JJ |
7973 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7974 | p, 0, need_pad->size)) | |
7975 | return FALSE; | |
7976 | ||
7977 | need_pad->contents = p; | |
7978 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7979 | } | |
7980 | else | |
7981 | { | |
7982 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7983 | if (p == NULL) | |
7984 | return FALSE; | |
7985 | ||
7986 | need_pad->contents = p; | |
7987 | } | |
7988 | ||
7989 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7990 | need_pad->size += 8; | |
7991 | } | |
7992 | ||
411e1bfb AM |
7993 | return TRUE; |
7994 | } | |
7995 | ||
e1918d23 | 7996 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7997 | |
e1918d23 | 7998 | asection * |
e7d1c40c | 7999 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8000 | { |
411e1bfb AM |
8001 | struct ppc_link_hash_table *htab; |
8002 | ||
411e1bfb | 8003 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8004 | if (htab == NULL) |
8005 | return NULL; | |
8006 | ||
ee67d69a AM |
8007 | if (abiversion (info->output_bfd) == 1) |
8008 | htab->opd_abi = 1; | |
8009 | ||
e7d1c40c | 8010 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8011 | htab->do_multi_toc = 0; |
8012 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8013 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8014 | |
3a71aa26 AM |
8015 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8016 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8017 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8018 | /* Move dynamic linking info to the function descriptor sym. */ |
8019 | if (htab->tls_get_addr != NULL) | |
8020 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8021 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8022 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8023 | FALSE, FALSE, TRUE)); | |
e7d1c40c | 8024 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
8025 | { |
8026 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8027 | ||
8028 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8029 | FALSE, FALSE, TRUE); | |
8030 | if (opt != NULL) | |
8031 | func_desc_adjust (opt, info); | |
8032 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8033 | FALSE, FALSE, TRUE); | |
8034 | if (opt_fd != NULL | |
8035 | && (opt_fd->root.type == bfd_link_hash_defined | |
8036 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8037 | { | |
8038 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8039 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8040 | be calling __tls_get_addr via a plt call stub, then | |
8041 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8042 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8043 | if (htab->elf.dynamic_sections_created | |
8044 | && tga_fd != NULL | |
8045 | && (tga_fd->type == STT_FUNC | |
8046 | || tga_fd->needs_plt) | |
8047 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
8048 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
8049 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
8050 | { | |
8051 | struct plt_entry *ent; | |
8052 | ||
8053 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8054 | if (ent->plt.refcount > 0) | |
8055 | break; | |
8056 | if (ent != NULL) | |
8057 | { | |
8058 | tga_fd->root.type = bfd_link_hash_indirect; | |
8059 | tga_fd->root.u.i.link = &opt_fd->root; | |
8060 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
8061 | if (opt_fd->dynindx != -1) | |
8062 | { | |
8063 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8064 | opt_fd->dynindx = -1; | |
8065 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8066 | opt_fd->dynstr_index); | |
8067 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8068 | return NULL; |
a7f2871e AM |
8069 | } |
8070 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8071 | tga = &htab->tls_get_addr->elf; | |
8072 | if (opt != NULL && tga != NULL) | |
8073 | { | |
8074 | tga->root.type = bfd_link_hash_indirect; | |
8075 | tga->root.u.i.link = &opt->root; | |
8076 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
8077 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
8078 | tga->forced_local); | |
8079 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8080 | } | |
8081 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8082 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8083 | if (htab->tls_get_addr != NULL) | |
8084 | { | |
8085 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8086 | htab->tls_get_addr->is_func = 1; | |
8087 | } | |
8088 | } | |
8089 | } | |
8090 | } | |
8091 | else | |
e7d1c40c | 8092 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 8093 | } |
33c0ec9d | 8094 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8095 | } |
8387904d | 8096 | |
3a71aa26 AM |
8097 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8098 | HASH1 or HASH2. */ | |
8387904d | 8099 | |
3a71aa26 AM |
8100 | static bfd_boolean |
8101 | branch_reloc_hash_match (const bfd *ibfd, | |
8102 | const Elf_Internal_Rela *rel, | |
8103 | const struct ppc_link_hash_entry *hash1, | |
8104 | const struct ppc_link_hash_entry *hash2) | |
8105 | { | |
8106 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8107 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8108 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8109 | ||
e054468f | 8110 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8111 | { |
3a71aa26 AM |
8112 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8113 | struct elf_link_hash_entry *h; | |
8387904d | 8114 | |
3a71aa26 | 8115 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8116 | h = elf_follow_link (h); |
3a71aa26 AM |
8117 | if (h == &hash1->elf || h == &hash2->elf) |
8118 | return TRUE; | |
a48ebf4d | 8119 | } |
3a71aa26 | 8120 | return FALSE; |
951fd09b | 8121 | } |
411e1bfb | 8122 | |
951fd09b AM |
8123 | /* Run through all the TLS relocs looking for optimization |
8124 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8125 | a preliminary section layout so that we know the TLS segment | |
8126 | offsets. We can't optimize earlier because some optimizations need | |
8127 | to know the tp offset, and we need to optimize before allocating | |
8128 | dynamic relocations. */ | |
8129 | ||
8130 | bfd_boolean | |
33c0ec9d | 8131 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8132 | { |
8133 | bfd *ibfd; | |
8134 | asection *sec; | |
8135 | struct ppc_link_hash_table *htab; | |
663a1470 | 8136 | unsigned char *toc_ref; |
102890f0 | 8137 | int pass; |
951fd09b | 8138 | |
1d483afe | 8139 | if (info->relocatable || !info->executable) |
411e1bfb AM |
8140 | return TRUE; |
8141 | ||
951fd09b | 8142 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8143 | if (htab == NULL) |
8144 | return FALSE; | |
8145 | ||
663a1470 AM |
8146 | /* Make two passes over the relocs. On the first pass, mark toc |
8147 | entries involved with tls relocs, and check that tls relocs | |
8148 | involved in setting up a tls_get_addr call are indeed followed by | |
8149 | such a call. If they are not, we can't do any tls optimization. | |
8150 | On the second pass twiddle tls_mask flags to notify | |
8151 | relocate_section that optimization can be done, and adjust got | |
8152 | and plt refcounts. */ | |
8153 | toc_ref = NULL; | |
8154 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8155 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8156 | { |
8157 | Elf_Internal_Sym *locsyms = NULL; | |
8158 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8159 | ||
102890f0 AM |
8160 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8161 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8162 | { | |
8163 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8164 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8165 | |
102890f0 AM |
8166 | /* Read the relocations. */ |
8167 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8168 | info->keep_memory); | |
8169 | if (relstart == NULL) | |
2915c55b JK |
8170 | { |
8171 | free (toc_ref); | |
8172 | return FALSE; | |
8173 | } | |
411e1bfb | 8174 | |
102890f0 AM |
8175 | relend = relstart + sec->reloc_count; |
8176 | for (rel = relstart; rel < relend; rel++) | |
8177 | { | |
8178 | enum elf_ppc64_reloc_type r_type; | |
8179 | unsigned long r_symndx; | |
8180 | struct elf_link_hash_entry *h; | |
8181 | Elf_Internal_Sym *sym; | |
8182 | asection *sym_sec; | |
f961d9dd AM |
8183 | unsigned char *tls_mask; |
8184 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8185 | bfd_vma value; |
8186 | bfd_boolean ok_tprel, is_local; | |
8187 | long toc_ref_index = 0; | |
8188 | int expecting_tls_get_addr = 0; | |
663a1470 | 8189 | bfd_boolean ret = FALSE; |
411e1bfb | 8190 | |
102890f0 AM |
8191 | r_symndx = ELF64_R_SYM (rel->r_info); |
8192 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8193 | r_symndx, ibfd)) | |
8194 | { | |
8195 | err_free_rel: | |
8196 | if (elf_section_data (sec)->relocs != relstart) | |
8197 | free (relstart); | |
8198 | if (toc_ref != NULL) | |
8199 | free (toc_ref); | |
8200 | if (locsyms != NULL | |
0ffa91dd | 8201 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8202 | != (unsigned char *) locsyms)) |
8203 | free (locsyms); | |
663a1470 | 8204 | return ret; |
102890f0 | 8205 | } |
411e1bfb | 8206 | |
102890f0 AM |
8207 | if (h != NULL) |
8208 | { | |
766bc656 AM |
8209 | if (h->root.type == bfd_link_hash_defined |
8210 | || h->root.type == bfd_link_hash_defweak) | |
8211 | value = h->root.u.def.value; | |
8212 | else if (h->root.type == bfd_link_hash_undefweak) | |
8213 | value = 0; | |
8214 | else | |
663a1470 AM |
8215 | { |
8216 | found_tls_get_addr_arg = 0; | |
8217 | continue; | |
8218 | } | |
102890f0 AM |
8219 | } |
8220 | else | |
8221 | /* Symbols referenced by TLS relocs must be of type | |
8222 | STT_TLS. So no need for .opd local sym adjust. */ | |
8223 | value = sym->st_value; | |
8224 | ||
8225 | ok_tprel = FALSE; | |
8226 | is_local = FALSE; | |
8227 | if (h == NULL | |
8228 | || !h->def_dynamic) | |
8229 | { | |
8230 | is_local = TRUE; | |
766bc656 AM |
8231 | if (h != NULL |
8232 | && h->root.type == bfd_link_hash_undefweak) | |
8233 | ok_tprel = TRUE; | |
8234 | else | |
8235 | { | |
8236 | value += sym_sec->output_offset; | |
8237 | value += sym_sec->output_section->vma; | |
8238 | value -= htab->elf.tls_sec->vma; | |
8239 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8240 | < (bfd_vma) 1 << 32); | |
8241 | } | |
102890f0 | 8242 | } |
951fd09b | 8243 | |
102890f0 | 8244 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8245 | /* If this section has old-style __tls_get_addr calls |
8246 | without marker relocs, then check that each | |
8247 | __tls_get_addr call reloc is preceded by a reloc | |
8248 | that conceivably belongs to the __tls_get_addr arg | |
8249 | setup insn. If we don't find matching arg setup | |
8250 | relocs, don't do any tls optimization. */ | |
8251 | if (pass == 0 | |
8252 | && sec->has_tls_get_addr_call | |
8253 | && h != NULL | |
8254 | && (h == &htab->tls_get_addr->elf | |
8255 | || h == &htab->tls_get_addr_fd->elf) | |
8256 | && !found_tls_get_addr_arg | |
8257 | && is_branch_reloc (r_type)) | |
8258 | { | |
25f53a85 | 8259 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8260 | "TLS optimization disabled\n"), |
8261 | ibfd, sec, rel->r_offset); | |
8262 | ret = TRUE; | |
8263 | goto err_free_rel; | |
8264 | } | |
8265 | ||
8266 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8267 | switch (r_type) |
8268 | { | |
8269 | case R_PPC64_GOT_TLSLD16: | |
8270 | case R_PPC64_GOT_TLSLD16_LO: | |
8271 | expecting_tls_get_addr = 1; | |
663a1470 | 8272 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8273 | /* Fall thru */ |
8274 | ||
8275 | case R_PPC64_GOT_TLSLD16_HI: | |
8276 | case R_PPC64_GOT_TLSLD16_HA: | |
8277 | /* These relocs should never be against a symbol | |
8278 | defined in a shared lib. Leave them alone if | |
8279 | that turns out to be the case. */ | |
8280 | if (!is_local) | |
8281 | continue; | |
411e1bfb | 8282 | |
102890f0 | 8283 | /* LD -> LE */ |
411e1bfb | 8284 | tls_set = 0; |
102890f0 AM |
8285 | tls_clear = TLS_LD; |
8286 | tls_type = TLS_TLS | TLS_LD; | |
8287 | break; | |
411e1bfb | 8288 | |
102890f0 AM |
8289 | case R_PPC64_GOT_TLSGD16: |
8290 | case R_PPC64_GOT_TLSGD16_LO: | |
8291 | expecting_tls_get_addr = 1; | |
663a1470 | 8292 | found_tls_get_addr_arg = 1; |
102890f0 AM |
8293 | /* Fall thru */ |
8294 | ||
8295 | case R_PPC64_GOT_TLSGD16_HI: | |
8296 | case R_PPC64_GOT_TLSGD16_HA: | |
8297 | if (ok_tprel) | |
8298 | /* GD -> LE */ | |
411e1bfb | 8299 | tls_set = 0; |
102890f0 AM |
8300 | else |
8301 | /* GD -> IE */ | |
8302 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8303 | tls_clear = TLS_GD; | |
8304 | tls_type = TLS_TLS | TLS_GD; | |
8305 | break; | |
8306 | ||
8307 | case R_PPC64_GOT_TPREL16_DS: | |
8308 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8309 | case R_PPC64_GOT_TPREL16_HI: | |
8310 | case R_PPC64_GOT_TPREL16_HA: | |
8311 | if (ok_tprel) | |
8312 | { | |
8313 | /* IE -> LE */ | |
8314 | tls_set = 0; | |
8315 | tls_clear = TLS_TPREL; | |
8316 | tls_type = TLS_TLS | TLS_TPREL; | |
8317 | break; | |
8318 | } | |
411e1bfb AM |
8319 | continue; |
8320 | ||
727fc41e AM |
8321 | case R_PPC64_TLSGD: |
8322 | case R_PPC64_TLSLD: | |
663a1470 AM |
8323 | found_tls_get_addr_arg = 1; |
8324 | /* Fall thru */ | |
8325 | ||
8326 | case R_PPC64_TLS: | |
8327 | case R_PPC64_TOC16: | |
8328 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8329 | if (sym_sec == NULL || sym_sec != toc) |
8330 | continue; | |
8331 | ||
8332 | /* Mark this toc entry as referenced by a TLS | |
8333 | code sequence. We can do that now in the | |
8334 | case of R_PPC64_TLS, and after checking for | |
8335 | tls_get_addr for the TOC16 relocs. */ | |
8336 | if (toc_ref == NULL) | |
663a1470 AM |
8337 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8338 | if (toc_ref == NULL) | |
8339 | goto err_free_rel; | |
8340 | ||
102890f0 AM |
8341 | if (h != NULL) |
8342 | value = h->root.u.def.value; | |
8343 | else | |
8344 | value = sym->st_value; | |
8345 | value += rel->r_addend; | |
73242275 AM |
8346 | if (value % 8 != 0) |
8347 | continue; | |
8348 | BFD_ASSERT (value < toc->size | |
8349 | && toc->output_offset % 8 == 0); | |
663a1470 | 8350 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8351 | if (r_type == R_PPC64_TLS |
8352 | || r_type == R_PPC64_TLSGD | |
8353 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8354 | { |
8355 | toc_ref[toc_ref_index] = 1; | |
8356 | continue; | |
8357 | } | |
8358 | ||
8359 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8360 | continue; | |
8361 | ||
8362 | tls_set = 0; | |
8363 | tls_clear = 0; | |
8364 | expecting_tls_get_addr = 2; | |
8365 | break; | |
8366 | ||
8367 | case R_PPC64_TPREL64: | |
8368 | if (pass == 0 | |
8369 | || sec != toc | |
8370 | || toc_ref == NULL | |
663a1470 | 8371 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8372 | continue; |
8373 | if (ok_tprel) | |
8374 | { | |
8375 | /* IE -> LE */ | |
8376 | tls_set = TLS_EXPLICIT; | |
8377 | tls_clear = TLS_TPREL; | |
8378 | break; | |
8379 | } | |
8380 | continue; | |
8381 | ||
8382 | case R_PPC64_DTPMOD64: | |
8383 | if (pass == 0 | |
8384 | || sec != toc | |
8385 | || toc_ref == NULL | |
663a1470 | 8386 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8387 | continue; |
8388 | if (rel + 1 < relend | |
8389 | && (rel[1].r_info | |
8390 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8391 | && rel[1].r_offset == rel->r_offset + 8) | |
8392 | { | |
8393 | if (ok_tprel) | |
8394 | /* GD -> LE */ | |
8395 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8396 | else | |
8397 | /* GD -> IE */ | |
8398 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8399 | tls_clear = TLS_GD; | |
8400 | } | |
8401 | else | |
8402 | { | |
8403 | if (!is_local) | |
8404 | continue; | |
8405 | ||
8406 | /* LD -> LE */ | |
8407 | tls_set = TLS_EXPLICIT; | |
8408 | tls_clear = TLS_LD; | |
8409 | } | |
8410 | break; | |
8411 | ||
8412 | default: | |
8413 | continue; | |
8414 | } | |
8415 | ||
8416 | if (pass == 0) | |
8417 | { | |
727fc41e AM |
8418 | if (!expecting_tls_get_addr |
8419 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8420 | continue; |
8421 | ||
3a71aa26 AM |
8422 | if (rel + 1 < relend |
8423 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8424 | htab->tls_get_addr, | |
8425 | htab->tls_get_addr_fd)) | |
102890f0 | 8426 | { |
3a71aa26 | 8427 | if (expecting_tls_get_addr == 2) |
102890f0 | 8428 | { |
3a71aa26 | 8429 | /* Check for toc tls entries. */ |
f961d9dd | 8430 | unsigned char *toc_tls; |
3a71aa26 AM |
8431 | int retval; |
8432 | ||
8433 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8434 | &locsyms, | |
8435 | rel, ibfd); | |
8436 | if (retval == 0) | |
8437 | goto err_free_rel; | |
663a1470 AM |
8438 | if (toc_tls != NULL) |
8439 | { | |
8440 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
8441 | found_tls_get_addr_arg = 1; | |
8442 | if (retval > 1) | |
8443 | toc_ref[toc_ref_index] = 1; | |
8444 | } | |
102890f0 | 8445 | } |
3a71aa26 | 8446 | continue; |
102890f0 AM |
8447 | } |
8448 | ||
8449 | if (expecting_tls_get_addr != 1) | |
8450 | continue; | |
8451 | ||
8452 | /* Uh oh, we didn't find the expected call. We | |
8453 | could just mark this symbol to exclude it | |
8454 | from tls optimization but it's safer to skip | |
663a1470 | 8455 | the entire optimization. */ |
25f53a85 | 8456 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8457 | "TLS optimization disabled\n"), |
8458 | ibfd, sec, rel->r_offset); | |
8459 | ret = TRUE; | |
8460 | goto err_free_rel; | |
102890f0 AM |
8461 | } |
8462 | ||
85f7a9cb | 8463 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
8464 | { |
8465 | struct plt_entry *ent; | |
8466 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8467 | ent != NULL; | |
8468 | ent = ent->next) | |
8469 | if (ent->addend == 0) | |
411e1bfb | 8470 | { |
102890f0 | 8471 | if (ent->plt.refcount > 0) |
30038c59 | 8472 | { |
102890f0 AM |
8473 | ent->plt.refcount -= 1; |
8474 | expecting_tls_get_addr = 0; | |
30038c59 | 8475 | } |
102890f0 | 8476 | break; |
411e1bfb | 8477 | } |
102890f0 | 8478 | } |
411e1bfb | 8479 | |
85f7a9cb | 8480 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
8481 | { |
8482 | struct plt_entry *ent; | |
8483 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8484 | ent != NULL; | |
8485 | ent = ent->next) | |
8486 | if (ent->addend == 0) | |
411e1bfb | 8487 | { |
102890f0 AM |
8488 | if (ent->plt.refcount > 0) |
8489 | ent->plt.refcount -= 1; | |
8490 | break; | |
411e1bfb | 8491 | } |
102890f0 | 8492 | } |
411e1bfb | 8493 | |
102890f0 | 8494 | if (tls_clear == 0) |
30038c59 AM |
8495 | continue; |
8496 | ||
102890f0 AM |
8497 | if ((tls_set & TLS_EXPLICIT) == 0) |
8498 | { | |
8499 | struct got_entry *ent; | |
411e1bfb | 8500 | |
102890f0 AM |
8501 | /* Adjust got entry for this reloc. */ |
8502 | if (h != NULL) | |
8503 | ent = h->got.glist; | |
8504 | else | |
8505 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8506 | |
102890f0 AM |
8507 | for (; ent != NULL; ent = ent->next) |
8508 | if (ent->addend == rel->r_addend | |
8509 | && ent->owner == ibfd | |
8510 | && ent->tls_type == tls_type) | |
8511 | break; | |
8512 | if (ent == NULL) | |
8513 | abort (); | |
411e1bfb | 8514 | |
102890f0 AM |
8515 | if (tls_set == 0) |
8516 | { | |
8517 | /* We managed to get rid of a got entry. */ | |
8518 | if (ent->got.refcount > 0) | |
8519 | ent->got.refcount -= 1; | |
8520 | } | |
8521 | } | |
8522 | else | |
8523 | { | |
8524 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8525 | we'll lose one or two dyn relocs. */ | |
8526 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8527 | NULL, h, sym)) |
102890f0 | 8528 | return FALSE; |
411e1bfb | 8529 | |
102890f0 AM |
8530 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8531 | { | |
8532 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8533 | NULL, h, sym)) |
102890f0 AM |
8534 | return FALSE; |
8535 | } | |
8536 | } | |
411e1bfb | 8537 | |
102890f0 AM |
8538 | *tls_mask |= tls_set; |
8539 | *tls_mask &= ~tls_clear; | |
8540 | } | |
8c1d1bb8 | 8541 | |
102890f0 AM |
8542 | if (elf_section_data (sec)->relocs != relstart) |
8543 | free (relstart); | |
8544 | } | |
411e1bfb | 8545 | |
663a1470 AM |
8546 | if (locsyms != NULL |
8547 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8548 | { | |
8549 | if (!info->keep_memory) | |
8550 | free (locsyms); | |
8551 | else | |
8552 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8553 | } | |
8554 | } | |
411e1bfb | 8555 | |
663a1470 AM |
8556 | if (toc_ref != NULL) |
8557 | free (toc_ref); | |
b34976b6 | 8558 | return TRUE; |
1e2f5b6e | 8559 | } |
b34976b6 | 8560 | |
c5614fa4 AM |
8561 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8562 | the values of any global symbols in a toc section that has been | |
8563 | edited. Globals in toc sections should be a rarity, so this function | |
8564 | sets a flag if any are found in toc sections other than the one just | |
8565 | edited, so that futher hash table traversals can be avoided. */ | |
8566 | ||
8567 | struct adjust_toc_info | |
8568 | { | |
8569 | asection *toc; | |
8570 | unsigned long *skip; | |
8571 | bfd_boolean global_toc_syms; | |
8572 | }; | |
8573 | ||
ba761f19 AM |
8574 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8575 | ||
c5614fa4 AM |
8576 | static bfd_boolean |
8577 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8578 | { | |
8579 | struct ppc_link_hash_entry *eh; | |
8580 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8581 | unsigned long i; |
c5614fa4 | 8582 | |
c5614fa4 AM |
8583 | if (h->root.type != bfd_link_hash_defined |
8584 | && h->root.type != bfd_link_hash_defweak) | |
8585 | return TRUE; | |
8586 | ||
8587 | eh = (struct ppc_link_hash_entry *) h; | |
8588 | if (eh->adjust_done) | |
8589 | return TRUE; | |
8590 | ||
8591 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8592 | { | |
854b41e7 AM |
8593 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8594 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8595 | else |
854b41e7 AM |
8596 | i = eh->elf.root.u.def.value >> 3; |
8597 | ||
ba761f19 | 8598 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8599 | { |
8600 | (*_bfd_error_handler) | |
854b41e7 AM |
8601 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8602 | do | |
8603 | ++i; | |
ba761f19 | 8604 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8605 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8606 | } |
854b41e7 AM |
8607 | |
8608 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8609 | eh->adjust_done = 1; |
8610 | } | |
8611 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8612 | toc_inf->global_toc_syms = TRUE; | |
8613 | ||
8614 | return TRUE; | |
8615 | } | |
8616 | ||
560c8763 AM |
8617 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
8618 | ||
8619 | static bfd_boolean | |
8620 | ok_lo_toc_insn (unsigned int insn) | |
8621 | { | |
8622 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8623 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8624 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8625 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8626 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8627 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8628 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8629 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8630 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8631 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8632 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8633 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8634 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8635 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8636 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8637 | && (insn & 3) != 1) | |
8638 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8639 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
8640 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
8641 | } | |
8642 | ||
c5614fa4 AM |
8643 | /* Examine all relocs referencing .toc sections in order to remove |
8644 | unused .toc entries. */ | |
8645 | ||
8646 | bfd_boolean | |
33c0ec9d | 8647 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8648 | { |
8649 | bfd *ibfd; | |
8650 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8651 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8652 | |
67f0cbdb | 8653 | htab->do_toc_opt = 1; |
c5614fa4 | 8654 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8655 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8656 | { |
8657 | asection *toc, *sec; | |
8658 | Elf_Internal_Shdr *symtab_hdr; | |
8659 | Elf_Internal_Sym *local_syms; | |
425b145b | 8660 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8661 | unsigned long *skip, *drop; |
8662 | unsigned char *used; | |
8663 | unsigned char *keep, last, some_unused; | |
8664 | ||
854b41e7 AM |
8665 | if (!is_ppc64_elf (ibfd)) |
8666 | continue; | |
8667 | ||
c5614fa4 AM |
8668 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8669 | if (toc == NULL | |
92b7a70f | 8670 | || toc->size == 0 |
dbaa2011 AM |
8671 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8672 | || discarded_section (toc)) | |
c5614fa4 AM |
8673 | continue; |
8674 | ||
425b145b | 8675 | toc_relocs = NULL; |
c5614fa4 | 8676 | local_syms = NULL; |
0ffa91dd | 8677 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8678 | |
8679 | /* Look at sections dropped from the final link. */ | |
8680 | skip = NULL; | |
8681 | relstart = NULL; | |
8682 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8683 | { | |
8684 | if (sec->reloc_count == 0 | |
dbaa2011 | 8685 | || !discarded_section (sec) |
c5614fa4 AM |
8686 | || get_opd_info (sec) |
8687 | || (sec->flags & SEC_ALLOC) == 0 | |
8688 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8689 | continue; | |
8690 | ||
8691 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8692 | if (relstart == NULL) | |
8693 | goto error_ret; | |
8694 | ||
8695 | /* Run through the relocs to see which toc entries might be | |
8696 | unused. */ | |
8697 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8698 | { | |
8699 | enum elf_ppc64_reloc_type r_type; | |
8700 | unsigned long r_symndx; | |
8701 | asection *sym_sec; | |
8702 | struct elf_link_hash_entry *h; | |
8703 | Elf_Internal_Sym *sym; | |
8704 | bfd_vma val; | |
8705 | ||
8706 | r_type = ELF64_R_TYPE (rel->r_info); | |
8707 | switch (r_type) | |
8708 | { | |
8709 | default: | |
8710 | continue; | |
8711 | ||
8712 | case R_PPC64_TOC16: | |
8713 | case R_PPC64_TOC16_LO: | |
8714 | case R_PPC64_TOC16_HI: | |
8715 | case R_PPC64_TOC16_HA: | |
8716 | case R_PPC64_TOC16_DS: | |
8717 | case R_PPC64_TOC16_LO_DS: | |
8718 | break; | |
8719 | } | |
8720 | ||
8721 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8722 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8723 | r_symndx, ibfd)) | |
8724 | goto error_ret; | |
8725 | ||
8726 | if (sym_sec != toc) | |
8727 | continue; | |
8728 | ||
8729 | if (h != NULL) | |
8730 | val = h->root.u.def.value; | |
8731 | else | |
8732 | val = sym->st_value; | |
8733 | val += rel->r_addend; | |
8734 | ||
8735 | if (val >= toc->size) | |
8736 | continue; | |
8737 | ||
8738 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8739 | If not, don't mark as unused. */ | |
8740 | if (val & 7) | |
8741 | continue; | |
8742 | ||
8743 | if (skip == NULL) | |
8744 | { | |
854b41e7 | 8745 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8746 | if (skip == NULL) |
8747 | goto error_ret; | |
8748 | } | |
8749 | ||
ba761f19 | 8750 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8751 | } |
8752 | ||
8753 | if (elf_section_data (sec)->relocs != relstart) | |
8754 | free (relstart); | |
8755 | } | |
8756 | ||
ba761f19 AM |
8757 | /* For largetoc loads of address constants, we can convert |
8758 | . addis rx,2,addr@got@ha | |
8759 | . ld ry,addr@got@l(rx) | |
8760 | to | |
8761 | . addis rx,2,addr@toc@ha | |
8762 | . addi ry,rx,addr@toc@l | |
8763 | when addr is within 2G of the toc pointer. This then means | |
8764 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8765 | |
ba761f19 AM |
8766 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8767 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8768 | && toc->reloc_count != 0) | |
8769 | { | |
8770 | /* Read toc relocs. */ | |
425b145b AM |
8771 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8772 | info->keep_memory); | |
8773 | if (toc_relocs == NULL) | |
ba761f19 AM |
8774 | goto error_ret; |
8775 | ||
425b145b | 8776 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8777 | { |
8778 | enum elf_ppc64_reloc_type r_type; | |
8779 | unsigned long r_symndx; | |
8780 | asection *sym_sec; | |
8781 | struct elf_link_hash_entry *h; | |
8782 | Elf_Internal_Sym *sym; | |
8783 | bfd_vma val, addr; | |
8784 | ||
8785 | r_type = ELF64_R_TYPE (rel->r_info); | |
8786 | if (r_type != R_PPC64_ADDR64) | |
8787 | continue; | |
8788 | ||
8789 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8790 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8791 | r_symndx, ibfd)) | |
8792 | goto error_ret; | |
8793 | ||
425b145b | 8794 | if (sym_sec == NULL |
dbaa2011 | 8795 | || discarded_section (sym_sec)) |
425b145b AM |
8796 | continue; |
8797 | ||
afe397ea | 8798 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8799 | continue; |
8800 | ||
8801 | if (h != NULL) | |
bddc25c9 AM |
8802 | { |
8803 | if (h->type == STT_GNU_IFUNC) | |
8804 | continue; | |
8805 | val = h->root.u.def.value; | |
8806 | } | |
ba761f19 | 8807 | else |
bddc25c9 AM |
8808 | { |
8809 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8810 | continue; | |
8811 | val = sym->st_value; | |
8812 | } | |
ba761f19 AM |
8813 | val += rel->r_addend; |
8814 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8815 | ||
8816 | /* We don't yet know the exact toc pointer value, but we | |
8817 | know it will be somewhere in the toc section. Don't | |
8818 | optimize if the difference from any possible toc | |
8819 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8820 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8821 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8822 | continue; | |
8823 | ||
8824 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8825 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8826 | continue; | |
8827 | ||
8828 | if (skip == NULL) | |
8829 | { | |
8830 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8831 | if (skip == NULL) | |
8832 | goto error_ret; | |
8833 | } | |
8834 | ||
8835 | skip[rel->r_offset >> 3] | |
425b145b | 8836 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8837 | } |
ba761f19 AM |
8838 | } |
8839 | ||
c5614fa4 AM |
8840 | if (skip == NULL) |
8841 | continue; | |
8842 | ||
8843 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8844 | if (used == NULL) | |
8845 | { | |
8846 | error_ret: | |
8847 | if (local_syms != NULL | |
8848 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8849 | free (local_syms); | |
8850 | if (sec != NULL | |
8851 | && relstart != NULL | |
8852 | && elf_section_data (sec)->relocs != relstart) | |
8853 | free (relstart); | |
425b145b AM |
8854 | if (toc_relocs != NULL |
8855 | && elf_section_data (toc)->relocs != toc_relocs) | |
8856 | free (toc_relocs); | |
c5614fa4 AM |
8857 | if (skip != NULL) |
8858 | free (skip); | |
8859 | return FALSE; | |
8860 | } | |
8861 | ||
30038c59 AM |
8862 | /* Now check all kept sections that might reference the toc. |
8863 | Check the toc itself last. */ | |
8864 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8865 | : ibfd->sections); | |
c5614fa4 | 8866 | sec != NULL; |
c5614fa4 | 8867 | sec = (sec == toc ? NULL |
c5614fa4 | 8868 | : sec->next == NULL ? toc |
30038c59 | 8869 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8870 | : sec->next)) |
8871 | { | |
8872 | int repeat; | |
8873 | ||
8874 | if (sec->reloc_count == 0 | |
dbaa2011 | 8875 | || discarded_section (sec) |
c5614fa4 AM |
8876 | || get_opd_info (sec) |
8877 | || (sec->flags & SEC_ALLOC) == 0 | |
8878 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8879 | continue; | |
8880 | ||
854b41e7 AM |
8881 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8882 | info->keep_memory); | |
c5614fa4 | 8883 | if (relstart == NULL) |
2915c55b JK |
8884 | { |
8885 | free (used); | |
8886 | goto error_ret; | |
8887 | } | |
c5614fa4 AM |
8888 | |
8889 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8890 | do |
d4f1ee75 AM |
8891 | { |
8892 | repeat = 0; | |
8893 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8894 | { | |
8895 | enum elf_ppc64_reloc_type r_type; | |
8896 | unsigned long r_symndx; | |
8897 | asection *sym_sec; | |
8898 | struct elf_link_hash_entry *h; | |
8899 | Elf_Internal_Sym *sym; | |
8900 | bfd_vma val; | |
8901 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 8902 | |
d4f1ee75 AM |
8903 | r_type = ELF64_R_TYPE (rel->r_info); |
8904 | switch (r_type) | |
8905 | { | |
8906 | default: | |
8907 | insn_check = no_check; | |
8908 | break; | |
98528052 | 8909 | |
d4f1ee75 AM |
8910 | case R_PPC64_GOT_TLSLD16_HA: |
8911 | case R_PPC64_GOT_TLSGD16_HA: | |
8912 | case R_PPC64_GOT_TPREL16_HA: | |
8913 | case R_PPC64_GOT_DTPREL16_HA: | |
8914 | case R_PPC64_GOT16_HA: | |
8915 | case R_PPC64_TOC16_HA: | |
8916 | insn_check = check_ha; | |
8917 | break; | |
98528052 | 8918 | |
d4f1ee75 AM |
8919 | case R_PPC64_GOT_TLSLD16_LO: |
8920 | case R_PPC64_GOT_TLSGD16_LO: | |
8921 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8922 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
8923 | case R_PPC64_GOT16_LO: | |
8924 | case R_PPC64_GOT16_LO_DS: | |
8925 | case R_PPC64_TOC16_LO: | |
8926 | case R_PPC64_TOC16_LO_DS: | |
8927 | insn_check = check_lo; | |
8928 | break; | |
8929 | } | |
560c8763 | 8930 | |
d4f1ee75 AM |
8931 | if (insn_check != no_check) |
8932 | { | |
8933 | bfd_vma off = rel->r_offset & ~3; | |
8934 | unsigned char buf[4]; | |
8935 | unsigned int insn; | |
c5614fa4 | 8936 | |
d4f1ee75 AM |
8937 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
8938 | { | |
8939 | free (used); | |
8940 | goto error_ret; | |
8941 | } | |
8942 | insn = bfd_get_32 (ibfd, buf); | |
8943 | if (insn_check == check_lo | |
8944 | ? !ok_lo_toc_insn (insn) | |
8945 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8946 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8947 | { | |
8948 | char str[12]; | |
8949 | ||
8950 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
8951 | sprintf (str, "%#08x", insn); | |
8952 | info->callbacks->einfo | |
8953 | (_("%P: %H: toc optimization is not supported for" | |
8954 | " %s instruction.\n"), | |
8955 | ibfd, sec, rel->r_offset & ~3, str); | |
8956 | } | |
8957 | } | |
c5614fa4 | 8958 | |
d4f1ee75 AM |
8959 | switch (r_type) |
8960 | { | |
8961 | case R_PPC64_TOC16: | |
8962 | case R_PPC64_TOC16_LO: | |
8963 | case R_PPC64_TOC16_HI: | |
8964 | case R_PPC64_TOC16_HA: | |
8965 | case R_PPC64_TOC16_DS: | |
8966 | case R_PPC64_TOC16_LO_DS: | |
8967 | /* In case we're taking addresses of toc entries. */ | |
8968 | case R_PPC64_ADDR64: | |
8969 | break; | |
c5614fa4 | 8970 | |
d4f1ee75 AM |
8971 | default: |
8972 | continue; | |
8973 | } | |
c5614fa4 | 8974 | |
d4f1ee75 AM |
8975 | r_symndx = ELF64_R_SYM (rel->r_info); |
8976 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8977 | r_symndx, ibfd)) | |
8978 | { | |
8979 | free (used); | |
8980 | goto error_ret; | |
8981 | } | |
c5614fa4 | 8982 | |
d4f1ee75 AM |
8983 | if (sym_sec != toc) |
8984 | continue; | |
c5614fa4 | 8985 | |
d4f1ee75 AM |
8986 | if (h != NULL) |
8987 | val = h->root.u.def.value; | |
8988 | else | |
8989 | val = sym->st_value; | |
8990 | val += rel->r_addend; | |
ba761f19 | 8991 | |
d4f1ee75 AM |
8992 | if (val >= toc->size) |
8993 | continue; | |
ba761f19 | 8994 | |
d4f1ee75 AM |
8995 | if ((skip[val >> 3] & can_optimize) != 0) |
8996 | { | |
8997 | bfd_vma off; | |
8998 | unsigned char opc; | |
8999 | ||
9000 | switch (r_type) | |
9001 | { | |
9002 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9003 | break; |
ba761f19 | 9004 | |
d4f1ee75 AM |
9005 | case R_PPC64_TOC16_LO_DS: |
9006 | off = rel->r_offset; | |
9007 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9008 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9009 | off, 1)) | |
9010 | { | |
9011 | free (used); | |
9012 | goto error_ret; | |
9013 | } | |
9014 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9015 | break; | |
9016 | /* Fall thru */ | |
ba761f19 | 9017 | |
d4f1ee75 AM |
9018 | default: |
9019 | /* Wrong sort of reloc, or not a ld. We may | |
9020 | as well clear ref_from_discarded too. */ | |
9021 | skip[val >> 3] = 0; | |
9022 | } | |
9023 | } | |
9024 | ||
9025 | if (sec != toc) | |
9026 | used[val >> 3] = 1; | |
9027 | /* For the toc section, we only mark as used if this | |
9028 | entry itself isn't unused. */ | |
9029 | else if ((used[rel->r_offset >> 3] | |
9030 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9031 | && !used[val >> 3]) | |
9032 | { | |
9033 | /* Do all the relocs again, to catch reference | |
9034 | chains. */ | |
9035 | repeat = 1; | |
9036 | used[val >> 3] = 1; | |
9037 | } | |
9038 | } | |
9039 | } | |
c5614fa4 | 9040 | while (repeat); |
854b41e7 AM |
9041 | |
9042 | if (elf_section_data (sec)->relocs != relstart) | |
9043 | free (relstart); | |
c5614fa4 AM |
9044 | } |
9045 | ||
9046 | /* Merge the used and skip arrays. Assume that TOC | |
9047 | doublewords not appearing as either used or unused belong | |
9048 | to to an entry more than one doubleword in size. */ | |
9049 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
9050 | drop < skip + (toc->size + 7) / 8; | |
9051 | ++drop, ++keep) | |
9052 | { | |
9053 | if (*keep) | |
9054 | { | |
ba761f19 AM |
9055 | *drop &= ~ref_from_discarded; |
9056 | if ((*drop & can_optimize) != 0) | |
9057 | some_unused = 1; | |
c5614fa4 AM |
9058 | last = 0; |
9059 | } | |
b140b010 | 9060 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9061 | { |
9062 | some_unused = 1; | |
ba761f19 | 9063 | last = ref_from_discarded; |
c5614fa4 AM |
9064 | } |
9065 | else | |
9066 | *drop = last; | |
9067 | } | |
9068 | ||
9069 | free (used); | |
9070 | ||
9071 | if (some_unused) | |
9072 | { | |
9073 | bfd_byte *contents, *src; | |
9074 | unsigned long off; | |
d62b3684 | 9075 | Elf_Internal_Sym *sym; |
ba761f19 | 9076 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9077 | |
9078 | /* Shuffle the toc contents, and at the same time convert the | |
9079 | skip array from booleans into offsets. */ | |
9080 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9081 | goto error_ret; | |
9082 | ||
9083 | elf_section_data (toc)->this_hdr.contents = contents; | |
9084 | ||
9085 | for (src = contents, off = 0, drop = skip; | |
9086 | src < contents + toc->size; | |
9087 | src += 8, ++drop) | |
9088 | { | |
ba761f19 AM |
9089 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9090 | off += 8; | |
c5614fa4 AM |
9091 | else if (off != 0) |
9092 | { | |
9093 | *drop = off; | |
9094 | memcpy (src - off, src, 8); | |
9095 | } | |
9096 | } | |
854b41e7 | 9097 | *drop = off; |
c5614fa4 AM |
9098 | toc->rawsize = toc->size; |
9099 | toc->size = src - contents - off; | |
9100 | ||
ba761f19 AM |
9101 | /* Adjust addends for relocs against the toc section sym, |
9102 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9103 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9104 | { | |
9105 | if (sec->reloc_count == 0 | |
dbaa2011 | 9106 | || discarded_section (sec)) |
c5614fa4 AM |
9107 | continue; |
9108 | ||
9109 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9110 | info->keep_memory); |
c5614fa4 AM |
9111 | if (relstart == NULL) |
9112 | goto error_ret; | |
9113 | ||
9114 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9115 | { | |
9116 | enum elf_ppc64_reloc_type r_type; | |
9117 | unsigned long r_symndx; | |
9118 | asection *sym_sec; | |
9119 | struct elf_link_hash_entry *h; | |
854b41e7 | 9120 | bfd_vma val; |
c5614fa4 AM |
9121 | |
9122 | r_type = ELF64_R_TYPE (rel->r_info); | |
9123 | switch (r_type) | |
9124 | { | |
9125 | default: | |
9126 | continue; | |
9127 | ||
9128 | case R_PPC64_TOC16: | |
9129 | case R_PPC64_TOC16_LO: | |
9130 | case R_PPC64_TOC16_HI: | |
9131 | case R_PPC64_TOC16_HA: | |
9132 | case R_PPC64_TOC16_DS: | |
9133 | case R_PPC64_TOC16_LO_DS: | |
9134 | case R_PPC64_ADDR64: | |
9135 | break; | |
9136 | } | |
9137 | ||
9138 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9139 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9140 | r_symndx, ibfd)) | |
9141 | goto error_ret; | |
9142 | ||
ba761f19 | 9143 | if (sym_sec != toc) |
c5614fa4 AM |
9144 | continue; |
9145 | ||
ba761f19 AM |
9146 | if (h != NULL) |
9147 | val = h->root.u.def.value; | |
9148 | else | |
9149 | { | |
9150 | val = sym->st_value; | |
9151 | if (val != 0) | |
9152 | local_toc_syms = TRUE; | |
9153 | } | |
9154 | ||
9155 | val += rel->r_addend; | |
854b41e7 AM |
9156 | |
9157 | if (val > toc->rawsize) | |
9158 | val = toc->rawsize; | |
ba761f19 AM |
9159 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9160 | continue; | |
9161 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9162 | { | |
9163 | Elf_Internal_Rela *tocrel | |
425b145b | 9164 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9165 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9166 | ||
9167 | switch (r_type) | |
9168 | { | |
9169 | case R_PPC64_TOC16_HA: | |
9170 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9171 | break; | |
9172 | ||
9173 | case R_PPC64_TOC16_LO_DS: | |
9174 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9175 | break; | |
9176 | ||
9177 | default: | |
28942f62 AM |
9178 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9179 | ppc_howto_init (); | |
b140b010 | 9180 | info->callbacks->einfo |
bc30df16 | 9181 | (_("%P: %H: %s references " |
b140b010 AM |
9182 | "optimized away TOC entry\n"), |
9183 | ibfd, sec, rel->r_offset, | |
9184 | ppc64_elf_howto_table[r_type]->name); | |
9185 | bfd_set_error (bfd_error_bad_value); | |
9186 | goto error_ret; | |
ba761f19 AM |
9187 | } |
9188 | rel->r_addend = tocrel->r_addend; | |
9189 | elf_section_data (sec)->relocs = relstart; | |
9190 | continue; | |
9191 | } | |
9192 | ||
9193 | if (h != NULL || sym->st_value != 0) | |
9194 | continue; | |
854b41e7 AM |
9195 | |
9196 | rel->r_addend -= skip[val >> 3]; | |
9197 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9198 | } |
854b41e7 AM |
9199 | |
9200 | if (elf_section_data (sec)->relocs != relstart) | |
9201 | free (relstart); | |
c5614fa4 AM |
9202 | } |
9203 | ||
9204 | /* We shouldn't have local or global symbols defined in the TOC, | |
9205 | but handle them anyway. */ | |
df22d223 AM |
9206 | if (local_syms != NULL) |
9207 | for (sym = local_syms; | |
9208 | sym < local_syms + symtab_hdr->sh_info; | |
9209 | ++sym) | |
9210 | if (sym->st_value != 0 | |
9211 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9212 | { | |
9213 | unsigned long i; | |
854b41e7 | 9214 | |
df22d223 AM |
9215 | if (sym->st_value > toc->rawsize) |
9216 | i = toc->rawsize >> 3; | |
9217 | else | |
9218 | i = sym->st_value >> 3; | |
854b41e7 | 9219 | |
df22d223 AM |
9220 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9221 | { | |
9222 | if (local_toc_syms) | |
9223 | (*_bfd_error_handler) | |
9224 | (_("%s defined on removed toc entry"), | |
9225 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9226 | do | |
9227 | ++i; | |
9228 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9229 | sym->st_value = (bfd_vma) i << 3; | |
9230 | } | |
d62b3684 | 9231 | |
df22d223 AM |
9232 | sym->st_value -= skip[i]; |
9233 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9234 | } | |
c5614fa4 | 9235 | |
854b41e7 | 9236 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9237 | if (toc_inf.global_toc_syms) |
9238 | { | |
9239 | toc_inf.toc = toc; | |
9240 | toc_inf.skip = skip; | |
9241 | toc_inf.global_toc_syms = FALSE; | |
9242 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9243 | &toc_inf); | |
9244 | } | |
854b41e7 AM |
9245 | |
9246 | if (toc->reloc_count != 0) | |
9247 | { | |
d4730f92 | 9248 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9249 | Elf_Internal_Rela *wrel; |
9250 | bfd_size_type sz; | |
9251 | ||
854b41e7 | 9252 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9253 | if (toc_relocs == NULL) |
9254 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9255 | info->keep_memory); | |
9256 | if (toc_relocs == NULL) | |
9257 | goto error_ret; | |
9258 | ||
425b145b AM |
9259 | wrel = toc_relocs; |
9260 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9261 | if ((skip[rel->r_offset >> 3] |
9262 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9263 | { |
9264 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9265 | wrel->r_info = rel->r_info; | |
9266 | wrel->r_addend = rel->r_addend; | |
9267 | ++wrel; | |
9268 | } | |
9269 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9270 | &local_syms, NULL, NULL)) | |
9271 | goto error_ret; | |
9272 | ||
425b145b AM |
9273 | elf_section_data (toc)->relocs = toc_relocs; |
9274 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9275 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9276 | sz = rel_hdr->sh_entsize; | |
9277 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9278 | } |
c5614fa4 | 9279 | } |
28be611c AM |
9280 | else if (toc_relocs != NULL |
9281 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9282 | free (toc_relocs); |
c5614fa4 AM |
9283 | |
9284 | if (local_syms != NULL | |
9285 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9286 | { | |
9287 | if (!info->keep_memory) | |
9288 | free (local_syms); | |
9289 | else | |
9290 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9291 | } | |
9292 | free (skip); | |
9293 | } | |
9294 | ||
9295 | return TRUE; | |
9296 | } | |
9297 | ||
1bbe0902 AM |
9298 | /* Return true iff input section I references the TOC using |
9299 | instructions limited to +/-32k offsets. */ | |
9300 | ||
9301 | bfd_boolean | |
9302 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9303 | { | |
9304 | return (is_ppc64_elf (i->owner) | |
9305 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9306 | } | |
9307 | ||
927be08e AM |
9308 | /* Allocate space for one GOT entry. */ |
9309 | ||
9310 | static void | |
9311 | allocate_got (struct elf_link_hash_entry *h, | |
9312 | struct bfd_link_info *info, | |
9313 | struct got_entry *gent) | |
9314 | { | |
9315 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9316 | bfd_boolean dyn; | |
9317 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
9318 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9319 | ? 16 : 8); | |
9320 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9321 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9322 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9323 | ||
9324 | gent->got.offset = got->size; | |
9325 | got->size += entsize; | |
9326 | ||
9327 | dyn = htab->elf.dynamic_sections_created; | |
19e08130 | 9328 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9329 | { |
33e44f2e | 9330 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9331 | htab->got_reli_size += rentsize; |
927be08e | 9332 | } |
19e08130 AM |
9333 | else if ((info->shared |
9334 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
9335 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
9336 | || h->root.type != bfd_link_hash_undefweak)) | |
927be08e | 9337 | { |
19e08130 | 9338 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9339 | relgot->size += rentsize; |
927be08e AM |
9340 | } |
9341 | } | |
9342 | ||
7865406b AM |
9343 | /* This function merges got entries in the same toc group. */ |
9344 | ||
9345 | static void | |
9346 | merge_got_entries (struct got_entry **pent) | |
9347 | { | |
9348 | struct got_entry *ent, *ent2; | |
9349 | ||
9350 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9351 | if (!ent->is_indirect) | |
9352 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9353 | if (!ent2->is_indirect | |
9354 | && ent2->addend == ent->addend | |
9355 | && ent2->tls_type == ent->tls_type | |
9356 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9357 | { | |
9358 | ent2->is_indirect = TRUE; | |
9359 | ent2->got.ent = ent; | |
9360 | } | |
9361 | } | |
9362 | ||
65f38f15 AM |
9363 | /* Allocate space in .plt, .got and associated reloc sections for |
9364 | dynamic relocs. */ | |
5bd4f169 | 9365 | |
b34976b6 | 9366 | static bfd_boolean |
4ce794b7 | 9367 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9368 | { |
65f38f15 AM |
9369 | struct bfd_link_info *info; |
9370 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9371 | asection *s; |
65f38f15 | 9372 | struct ppc_link_hash_entry *eh; |
6061a67d | 9373 | struct elf_dyn_relocs *p; |
0b8bcf0d | 9374 | struct got_entry **pgent, *gent; |
5bd4f169 | 9375 | |
e92d460e | 9376 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9377 | return TRUE; |
5bd4f169 | 9378 | |
65f38f15 AM |
9379 | info = (struct bfd_link_info *) inf; |
9380 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9381 | if (htab == NULL) |
9382 | return FALSE; | |
5bd4f169 | 9383 | |
e054468f AM |
9384 | if ((htab->elf.dynamic_sections_created |
9385 | && h->dynindx != -1 | |
9386 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
9387 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 9388 | { |
411e1bfb AM |
9389 | struct plt_entry *pent; |
9390 | bfd_boolean doneone = FALSE; | |
9391 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9392 | if (pent->plt.refcount > 0) | |
9393 | { | |
25f23106 AM |
9394 | if (!htab->elf.dynamic_sections_created |
9395 | || h->dynindx == -1) | |
e054468f | 9396 | { |
33e44f2e | 9397 | s = htab->elf.iplt; |
e054468f | 9398 | pent->plt.offset = s->size; |
b9e5796b | 9399 | s->size += PLT_ENTRY_SIZE (htab); |
33e44f2e | 9400 | s = htab->elf.irelplt; |
e054468f AM |
9401 | } |
9402 | else | |
9403 | { | |
9404 | /* If this is the first .plt entry, make room for the special | |
9405 | first entry. */ | |
33e44f2e | 9406 | s = htab->elf.splt; |
e054468f | 9407 | if (s->size == 0) |
b9e5796b | 9408 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
e054468f AM |
9409 | |
9410 | pent->plt.offset = s->size; | |
9411 | ||
9412 | /* Make room for this entry. */ | |
b9e5796b | 9413 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f AM |
9414 | |
9415 | /* Make room for the .glink code. */ | |
9416 | s = htab->glink; | |
9417 | if (s->size == 0) | |
9418 | s->size += GLINK_CALL_STUB_SIZE; | |
b9e5796b AM |
9419 | if (htab->opd_abi) |
9420 | { | |
9421 | /* We need bigger stubs past index 32767. */ | |
9422 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
9423 | s->size += 4; | |
9424 | s->size += 2*4; | |
9425 | } | |
9426 | else | |
e054468f | 9427 | s->size += 4; |
e054468f AM |
9428 | |
9429 | /* We also need to make an entry in the .rela.plt section. */ | |
33e44f2e | 9430 | s = htab->elf.srelplt; |
e054468f | 9431 | } |
eea6121a | 9432 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
9433 | doneone = TRUE; |
9434 | } | |
9435 | else | |
9436 | pent->plt.offset = (bfd_vma) -1; | |
9437 | if (!doneone) | |
65f38f15 | 9438 | { |
411e1bfb | 9439 | h->plt.plist = NULL; |
f5385ebf | 9440 | h->needs_plt = 0; |
65f38f15 AM |
9441 | } |
9442 | } | |
9443 | else | |
9444 | { | |
411e1bfb | 9445 | h->plt.plist = NULL; |
f5385ebf | 9446 | h->needs_plt = 0; |
65f38f15 AM |
9447 | } |
9448 | ||
951fd09b AM |
9449 | eh = (struct ppc_link_hash_entry *) h; |
9450 | /* Run through the TLS GD got entries first if we're changing them | |
9451 | to TPREL. */ | |
e7b938ca | 9452 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
9453 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9454 | if (gent->got.refcount > 0 | |
9455 | && (gent->tls_type & TLS_GD) != 0) | |
9456 | { | |
9457 | /* This was a GD entry that has been converted to TPREL. If | |
9458 | there happens to be a TPREL entry we can use that one. */ | |
9459 | struct got_entry *ent; | |
9460 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9461 | if (ent->got.refcount > 0 | |
9462 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9463 | && ent->addend == gent->addend |
9464 | && ent->owner == gent->owner) | |
951fd09b AM |
9465 | { |
9466 | gent->got.refcount = 0; | |
9467 | break; | |
9468 | } | |
9469 | ||
9470 | /* If not, then we'll be using our own TPREL entry. */ | |
9471 | if (gent->got.refcount != 0) | |
9472 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9473 | } | |
9474 | ||
7865406b AM |
9475 | /* Remove any list entry that won't generate a word in the GOT before |
9476 | we call merge_got_entries. Otherwise we risk merging to empty | |
9477 | entries. */ | |
0b8bcf0d AM |
9478 | pgent = &h->got.glist; |
9479 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9480 | if (gent->got.refcount > 0) |
7865406b AM |
9481 | { |
9482 | if ((gent->tls_type & TLS_LD) != 0 | |
9483 | && !h->def_dynamic) | |
9484 | { | |
9485 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9486 | *pgent = gent->next; | |
9487 | } | |
9488 | else | |
9489 | pgent = &gent->next; | |
9490 | } | |
9491 | else | |
9492 | *pgent = gent->next; | |
9493 | ||
9494 | if (!htab->do_multi_toc) | |
9495 | merge_got_entries (&h->got.glist); | |
9496 | ||
9497 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9498 | if (!gent->is_indirect) | |
411e1bfb AM |
9499 | { |
9500 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
9501 | Undefined weak syms won't yet be marked as dynamic, |
9502 | nor will all TLS symbols. */ | |
411e1bfb | 9503 | if (h->dynindx == -1 |
b099ab9f | 9504 | && !h->forced_local |
25f23106 | 9505 | && h->type != STT_GNU_IFUNC |
b099ab9f | 9506 | && htab->elf.dynamic_sections_created) |
411e1bfb | 9507 | { |
c152c796 | 9508 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
9509 | return FALSE; |
9510 | } | |
65f38f15 | 9511 | |
0c8d6e5c | 9512 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9513 | abort (); |
0ffa91dd | 9514 | |
927be08e | 9515 | allocate_got (h, info, gent); |
411e1bfb | 9516 | } |
65f38f15 | 9517 | |
b099ab9f | 9518 | if (eh->dyn_relocs == NULL |
25f23106 | 9519 | || (!htab->elf.dynamic_sections_created |
14b5f73f | 9520 | && h->type != STT_GNU_IFUNC)) |
b34976b6 | 9521 | return TRUE; |
65f38f15 AM |
9522 | |
9523 | /* In the shared -Bsymbolic case, discard space allocated for | |
9524 | dynamic pc-relative relocs against symbols which turn out to be | |
9525 | defined in regular objects. For the normal shared case, discard | |
9526 | space for relocs that have become local due to symbol visibility | |
9527 | changes. */ | |
9528 | ||
9529 | if (info->shared) | |
9530 | { | |
9c7a29a3 | 9531 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 9532 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
9533 | generated via assembly. We want calls to protected symbols to |
9534 | resolve directly to the function rather than going via the plt. | |
9535 | If people want function pointer comparisons to work as expected | |
9536 | then they should avoid writing weird assembly. */ | |
09695f56 | 9537 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 9538 | { |
6061a67d | 9539 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
9540 | |
9541 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 9542 | { |
65f38f15 AM |
9543 | p->count -= p->pc_count; |
9544 | p->pc_count = 0; | |
9545 | if (p->count == 0) | |
9546 | *pp = p->next; | |
9547 | else | |
9548 | pp = &p->next; | |
5bd4f169 | 9549 | } |
65f38f15 | 9550 | } |
4e795f50 AM |
9551 | |
9552 | /* Also discard relocs on undefined weak syms with non-default | |
9553 | visibility. */ | |
cab87ef9 AM |
9554 | if (eh->dyn_relocs != NULL |
9555 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
9556 | { |
9557 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9558 | eh->dyn_relocs = NULL; | |
9559 | ||
9560 | /* Make sure this symbol is output as a dynamic symbol. | |
9561 | Undefined weak syms won't yet be marked as dynamic. */ | |
9562 | else if (h->dynindx == -1 | |
9563 | && !h->forced_local) | |
9564 | { | |
9565 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
9566 | return FALSE; | |
9567 | } | |
9568 | } | |
65f38f15 | 9569 | } |
25f23106 AM |
9570 | else if (h->type == STT_GNU_IFUNC) |
9571 | { | |
9572 | if (!h->non_got_ref) | |
9573 | eh->dyn_relocs = NULL; | |
9574 | } | |
f4656909 | 9575 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
9576 | { |
9577 | /* For the non-shared case, discard space for relocs against | |
9578 | symbols which turn out to need copy relocs or are not | |
9579 | dynamic. */ | |
9580 | ||
f5385ebf | 9581 | if (!h->non_got_ref |
f5385ebf | 9582 | && !h->def_regular) |
65f38f15 AM |
9583 | { |
9584 | /* Make sure this symbol is output as a dynamic symbol. | |
9585 | Undefined weak syms won't yet be marked as dynamic. */ | |
9586 | if (h->dynindx == -1 | |
f5385ebf | 9587 | && !h->forced_local) |
65f38f15 | 9588 | { |
c152c796 | 9589 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 9590 | return FALSE; |
65f38f15 AM |
9591 | } |
9592 | ||
9593 | /* If that succeeded, we know we'll be keeping all the | |
9594 | relocs. */ | |
9595 | if (h->dynindx != -1) | |
9596 | goto keep; | |
9597 | } | |
9598 | ||
9599 | eh->dyn_relocs = NULL; | |
9600 | ||
ec338859 | 9601 | keep: ; |
65f38f15 AM |
9602 | } |
9603 | ||
9604 | /* Finally, allocate space. */ | |
9605 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
9606 | { | |
9607 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
19e08130 | 9608 | if (eh->elf.type == STT_GNU_IFUNC) |
33e44f2e | 9609 | sreloc = htab->elf.irelplt; |
eea6121a | 9610 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
9611 | } |
9612 | ||
b34976b6 | 9613 | return TRUE; |
65f38f15 AM |
9614 | } |
9615 | ||
a345bc8d AM |
9616 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9617 | to set up space for global entry stubs. These are put in glink, | |
9618 | after the branch table. */ | |
65f38f15 | 9619 | |
b34976b6 | 9620 | static bfd_boolean |
a345bc8d | 9621 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9622 | { |
a345bc8d AM |
9623 | struct bfd_link_info *info; |
9624 | struct ppc_link_hash_table *htab; | |
9625 | struct plt_entry *pent; | |
9626 | asection *s; | |
65f38f15 | 9627 | |
a345bc8d AM |
9628 | if (h->root.type == bfd_link_hash_indirect) |
9629 | return TRUE; | |
65f38f15 | 9630 | |
a345bc8d AM |
9631 | if (!h->pointer_equality_needed) |
9632 | return TRUE; | |
65f38f15 | 9633 | |
a345bc8d AM |
9634 | if (h->def_regular) |
9635 | return TRUE; | |
65f38f15 | 9636 | |
a345bc8d AM |
9637 | info = inf; |
9638 | htab = ppc_hash_table (info); | |
9639 | if (htab == NULL) | |
9640 | return FALSE; | |
9641 | ||
9642 | s = htab->glink; | |
9643 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9644 | if (pent->plt.offset != (bfd_vma) -1 | |
9645 | && pent->addend == 0) | |
9646 | { | |
afe397ea AM |
9647 | /* For ELFv2, if this symbol is not defined in a regular file |
9648 | and we are not generating a shared library or pie, then we | |
9649 | need to define the symbol in the executable on a call stub. | |
9650 | This is to avoid text relocations. */ | |
a345bc8d | 9651 | s->size = (s->size + 15) & -16; |
afe397ea AM |
9652 | h->root.u.def.section = s; |
9653 | h->root.u.def.value = s->size; | |
a345bc8d AM |
9654 | s->size += 16; |
9655 | break; | |
9656 | } | |
9657 | return TRUE; | |
9658 | } | |
9659 | ||
9660 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
9661 | read-only sections. */ | |
9662 | ||
9663 | static bfd_boolean | |
9664 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
9665 | { | |
9666 | if (h->root.type == bfd_link_hash_indirect) | |
9667 | return TRUE; | |
9668 | ||
9669 | if (readonly_dynrelocs (h)) | |
9670 | { | |
9671 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
9672 | ||
9673 | /* Not an error, just cut short the traversal. */ | |
9674 | return FALSE; | |
65f38f15 | 9675 | } |
b34976b6 | 9676 | return TRUE; |
65f38f15 AM |
9677 | } |
9678 | ||
9679 | /* Set the sizes of the dynamic sections. */ | |
9680 | ||
b34976b6 | 9681 | static bfd_boolean |
ee67d69a | 9682 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9683 | struct bfd_link_info *info) |
65f38f15 AM |
9684 | { |
9685 | struct ppc_link_hash_table *htab; | |
9686 | bfd *dynobj; | |
9687 | asection *s; | |
b34976b6 | 9688 | bfd_boolean relocs; |
65f38f15 | 9689 | bfd *ibfd; |
7865406b | 9690 | struct got_entry *first_tlsld; |
65f38f15 AM |
9691 | |
9692 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9693 | if (htab == NULL) |
9694 | return FALSE; | |
9695 | ||
65f38f15 AM |
9696 | dynobj = htab->elf.dynobj; |
9697 | if (dynobj == NULL) | |
9698 | abort (); | |
9699 | ||
9700 | if (htab->elf.dynamic_sections_created) | |
9701 | { | |
9702 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 9703 | if (info->executable) |
65f38f15 | 9704 | { |
3d4d4302 | 9705 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9706 | if (s == NULL) |
9707 | abort (); | |
eea6121a | 9708 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9709 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9710 | } | |
9711 | } | |
9712 | ||
9713 | /* Set up .got offsets for local syms, and space for local dynamic | |
9714 | relocs. */ | |
c72f2fb2 | 9715 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9716 | { |
411e1bfb AM |
9717 | struct got_entry **lgot_ents; |
9718 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9719 | struct plt_entry **local_plt; |
9720 | struct plt_entry **end_local_plt; | |
f961d9dd | 9721 | unsigned char *lgot_masks; |
65f38f15 AM |
9722 | bfd_size_type locsymcount; |
9723 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9724 | |
0c8d6e5c | 9725 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9726 | continue; |
9727 | ||
9728 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9729 | { | |
19e08130 | 9730 | struct ppc_dyn_relocs *p; |
65f38f15 | 9731 | |
6edfbbad | 9732 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9733 | { |
ec338859 AM |
9734 | if (!bfd_is_abs_section (p->sec) |
9735 | && bfd_is_abs_section (p->sec->output_section)) | |
9736 | { | |
9737 | /* Input section has been discarded, either because | |
9738 | it is a copy of a linkonce section or due to | |
9739 | linker script /DISCARD/, so we'll be discarding | |
9740 | the relocs too. */ | |
9741 | } | |
248866a8 | 9742 | else if (p->count != 0) |
ec338859 | 9743 | { |
19e08130 AM |
9744 | asection *srel = elf_section_data (p->sec)->sreloc; |
9745 | if (p->ifunc) | |
33e44f2e | 9746 | srel = htab->elf.irelplt; |
eea6121a | 9747 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9748 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9749 | info->flags |= DF_TEXTREL; | |
ec338859 | 9750 | } |
65f38f15 AM |
9751 | } |
9752 | } | |
9753 | ||
411e1bfb AM |
9754 | lgot_ents = elf_local_got_ents (ibfd); |
9755 | if (!lgot_ents) | |
65f38f15 AM |
9756 | continue; |
9757 | ||
0ffa91dd | 9758 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9759 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9760 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9761 | local_plt = (struct plt_entry **) end_lgot_ents; |
9762 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9763 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9764 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9765 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9766 | { |
0b8bcf0d | 9767 | struct got_entry **pent, *ent; |
411e1bfb | 9768 | |
0b8bcf0d AM |
9769 | pent = lgot_ents; |
9770 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9771 | if (ent->got.refcount > 0) |
9772 | { | |
e7b938ca | 9773 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9774 | { |
927be08e | 9775 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9776 | *pent = ent->next; |
411e1bfb AM |
9777 | } |
9778 | else | |
9779 | { | |
19e08130 AM |
9780 | unsigned int ent_size = 8; |
9781 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
9782 | ||
eea6121a | 9783 | ent->got.offset = s->size; |
e7b938ca | 9784 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 9785 | { |
19e08130 AM |
9786 | ent_size *= 2; |
9787 | rel_size *= 2; | |
9788 | } | |
9789 | s->size += ent_size; | |
9790 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
9791 | { | |
33e44f2e | 9792 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
9793 | htab->got_reli_size += rel_size; |
9794 | } | |
9795 | else if (info->shared) | |
9796 | { | |
9797 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9798 | srel->size += rel_size; | |
927be08e | 9799 | } |
0b8bcf0d | 9800 | pent = &ent->next; |
411e1bfb AM |
9801 | } |
9802 | } | |
9803 | else | |
0b8bcf0d | 9804 | *pent = ent->next; |
65f38f15 | 9805 | } |
e054468f AM |
9806 | |
9807 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9808 | for (; local_plt < end_local_plt; ++local_plt) | |
9809 | { | |
9810 | struct plt_entry *ent; | |
9811 | ||
9812 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9813 | if (ent->plt.refcount > 0) | |
9814 | { | |
33e44f2e | 9815 | s = htab->elf.iplt; |
e054468f | 9816 | ent->plt.offset = s->size; |
b9e5796b | 9817 | s->size += PLT_ENTRY_SIZE (htab); |
e054468f | 9818 | |
33e44f2e | 9819 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9820 | } |
9821 | else | |
9822 | ent->plt.offset = (bfd_vma) -1; | |
9823 | } | |
65f38f15 AM |
9824 | } |
9825 | ||
9826 | /* Allocate global sym .plt and .got entries, and space for global | |
9827 | sym dynamic relocs. */ | |
4ce794b7 | 9828 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d AM |
9829 | /* Stash the end of glink branch table. */ |
9830 | if (htab->glink != NULL) | |
9831 | htab->glink->rawsize = htab->glink->size; | |
9832 | ||
9833 | if (!htab->opd_abi && !info->shared) | |
9834 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); | |
65f38f15 | 9835 | |
7865406b | 9836 | first_tlsld = NULL; |
c72f2fb2 | 9837 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 9838 | { |
7865406b AM |
9839 | struct got_entry *ent; |
9840 | ||
0c8d6e5c | 9841 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9842 | continue; |
9843 | ||
7865406b AM |
9844 | ent = ppc64_tlsld_got (ibfd); |
9845 | if (ent->got.refcount > 0) | |
102890f0 | 9846 | { |
7865406b | 9847 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9848 | { |
7865406b AM |
9849 | ent->is_indirect = TRUE; |
9850 | ent->got.ent = first_tlsld; | |
9851 | } | |
9852 | else | |
9853 | { | |
9854 | if (first_tlsld == NULL) | |
9855 | first_tlsld = ent; | |
9856 | s = ppc64_elf_tdata (ibfd)->got; | |
9857 | ent->got.offset = s->size; | |
9858 | ent->owner = ibfd; | |
9859 | s->size += 16; | |
9860 | if (info->shared) | |
9861 | { | |
9862 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9863 | srel->size += sizeof (Elf64_External_Rela); | |
9864 | } | |
102890f0 AM |
9865 | } |
9866 | } | |
9867 | else | |
7865406b | 9868 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9869 | } |
9870 | ||
65f38f15 AM |
9871 | /* We now have determined the sizes of the various dynamic sections. |
9872 | Allocate memory for them. */ | |
b34976b6 | 9873 | relocs = FALSE; |
65f38f15 AM |
9874 | for (s = dynobj->sections; s != NULL; s = s->next) |
9875 | { | |
9876 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9877 | continue; | |
9878 | ||
4ce794b7 | 9879 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9880 | /* These haven't been allocated yet; don't strip. */ |
9881 | continue; | |
33e44f2e AM |
9882 | else if (s == htab->elf.sgot |
9883 | || s == htab->elf.splt | |
9884 | || s == htab->elf.iplt | |
c456f082 AM |
9885 | || s == htab->glink |
9886 | || s == htab->dynbss) | |
65f38f15 AM |
9887 | { |
9888 | /* Strip this section if we don't need it; see the | |
9889 | comment below. */ | |
5bd4f169 | 9890 | } |
58d180e8 AM |
9891 | else if (s == htab->glink_eh_frame) |
9892 | { | |
9893 | if (!bfd_is_abs_section (s->output_section)) | |
9894 | /* Not sized yet. */ | |
9895 | continue; | |
9896 | } | |
70cc837d | 9897 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9898 | { |
c456f082 | 9899 | if (s->size != 0) |
5bd4f169 | 9900 | { |
33e44f2e | 9901 | if (s != htab->elf.srelplt) |
b34976b6 | 9902 | relocs = TRUE; |
5bd4f169 AM |
9903 | |
9904 | /* We use the reloc_count field as a counter if we need | |
9905 | to copy relocs into the output file. */ | |
9906 | s->reloc_count = 0; | |
9907 | } | |
9908 | } | |
65f38f15 | 9909 | else |
5bd4f169 AM |
9910 | { |
9911 | /* It's not one of our sections, so don't allocate space. */ | |
9912 | continue; | |
9913 | } | |
9914 | ||
eea6121a | 9915 | if (s->size == 0) |
5bd4f169 | 9916 | { |
c456f082 AM |
9917 | /* If we don't need this section, strip it from the |
9918 | output file. This is mostly to handle .rela.bss and | |
9919 | .rela.plt. We must create both sections in | |
9920 | create_dynamic_sections, because they must be created | |
9921 | before the linker maps input sections to output | |
9922 | sections. The linker does that before | |
9923 | adjust_dynamic_symbol is called, and it is that | |
9924 | function which decides whether anything needs to go | |
9925 | into these sections. */ | |
8423293d | 9926 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9927 | continue; |
9928 | } | |
9929 | ||
c456f082 | 9930 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9931 | continue; |
9932 | ||
65f38f15 AM |
9933 | /* Allocate memory for the section contents. We use bfd_zalloc |
9934 | here in case unused entries are not reclaimed before the | |
9935 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9936 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9937 | sections instead of garbage. | |
9938 | We also rely on the section contents being zero when writing | |
9939 | the GOT. */ | |
eea6121a | 9940 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9941 | if (s->contents == NULL) |
b34976b6 | 9942 | return FALSE; |
5bd4f169 AM |
9943 | } |
9944 | ||
c72f2fb2 | 9945 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 9946 | { |
0c8d6e5c | 9947 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9948 | continue; |
9949 | ||
e717da7e | 9950 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 9951 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 9952 | { |
eea6121a | 9953 | if (s->size == 0) |
8423293d | 9954 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9955 | else |
9956 | { | |
eea6121a | 9957 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9958 | if (s->contents == NULL) |
9959 | return FALSE; | |
9960 | } | |
9961 | } | |
9962 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9963 | if (s != NULL) | |
9964 | { | |
eea6121a | 9965 | if (s->size == 0) |
8423293d | 9966 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9967 | else |
9968 | { | |
eea6121a | 9969 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9970 | if (s->contents == NULL) |
9971 | return FALSE; | |
9972 | relocs = TRUE; | |
9973 | s->reloc_count = 0; | |
9974 | } | |
9975 | } | |
9976 | } | |
9977 | ||
e86ce104 | 9978 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9979 | { |
e8910a83 AM |
9980 | bfd_boolean tls_opt; |
9981 | ||
5bd4f169 AM |
9982 | /* Add some entries to the .dynamic section. We fill in the |
9983 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9984 | must add the entries now so that we get the correct size for | |
9985 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9986 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9987 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9988 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9989 | |
36af4a4e | 9990 | if (info->executable) |
5bd4f169 | 9991 | { |
dc810e39 | 9992 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9993 | return FALSE; |
5bd4f169 AM |
9994 | } |
9995 | ||
33e44f2e | 9996 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 9997 | { |
dc810e39 AM |
9998 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9999 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10000 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10001 | || !add_dynamic_entry (DT_JMPREL, 0) |
10002 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10003 | return FALSE; |
5bd4f169 AM |
10004 | } |
10005 | ||
ee67d69a | 10006 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10007 | { |
10008 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10009 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10010 | return FALSE; |
19397422 AM |
10011 | } |
10012 | ||
e7d1c40c | 10013 | tls_opt = (!htab->params->no_tls_get_addr_opt |
e8910a83 AM |
10014 | && htab->tls_get_addr_fd != NULL |
10015 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10016 | if (tls_opt || !htab->opd_abi) | |
10017 | { | |
10018 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10019 | return FALSE; | |
10020 | } | |
a7f2871e | 10021 | |
5bd4f169 AM |
10022 | if (relocs) |
10023 | { | |
dc810e39 AM |
10024 | if (!add_dynamic_entry (DT_RELA, 0) |
10025 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10026 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10027 | return FALSE; |
5bd4f169 | 10028 | |
65f38f15 AM |
10029 | /* If any dynamic relocs apply to a read-only section, |
10030 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10031 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10032 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10033 | |
65f38f15 | 10034 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10035 | { |
65f38f15 | 10036 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10037 | return FALSE; |
5bd4f169 | 10038 | } |
5bd4f169 | 10039 | } |
5bd4f169 | 10040 | } |
65f38f15 | 10041 | #undef add_dynamic_entry |
5bd4f169 | 10042 | |
b34976b6 | 10043 | return TRUE; |
5bd4f169 AM |
10044 | } |
10045 | ||
a345bc8d AM |
10046 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10047 | ||
10048 | static bfd_boolean | |
10049 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10050 | { | |
10051 | if (h->plt.plist != NULL | |
10052 | && !h->def_regular | |
10053 | && !h->pointer_equality_needed) | |
10054 | return FALSE; | |
10055 | ||
10056 | return _bfd_elf_hash_symbol (h); | |
10057 | } | |
10058 | ||
721956f4 | 10059 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10060 | |
4ce794b7 AM |
10061 | static inline enum ppc_stub_type |
10062 | ppc_type_of_stub (asection *input_sec, | |
10063 | const Elf_Internal_Rela *rel, | |
10064 | struct ppc_link_hash_entry **hash, | |
e054468f | 10065 | struct plt_entry **plt_ent, |
6911b7dc AM |
10066 | bfd_vma destination, |
10067 | unsigned long local_off) | |
5bd4f169 | 10068 | { |
721956f4 AM |
10069 | struct ppc_link_hash_entry *h = *hash; |
10070 | bfd_vma location; | |
10071 | bfd_vma branch_offset; | |
10072 | bfd_vma max_branch_offset; | |
4ce794b7 | 10073 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10074 | |
721956f4 AM |
10075 | if (h != NULL) |
10076 | { | |
e054468f | 10077 | struct plt_entry *ent; |
7fe2b9a6 | 10078 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10079 | if (h->oh != NULL |
10080 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10081 | { |
10082 | fdh = ppc_follow_link (h->oh); | |
10083 | *hash = fdh; | |
10084 | } | |
8387904d | 10085 | |
e054468f AM |
10086 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10087 | if (ent->addend == rel->r_addend | |
10088 | && ent->plt.offset != (bfd_vma) -1) | |
10089 | { | |
e054468f AM |
10090 | *plt_ent = ent; |
10091 | return ppc_stub_plt_call; | |
10092 | } | |
5bd4f169 | 10093 | |
7fe2b9a6 AM |
10094 | /* Here, we know we don't have a plt entry. If we don't have a |
10095 | either a defined function descriptor or a defined entry symbol | |
10096 | in a regular object file, then it is pointless trying to make | |
10097 | any other type of stub. */ | |
854b41e7 AM |
10098 | if (!is_static_defined (&fdh->elf) |
10099 | && !is_static_defined (&h->elf)) | |
721956f4 | 10100 | return ppc_stub_none; |
5d1634d7 | 10101 | } |
e054468f AM |
10102 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10103 | { | |
10104 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10105 | struct plt_entry **local_plt = (struct plt_entry **) | |
10106 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10107 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10108 | ||
10109 | if (local_plt[r_symndx] != NULL) | |
10110 | { | |
10111 | struct plt_entry *ent; | |
10112 | ||
10113 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10114 | if (ent->addend == rel->r_addend | |
10115 | && ent->plt.offset != (bfd_vma) -1) | |
10116 | { | |
10117 | *plt_ent = ent; | |
10118 | return ppc_stub_plt_call; | |
10119 | } | |
10120 | } | |
10121 | } | |
5d1634d7 | 10122 | |
721956f4 AM |
10123 | /* Determine where the call point is. */ |
10124 | location = (input_sec->output_offset | |
10125 | + input_sec->output_section->vma | |
10126 | + rel->r_offset); | |
5d1634d7 | 10127 | |
721956f4 AM |
10128 | branch_offset = destination - location; |
10129 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10130 | |
721956f4 AM |
10131 | /* Determine if a long branch stub is needed. */ |
10132 | max_branch_offset = 1 << 25; | |
4ce794b7 | 10133 | if (r_type != R_PPC64_REL24) |
721956f4 | 10134 | max_branch_offset = 1 << 15; |
5d1634d7 | 10135 | |
6911b7dc | 10136 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10137 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10138 | is needed later. */ | |
10139 | return ppc_stub_long_branch; | |
5d1634d7 | 10140 | |
721956f4 | 10141 | return ppc_stub_none; |
5d1634d7 AM |
10142 | } |
10143 | ||
794e51c0 AM |
10144 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10145 | to update a plt entry in one thread and have another thread see a | |
10146 | stale zero toc entry. To avoid this we need some sort of acquire | |
10147 | barrier in the call stub. One solution is to make the load of the | |
10148 | toc word seem to appear to depend on the load of the function entry | |
10149 | word. Another solution is to test for r2 being zero, and branch to | |
10150 | the appropriate glink entry if so. | |
10151 | ||
10152 | . fake dep barrier compare | |
71a39c98 AM |
10153 | . ld 12,xxx(2) ld 12,xxx(2) |
10154 | . mtctr 12 mtctr 12 | |
10155 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10156 | . add 2,2,11 cmpldi 2,0 |
10157 | . ld 2,xxx+8(2) bnectr+ | |
10158 | . bctr b <glink_entry> | |
10159 | ||
10160 | The solution involving the compare turns out to be faster, so | |
10161 | that's what we use unless the branch won't reach. */ | |
10162 | ||
10163 | #define ALWAYS_USE_FAKE_DEP 0 | |
10164 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10165 | |
5d1634d7 AM |
10166 | #define PPC_LO(v) ((v) & 0xffff) |
10167 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10168 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10169 | ||
794e51c0 AM |
10170 | static inline unsigned int |
10171 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10172 | struct ppc_stub_hash_entry *stub_entry, | |
10173 | bfd_vma off) | |
10174 | { | |
b9e5796b AM |
10175 | unsigned size = 12; |
10176 | ||
10177 | if (ALWAYS_EMIT_R2SAVE | |
10178 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10179 | size += 4; | |
10180 | if (PPC_HA (off) != 0) | |
794e51c0 | 10181 | size += 4; |
b9e5796b AM |
10182 | if (htab->opd_abi) |
10183 | { | |
10184 | size += 4; | |
e7d1c40c | 10185 | if (htab->params->plt_static_chain) |
b9e5796b | 10186 | size += 4; |
e7d1c40c | 10187 | if (htab->params->plt_thread_safe) |
b9e5796b | 10188 | size += 8; |
e7d1c40c | 10189 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10190 | size += 4; |
10191 | } | |
794e51c0 AM |
10192 | if (stub_entry->h != NULL |
10193 | && (stub_entry->h == htab->tls_get_addr_fd | |
10194 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10195 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 AM |
10196 | size += 13 * 4; |
10197 | return size; | |
10198 | } | |
10199 | ||
10200 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
10201 | then return the padding needed to do so. */ | |
10202 | static inline unsigned int | |
10203 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10204 | struct ppc_stub_hash_entry *stub_entry, | |
10205 | bfd_vma plt_off) | |
10206 | { | |
e7d1c40c | 10207 | int stub_align = 1 << htab->params->plt_stub_align; |
794e51c0 AM |
10208 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
10209 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
10210 | ||
10211 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
10212 | > (stub_size & -stub_align)) | |
10213 | return stub_align - (stub_off & (stub_align - 1)); | |
10214 | return 0; | |
10215 | } | |
10216 | ||
10217 | /* Build a .plt call stub. */ | |
10218 | ||
10219 | static inline bfd_byte * | |
10220 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10221 | struct ppc_stub_hash_entry *stub_entry, | |
10222 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10223 | { | |
e7d1c40c | 10224 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10225 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c AM |
10226 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
10227 | bfd_boolean plt_thread_safe = htab->params->plt_thread_safe; | |
794e51c0 AM |
10228 | bfd_boolean use_fake_dep = plt_thread_safe; |
10229 | bfd_vma cmp_branch_off = 0; | |
10230 | ||
10231 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10232 | && plt_load_toc |
794e51c0 AM |
10233 | && plt_thread_safe |
10234 | && !(stub_entry->h != NULL | |
10235 | && (stub_entry->h == htab->tls_get_addr_fd | |
10236 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10237 | && !htab->params->no_tls_get_addr_opt)) |
794e51c0 AM |
10238 | { |
10239 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10240 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10241 | / PLT_ENTRY_SIZE (htab)); | |
794e51c0 AM |
10242 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
10243 | bfd_vma to, from; | |
10244 | ||
68d62958 AM |
10245 | if (pltindex > 32768) |
10246 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10247 | to = (glinkoff |
10248 | + htab->glink->output_offset | |
10249 | + htab->glink->output_section->vma); | |
10250 | from = (p - stub_entry->stub_sec->contents | |
10251 | + 4 * (ALWAYS_EMIT_R2SAVE | |
10252 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10253 | + 4 * (PPC_HA (offset) != 0) | |
10254 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10255 | != PPC_HA (offset)) | |
10256 | + 4 * (plt_static_chain != 0) | |
10257 | + 20 | |
10258 | + stub_entry->stub_sec->output_offset | |
10259 | + stub_entry->stub_sec->output_section->vma); | |
10260 | cmp_branch_off = to - from; | |
10261 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10262 | } | |
10263 | ||
ac2df442 AM |
10264 | if (PPC_HA (offset) != 0) |
10265 | { | |
176a0d42 AM |
10266 | if (r != NULL) |
10267 | { | |
794e51c0 AM |
10268 | if (ALWAYS_EMIT_R2SAVE |
10269 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10270 | r[0].r_offset += 4; | |
176a0d42 | 10271 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10272 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10273 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10274 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10275 | if (plt_load_toc) |
176a0d42 | 10276 | { |
b9e5796b | 10277 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10278 | { |
b9e5796b AM |
10279 | r[2].r_offset = r[1].r_offset + 4; |
10280 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10281 | r[2].r_addend = r[0].r_addend; | |
10282 | } | |
10283 | else | |
10284 | { | |
10285 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10286 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10287 | r[2].r_addend = r[0].r_addend + 8; | |
10288 | if (plt_static_chain) | |
10289 | { | |
10290 | r[3].r_offset = r[2].r_offset + 4; | |
10291 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10292 | r[3].r_addend = r[0].r_addend + 16; | |
10293 | } | |
c7131b65 | 10294 | } |
176a0d42 AM |
10295 | } |
10296 | } | |
794e51c0 AM |
10297 | if (ALWAYS_EMIT_R2SAVE |
10298 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10299 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10300 | if (plt_load_toc) |
10301 | { | |
10302 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10303 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10304 | } | |
10305 | else | |
10306 | { | |
10307 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10308 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10309 | } | |
b9e5796b AM |
10310 | if (plt_load_toc |
10311 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10312 | { |
71a39c98 | 10313 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10314 | offset = 0; |
10315 | } | |
71a39c98 | 10316 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10317 | if (plt_load_toc) |
794e51c0 | 10318 | { |
b9e5796b AM |
10319 | if (use_fake_dep) |
10320 | { | |
10321 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10322 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10323 | } | |
10324 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10325 | if (plt_static_chain) | |
10326 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10327 | } |
ac2df442 AM |
10328 | } |
10329 | else | |
10330 | { | |
176a0d42 AM |
10331 | if (r != NULL) |
10332 | { | |
794e51c0 AM |
10333 | if (ALWAYS_EMIT_R2SAVE |
10334 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10335 | r[0].r_offset += 4; | |
176a0d42 | 10336 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10337 | if (plt_load_toc) |
176a0d42 | 10338 | { |
b9e5796b | 10339 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10340 | { |
b9e5796b AM |
10341 | r[1].r_offset = r[0].r_offset + 4; |
10342 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10343 | r[1].r_addend = r[0].r_addend; | |
10344 | } | |
10345 | else | |
10346 | { | |
10347 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10348 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10349 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10350 | if (plt_static_chain) | |
10351 | { | |
10352 | r[2].r_offset = r[1].r_offset + 4; | |
10353 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10354 | r[2].r_addend = r[0].r_addend + 8; | |
10355 | } | |
c7131b65 | 10356 | } |
176a0d42 AM |
10357 | } |
10358 | } | |
794e51c0 AM |
10359 | if (ALWAYS_EMIT_R2SAVE |
10360 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10361 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10362 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10363 | if (plt_load_toc |
10364 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10365 | { |
10366 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10367 | offset = 0; | |
10368 | } | |
71a39c98 | 10369 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10370 | if (plt_load_toc) |
794e51c0 | 10371 | { |
b9e5796b AM |
10372 | if (use_fake_dep) |
10373 | { | |
10374 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
10375 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
10376 | } | |
10377 | if (plt_static_chain) | |
10378 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
10379 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 10380 | } |
ac2df442 | 10381 | } |
b9e5796b | 10382 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
10383 | { |
10384 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
10385 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 10386 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
10387 | } |
10388 | else | |
10389 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
5d1634d7 AM |
10390 | return p; |
10391 | } | |
10392 | ||
a7f2871e AM |
10393 | /* Build a special .plt call stub for __tls_get_addr. */ |
10394 | ||
10395 | #define LD_R11_0R3 0xe9630000 | |
10396 | #define LD_R12_0R3 0xe9830000 | |
10397 | #define MR_R0_R3 0x7c601b78 | |
10398 | #define CMPDI_R11_0 0x2c2b0000 | |
10399 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
10400 | #define BEQLR 0x4d820020 | |
10401 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
10402 | #define STD_R11_0R1 0xf9610000 |
10403 | #define BCTRL 0x4e800421 | |
10404 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
10405 | #define MTLR_R11 0x7d6803a6 |
10406 | ||
10407 | static inline bfd_byte * | |
794e51c0 AM |
10408 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
10409 | struct ppc_stub_hash_entry *stub_entry, | |
10410 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 10411 | { |
e7d1c40c | 10412 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 10413 | |
a7f2871e AM |
10414 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
10415 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
10416 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
10417 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
10418 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
10419 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
10420 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
10421 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
a078d95a | 10422 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
10423 | |
10424 | if (r != NULL) | |
10425 | r[0].r_offset += 9 * 4; | |
794e51c0 | 10426 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
a7f2871e AM |
10427 | bfd_put_32 (obfd, BCTRL, p - 4); |
10428 | ||
a078d95a AM |
10429 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
10430 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; | |
a7f2871e AM |
10431 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
10432 | bfd_put_32 (obfd, BLR, p), p += 4; | |
10433 | ||
10434 | return p; | |
10435 | } | |
10436 | ||
176a0d42 AM |
10437 | static Elf_Internal_Rela * |
10438 | get_relocs (asection *sec, int count) | |
10439 | { | |
10440 | Elf_Internal_Rela *relocs; | |
10441 | struct bfd_elf_section_data *elfsec_data; | |
10442 | ||
10443 | elfsec_data = elf_section_data (sec); | |
10444 | relocs = elfsec_data->relocs; | |
10445 | if (relocs == NULL) | |
10446 | { | |
10447 | bfd_size_type relsize; | |
10448 | relsize = sec->reloc_count * sizeof (*relocs); | |
10449 | relocs = bfd_alloc (sec->owner, relsize); | |
10450 | if (relocs == NULL) | |
10451 | return NULL; | |
10452 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
10453 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
10454 | sizeof (Elf_Internal_Shdr)); | |
10455 | if (elfsec_data->rela.hdr == NULL) | |
10456 | return NULL; | |
10457 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
10458 | * sizeof (Elf64_External_Rela)); | |
10459 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
10460 | sec->reloc_count = 0; |
10461 | } | |
10462 | relocs += sec->reloc_count; | |
10463 | sec->reloc_count += count; | |
10464 | return relocs; | |
10465 | } | |
10466 | ||
aa374f67 | 10467 | static bfd_vma |
25f53a85 | 10468 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
10469 | struct ppc_stub_hash_entry *stub_entry) |
10470 | { | |
25f53a85 | 10471 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
aa374f67 AM |
10472 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
10473 | ||
10474 | if (r2off == 0) | |
10475 | { | |
10476 | /* Support linking -R objects. Get the toc pointer from the | |
10477 | opd entry. */ | |
10478 | char buf[8]; | |
b9e5796b AM |
10479 | if (!htab->opd_abi) |
10480 | return r2off; | |
aa374f67 AM |
10481 | asection *opd = stub_entry->h->elf.root.u.def.section; |
10482 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
10483 | ||
10484 | if (strcmp (opd->name, ".opd") != 0 | |
10485 | || opd->reloc_count != 0) | |
10486 | { | |
bc30df16 | 10487 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
25f53a85 | 10488 | stub_entry->h->elf.root.root.string); |
aa374f67 AM |
10489 | bfd_set_error (bfd_error_bad_value); |
10490 | return 0; | |
10491 | } | |
10492 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
10493 | return 0; | |
10494 | r2off = bfd_get_64 (opd->owner, buf); | |
25f53a85 | 10495 | r2off -= elf_gp (info->output_bfd); |
aa374f67 AM |
10496 | } |
10497 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
10498 | return r2off; | |
10499 | } | |
10500 | ||
b34976b6 | 10501 | static bfd_boolean |
4ce794b7 | 10502 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 10503 | { |
721956f4 AM |
10504 | struct ppc_stub_hash_entry *stub_entry; |
10505 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
10506 | struct bfd_link_info *info; |
10507 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
10508 | bfd_byte *loc; |
10509 | bfd_byte *p; | |
ee75fd95 | 10510 | bfd_vma dest, off; |
721956f4 | 10511 | int size; |
176a0d42 | 10512 | Elf_Internal_Rela *r; |
e054468f | 10513 | asection *plt; |
5d1634d7 | 10514 | |
721956f4 AM |
10515 | /* Massage our args to the form they really have. */ |
10516 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 10517 | info = in_arg; |
5d1634d7 | 10518 | |
5d1634d7 | 10519 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
10520 | if (htab == NULL) |
10521 | return FALSE; | |
5d1634d7 | 10522 | |
721956f4 | 10523 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 10524 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 10525 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 10526 | |
4ce794b7 | 10527 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 10528 | switch (stub_entry->stub_type) |
5d1634d7 | 10529 | { |
721956f4 | 10530 | case ppc_stub_long_branch: |
ad8e1ba5 | 10531 | case ppc_stub_long_branch_r2off: |
721956f4 | 10532 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
10533 | dest = (stub_entry->target_value |
10534 | + stub_entry->target_section->output_offset | |
10535 | + stub_entry->target_section->output_section->vma); | |
10536 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
10537 | off = dest; | |
5d1634d7 | 10538 | |
721956f4 AM |
10539 | /* And this is where we are coming from. */ |
10540 | off -= (stub_entry->stub_offset | |
97b639ba AM |
10541 | + stub_entry->stub_sec->output_offset |
10542 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 10543 | |
ac2df442 AM |
10544 | size = 4; |
10545 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 10546 | { |
25f53a85 | 10547 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 10548 | |
aa374f67 AM |
10549 | if (r2off == 0) |
10550 | { | |
10551 | htab->stub_error = TRUE; | |
10552 | return FALSE; | |
10553 | } | |
e7d1c40c | 10554 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10555 | loc += 4; |
ac2df442 AM |
10556 | size = 12; |
10557 | if (PPC_HA (r2off) != 0) | |
10558 | { | |
10559 | size = 16; | |
e7d1c40c AM |
10560 | bfd_put_32 (htab->params->stub_bfd, |
10561 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
ac2df442 AM |
10562 | loc += 4; |
10563 | } | |
e7d1c40c | 10564 | bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 10565 | loc += 4; |
ac2df442 | 10566 | off -= size - 4; |
ad8e1ba5 | 10567 | } |
e7d1c40c | 10568 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 10569 | |
5c3dead3 AM |
10570 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10571 | { | |
bc30df16 AM |
10572 | info->callbacks->einfo |
10573 | (_("%P: long branch stub `%s' offset overflow\n"), | |
10574 | stub_entry->root.string); | |
5c3dead3 AM |
10575 | htab->stub_error = TRUE; |
10576 | return FALSE; | |
10577 | } | |
ee75fd95 AM |
10578 | |
10579 | if (info->emitrelocations) | |
10580 | { | |
176a0d42 AM |
10581 | r = get_relocs (stub_entry->stub_sec, 1); |
10582 | if (r == NULL) | |
10583 | return FALSE; | |
ee75fd95 AM |
10584 | r->r_offset = loc - stub_entry->stub_sec->contents; |
10585 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
10586 | r->r_addend = dest; | |
10587 | if (stub_entry->h != NULL) | |
10588 | { | |
10589 | struct elf_link_hash_entry **hashes; | |
10590 | unsigned long symndx; | |
10591 | struct ppc_link_hash_entry *h; | |
10592 | ||
e7d1c40c | 10593 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
10594 | if (hashes == NULL) |
10595 | { | |
10596 | bfd_size_type hsize; | |
10597 | ||
10598 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 10599 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
10600 | if (hashes == NULL) |
10601 | return FALSE; | |
e7d1c40c | 10602 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
10603 | htab->stub_globals = 1; |
10604 | } | |
10605 | symndx = htab->stub_globals++; | |
10606 | h = stub_entry->h; | |
10607 | hashes[symndx] = &h->elf; | |
10608 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
10609 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 10610 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
10611 | if (h->elf.root.u.def.section != stub_entry->target_section) |
10612 | /* H is an opd symbol. The addend must be zero. */ | |
10613 | r->r_addend = 0; | |
10614 | else | |
10615 | { | |
10616 | off = (h->elf.root.u.def.value | |
10617 | + h->elf.root.u.def.section->output_offset | |
10618 | + h->elf.root.u.def.section->output_section->vma); | |
10619 | r->r_addend -= off; | |
10620 | } | |
10621 | } | |
10622 | } | |
721956f4 | 10623 | break; |
e86ce104 | 10624 | |
721956f4 | 10625 | case ppc_stub_plt_branch: |
ad8e1ba5 | 10626 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
10627 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
10628 | stub_entry->root.string + 9, | |
b34976b6 | 10629 | FALSE, FALSE); |
721956f4 AM |
10630 | if (br_entry == NULL) |
10631 | { | |
8de848d8 | 10632 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 10633 | stub_entry->root.string); |
b34976b6 AM |
10634 | htab->stub_error = TRUE; |
10635 | return FALSE; | |
721956f4 AM |
10636 | } |
10637 | ||
176a0d42 AM |
10638 | dest = (stub_entry->target_value |
10639 | + stub_entry->target_section->output_offset | |
10640 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
10641 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10642 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 10643 | |
176a0d42 | 10644 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 10645 | htab->brlt->contents + br_entry->offset); |
721956f4 | 10646 | |
f94498ff | 10647 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 10648 | { |
f94498ff | 10649 | br_entry->iter = 0; |
84f5d08e | 10650 | |
f94498ff | 10651 | if (htab->relbrlt != NULL) |
84f5d08e | 10652 | { |
f94498ff AM |
10653 | /* Create a reloc for the branch lookup table entry. */ |
10654 | Elf_Internal_Rela rela; | |
10655 | bfd_byte *rl; | |
10656 | ||
10657 | rela.r_offset = (br_entry->offset | |
10658 | + htab->brlt->output_offset | |
10659 | + htab->brlt->output_section->vma); | |
10660 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10661 | rela.r_addend = dest; |
f94498ff AM |
10662 | |
10663 | rl = htab->relbrlt->contents; | |
10664 | rl += (htab->relbrlt->reloc_count++ | |
10665 | * sizeof (Elf64_External_Rela)); | |
10666 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
10667 | } | |
10668 | else if (info->emitrelocations) | |
10669 | { | |
176a0d42 AM |
10670 | r = get_relocs (htab->brlt, 1); |
10671 | if (r == NULL) | |
10672 | return FALSE; | |
10673 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
10674 | normal reloc processing. Symbols and offsets are not | |
10675 | translated from input file to output file form, so | |
10676 | set up the offset per the output file. */ | |
f94498ff AM |
10677 | r->r_offset = (br_entry->offset |
10678 | + htab->brlt->output_offset | |
10679 | + htab->brlt->output_section->vma); | |
10680 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 10681 | r->r_addend = dest; |
84f5d08e | 10682 | } |
84f5d08e | 10683 | } |
721956f4 | 10684 | |
176a0d42 AM |
10685 | dest = (br_entry->offset |
10686 | + htab->brlt->output_offset | |
10687 | + htab->brlt->output_section->vma); | |
10688 | ||
10689 | off = (dest | |
4ce794b7 | 10690 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 10691 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10692 | |
ad8e1ba5 | 10693 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 10694 | { |
25f53a85 | 10695 | info->callbacks->einfo |
bc30df16 | 10696 | (_("%P: linkage table error against `%T'\n"), |
721956f4 | 10697 | stub_entry->root.string); |
5d1634d7 | 10698 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10699 | htab->stub_error = TRUE; |
10700 | return FALSE; | |
5d1634d7 | 10701 | } |
41bd81ab | 10702 | |
176a0d42 AM |
10703 | if (info->emitrelocations) |
10704 | { | |
10705 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
10706 | if (r == NULL) | |
10707 | return FALSE; | |
10708 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10709 | if (bfd_big_endian (info->output_bfd)) |
10710 | r[0].r_offset += 2; | |
00f412ee | 10711 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
10712 | r[0].r_offset += 4; |
10713 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10714 | r[0].r_addend = dest; | |
10715 | if (PPC_HA (off) != 0) | |
10716 | { | |
10717 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
10718 | r[1].r_offset = r[0].r_offset + 4; | |
10719 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10720 | r[1].r_addend = r[0].r_addend; | |
10721 | } | |
10722 | } | |
10723 | ||
00f412ee | 10724 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 10725 | { |
176a0d42 | 10726 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10727 | { |
10728 | size = 16; | |
e7d1c40c | 10729 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10730 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10731 | loc += 4; |
e7d1c40c | 10732 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10733 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10734 | } |
10735 | else | |
10736 | { | |
10737 | size = 12; | |
e7d1c40c AM |
10738 | bfd_put_32 (htab->params->stub_bfd, |
10739 | LD_R12_0R2 | PPC_LO (off), loc); | |
ac2df442 | 10740 | } |
ad8e1ba5 AM |
10741 | } |
10742 | else | |
10743 | { | |
25f53a85 | 10744 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 10745 | |
00f412ee | 10746 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
10747 | { |
10748 | htab->stub_error = TRUE; | |
10749 | return FALSE; | |
10750 | } | |
ad8e1ba5 | 10751 | |
e7d1c40c | 10752 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
ad8e1ba5 | 10753 | loc += 4; |
00f412ee | 10754 | size = 16; |
176a0d42 | 10755 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10756 | { |
10757 | size += 4; | |
e7d1c40c | 10758 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10759 | ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 10760 | loc += 4; |
e7d1c40c | 10761 | bfd_put_32 (htab->params->stub_bfd, |
397998fc | 10762 | LD_R12_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
10763 | } |
10764 | else | |
e7d1c40c | 10765 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
10766 | |
10767 | if (PPC_HA (r2off) != 0) | |
10768 | { | |
10769 | size += 4; | |
00f412ee | 10770 | loc += 4; |
e7d1c40c AM |
10771 | bfd_put_32 (htab->params->stub_bfd, |
10772 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
00f412ee AM |
10773 | } |
10774 | if (PPC_LO (r2off) != 0) | |
10775 | { | |
10776 | size += 4; | |
ac2df442 | 10777 | loc += 4; |
e7d1c40c AM |
10778 | bfd_put_32 (htab->params->stub_bfd, |
10779 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
ac2df442 | 10780 | } |
ad8e1ba5 AM |
10781 | } |
10782 | loc += 4; | |
e7d1c40c | 10783 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
ad8e1ba5 | 10784 | loc += 4; |
e7d1c40c | 10785 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
721956f4 | 10786 | break; |
5d1634d7 | 10787 | |
721956f4 | 10788 | case ppc_stub_plt_call: |
794e51c0 | 10789 | case ppc_stub_plt_call_r2save: |
e054468f | 10790 | if (stub_entry->h != NULL |
b31867b6 AM |
10791 | && stub_entry->h->is_func_descriptor |
10792 | && stub_entry->h->oh != NULL) | |
c862ae31 | 10793 | { |
b31867b6 AM |
10794 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
10795 | ||
10796 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
10797 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
10798 | FIXME: We used to define the symbol on one of the call | |
10799 | stubs instead, which is why we test symbol section id | |
10800 | against htab->top_id in various places. Likely all | |
10801 | these checks could now disappear. */ | |
10802 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
10803 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
10804 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
10805 | fh->was_undefined = 0; | |
c862ae31 AM |
10806 | } |
10807 | ||
721956f4 | 10808 | /* Now build the stub. */ |
e054468f | 10809 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 10810 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
10811 | abort (); |
10812 | ||
33e44f2e | 10813 | plt = htab->elf.splt; |
25f23106 AM |
10814 | if (!htab->elf.dynamic_sections_created |
10815 | || stub_entry->h == NULL | |
10816 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10817 | plt = htab->elf.iplt; |
e054468f AM |
10818 | |
10819 | dest += plt->output_offset + plt->output_section->vma; | |
10820 | ||
10821 | if (stub_entry->h == NULL | |
10822 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
10823 | { | |
10824 | Elf_Internal_Rela rela; | |
10825 | bfd_byte *rl; | |
10826 | ||
10827 | rela.r_offset = dest; | |
ee67d69a AM |
10828 | if (htab->opd_abi) |
10829 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
10830 | else | |
10831 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
10832 | rela.r_addend = (stub_entry->target_value |
10833 | + stub_entry->target_section->output_offset | |
10834 | + stub_entry->target_section->output_section->vma); | |
10835 | ||
33e44f2e AM |
10836 | rl = (htab->elf.irelplt->contents |
10837 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 AM |
10838 | * sizeof (Elf64_External_Rela))); |
10839 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
10840 | stub_entry->plt_ent->plt.offset |= 1; |
10841 | } | |
176a0d42 AM |
10842 | |
10843 | off = (dest | |
e054468f | 10844 | - elf_gp (plt->output_section->owner) |
176a0d42 | 10845 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10846 | |
ad8e1ba5 | 10847 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 10848 | { |
25f53a85 | 10849 | info->callbacks->einfo |
bc30df16 | 10850 | (_("%P: linkage table error against `%T'\n"), |
e054468f AM |
10851 | stub_entry->h != NULL |
10852 | ? stub_entry->h->elf.root.root.string | |
10853 | : "<local sym>"); | |
721956f4 | 10854 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
10855 | htab->stub_error = TRUE; |
10856 | return FALSE; | |
721956f4 AM |
10857 | } |
10858 | ||
e7d1c40c | 10859 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
10860 | { |
10861 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
10862 | ||
10863 | stub_entry->stub_sec->size += pad; | |
10864 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
10865 | loc += pad; | |
10866 | } | |
10867 | ||
176a0d42 AM |
10868 | r = NULL; |
10869 | if (info->emitrelocations) | |
10870 | { | |
10871 | r = get_relocs (stub_entry->stub_sec, | |
3ba720c7 AM |
10872 | ((PPC_HA (off) != 0) |
10873 | + (htab->opd_abi | |
e7d1c40c | 10874 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
10875 | && PPC_HA (off + 16) == PPC_HA (off)) |
10876 | : 1))); | |
176a0d42 AM |
10877 | if (r == NULL) |
10878 | return FALSE; | |
10879 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
10880 | if (bfd_big_endian (info->output_bfd)) |
10881 | r[0].r_offset += 2; | |
176a0d42 AM |
10882 | r[0].r_addend = dest; |
10883 | } | |
a7f2871e AM |
10884 | if (stub_entry->h != NULL |
10885 | && (stub_entry->h == htab->tls_get_addr_fd | |
10886 | || stub_entry->h == htab->tls_get_addr) | |
e7d1c40c | 10887 | && !htab->params->no_tls_get_addr_opt) |
794e51c0 | 10888 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 10889 | else |
794e51c0 | 10890 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
10891 | size = p - loc; |
10892 | break; | |
10893 | ||
10894 | default: | |
10895 | BFD_FAIL (); | |
b34976b6 | 10896 | return FALSE; |
721956f4 AM |
10897 | } |
10898 | ||
eea6121a | 10899 | stub_entry->stub_sec->size += size; |
97b639ba | 10900 | |
e7d1c40c | 10901 | if (htab->params->emit_stub_syms) |
97b639ba AM |
10902 | { |
10903 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
10904 | size_t len1, len2; |
10905 | char *name; | |
10906 | const char *const stub_str[] = { "long_branch", | |
10907 | "long_branch_r2off", | |
10908 | "plt_branch", | |
10909 | "plt_branch_r2off", | |
794e51c0 | 10910 | "plt_call", |
ee75fd95 AM |
10911 | "plt_call" }; |
10912 | ||
10913 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
10914 | len2 = strlen (stub_entry->root.string); | |
10915 | name = bfd_malloc (len1 + len2 + 2); | |
10916 | if (name == NULL) | |
10917 | return FALSE; | |
10918 | memcpy (name, stub_entry->root.string, 9); | |
10919 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10920 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10921 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10922 | if (h == NULL) |
10923 | return FALSE; | |
10924 | if (h->root.type == bfd_link_hash_new) | |
10925 | { | |
10926 | h->root.type = bfd_link_hash_defined; | |
10927 | h->root.u.def.section = stub_entry->stub_sec; | |
10928 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
10929 | h->ref_regular = 1; |
10930 | h->def_regular = 1; | |
10931 | h->ref_regular_nonweak = 1; | |
10932 | h->forced_local = 1; | |
10933 | h->non_elf = 0; | |
97b639ba AM |
10934 | } |
10935 | } | |
10936 | ||
b34976b6 | 10937 | return TRUE; |
721956f4 AM |
10938 | } |
10939 | ||
10940 | /* As above, but don't actually build the stub. Just bump offset so | |
10941 | we know stub section sizes, and select plt_branch stubs where | |
10942 | long_branch stubs won't do. */ | |
10943 | ||
b34976b6 | 10944 | static bfd_boolean |
4ce794b7 | 10945 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10946 | { |
10947 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10948 | struct bfd_link_info *info; |
721956f4 AM |
10949 | struct ppc_link_hash_table *htab; |
10950 | bfd_vma off; | |
10951 | int size; | |
10952 | ||
10953 | /* Massage our args to the form they really have. */ | |
10954 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10955 | info = in_arg; |
10956 | ||
10957 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10958 | if (htab == NULL) |
10959 | return FALSE; | |
721956f4 | 10960 | |
794e51c0 AM |
10961 | if (stub_entry->stub_type == ppc_stub_plt_call |
10962 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 10963 | { |
e054468f AM |
10964 | asection *plt; |
10965 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 10966 | if (off >= (bfd_vma) -2) |
411e1bfb | 10967 | abort (); |
33e44f2e | 10968 | plt = htab->elf.splt; |
25f23106 AM |
10969 | if (!htab->elf.dynamic_sections_created |
10970 | || stub_entry->h == NULL | |
10971 | || stub_entry->h->elf.dynindx == -1) | |
33e44f2e | 10972 | plt = htab->elf.iplt; |
e054468f AM |
10973 | off += (plt->output_offset |
10974 | + plt->output_section->vma | |
10975 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 10976 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10977 | |
794e51c0 | 10978 | size = plt_stub_size (htab, stub_entry, off); |
e7d1c40c | 10979 | if (htab->params->plt_stub_align) |
794e51c0 | 10980 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
10981 | if (info->emitrelocations) |
10982 | { | |
10983 | stub_entry->stub_sec->reloc_count | |
b9e5796b AM |
10984 | += ((PPC_HA (off) != 0) |
10985 | + (htab->opd_abi | |
e7d1c40c | 10986 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
10987 | && PPC_HA (off + 16) == PPC_HA (off)) |
10988 | : 1)); | |
176a0d42 AM |
10989 | stub_entry->stub_sec->flags |= SEC_RELOC; |
10990 | } | |
721956f4 AM |
10991 | } |
10992 | else | |
10993 | { | |
ad8e1ba5 AM |
10994 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
10995 | variants. */ | |
ac2df442 | 10996 | bfd_vma r2off = 0; |
6911b7dc | 10997 | bfd_vma local_off = 0; |
ac2df442 | 10998 | |
721956f4 AM |
10999 | off = (stub_entry->target_value |
11000 | + stub_entry->target_section->output_offset | |
11001 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 11002 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
11003 | + stub_entry->stub_sec->output_offset |
11004 | + stub_entry->stub_sec->output_section->vma); | |
11005 | ||
ad8e1ba5 AM |
11006 | /* Reset the stub type from the plt variant in case we now |
11007 | can reach with a shorter stub. */ | |
11008 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11009 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11010 | ||
11011 | size = 4; | |
11012 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11013 | { | |
25f53a85 | 11014 | r2off = get_r2off (info, stub_entry); |
b9e5796b | 11015 | if (r2off == 0 && htab->opd_abi) |
aa374f67 AM |
11016 | { |
11017 | htab->stub_error = TRUE; | |
11018 | return FALSE; | |
11019 | } | |
ac2df442 AM |
11020 | size = 12; |
11021 | if (PPC_HA (r2off) != 0) | |
11022 | size = 16; | |
11023 | off -= size - 4; | |
ad8e1ba5 AM |
11024 | } |
11025 | ||
6911b7dc AM |
11026 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11027 | ||
b9e5796b AM |
11028 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
11029 | Do the same for -R objects without function descriptors. */ | |
11030 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11031 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
11032 | && r2off == 0)) | |
721956f4 AM |
11033 | { |
11034 | struct ppc_branch_hash_entry *br_entry; | |
11035 | ||
11036 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11037 | stub_entry->root.string + 9, | |
b34976b6 | 11038 | TRUE, FALSE); |
721956f4 AM |
11039 | if (br_entry == NULL) |
11040 | { | |
8de848d8 | 11041 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 11042 | stub_entry->root.string); |
b34976b6 AM |
11043 | htab->stub_error = TRUE; |
11044 | return FALSE; | |
721956f4 AM |
11045 | } |
11046 | ||
11047 | if (br_entry->iter != htab->stub_iteration) | |
11048 | { | |
11049 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11050 | br_entry->offset = htab->brlt->size; |
11051 | htab->brlt->size += 8; | |
63bc6f6c | 11052 | |
ee75fd95 | 11053 | if (htab->relbrlt != NULL) |
eea6121a | 11054 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11055 | else if (info->emitrelocations) |
11056 | { | |
11057 | htab->brlt->reloc_count += 1; | |
11058 | htab->brlt->flags |= SEC_RELOC; | |
11059 | } | |
721956f4 | 11060 | } |
ad8e1ba5 AM |
11061 | |
11062 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11063 | off = (br_entry->offset |
11064 | + htab->brlt->output_offset | |
11065 | + htab->brlt->output_section->vma | |
11066 | - elf_gp (htab->brlt->output_section->owner) | |
11067 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
11068 | ||
176a0d42 AM |
11069 | if (info->emitrelocations) |
11070 | { | |
11071 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
11072 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
11073 | } | |
11074 | ||
00f412ee | 11075 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11076 | { |
11077 | size = 12; | |
176a0d42 | 11078 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11079 | size = 16; |
11080 | } | |
11081 | else | |
11082 | { | |
00f412ee | 11083 | size = 16; |
176a0d42 | 11084 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11085 | size += 4; |
11086 | ||
11087 | if (PPC_HA (r2off) != 0) | |
11088 | size += 4; | |
00f412ee AM |
11089 | if (PPC_LO (r2off) != 0) |
11090 | size += 4; | |
ac2df442 | 11091 | } |
721956f4 | 11092 | } |
84f5d08e AM |
11093 | else if (info->emitrelocations) |
11094 | { | |
11095 | stub_entry->stub_sec->reloc_count += 1; | |
11096 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
11097 | } | |
721956f4 AM |
11098 | } |
11099 | ||
eea6121a | 11100 | stub_entry->stub_sec->size += size; |
b34976b6 | 11101 | return TRUE; |
721956f4 AM |
11102 | } |
11103 | ||
11104 | /* Set up various things so that we can make a list of input sections | |
11105 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11106 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11107 | |
11108 | int | |
e7d1c40c | 11109 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 AM |
11110 | { |
11111 | bfd *input_bfd; | |
734b6cf9 | 11112 | int top_id, top_index, id; |
721956f4 | 11113 | asection *section; |
734b6cf9 | 11114 | asection **input_list; |
721956f4 AM |
11115 | bfd_size_type amt; |
11116 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11117 | ||
4dfe6ac6 NC |
11118 | if (htab == NULL) |
11119 | return -1; | |
4c52953f | 11120 | |
1e2f5b6e | 11121 | /* Find the top input section id. */ |
3d6f9012 | 11122 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 | 11123 | input_bfd != NULL; |
c72f2fb2 | 11124 | input_bfd = input_bfd->link.next) |
721956f4 | 11125 | { |
721956f4 AM |
11126 | for (section = input_bfd->sections; |
11127 | section != NULL; | |
11128 | section = section->next) | |
11129 | { | |
11130 | if (top_id < section->id) | |
11131 | top_id = section->id; | |
11132 | } | |
11133 | } | |
721956f4 | 11134 | |
8f3bab57 | 11135 | htab->top_id = top_id; |
721956f4 | 11136 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 11137 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
11138 | if (htab->stub_group == NULL) |
11139 | return -1; | |
11140 | ||
3d6f9012 AM |
11141 | /* Set toc_off for com, und, abs and ind sections. */ |
11142 | for (id = 0; id < 3; id++) | |
11143 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 11144 | |
734b6cf9 AM |
11145 | /* We can't use output_bfd->section_count here to find the top output |
11146 | section index as some sections may have been removed, and | |
8423293d | 11147 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 11148 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
11149 | section != NULL; |
11150 | section = section->next) | |
11151 | { | |
11152 | if (top_index < section->index) | |
11153 | top_index = section->index; | |
11154 | } | |
11155 | ||
11156 | htab->top_index = top_index; | |
11157 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 11158 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
11159 | htab->input_list = input_list; |
11160 | if (input_list == NULL) | |
11161 | return -1; | |
11162 | ||
721956f4 AM |
11163 | return 1; |
11164 | } | |
11165 | ||
927be08e AM |
11166 | /* Set up for first pass at multitoc partitioning. */ |
11167 | ||
11168 | void | |
11169 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11170 | { | |
11171 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11172 | ||
1c865ab2 | 11173 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11174 | htab->toc_bfd = NULL; |
11175 | htab->toc_first_sec = NULL; | |
11176 | } | |
11177 | ||
e717da7e AM |
11178 | /* The linker repeatedly calls this function for each TOC input section |
11179 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11180 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11181 | |
927be08e | 11182 | bfd_boolean |
4ce794b7 | 11183 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11184 | { |
11185 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11186 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11187 | |
4dfe6ac6 NC |
11188 | if (htab == NULL) |
11189 | return FALSE; | |
11190 | ||
927be08e | 11191 | if (!htab->second_toc_pass) |
4c52953f | 11192 | { |
927be08e | 11193 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11194 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11195 | ||
11196 | if (new_bfd) | |
bf102f86 AM |
11197 | { |
11198 | htab->toc_bfd = isec->owner; | |
11199 | htab->toc_first_sec = isec; | |
11200 | } | |
927be08e | 11201 | |
bf102f86 AM |
11202 | addr = isec->output_offset + isec->output_section->vma; |
11203 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11204 | limit = 0x80008000; |
11205 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11206 | limit = 0x10000; | |
11207 | if (off + isec->size > limit) | |
bf102f86 AM |
11208 | { |
11209 | addr = (htab->toc_first_sec->output_offset | |
11210 | + htab->toc_first_sec->output_section->vma); | |
11211 | htab->toc_curr = addr; | |
11212 | } | |
99877b66 | 11213 | |
927be08e AM |
11214 | /* toc_curr is the base address of this toc group. Set elf_gp |
11215 | for the input section to be the offset relative to the | |
11216 | output toc base plus 0x8000. Making the input elf_gp an | |
11217 | offset allows us to move the toc as a whole without | |
11218 | recalculating input elf_gp. */ | |
11219 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
11220 | off += TOC_BASE_OFF; | |
11221 | ||
11222 | /* Die if someone uses a linker script that doesn't keep input | |
11223 | file .toc and .got together. */ | |
a4fd3de5 AM |
11224 | if (new_bfd |
11225 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11226 | && elf_gp (isec->owner) != off) |
11227 | return FALSE; | |
11228 | ||
11229 | elf_gp (isec->owner) = off; | |
11230 | return TRUE; | |
4c52953f | 11231 | } |
927be08e AM |
11232 | |
11233 | /* During the second pass toc_first_sec points to the start of | |
11234 | a toc group, and toc_curr is used to track the old elf_gp. | |
11235 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11236 | if (htab->toc_bfd == isec->owner) | |
11237 | return TRUE; | |
11238 | htab->toc_bfd = isec->owner; | |
11239 | ||
11240 | if (htab->toc_first_sec == NULL | |
11241 | || htab->toc_curr != elf_gp (isec->owner)) | |
11242 | { | |
11243 | htab->toc_curr = elf_gp (isec->owner); | |
11244 | htab->toc_first_sec = isec; | |
11245 | } | |
11246 | addr = (htab->toc_first_sec->output_offset | |
11247 | + htab->toc_first_sec->output_section->vma); | |
11248 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
11249 | elf_gp (isec->owner) = off; | |
11250 | ||
11251 | return TRUE; | |
ad8e1ba5 AM |
11252 | } |
11253 | ||
927be08e AM |
11254 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11255 | symbol H. */ | |
11256 | ||
11257 | static bfd_boolean | |
11258 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11259 | { | |
11260 | if (h->root.type == bfd_link_hash_indirect) | |
11261 | return TRUE; | |
11262 | ||
927be08e AM |
11263 | merge_got_entries (&h->got.glist); |
11264 | ||
11265 | return TRUE; | |
11266 | } | |
11267 | ||
11268 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11269 | symbol H. */ | |
11270 | ||
11271 | static bfd_boolean | |
11272 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11273 | { | |
11274 | struct got_entry *gent; | |
11275 | ||
11276 | if (h->root.type == bfd_link_hash_indirect) | |
11277 | return TRUE; | |
11278 | ||
927be08e AM |
11279 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11280 | if (!gent->is_indirect) | |
11281 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11282 | return TRUE; | |
11283 | } | |
11284 | ||
11285 | /* Called on the first multitoc pass after the last call to | |
11286 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11287 | entries. */ | |
11288 | ||
11289 | bfd_boolean | |
11290 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11291 | { |
11292 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11293 | struct bfd *ibfd, *ibfd2; |
11294 | bfd_boolean done_something; | |
11295 | ||
11296 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11297 | |
7865406b AM |
11298 | if (!htab->do_multi_toc) |
11299 | return FALSE; | |
11300 | ||
d0fae19d | 11301 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11302 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11303 | ||
11304 | /* And tlsld_got. */ | |
c72f2fb2 | 11305 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11306 | { |
11307 | struct got_entry *ent, *ent2; | |
11308 | ||
11309 | if (!is_ppc64_elf (ibfd)) | |
11310 | continue; | |
11311 | ||
11312 | ent = ppc64_tlsld_got (ibfd); | |
11313 | if (!ent->is_indirect | |
11314 | && ent->got.offset != (bfd_vma) -1) | |
11315 | { | |
c72f2fb2 | 11316 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11317 | { |
11318 | if (!is_ppc64_elf (ibfd2)) | |
11319 | continue; | |
11320 | ||
11321 | ent2 = ppc64_tlsld_got (ibfd2); | |
11322 | if (!ent2->is_indirect | |
11323 | && ent2->got.offset != (bfd_vma) -1 | |
11324 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11325 | { | |
11326 | ent2->is_indirect = TRUE; | |
11327 | ent2->got.ent = ent; | |
11328 | } | |
11329 | } | |
11330 | } | |
11331 | } | |
11332 | ||
11333 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11334 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11335 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11336 | htab->got_reli_size = 0; |
11337 | ||
c72f2fb2 | 11338 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11339 | { |
11340 | asection *got, *relgot; | |
11341 | ||
11342 | if (!is_ppc64_elf (ibfd)) | |
11343 | continue; | |
11344 | ||
11345 | got = ppc64_elf_tdata (ibfd)->got; | |
11346 | if (got != NULL) | |
11347 | { | |
11348 | got->rawsize = got->size; | |
11349 | got->size = 0; | |
11350 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11351 | relgot->rawsize = relgot->size; | |
11352 | relgot->size = 0; | |
11353 | } | |
11354 | } | |
11355 | ||
11356 | /* Now reallocate the got, local syms first. We don't need to | |
11357 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11358 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11359 | { |
11360 | struct got_entry **lgot_ents; | |
11361 | struct got_entry **end_lgot_ents; | |
11362 | struct plt_entry **local_plt; | |
11363 | struct plt_entry **end_local_plt; | |
f961d9dd | 11364 | unsigned char *lgot_masks; |
927be08e AM |
11365 | bfd_size_type locsymcount; |
11366 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11367 | asection *s; |
927be08e AM |
11368 | |
11369 | if (!is_ppc64_elf (ibfd)) | |
11370 | continue; | |
11371 | ||
11372 | lgot_ents = elf_local_got_ents (ibfd); | |
11373 | if (!lgot_ents) | |
11374 | continue; | |
11375 | ||
11376 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11377 | locsymcount = symtab_hdr->sh_info; | |
11378 | end_lgot_ents = lgot_ents + locsymcount; | |
11379 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11380 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11381 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11382 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11383 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11384 | { | |
11385 | struct got_entry *ent; | |
11386 | ||
11387 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11388 | { |
19e08130 AM |
11389 | unsigned int ent_size = 8; |
11390 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
11391 | ||
d0fae19d AM |
11392 | ent->got.offset = s->size; |
11393 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 11394 | { |
19e08130 AM |
11395 | ent_size *= 2; |
11396 | rel_size *= 2; | |
11397 | } | |
11398 | s->size += ent_size; | |
11399 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
11400 | { | |
33e44f2e | 11401 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
11402 | htab->got_reli_size += rel_size; |
11403 | } | |
11404 | else if (info->shared) | |
11405 | { | |
11406 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11407 | srel->size += rel_size; | |
d0fae19d AM |
11408 | } |
11409 | } | |
927be08e AM |
11410 | } |
11411 | } | |
11412 | ||
11413 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
11414 | ||
c72f2fb2 | 11415 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11416 | { |
11417 | struct got_entry *ent; | |
11418 | ||
11419 | if (!is_ppc64_elf (ibfd)) | |
11420 | continue; | |
11421 | ||
11422 | ent = ppc64_tlsld_got (ibfd); | |
11423 | if (!ent->is_indirect | |
11424 | && ent->got.offset != (bfd_vma) -1) | |
11425 | { | |
11426 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
11427 | ent->got.offset = s->size; | |
11428 | s->size += 16; | |
11429 | if (info->shared) | |
11430 | { | |
11431 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
11432 | srel->size += sizeof (Elf64_External_Rela); | |
11433 | } | |
11434 | } | |
11435 | } | |
11436 | ||
33e44f2e | 11437 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 11438 | if (!done_something) |
c72f2fb2 | 11439 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11440 | { |
11441 | asection *got; | |
11442 | ||
11443 | if (!is_ppc64_elf (ibfd)) | |
11444 | continue; | |
11445 | ||
11446 | got = ppc64_elf_tdata (ibfd)->got; | |
11447 | if (got != NULL) | |
11448 | { | |
11449 | done_something = got->rawsize != got->size; | |
11450 | if (done_something) | |
11451 | break; | |
11452 | } | |
11453 | } | |
11454 | ||
11455 | if (done_something) | |
e7d1c40c | 11456 | (*htab->params->layout_sections_again) (); |
927be08e AM |
11457 | |
11458 | /* Set up for second pass over toc sections to recalculate elf_gp | |
11459 | on input sections. */ | |
11460 | htab->toc_bfd = NULL; | |
11461 | htab->toc_first_sec = NULL; | |
11462 | htab->second_toc_pass = TRUE; | |
11463 | return done_something; | |
11464 | } | |
11465 | ||
11466 | /* Called after second pass of multitoc partitioning. */ | |
11467 | ||
11468 | void | |
11469 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
11470 | { | |
11471 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11472 | ||
11473 | /* After the second pass, toc_curr tracks the TOC offset used | |
11474 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 11475 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
11476 | } |
11477 | ||
9b5ecbd0 AM |
11478 | /* No toc references were found in ISEC. If the code in ISEC makes no |
11479 | calls, then there's no need to use toc adjusting stubs when branching | |
11480 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
11481 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
11482 | needed, and 2 if a cyclical call-graph was found but no other reason | |
11483 | for a stub was detected. If called from the top level, a return of | |
11484 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
11485 | |
11486 | static int | |
4ce794b7 | 11487 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 11488 | { |
9b5ecbd0 | 11489 | int ret; |
70cc837d AM |
11490 | |
11491 | /* Mark this section as checked. */ | |
11492 | isec->call_check_done = 1; | |
9b5ecbd0 | 11493 | |
772119ce AM |
11494 | /* We know none of our code bearing sections will need toc stubs. */ |
11495 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
11496 | return 0; | |
11497 | ||
eea6121a | 11498 | if (isec->size == 0) |
082c50f8 AM |
11499 | return 0; |
11500 | ||
4c52953f AM |
11501 | if (isec->output_section == NULL) |
11502 | return 0; | |
11503 | ||
4c52953f | 11504 | ret = 0; |
70cc837d | 11505 | if (isec->reloc_count != 0) |
9b5ecbd0 | 11506 | { |
70cc837d AM |
11507 | Elf_Internal_Rela *relstart, *rel; |
11508 | Elf_Internal_Sym *local_syms; | |
11509 | struct ppc_link_hash_table *htab; | |
2917689a | 11510 | |
70cc837d AM |
11511 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
11512 | info->keep_memory); | |
11513 | if (relstart == NULL) | |
11514 | return -1; | |
90aecf7a | 11515 | |
70cc837d AM |
11516 | /* Look for branches to outside of this section. */ |
11517 | local_syms = NULL; | |
11518 | htab = ppc_hash_table (info); | |
11519 | if (htab == NULL) | |
11520 | return -1; | |
4c52953f | 11521 | |
70cc837d | 11522 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 11523 | { |
70cc837d AM |
11524 | enum elf_ppc64_reloc_type r_type; |
11525 | unsigned long r_symndx; | |
11526 | struct elf_link_hash_entry *h; | |
11527 | struct ppc_link_hash_entry *eh; | |
11528 | Elf_Internal_Sym *sym; | |
11529 | asection *sym_sec; | |
11530 | struct _opd_sec_data *opd; | |
11531 | bfd_vma sym_value; | |
11532 | bfd_vma dest; | |
11533 | ||
11534 | r_type = ELF64_R_TYPE (rel->r_info); | |
11535 | if (r_type != R_PPC64_REL24 | |
11536 | && r_type != R_PPC64_REL14 | |
11537 | && r_type != R_PPC64_REL14_BRTAKEN | |
11538 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
11539 | continue; | |
4c52953f | 11540 | |
70cc837d AM |
11541 | r_symndx = ELF64_R_SYM (rel->r_info); |
11542 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
11543 | isec->owner)) | |
4c52953f | 11544 | { |
70cc837d AM |
11545 | ret = -1; |
11546 | break; | |
11547 | } | |
4c52953f | 11548 | |
70cc837d AM |
11549 | /* Calls to dynamic lib functions go through a plt call stub |
11550 | that uses r2. */ | |
11551 | eh = (struct ppc_link_hash_entry *) h; | |
11552 | if (eh != NULL | |
11553 | && (eh->elf.plt.plist != NULL | |
11554 | || (eh->oh != NULL | |
11555 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
11556 | { | |
11557 | ret = 1; | |
11558 | break; | |
4c52953f AM |
11559 | } |
11560 | ||
70cc837d AM |
11561 | if (sym_sec == NULL) |
11562 | /* Ignore other undefined symbols. */ | |
4c52953f | 11563 | continue; |
4c52953f | 11564 | |
70cc837d AM |
11565 | /* Assume branches to other sections not included in the |
11566 | link need stubs too, to cover -R and absolute syms. */ | |
11567 | if (sym_sec->output_section == NULL) | |
11568 | { | |
11569 | ret = 1; | |
11570 | break; | |
11571 | } | |
4c52953f | 11572 | |
70cc837d AM |
11573 | if (h == NULL) |
11574 | sym_value = sym->st_value; | |
11575 | else | |
11576 | { | |
11577 | if (h->root.type != bfd_link_hash_defined | |
11578 | && h->root.type != bfd_link_hash_defweak) | |
11579 | abort (); | |
11580 | sym_value = h->root.u.def.value; | |
11581 | } | |
11582 | sym_value += rel->r_addend; | |
4c52953f | 11583 | |
70cc837d AM |
11584 | /* If this branch reloc uses an opd sym, find the code section. */ |
11585 | opd = get_opd_info (sym_sec); | |
11586 | if (opd != NULL) | |
11587 | { | |
11588 | if (h == NULL && opd->adjust != NULL) | |
11589 | { | |
11590 | long adjust; | |
4c52953f | 11591 | |
70cc837d AM |
11592 | adjust = opd->adjust[sym->st_value / 8]; |
11593 | if (adjust == -1) | |
11594 | /* Assume deleted functions won't ever be called. */ | |
11595 | continue; | |
11596 | sym_value += adjust; | |
11597 | } | |
4c52953f | 11598 | |
aef36ac1 AM |
11599 | dest = opd_entry_value (sym_sec, sym_value, |
11600 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
11601 | if (dest == (bfd_vma) -1) |
11602 | continue; | |
11603 | } | |
11604 | else | |
11605 | dest = (sym_value | |
11606 | + sym_sec->output_offset | |
11607 | + sym_sec->output_section->vma); | |
4c52953f | 11608 | |
70cc837d AM |
11609 | /* Ignore branch to self. */ |
11610 | if (sym_sec == isec) | |
11611 | continue; | |
4c52953f | 11612 | |
70cc837d AM |
11613 | /* If the called function uses the toc, we need a stub. */ |
11614 | if (sym_sec->has_toc_reloc | |
11615 | || sym_sec->makes_toc_func_call) | |
4c52953f | 11616 | { |
70cc837d | 11617 | ret = 1; |
4c52953f AM |
11618 | break; |
11619 | } | |
70cc837d AM |
11620 | |
11621 | /* Assume any branch that needs a long branch stub might in fact | |
11622 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
11623 | else if (dest - (isec->output_offset | |
11624 | + isec->output_section->vma | |
6911b7dc AM |
11625 | + rel->r_offset) + (1 << 25) |
11626 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
11627 | ? h->other | |
11628 | : sym->st_other)) | |
4c52953f | 11629 | { |
70cc837d AM |
11630 | ret = 1; |
11631 | break; | |
11632 | } | |
11633 | ||
11634 | /* If calling back to a section in the process of being | |
11635 | tested, we can't say for sure that no toc adjusting stubs | |
11636 | are needed, so don't return zero. */ | |
11637 | else if (sym_sec->call_check_in_progress) | |
11638 | ret = 2; | |
11639 | ||
11640 | /* Branches to another section that itself doesn't have any TOC | |
11641 | references are OK. Recursively call ourselves to check. */ | |
11642 | else if (!sym_sec->call_check_done) | |
11643 | { | |
11644 | int recur; | |
11645 | ||
11646 | /* Mark current section as indeterminate, so that other | |
11647 | sections that call back to current won't be marked as | |
11648 | known. */ | |
11649 | isec->call_check_in_progress = 1; | |
11650 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
11651 | isec->call_check_in_progress = 0; | |
11652 | ||
4c52953f AM |
11653 | if (recur != 0) |
11654 | { | |
70cc837d AM |
11655 | ret = recur; |
11656 | if (recur != 2) | |
11657 | break; | |
4c52953f AM |
11658 | } |
11659 | } | |
4c52953f | 11660 | } |
70cc837d AM |
11661 | |
11662 | if (local_syms != NULL | |
11663 | && (elf_symtab_hdr (isec->owner).contents | |
11664 | != (unsigned char *) local_syms)) | |
11665 | free (local_syms); | |
11666 | if (elf_section_data (isec)->relocs != relstart) | |
11667 | free (relstart); | |
9b5ecbd0 AM |
11668 | } |
11669 | ||
70cc837d AM |
11670 | if ((ret & 1) == 0 |
11671 | && isec->map_head.s != NULL | |
11672 | && (strcmp (isec->output_section->name, ".init") == 0 | |
11673 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
11674 | { | |
11675 | if (isec->map_head.s->has_toc_reloc | |
11676 | || isec->map_head.s->makes_toc_func_call) | |
11677 | ret = 1; | |
11678 | else if (!isec->map_head.s->call_check_done) | |
11679 | { | |
11680 | int recur; | |
11681 | isec->call_check_in_progress = 1; | |
11682 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
11683 | isec->call_check_in_progress = 0; | |
11684 | if (recur != 0) | |
11685 | ret = recur; | |
11686 | } | |
11687 | } | |
11688 | ||
11689 | if (ret == 1) | |
11690 | isec->makes_toc_func_call = 1; | |
4c52953f | 11691 | |
9b5ecbd0 AM |
11692 | return ret; |
11693 | } | |
11694 | ||
721956f4 AM |
11695 | /* The linker repeatedly calls this function for each input section, |
11696 | in the order that input sections are linked into output sections. | |
11697 | Build lists of input sections to determine groupings between which | |
11698 | we may insert linker stubs. */ | |
11699 | ||
9b5ecbd0 | 11700 | bfd_boolean |
4ce794b7 | 11701 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
11702 | { |
11703 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11704 | ||
4dfe6ac6 NC |
11705 | if (htab == NULL) |
11706 | return FALSE; | |
11707 | ||
734b6cf9 AM |
11708 | if ((isec->output_section->flags & SEC_CODE) != 0 |
11709 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 11710 | { |
734b6cf9 | 11711 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 11712 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 11713 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
11714 | /* This happens to make the list in reverse order, |
11715 | which is what we want. */ | |
734b6cf9 AM |
11716 | PREV_SEC (isec) = *list; |
11717 | *list = isec; | |
721956f4 | 11718 | } |
ad8e1ba5 | 11719 | |
4c52953f | 11720 | if (htab->multi_toc_needed) |
9b5ecbd0 | 11721 | { |
8b974ba3 AM |
11722 | /* Analyse sections that aren't already flagged as needing a |
11723 | valid toc pointer. Exclude .fixup for the linux kernel. | |
11724 | .fixup contains branches, but only back to the function that | |
11725 | hit an exception. */ | |
11726 | if (!(isec->has_toc_reloc | |
11727 | || (isec->flags & SEC_CODE) == 0 | |
11728 | || strcmp (isec->name, ".fixup") == 0 | |
11729 | || isec->call_check_done)) | |
11730 | { | |
11731 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 11732 | return FALSE; |
8b974ba3 AM |
11733 | } |
11734 | /* Make all sections use the TOC assigned for this object file. | |
11735 | This will be wrong for pasted sections; We fix that in | |
11736 | check_pasted_section(). */ | |
11737 | if (elf_gp (isec->owner) != 0) | |
11738 | htab->toc_curr = elf_gp (isec->owner); | |
11739 | } | |
11740 | ||
ad8e1ba5 | 11741 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 11742 | return TRUE; |
721956f4 AM |
11743 | } |
11744 | ||
70cc837d AM |
11745 | /* Check that all .init and .fini sections use the same toc, if they |
11746 | have toc relocs. */ | |
11747 | ||
11748 | static bfd_boolean | |
11749 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
11750 | { | |
11751 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
11752 | ||
11753 | if (o != NULL) | |
11754 | { | |
11755 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11756 | bfd_vma toc_off = 0; | |
11757 | asection *i; | |
11758 | ||
11759 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11760 | if (i->has_toc_reloc) | |
11761 | { | |
11762 | if (toc_off == 0) | |
11763 | toc_off = htab->stub_group[i->id].toc_off; | |
11764 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
11765 | return FALSE; | |
11766 | } | |
6683a28d AM |
11767 | |
11768 | if (toc_off == 0) | |
11769 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11770 | if (i->makes_toc_func_call) | |
11771 | { | |
11772 | toc_off = htab->stub_group[i->id].toc_off; | |
11773 | break; | |
11774 | } | |
11775 | ||
70cc837d AM |
11776 | /* Make sure the whole pasted function uses the same toc offset. */ |
11777 | if (toc_off != 0) | |
11778 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
11779 | htab->stub_group[i->id].toc_off = toc_off; | |
11780 | } | |
11781 | return TRUE; | |
11782 | } | |
11783 | ||
11784 | bfd_boolean | |
11785 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
11786 | { | |
11787 | return (check_pasted_section (info, ".init") | |
11788 | & check_pasted_section (info, ".fini")); | |
11789 | } | |
11790 | ||
721956f4 AM |
11791 | /* See whether we can group stub sections together. Grouping stub |
11792 | sections may result in fewer stubs. More importantly, we need to | |
11793 | put all .init* and .fini* stubs at the beginning of the .init or | |
11794 | .fini output sections respectively, because glibc splits the | |
11795 | _init and _fini functions into multiple parts. Putting a stub in | |
11796 | the middle of a function is not a good idea. */ | |
11797 | ||
11798 | static void | |
4ce794b7 AM |
11799 | group_sections (struct ppc_link_hash_table *htab, |
11800 | bfd_size_type stub_group_size, | |
11801 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 11802 | { |
7c8fe5c4 AM |
11803 | asection **list; |
11804 | bfd_size_type stub14_group_size; | |
11805 | bfd_boolean suppress_size_errors; | |
11806 | ||
11807 | suppress_size_errors = FALSE; | |
11808 | stub14_group_size = stub_group_size; | |
11809 | if (stub_group_size == 1) | |
11810 | { | |
11811 | /* Default values. */ | |
11812 | if (stubs_always_before_branch) | |
11813 | { | |
11814 | stub_group_size = 0x1e00000; | |
11815 | stub14_group_size = 0x7800; | |
11816 | } | |
11817 | else | |
11818 | { | |
11819 | stub_group_size = 0x1c00000; | |
11820 | stub14_group_size = 0x7000; | |
11821 | } | |
11822 | suppress_size_errors = TRUE; | |
11823 | } | |
11824 | ||
11825 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 11826 | do |
721956f4 | 11827 | { |
734b6cf9 AM |
11828 | asection *tail = *list; |
11829 | while (tail != NULL) | |
721956f4 | 11830 | { |
734b6cf9 AM |
11831 | asection *curr; |
11832 | asection *prev; | |
11833 | bfd_size_type total; | |
11834 | bfd_boolean big_sec; | |
11835 | bfd_vma curr_toc; | |
11836 | ||
11837 | curr = tail; | |
eea6121a | 11838 | total = tail->size; |
6bee8834 AM |
11839 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
11840 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
11841 | ? stub14_group_size : stub_group_size); |
11842 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
11843 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
11844 | tail->owner, tail); | |
734b6cf9 AM |
11845 | curr_toc = htab->stub_group[tail->id].toc_off; |
11846 | ||
11847 | while ((prev = PREV_SEC (curr)) != NULL | |
11848 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
11849 | < (ppc64_elf_section_data (prev) != NULL |
11850 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11851 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 11852 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
11853 | curr = prev; |
11854 | ||
11855 | /* OK, the size from the start of CURR to the end is less | |
11856 | than stub_group_size and thus can be handled by one stub | |
11857 | section. (or the tail section is itself larger than | |
11858 | stub_group_size, in which case we may be toast.) We | |
11859 | should really be keeping track of the total size of stubs | |
11860 | added here, as stubs contribute to the final output | |
11861 | section size. That's a little tricky, and this way will | |
11862 | only break if stubs added make the total size more than | |
11863 | 2^25, ie. for the default stub_group_size, if stubs total | |
11864 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
11865 | do | |
721956f4 AM |
11866 | { |
11867 | prev = PREV_SEC (tail); | |
734b6cf9 | 11868 | /* Set up this stub group. */ |
721956f4 AM |
11869 | htab->stub_group[tail->id].link_sec = curr; |
11870 | } | |
734b6cf9 AM |
11871 | while (tail != curr && (tail = prev) != NULL); |
11872 | ||
11873 | /* But wait, there's more! Input sections up to stub_group_size | |
11874 | bytes before the stub section can be handled by it too. | |
11875 | Don't do this if we have a really large section after the | |
11876 | stubs, as adding more stubs increases the chance that | |
11877 | branches may not reach into the stub section. */ | |
11878 | if (!stubs_always_before_branch && !big_sec) | |
11879 | { | |
11880 | total = 0; | |
11881 | while (prev != NULL | |
11882 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
11883 | < (ppc64_elf_section_data (prev) != NULL |
11884 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 11885 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
11886 | && htab->stub_group[prev->id].toc_off == curr_toc) |
11887 | { | |
11888 | tail = prev; | |
11889 | prev = PREV_SEC (tail); | |
11890 | htab->stub_group[tail->id].link_sec = curr; | |
11891 | } | |
11892 | } | |
11893 | tail = prev; | |
721956f4 AM |
11894 | } |
11895 | } | |
734b6cf9 AM |
11896 | while (list-- != htab->input_list); |
11897 | free (htab->input_list); | |
721956f4 AM |
11898 | #undef PREV_SEC |
11899 | } | |
11900 | ||
58d180e8 AM |
11901 | static const unsigned char glink_eh_frame_cie[] = |
11902 | { | |
11903 | 0, 0, 0, 16, /* length. */ | |
11904 | 0, 0, 0, 0, /* id. */ | |
11905 | 1, /* CIE version. */ | |
11906 | 'z', 'R', 0, /* Augmentation string. */ | |
11907 | 4, /* Code alignment. */ | |
11908 | 0x78, /* Data alignment. */ | |
11909 | 65, /* RA reg. */ | |
11910 | 1, /* Augmentation size. */ | |
11911 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
da44f4e5 AM |
11912 | DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */ |
11913 | 0, 0, 0, 0 | |
58d180e8 AM |
11914 | }; |
11915 | ||
d969d15f AM |
11916 | /* Stripping output sections is normally done before dynamic section |
11917 | symbols have been allocated. This function is called later, and | |
11918 | handles cases like htab->brlt which is mapped to its own output | |
11919 | section. */ | |
11920 | ||
11921 | static void | |
11922 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11923 | { | |
11924 | if (isec->size == 0 | |
11925 | && isec->output_section->size == 0 | |
53d8967a | 11926 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
11927 | && !bfd_section_removed_from_list (info->output_bfd, |
11928 | isec->output_section) | |
11929 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11930 | { | |
11931 | isec->output_section->flags |= SEC_EXCLUDE; | |
11932 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11933 | info->output_bfd->section_count--; | |
11934 | } | |
11935 | } | |
11936 | ||
721956f4 AM |
11937 | /* Determine and set the size of the stub section for a final link. |
11938 | ||
11939 | The basic idea here is to examine all the relocations looking for | |
11940 | PC-relative calls to a target that is unreachable with a "bl" | |
11941 | instruction. */ | |
11942 | ||
b34976b6 | 11943 | bfd_boolean |
e7d1c40c | 11944 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
11945 | { |
11946 | bfd_size_type stub_group_size; | |
b34976b6 | 11947 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11948 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11949 | ||
4dfe6ac6 NC |
11950 | if (htab == NULL) |
11951 | return FALSE; | |
11952 | ||
e7d1c40c AM |
11953 | if (htab->params->plt_thread_safe == -1 && !info->executable) |
11954 | htab->params->plt_thread_safe = 1; | |
b9e5796b | 11955 | if (!htab->opd_abi) |
e7d1c40c AM |
11956 | htab->params->plt_thread_safe = 0; |
11957 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 11958 | { |
e2458743 | 11959 | static const char *const thread_starter[] = |
794e51c0 AM |
11960 | { |
11961 | "pthread_create", | |
11962 | /* libstdc++ */ | |
11963 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
11964 | /* librt */ | |
11965 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
11966 | "mq_notify", "create_timer", | |
11967 | /* libanl */ | |
11968 | "getaddrinfo_a", | |
11969 | /* libgomp */ | |
2300b5a1 | 11970 | "GOMP_parallel", |
794e51c0 | 11971 | "GOMP_parallel_start", |
2300b5a1 | 11972 | "GOMP_parallel_loop_static", |
794e51c0 | 11973 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 11974 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 11975 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 11976 | "GOMP_parallel_loop_guided", |
794e51c0 | 11977 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 11978 | "GOMP_parallel_loop_runtime", |
794e51c0 | 11979 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 11980 | "GOMP_parallel_sections", |
68ffbac6 | 11981 | "GOMP_parallel_sections_start", |
794e51c0 AM |
11982 | }; |
11983 | unsigned i; | |
11984 | ||
11985 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
11986 | { | |
11987 | struct elf_link_hash_entry *h; | |
11988 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
11989 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
11990 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
11991 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
11992 | break; |
11993 | } | |
11994 | } | |
e7d1c40c AM |
11995 | stubs_always_before_branch = htab->params->group_size < 0; |
11996 | if (htab->params->group_size < 0) | |
11997 | stub_group_size = -htab->params->group_size; | |
721956f4 | 11998 | else |
e7d1c40c | 11999 | stub_group_size = htab->params->group_size; |
721956f4 AM |
12000 | |
12001 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
12002 | ||
721956f4 AM |
12003 | while (1) |
12004 | { | |
12005 | bfd *input_bfd; | |
12006 | unsigned int bfd_indx; | |
12007 | asection *stub_sec; | |
721956f4 AM |
12008 | |
12009 | htab->stub_iteration += 1; | |
721956f4 AM |
12010 | |
12011 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12012 | input_bfd != NULL; | |
c72f2fb2 | 12013 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12014 | { |
12015 | Elf_Internal_Shdr *symtab_hdr; | |
12016 | asection *section; | |
6cdc0ccc | 12017 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12018 | |
0c8d6e5c | 12019 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12020 | continue; |
12021 | ||
721956f4 | 12022 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12023 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12024 | if (symtab_hdr->sh_info == 0) |
12025 | continue; | |
12026 | ||
721956f4 AM |
12027 | /* Walk over each section attached to the input bfd. */ |
12028 | for (section = input_bfd->sections; | |
12029 | section != NULL; | |
12030 | section = section->next) | |
12031 | { | |
721956f4 | 12032 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12033 | |
12034 | /* If there aren't any relocs, then there's nothing more | |
12035 | to do. */ | |
12036 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12037 | || (section->flags & SEC_ALLOC) == 0 |
12038 | || (section->flags & SEC_LOAD) == 0 | |
12039 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12040 | || section->reloc_count == 0) |
12041 | continue; | |
12042 | ||
12043 | /* If this section is a link-once section that will be | |
12044 | discarded, then don't create any stubs. */ | |
12045 | if (section->output_section == NULL | |
927be08e | 12046 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12047 | continue; |
12048 | ||
1e2f5b6e AM |
12049 | /* Get the relocs. */ |
12050 | internal_relocs | |
4ce794b7 | 12051 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12052 | info->keep_memory); |
721956f4 | 12053 | if (internal_relocs == NULL) |
1e2f5b6e | 12054 | goto error_ret_free_local; |
721956f4 AM |
12055 | |
12056 | /* Now examine each relocation. */ | |
12057 | irela = internal_relocs; | |
12058 | irelaend = irela + section->reloc_count; | |
12059 | for (; irela < irelaend; irela++) | |
12060 | { | |
4ce794b7 AM |
12061 | enum elf_ppc64_reloc_type r_type; |
12062 | unsigned int r_indx; | |
721956f4 AM |
12063 | enum ppc_stub_type stub_type; |
12064 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12065 | asection *sym_sec, *code_sec; |
e054468f | 12066 | bfd_vma sym_value, code_value; |
721956f4 | 12067 | bfd_vma destination; |
6911b7dc | 12068 | unsigned long local_off; |
8843416a | 12069 | bfd_boolean ok_dest; |
721956f4 | 12070 | struct ppc_link_hash_entry *hash; |
8387904d | 12071 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12072 | struct elf_link_hash_entry *h; |
12073 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12074 | char *stub_name; |
12075 | const asection *id_sec; | |
74f0fb50 | 12076 | struct _opd_sec_data *opd; |
e054468f | 12077 | struct plt_entry *plt_ent; |
721956f4 AM |
12078 | |
12079 | r_type = ELF64_R_TYPE (irela->r_info); | |
12080 | r_indx = ELF64_R_SYM (irela->r_info); | |
12081 | ||
4ce794b7 | 12082 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12083 | { |
12084 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12085 | goto error_ret_free_internal; |
721956f4 AM |
12086 | } |
12087 | ||
12088 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12089 | if (r_type != R_PPC64_REL24 |
12090 | && r_type != R_PPC64_REL14 | |
12091 | && r_type != R_PPC64_REL14_BRTAKEN | |
12092 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12093 | continue; |
12094 | ||
12095 | /* Now determine the call target, its name, value, | |
12096 | section. */ | |
411e1bfb AM |
12097 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12098 | r_indx, input_bfd)) | |
12099 | goto error_ret_free_internal; | |
12100 | hash = (struct ppc_link_hash_entry *) h; | |
12101 | ||
8843416a | 12102 | ok_dest = FALSE; |
8387904d | 12103 | fdh = NULL; |
7fe2b9a6 | 12104 | sym_value = 0; |
411e1bfb | 12105 | if (hash == NULL) |
721956f4 | 12106 | { |
411e1bfb | 12107 | sym_value = sym->st_value; |
8843416a | 12108 | ok_dest = TRUE; |
721956f4 | 12109 | } |
7fe2b9a6 AM |
12110 | else if (hash->elf.root.type == bfd_link_hash_defined |
12111 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12112 | { | |
12113 | sym_value = hash->elf.root.u.def.value; | |
12114 | if (sym_sec->output_section != NULL) | |
12115 | ok_dest = TRUE; | |
12116 | } | |
12117 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12118 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12119 | { |
99877b66 | 12120 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12121 | use the func descriptor sym instead if it is |
12122 | defined. */ | |
ceb1f1ef | 12123 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 12124 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 12125 | { |
8387904d AM |
12126 | if (fdh->elf.root.type == bfd_link_hash_defined |
12127 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12128 | { | |
12129 | sym_sec = fdh->elf.root.u.def.section; | |
12130 | sym_value = fdh->elf.root.u.def.value; | |
12131 | if (sym_sec->output_section != NULL) | |
12132 | ok_dest = TRUE; | |
12133 | } | |
99877b66 AM |
12134 | else |
12135 | fdh = NULL; | |
8387904d | 12136 | } |
7fe2b9a6 AM |
12137 | } |
12138 | else | |
12139 | { | |
12140 | bfd_set_error (bfd_error_bad_value); | |
12141 | goto error_ret_free_internal; | |
721956f4 AM |
12142 | } |
12143 | ||
8843416a | 12144 | destination = 0; |
6911b7dc | 12145 | local_off = 0; |
8843416a AM |
12146 | if (ok_dest) |
12147 | { | |
12148 | sym_value += irela->r_addend; | |
12149 | destination = (sym_value | |
12150 | + sym_sec->output_offset | |
12151 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12152 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12153 | ? hash->elf.other | |
12154 | : sym->st_other); | |
8843416a AM |
12155 | } |
12156 | ||
8387904d | 12157 | code_sec = sym_sec; |
e054468f | 12158 | code_value = sym_value; |
74f0fb50 AM |
12159 | opd = get_opd_info (sym_sec); |
12160 | if (opd != NULL) | |
8387904d AM |
12161 | { |
12162 | bfd_vma dest; | |
12163 | ||
74f0fb50 | 12164 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12165 | { |
74f0fb50 | 12166 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
12167 | if (adjust == -1) |
12168 | continue; | |
e054468f | 12169 | code_value += adjust; |
8387904d AM |
12170 | sym_value += adjust; |
12171 | } | |
12172 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12173 | &code_sec, &code_value, FALSE); |
8387904d AM |
12174 | if (dest != (bfd_vma) -1) |
12175 | { | |
12176 | destination = dest; | |
12177 | if (fdh != NULL) | |
12178 | { | |
12179 | /* Fixup old ABI sym to point at code | |
12180 | entry. */ | |
99877b66 | 12181 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12182 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12183 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12184 | } |
12185 | } | |
12186 | } | |
12187 | ||
721956f4 | 12188 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12189 | plt_ent = NULL; |
721956f4 | 12190 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12191 | &plt_ent, destination, |
12192 | local_off); | |
ad8e1ba5 AM |
12193 | |
12194 | if (stub_type != ppc_stub_plt_call) | |
12195 | { | |
12196 | /* Check whether we need a TOC adjusting stub. | |
12197 | Since the linker pastes together pieces from | |
12198 | different object files when creating the | |
12199 | _init and _fini functions, it may be that a | |
12200 | call to what looks like a local sym is in | |
12201 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12202 | if (code_sec != NULL |
12203 | && code_sec->output_section != NULL | |
12204 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 12205 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
12206 | && (code_sec->has_toc_reloc |
12207 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12208 | stub_type = ppc_stub_long_branch_r2off; |
12209 | } | |
12210 | ||
721956f4 AM |
12211 | if (stub_type == ppc_stub_none) |
12212 | continue; | |
12213 | ||
411e1bfb AM |
12214 | /* __tls_get_addr calls might be eliminated. */ |
12215 | if (stub_type != ppc_stub_plt_call | |
12216 | && hash != NULL | |
8387904d AM |
12217 | && (hash == htab->tls_get_addr |
12218 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12219 | && section->has_tls_reloc |
12220 | && irela != internal_relocs) | |
12221 | { | |
12222 | /* Get tls info. */ | |
f961d9dd | 12223 | unsigned char *tls_mask; |
411e1bfb | 12224 | |
3a71aa26 | 12225 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12226 | irela - 1, input_bfd)) |
12227 | goto error_ret_free_internal; | |
e7b938ca | 12228 | if (*tls_mask != 0) |
411e1bfb AM |
12229 | continue; |
12230 | } | |
12231 | ||
3b421ab3 AM |
12232 | if (stub_type == ppc_stub_plt_call |
12233 | && irela + 1 < irelaend | |
12234 | && irela[1].r_offset == irela->r_offset + 4 | |
794e51c0 AM |
12235 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
12236 | { | |
12237 | if (!tocsave_find (htab, INSERT, | |
12238 | &local_syms, irela + 1, input_bfd)) | |
12239 | goto error_ret_free_internal; | |
12240 | } | |
12241 | else if (stub_type == ppc_stub_plt_call) | |
12242 | stub_type = ppc_stub_plt_call_r2save; | |
3b421ab3 | 12243 | |
721956f4 AM |
12244 | /* Support for grouping stub sections. */ |
12245 | id_sec = htab->stub_group[section->id].link_sec; | |
12246 | ||
12247 | /* Get the name of this stub. */ | |
12248 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12249 | if (!stub_name) | |
12250 | goto error_ret_free_internal; | |
12251 | ||
12252 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12253 | stub_name, FALSE, FALSE); |
721956f4 AM |
12254 | if (stub_entry != NULL) |
12255 | { | |
12256 | /* The proper stub has already been created. */ | |
12257 | free (stub_name); | |
794e51c0 AM |
12258 | if (stub_type == ppc_stub_plt_call_r2save) |
12259 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12260 | continue; |
12261 | } | |
12262 | ||
25f53a85 | 12263 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12264 | if (stub_entry == NULL) |
12265 | { | |
12266 | free (stub_name); | |
6cdc0ccc AM |
12267 | error_ret_free_internal: |
12268 | if (elf_section_data (section)->relocs == NULL) | |
12269 | free (internal_relocs); | |
12270 | error_ret_free_local: | |
12271 | if (local_syms != NULL | |
12272 | && (symtab_hdr->contents | |
12273 | != (unsigned char *) local_syms)) | |
12274 | free (local_syms); | |
b34976b6 | 12275 | return FALSE; |
721956f4 AM |
12276 | } |
12277 | ||
ad8e1ba5 | 12278 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12279 | if (stub_type != ppc_stub_plt_call |
12280 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12281 | { |
12282 | stub_entry->target_value = code_value; | |
12283 | stub_entry->target_section = code_sec; | |
12284 | } | |
12285 | else | |
12286 | { | |
12287 | stub_entry->target_value = sym_value; | |
12288 | stub_entry->target_section = sym_sec; | |
12289 | } | |
721956f4 | 12290 | stub_entry->h = hash; |
e054468f | 12291 | stub_entry->plt_ent = plt_ent; |
6911b7dc | 12292 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12293 | |
12294 | if (stub_entry->h != NULL) | |
12295 | htab->stub_globals += 1; | |
721956f4 AM |
12296 | } |
12297 | ||
12298 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12299 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12300 | free (internal_relocs); |
721956f4 | 12301 | } |
6cdc0ccc AM |
12302 | |
12303 | if (local_syms != NULL | |
12304 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12305 | { | |
12306 | if (!info->keep_memory) | |
12307 | free (local_syms); | |
12308 | else | |
12309 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12310 | } | |
721956f4 AM |
12311 | } |
12312 | ||
5c3dead3 | 12313 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12314 | stub sections. */ |
e7d1c40c | 12315 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12316 | stub_sec != NULL; |
12317 | stub_sec = stub_sec->next) | |
e717da7e | 12318 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 12319 | { |
5c3dead3 | 12320 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
12321 | stub_sec->size = 0; |
12322 | stub_sec->reloc_count = 0; | |
84f5d08e | 12323 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12324 | } |
eea6121a AM |
12325 | |
12326 | htab->brlt->size = 0; | |
84f5d08e AM |
12327 | htab->brlt->reloc_count = 0; |
12328 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 12329 | if (htab->relbrlt != NULL) |
eea6121a | 12330 | htab->relbrlt->size = 0; |
721956f4 | 12331 | |
63bc6f6c | 12332 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 12333 | |
176a0d42 AM |
12334 | if (info->emitrelocations |
12335 | && htab->glink != NULL && htab->glink->size != 0) | |
12336 | { | |
12337 | htab->glink->reloc_count = 1; | |
12338 | htab->glink->flags |= SEC_RELOC; | |
12339 | } | |
12340 | ||
58d180e8 AM |
12341 | if (htab->glink_eh_frame != NULL |
12342 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
9a2a56cc | 12343 | && htab->glink_eh_frame->output_section->size != 0) |
58d180e8 | 12344 | { |
4bbe044a | 12345 | size_t size = 0, align; |
58d180e8 | 12346 | |
e7d1c40c | 12347 | for (stub_sec = htab->params->stub_bfd->sections; |
58d180e8 AM |
12348 | stub_sec != NULL; |
12349 | stub_sec = stub_sec->next) | |
12350 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
da44f4e5 | 12351 | size += 24; |
58d180e8 AM |
12352 | if (htab->glink != NULL && htab->glink->size != 0) |
12353 | size += 24; | |
12354 | if (size != 0) | |
12355 | size += sizeof (glink_eh_frame_cie); | |
4bbe044a AM |
12356 | align = 1; |
12357 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12358 | align -= 1; | |
12359 | size = (size + align) & ~align; | |
58d180e8 AM |
12360 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
12361 | htab->glink_eh_frame->size = size; | |
12362 | } | |
12363 | ||
e7d1c40c AM |
12364 | if (htab->params->plt_stub_align != 0) |
12365 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12366 | stub_sec != NULL; |
12367 | stub_sec = stub_sec->next) | |
12368 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12369 | stub_sec->size = ((stub_sec->size |
12370 | + (1 << htab->params->plt_stub_align) - 1) | |
12371 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12372 | |
e7d1c40c | 12373 | for (stub_sec = htab->params->stub_bfd->sections; |
5c3dead3 AM |
12374 | stub_sec != NULL; |
12375 | stub_sec = stub_sec->next) | |
12376 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
12377 | && stub_sec->rawsize != stub_sec->size) | |
12378 | break; | |
12379 | ||
12380 | /* Exit from this loop when no stubs have been added, and no stubs | |
12381 | have changed size. */ | |
58d180e8 AM |
12382 | if (stub_sec == NULL |
12383 | && (htab->glink_eh_frame == NULL | |
12384 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
12385 | break; |
12386 | ||
721956f4 | 12387 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 12388 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
12389 | } |
12390 | ||
da44f4e5 AM |
12391 | if (htab->glink_eh_frame != NULL |
12392 | && htab->glink_eh_frame->size != 0) | |
12393 | { | |
12394 | bfd_vma val; | |
12395 | bfd_byte *p, *last_fde; | |
12396 | size_t last_fde_len, size, align, pad; | |
12397 | asection *stub_sec; | |
12398 | ||
12399 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
12400 | if (p == NULL) | |
12401 | return FALSE; | |
12402 | htab->glink_eh_frame->contents = p; | |
12403 | last_fde = p; | |
12404 | ||
12405 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
12406 | /* CIE length (rewrite in case little-endian). */ | |
12407 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; | |
12408 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
12409 | p += sizeof (glink_eh_frame_cie); | |
12410 | ||
12411 | for (stub_sec = htab->params->stub_bfd->sections; | |
12412 | stub_sec != NULL; | |
12413 | stub_sec = stub_sec->next) | |
12414 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
12415 | { | |
12416 | last_fde = p; | |
12417 | last_fde_len = 20; | |
12418 | /* FDE length. */ | |
12419 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12420 | p += 4; | |
12421 | /* CIE pointer. */ | |
12422 | val = p - htab->glink_eh_frame->contents; | |
12423 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12424 | p += 4; | |
12425 | /* Offset to stub section, written later. */ | |
12426 | p += 4; | |
12427 | /* stub section size. */ | |
12428 | bfd_put_32 (htab->elf.dynobj, stub_sec->size, p); | |
12429 | p += 4; | |
12430 | /* Augmentation. */ | |
12431 | p += 1; | |
12432 | /* Pad. */ | |
12433 | p += 7; | |
12434 | } | |
12435 | if (htab->glink != NULL && htab->glink->size != 0) | |
12436 | { | |
12437 | last_fde = p; | |
12438 | last_fde_len = 20; | |
12439 | /* FDE length. */ | |
12440 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
12441 | p += 4; | |
12442 | /* CIE pointer. */ | |
12443 | val = p - htab->glink_eh_frame->contents; | |
12444 | bfd_put_32 (htab->elf.dynobj, val, p); | |
12445 | p += 4; | |
12446 | /* Offset to .glink, written later. */ | |
12447 | p += 4; | |
12448 | /* .glink size. */ | |
12449 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
12450 | p += 4; | |
12451 | /* Augmentation. */ | |
12452 | p += 1; | |
12453 | ||
12454 | *p++ = DW_CFA_advance_loc + 1; | |
12455 | *p++ = DW_CFA_register; | |
12456 | *p++ = 65; | |
12457 | *p++ = 12; | |
12458 | *p++ = DW_CFA_advance_loc + 4; | |
12459 | *p++ = DW_CFA_restore_extended; | |
12460 | *p++ = 65; | |
12461 | } | |
12462 | /* Subsume any padding into the last FDE if user .eh_frame | |
12463 | sections are aligned more than glink_eh_frame. Otherwise any | |
12464 | zero padding will be seen as a terminator. */ | |
12465 | size = p - htab->glink_eh_frame->contents; | |
12466 | align = 1; | |
12467 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
12468 | align -= 1; | |
12469 | pad = ((size + align) & ~align) - size; | |
12470 | htab->glink_eh_frame->size = size + pad; | |
12471 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
12472 | } | |
12473 | ||
d969d15f AM |
12474 | maybe_strip_output (info, htab->brlt); |
12475 | if (htab->glink_eh_frame != NULL) | |
12476 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 12477 | |
b34976b6 | 12478 | return TRUE; |
721956f4 AM |
12479 | } |
12480 | ||
12481 | /* Called after we have determined section placement. If sections | |
805fc799 | 12482 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 12483 | |
805fc799 | 12484 | bfd_vma |
1c865ab2 | 12485 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 12486 | { |
805fc799 AM |
12487 | asection *s; |
12488 | bfd_vma TOCstart; | |
721956f4 | 12489 | |
805fc799 AM |
12490 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
12491 | order. The TOC starts where the first of these sections starts. */ | |
12492 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 12493 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12494 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 12495 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12496 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 12497 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 12498 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 12499 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
12500 | { |
12501 | /* This may happen for | |
12502 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
12503 | .toc directive | |
12504 | o bad linker script | |
12505 | o --gc-sections and empty TOC sections | |
12506 | ||
12507 | FIXME: Warn user? */ | |
12508 | ||
12509 | /* Look for a likely section. We probably won't even be | |
12510 | using TOCstart. */ | |
12511 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
12512 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
12513 | | SEC_EXCLUDE)) | |
805fc799 AM |
12514 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12515 | break; | |
721956f4 | 12516 | if (s == NULL) |
805fc799 | 12517 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12518 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
12519 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
12520 | break; | |
721956f4 | 12521 | if (s == NULL) |
805fc799 | 12522 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
12523 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
12524 | == SEC_ALLOC) | |
805fc799 | 12525 | break; |
721956f4 | 12526 | if (s == NULL) |
805fc799 | 12527 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 12528 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
12529 | break; |
12530 | } | |
721956f4 | 12531 | |
805fc799 AM |
12532 | TOCstart = 0; |
12533 | if (s != NULL) | |
12534 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 12535 | |
1c865ab2 AM |
12536 | _bfd_set_gp_value (obfd, TOCstart); |
12537 | ||
810d4e75 | 12538 | if (info != NULL && s != NULL) |
1c865ab2 AM |
12539 | { |
12540 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12541 | ||
810d4e75 AM |
12542 | if (htab != NULL) |
12543 | { | |
12544 | if (htab->elf.hgot != NULL) | |
12545 | { | |
12546 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; | |
12547 | htab->elf.hgot->root.u.def.section = s; | |
12548 | } | |
12549 | } | |
12550 | else | |
1c865ab2 | 12551 | { |
810d4e75 AM |
12552 | struct bfd_link_hash_entry *bh = NULL; |
12553 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
12554 | s, TOC_BASE_OFF, NULL, FALSE, | |
12555 | FALSE, &bh); | |
1c865ab2 AM |
12556 | } |
12557 | } | |
805fc799 | 12558 | return TOCstart; |
721956f4 AM |
12559 | } |
12560 | ||
a345bc8d AM |
12561 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
12562 | write out any global entry stubs. */ | |
12563 | ||
12564 | static bfd_boolean | |
12565 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
12566 | { | |
12567 | struct bfd_link_info *info; | |
12568 | struct ppc_link_hash_table *htab; | |
12569 | struct plt_entry *pent; | |
12570 | asection *s; | |
12571 | ||
12572 | if (h->root.type == bfd_link_hash_indirect) | |
12573 | return TRUE; | |
12574 | ||
12575 | if (!h->pointer_equality_needed) | |
12576 | return TRUE; | |
12577 | ||
12578 | if (h->def_regular) | |
12579 | return TRUE; | |
12580 | ||
12581 | info = inf; | |
12582 | htab = ppc_hash_table (info); | |
12583 | if (htab == NULL) | |
12584 | return FALSE; | |
12585 | ||
12586 | s = htab->glink; | |
12587 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
12588 | if (pent->plt.offset != (bfd_vma) -1 | |
12589 | && pent->addend == 0) | |
12590 | { | |
12591 | bfd_byte *p; | |
12592 | asection *plt; | |
12593 | bfd_vma off; | |
12594 | ||
a345bc8d | 12595 | p = s->contents + h->root.u.def.value; |
33e44f2e | 12596 | plt = htab->elf.splt; |
a345bc8d AM |
12597 | if (!htab->elf.dynamic_sections_created |
12598 | || h->dynindx == -1) | |
33e44f2e | 12599 | plt = htab->elf.iplt; |
a345bc8d AM |
12600 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
12601 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
12602 | ||
12603 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
12604 | { | |
12605 | info->callbacks->einfo | |
12606 | (_("%P: linkage table error against `%T'\n"), | |
12607 | h->root.root.string); | |
12608 | bfd_set_error (bfd_error_bad_value); | |
12609 | htab->stub_error = TRUE; | |
12610 | } | |
12611 | ||
7341d5e2 AM |
12612 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
12613 | if (htab->params->emit_stub_syms) | |
12614 | { | |
12615 | size_t len = strlen (h->root.root.string); | |
12616 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
12617 | ||
12618 | if (name == NULL) | |
12619 | return FALSE; | |
12620 | ||
12621 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
12622 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
12623 | if (h == NULL) | |
12624 | return FALSE; | |
12625 | if (h->root.type == bfd_link_hash_new) | |
12626 | { | |
12627 | h->root.type = bfd_link_hash_defined; | |
12628 | h->root.u.def.section = s; | |
12629 | h->root.u.def.value = p - s->contents; | |
12630 | h->ref_regular = 1; | |
12631 | h->def_regular = 1; | |
12632 | h->ref_regular_nonweak = 1; | |
12633 | h->forced_local = 1; | |
12634 | h->non_elf = 0; | |
12635 | } | |
12636 | } | |
12637 | ||
a345bc8d AM |
12638 | if (PPC_HA (off) != 0) |
12639 | { | |
12640 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
12641 | p += 4; | |
12642 | } | |
12643 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
12644 | p += 4; | |
12645 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
12646 | p += 4; | |
12647 | bfd_put_32 (s->owner, BCTR, p); | |
12648 | break; | |
12649 | } | |
12650 | return TRUE; | |
12651 | } | |
12652 | ||
721956f4 AM |
12653 | /* Build all the stubs associated with the current output file. |
12654 | The stubs are kept in a hash table attached to the main linker | |
12655 | hash table. This function is called via gldelf64ppc_finish. */ | |
12656 | ||
b34976b6 | 12657 | bfd_boolean |
e7d1c40c | 12658 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 12659 | char **stats) |
5d1634d7 AM |
12660 | { |
12661 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 12662 | asection *stub_sec; |
5d1634d7 | 12663 | bfd_byte *p; |
e717da7e | 12664 | int stub_sec_count = 0; |
5d1634d7 | 12665 | |
4dfe6ac6 NC |
12666 | if (htab == NULL) |
12667 | return FALSE; | |
12668 | ||
eea6121a | 12669 | /* Allocate memory to hold the linker stubs. */ |
e7d1c40c | 12670 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12671 | stub_sec != NULL; |
12672 | stub_sec = stub_sec->next) | |
eea6121a AM |
12673 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
12674 | && stub_sec->size != 0) | |
e717da7e | 12675 | { |
e7d1c40c | 12676 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
12677 | if (stub_sec->contents == NULL) |
12678 | return FALSE; | |
12679 | /* We want to check that built size is the same as calculated | |
12680 | size. rawsize is a convenient location to use. */ | |
12681 | stub_sec->rawsize = stub_sec->size; | |
12682 | stub_sec->size = 0; | |
e717da7e | 12683 | } |
5d1634d7 | 12684 | |
23eb7e01 | 12685 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 12686 | { |
9f951329 | 12687 | unsigned int indx; |
ad8e1ba5 | 12688 | bfd_vma plt0; |
9f951329 | 12689 | |
721956f4 | 12690 | /* Build the .glink plt call stub. */ |
e7d1c40c | 12691 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12692 | { |
12693 | struct elf_link_hash_entry *h; | |
468392fb AM |
12694 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
12695 | TRUE, FALSE, FALSE); | |
97b639ba AM |
12696 | if (h == NULL) |
12697 | return FALSE; | |
12698 | if (h->root.type == bfd_link_hash_new) | |
12699 | { | |
12700 | h->root.type = bfd_link_hash_defined; | |
12701 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 12702 | h->root.u.def.value = 8; |
f5385ebf AM |
12703 | h->ref_regular = 1; |
12704 | h->def_regular = 1; | |
12705 | h->ref_regular_nonweak = 1; | |
12706 | h->forced_local = 1; | |
12707 | h->non_elf = 0; | |
97b639ba AM |
12708 | } |
12709 | } | |
33e44f2e AM |
12710 | plt0 = (htab->elf.splt->output_section->vma |
12711 | + htab->elf.splt->output_offset | |
12712 | - 16); | |
176a0d42 AM |
12713 | if (info->emitrelocations) |
12714 | { | |
12715 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
12716 | if (r == NULL) | |
12717 | return FALSE; | |
12718 | r->r_offset = (htab->glink->output_offset | |
12719 | + htab->glink->output_section->vma); | |
12720 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
12721 | r->r_addend = plt0; | |
12722 | } | |
4ce794b7 | 12723 | p = htab->glink->contents; |
176a0d42 | 12724 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
12725 | bfd_put_64 (htab->glink->owner, plt0, p); |
12726 | p += 8; | |
b9e5796b AM |
12727 | if (htab->opd_abi) |
12728 | { | |
12729 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
12730 | p += 4; | |
12731 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12732 | p += 4; | |
12733 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12734 | p += 4; | |
12735 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12736 | p += 4; | |
12737 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
12738 | p += 4; | |
12739 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12740 | p += 4; | |
12741 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12742 | p += 4; | |
12743 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
12744 | p += 4; | |
12745 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12746 | p += 4; | |
12747 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
12748 | p += 4; | |
12749 | } | |
12750 | else | |
12751 | { | |
12752 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
12753 | p += 4; | |
12754 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
12755 | p += 4; | |
12756 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
12757 | p += 4; | |
12758 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
12759 | p += 4; | |
12760 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
12761 | p += 4; | |
12762 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
12763 | p += 4; | |
12764 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
12765 | p += 4; | |
12766 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
12767 | p += 4; | |
12768 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
12769 | p += 4; | |
12770 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
12771 | p += 4; | |
12772 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
12773 | p += 4; | |
12774 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
12775 | p += 4; | |
12776 | } | |
4ce794b7 | 12777 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 12778 | p += 4; |
ee4bf8d2 AM |
12779 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
12780 | { | |
12781 | bfd_put_32 (htab->glink->owner, NOP, p); | |
12782 | p += 4; | |
12783 | } | |
ad8e1ba5 | 12784 | |
9f951329 AM |
12785 | /* Build the .glink lazy link call stubs. */ |
12786 | indx = 0; | |
a345bc8d | 12787 | while (p < htab->glink->contents + htab->glink->rawsize) |
9f951329 | 12788 | { |
b9e5796b | 12789 | if (htab->opd_abi) |
9f951329 | 12790 | { |
b9e5796b AM |
12791 | if (indx < 0x8000) |
12792 | { | |
12793 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
12794 | p += 4; | |
12795 | } | |
12796 | else | |
12797 | { | |
12798 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
12799 | p += 4; | |
12800 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
12801 | p); | |
12802 | p += 4; | |
12803 | } | |
9f951329 | 12804 | } |
4ce794b7 | 12805 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 12806 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 12807 | indx++; |
9f951329 AM |
12808 | p += 4; |
12809 | } | |
a345bc8d AM |
12810 | |
12811 | /* Build .glink global entry stubs. */ | |
12812 | if (htab->glink->size > htab->glink->rawsize) | |
afe397ea | 12813 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
5d1634d7 | 12814 | } |
5d1634d7 | 12815 | |
7341d5e2 | 12816 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 12817 | { |
4ce794b7 | 12818 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 12819 | htab->brlt->size); |
4ce794b7 | 12820 | if (htab->brlt->contents == NULL) |
b34976b6 | 12821 | return FALSE; |
721956f4 | 12822 | } |
ee75fd95 | 12823 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
12824 | { |
12825 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 12826 | htab->relbrlt->size); |
63bc6f6c AM |
12827 | if (htab->relbrlt->contents == NULL) |
12828 | return FALSE; | |
12829 | } | |
5d1634d7 | 12830 | |
721956f4 AM |
12831 | /* Build the stubs as directed by the stub hash table. */ |
12832 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 12833 | |
aa8a7074 AM |
12834 | if (htab->relbrlt != NULL) |
12835 | htab->relbrlt->reloc_count = 0; | |
12836 | ||
e7d1c40c AM |
12837 | if (htab->params->plt_stub_align != 0) |
12838 | for (stub_sec = htab->params->stub_bfd->sections; | |
794e51c0 AM |
12839 | stub_sec != NULL; |
12840 | stub_sec = stub_sec->next) | |
12841 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
e7d1c40c AM |
12842 | stub_sec->size = ((stub_sec->size |
12843 | + (1 << htab->params->plt_stub_align) - 1) | |
12844 | & (-1 << htab->params->plt_stub_align)); | |
794e51c0 | 12845 | |
e7d1c40c | 12846 | for (stub_sec = htab->params->stub_bfd->sections; |
721956f4 AM |
12847 | stub_sec != NULL; |
12848 | stub_sec = stub_sec->next) | |
e717da7e AM |
12849 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
12850 | { | |
12851 | stub_sec_count += 1; | |
eea6121a | 12852 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
12853 | break; |
12854 | } | |
5d1634d7 | 12855 | |
da44f4e5 AM |
12856 | /* Note that the glink_eh_frame check here is not only testing that |
12857 | the generated size matched the calculated size but also that | |
12858 | bfd_elf_discard_info didn't make any changes to the section. */ | |
721956f4 | 12859 | if (stub_sec != NULL |
58d180e8 AM |
12860 | || (htab->glink_eh_frame != NULL |
12861 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 12862 | { |
b34976b6 | 12863 | htab->stub_error = TRUE; |
8de848d8 | 12864 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 12865 | } |
721956f4 | 12866 | |
d2a300cf AM |
12867 | if (htab->stub_error) |
12868 | return FALSE; | |
12869 | ||
12870 | if (stats != NULL) | |
12871 | { | |
12872 | *stats = bfd_malloc (500); | |
12873 | if (*stats == NULL) | |
12874 | return FALSE; | |
12875 | ||
ee75fd95 | 12876 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
12877 | " branch %lu\n" |
12878 | " toc adjust %lu\n" | |
12879 | " long branch %lu\n" | |
12880 | " long toc adj %lu\n" | |
794e51c0 | 12881 | " plt call %lu\n" |
7341d5e2 AM |
12882 | " plt call toc %lu\n" |
12883 | " global entry %lu"), | |
e717da7e | 12884 | stub_sec_count, |
ee75fd95 | 12885 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
12886 | htab->stub_count[ppc_stub_long_branch - 1], |
12887 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
12888 | htab->stub_count[ppc_stub_plt_branch - 1], | |
12889 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 12890 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
12891 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
12892 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
12893 | } |
12894 | return TRUE; | |
5bd4f169 AM |
12895 | } |
12896 | ||
99877b66 AM |
12897 | /* This function undoes the changes made by add_symbol_adjust. */ |
12898 | ||
12899 | static bfd_boolean | |
12900 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12901 | { | |
12902 | struct ppc_link_hash_entry *eh; | |
12903 | ||
12904 | if (h->root.type == bfd_link_hash_indirect) | |
12905 | return TRUE; | |
12906 | ||
99877b66 AM |
12907 | eh = (struct ppc_link_hash_entry *) h; |
12908 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
12909 | return TRUE; | |
12910 | ||
12911 | eh->elf.root.type = bfd_link_hash_undefined; | |
12912 | return TRUE; | |
12913 | } | |
12914 | ||
12915 | void | |
12916 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
12917 | { | |
12918 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
12919 | |
12920 | if (htab != NULL) | |
12921 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
12922 | } |
12923 | ||
60124e18 AM |
12924 | /* What to do when ld finds relocations against symbols defined in |
12925 | discarded sections. */ | |
12926 | ||
12927 | static unsigned int | |
12928 | ppc64_elf_action_discarded (asection *sec) | |
12929 | { | |
12930 | if (strcmp (".opd", sec->name) == 0) | |
12931 | return 0; | |
12932 | ||
12933 | if (strcmp (".toc", sec->name) == 0) | |
12934 | return 0; | |
12935 | ||
bce50a28 JJ |
12936 | if (strcmp (".toc1", sec->name) == 0) |
12937 | return 0; | |
12938 | ||
60124e18 AM |
12939 | return _bfd_elf_default_action_discarded (sec); |
12940 | } | |
12941 | ||
5bd4f169 AM |
12942 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
12943 | to handle the relocations for a section. | |
12944 | ||
12945 | The relocs are always passed as Rela structures; if the section | |
12946 | actually uses Rel structures, the r_addend field will always be | |
12947 | zero. | |
12948 | ||
12949 | This function is responsible for adjust the section contents as | |
12950 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 12951 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
12952 | necessary. |
12953 | ||
12954 | This function does not have to worry about setting the reloc | |
12955 | address or the reloc symbol index. | |
12956 | ||
12957 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
12958 | ||
12959 | LOCAL_SECTIONS is an array giving the section in the input file | |
12960 | corresponding to the st_shndx field of each local symbol. | |
12961 | ||
12962 | The global hash table entry for the global symbols can be found | |
12963 | via elf_sym_hashes (input_bfd). | |
12964 | ||
1049f94e | 12965 | When generating relocatable output, this function must handle |
5bd4f169 AM |
12966 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
12967 | going to be the section symbol corresponding to the output | |
12968 | section, which means that the addend must be adjusted | |
12969 | accordingly. */ | |
12970 | ||
b34976b6 | 12971 | static bfd_boolean |
4ce794b7 AM |
12972 | ppc64_elf_relocate_section (bfd *output_bfd, |
12973 | struct bfd_link_info *info, | |
12974 | bfd *input_bfd, | |
12975 | asection *input_section, | |
12976 | bfd_byte *contents, | |
12977 | Elf_Internal_Rela *relocs, | |
12978 | Elf_Internal_Sym *local_syms, | |
12979 | asection **local_sections) | |
5bd4f169 | 12980 | { |
65f38f15 | 12981 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
12982 | Elf_Internal_Shdr *symtab_hdr; |
12983 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
12984 | Elf_Internal_Rela *rel; |
12985 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
12986 | Elf_Internal_Rela outrel; |
12987 | bfd_byte *loc; | |
411e1bfb | 12988 | struct got_entry **local_got_ents; |
5bd4f169 | 12989 | bfd_vma TOCstart; |
b34976b6 AM |
12990 | bfd_boolean ret = TRUE; |
12991 | bfd_boolean is_opd; | |
794e51c0 AM |
12992 | /* Assume 'at' branch hints. */ |
12993 | bfd_boolean is_isa_v2 = TRUE; | |
4fe5ca5b | 12994 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 12995 | |
65f38f15 | 12996 | /* Initialize howto table if needed. */ |
5bd4f169 | 12997 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
12998 | ppc_howto_init (); |
12999 | ||
65f38f15 | 13000 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13001 | if (htab == NULL) |
13002 | return FALSE; | |
ee75fd95 AM |
13003 | |
13004 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13005 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13006 | return TRUE; |
13007 | ||
0c8d6e5c | 13008 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13009 | |
411e1bfb | 13010 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13011 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13012 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13013 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13014 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13015 | |
5bd4f169 AM |
13016 | rel = relocs; |
13017 | relend = relocs + input_section->reloc_count; | |
13018 | for (; rel < relend; rel++) | |
13019 | { | |
04c9666a | 13020 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13021 | bfd_vma addend; |
5bd4f169 AM |
13022 | bfd_reloc_status_type r; |
13023 | Elf_Internal_Sym *sym; | |
13024 | asection *sec; | |
039b3fef AM |
13025 | struct elf_link_hash_entry *h_elf; |
13026 | struct ppc_link_hash_entry *h; | |
13027 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13028 | const char *sym_name; |
0d4792f7 | 13029 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13030 | bfd_vma toc_addend; |
f961d9dd AM |
13031 | unsigned char tls_mask, tls_gd, tls_type; |
13032 | unsigned char sym_type; | |
5bd4f169 | 13033 | bfd_vma relocation; |
b34976b6 AM |
13034 | bfd_boolean unresolved_reloc; |
13035 | bfd_boolean warned; | |
bc30df16 | 13036 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13037 | unsigned int insn; |
e11840f9 | 13038 | unsigned int mask; |
721956f4 AM |
13039 | struct ppc_stub_hash_entry *stub_entry; |
13040 | bfd_vma max_br_offset; | |
13041 | bfd_vma from; | |
31c76678 | 13042 | const Elf_Internal_Rela orig_rel = *rel; |
b80eed39 AM |
13043 | reloc_howto_type *howto; |
13044 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13045 | |
4ce794b7 | 13046 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13047 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13048 | |
13049 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13050 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13051 | proper TOC base to use. */ | |
13052 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
13053 | && rel != relocs | |
13054 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
13055 | && is_opd) | |
13056 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
13057 | ||
4ce794b7 AM |
13058 | sym = NULL; |
13059 | sec = NULL; | |
039b3fef | 13060 | h_elf = NULL; |
4ce794b7 | 13061 | sym_name = NULL; |
b34976b6 AM |
13062 | unresolved_reloc = FALSE; |
13063 | warned = FALSE; | |
65f38f15 | 13064 | |
0b13192e | 13065 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13066 | { |
13067 | /* It's a local symbol. */ | |
74f0fb50 | 13068 | struct _opd_sec_data *opd; |
4025353c | 13069 | |
5bd4f169 AM |
13070 | sym = local_syms + r_symndx; |
13071 | sec = local_sections[r_symndx]; | |
26c61ae5 | 13072 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 13073 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 13074 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
13075 | opd = get_opd_info (sec); |
13076 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 13077 | { |
74f0fb50 | 13078 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
13079 | if (adjust == -1) |
13080 | relocation = 0; | |
13081 | else | |
4cc603a5 AM |
13082 | { |
13083 | /* If this is a relocation against the opd section sym | |
13084 | and we have edited .opd, adjust the reloc addend so | |
13085 | that ld -r and ld --emit-relocs output is correct. | |
13086 | If it is a reloc against some other .opd symbol, | |
13087 | then the symbol value will be adjusted later. */ | |
13088 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13089 | rel->r_addend += adjust; | |
13090 | else | |
13091 | relocation += adjust; | |
13092 | } | |
1e2f5b6e | 13093 | } |
5bd4f169 AM |
13094 | } |
13095 | else | |
13096 | { | |
62d887d4 L |
13097 | bfd_boolean ignored; |
13098 | ||
b2a8e766 AM |
13099 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13100 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 13101 | h_elf, sec, relocation, |
62d887d4 | 13102 | unresolved_reloc, warned, ignored); |
039b3fef AM |
13103 | sym_name = h_elf->root.root.string; |
13104 | sym_type = h_elf->type; | |
b69fdb4e AM |
13105 | if (sec != NULL |
13106 | && sec->owner == output_bfd | |
13107 | && strcmp (sec->name, ".opd") == 0) | |
13108 | { | |
13109 | /* This is a symbol defined in a linker script. All | |
13110 | such are defined in output sections, even those | |
13111 | defined by simple assignment from a symbol defined in | |
13112 | an input section. Transfer the symbol to an | |
13113 | appropriate input .opd section, so that a branch to | |
13114 | this symbol will be mapped to the location specified | |
13115 | by the opd entry. */ | |
13116 | struct bfd_link_order *lo; | |
13117 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
13118 | if (lo->type == bfd_indirect_link_order) | |
13119 | { | |
13120 | asection *isec = lo->u.indirect.section; | |
13121 | if (h_elf->root.u.def.value >= isec->output_offset | |
13122 | && h_elf->root.u.def.value < (isec->output_offset | |
13123 | + isec->size)) | |
13124 | { | |
13125 | h_elf->root.u.def.value -= isec->output_offset; | |
13126 | h_elf->root.u.def.section = isec; | |
13127 | sec = isec; | |
13128 | break; | |
13129 | } | |
13130 | } | |
13131 | } | |
5bd4f169 | 13132 | } |
039b3fef | 13133 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 13134 | |
dbaa2011 | 13135 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 13136 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
13137 | rel, 1, relend, |
13138 | ppc64_elf_howto_table[r_type], 0, | |
e4067dbb | 13139 | contents); |
ab96bf03 AM |
13140 | |
13141 | if (info->relocatable) | |
13142 | continue; | |
13143 | ||
f40da81b AM |
13144 | if (h != NULL && &h->elf == htab->elf.hgot) |
13145 | { | |
13146 | relocation = (TOCstart | |
13147 | + htab->stub_group[input_section->id].toc_off); | |
13148 | sec = bfd_abs_section_ptr; | |
13149 | unresolved_reloc = FALSE; | |
13150 | } | |
13151 | ||
951fd09b AM |
13152 | /* TLS optimizations. Replace instruction sequences and relocs |
13153 | based on information we collected in tls_optimize. We edit | |
13154 | RELOCS so that --emit-relocs will output something sensible | |
13155 | for the final instruction stream. */ | |
13156 | tls_mask = 0; | |
13157 | tls_gd = 0; | |
0d4792f7 | 13158 | toc_symndx = 0; |
727fc41e AM |
13159 | if (h != NULL) |
13160 | tls_mask = h->tls_mask; | |
13161 | else if (local_got_ents != NULL) | |
411e1bfb | 13162 | { |
e054468f AM |
13163 | struct plt_entry **local_plt = (struct plt_entry **) |
13164 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 13165 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 13166 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
13167 | tls_mask = lgot_masks[r_symndx]; |
13168 | } | |
13169 | if (tls_mask == 0 | |
13170 | && (r_type == R_PPC64_TLS | |
13171 | || r_type == R_PPC64_TLSGD | |
13172 | || r_type == R_PPC64_TLSLD)) | |
13173 | { | |
13174 | /* Check for toc tls entries. */ | |
f961d9dd | 13175 | unsigned char *toc_tls; |
0d4792f7 | 13176 | |
727fc41e AM |
13177 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13178 | &local_syms, rel, input_bfd)) | |
13179 | return FALSE; | |
0d4792f7 | 13180 | |
727fc41e AM |
13181 | if (toc_tls) |
13182 | tls_mask = *toc_tls; | |
0d4792f7 AM |
13183 | } |
13184 | ||
13185 | /* Check that tls relocs are used with tls syms, and non-tls | |
13186 | relocs are used with non-tls syms. */ | |
cf35638d | 13187 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
13188 | && r_type != R_PPC64_NONE |
13189 | && (h == NULL | |
039b3fef AM |
13190 | || h->elf.root.type == bfd_link_hash_defined |
13191 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
13192 | && (IS_PPC64_TLS_RELOC (r_type) |
13193 | != (sym_type == STT_TLS | |
13194 | || (sym_type == STT_SECTION | |
13195 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 13196 | { |
727fc41e AM |
13197 | if (tls_mask != 0 |
13198 | && (r_type == R_PPC64_TLS | |
13199 | || r_type == R_PPC64_TLSGD | |
13200 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
13201 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
13202 | ; | |
13203 | else | |
25f53a85 | 13204 | info->callbacks->einfo |
1d483afe | 13205 | (!IS_PPC64_TLS_RELOC (r_type) |
bc30df16 AM |
13206 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
13207 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
25f53a85 | 13208 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
13209 | ppc64_elf_howto_table[r_type]->name, |
13210 | sym_name); | |
411e1bfb AM |
13211 | } |
13212 | ||
13213 | /* Ensure reloc mapping code below stays sane. */ | |
13214 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
13215 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
13216 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
13217 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
13218 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
13219 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
13220 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
13221 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
13222 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
13223 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
13224 | abort (); | |
0d4792f7 | 13225 | |
411e1bfb AM |
13226 | switch (r_type) |
13227 | { | |
13228 | default: | |
411e1bfb AM |
13229 | break; |
13230 | ||
ba761f19 AM |
13231 | case R_PPC64_LO_DS_OPT: |
13232 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
13233 | if ((insn & (0x3f << 26)) != 58u << 26) | |
13234 | abort (); | |
13235 | insn += (14u << 26) - (58u << 26); | |
13236 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
13237 | r_type = R_PPC64_TOC16_LO; | |
13238 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13239 | break; | |
13240 | ||
411e1bfb AM |
13241 | case R_PPC64_TOC16: |
13242 | case R_PPC64_TOC16_LO: | |
13243 | case R_PPC64_TOC16_DS: | |
13244 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
13245 | { |
13246 | /* Check for toc tls entries. */ | |
f961d9dd | 13247 | unsigned char *toc_tls; |
951fd09b | 13248 | int retval; |
411e1bfb | 13249 | |
3a71aa26 AM |
13250 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
13251 | &local_syms, rel, input_bfd); | |
951fd09b | 13252 | if (retval == 0) |
411e1bfb AM |
13253 | return FALSE; |
13254 | ||
13255 | if (toc_tls) | |
13256 | { | |
951fd09b | 13257 | tls_mask = *toc_tls; |
411e1bfb AM |
13258 | if (r_type == R_PPC64_TOC16_DS |
13259 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
13260 | { |
13261 | if (tls_mask != 0 | |
13262 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
13263 | goto toctprel; | |
13264 | } | |
411e1bfb | 13265 | else |
951fd09b AM |
13266 | { |
13267 | /* If we found a GD reloc pair, then we might be | |
13268 | doing a GD->IE transition. */ | |
13269 | if (retval == 2) | |
13270 | { | |
13271 | tls_gd = TLS_TPRELGD; | |
13272 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13273 | goto tls_ldgd_opt; |
951fd09b AM |
13274 | } |
13275 | else if (retval == 3) | |
13276 | { | |
13277 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 13278 | goto tls_ldgd_opt; |
951fd09b AM |
13279 | } |
13280 | } | |
411e1bfb AM |
13281 | } |
13282 | } | |
13283 | break; | |
13284 | ||
9d6ded02 AM |
13285 | case R_PPC64_GOT_TPREL16_HI: |
13286 | case R_PPC64_GOT_TPREL16_HA: | |
13287 | if (tls_mask != 0 | |
13288 | && (tls_mask & TLS_TPREL) == 0) | |
13289 | { | |
13290 | rel->r_offset -= d_offset; | |
13291 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
13292 | r_type = R_PPC64_NONE; | |
13293 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13294 | } | |
13295 | break; | |
13296 | ||
411e1bfb AM |
13297 | case R_PPC64_GOT_TPREL16_DS: |
13298 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
13299 | if (tls_mask != 0 |
13300 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13301 | { |
81407a69 | 13302 | toctprel: |
4fe5ca5b | 13303 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
13304 | insn &= 31 << 21; |
13305 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 13306 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 13307 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
13308 | if (toc_symndx != 0) |
13309 | { | |
13310 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13311 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13312 | /* We changed the symbol. Start over in order to |
13313 | get h, sym, sec etc. right. */ | |
13314 | rel--; | |
13315 | continue; | |
13316 | } | |
13317 | else | |
13318 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13319 | } |
13320 | break; | |
13321 | ||
13322 | case R_PPC64_TLS: | |
951fd09b AM |
13323 | if (tls_mask != 0 |
13324 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 13325 | { |
411e1bfb | 13326 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
13327 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
13328 | if (insn == 0) | |
411e1bfb | 13329 | abort (); |
411e1bfb | 13330 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 13331 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
13332 | PPC64_TPREL16_LO which is at low-order half-word. */ |
13333 | rel->r_offset += d_offset; | |
0d4792f7 AM |
13334 | r_type = R_PPC64_TPREL16_LO; |
13335 | if (toc_symndx != 0) | |
13336 | { | |
13337 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 13338 | rel->r_addend = toc_addend; |
0d4792f7 AM |
13339 | /* We changed the symbol. Start over in order to |
13340 | get h, sym, sec etc. right. */ | |
13341 | rel--; | |
13342 | continue; | |
13343 | } | |
13344 | else | |
13345 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
13346 | } |
13347 | break; | |
13348 | ||
411e1bfb AM |
13349 | case R_PPC64_GOT_TLSGD16_HI: |
13350 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
13351 | tls_gd = TLS_TPRELGD; |
13352 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13353 | goto tls_gdld_hi; | |
13354 | break; | |
13355 | ||
411e1bfb AM |
13356 | case R_PPC64_GOT_TLSLD16_HI: |
13357 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13358 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 13359 | { |
951fd09b AM |
13360 | tls_gdld_hi: |
13361 | if ((tls_mask & tls_gd) != 0) | |
13362 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13363 | + R_PPC64_GOT_TPREL16_DS); | |
13364 | else | |
411e1bfb | 13365 | { |
4fe5ca5b | 13366 | rel->r_offset -= d_offset; |
727ac201 | 13367 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 13368 | r_type = R_PPC64_NONE; |
411e1bfb | 13369 | } |
951fd09b | 13370 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
13371 | } |
13372 | break; | |
13373 | ||
951fd09b AM |
13374 | case R_PPC64_GOT_TLSGD16: |
13375 | case R_PPC64_GOT_TLSGD16_LO: | |
13376 | tls_gd = TLS_TPRELGD; | |
13377 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 13378 | goto tls_ldgd_opt; |
951fd09b | 13379 | break; |
411e1bfb | 13380 | |
951fd09b AM |
13381 | case R_PPC64_GOT_TLSLD16: |
13382 | case R_PPC64_GOT_TLSLD16_LO: | |
13383 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13384 | { | |
3a71aa26 | 13385 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
13386 | bfd_vma offset; |
13387 | ||
13388 | tls_ldgd_opt: | |
727fc41e AM |
13389 | offset = (bfd_vma) -1; |
13390 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
13391 | __tls_get_addr calls, we must trust that the call | |
13392 | stays with its arg setup insns, ie. that the next | |
13393 | reloc is the __tls_get_addr call associated with | |
13394 | the current reloc. Edit both insns. */ | |
13395 | if (input_section->has_tls_get_addr_call | |
13396 | && rel + 1 < relend | |
13397 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
13398 | htab->tls_get_addr, | |
13399 | htab->tls_get_addr_fd)) | |
13400 | offset = rel[1].r_offset; | |
102890f0 | 13401 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 13402 | { |
102890f0 | 13403 | /* IE */ |
3a71aa26 AM |
13404 | insn1 = bfd_get_32 (output_bfd, |
13405 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
13406 | insn1 &= (1 << 26) - (1 << 2); |
13407 | insn1 |= 58 << 26; /* ld */ | |
13408 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 13409 | if (offset != (bfd_vma) -1) |
f58d5a2d | 13410 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
13411 | if ((tls_mask & TLS_EXPLICIT) == 0) |
13412 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
13413 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 13414 | else |
102890f0 AM |
13415 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
13416 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13417 | } | |
13418 | else | |
13419 | { | |
13420 | /* LE */ | |
13421 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
13422 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13423 | if (tls_gd == 0) | |
951fd09b | 13424 | { |
102890f0 | 13425 | /* Was an LD reloc. */ |
1d483afe AM |
13426 | if (toc_symndx) |
13427 | sec = local_sections[toc_symndx]; | |
13428 | for (r_symndx = 0; | |
13429 | r_symndx < symtab_hdr->sh_info; | |
13430 | r_symndx++) | |
13431 | if (local_sections[r_symndx] == sec) | |
13432 | break; | |
13433 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13434 | r_symndx = STN_UNDEF; |
102890f0 | 13435 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13436 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
13437 | rel->r_addend -= (local_syms[r_symndx].st_value |
13438 | + sec->output_offset | |
13439 | + sec->output_section->vma); | |
951fd09b | 13440 | } |
102890f0 | 13441 | else if (toc_symndx != 0) |
3a71aa26 AM |
13442 | { |
13443 | r_symndx = toc_symndx; | |
13444 | rel->r_addend = toc_addend; | |
13445 | } | |
102890f0 AM |
13446 | r_type = R_PPC64_TPREL16_HA; |
13447 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
13448 | if (offset != (bfd_vma) -1) |
13449 | { | |
13450 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
13451 | R_PPC64_TPREL16_LO); | |
13452 | rel[1].r_offset = offset + d_offset; | |
13453 | rel[1].r_addend = rel->r_addend; | |
13454 | } | |
102890f0 | 13455 | } |
3a71aa26 AM |
13456 | bfd_put_32 (output_bfd, insn1, |
13457 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
13458 | if (offset != (bfd_vma) -1) |
13459 | { | |
13460 | insn3 = bfd_get_32 (output_bfd, | |
13461 | contents + offset + 4); | |
13462 | if (insn3 == NOP | |
13463 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13464 | { | |
13465 | rel[1].r_offset += 4; | |
13466 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13467 | insn2 = NOP; | |
13468 | } | |
13469 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13470 | } | |
13471 | if ((tls_mask & tls_gd) == 0 | |
13472 | && (tls_gd == 0 || toc_symndx != 0)) | |
13473 | { | |
13474 | /* We changed the symbol. Start over in order | |
13475 | to get h, sym, sec etc. right. */ | |
13476 | rel--; | |
13477 | continue; | |
13478 | } | |
13479 | } | |
13480 | break; | |
13481 | ||
13482 | case R_PPC64_TLSGD: | |
13483 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
13484 | { | |
13485 | unsigned int insn2, insn3; | |
13486 | bfd_vma offset = rel->r_offset; | |
13487 | ||
13488 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13489 | { | |
13490 | /* IE */ | |
13491 | r_type = R_PPC64_NONE; | |
13492 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
13493 | } | |
13494 | else | |
13495 | { | |
13496 | /* LE */ | |
13497 | if (toc_symndx != 0) | |
13498 | { | |
13499 | r_symndx = toc_symndx; | |
13500 | rel->r_addend = toc_addend; | |
13501 | } | |
13502 | r_type = R_PPC64_TPREL16_LO; | |
13503 | rel->r_offset = offset + d_offset; | |
13504 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
13505 | } | |
13506 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13507 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13508 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13509 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
13510 | insn3 = bfd_get_32 (output_bfd, |
13511 | contents + offset + 4); | |
102890f0 AM |
13512 | if (insn3 == NOP |
13513 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13514 | { | |
727fc41e | 13515 | rel->r_offset += 4; |
3a71aa26 AM |
13516 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
13517 | insn2 = NOP; | |
102890f0 | 13518 | } |
102890f0 | 13519 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 13520 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 13521 | { |
102890f0 AM |
13522 | rel--; |
13523 | continue; | |
411e1bfb | 13524 | } |
411e1bfb | 13525 | } |
411e1bfb AM |
13526 | break; |
13527 | ||
727fc41e AM |
13528 | case R_PPC64_TLSLD: |
13529 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
13530 | { | |
13531 | unsigned int insn2, insn3; | |
13532 | bfd_vma offset = rel->r_offset; | |
13533 | ||
13534 | if (toc_symndx) | |
13535 | sec = local_sections[toc_symndx]; | |
13536 | for (r_symndx = 0; | |
13537 | r_symndx < symtab_hdr->sh_info; | |
13538 | r_symndx++) | |
13539 | if (local_sections[r_symndx] == sec) | |
13540 | break; | |
13541 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 13542 | r_symndx = STN_UNDEF; |
727fc41e | 13543 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 13544 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
13545 | rel->r_addend -= (local_syms[r_symndx].st_value |
13546 | + sec->output_offset | |
13547 | + sec->output_section->vma); | |
13548 | ||
13549 | r_type = R_PPC64_TPREL16_LO; | |
13550 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13551 | rel->r_offset = offset + d_offset; | |
13552 | /* Zap the reloc on the _tls_get_addr call too. */ | |
13553 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 13554 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
13555 | insn2 = 0x38630000; /* addi 3,3,0 */ |
13556 | insn3 = bfd_get_32 (output_bfd, | |
13557 | contents + offset + 4); | |
13558 | if (insn3 == NOP | |
13559 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
13560 | { | |
13561 | rel->r_offset += 4; | |
13562 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
13563 | insn2 = NOP; | |
13564 | } | |
13565 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
13566 | rel--; | |
13567 | continue; | |
13568 | } | |
13569 | break; | |
13570 | ||
411e1bfb | 13571 | case R_PPC64_DTPMOD64: |
951fd09b AM |
13572 | if (rel + 1 < relend |
13573 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
13574 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 13575 | { |
951fd09b AM |
13576 | if ((tls_mask & TLS_GD) == 0) |
13577 | { | |
13578 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
13579 | if ((tls_mask & TLS_TPRELGD) != 0) | |
13580 | r_type = R_PPC64_TPREL64; | |
13581 | else | |
13582 | { | |
4ce794b7 | 13583 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
13584 | r_type = R_PPC64_NONE; |
13585 | } | |
13586 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13587 | } | |
13588 | } | |
13589 | else | |
13590 | { | |
13591 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 13592 | { |
4ce794b7 | 13593 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 13594 | r_type = R_PPC64_NONE; |
951fd09b | 13595 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 13596 | } |
411e1bfb AM |
13597 | } |
13598 | break; | |
13599 | ||
13600 | case R_PPC64_TPREL64: | |
951fd09b | 13601 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
13602 | { |
13603 | r_type = R_PPC64_NONE; | |
13604 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13605 | } | |
13606 | break; | |
52a82034 AM |
13607 | |
13608 | case R_PPC64_REL16_HA: | |
13609 | /* If we are generating a non-PIC executable, edit | |
13610 | . 0: addis 2,12,.TOC.-0b@ha | |
13611 | . addi 2,2,.TOC.-0b@l | |
13612 | used by ELFv2 global entry points to set up r2, to | |
13613 | . lis 2,.TOC.@ha | |
13614 | . addi 2,2,.TOC.@l | |
13615 | if .TOC. is in range. */ | |
13616 | if (!info->shared | |
810d4e75 | 13617 | && !info->traditional_format |
52a82034 AM |
13618 | && h != NULL && &h->elf == htab->elf.hgot |
13619 | && rel + 1 < relend | |
13620 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
13621 | && rel[1].r_offset == rel->r_offset + 4 | |
13622 | && rel[1].r_addend == rel->r_addend + 4 | |
13623 | && relocation + 0x80008000 <= 0xffffffff) | |
13624 | { | |
13625 | unsigned int insn1, insn2; | |
13626 | bfd_vma offset = rel->r_offset - d_offset; | |
13627 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
13628 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
13629 | if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */ | |
13630 | && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */) | |
13631 | { | |
13632 | r_type = R_PPC64_ADDR16_HA; | |
13633 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
13634 | rel->r_addend -= d_offset; | |
13635 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
13636 | rel[1].r_addend -= d_offset + 4; | |
13637 | bfd_put_32 (output_bfd, 0x3c400000, contents + offset); | |
13638 | } | |
13639 | } | |
13640 | break; | |
411e1bfb AM |
13641 | } |
13642 | ||
13643 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 13644 | insn = 0; |
b25116a9 AM |
13645 | max_br_offset = 1 << 25; |
13646 | addend = rel->r_addend; | |
bc30df16 | 13647 | reloc_dest = DEST_NORMAL; |
65f38f15 | 13648 | switch (r_type) |
5bd4f169 AM |
13649 | { |
13650 | default: | |
65f38f15 | 13651 | break; |
5bd4f169 | 13652 | |
3b421ab3 AM |
13653 | case R_PPC64_TOCSAVE: |
13654 | if (relocation + addend == (rel->r_offset | |
13655 | + input_section->output_offset | |
13656 | + input_section->output_section->vma) | |
13657 | && tocsave_find (htab, NO_INSERT, | |
13658 | &local_syms, rel, input_bfd)) | |
13659 | { | |
13660 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13661 | if (insn == NOP | |
13662 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
13663 | bfd_put_32 (input_bfd, |
13664 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
13665 | contents + rel->r_offset); |
13666 | } | |
13667 | break; | |
13668 | ||
65f38f15 AM |
13669 | /* Branch taken prediction relocations. */ |
13670 | case R_PPC64_ADDR14_BRTAKEN: | |
13671 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
13672 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
13673 | /* Fall thru. */ | |
65f38f15 | 13674 | |
86c76c7b | 13675 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
13676 | case R_PPC64_ADDR14_BRNTAKEN: |
13677 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
13678 | insn |= bfd_get_32 (output_bfd, |
13679 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 13680 | /* Fall thru. */ |
86c76c7b | 13681 | |
b25116a9 AM |
13682 | case R_PPC64_REL14: |
13683 | max_br_offset = 1 << 15; | |
13684 | /* Fall thru. */ | |
5bd4f169 | 13685 | |
65f38f15 | 13686 | case R_PPC64_REL24: |
ad8e1ba5 AM |
13687 | /* Calls to functions with a different TOC, such as calls to |
13688 | shared objects, need to alter the TOC pointer. This is | |
13689 | done using a linkage stub. A REL24 branching to these | |
13690 | linkage stubs needs to be followed by a nop, as the nop | |
13691 | will be replaced with an instruction to restore the TOC | |
13692 | base pointer. */ | |
8387904d | 13693 | fdh = h; |
b31867b6 AM |
13694 | if (h != NULL |
13695 | && h->oh != NULL | |
13696 | && h->oh->is_func_descriptor) | |
13697 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
13698 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
13699 | htab); | |
6abec6bc | 13700 | if (stub_entry != NULL |
ad8e1ba5 | 13701 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 13702 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
13703 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
13704 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 13705 | { |
b25116a9 | 13706 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 13707 | |
ba8ca3e7 AM |
13708 | /* All of these stubs will modify r2, so there must be a |
13709 | branch and link followed by a nop. The nop is | |
13710 | replaced by an insn to restore r2. */ | |
eea6121a | 13711 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 13712 | { |
ba8ca3e7 AM |
13713 | unsigned long br; |
13714 | ||
13715 | br = bfd_get_32 (input_bfd, | |
13716 | contents + rel->r_offset); | |
13717 | if ((br & 1) != 0) | |
41bd81ab | 13718 | { |
ba8ca3e7 AM |
13719 | unsigned long nop; |
13720 | ||
13721 | nop = bfd_get_32 (input_bfd, | |
13722 | contents + rel->r_offset + 4); | |
13723 | if (nop == NOP | |
13724 | || nop == CROR_151515 || nop == CROR_313131) | |
a7f2871e | 13725 | { |
ba8ca3e7 AM |
13726 | if (h != NULL |
13727 | && (h == htab->tls_get_addr_fd | |
13728 | || h == htab->tls_get_addr) | |
e7d1c40c | 13729 | && !htab->params->no_tls_get_addr_opt) |
ba8ca3e7 AM |
13730 | { |
13731 | /* Special stub used, leave nop alone. */ | |
13732 | } | |
13733 | else | |
a078d95a AM |
13734 | bfd_put_32 (input_bfd, |
13735 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
13736 | contents + rel->r_offset + 4); |
13737 | can_plt_call = TRUE; | |
a7f2871e | 13738 | } |
41bd81ab | 13739 | } |
5bd4f169 | 13740 | } |
721956f4 | 13741 | |
ba8ca3e7 | 13742 | if (!can_plt_call && h != NULL) |
721956f4 | 13743 | { |
ba8ca3e7 AM |
13744 | const char *name = h->elf.root.root.string; |
13745 | ||
13746 | if (*name == '.') | |
13747 | ++name; | |
13748 | ||
13749 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
13750 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 13751 | { |
ba8ca3e7 AM |
13752 | /* Allow crt1 branch to go via a toc adjusting |
13753 | stub. Other calls that never return could do | |
13754 | the same, if we could detect such. */ | |
b25116a9 | 13755 | can_plt_call = TRUE; |
6ab189d5 | 13756 | } |
ba8ca3e7 AM |
13757 | } |
13758 | ||
13759 | if (!can_plt_call) | |
13760 | { | |
13761 | /* g++ as of 20130507 emits self-calls without a | |
13762 | following nop. This is arguably wrong since we | |
13763 | have conflicting information. On the one hand a | |
13764 | global symbol and on the other a local call | |
13765 | sequence, but don't error for this special case. | |
13766 | It isn't possible to cheaply verify we have | |
13767 | exactly such a call. Allow all calls to the same | |
13768 | section. */ | |
13769 | asection *code_sec = sec; | |
13770 | ||
13771 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 13772 | { |
ba8ca3e7 AM |
13773 | bfd_vma off = (relocation + addend |
13774 | - sec->output_section->vma | |
13775 | - sec->output_offset); | |
bc30df16 | 13776 | |
ba8ca3e7 | 13777 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 13778 | } |
ba8ca3e7 AM |
13779 | if (code_sec == input_section) |
13780 | can_plt_call = TRUE; | |
13781 | } | |
13782 | ||
13783 | if (!can_plt_call) | |
13784 | { | |
4805fc55 AM |
13785 | if (stub_entry->stub_type == ppc_stub_plt_call |
13786 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13787 | info->callbacks->einfo | |
13788 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13789 | "recompile with -fPIC\n"), | |
13790 | input_bfd, input_section, rel->r_offset, sym_name); | |
13791 | else | |
13792 | info->callbacks->einfo | |
13793 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
13794 | "(-mcmodel=small toc adjust stub)\n"), | |
13795 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
13796 | |
13797 | bfd_set_error (bfd_error_bad_value); | |
13798 | ret = FALSE; | |
721956f4 AM |
13799 | } |
13800 | ||
b25116a9 | 13801 | if (can_plt_call |
794e51c0 AM |
13802 | && (stub_entry->stub_type == ppc_stub_plt_call |
13803 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
13804 | unresolved_reloc = FALSE; |
13805 | } | |
13806 | ||
6abec6bc AM |
13807 | if ((stub_entry == NULL |
13808 | || stub_entry->stub_type == ppc_stub_long_branch | |
13809 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
13810 | && get_opd_info (sec) != NULL) |
13811 | { | |
13812 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
13813 | bfd_vma off = (relocation + addend |
13814 | - sec->output_section->vma | |
13815 | - sec->output_offset); | |
aef36ac1 | 13816 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
13817 | if (dest != (bfd_vma) -1) |
13818 | { | |
13819 | relocation = dest; | |
13820 | addend = 0; | |
bc30df16 | 13821 | reloc_dest = DEST_OPD; |
8387904d AM |
13822 | } |
13823 | } | |
13824 | ||
b25116a9 AM |
13825 | /* If the branch is out of reach we ought to have a long |
13826 | branch stub. */ | |
13827 | from = (rel->r_offset | |
13828 | + input_section->output_offset | |
13829 | + input_section->output_section->vma); | |
13830 | ||
6911b7dc AM |
13831 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
13832 | ? fdh->elf.other | |
13833 | : sym->st_other); | |
13834 | ||
6abec6bc AM |
13835 | if (stub_entry != NULL |
13836 | && (stub_entry->stub_type == ppc_stub_long_branch | |
13837 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
13838 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
13839 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
13840 | || (relocation + addend - from + max_br_offset | |
13841 | < 2 * max_br_offset))) | |
13842 | /* Don't use the stub if this branch is in range. */ | |
13843 | stub_entry = NULL; | |
b25116a9 AM |
13844 | |
13845 | if (stub_entry != NULL) | |
13846 | { | |
13847 | /* Munge up the value and addend so that we call the stub | |
13848 | rather than the procedure directly. */ | |
13849 | relocation = (stub_entry->stub_offset | |
13850 | + stub_entry->stub_sec->output_offset | |
13851 | + stub_entry->stub_sec->output_section->vma); | |
13852 | addend = 0; | |
bc30df16 | 13853 | reloc_dest = DEST_STUB; |
3b421ab3 | 13854 | |
794e51c0 AM |
13855 | if ((stub_entry->stub_type == ppc_stub_plt_call |
13856 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
13857 | && (ALWAYS_EMIT_R2SAVE | |
13858 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
13859 | && rel + 1 < relend |
13860 | && rel[1].r_offset == rel->r_offset + 4 | |
13861 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
13862 | relocation += 4; | |
b25116a9 AM |
13863 | } |
13864 | ||
13865 | if (insn != 0) | |
13866 | { | |
794e51c0 | 13867 | if (is_isa_v2) |
721956f4 | 13868 | { |
b25116a9 AM |
13869 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
13870 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
13871 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
13872 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
13873 | insn |= 0x02 << 21; | |
13874 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
13875 | insn |= 0x08 << 21; | |
13876 | else | |
13877 | break; | |
13878 | } | |
13879 | else | |
13880 | { | |
13881 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 13882 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 13883 | insn ^= 0x01 << 21; |
721956f4 | 13884 | } |
b25116a9 AM |
13885 | |
13886 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 13887 | } |
e86ce104 | 13888 | |
06da1e8e AM |
13889 | /* NOP out calls to undefined weak functions. |
13890 | We can thus call a weak function without first | |
13891 | checking whether the function is defined. */ | |
b25116a9 | 13892 | else if (h != NULL |
039b3fef | 13893 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 13894 | && h->elf.dynindx == -1 |
b25116a9 AM |
13895 | && r_type == R_PPC64_REL24 |
13896 | && relocation == 0 | |
4cc603a5 | 13897 | && addend == 0) |
e86ce104 | 13898 | { |
06da1e8e AM |
13899 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
13900 | continue; | |
e86ce104 | 13901 | } |
65f38f15 AM |
13902 | break; |
13903 | } | |
5bd4f169 | 13904 | |
65f38f15 | 13905 | /* Set `addend'. */ |
411e1bfb | 13906 | tls_type = 0; |
65f38f15 AM |
13907 | switch (r_type) |
13908 | { | |
13909 | default: | |
25f53a85 | 13910 | info->callbacks->einfo |
bc30df16 | 13911 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
d003868e | 13912 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 13913 | |
65f38f15 | 13914 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13915 | ret = FALSE; |
65f38f15 | 13916 | continue; |
5bd4f169 | 13917 | |
65f38f15 | 13918 | case R_PPC64_NONE: |
411e1bfb | 13919 | case R_PPC64_TLS: |
727fc41e AM |
13920 | case R_PPC64_TLSGD: |
13921 | case R_PPC64_TLSLD: | |
3b421ab3 | 13922 | case R_PPC64_TOCSAVE: |
04c9666a AM |
13923 | case R_PPC64_GNU_VTINHERIT: |
13924 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 13925 | continue; |
5bd4f169 AM |
13926 | |
13927 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
13928 | address in the GOT as relocation value instead of the | |
411e1bfb | 13929 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 13930 | symbol and put the symbol value there. */ |
411e1bfb AM |
13931 | case R_PPC64_GOT_TLSGD16: |
13932 | case R_PPC64_GOT_TLSGD16_LO: | |
13933 | case R_PPC64_GOT_TLSGD16_HI: | |
13934 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 13935 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
13936 | goto dogot; |
13937 | ||
13938 | case R_PPC64_GOT_TLSLD16: | |
13939 | case R_PPC64_GOT_TLSLD16_LO: | |
13940 | case R_PPC64_GOT_TLSLD16_HI: | |
13941 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 13942 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
13943 | goto dogot; |
13944 | ||
13945 | case R_PPC64_GOT_TPREL16_DS: | |
13946 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13947 | case R_PPC64_GOT_TPREL16_HI: | |
13948 | case R_PPC64_GOT_TPREL16_HA: | |
13949 | tls_type = TLS_TLS | TLS_TPREL; | |
13950 | goto dogot; | |
13951 | ||
13952 | case R_PPC64_GOT_DTPREL16_DS: | |
13953 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13954 | case R_PPC64_GOT_DTPREL16_HI: | |
13955 | case R_PPC64_GOT_DTPREL16_HA: | |
13956 | tls_type = TLS_TLS | TLS_DTPREL; | |
13957 | goto dogot; | |
13958 | ||
65f38f15 AM |
13959 | case R_PPC64_GOT16: |
13960 | case R_PPC64_GOT16_LO: | |
13961 | case R_PPC64_GOT16_HI: | |
13962 | case R_PPC64_GOT16_HA: | |
13963 | case R_PPC64_GOT16_DS: | |
13964 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 13965 | dogot: |
5bd4f169 AM |
13966 | { |
13967 | /* Relocation is to the entry for this symbol in the global | |
13968 | offset table. */ | |
e717da7e | 13969 | asection *got; |
d881513a | 13970 | bfd_vma *offp; |
5bd4f169 | 13971 | bfd_vma off; |
d881513a | 13972 | unsigned long indx = 0; |
927be08e | 13973 | struct got_entry *ent; |
65f38f15 | 13974 | |
d881513a AM |
13975 | if (tls_type == (TLS_TLS | TLS_LD) |
13976 | && (h == NULL | |
f5385ebf | 13977 | || !h->elf.def_dynamic)) |
927be08e | 13978 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 13979 | else |
5bd4f169 | 13980 | { |
5bd4f169 | 13981 | |
d881513a AM |
13982 | if (h != NULL) |
13983 | { | |
13984 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
13985 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
13986 | &h->elf) | |
d881513a | 13987 | || (info->shared |
afe397ea | 13988 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
13989 | /* This is actually a static link, or it is a |
13990 | -Bsymbolic link and the symbol is defined | |
13991 | locally, or the symbol was forced to be local | |
13992 | because of a version file. */ | |
13993 | ; | |
13994 | else | |
13995 | { | |
14acf4dc | 13996 | BFD_ASSERT (h->elf.dynindx != -1); |
039b3fef | 13997 | indx = h->elf.dynindx; |
d881513a AM |
13998 | unresolved_reloc = FALSE; |
13999 | } | |
039b3fef | 14000 | ent = h->elf.got.glist; |
d881513a | 14001 | } |
411e1bfb | 14002 | else |
5bd4f169 | 14003 | { |
d881513a AM |
14004 | if (local_got_ents == NULL) |
14005 | abort (); | |
14006 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 14007 | } |
d881513a AM |
14008 | |
14009 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 14010 | if (ent->addend == orig_rel.r_addend |
e717da7e | 14011 | && ent->owner == input_bfd |
d881513a AM |
14012 | && ent->tls_type == tls_type) |
14013 | break; | |
5bd4f169 | 14014 | } |
411e1bfb | 14015 | |
927be08e AM |
14016 | if (ent == NULL) |
14017 | abort (); | |
14018 | if (ent->is_indirect) | |
14019 | ent = ent->got.ent; | |
14020 | offp = &ent->got.offset; | |
14021 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
14022 | if (got == NULL) |
14023 | abort (); | |
14024 | ||
411e1bfb AM |
14025 | /* The offset must always be a multiple of 8. We use the |
14026 | least significant bit to record whether we have already | |
14027 | processed this entry. */ | |
d881513a | 14028 | off = *offp; |
411e1bfb AM |
14029 | if ((off & 1) != 0) |
14030 | off &= ~1; | |
5bd4f169 AM |
14031 | else |
14032 | { | |
411e1bfb AM |
14033 | /* Generate relocs for the dynamic linker, except in |
14034 | the case of TLSLD where we'll use one entry per | |
14035 | module. */ | |
25f23106 AM |
14036 | asection *relgot; |
14037 | bfd_boolean ifunc; | |
e717da7e | 14038 | |
d881513a | 14039 | *offp = off | 1; |
25f23106 AM |
14040 | relgot = NULL; |
14041 | ifunc = (h != NULL | |
14042 | ? h->elf.type == STT_GNU_IFUNC | |
14043 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 14044 | if (ifunc) |
33e44f2e | 14045 | relgot = htab->elf.irelplt; |
19e08130 AM |
14046 | else if ((info->shared || indx != 0) |
14047 | && (h == NULL | |
14048 | || (tls_type == (TLS_TLS | TLS_LD) | |
14049 | && !h->elf.def_dynamic) | |
14050 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
14051 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
14052 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
25f23106 | 14053 | if (relgot != NULL) |
5bd4f169 | 14054 | { |
e717da7e AM |
14055 | outrel.r_offset = (got->output_section->vma |
14056 | + got->output_offset | |
411e1bfb | 14057 | + off); |
4cc603a5 | 14058 | outrel.r_addend = addend; |
d881513a | 14059 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 14060 | { |
411e1bfb | 14061 | outrel.r_addend = 0; |
e515b051 | 14062 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
14063 | if (tls_type == (TLS_TLS | TLS_GD)) |
14064 | { | |
e717da7e AM |
14065 | loc = relgot->contents; |
14066 | loc += (relgot->reloc_count++ | |
d881513a AM |
14067 | * sizeof (Elf64_External_Rela)); |
14068 | bfd_elf64_swap_reloca_out (output_bfd, | |
14069 | &outrel, loc); | |
e515b051 | 14070 | outrel.r_offset += 8; |
4cc603a5 | 14071 | outrel.r_addend = addend; |
d881513a AM |
14072 | outrel.r_info |
14073 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 14074 | } |
411e1bfb | 14075 | } |
951fd09b | 14076 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 14077 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 14078 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14079 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
14080 | else if (indx != 0) |
14081 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
14082 | else | |
81407a69 | 14083 | { |
25f23106 AM |
14084 | if (ifunc) |
14085 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14086 | else | |
14087 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
14088 | |
14089 | /* Write the .got section contents for the sake | |
14090 | of prelink. */ | |
e717da7e | 14091 | loc = got->contents + off; |
23fbd6fa JJ |
14092 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
14093 | loc); | |
81407a69 | 14094 | } |
81407a69 AM |
14095 | |
14096 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
14097 | { |
14098 | outrel.r_addend += relocation; | |
14099 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 14100 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 14101 | } |
e717da7e AM |
14102 | loc = relgot->contents; |
14103 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
14104 | * sizeof (Elf64_External_Rela)); |
14105 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
14106 | } | |
14107 | ||
ad8e1ba5 | 14108 | /* Init the .got section contents here if we're not |
81407a69 | 14109 | emitting a reloc. */ |
d881513a | 14110 | else |
411e1bfb | 14111 | { |
4cc603a5 | 14112 | relocation += addend; |
7b609f53 AM |
14113 | if (tls_type == (TLS_TLS | TLS_LD)) |
14114 | relocation = 1; | |
14115 | else if (tls_type != 0) | |
411e1bfb | 14116 | { |
e1918d23 | 14117 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 14118 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 14119 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 14120 | |
7b609f53 AM |
14121 | if (tls_type == (TLS_TLS | TLS_GD)) |
14122 | { | |
14123 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 14124 | got->contents + off + 8); |
7b609f53 AM |
14125 | relocation = 1; |
14126 | } | |
411e1bfb | 14127 | } |
7b609f53 | 14128 | |
411e1bfb | 14129 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 14130 | got->contents + off); |
5bd4f169 AM |
14131 | } |
14132 | } | |
14133 | ||
65f38f15 AM |
14134 | if (off >= (bfd_vma) -2) |
14135 | abort (); | |
14136 | ||
bf102f86 AM |
14137 | relocation = got->output_section->vma + got->output_offset + off; |
14138 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 14139 | } |
65f38f15 AM |
14140 | break; |
14141 | ||
14142 | case R_PPC64_PLT16_HA: | |
14143 | case R_PPC64_PLT16_HI: | |
14144 | case R_PPC64_PLT16_LO: | |
14145 | case R_PPC64_PLT32: | |
14146 | case R_PPC64_PLT64: | |
14147 | /* Relocation is to the entry for this symbol in the | |
14148 | procedure linkage table. */ | |
14149 | ||
14150 | /* Resolve a PLT reloc against a local symbol directly, | |
14151 | without using the procedure linkage table. */ | |
14152 | if (h == NULL) | |
14153 | break; | |
14154 | ||
411e1bfb AM |
14155 | /* It's possible that we didn't make a PLT entry for this |
14156 | symbol. This happens when statically linking PIC code, | |
14157 | or when using -Bsymbolic. Go find a match if there is a | |
14158 | PLT entry. */ | |
33e44f2e | 14159 | if (htab->elf.splt != NULL) |
65f38f15 | 14160 | { |
411e1bfb | 14161 | struct plt_entry *ent; |
039b3fef | 14162 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
a345bc8d AM |
14163 | if (ent->plt.offset != (bfd_vma) -1 |
14164 | && ent->addend == orig_rel.r_addend) | |
411e1bfb | 14165 | { |
33e44f2e AM |
14166 | relocation = (htab->elf.splt->output_section->vma |
14167 | + htab->elf.splt->output_offset | |
411e1bfb AM |
14168 | + ent->plt.offset); |
14169 | unresolved_reloc = FALSE; | |
a345bc8d | 14170 | break; |
411e1bfb | 14171 | } |
65f38f15 | 14172 | } |
65f38f15 | 14173 | break; |
5bd4f169 | 14174 | |
0b13192e AM |
14175 | case R_PPC64_TOC: |
14176 | /* Relocation value is TOC base. */ | |
14177 | relocation = TOCstart; | |
cf35638d | 14178 | if (r_symndx == STN_UNDEF) |
0b13192e | 14179 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
14180 | else if (unresolved_reloc) |
14181 | ; | |
14182 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
14183 | relocation += htab->stub_group[sec->id].toc_off; |
14184 | else | |
14185 | unresolved_reloc = TRUE; | |
ab96bf03 | 14186 | goto dodyn; |
0b13192e | 14187 | |
5bd4f169 AM |
14188 | /* TOC16 relocs. We want the offset relative to the TOC base, |
14189 | which is the address of the start of the TOC plus 0x8000. | |
14190 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
14191 | in this order. */ | |
65f38f15 AM |
14192 | case R_PPC64_TOC16: |
14193 | case R_PPC64_TOC16_LO: | |
14194 | case R_PPC64_TOC16_HI: | |
14195 | case R_PPC64_TOC16_DS: | |
14196 | case R_PPC64_TOC16_LO_DS: | |
14197 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 14198 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
14199 | break; |
14200 | ||
14201 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
14202 | case R_PPC64_SECTOFF: |
14203 | case R_PPC64_SECTOFF_LO: | |
14204 | case R_PPC64_SECTOFF_HI: | |
14205 | case R_PPC64_SECTOFF_DS: | |
14206 | case R_PPC64_SECTOFF_LO_DS: | |
14207 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 14208 | if (sec != NULL) |
65f38f15 | 14209 | addend -= sec->output_section->vma; |
5bd4f169 AM |
14210 | break; |
14211 | ||
25f23106 AM |
14212 | case R_PPC64_REL16: |
14213 | case R_PPC64_REL16_LO: | |
14214 | case R_PPC64_REL16_HI: | |
14215 | case R_PPC64_REL16_HA: | |
14216 | break; | |
14217 | ||
721956f4 AM |
14218 | case R_PPC64_REL14: |
14219 | case R_PPC64_REL14_BRNTAKEN: | |
14220 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
14221 | case R_PPC64_REL24: |
14222 | break; | |
14223 | ||
411e1bfb AM |
14224 | case R_PPC64_TPREL16: |
14225 | case R_PPC64_TPREL16_LO: | |
14226 | case R_PPC64_TPREL16_HI: | |
14227 | case R_PPC64_TPREL16_HA: | |
14228 | case R_PPC64_TPREL16_DS: | |
14229 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
14230 | case R_PPC64_TPREL16_HIGH: |
14231 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
14232 | case R_PPC64_TPREL16_HIGHER: |
14233 | case R_PPC64_TPREL16_HIGHERA: | |
14234 | case R_PPC64_TPREL16_HIGHEST: | |
14235 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
14236 | if (h != NULL |
14237 | && h->elf.root.type == bfd_link_hash_undefweak | |
14238 | && h->elf.dynindx == -1) | |
14239 | { | |
14240 | /* Make this relocation against an undefined weak symbol | |
14241 | resolve to zero. This is really just a tweak, since | |
14242 | code using weak externs ought to check that they are | |
14243 | defined before using them. */ | |
14244 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
14245 | ||
14246 | insn = bfd_get_32 (output_bfd, p); | |
14247 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
14248 | if (insn != 0) | |
14249 | bfd_put_32 (output_bfd, insn, p); | |
14250 | break; | |
14251 | } | |
e1918d23 | 14252 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
14253 | if (info->shared) |
14254 | /* The TPREL16 relocs shouldn't really be used in shared | |
14255 | libs as they will result in DT_TEXTREL being set, but | |
14256 | support them anyway. */ | |
14257 | goto dodyn; | |
14258 | break; | |
14259 | ||
14260 | case R_PPC64_DTPREL16: | |
14261 | case R_PPC64_DTPREL16_LO: | |
14262 | case R_PPC64_DTPREL16_HI: | |
14263 | case R_PPC64_DTPREL16_HA: | |
14264 | case R_PPC64_DTPREL16_DS: | |
14265 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
14266 | case R_PPC64_DTPREL16_HIGH: |
14267 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
14268 | case R_PPC64_DTPREL16_HIGHER: |
14269 | case R_PPC64_DTPREL16_HIGHERA: | |
14270 | case R_PPC64_DTPREL16_HIGHEST: | |
14271 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 14272 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
14273 | break; |
14274 | ||
45965137 AM |
14275 | case R_PPC64_ADDR64_LOCAL: |
14276 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
14277 | ? h->elf.other | |
14278 | : sym->st_other); | |
14279 | break; | |
14280 | ||
e515b051 AM |
14281 | case R_PPC64_DTPMOD64: |
14282 | relocation = 1; | |
14283 | addend = 0; | |
14284 | goto dodyn; | |
14285 | ||
411e1bfb | 14286 | case R_PPC64_TPREL64: |
e1918d23 | 14287 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
14288 | goto dodyn; |
14289 | ||
14290 | case R_PPC64_DTPREL64: | |
e1918d23 | 14291 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
14292 | /* Fall thru */ |
14293 | ||
65f38f15 AM |
14294 | /* Relocations that may need to be propagated if this is a |
14295 | dynamic object. */ | |
04c9666a | 14296 | case R_PPC64_REL30: |
65f38f15 AM |
14297 | case R_PPC64_REL32: |
14298 | case R_PPC64_REL64: | |
14299 | case R_PPC64_ADDR14: | |
14300 | case R_PPC64_ADDR14_BRNTAKEN: | |
14301 | case R_PPC64_ADDR14_BRTAKEN: | |
14302 | case R_PPC64_ADDR16: | |
14303 | case R_PPC64_ADDR16_DS: | |
14304 | case R_PPC64_ADDR16_HA: | |
14305 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
14306 | case R_PPC64_ADDR16_HIGH: |
14307 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14308 | case R_PPC64_ADDR16_HIGHER: |
14309 | case R_PPC64_ADDR16_HIGHERA: | |
14310 | case R_PPC64_ADDR16_HIGHEST: | |
14311 | case R_PPC64_ADDR16_HIGHESTA: | |
14312 | case R_PPC64_ADDR16_LO: | |
14313 | case R_PPC64_ADDR16_LO_DS: | |
14314 | case R_PPC64_ADDR24: | |
65f38f15 AM |
14315 | case R_PPC64_ADDR32: |
14316 | case R_PPC64_ADDR64: | |
14317 | case R_PPC64_UADDR16: | |
14318 | case R_PPC64_UADDR32: | |
14319 | case R_PPC64_UADDR64: | |
411e1bfb | 14320 | dodyn: |
5d1634d7 | 14321 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
14322 | break; |
14323 | ||
41bd81ab AM |
14324 | if (NO_OPD_RELOCS && is_opd) |
14325 | break; | |
14326 | ||
65f38f15 | 14327 | if ((info->shared |
4e795f50 | 14328 | && (h == NULL |
039b3fef AM |
14329 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
14330 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 14331 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 14332 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
14333 | || (ELIMINATE_COPY_RELOCS |
14334 | && !info->shared | |
65f38f15 | 14335 | && h != NULL |
039b3fef | 14336 | && h->elf.dynindx != -1 |
f5385ebf | 14337 | && !h->elf.non_got_ref |
25f23106 AM |
14338 | && !h->elf.def_regular) |
14339 | || (!info->shared | |
14340 | && (h != NULL | |
14341 | ? h->elf.type == STT_GNU_IFUNC | |
14342 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 14343 | { |
b34976b6 | 14344 | bfd_boolean skip, relocate; |
65f38f15 | 14345 | asection *sreloc; |
1cf1f670 | 14346 | bfd_vma out_off; |
65f38f15 AM |
14347 | |
14348 | /* When generating a dynamic object, these relocations | |
14349 | are copied into the output file to be resolved at run | |
14350 | time. */ | |
14351 | ||
b34976b6 AM |
14352 | skip = FALSE; |
14353 | relocate = FALSE; | |
65f38f15 | 14354 | |
1cf1f670 AM |
14355 | out_off = _bfd_elf_section_offset (output_bfd, info, |
14356 | input_section, rel->r_offset); | |
14357 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 14358 | skip = TRUE; |
1cf1f670 | 14359 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 14360 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
14361 | out_off += (input_section->output_section->vma |
14362 | + input_section->output_offset); | |
14363 | outrel.r_offset = out_off; | |
411e1bfb | 14364 | outrel.r_addend = rel->r_addend; |
65f38f15 | 14365 | |
1cf1f670 AM |
14366 | /* Optimize unaligned reloc use. */ |
14367 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
14368 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
14369 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
14370 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
14371 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
14372 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
14373 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
14374 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
14375 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
14376 | ||
65f38f15 | 14377 | if (skip) |
0bb2d96a | 14378 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 14379 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
14380 | && !is_opd |
14381 | && r_type != R_PPC64_TOC) | |
14acf4dc MR |
14382 | { |
14383 | BFD_ASSERT (h->elf.dynindx != -1); | |
14384 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
14385 | } | |
65f38f15 AM |
14386 | else |
14387 | { | |
41bd81ab AM |
14388 | /* This symbol is local, or marked to become local, |
14389 | or this is an opd section reloc which must point | |
14390 | at a local function. */ | |
65f38f15 | 14391 | outrel.r_addend += relocation; |
e86ce104 | 14392 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 14393 | { |
3fad3c7c | 14394 | if (is_opd && h != NULL) |
afbe61cf AM |
14395 | { |
14396 | /* Lie about opd entries. This case occurs | |
14397 | when building shared libraries and we | |
14398 | reference a function in another shared | |
3fad3c7c AM |
14399 | lib. The same thing happens for a weak |
14400 | definition in an application that's | |
14401 | overridden by a strong definition in a | |
14402 | shared lib. (I believe this is a generic | |
14403 | bug in binutils handling of weak syms.) | |
14404 | In these cases we won't use the opd | |
1e2f5b6e | 14405 | entry in this lib. */ |
b34976b6 | 14406 | unresolved_reloc = FALSE; |
afbe61cf | 14407 | } |
25f23106 AM |
14408 | if (!is_opd |
14409 | && r_type == R_PPC64_ADDR64 | |
14410 | && (h != NULL | |
14411 | ? h->elf.type == STT_GNU_IFUNC | |
14412 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
14413 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14414 | else | |
14415 | { | |
14416 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 14417 | |
25f23106 AM |
14418 | /* We need to relocate .opd contents for ld.so. |
14419 | Prelink also wants simple and consistent rules | |
14420 | for relocs. This make all RELATIVE relocs have | |
14421 | *r_offset equal to r_addend. */ | |
14422 | relocate = TRUE; | |
14423 | } | |
65f38f15 AM |
14424 | } |
14425 | else | |
14426 | { | |
14427 | long indx = 0; | |
14428 | ||
25f23106 AM |
14429 | if (h != NULL |
14430 | ? h->elf.type == STT_GNU_IFUNC | |
14431 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14432 | { | |
25f53a85 | 14433 | info->callbacks->einfo |
bc30df16 AM |
14434 | (_("%P: %H: %s for indirect " |
14435 | "function `%T' unsupported\n"), | |
25f53a85 | 14436 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
14437 | ppc64_elf_howto_table[r_type]->name, |
14438 | sym_name); | |
14439 | ret = FALSE; | |
14440 | } | |
cf35638d | 14441 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
14442 | ; |
14443 | else if (sec == NULL || sec->owner == NULL) | |
14444 | { | |
14445 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 14446 | return FALSE; |
65f38f15 AM |
14447 | } |
14448 | else | |
14449 | { | |
14450 | asection *osec; | |
14451 | ||
14452 | osec = sec->output_section; | |
14453 | indx = elf_section_data (osec)->dynindx; | |
14454 | ||
74541ad4 AM |
14455 | if (indx == 0) |
14456 | { | |
14457 | if ((osec->flags & SEC_READONLY) == 0 | |
14458 | && htab->elf.data_index_section != NULL) | |
14459 | osec = htab->elf.data_index_section; | |
14460 | else | |
14461 | osec = htab->elf.text_index_section; | |
14462 | indx = elf_section_data (osec)->dynindx; | |
14463 | } | |
14464 | BFD_ASSERT (indx != 0); | |
14465 | ||
65f38f15 AM |
14466 | /* We are turning this relocation into one |
14467 | against a section symbol, so subtract out | |
14468 | the output section's address but not the | |
14469 | offset of the input section in the output | |
14470 | section. */ | |
14471 | outrel.r_addend -= osec->vma; | |
14472 | } | |
14473 | ||
14474 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14475 | } | |
14476 | } | |
14477 | ||
14478 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
14479 | if (h != NULL |
14480 | ? h->elf.type == STT_GNU_IFUNC | |
14481 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
33e44f2e | 14482 | sreloc = htab->elf.irelplt; |
65f38f15 AM |
14483 | if (sreloc == NULL) |
14484 | abort (); | |
14485 | ||
dfbb6ac9 AM |
14486 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
14487 | >= sreloc->size) | |
14488 | abort (); | |
947216bf AM |
14489 | loc = sreloc->contents; |
14490 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
14491 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
14492 | ||
14493 | /* If this reloc is against an external symbol, it will | |
14494 | be computed at runtime, so there's no need to do | |
81407a69 AM |
14495 | anything now. However, for the sake of prelink ensure |
14496 | that the section contents are a known value. */ | |
65f38f15 | 14497 | if (! relocate) |
81407a69 AM |
14498 | { |
14499 | unresolved_reloc = FALSE; | |
14500 | /* The value chosen here is quite arbitrary as ld.so | |
14501 | ignores section contents except for the special | |
14502 | case of .opd where the contents might be accessed | |
14503 | before relocation. Choose zero, as that won't | |
14504 | cause reloc overflow. */ | |
14505 | relocation = 0; | |
14506 | addend = 0; | |
14507 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
14508 | to improve backward compatibility with older | |
14509 | versions of ld. */ | |
14510 | if (r_type == R_PPC64_ADDR64) | |
14511 | addend = outrel.r_addend; | |
14512 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 14513 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
14514 | addend = (input_section->output_section->vma |
14515 | + input_section->output_offset | |
14516 | + rel->r_offset); | |
81407a69 | 14517 | } |
65f38f15 | 14518 | } |
5bd4f169 AM |
14519 | break; |
14520 | ||
65f38f15 AM |
14521 | case R_PPC64_COPY: |
14522 | case R_PPC64_GLOB_DAT: | |
14523 | case R_PPC64_JMP_SLOT: | |
25f23106 | 14524 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
14525 | case R_PPC64_RELATIVE: |
14526 | /* We shouldn't ever see these dynamic relocs in relocatable | |
14527 | files. */ | |
ae9a127f | 14528 | /* Fall through. */ |
65f38f15 AM |
14529 | |
14530 | case R_PPC64_PLTGOT16: | |
14531 | case R_PPC64_PLTGOT16_DS: | |
14532 | case R_PPC64_PLTGOT16_HA: | |
14533 | case R_PPC64_PLTGOT16_HI: | |
14534 | case R_PPC64_PLTGOT16_LO: | |
14535 | case R_PPC64_PLTGOT16_LO_DS: | |
14536 | case R_PPC64_PLTREL32: | |
14537 | case R_PPC64_PLTREL64: | |
14538 | /* These ones haven't been implemented yet. */ | |
14539 | ||
25f53a85 | 14540 | info->callbacks->einfo |
bc30df16 | 14541 | (_("%P: %B: %s is not supported for `%T'\n"), |
d003868e | 14542 | input_bfd, |
4ce794b7 | 14543 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
14544 | |
14545 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 14546 | ret = FALSE; |
5bd4f169 | 14547 | continue; |
65f38f15 | 14548 | } |
5bd4f169 | 14549 | |
67f0cbdb AM |
14550 | /* Multi-instruction sequences that access the TOC can be |
14551 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
14552 | to nop; addi rb,r2,x; */ | |
14553 | switch (r_type) | |
14554 | { | |
14555 | default: | |
14556 | break; | |
14557 | ||
14558 | case R_PPC64_GOT_TLSLD16_HI: | |
14559 | case R_PPC64_GOT_TLSGD16_HI: | |
14560 | case R_PPC64_GOT_TPREL16_HI: | |
14561 | case R_PPC64_GOT_DTPREL16_HI: | |
14562 | case R_PPC64_GOT16_HI: | |
14563 | case R_PPC64_TOC16_HI: | |
14564 | /* These relocs would only be useful if building up an | |
14565 | offset to later add to r2, perhaps in an indexed | |
14566 | addressing mode instruction. Don't try to optimize. | |
14567 | Unfortunately, the possibility of someone building up an | |
14568 | offset like this or even with the HA relocs, means that | |
14569 | we need to check the high insn when optimizing the low | |
14570 | insn. */ | |
14571 | break; | |
14572 | ||
14573 | case R_PPC64_GOT_TLSLD16_HA: | |
14574 | case R_PPC64_GOT_TLSGD16_HA: | |
14575 | case R_PPC64_GOT_TPREL16_HA: | |
14576 | case R_PPC64_GOT_DTPREL16_HA: | |
14577 | case R_PPC64_GOT16_HA: | |
14578 | case R_PPC64_TOC16_HA: | |
98528052 | 14579 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14580 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 AM |
14581 | { |
14582 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14583 | bfd_put_32 (input_bfd, NOP, p); | |
14584 | } | |
67f0cbdb AM |
14585 | break; |
14586 | ||
14587 | case R_PPC64_GOT_TLSLD16_LO: | |
14588 | case R_PPC64_GOT_TLSGD16_LO: | |
14589 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14590 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14591 | case R_PPC64_GOT16_LO: | |
14592 | case R_PPC64_GOT16_LO_DS: | |
14593 | case R_PPC64_TOC16_LO: | |
14594 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 14595 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 14596 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
14597 | { |
14598 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
14599 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
14600 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
14601 | { | |
14602 | /* Transform addic to addi when we change reg. */ | |
14603 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
14604 | insn |= (14u << 26) | (2 << 16); | |
14605 | } | |
14606 | else | |
67f0cbdb | 14607 | { |
98528052 AM |
14608 | insn &= ~(0x1f << 16); |
14609 | insn |= 2 << 16; | |
67f0cbdb | 14610 | } |
560c8763 | 14611 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
14612 | } |
14613 | break; | |
14614 | } | |
14615 | ||
65f38f15 | 14616 | /* Do any further special processing. */ |
b80eed39 | 14617 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 AM |
14618 | switch (r_type) |
14619 | { | |
14620 | default: | |
14621 | break; | |
14622 | ||
25f23106 | 14623 | case R_PPC64_REL16_HA: |
f9c6b907 AM |
14624 | case R_PPC64_ADDR16_HA: |
14625 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
14626 | case R_PPC64_ADDR16_HIGHERA: |
14627 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
14628 | case R_PPC64_TOC16_HA: |
14629 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 14630 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 14631 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 14632 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 14633 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
14634 | case R_PPC64_DTPREL16_HA: |
14635 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 14636 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 14637 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
14638 | /* It's just possible that this symbol is a weak symbol |
14639 | that's not actually defined anywhere. In that case, | |
14640 | 'sec' would be NULL, and we should leave the symbol | |
14641 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
14642 | if (sec == NULL) |
14643 | break; | |
14644 | /* Fall thru */ | |
14645 | ||
14646 | case R_PPC64_GOT16_HA: | |
14647 | case R_PPC64_PLTGOT16_HA: | |
14648 | case R_PPC64_PLT16_HA: | |
14649 | case R_PPC64_GOT_TLSGD16_HA: | |
14650 | case R_PPC64_GOT_TLSLD16_HA: | |
14651 | case R_PPC64_GOT_TPREL16_HA: | |
14652 | case R_PPC64_GOT_DTPREL16_HA: | |
14653 | /* Add 0x10000 if sign bit in 0:15 is set. | |
14654 | Bits 0:15 are not used. */ | |
14655 | addend += 0x8000; | |
65f38f15 AM |
14656 | break; |
14657 | ||
14658 | case R_PPC64_ADDR16_DS: | |
14659 | case R_PPC64_ADDR16_LO_DS: | |
14660 | case R_PPC64_GOT16_DS: | |
14661 | case R_PPC64_GOT16_LO_DS: | |
14662 | case R_PPC64_PLT16_LO_DS: | |
14663 | case R_PPC64_SECTOFF_DS: | |
14664 | case R_PPC64_SECTOFF_LO_DS: | |
14665 | case R_PPC64_TOC16_DS: | |
14666 | case R_PPC64_TOC16_LO_DS: | |
14667 | case R_PPC64_PLTGOT16_DS: | |
14668 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
14669 | case R_PPC64_GOT_TPREL16_DS: |
14670 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14671 | case R_PPC64_GOT_DTPREL16_DS: | |
14672 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14673 | case R_PPC64_TPREL16_DS: | |
14674 | case R_PPC64_TPREL16_LO_DS: | |
14675 | case R_PPC64_DTPREL16_DS: | |
14676 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
14677 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
14678 | mask = 3; | |
14679 | /* If this reloc is against an lq insn, then the value must be | |
14680 | a multiple of 16. This is somewhat of a hack, but the | |
14681 | "correct" way to do this by defining _DQ forms of all the | |
14682 | _DS relocs bloats all reloc switches in this file. It | |
14683 | doesn't seem to make much sense to use any of these relocs | |
14684 | in data, so testing the insn should be safe. */ | |
494dac0c | 14685 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
14686 | mask = 15; |
14687 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 14688 | { |
25f53a85 | 14689 | info->callbacks->einfo |
8de848d8 | 14690 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 14691 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 14692 | howto->name, |
adadcc0c | 14693 | mask + 1); |
65f38f15 | 14694 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14695 | ret = FALSE; |
65f38f15 AM |
14696 | continue; |
14697 | } | |
14698 | break; | |
5bd4f169 AM |
14699 | } |
14700 | ||
239e1f3a AM |
14701 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
14702 | because such sections are not SEC_ALLOC and thus ld.so will | |
14703 | not process them. */ | |
65f38f15 | 14704 | if (unresolved_reloc |
239e1f3a | 14705 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
14706 | && h->elf.def_dynamic) |
14707 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
14708 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 14709 | { |
25f53a85 | 14710 | info->callbacks->einfo |
bc30df16 | 14711 | (_("%P: %H: unresolvable %s against `%T'\n"), |
25f53a85 | 14712 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 14713 | howto->name, |
039b3fef | 14714 | h->elf.root.root.string); |
b34976b6 | 14715 | ret = FALSE; |
9c07fe7c | 14716 | } |
5bd4f169 | 14717 | |
b80eed39 AM |
14718 | /* 16-bit fields in insns mostly have signed values, but a |
14719 | few insns have 16-bit unsigned values. Really, we should | |
14720 | have different reloc types. */ | |
14721 | if (howto->complain_on_overflow != complain_overflow_dont | |
14722 | && howto->dst_mask == 0xffff | |
14723 | && (input_section->flags & SEC_CODE) != 0) | |
14724 | { | |
14725 | enum complain_overflow complain = complain_overflow_signed; | |
14726 | ||
14727 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
14728 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
14729 | complain = complain_overflow_bitfield; | |
14730 | else if (howto->rightshift == 0 | |
14731 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
14732 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
14733 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
14734 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
14735 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
14736 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
14737 | complain = complain_overflow_unsigned; |
14738 | if (howto->complain_on_overflow != complain) | |
14739 | { | |
14740 | alt_howto = *howto; | |
14741 | alt_howto.complain_on_overflow = complain; | |
14742 | howto = &alt_howto; | |
14743 | } | |
14744 | } | |
14745 | ||
14746 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
14747 | rel->r_offset, relocation, addend); | |
5bd4f169 | 14748 | |
ef60b7ff | 14749 | if (r != bfd_reloc_ok) |
5bd4f169 | 14750 | { |
bc30df16 | 14751 | char *more_info = NULL; |
b80eed39 | 14752 | const char *reloc_name = howto->name; |
bc30df16 AM |
14753 | |
14754 | if (reloc_dest != DEST_NORMAL) | |
14755 | { | |
14756 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
14757 | if (more_info != NULL) | |
14758 | { | |
14759 | strcpy (more_info, reloc_name); | |
14760 | strcat (more_info, (reloc_dest == DEST_OPD | |
14761 | ? " (OPD)" : " (stub)")); | |
14762 | reloc_name = more_info; | |
14763 | } | |
14764 | } | |
14765 | ||
cd27b276 | 14766 | if (r == bfd_reloc_overflow) |
5bd4f169 | 14767 | { |
cd27b276 AM |
14768 | if (warned) |
14769 | continue; | |
14770 | if (h != NULL | |
039b3fef | 14771 | && h->elf.root.type == bfd_link_hash_undefweak |
b80eed39 | 14772 | && howto->pc_relative) |
5bd4f169 AM |
14773 | { |
14774 | /* Assume this is a call protected by other code that | |
14775 | detects the symbol is undefined. If this is the case, | |
14776 | we can safely ignore the overflow. If not, the | |
14777 | program is hosed anyway, and a little warning isn't | |
14778 | going to help. */ | |
14779 | ||
14780 | continue; | |
14781 | } | |
14782 | ||
ef60b7ff | 14783 | if (!((*info->callbacks->reloc_overflow) |
bc30df16 AM |
14784 | (info, &h->elf.root, sym_name, |
14785 | reloc_name, orig_rel.r_addend, | |
14786 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 14787 | return FALSE; |
ef60b7ff AM |
14788 | } |
14789 | else | |
14790 | { | |
25f53a85 | 14791 | info->callbacks->einfo |
bc30df16 | 14792 | (_("%P: %H: %s against `%T': error %d\n"), |
25f53a85 | 14793 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 14794 | reloc_name, sym_name, (int) r); |
b34976b6 | 14795 | ret = FALSE; |
ef60b7ff | 14796 | } |
bc30df16 AM |
14797 | if (more_info != NULL) |
14798 | free (more_info); | |
5bd4f169 | 14799 | } |
5bd4f169 AM |
14800 | } |
14801 | ||
645ea6a9 AM |
14802 | /* If we're emitting relocations, then shortly after this function |
14803 | returns, reloc offsets and addends for this section will be | |
14804 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
14805 | file rather than the input. Save a copy of the relocs for |
14806 | opd_entry_value. */ | |
4cc603a5 | 14807 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
14808 | { |
14809 | bfd_size_type amt; | |
14810 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
14811 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
14812 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
14813 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
14814 | if (rel == NULL) |
14815 | return FALSE; | |
14816 | memcpy (rel, relocs, amt); | |
14817 | } | |
5bd4f169 AM |
14818 | return ret; |
14819 | } | |
14820 | ||
754021d0 AM |
14821 | /* Adjust the value of any local symbols in opd sections. */ |
14822 | ||
6e0b88f1 | 14823 | static int |
754021d0 AM |
14824 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
14825 | const char *name ATTRIBUTE_UNUSED, | |
14826 | Elf_Internal_Sym *elfsym, | |
14827 | asection *input_sec, | |
14828 | struct elf_link_hash_entry *h) | |
14829 | { | |
74f0fb50 AM |
14830 | struct _opd_sec_data *opd; |
14831 | long adjust; | |
754021d0 AM |
14832 | bfd_vma value; |
14833 | ||
4025353c | 14834 | if (h != NULL) |
6e0b88f1 | 14835 | return 1; |
4025353c | 14836 | |
74f0fb50 AM |
14837 | opd = get_opd_info (input_sec); |
14838 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 14839 | return 1; |
754021d0 AM |
14840 | |
14841 | value = elfsym->st_value - input_sec->output_offset; | |
14842 | if (!info->relocatable) | |
14843 | value -= input_sec->output_section->vma; | |
14844 | ||
74f0fb50 | 14845 | adjust = opd->adjust[value / 8]; |
4025353c | 14846 | if (adjust == -1) |
6e0b88f1 AM |
14847 | return 2; |
14848 | ||
14849 | elfsym->st_value += adjust; | |
14850 | return 1; | |
754021d0 AM |
14851 | } |
14852 | ||
5bd4f169 AM |
14853 | /* Finish up dynamic symbol handling. We set the contents of various |
14854 | dynamic sections here. */ | |
14855 | ||
b34976b6 | 14856 | static bfd_boolean |
4ce794b7 AM |
14857 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
14858 | struct bfd_link_info *info, | |
14859 | struct elf_link_hash_entry *h, | |
ab6dce23 | 14860 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5bd4f169 | 14861 | { |
65f38f15 | 14862 | struct ppc_link_hash_table *htab; |
8387904d AM |
14863 | struct plt_entry *ent; |
14864 | Elf_Internal_Rela rela; | |
14865 | bfd_byte *loc; | |
5bd4f169 | 14866 | |
65f38f15 | 14867 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14868 | if (htab == NULL) |
14869 | return FALSE; | |
5bd4f169 | 14870 | |
8387904d AM |
14871 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
14872 | if (ent->plt.offset != (bfd_vma) -1) | |
14873 | { | |
14874 | /* This symbol has an entry in the procedure linkage | |
14875 | table. Set it up. */ | |
e054468f AM |
14876 | if (!htab->elf.dynamic_sections_created |
14877 | || h->dynindx == -1) | |
14878 | { | |
14879 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
14880 | && h->def_regular | |
14881 | && (h->root.type == bfd_link_hash_defined | |
14882 | || h->root.type == bfd_link_hash_defweak)); | |
33e44f2e AM |
14883 | rela.r_offset = (htab->elf.iplt->output_section->vma |
14884 | + htab->elf.iplt->output_offset | |
25f23106 | 14885 | + ent->plt.offset); |
ee67d69a AM |
14886 | if (htab->opd_abi) |
14887 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14888 | else | |
14889 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
e054468f AM |
14890 | rela.r_addend = (h->root.u.def.value |
14891 | + h->root.u.def.section->output_offset | |
14892 | + h->root.u.def.section->output_section->vma | |
14893 | + ent->addend); | |
33e44f2e AM |
14894 | loc = (htab->elf.irelplt->contents |
14895 | + (htab->elf.irelplt->reloc_count++ | |
25f23106 | 14896 | * sizeof (Elf64_External_Rela))); |
e054468f AM |
14897 | } |
14898 | else | |
14899 | { | |
33e44f2e AM |
14900 | rela.r_offset = (htab->elf.splt->output_section->vma |
14901 | + htab->elf.splt->output_offset | |
25f23106 | 14902 | + ent->plt.offset); |
e054468f AM |
14903 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
14904 | rela.r_addend = ent->addend; | |
33e44f2e | 14905 | loc = (htab->elf.srelplt->contents |
b9e5796b AM |
14906 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
14907 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
e054468f | 14908 | } |
8387904d | 14909 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a345bc8d AM |
14910 | |
14911 | if (!htab->opd_abi) | |
14912 | { | |
14913 | if (!h->def_regular) | |
14914 | { | |
14915 | /* Mark the symbol as undefined, rather than as | |
14916 | defined in glink. Leave the value if there were | |
14917 | any relocations where pointer equality matters | |
14918 | (this is a clue for the dynamic linker, to make | |
14919 | function pointer comparisons work between an | |
14920 | application and shared library), otherwise set it | |
14921 | to zero. */ | |
14922 | sym->st_shndx = SHN_UNDEF; | |
14923 | if (!h->pointer_equality_needed) | |
14924 | sym->st_value = 0; | |
14925 | else if (!h->ref_regular_nonweak) | |
14926 | { | |
14927 | /* This breaks function pointer comparisons, but | |
14928 | that is better than breaking tests for a NULL | |
14929 | function pointer. */ | |
14930 | sym->st_value = 0; | |
14931 | } | |
14932 | } | |
14933 | } | |
8387904d | 14934 | } |
5bd4f169 | 14935 | |
f5385ebf | 14936 | if (h->needs_copy) |
5bd4f169 | 14937 | { |
65f38f15 | 14938 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 14939 | |
65f38f15 AM |
14940 | if (h->dynindx == -1 |
14941 | || (h->root.type != bfd_link_hash_defined | |
14942 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 14943 | || htab->relbss == NULL) |
65f38f15 | 14944 | abort (); |
5bd4f169 AM |
14945 | |
14946 | rela.r_offset = (h->root.u.def.value | |
14947 | + h->root.u.def.section->output_section->vma | |
14948 | + h->root.u.def.section->output_offset); | |
14949 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
14950 | rela.r_addend = 0; | |
4ce794b7 AM |
14951 | loc = htab->relbss->contents; |
14952 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 14953 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
14954 | } |
14955 | ||
b34976b6 | 14956 | return TRUE; |
5bd4f169 AM |
14957 | } |
14958 | ||
65f38f15 AM |
14959 | /* Used to decide how to sort relocs in an optimal manner for the |
14960 | dynamic linker, before writing them out. */ | |
14961 | ||
14962 | static enum elf_reloc_type_class | |
7e612e98 AM |
14963 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
14964 | const asection *rel_sec, | |
14965 | const Elf_Internal_Rela *rela) | |
65f38f15 | 14966 | { |
04c9666a | 14967 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
14968 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
14969 | ||
33e44f2e | 14970 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 14971 | return reloc_class_ifunc; |
a33d1f77 | 14972 | |
4ce794b7 | 14973 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 14974 | switch (r_type) |
65f38f15 AM |
14975 | { |
14976 | case R_PPC64_RELATIVE: | |
14977 | return reloc_class_relative; | |
14978 | case R_PPC64_JMP_SLOT: | |
14979 | return reloc_class_plt; | |
14980 | case R_PPC64_COPY: | |
14981 | return reloc_class_copy; | |
14982 | default: | |
14983 | return reloc_class_normal; | |
14984 | } | |
14985 | } | |
14986 | ||
5bd4f169 AM |
14987 | /* Finish up the dynamic sections. */ |
14988 | ||
b34976b6 | 14989 | static bfd_boolean |
4ce794b7 AM |
14990 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
14991 | struct bfd_link_info *info) | |
5bd4f169 | 14992 | { |
65f38f15 AM |
14993 | struct ppc_link_hash_table *htab; |
14994 | bfd *dynobj; | |
5bd4f169 | 14995 | asection *sdyn; |
5bd4f169 | 14996 | |
65f38f15 | 14997 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14998 | if (htab == NULL) |
14999 | return FALSE; | |
15000 | ||
65f38f15 | 15001 | dynobj = htab->elf.dynobj; |
3d4d4302 | 15002 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 15003 | |
65f38f15 | 15004 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 15005 | { |
5bd4f169 AM |
15006 | Elf64_External_Dyn *dyncon, *dynconend; |
15007 | ||
33e44f2e | 15008 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 15009 | abort (); |
5bd4f169 AM |
15010 | |
15011 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 15012 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
15013 | for (; dyncon < dynconend; dyncon++) |
15014 | { | |
15015 | Elf_Internal_Dyn dyn; | |
19397422 | 15016 | asection *s; |
5bd4f169 AM |
15017 | |
15018 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
15019 | ||
15020 | switch (dyn.d_tag) | |
15021 | { | |
65f38f15 AM |
15022 | default: |
15023 | continue; | |
5bd4f169 | 15024 | |
5d1634d7 | 15025 | case DT_PPC64_GLINK: |
4ce794b7 | 15026 | s = htab->glink; |
6348e046 | 15027 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
15028 | /* We stupidly defined DT_PPC64_GLINK to be the start |
15029 | of glink rather than the first entry point, which is | |
15030 | what ld.so needs, and now have a bigger stub to | |
15031 | support automatic multiple TOCs. */ | |
b9e5796b | 15032 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
5d1634d7 AM |
15033 | break; |
15034 | ||
19397422 AM |
15035 | case DT_PPC64_OPD: |
15036 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15037 | if (s == NULL) |
15038 | continue; | |
15039 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
15040 | break; |
15041 | ||
e8910a83 AM |
15042 | case DT_PPC64_OPT: |
15043 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
15044 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
15045 | break; | |
15046 | ||
19397422 AM |
15047 | case DT_PPC64_OPDSZ: |
15048 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
15049 | if (s == NULL) |
15050 | continue; | |
eea6121a | 15051 | dyn.d_un.d_val = s->size; |
19397422 AM |
15052 | break; |
15053 | ||
65f38f15 | 15054 | case DT_PLTGOT: |
33e44f2e | 15055 | s = htab->elf.splt; |
6348e046 | 15056 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
15057 | break; |
15058 | ||
15059 | case DT_JMPREL: | |
33e44f2e | 15060 | s = htab->elf.srelplt; |
6348e046 | 15061 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 15062 | break; |
5bd4f169 | 15063 | |
65f38f15 | 15064 | case DT_PLTRELSZ: |
33e44f2e | 15065 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 AM |
15066 | break; |
15067 | ||
15068 | case DT_RELASZ: | |
15069 | /* Don't count procedure linkage table relocs in the | |
15070 | overall reloc count. */ | |
33e44f2e | 15071 | s = htab->elf.srelplt; |
6348e046 AM |
15072 | if (s == NULL) |
15073 | continue; | |
eea6121a | 15074 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
15075 | break; |
15076 | ||
15077 | case DT_RELA: | |
15078 | /* We may not be using the standard ELF linker script. | |
15079 | If .rela.plt is the first .rela section, we adjust | |
15080 | DT_RELA to not include it. */ | |
33e44f2e | 15081 | s = htab->elf.srelplt; |
6348e046 AM |
15082 | if (s == NULL) |
15083 | continue; | |
15084 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
15085 | continue; | |
eea6121a | 15086 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 15087 | break; |
5bd4f169 | 15088 | } |
5bd4f169 | 15089 | |
65f38f15 | 15090 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 15091 | } |
5bd4f169 AM |
15092 | } |
15093 | ||
33e44f2e | 15094 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
5d1634d7 AM |
15095 | { |
15096 | /* Fill in the first entry in the global offset table. | |
15097 | We use it to hold the link-time TOCbase. */ | |
15098 | bfd_put_64 (output_bfd, | |
60ee0d4a | 15099 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 15100 | htab->elf.sgot->contents); |
5d1634d7 AM |
15101 | |
15102 | /* Set .got entry size. */ | |
33e44f2e | 15103 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
15104 | } |
15105 | ||
33e44f2e | 15106 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5d1634d7 AM |
15107 | { |
15108 | /* Set .plt entry size. */ | |
33e44f2e | 15109 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 15110 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
15111 | } |
15112 | ||
84f5d08e AM |
15113 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
15114 | brlt ourselves if emitrelocations. */ | |
15115 | if (htab->brlt != NULL | |
15116 | && htab->brlt->reloc_count != 0 | |
15117 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15118 | htab->brlt, | |
d4730f92 | 15119 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
15120 | elf_section_data (htab->brlt)->relocs, |
15121 | NULL)) | |
15122 | return FALSE; | |
15123 | ||
176a0d42 AM |
15124 | if (htab->glink != NULL |
15125 | && htab->glink->reloc_count != 0 | |
15126 | && !_bfd_elf_link_output_relocs (output_bfd, | |
15127 | htab->glink, | |
d4730f92 | 15128 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
15129 | elf_section_data (htab->glink)->relocs, |
15130 | NULL)) | |
15131 | return FALSE; | |
15132 | ||
58d180e8 | 15133 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
15134 | && htab->glink_eh_frame->size != 0) |
15135 | { | |
15136 | bfd_vma val; | |
15137 | bfd_byte *p; | |
15138 | asection *stub_sec; | |
15139 | ||
15140 | p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie); | |
15141 | for (stub_sec = htab->params->stub_bfd->sections; | |
15142 | stub_sec != NULL; | |
15143 | stub_sec = stub_sec->next) | |
15144 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
15145 | { | |
15146 | /* FDE length. */ | |
15147 | p += 4; | |
15148 | /* CIE pointer. */ | |
15149 | p += 4; | |
15150 | /* Offset to stub section. */ | |
15151 | val = (stub_sec->output_section->vma | |
15152 | + stub_sec->output_offset); | |
15153 | val -= (htab->glink_eh_frame->output_section->vma | |
15154 | + htab->glink_eh_frame->output_offset | |
15155 | + (p - htab->glink_eh_frame->contents)); | |
15156 | if (val + 0x80000000 > 0xffffffff) | |
15157 | { | |
15158 | info->callbacks->einfo | |
15159 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15160 | stub_sec->name); | |
15161 | return FALSE; | |
15162 | } | |
15163 | bfd_put_32 (dynobj, val, p); | |
15164 | p += 4; | |
15165 | /* stub section size. */ | |
15166 | p += 4; | |
15167 | /* Augmentation. */ | |
15168 | p += 1; | |
15169 | /* Pad. */ | |
15170 | p += 7; | |
15171 | } | |
15172 | if (htab->glink != NULL && htab->glink->size != 0) | |
15173 | { | |
15174 | /* FDE length. */ | |
15175 | p += 4; | |
15176 | /* CIE pointer. */ | |
15177 | p += 4; | |
15178 | /* Offset to .glink. */ | |
15179 | val = (htab->glink->output_section->vma | |
15180 | + htab->glink->output_offset | |
15181 | + 8); | |
15182 | val -= (htab->glink_eh_frame->output_section->vma | |
15183 | + htab->glink_eh_frame->output_offset | |
15184 | + (p - htab->glink_eh_frame->contents)); | |
15185 | if (val + 0x80000000 > 0xffffffff) | |
15186 | { | |
15187 | info->callbacks->einfo | |
15188 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
15189 | htab->glink->name); | |
15190 | return FALSE; | |
15191 | } | |
15192 | bfd_put_32 (dynobj, val, p); | |
15193 | p += 4; | |
15194 | /* .glink size. */ | |
15195 | p += 4; | |
15196 | /* Augmentation. */ | |
15197 | p += 1; | |
15198 | /* Ops. */ | |
15199 | p += 7; | |
15200 | } | |
15201 | ||
15202 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
15203 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
15204 | htab->glink_eh_frame, | |
15205 | htab->glink_eh_frame->contents)) | |
15206 | return FALSE; | |
15207 | } | |
58d180e8 | 15208 | |
e717da7e | 15209 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
15210 | since we didn't add them to DYNOBJ. We know dynobj is the first |
15211 | bfd. */ | |
c72f2fb2 | 15212 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
15213 | { |
15214 | asection *s; | |
7b53ace3 | 15215 | |
0c8d6e5c | 15216 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
15217 | continue; |
15218 | ||
e717da7e AM |
15219 | s = ppc64_elf_tdata (dynobj)->got; |
15220 | if (s != NULL | |
eea6121a | 15221 | && s->size != 0 |
e717da7e AM |
15222 | && s->output_section != bfd_abs_section_ptr |
15223 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15224 | s->contents, s->output_offset, | |
eea6121a | 15225 | s->size)) |
e717da7e AM |
15226 | return FALSE; |
15227 | s = ppc64_elf_tdata (dynobj)->relgot; | |
15228 | if (s != NULL | |
eea6121a | 15229 | && s->size != 0 |
e717da7e AM |
15230 | && s->output_section != bfd_abs_section_ptr |
15231 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
15232 | s->contents, s->output_offset, | |
eea6121a | 15233 | s->size)) |
e717da7e AM |
15234 | return FALSE; |
15235 | } | |
f6c52c13 | 15236 | |
b34976b6 | 15237 | return TRUE; |
5bd4f169 AM |
15238 | } |
15239 | ||
5bd4f169 | 15240 | #include "elf64-target.h" |
7b8e7dad AM |
15241 | |
15242 | /* FreeBSD support */ | |
15243 | ||
15244 | #undef TARGET_LITTLE_SYM | |
15245 | #undef TARGET_LITTLE_NAME | |
15246 | ||
15247 | #undef TARGET_BIG_SYM | |
6d00b590 | 15248 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
15249 | #undef TARGET_BIG_NAME |
15250 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
15251 | ||
15252 | #undef ELF_OSABI | |
15253 | #define ELF_OSABI ELFOSABI_FREEBSD | |
15254 | ||
15255 | #undef elf64_bed | |
15256 | #define elf64_bed elf64_powerpc_fbsd_bed | |
15257 | ||
15258 | #include "elf64-target.h" | |
15259 |